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1
Singh, Jagar. "Technology, characteristics, and modeling of large-grain polysilicon MOSFET /." View Abstract or Full-Text, 2002. http://library.ust.hk/cgi/db/thesis.pl?ELEC%202002%20SINGH.
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Frank, Brian James. "Corn grain yield and plant characteristics in two water environments." Thesis, Manhattan, Kan. : Kansas State University, 2010. http://hdl.handle.net/2097/3280.
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Menezes, Eduardo Assis. "Agronomic characteristics of intercropped legume and cereal crops." Diss., The University of Arizona, 1988. http://hdl.handle.net/10150/184323.
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Research was conducted in the summers of 1985 and 1986 at the University of Arizona Marana Agricultural Center, with the objectives of (1) determining the best intercropping species combination under near optimum irrigation, using three cereals (sorghum (Sorghum bicolor), maize (Zea mays), and pearl millet (Pennisetum americanum) and three legumes (field bean (Phaseolus vulgaris), cowpea (Vigna unguiculata), and soybean (Glycine max) in all combinations, and (2) identifying species genotypes best adapted to intercropping. Results from 1985 determined sorghum x soybean as the most appropriate intercropping combination for the environment of the Marana Agricultural Center. In the 1986 cropping season, three sorghum genotypes (Pioneer 8493, Funks G-522DR, and California IO80H40) were combined with three soybean genotypes (Asgrow A6242, Asgrow A6520, and Rillito), to identify the best genotype combination for intercropping. Both 1985 and 1986 experiments were carried out in a randomized complete block design with four replications. Pearl millet was the cereal with the greatest decrease in yield when intercropped, indicating that this cereal was not a good competitor with legumes. Sorghum was the best cereal competitor with the legumes and soybean was the best legume competitor with the cereals. Among the three sorghum genotypes studied in 1986, only Pioneer 8493 showed higher yield in monocrop whereas the other two genotypes yielded higher in intercropping, indicating some benefit from this system. On the average, all three sorghum genotypes showed intercropping to be advantageous, with high Land Equivalent Ratio values. Soybean genotypes showed drastic decreases in yield when intercropped. Asgrow A6520 soybean had the highest yield in intercropping. Sorghum #3 (California IO80H40) and soybean #3 (Rillito) were chosen as the most appropriate genotypes for intercropping, for the environmental conditions of the study.
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Kalwar, Muhammad Issa. "Aerodynamics and drying characteristics of grains in two-dimensional spouted beds." Thesis, McGill University, 1991. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=74608.
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Two slotted two-dimensional spouted bed units with flexible bed dimensions were designed and fabricated. Static vertical pressure of grains (shelled corn, soybean, and wheat) on the air entry slots in the pilot scale unit indicated that the silo theories are not applicable to predict this pressure accurately without including the bed to air inlet aspect ratio, slant angle, and sphericity of grains. A grain quantitative factor accounting for emptying angle of repose and sphericity of particles was proposed and included with the collected data to develop an empirical regression model.Aerodynamics of grains (shelled corn, soybean, and wheat) were found to be affected by slant angle, spout width, separation distance, length of bed and the bed geometrical similarity. Mathematical models for the design parameters of the spouted beds were developed following the principles of dimensional analysis and similitude. Model predictions agree closely with the data.
The drying rate of shelled corn in the geometrically similar two-dimensional spouted beds with draft plates was found to depend on the bed geometry and operating parameters. The drying characteristics of corn in the investigated spouted beds was found to be of the thin layer type. The performance of dryers was modeled in the form of the Page's equation. Expressions for the model parameters accounting for bed geometry, grain moisture content, and drying conditions were developed. The developed model predictions agree well with the data from both beds.
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Glorioso, Mario. "DRYING CHARACTERISTICS OF SATURATED FINE-GRAIN SOIL SLURRIES AT CONSTANT TEMPERATURE." MSSTATE, 2002. http://sun.library.msstate.edu/ETD-db/theses/available/etd-07192002-133443/.
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This study addresses the need for investigation of drying-rate characteristics of fine-grain soils. The research was an attempt to develop a parameter for use in thermal consolidation and/or shrinkage modeling. The investigation required the development of new test methods. During the study, a strong correlation between plasticity indices and certain drying characteristics was noted and discussed in detail. An argument is presented for the superiority of the Drying-Rate Test in comparison with current laboratory procedures for determining Atterberg Limits.
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DalMolin, Tyler E. "A Comparative Study of Quality Characteristics in Grass and Grain-Fed Beef." Diss., The University of Arizona, 2013. http://hdl.handle.net/10150/301702.
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A study was conducted to evaluate the quality characteristics in a comparative manner of grass-fed and grain-fed beef. Thirty two commercially bred beef steers were used. These steers were assigned to one of four treatments; grain-fed, grass/grain-fed, grass-fed and irrigated. These treatments were each reflective of the ration that would be provided to the animal. Individual animal weights were recorded every 28 days throughout the portion of the study. The grain-fed animals realized the highest (P<0.05) average daily gain with the grass-fed and irrigated having the lowest. The steers were harvested when they reached the pre-determined criteria, which was 0.4 inch back fat as measured at the 12th rib via ultrasonography, for the grain-fed or 800 pounds for the grass-fed animals. All animals, once harvested, were graded based upon USDA quality grades with results mirroring those previously mentioned. Carcasses were involved in an aging study in which all left sides of the carcasses were fabricated into primal cuts, vacuumed packaged and aged for 14 days while the right sides were dry aged during the same period. Shear force data were collected to provide for a measure of tenderness. All samples were significantly (P<0.05) more tender following aging with no difference being realized between aging techniques. Percent cutout was also calculated for the two techniques to quantify what difference, if any, existed. No significant difference (P>0.05) was shown between wet and dry aging with regard to percent cutout. Sensory evaluation was also conducted based upon the attributes of juiciness, tenderness and flavor intensity. For all three attributes grain-fed beef was favored (P<0.05). The panelists detected no difference in aging technique for any of the treatments (P>0.05).Carcass soft tissue chemical composition (lipid, protein and moisture) was also evaluated for the treatments. Grain-fed beef was shown to be highest (P<0.05) for overall percent lipid and lowest for percent moisture and protein. The grass-fed carcasses were the opposite, being highest for overall moisture and protein and lowest for lipid (P<0.05).
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Pham, Giao (Robert) Ngoc. "Fracture characteristics, hardness, and grain size of five Pplycrystalline alumina orthodontic brackets /." Connect to this title online, 2000. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=osu1099343059.
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Villamil, Susan Simmons. "Impedance characteristics and grain boundary effects in titanate-based multilayer ceramic capacitors." Thesis, Virginia Polytechnic Institute and State University, 1987. http://hdl.handle.net/10919/94507.
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The major goal of this study was to gain a better understanding of the effects that grain boundaries have on conduction in multilayer ceramic (MLC) capacitors. Electrical measurements were made so that current-voltage curves and impedance plots could be constructed.
It was found that the current-voltage curves of new COG and X7R multilayer ceramic capacitors are both ohmic at low voltages and super-ohmic at intermediate voltages. Ohmic behavior prevails at high voltages for both types. Such behavior can be attributed to grain boundaries.
Grain boundary resistance was clearly exhibited by X7R-type density blanks and one commercially manufactured type of X7R MLC capacitor, while the NPO density blank and two different values of Z5U multilayer ceramic capacitors, each from a different manufacturer, indicated the possibility of grain boundary resistance. All of the samples that were tested showed possible, if not probable, evidence of grain resistance. Only the Z5U-type density blank showed a resistance contribution from the bulk-electrode interfaces.
A model for the grain boundary potential barrier height was developed. It was found that barrier height reduction occurs for small grain sizes due to depletion of the grain, and for increased grain curvature. Dopant effects are also responsible for barrier height reduction.
These results, and the related modelling, indicate that grain boundary contributions to titanate-based ceramic resistance can vary widely from sample to sample, since there are so many material dependent variables involved. Such measurements as those described here can help clarify how grain boundaries and other factors contribute to ceramic resistance.M.S.
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Pham, Giao Robert Ngoc. "Fracture characteristics, hardness, and grain size of five polycrystalline alumina orthodontic brackets." The Ohio State University, 1999. http://rave.ohiolink.edu/etdc/view?acc_num=osu1099343059.
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Ozan, Cem. "Estimation Of Grain Characteristics Of Soils By Using Cone Penetration Test (cpt) Data." Master's thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/1088988/index.pdf.
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Due to lack of soil sampling during a conventional cone penetration testing (CPT), it is necessary to classify soils based on recorded tip and sleeve friction and pore pressure (if available) values. However, currently available soil classification models are based on deterministic and judgemental determination of soil classification boundaries which do not address the uncertainties intristic to the problem. Moreover, size and quality of databases used in the development of these soil classification models are undocumented and thus questionable. Similar limitations do also exist in the development of SPT-CPT correlations which are widely used in SPT dominated design such as soil liquefaction triggering. To eliminate these discussed limitations, within the confines of this study it is attempted to present (1) a new probabilistic CPT- based soil classification methodology, and (2) new SPT-CPT correlations which address the uncertainties intrinsic to the problems. For these purposes, a database composed of 400 CPT/SPT boring data pairs was compiled. It is intended to develop probabilistic models, which will correlate CPT tip and sleeve friction values to actual soil classification and CPT tip resistance to SPT blow count N. The new set of correlations, model parameters of which estimated by implementing maximum likelihood methodology, presented herein are judged to represent a robust and defensible basis for (1) prediction of soil type based on CPT data and, (2) estimation of SPT-N value for given CPT data.
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Illingsworth, J. S. "Investigation of the grain boundary layer characteristics of donor doped barium titanate ceramics." Thesis, Durham University, 1990. http://etheses.dur.ac.uk/1118/.
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Donor doped barium titanate ceramics are well known for their Positive Temperature Coefficient of Resistance (PTCR) characteristic above the crystallographic transition temperature, T° '130°C, where the material changes from the ferroelectric state to paraelectric. The shape and magnitude of the PTCR characteristic are known to be dependent on the composition and preparation of the ceramic, the presence of impurities, particularly donor dopant concentration and acceptor ions, and the sintering conditions. Thirty years ago Heywang proposed a model based on the presence of two-dimensional resistive grain boundary layers consisting of discrete electron traps located in energy between the conduction and valence bands, to explain the PTCR effect. Donor doped barium titanate samples were prepared in a number of different ways: the variation of donor concentration, the addition of impurity acceptor ions, reduction of the sintering temperature and variation of the sintering atmosphere. These samples were investigated by examining their microstructure and their electric and dielectric properties, both at room temperature and above the transition. Theoretical analysis of the experimental results, based on the Heywang model, was then performed to investigate the effects of preparation on the grain boundary layer characteristics. Resistivity - temperature measurements were carried out to find the effect of composition and sintering conditions on the PTCR characteristic and capacitance - temperature measurements demonstrated the effects of donor and acceptor incorporation on the dielectric properties of barium titanate. Grain boundary and grain bulk resistance were separated by means of a. c. impedance methods at room temperature, where the effects of composition and sintering on each were observed. Finally, current - voltage measurements between TT and the resistivity maximum were made for samples containing different donor concentrations, to examine the current conduction mechanism. Detailed analysis of the electric and dielectric measurements permitted the effects of composition and sintering on the grain boundary layer characteristics to be determined. Acceptor state densities were estimated using the resistivity - temperature measurements and capacitance - temperature results, between TT and the resistivity maximum. Resistivity - temperature measurements above the maximum enabled acceptor energies to be estimated. Analysis of the dielectric properties showed that neither the composition nor sintering atmosphere affected the dielectric properties of the grain boundary layers, which were found to obey the Curie-Weiss law above the transition temperature in the same way as the grain bulk. The observed effects of the changes in the preparative conditions to the electric and dielectric properties were explained in terms of the Heywang model and microstructural development, resulting from modifications to the grain boundary layers. The conduction mechanism was examined by means of current - voltage measurements above the transition temperature and below the resistivity maximum. In contrast to the prediction of Heywang. this was found to be predominantly diffusion limited.
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Laukli, Hans Ivar. "High Pressure Die Casting of Aluminium and Magnesium Alloys : Grain Structure and Segregation Characteristics." Doctoral thesis, Norwegian University of Science and Technology, Department of Materials Technology, 2004. http://urn.kb.se/resolve?urn=urn:nbn:no:ntnu:diva-379.
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Cold chamber high pressure die casting, (HPDC), is an important commercial process for the production of complex near net shape aluminium and magnesium alloy castings. The work presented in the thesis was aimed at investigating the microstructure formation in this type of casting. The solidification characteristics related to the process and the alloys control the formation of grains and defects. This again has a significant impact on the mechanical properties of the castings.
The investigations were carried out mainly using the AM60 magnesium alloy and the A356 aluminium alloy. Two different casting arrangements were used: the cold chamber HPDC and the gravity die casting methods, which allowed for different flow and solidification conditions. The microstructures in the castings were investigated using optical microscopy, image analysis, scanning electron microscopy, electron back scatter diffraction measurements and electron probe microanalysis.
In the HPDC experiments, the shot sleeve solidification conditions were investigated primarily by changing the melt superheat on pouring. This significantly affected the microstructures in the castings. The fraction of externally solidified crystals (ESCs) was consistently found to be largest near the gate in both the AM60 and the A356 die castings. This was attributed to the inherent shot sleeve solidification conditions and the flow set up by the plunger movement. When the superheat was increased, a lower fraction of ESCs was found in the castings. Furthermore, a high superheat gave ESCs with branched dendritic/elongated trunk morphology whilst a low superheat generated coarser and more globular ESCs, both in the AM60 and the A356 castings. The ESCs typically segregated towards the central region of the cross sections at further distances from the gate in the die castings.
When a thin layer of thermal insulating coating was applied on the shot sleeve wall in the production of AM60 die castings, it nearly removed all ESCs in the castings. Using an A356 alloy, (and no shot sleeve coating), with no Ti in solution gave a significantly lower fraction of ESCs, whereas AlTi5B1 grain refiner additions induced an increase in the fraction of ESCs and a significantly finer grain size in the castings. The formation of globular ESCs was enhanced when AlTi5B1 grain refiner was added to the A356 alloy.
In controlled laboratory gravity die casting experiments, typical HPDC microstructures were created by pouring semi-solid metal into a steel die: The ESCs were found to segregate/migrate to the central region during flow, until a maximum packing, (fraction of ESCs of ~35-40%), was reached. The extent of segregation is determined by the fraction of ESCs, and the die temperature affects the position of the ESCs. The segregation of ESCs was explained to occur during flow as a result of lift forces.
The formation of banded defects has also been studied: the position of the bands was affected by the die temperature and the fraction of ESCs. Based on the nature of the bands and their occurrence, a new theory on the formation of defect bands was proposed: During flow the solid distribution from the die wall consists of three regions: 1) a solid fraction gradient at the wall; 2) a low solid fraction region which carries (3) a network of ESCs. A critical fraction solid exists where the deformation rate exceeds the interdendritic flow rate. When the induced stress exceeds the network strength, deformation can occur by slip, followed by liquid flow. The liquid flow is caused by solidification shrinkage, hydrostatic pressure on the interior ESC network, and gaps forming which draw in liquid.
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Saeed, Mohammed Ahmed 1940. "PRODUCTION CHARACTERISTICS OF HYBRID GRAIN SORGHUMS UNDER THREE PLANT POPULATIONS AND TWO PLANTING DATES." Thesis, The University of Arizona, 1986. http://hdl.handle.net/10150/275493.
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Smith, David A. "Effect of particle shape on grain size, hydraulic, and transport characteristics of calcareous sand." Thesis, University of Hawaii at Manoa, 2003. http://proquest.umi.com/pqdweb?index=0&did=764803691&SrchMode=1&sid=2&Fmt=2&VInst=PROD&VType=PQD&RQT=309&VName=PQD&TS=1233275673&clientId=23440.
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Ottman, Michael J., and Steven S. Smith. "Alfalfa Variety Characteristics for Lower Elevations in Arizona." College of Agriculture, University of Arizona (Tucson, AZ), 1985. http://hdl.handle.net/10150/200498.
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Knowles, Tim C., Newt Wright, and Chip Sherrill. "Growth Characteristics, Hay Yield, and Feed Quality of Kenaf Grown in Mohave Valley." College of Agriculture, University of Arizona (Tucson, AZ), 1999. http://hdl.handle.net/10150/205164.
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Kenaf was grown as a hay crop in Mohave Valley to determine its growth characteristics, hay yield, and feed quality. The first cutting occurred 75 days after planting when plants were approximately 30 inches tall and had 30 nodes. Hay tonnage was only 1,000 lbs dry matter/acre, crude protein was 20.7 %, ADF was 40.2 %, and TDN was 57.5 %. Forage quality was adequate for beef cattle and sheep.
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Kalumba, Denis. "Effect of grading and grain size on the friction characteristics of a sand/geotextile inteface." Master's thesis, Faculty of Engineering and the Built Environment, 2020. http://hdl.handle.net/11427/32297.
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Geofabrics are incorporated in geotechnical engineering structures for various reasons and functions. This study addresses the reinforcement function whereby geotextiles are utilised as reinforcing elements in reinforced slopes and fills. It particularly focuses on the soil/geotextile interface behaviour. Geotextile reinforcements transfer a majority of the shear stress from the soil to the reinforcement and vice versa by friction. This interfacing ability manifested by the soil/geotextile frictional contact is very important in the performance of reinforced soil structures, and depends on the physical characteristics of the backfill as well as the geotextile. In this investigation, the interaction behaviour of geotextiles with sand is evaluated by conducting extensive laboratory interface tests both in direct shear and pull-out. A comprehensive test program was established to include a needle punched non-woven geotextile interacting with sands of different grading, grain size distributions and grain shapes namely; Cape Flats, Klipheuwel and Munich sands. The respective responses were primarily presented in terms of shear stress/horizontal displacement and pUll-out resistance/front displacement relationships; showing the frictional performance of the geotextile in these sands of different physical characteristics. Interface shear strength in both test methods was determined using Mohr-Coulomb's law. The ensuing shear strength values were compared with each other and with the direct shear strengths of the respective sands used in this investigation Specific emphasis and detailed analyses went into the pull-out experiments in which local displacements of the geotextile specimens were measured as the test progressed. The measurements enabled the study of the stretching characteristics of the geofabric in the different sands. Applying an extrapolation procedure to approximate the constantly changing deformation modulus of the geotextile as it stretched in the respective sands, allowed the back-prediction of the pull-out force/displacement relationship, and thus enabled the study of skin friction distribution along the geotextile specimen during pull-out. The effect of the grading and grain size on the development of the interface shear stress, the peak values, and the type of interface failure could be demonstrated. The analysis of the skin friction along the geotextile specimen led to the development of a generalised shear stress distribution graph which, if validated in further research, may be adopted in practical design situations. In a design example, it was shown that the assumption of interface shear parameters based on direct shear tests provides too optimistic a factor of safety. This study recommends the use of interface shear parameters derived from pull-out tests. The in-depth analysis of the tests in a variety of sands showed clearly that the shear stress is not uniformly distributed over the embedment length of the reinforcement. This skin friction drops dramatically from a peak value near the loaded end to zero at the free end in all investigated confinements.
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May, Matthew Leonard. "The effects of grain processing method, wet and dry distiller's grains with soluble and roughage level on performance and carcass characteristics of finishing cattle." Manhattan, Kan. : Kansas State University, 2008. http://hdl.handle.net/2097/537.
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May, Matthew Leonard. "The effects of grain processing method, wet and dry distiller’s grains with soluble and roughage level on performance and carcass characteristics of finishing cattle." Thesis, Kansas State University, 2008. http://hdl.handle.net/2097/537.
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Master of ScienceDepartment of Animal Sciences and Industry
James S. Drouillard
A series of five trials were conducted to evaluate grain processing, distiller's grains inclusion in finishing diets, interactions between distiller's grains and dry-rolled corn (DRC) or steam-flaked corn (SFC), efficacy of removing roughage in the presence of distiller's grains and the digestibility of distiller's grains in steam-flaked and dry-rolled corn diets. The first trial was designed to determine the optimum flake density of SFC in beef finishing diets. Diets consisted of corn flaked to densities of 360, 411, or 462 g/L. Observed improvements in mill production would support increasing flake density; however numerical decreases in animal performance offset economic benefits of increased productivity. The second trial was conducted to evaluate optimum levels of sorghum wet distiller's grains in finishing diets. Crossbred yearling steers were fed diets containing DRC or SFC and levels of distiller's grains were 0, 10, 20, or 30% of diet dry matter. Distiller's grains can effectively replaced a portion of the corn in finishing diets, but their nutritional value was greater in DRC diets than in SFC diets. In trial 3, crossbred heifers were fed diets containing SFC with 0% DDG and 15% corn silage (CS), 25% DDG and 15% CS, or 25% DDG and 5% CS. In trial 4, crossbreed heifers were fed diets similar containing DRC or SFC with 0% DDG and 15% CS, 25% DDG and 15% CS, or 25% DDG and 5% CS. Results indicate that roughage levels can be reduced in feedlot diets containing DDG with no adverse effects on performance or carcass quality. The fifth trial was a metabolism study conducted to evaluate the digestibility of DDG in beef cattle. Treatments consisted of DRC with 0% DDG, DRC with 25% DDG, SFC with 0% DDG, and SFC with 25% DDG. There were no significant grain processing by distiller's grain interactions observed in main effects. In conclusion optimum flake density was 360 g/L, feeding distiller's grains has a greater value in DRC diets vs. SFC diets, roughage level and type are important in formulating finishing diets, roughage can be reduced when feeding distiller's grains, and ruminal ammonia, and pH are decreased and ruminal lactate is increased when feeding DDG and SFC.
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Ferland, Marie-Claude. "Effects of different feeding systems and sources of grain on lactation characteristics and milk components in dairy cattle." Thesis, McGill University, 2008. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=112621.
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The objective of this study was to evaluate the effect of two different feeding systems and of four different energy sources (Grain diet) on lactation characteristics and milk composition of dairy cattle. A total of 8,808,798 test-day records from 566,736 Holstein cows in 5,183 different herds, and 416,883 test-day records from 26,973 Ayrshire cows in 652 different herds covering a period of five years were obtained from the Quebec dairy herd improvement agency (Valacta). In addition to test-day records, information on lactation, animal status, feed composition and feeding systems was also available. For both Ayrshire and Holstein cows the fixed effect of Feeding System*DIMB (Blocks of 15 days in milk) was a significant effect in predictive models of daily milk, milk-fat, protein, and lactose yields and on milk urea nitrogen (MUN) concentration. Cows served a diet prepared with a Total Mixed Ration (TMR) compared to cows served a diet in a Traditional way tended to have higher peak milk yields and appeared to have a stronger persistency after peak milk yield. TMR-fed cows also showed a tendency for higher milk-fat, protein, and lactose yields and lower MUN concentrations than Traditionally-fed ones. Significantly higher milk yields (peak to 135 days in milk) and higher milk-fat and protein yields (peak to mid-lactation) were found in TMR-fed cows compared to Traditionally-fed ones in 3rd parity Holsteins. Both milk-fat and protein-yield lactation curves of TMR-fed cows displayed a different pattern than Traditionally-fed cows. The fixed effect of the Grain diet*DIMB was found to be a significant effect in predictive models of milk and milk-protein yields of both Ayrshire and Holstein. It was also found to be a significant effect in predictive model of MUN concentration but only in 2nd parity Ayrshire. The effect was non-significant in predictive models of both milk-fat or lactose yields. A tendency for higher milk and milk-protein yields, and lower MUN values was seen when cows received Corn Grain or High Moisture Corn compared to Barley or Commercial Concentrate but no significant differences were observed. It was concluded that a tendency for higher milk and components yields can be observed when cows are fed with a TMR compared to a Traditional system.
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Thomas, Alice. "Paleocene strata of the London Basin : an integrated analysis of grain-size, heavy mineral and tourmaline geochemistry characteristics." Thesis, University of Oxford, 2005. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.432333.
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Balfour, Martha. "Abiotic Differences Between Green Turtle (Chelonia Mydas) Nests in Natural Beach and Engineered Dunes: Effects on Hatching Success." Master's thesis, University of Central Florida, 2010. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2439.
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Habitat loss is among the biggest threats to conservation worldwide, so habitat restoration plays an increasing role in endangered species management. This is especially true for species with high site fidelity, such as nesting marine turtles. Sand replenishment is commonly used to restore coastal beaches after severe erosion events, and may affect marine turtles and other species that live or reproduce in that habitat. I investigated how abiotic characteristics of sand used in a dune restoration project at Archie Carr National Wildlife Refuge, Florida, affected reproduction of the federally-endangered green turtle (Chelonia mydas). Sand structure and composition can affect egg development and hatching success by altering nest conditions, with nests in fine-grain or very coarse sand suffering decreased hatching success. I determined that calcium carbonate content (27.0% ± 1.4 SE vs. 15.1% ± 3.8 SE), moisture content (3.29% ± 0.26 SE vs. 4.59% ± 0.25 SE), and grain size (427.53 μm ± 14.1 SE vs. 274.66 μm ± 29.1 SE) differed significantly between natural and restored dunes. Hatching success of green turtles (44.7% ± 6.2 SE vs. 65.8% ± 5.3 SE) was significantly lower on restored dunes compared to natural dunes with an estimated loss of 22,646 hatched eggs. Hatching success also decreased as the nesting season progressed. These results demonstrate the importance of regulating fill material used in beach restoration projects; substrate characteristics are easily evaluated and can significantly influence marine turtle hatching success.M.S.
Department of Biology
Sciences
Biology MS
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Rahman, Azizur 1954. "Effects of soil moisture stress and inter-plot competition on grain yield and other agronomic characteristics of sorghum and pearl millet." Thesis, The University of Arizona, 1989. http://hdl.handle.net/10150/277218.
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Sorghum (Sorghum bicolor L., Moench) and pearl millet (Pennisetum americanum L., Leeke) were intercropped under soil moisture non-stress and stress at Marana, Arizona during summer 1987. Effects of soil moisture stress and inter-row competition between sorghum and pearl millet on grain yield, 50% bloom, plant height, head length, head exsertion, 1000 grain weight, and number of effective tillers were evaluated. Interplot competition significantly reduced grain yield and head exsertion of peal millet. In sorghum, only plant height was significantly different due to competition. Agronomic characters were significantly different due to the effect of soil moisture stress except head length in pearl millet and head length, 1000 seed weight, and number of effective tillers in sorghum. Sorghum growing in a neighbor plot greatly suppressed millet grain yield under soil moisture stress. Relative yield total of the cereals under intercrop was less than unity under soil moisture stress.
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Andersson, Fredrik. "Falltalsvariationer inom vetepartier och egenskaper för falltalssortering = Sorting of wheat in respect to falling number /." Uppsala : Sveriges lantbruksuniversitet, 2000. http://www.bt.slu.se/lt_old/Meddelande/Me2000-03/Meddel.pdf.
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Umoru, Joseph Adejo. "Characteristics assessment of aspen logs used in the production of matches." Thesis, Linnéuniversitetet, Institutionen för skog och träteknik (SOT), 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-75913.
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Aspen (Populus tremula L.) accounts for about 2% of the total wood stock in Sweden. Sawmills use only a small part (about 5,000 m³fub) of round wood aspen per year. Since there are no Swedish gradings and design values for aspen, no aspen is used for structural purposes. This also applies to other hardwood trees in Sweden. Aspen is mainly used for pulp and paper with a mass consumption of 800,000 m³fub per year of which about 50% is imported. Most imported aspen is from Russia and the Baltics. The other major use of aspen is in match industries. Consumption for matches amounts to approximately 30,000 m³fub per year in Sweden. The aim of the research work was to increase knowledge on the wood quality of aspen used in the production of matches. Aspen (Populus tremula L.) logs were collected from two different sites in Sweden and a non-destructive tools weas used to estimate the modulus of elasticity in logs. To measure the dynamic modulus of elasticity (MOEdyn), Fakopp resonance log grader used. Other properties like density and moisture content were measure and were correlated with the MOEdyn values in order to identify the site that has a better log quality. Besides, horizontal and vertical variation of different wood properties were measured and compared within and between trees from two different sites in order to justify the variation of log quality. A total of 20 trees from Askaremåla and Vimmerby, Sweden were felled and used in this study. From each tree, 3 m long logs were sampled from each base, middle and top. After that, non-destructive evaluations were performed in those logs. Besides, 5 cm thick discs were collected in every tree height (base, middle and top) to measure horizontal and vertical variations. This study shows that there were differences in MOEdyn between and within trees. It was evident that trees collected from Vimmerby had a better log property than that in Askaremåla. Using non-destructive tools, it is possible to sort out quality logs for the production of Swedish matches.
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Delin, Sofia. "Site-specific nitrogen fertilization demand in relation to plant available soil nitrogen and water : potential for prediction based on soil characteristics /." Skara : Department of Soil Sciences, Swedish University of Agricultural Sciences, 2005. http://epsilon.slu.se/200506.pdf.
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Pettersson, C. G. "Predicting malting barley protein concentration : based on canopy reflectance and site characteristics /." Uppsala : Dept. of Crop Production Ecology, Swedish University of Agricultural Sciences, 2007. http://epsilon.slu.se/200756.pdf.
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Zhao, Hongwei. "Local tunneling characteristics near a grain boundary of a d-wave superconductor as probed by a normal-metal or a low-Tc-superconductor STM tip." Texas A&M University, 2005. http://hdl.handle.net/1969.1/2373.
Full textAbstract:
We studied the local single-particle tunneling characteristics [as observed with scanning
tunnel microscopy (STM)] for N D and S D tunneling, where N is a normal
metal, S is a s-wave superconductor, and D is a d-wave superconductor with
a {100} | {110} grain boundary. The tunneling Hamiltonian method was used. The
self-consistent order parameter is first determined using the quasiclassical Green'sfunction
method, and then the tunneling characteristics at various distances from
the interface, reectivity of the interface, and temperature are studied. For N D
tunneling, a zero-bias conductance peak (ZBCP) occurs near the interface with diminishing
magnitude away from it. For S D tunneling, the ZBCP splits to exhibit
the gap of the s-wave low-Tc superconducting tunneling tip and there is a range of
negative conductance just outside the peaks when the tunneling point is near the
grain boundary. The results are compared with those obtained by using a constant
order parameter in each grain.
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Jovana, Petrović. "Valorizacija nutritivnog profila keksa proizvedenog sa dodatkom sporednih proizvoda prehrambene industrije." Phd thesis, Univerzitet u Novom Sadu, Tehnološki fakultet Novi Sad, 2018. https://www.cris.uns.ac.rs/record.jsf?recordId=107095&source=NDLTD&language=en.
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Zadatak ove teze je da se ispita uticaj zamene dela pšeničnog brašna ekstrudiranim snek proizvodima obogaćenim dodatkom pšenične klice, pivskog tropa i tropa jabuke na svojstva testa (boja, fizička, reološka) kao i na karakteristike čajnog peciva (fizičke, senzorske, nutritivne, trajnost, mikrobiološke). U toku preliminarnih ispitivanja (prva faza eksperimentalnog rada) ispitan je uticaj obezmašćene pšenične klice na kvalitet testa i čajnog peciva u cilju definisanja optimalnog nivoa zamene pšeničnog brašna ekstrudatima kukuruzne krupice sa dodatkom sporednih proizvoda prehrambene industrije i optimalnog sadržaja vlage testa. Pšenično brašno je u količini od 5, 10 i 15 % zamenjeno obezmašćenom pšeničnom klicom. Pored uticaja nivoa zamene pšeničnog brašna pšeničnom klicom, ispitan je i uticaj veličine čestica pšenične klice (<150 μm, 150-1000 μm i 800-2000 μm), kao i vlage testa pri zamesu (20, 22 i 24 %). U toku druge faze eksperimentalnog rada ove doktorske disertacije, pripremljeni su ekstrudati kukuruzne krupice sa dodatkom sporednih proizvoda prehrambene industrije i to: pšenične klice, pivskog tropa i tropa jabuke u udelima 15, 30 i 45 % (odnos kukuruzna krupica:sporedni proizvod bio je 85:15, 70:30 i 55:45). Dobijeni ekstrudati su samleveni i prosejani na sitima u cilju dobijanja tri frakcije sa različitim veličinama čestica (< 250 μm, 250 - 1000 μm i 1000 - 2000 μm). Izvršena je karakterizacija ekstrudata u smislu određivanja hemijskog sastava, raspodele veličine čestica, boje i mikrobiološke analize. Ovako dobijeni ekstrudati su zatim korišćeni u proizvodnji čajnog peciva kao zamena pšeničnog brašna u količinama od 5, 10 i 15 % računato na masu brašna. Za procenu uticaja veličine čestica ekstrudata, udela sporednog proizvoda u ekstrudatu i udela ekstrudata u čajnom pecivu na osobine testa i čajnog peciva takođe je korišćen Box-Behnken eksperimentalni dizajn. Rezultati su pokazali da je moguća proizvodnja funkcionalnog čajnog peciva sa dodatkom ekstrudata kukuruzne krupice obogaćene sporednim proizvodima prehrambene industrije, pri čemu se poboljšava nutritivni profil čajnog peciva, bez negativnih efekata na fizičke i senzorske karakteristike gotovog proizvoda.The aim of this study is to examine the effect of replacing a portion of wheat flour with extruded snack products enriched with the addition of wheat germ, brewer's spent grain and apple pomace on the rheological and textural properties of dough and on characteristics of cookies (physical, sensory, nutritive, microbiological). During the preliminary analysis (the first phase of the experimental work), the influence of defatted wheat germ particle size, wheat germ content and dough moisture content on the quality of the dough and the cookies was investigated using the Box-Behnken experimental design. During the second phase of the experimental work, the extruded corn meal with the addition of by-products of the food industry (wheat germ, brewer's spent grain and apple pomace) were prepared (the ratio of corn meal: by-product was 85:15, 70:30 and 55:45). The obtained snack products are milled and sieved to obtain 3 fractions with different particle sizes (<250 μm, 250-1000 μm and 1000-2000 μm). Characterization of the extrudates in terms of determining the chemical composition, particle size distribution, color and microbiological analysis was performed. The obtained extrudates were then used in the production of cookies for the replacement of wheat flour in quantities of 5, 10 and 15%. The Box-Behnken experimental design was used to evaluate the influence of the extrudate particle size, the share of the by-product in the extrudate, and the share of extrudates in the cookies, on the dough properties and cookies characteristics.The results showed that the corn snack products enriched with food industry by-products (brewer's spent grain, wheat germ and apple pomace) can be used for production of functional cookies. These additives in an amount up to 15% improving the nutritional profile of the cookies, without adverse effects on the physical and sensory characteristics of the final product.
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Tan, Evren. "The Effect Of Hot-deformation On Mechanical Properties And Age Hardening Characteristics Of Al-mg-si Based Wrought Aluminum Alloys." Master's thesis, METU, 2006. http://etd.lib.metu.edu.tr/upload/12607937/index.pdf.
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Microstructural and mechanical characterizations of heat treatable Al-Mg-Si-Cu based wrought aluminum alloys have been studied. The aim of this work was to produce fine grained, high strength alloy by adjusting processing conditions: deformation, solutionizing and aging.
First, primary characterization was carried out via SEM-EDS analyses and tensile tests. Then an extensive experimental study has been carried out on two sets of samples. The first set has been studied to determine the ideal conditions for solutionizing and aging processes by analyzing the variation of hardness with different solutionizing and aging time and temperature. The second set, have first been mechanically deformed by swaging at four different deformations and four different temperatures, then heat treated. The hardness measurements have been carried out before and after solutionizing and also after aging. Finally, recrystallization behavior has been investigated by measuring grain size before and after solutionizing treatment using image analyzer software.
The initial characterizations showed that Mg2Si and complex iron, manganese bearing intermetallics were the primary particles observed in the α
-Al matrix. Nearly 140HB hardness could be obtained with solutionizing at 530°
C and aging at 175°
C for 8 hours which was determined as the optimum treatment for obtaining peak hardness. When shaping (deformation) was concerned
strength loss was the overall outcome of any hot or cold deformation before solutionizing
which was most probably due to the destruction of the initial microstructure. Improvement in the percent elongation was the promising aspect of this application. Strength loss was increased for samples deformed at higher temperatures and higher reductions.
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Gedraitienė, Marytė. "Tręšimo įtaka žieminių kviečių grūdų kokybiniams rodikliams." Master's thesis, Lithuanian Academic Libraries Network (LABT), 2011. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2011~D_20110603_113904-98085.
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Tyrimai, siekiant išsiaiškinti, kaip keičiasi fotosintetinių rodiklių intensyvumas ir grūdų kokybė bei derlingumas priklausomai nuo augimo tarpsnio bei tręšimo azotinėmis trąšomis, atlikti 2009-2010 metais. Pigmentų ir tirpiųjų sacharidų kiekis tirtas Agrobiotechnologijos laboratorijoje, o grūdų kokybės rodikliai ištirti AB „Kauno grūdai“ laboratorijoje. Žieminiai kviečiai auginti Lietuvos žemės ūkio universiteto Bandymų stotyje, kur dirvožemis IDg8-k (LVg-p-w-cc) – karbonatingas sekliai glėjiškas išplautžemis (Calc(ar)i-Epihypogleyic Luvisols). Tyrimamas pasirinktos dvi žieminių kviečių veislės: labai gerų kepimo savybių ’Ada’ ir gerų kepimo savybių ’Tauras DS’. Buvo tiriama, kaip vegetacijos metu kinta pigmentų ir sacharidų kiekis augalų lapuose ir kaip azoto trąšos įtakojo baltymų, šlapiojo glitimo, sedimentacijos, krakmolo, kritimo skaičiaus pokyčius grūduose ir grūdų derlingumą. Azoto trąšos augaluose skatino bendrą pigmentų kiekio didėjimą, o tirpiųjų sacharidų kaupimuisi esminės įtakos neturėjo. Taip pat azoto trąšos beveik visuose variantuose patikimai skatino baltymų kaupimąsi grūduose, didino sedimentaciją ir šlapiojo glitimo kiekį, o krakmolo kiekis mažėjo atvirkščiai proporcingai baltymų kiekiui. Tręšimas azoto trąšomis visuose variantuose patikimai didino derlingumą.The research was carried out in the period from 2009 to 2010 to determine the changes in the intensity of photosynthetic characteristics ,grain quality and yield, depending on the growth phase and fertilization with nitrogen fertilizer. The amount of pigments and soluble sugars was investigatd in the laboratory of Agrobiotechnology and the indicators of grain quality were explored in the laboratory of JSC „Kauno grūdai“. Winter wheat were grown in the Experimental Station of Lithuanian University of Agriculture, where the soil is IDg8 k (LVD-pw-cc) - calcareous shallow Luvisols (Calc (or) i Epihypogleyic Luvisols). Two varieties of winter wheat were selected for the experimental study: ’Ada’ with a very good baking properties and ’Tauras DS’ with good baking properties. The research focused on how vegetation changes affect the pigment and sugars content in the plant leaves, as well as the influence of nitrogen fertilizers on the grain yield and changes in content of protein, wet gluten, sedimentation and starch in the investigated grain. The results suggest that the nitrogenous fertilizers stimulated the overall growth of the cultivar, the pigment content but it had no significant effect on the accumulation of soluble sugars .Moreover, almost in all cases of the nitrogen fertilizer treatments it significantly promoted the accumulation of grain protein, increased sedimentation and wet gluten content however the starch content decreased inversely with the protein. The grain... [to full text]
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Elfverson, Cajsa. "Analysis of physical and chemical properties of fractionated grains and seeds with an emphasis on barley /." Uppsala : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 1999. http://epsilon.slu.se/avh/1999/91-576-5708-4.pdf.
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Jardini, Debora Curado. "Aspectos morfológicos e estado nutricional em genótipos de girassol cultivados em um latossolo vermelho distrófico típico." Universidade Federal de Mato Grosso, 2014. http://ri.ufmt.br/handle/1/539.
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CAPES
A variabilidade de comportamento entre espécies vegetais, mesmo entre genótipos, geralmente proporciona diferenças na capacidade de absorção de nutrientes. Como a exigência entre cultivares da mesma espécie são distintas é comum observar acúmulo diferenciado de nutrientes, bem como, variações de caracteres fenotípicos, sob as mesmas condições de cultivo para o mesmo ano agrícola. Assim, este trabalho teve por objetivo avaliar aspectos morfológicos, bem como, diagnosticar a concentração e o acúmulo de nutrientes nas folhas de diferentes genótipos de girassol e sua relação com o rendimento da cultura. O experimento foi realizado na área experimental do IFMT (Campus São Vicente), localizado no município de Santo Antônio do Leverger-MT. O delineamento experimental utilizado foi o de blocos casualizados, utilizando-se oito genótipos (M734; HELIO 358; Embrapa 122; HLE 23; MG 341; BRS G37; BRS G41 e V90631), com quatro repetições. Foram aplicados no momento da semeadura 570 kg ha-1 do formulado 4-14-8 e 2 kg ha-1 de boro na forma de borogran. A semeadura foi realizada em dezesseis de março de 2013. A adubação de cobertura foi realizada trinta dias após a emergência das plantas, aplicando-se ureia na proporção de 87 kg ha-1 e 57 kg ha-1 de KCL. Não ocorreu variação entre os aspectos morfológicos e o acúmulo de nutrientes na massa seca das folhas para os oito genótipos avaliados no estádio R3. A concentração foliar de K e Ca foram distintas entre os genótipos de girassol. Os maiores rendimentos de grãos foram obtidos para os genótipos BRS G37, HLE 23, M734 e HELIO 358. Os aspectos morfológicos, a concentração de nutrientes foliares e rendimento de grãos se correlacionaram positivamente.
The variability in the behavior of plant species, even among genotypes generally provides differences in the absorption capacity of nutrients. As demands among cultivars of the same species are distinct is common to observe differential accumulation of nutrients, as well as variations in phenotypic characters under the same growing conditions for the same crop year. This study aimed to evaluate morphological, as well as diagnose concentration and nutrient accumulation in leaves of different sunflower genotypes and its relationship with crop yield. The experiment was conducted in the experimental area IFMT (Campus St. Vincent), located in the municipality of Santo Antônio do Leverger - MT. The experimental design was a randomized block design using eight genotypes (M734; HELIO 358; Embrapa 122; HLE 23; MG 341; BRS G37; BRS G41 and V90631) with four replications. 570 kg ha-1 formulated 4-14-8 and 2 kg ha-1 of boron were applied at planting as borogran. Seeds were sown on March 16, 2013. A fertilization was performed thirty days of plant emergence, applying urea in the proportion of 87 kg ha-1 and 57 kg ha-1 of KCL. There was no variation between the morphology and nutrient accumulation in leaf dry weight for the eight genotypes used in the R3 stage. The leaf concentration of K and Ca were distinct among sunflower genotypes. The highest grain yields were obtained for the BRS G37, HLE 23, M734 and HELIO 358. Morphological aspects, the leaf nutrient content and yield were positively correlated.
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BERRUYER, DESIROTTE NICOLE. "Contribution a l'etude des enveloppes circumstellaires : effet du couplage grains-gaz." Nice, 1987. http://www.theses.fr/1987NICE4157.
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L'enveloppe d'une etoile est particulierement importante a sa naissance, son origine etant proto-stellaire, et aux phases finales de son evolution ou la matiere ejectee par la matiere forme un cocon entourant l'etoile. La description de ces enveloppes circumstellaires depend donc de sa constitution et du rayonnement emis par l'objet stellaire central. On precise les criteres observationnels d'un objet en formation en fonction de sa masse; et pour les objets evolues, on decrit un modele de vent stellaire tenant compte des grains de poussieres et de la pression de radiation
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Eu, Ming Tee. "Reflectance characteristics of bulk grains using a spectrophotometer." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp05/mq23296.pdf.
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Olsen, Danielli. "Variabilidade e desempenho de plantas de soja em função da qualidade fisiológica de sementes." Universidade Federal de Pelotas, 2016. http://repositorio.ufpel.edu.br:8080/handle/prefix/3354.
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Sem bolsa
O desempenho agronômico de plantas de soja pode ser influenciado pela qualidade fisiológica das sementes. Foram realizados dois experimentos na Área experimental e didática do Departamento de Fitotecnia e no Laboratório de Análises de Sementes do Programa de Pós-Graduação em Ciência e Tecnologia de Sementes da Universidade Federal de Pelotas nos anos agrícolas 2012/2013 e 2013/2014 e objetivaram avaliar o efeito da qualidade das sementes sobre o comportamento agronômico de plantas de soja. No primeiro experimento, avaliou-se o efeito da qualidade fisiológica de sementes sobre o comportamento de plantas isoladas de soja em função do hábito de crescimento. Foram utilizadas sementes de soja das cultivares BMX Turbo RR de hábito de crescimento indeterminado e da cultivar BMX Ativa RR de hábito de crescimento determinado de alto e baixa qualidade fisiológica das sementes, respectivamente. Para a obtenção dos níveis de qualidade fisiológica para ambos os hábitos de crescimento foram selecionados lotes de alta qualidade fisiológica caracterizados através dos testes de germinação e vigor. Os níveis de baixa qualidade foram obtidos através do envelhecimento artificial de parte dos lotes de alta qualidade para ambos os hábitos de crescimento. No segundo experimento objetivou-se avaliar a distribuição da variabilidade e o desempenho agronômico entre as plantas no crescimento inicial, componentes do rendimento e produtividade de grãos de plantas isoladas de soja em função da qualidade fisiológica das sementes. Foram utilizadas sementes da cultivar Potência RR de dois níveis de qualidade, alta e baixa qualidade fisiológica. Os parâmetros do crescimento inicial das plantas isoladas de soja avaliados foram altura da planta, número de folhas, área foliar e matéria seca aos 10, 20, 30 e 40 DAE (dias após a emergência). As características morfológicas e componentes do rendimento de plantas isoladas de soja foram determinados através da avaliação da altura das plantas na colheita, diâmetro do caule, altura de inserção da primeira vagem, número de ramos, número de vagens por planta, número de sementes por planta e rendimento por planta. Plantas isoladas de soja apresentam crescimento inicial superior quando são utilizadas sementes de alta qualidade e o efeito no desempenho das plantas independe do hábito de crescimento das mesmas. A qualidade fisiológica das sementes influencia o rendimento das plantas e aumentos de 8 a 12% foram observados quando se utilizaram sementes de alta qualidade fisiológica. Lotes de sementes de maior qualidade fisiológica apresentam menor variação na qualidade fisiológica entre as sementes componentes do lote.
The agronomic performance of soybean plants may be influenced by physiological seed quality. Two experiments were conducted at the Experimental and Didactic Plant Science Department and Analysis Laboratory of the Graduate Program Seed Science and Seed Technology at Universidade Federal de Pelotas in the agricultural years 2012/2013 and 2013/2014 and aimed to evaluate the effect of seed vigor on the agronomic behavior of soybean plants. In the first experiment, the effect of physiological quality seeds on isolated plants of soybean behavior due to the growth habit. Soybean seeds were used BMX Turbo RR cultivars of indeterminate growth habit and cultivate BMX Active RR determined growth habit of greater and less physiological quality seeds, respectively. To obtain the high vigor seeds levels for both growth habits were selected lots of greater physiological quality characterized by the germination and vigor tests. Low quality levels were obtained through artificial aging of the batch high physiological quality for both growth habits. In the second experiment aimed to evaluate the distribution of variability and the agronomic performance of the plants in early growth, yield components and grain yield of isolated soybean plants in relation to physiological seed quality. Were used seeds of soybean cultivar BMX Potência RR of two quality levels, greater and less physiological seed quality. The parameters of the initial growth of individual plants evaluated were soybean plant height, leaf number, leaf area and dry matter at 10, 20, 30 and 40 DAE (days after emergence). The morphological characteristics and yield components of isolated soybean plants were determined by evaluating the plant height at harvest, stem diameter, height of first pod, number of branches, number of pods per plant, number of seeds per plant and yield per plant. Isolated soybean plants have higher initial growth when greater physiological seed quality are used, and the effect of physiological seed quality on plant performance does not depend on their growth habit. The physiological seed quality affects the yield of plants and increases from 8 to 12% have been observed when used greater physiological quality of seeds. Seeds lots of greater physiological quality show less variation in the physiological quality of the seeds components of the lot.
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Reader, Scott W. "Effects of distiller's grains on performance and meat quality in steers at 70% inclusion." OpenSIUC, 2010. https://opensiuc.lib.siu.edu/theses/308.
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The objective of this study was to examine the effects of 70% (DM) inclusion of dried distillers' grain with solubles (DDGS) on performance and meat quality. Ninety-six Angus steers (276 kg ± 7.5 kg initial BW) were used in an completely randomized design with incomplete replication. Steers were stratified by BW to pens and pens were randomly assigned to one of 6 treatments: 1) 80% corn; 5% soybean meal; 15% corn silage, fed as a negative control (CON); 2) 40% DDGS: 45% corn: 15% corn silage, fed as a positive control (PCON); 3) steers received PCON (0-84d) then switched to a diet of 70% DDGS: 15% corn: 15% corn silage until finished (40/70); 4) steers started on 70% DDGS: 15% corn: 15% corn silage (0-84d) then switched to PCON until finished (70/40); 5) CON + soybean meal, isonitrogenous to PCON (N40); 6) CON + corn oil, isocaloric to PCON (E40). Steers were fed respective treatments until 80% of them reached low choice or higher by visual appraisal, providing their genetics allowed (168 and 213 days). Dry matter intake, DMI, (P &ge 0.82) was not affected by treatment, isocaloric, or isonitrogenous diets. End weight was greater (P = 0.04) for PCON steers compared to N40 steers. However, no treatment effect (P &ge 0.15) on G:F. Dietary treatment did not affect HCW, quality grade, %KPH, or liver score (P &ge 0.12). Yield grade was not affected (P = 0.12) by treatment but tended to be lower (P = 0.06) for N40 steers compared to PCON steers. However, N40 steers had a larger (P = 0.04) ribeye area and greater rib fat (P = 0.05) when compared to PCON and ribeye tended (P = 0.06) to be smaller in 70/40 and E40 steers compared to all other treatments. Minotola color, % cook loss, shear force, total SFA, total PUFA, total MUFA or lipogenic activity were not affected (P &ge 0.08) by treatment. The data of this study suggests that it is possible to feed 70% DDGS in feedlot rations with little to no adverse effects on growth performance or meat quality.
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TERAGUCHI, Hiroshi. "Study on Hydraulic and Morphological Characteristics of River Channel with Groin Structures." 京都大学 (Kyoto University), 2011. http://hdl.handle.net/2433/151951.
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Kassetas, Cierrah Jordan. "Effects of Feeding 60% Dried Corn Distillers Grains Plus Solubles on Yearling Bull Reproduction." Thesis, North Dakota State University, 2020. https://hdl.handle.net/10365/31799.
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Thirty-six half-sibling Angus bulls were assigned one of three diets: 1) 60% corn-based (CON; S = 0.18%; n = 12); 2) 60% DDGS replacing corn (60DDGS; S = 0.55% DM; n = 12); 3) CON diet + equivalent sulfur of 60DDGS added as calcium sulfate (SULF; S = 0.54%; n = 12) to evaluate the effects of feeding diets containing DDGS or calcium sulfate on performance and semen characteristics. Bulls began the study at 9 months of age and gained 1.6 kg/day for 112 days. Treatment by day interactions (P < 0.05) were observed for glutathione peroxidase and trace mineral concentrations in seminal plasma. Effects of treatment (P < 0.05) were observed for semen kinematics and triiodothyronine in serum. Alterations observed when feeding 60% DDGS to developing bulls occurred in a manner that is not dependent on dietary sulfur; therefore, observed changes could be related to other components within DDGS.
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Oliveira, Ludmilla de Carvalho 1985. "Antioxidant properties and physical, sensory and nutritional characteristics of extruded corn-based breakfast cereal elaborated with whole grain wheat flour and jabuticaba (Myrciaria cauliflora) peel powder : Propriedades antioxidantes e características físicas, sensoriais e nutricionais de cereal matinal extrusado elaborado com farinha de trigo de grão inteiro e casca de jabuticaba (Myrciaria cauliflora) em." [s.n.], 2015. http://repositorio.unicamp.br/jspui/handle/REPOSIP/256006.
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Orientador: Caroline Joy SteelTese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia de Alimentos
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Resumo: A extrusão é a principal tecnologia utilizada na obtenção de cereal matinal ready-to-eat (RTE), sendo o amido o principal constituinte estrutural. O processo ocorre sob condições de alta temperatura, alta pressão, baixa umidade e cisalhamento. Atentos à crescente demanda de consumidores preocupados com a saúde, estudos têm mostrado que é possível introduzir ingredientes na formulação de extrusados que incrementem o seu valor nutricional e/ou funcional e, no caso de cereal matinal, a farinha de trigo de grão inteiro e os produtos derivados de frutas são exemplos com potencial de associar funcionalidade ao produto. O objetivo deste trabalho foi avaliar o efeito da substituição da farinha de milho (FM) por farinha de trigo de grão inteiro (FTGI), da umidade de alimentação da matéria-prima e da temperatura de extrusão sobre as propriedades tecnológicas, sensoriais e nutricionais de cereal matinal RTE. Os cereais matinais foram elaborados seguindo um delineamento composto central rotacional 23 (18 ensaios), sendo as variáveis independentes: proporção de FTGI, umidade de alimentação da matéria-prima e temperatura das zonas 3 e 4 da extrusora. Os produtos extrusados foram avaliados quanto aos aspectos físicos, químicos, nutricionais e sensoriais. O ponto ótimo foi selecionado de forma empírica, tendo como critérios de definição expansão intermediária, máximo teor de fibra alimentar (considerando os valores estabelecidos pela legislação), mínima dureza e máxima crocância, principalmente após imersão em leite. Com base nisso, quatro formulações de cereal matinal foram processadas nas condições de temperatura e umidade do ponto ótimo (100°C e 16%, respectivamente) e com inclusão de casca de jabuticaba em pó (CJP), sendo: (1) 100% de FM; (2) 20% FM + 80% FTGI; (3) 10% FM + 10% CJP + 80% FTGI e (4) 90% FM + 10% CJP. Os cereais resultantes foram igualmente avaliados quanto a sua qualidade tecnológica (índice de expansão, densidade aparente, textura a seco, textura em leite, índice de solubilidade em água, índice de absorção de água), nutricional (fibra alimentar total, perfil de fenólicos e atividade antioxidante) e sensorial (testes de aceitação e de intenção de compra). O perfil de fenólicos e a atividade antioxidante dos cereais matinais e matérias-primas foram avaliados por cromatografia líquida de alta eficiência (CLAE) e pela capacidade de absorbância do radical oxigênio (ORAC). A combinação de FTGI com FM foi uma boa alternativa para o incremento do teor de fibra alimentar nos produtos extrusados. As propriedades de textura dos extrusados, dureza e crocância, foram principalmente influenciadas pela FTGI e umidade de alimentação; com alterações nas propriedades após imersão em leite. Em relação à cor, os cereais elaborados com alto teor de FTGI à alta temperatura ou alto teor de umidade foram mais escuros. A natureza do amido, tão bem como a presença de fibra governou o processo de gelatinização, a formação do complexo amilose-lipídeo e a retrogradação. Os cereais matinais contendo FTGI e CJP apresentaram aceitáveis características físicas e sensoriais. Antocianinas, cianidina 3-glicosídeo e delfinidina 3-glicosídeo, e ácido ferúlico foram os compostos fenólicos predominantes na CJP e FTGI, respectivamente, e também presentes nos cereais após extrusão, os quais apresentaram atividade antioxidante in vitro
Abstract: Extrusion is the main technology used to obtain "ready-to-eat" (RTE) breakfast cereals, being starch their main structural component. The process submits the ingredients to conditions of high temperature, high pressure, low moisture, and shear. Aware of the growing demand of consumers concerned with their health, studies have shown that is possible to introduce ingredients that enhance the nutritional and/or functional value of extruded products and, in the case of breakfast cereals, whole-grain wheat flour and fruit products are examples with the potential of associating functionality to the product. The objective of this study was to evaluate the effect of the substitution of corn flour (CF) by whole-grain wheat flour (WGWF), extrusion temperature and raw-material moisture content on the technological, sensory and nutritional properties of RTE breakfast cereals. The breakfast cereals were produced following a 23 central composite rotatable design (18 trials), being the independent variables: WGWF ratio, feed moisture and temperature of 2rd and 3th barrel zones. The extruded products were evaluated in terms of physical, chemical and nutritional aspects. The optimum point (OP) was selected, empirically, considering intermediate sectional expansion, maximum dietary fiber (legislation value), minimum compression force and maximum crispness, mainly after immersion in milk. In a second stage, four breakfast cereal formulations were processed at temperature and feed moisture corresponding to the OP (100°C and 16%, respectively) and with jabuticaba peel powder (JPP) inclusion, being: (1) 100% CF; (2) 20% CF + 80% WGWF (3) 10% CF + 10% JPP + 80% WGWF e (4) 90% CF + 10% JPP. The breakfast cereals were evaluated in terms of technological (expansion index, bulk density, dry texture, texture after soaking in milk, water solubility index and water absorption index), nutritional (total dietary fiber) and sensorial quality (sensorial acceptability and purchase intention). The phenolic profile and antioxidant activity of cereals and raw materials were also evaluated by high performance liquid chromatograph (HPLC) and oxygen radical absorbance capacity (ORAC assay), respectively. The combination of wholemeal wheat flour with corn flour was a good alternative for increasing the fibre content of extruded products. The textural properties of the extrudates, hardness and crispness, were mainly influenced by WGWF and feed moisture; with changing in properties after soaking in whole milk. In relation to color, the extrudates elaborated with high amount of WGWF at high temperature or high feed moisture content was darker. The starch nature as well the fiber presence governed the starch transformations and interactions (gelatinization, amylose-lipid formation and retrogradation). The low sugar breakfast cereals from WGWF and JPP showed acceptable physical and sensory characteristics. The anthocyanins, cyanidin 3-glucoside (cyd-gluc) and delphinidin 3-glucoside (dpd-gluc), and ferulic acid were the predominant phenolic compounds in raw materials (JPP and WGWF, respectively), and were also identified in extrudates, which showed in vitro antioxidant activity
Doutorado
Tecnologia de Alimentos
Doutora em Tecnologia de Alimentos
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Zabot, Lucio. "Caracterização agronômica de cultivares transgênicas de soja cultivadas no Rio Grande do Sul." Universidade Federal de Santa Maria, 2009. http://repositorio.ufsm.br/handle/1/3186.
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Coordenação de Aperfeiçoamento de Pessoal de Nível SuperiorAiming to characterize the main transgenic soybeans cultivars used in Rio Grande do Sul, experiments were conducted during the 2007/2008 season, in Santa Maria/RS. In the field, the cultivars Relmo Anta RR 82, A 6001 RG, A 8000 RG, FUNDACEP 53 RR, FUNDACEP 54 RR, FUNDACEP 56 RR, BRS 244 RR, and CD 214 RR CD 219 RR, drilled at seeds rates of 250, 400 and 550 thousand seed ha-1 and at row spacing of 0.30, 0.45 and 0.60m. The variables were: grain yield, yield components, distribution of income in different strata of the plant, morphological characteristics, rate of soil covering and amount of light incident on the canopy. The experimental design was a randomized blocks, with 4 repetitions in trifatorial outline (9 cultivars x 3 seed rates x 3 row spacing). In laboratory, tests of peroxidase reaction had been carried through only using the tegument of the seeds or the entire seeds and also seedling color for 50 soybean cultivars. For the grain yield cultivars CD 214 RR and FUNDACEP 53 RR had the best results (3589 and 3530 kg ha-1, respectively). For the distribution of income in the plant strata, there is interaction between density of planting and row spacing, which indicate the trends for each cultivar. For the amount of light incident on the canopy, the interactions between the factors of planting density, row spacing, timing of the cycle of development and level of the canopy, combined with the architecture of each cultivar define the amount of light intercepted, after flowering. The morphological response of each cultivar is different for every situation tested, indicating the need for understanding the behavior of each material, to select the practices to maximize the yield. The use of the test of reaction of peroxidase used the entire seed can be used of so efficient form how much the traditionally used method (tegument). The identification of the seedling color may be an early way to identify varietal blend.
Com o objetivo de caracterizar as principais cultivares transgênicas de soja utilizadas no Rio Grande do Sul, foram realizados experimentos durante a safra agrícola 2007/2008, em Santa Maria/RS. Em campo, as cultivares Relmo Anta 82 RR, A 6001 RG, A 8000 RG, FUNDACEP 53 RR, FUNDACEP 54 RR, FUNDACEP 56 RR, BRS 244 RR, CD 214 RR e CD 219 RR foram submetidas às densidade de semeadura de 250, 400 e 550 mil semente ha-1 e aos espaçamentos entre linhas de 0,30, 0,45 e 0,60m. As variáveis avaliadas foram: rendimento de grãos, componentes do rendimento, distribuição do rendimento em diferentes estratos da planta, características morfológicas, taxa de cobertura do solo e quantidade de luz incidente no dossel. O delineamento experimental utilizado foi o de blocos ao acaso, com 4 repetições, no esquema trifatorial (9 cultivares x 3 densidades de semeadura x 3 espaçamentos entre linhas). Em laboratório, foram realizados testes de reação da peroxidase utilizando somente o tegumento das sementes ou as sementes inteiras e também coloração do hipocótilo para 50 cultivares de soja. Para o rendimento de grãos as cultivares CD 214 RR e FUNDACEP 53 RR apresentaram os melhores resultados (3589 e 3530 kg ha-1, respectivamente). Para a distribuição do rendimento nos estratos da planta, existe interação entre densidade de semeadura e espaçamento entre linhas, os quais indicam as tendências para cada cultivar. Para a quantidade de luz incidente no dossel, as interações entre os fatores densidade de semeadura, espaçamento entre linhas, época do ciclo de desenvolvimento e nível do dossel, aliados à arquitetura de cada cultivar definem a quantidade de luz interceptada, após o florescimento. A resposta morfológica de cada cultivar é diferenciada para todas as situações testadas, indicando a necessidade do conhecimento do comportamento de cada material, para a escolha das práticas que visem maximizar o rendimento de grãos. O uso do teste de reação da peroxidase utilizando a semente inteira pode ser utilizado de forma tão eficiente quanto o método tradicionalmente utilizado (tegumento). A identificação da coloração do hipocótilo pode ser uma forma precoce de identificar mistura varietal.
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Feoli, Carolina. "Use of corn- and sorghum-based distillers dried grains with solubles in diets for nursery and finishing pigs." Diss., Manhattan, Kan. : Kansas State University, 2008. http://hdl.handle.net/2097/1022.
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Aziz, Mubashir [Verfasser]. "Experimental Study on Effects of Deterioration of Grains on Deformation and Strength Characteristics of Soils / Mubashir Aziz." München : GRIN Verlag, 2011. http://d-nb.info/1190002485/34.
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Fiorda, Fernanda Assumpção. "Development of new potentialy probiotic honey beverage fermented by kefir grains = functional properties, molecular microbiological characteristics and technological aspects." reponame:Repositório Institucional da UFPR, 2016. http://hdl.handle.net/1884/43025.
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Orientador : Prof. Dr. Carlos Ricardo SoccolTese (doutorado) - Universidade Federal do Paraná, Setor de Tecnologia, Programa de Pós-Graduação em Tecnologia de Alimentos. Defesa: Curitiba, 29/04/2016
Inclui referências : f. 51-57-78-852-104-105-122-124
Resumo: O kefir é tradicionalmente uma bebida produzida a partir de leite através da inoculação de grãos de kefir, uma associação microbiana complexa entre leveduras e bactérias. No entanto, a adaptação de grãos de kefir em diversos outros substratos nãolácteos levou à produção de diferentes bebidas com propriedades funcionais. O objetivo desta tese foi avaliar o uso de diferentes substratos funcionais (extrato de soja hidrolisado, colostro e mel) para o desenvolvimento de novas bebidas probióticas, utilizando grãos de kefir como cultura iniciadora e avaliar a sua capacidade antioxidante e composição físico-química. Além disso, explorar o processo de fermentação de mel com grãos de kefir através de um estudo abrangente de suas propriedades reológicas, cinética em condição de biorreator (fermentação e processo de armazenamento), composição microbiana, potencial antimicrobiano e probiótico, efeito de proteção em danos causados ao DNA e análise sensorial, comparando-a com a bebida tradicional de kefir. A bebida de kefir a base de mel teve maior atividade antioxidante, quando comparada com os substratos extrato de soja hidrolisada e colostro. Altos níveis de bactérias ácido lácticas e populações de levedura (acima de 106 CFU/mL) foram encontrados no produto, compostas principalmente de potenciais estirpes probióticas de Lactobacillus statsumensis, Leuconostoc mesenteroides, Bacillus megaterium, Saccharomyces cerevisiae e Lachancea fermentati. Além disso, a bebida à base mel fermentada com kefir apresentou efeito de proteção contra danos no DNA, com elevada qualidade sensorial quando comparada à bebida tradicional de kefir. Os grãos de kefir foram bem adaptados às condições do biorreator, atingindo altos níveis de viabilidade celular (acima de 106 UFC / mL para levedura e bactérias totais), tendo considerável produção de compostos fenólicos (190 GAE / 100g). Luminosidade L * e croma a * não sofreram grandes alterações e croma b * decresceu durante o tempo de fermentação. Após 35 dias de armazenamento, a bebida de mel fermentada com grãos de kefir manteve as suas características químicas e viabilidade microbiana necessária para ser classificado como um produto probiótico. Os modelos de Ostwald-De Waele (R2 ? 0,98) e de Herschel-Bulkley (R2 ? 0.99) podem ser utilizados para predizer o comportamento da bebida desenvolvida. Os isolados estudados (L. satsumensis, L. mesenteroides e S. cerevisiae) demonstraram resistência a condições ácidas (pH 2.0, 3.0, 4.0 e 7.0) e aos sais biliares (0.3% e 0.6%), apresentando habilidade de sobrevivência na presença de suco gastrointestinal, não demonstrando atividade hemolítica. Todos os isolados apresentaram atividade antagônica frente a E. coli e S. aureus (acima de 7.0 mm). L. satsumensis foi a cepa mais resistente. A bebida de mel fermentada com kefir teve alta atividade antimicrobiana (19.5 a 27.5 mm). L. satsumensis, L. mesenteroides e S. cerevisiae podem ser classificadas como potenciais probióticos. Bebidas à base de kefir têm se apresentado como uma forma alternativa para a produção de bebidas funcionais com atividades probióticas, especialmente para pessoas com necessidades especiais (intolerância à lactose) e para consumidores veganos. O mel pode ser um substrato alternativo ideal para a produção de bebidas de cultura funcional, especialmente para os vegetarianos e consumidores intolerantes à lactose. Os parâmetros analisados durante o processo de bebida a base de mel fermentada com grãos de kefir podem ser considerados relevantes para a produção de uma nova bebida, auxiliando na industrialização deste bioprocesso.
Abstract: Kefir is traditionally a beverage produced from milk by inoculating kefir grains, a complex microbial association between yeast and bacteria. However, adaptation of kefir grains in many other non-dairy substrates has led to production of different beverages with functional properties. The aim of this thesis was to evaluate the use of different functional substrates (soybean hydrolyzed extract, colostrum and honey) to design a novel probiotic beverages using kefir grains as starter culture and evaluate its antioxidant capacity and physical-chemical composition. In addition, explore the fermentation process of honey with kefir grains through a comprehensive study of its rheological properties, kinetic in bioreactor condition (fermentation and storage process), microbial composition, antimicrobial and probiotic potential, protection effect on DNA damage and sensory analysis when compared with traditional kefir beverage. The probiotic potential and antimicrobial properties of Lactobacillus satsumensis, Leuconostoc mesenteroides and Sacharomyces cerevisiae, isolated from honey kefir beverage, was also investigated. Honey-based kefir beverage had higher antioxidant activity when compared with soybean hydrolyzed extract and colostrum substrates. High levels of lactic acid bacteria and yeast populations (over 106 CFU/mL) were found in the product and were mainly composed of potential probiotic strains of Lactobacillus statsumensis, Leuconostoc mesenteroides, Bacillus megaterium, Saccharomyces cerevisiae and Lachancea fermentati. In addition, the honey-based kefir beverage showed protection effect on DNA damage and had a high sensory quality compared to traditional kefir beverage. Kefir grains were well adapted to bioreactor conditions, reached high levels of cell viability (over 106 CFU/mL for total yeast and bacteria), had considerable production of phenolic compounds (190 GAE/100g). Color L* and a* did not highly changed and b* decreased during fermentation time. After 35 days of storage process, honey kefir beverage (HKB) maintained its chemical characteristics and microbial viability as required to be classified as a probiotic product. The models Ostwald-de Waele (R2 ? 0.98) and Herschel-Bulkley (R2 ? 0.99) can be used to predict the behavior of HKB. The isolates showed resistance to acid conditions (pH 2.0, 3.0, 4.0 and 7.0) and bile salts (0.3% and 0.6%), showing ability to survive in the presence of simulated gastric and intestinal juice and did not show hemolytic activity. All the isolates exhibited antagonistic activity against E. coli and S. aureus (up to 7.0 mm). The isolate L. satsumensis showed resistance against the studied pathogens and was the most powerful antagonistic isolates. Honey kefir beverage had high antagonistic activity (19.5 to 27.5 mm). L. satsumensis, L. mesenteroides and S. cerevisiae isolated from honey kefir beverage could be classified as potential probiotics. Kefir-based beverages have shown an alternative way to produce functional beverages with probiotic activities, especially for people with special needs (lactose intolerance) and vegan consumers. Honey could be an ideal alternative substrate for the production of functional cultured beverage, especially for vegans and lactose intolerant consumers. The parameters analyzed during HKB process can be considered for production of a novel beverage product, assisting in the industrialization of this bioprocess. In addition, the investigation of the potential probiotic features of these kefir strains should be useful for the development of novel functional beverage.
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Lieu, Kim Phuong. "Sediment diagenesis and characteristics of grains and pore geometry in sandstone reservoir rocks from a well of the North German Basin." Diss., Ludwig-Maximilians-Universität München, 2014. http://nbn-resolving.de/urn:nbn:de:bvb:19-165159.
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Roberts, Stacey Ann. "Effects of dietary corn distiller's dried grains with solubles on ammonia emission, production performance, manure characteristics, and economic efficiency for laying hens." [Ames, Iowa : Iowa State University], 2009. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&res_dat=xri:pqdiss&rft_dat=xri:pqdiss:3369883.
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Krieg, Jochen [Verfasser], and Markus [Akademischer Betreuer] Rodehutscord. "Ruminal degradation characteristics of barley, rye, and triticale grains assayed in situ and in vitro, and by near-infrared spectroscopy / Jochen Krieg ; Betreuer: Markus Rodehutscord." Hohenheim : Kommunikations-, Informations- und Medienzentrum der Universität Hohenheim, 2017. http://d-nb.info/114745115X/34.
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Weschenfelder, Simone. "Caracterização de kefir tradicional quanto à composição físico-química, sensorialidade e atividade anti-Escherichia-coli." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2009. http://hdl.handle.net/10183/16409.
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Kefir é um alimento fermentado resultante da dupla fermentação do leite pelos grãos de kefir, sendo estes grãos uma associação simbiótica de leveduras, bactérias ácido-láticas e bactérias ácido-acéticas. Do kefir pode-se obter o kefir leban e o soro de kefir, ambos resultantes da filtração do kefir em tecido de algodão esterilizado, por 24 horas, a 25ºC ± 2ºC. Este estudo tem por objetivos caracterizar e avaliar o comportamento de diferentes amostras de grãos de kefir tradicional e de derivados (kefir, kefir leban e soro de kefir) quanto às características físico-químicas, sensoriais, intenção de compra e atividade anti-Escherichia coli, quando inoculados em diferentes concentrações, padronizando-se o tipo de leite, o tempo e a temperatura de incubação, a maturação e a filtração. Foram desenvolvidas análises fisicoquímicas, a avaliação sensorial através do teste de aceitabilidade e preferência e a determinação de atividade anti-Escherichia coli. Os resultados demonstraram que a técnica de manipulação e padronização das amostras foi eficaz na obtenção de produtos com características idênticas, visto a reprodutibilidade dos resultados. Também indicam que o volume de leite utilizado na incubação influencia significativamente nas características do produto final. O kefir leban obtido do experimento apresentou consistência cremosa, semelhante ao queijo quark, aroma característico de laticínio fermentado, cor amarela esbranquiçada, sabor ácido e boa espalhabilidade. Manteve os teores de cálcio contidos no leite após o processamento, concentrou as proteínas e gorduras, além de não conter lactose. Apresentou boa aceitabilidade e 58% de intenção de compra, quando utilizado na elaboração de formulações alimentares tipo antepasto. O kefir e o soro de kefir apresentaram Intensidade de Atividade de Inibição Bacteriana/bacteriostasia e Intensidade de Atividade de Inativação Bacteriana/ bactericidia máximas frente ao inóculo bacteriano Escherichia coli (ATCC 11229), testado em concentrações <=108 UFC/mL.Kefir is a fermented food resulting from the double fermentation of milk by kefir grains, these grains are a symbiotic association of yeasts, acid-lactic and acetic-acid bacteria. From kefir can be obtained kefir leban and kefir whey, both from the filtration of kefir in sterile cotton cloth, during 24 hours at 25°C ± 2ºC. This study aims to characterize and evaluate the behavior of different samples of traditional kefir grains and products derived (kefir, kefir leban and kefir whey) on the physicochemical composition, sensorial characteristic, intent to buy and anti-Escherichia coli activity, when inoculated in different concentrations, standardized the type of milk, the time and temperature of incubation, the maturation and filtration processes. Were developed physical and chemical analysis, the sensory evaluation using the tests of acceptability and preference and determination of anti-Escherichia coli activity. The results showed that the technique of handling and standardizing of the samples was effective in providing products with similar characteristics as the reproductibility of results. It is also indicate that the volume of milk used in the incubation influence significantly the characteristics of the final product. The kefir leban obtained in the experiment showed creamy consistency, similar to quark cheese, characteristic aroma of fermented dairy, whitish yellow color, acid flavor and good spread. He maintained the calcium contained in milk after processing,he concentrated protein, and don't contain any lactose. The product showed good acceptability and 58% of purchase intention, when used in the preparation of food formulations such hors d'oeuvre. The kefir and the kefir whey showed maximal intensity of bacterial inhibition activity/bacteriostasys, and intensity of bacterial inactivation activity/bactericidie in front of inoculum of Escherichia coli (ATCC 11229), tested at concentrations <=108CFU/mL.
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Rueda, Pozo Silvia. "Social Inequalities in health among the elderly." Doctoral thesis, Universitat Pompeu Fabra, 2011. http://hdl.handle.net/10803/31877.
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Aquesta tesi analitza les desigualtats en salut entre les persones grans a través d’un marc
d’anàlisi on es combinen la posició socioeconòmica, el gènere, el desenvolupament
socioeconòmic regional i el suport social. Està formada per tres articles, cadascun d’ells
centrat en les diferents dimensions de les desigualtats socioeconòmiques en salut entre
les persones grans. Algunes de les troballes més importants han estat que les
desigualtats socioeconòmiques i de gènere persisteixen entre les persones grans; que les
dones presenten una pitjor salut que els homes; que l’impacte de les característiques
familiars en la salut de les persones grans varia per gènere i segons l’indicador de salut
analitzat; que el suport social constitueix un determinant important de l’estat de salut; i
que tot i que el grau de desenvolupament regional constitueix un determinant de l’estat
de salut, no està relacionat amb les desigualtats de gènere en salut.This dissertation analyses socio-economic inequalities in health among the elderly through a combined framework of socio-economic position, gender, regional socioeconomic development and social support. It is made up of three papers focusing on the different dimensions of socio-economic inequalities in health among the elderly. The most important findings are that socio-economic and gender inequalities in health persist in old age; that women present a poorer health status than men; that the impact of family characteristics on the health of older people differs by gender and the health indicator analysed; that social support constitutes an important determinant of health status; and that whereas regional socio-economic development constitutes a determinant of health status, it is not related to gender inequalities in health.
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Lieu, Kim Phuong [Verfasser], and Wolfgang [Akademischer Betreuer] Schmahl. "Sediment diagenesis and characteristics of grains and pore geometry in sandstone reservoir rocks from a well of the North German Basin / Kim Phuong Lieu. Betreuer: Wolfgang Schmahl." München : Universitätsbibliothek der Ludwig-Maximilians-Universität, 2014. http://d-nb.info/1047062402/34.
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