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Relevant bibliographies by topics / Till characterization

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Academic literature on the topic 'Till characterization'

Author: Grafiati

Published: 4 June 2021

Last updated: 1 February 2022

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Journal articles on the topic "Till characterization"

1

Ferris, David Milo, Greg Potter, and Grant Ferguson. "Characterization of the hydraulic conductivity of glacial till aquitards." Hydrogeology Journal 28, no. 5 (May 25, 2020): 1827–39. http://dx.doi.org/10.1007/s10040-020-02161-7.

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Lukas, William G., Don J. DeGroot, David W. Ostendorf, and Erich S. Hinlein. "Multi-scale hydrogeologic characterization of a leaky till–mantled fractured bedrock aquifer system." Canadian Geotechnical Journal 52, no. 12 (December 2015): 1945–55. http://dx.doi.org/10.1139/cgj-2014-0296.

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The paper presents hydrogeologic properties for a leaky till–mantled fractured bedrock aquifer system based on geophysical and hydraulic tests performed at a drumlin located in northeastern Massachusetts, USA. The site profile consists of a fractured bedrock aquifer overlain by a 30 m thick unweathered, coarse-grained till aquitard. Steady state, decadal scale, hydraulics varied little until seasonal irrigation pumping was initiated in recent years, causing a substantial annual drawdown in the aquifer and leakage from the overlying till. High frequency hydraulic head data sets collected in monitoring wells record the hydraulic response to the irrigation pumping. These data sets, together with results from small scale slug and purge tests performed in monitoring wells, are used to characterize the hydrogeologic behavior of this groundwater system. Geophysical logging performed in bedrock wells confirmed the presence of numerous flowing fractures. The large-scale continuum analysis of the fractured bedrock aquifer response to the irrigation pumping yields transmissivity values consistent with those determined from the small-scale, short-term purge test results. The low hydraulic conductivity till has a significant impact on the drawdown behavior of the fractured bedrock aquifer. Calibrated values from the collective data sets and analyses result in the following properties for the 30 m thick unweathered till: hydraulic conductivity K′ = 7.2 × 10−9 m/s, transmissivity T′ = 2.3 × 10−8 m2/s, and storativity S′ = 2.7 × 10−4, and for the underlying fractured bedrock aquifer: T = 6.5 × 10−6 m2/s with an average fracture aperture of 46 μm and hydraulic conductivity Kf = 1.3 × 10−3 m/s. These results should describe similar unweathered coarse-grained till–mantled fractured bedrock aquifer systems and provide useful data for preliminary analyses prior to any site-specific investigations.

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NAYEEM, ABDUL, K. YADAIAH, G. VAJRALINGAM, P. MAHESH, and M. NAGABHOOSHANAM. "STRUCTURAL CHARACTERIZATION OF CO-PRECIPITATED Cd1-xZnxS:Cu CRYSTALS." International Journal of Modern Physics B 16, no. 03 (January 30, 2002): 481–96. http://dx.doi.org/10.1142/s0217979202008099.

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Structural characterization of Cd 1-x Zn x S : Cu solid solutions were carried out with 0≤x≤1. XRD studies have revealed that the compounds are polycrystalline in nature having either Hexagonal (wurtzite) or Cubic (Zincblende) structure irrespective of their composition. Also the compounds have shown the most preferred reflections due to the plane [101] of CdS(H) and [111] of ZnS(C) in addition to other prominent reflections. The various structural parameters such as lattice constant, average internal stress, micro strain, dislocaion density, grain size, and preferred orientation were correlated with the composition. The lattice constant decreased linearly with the increase in Zn concentration. The sign of internal stress indicated elongational and compressional natures corresponding to hexagonal and cubic phases of CdS respectively. The variation of micro strain appeared to be conjugate when compared to grain size variation, and the variation of dislocation density with the composition showed a higher dislocation density till x=0.4 and then decreased till x=0.8 and then increased. The degree of preferred orientation in mixed Cd 1-x Zn x S : Cu crystals as observed by the maximum peak intensity of CdS(H) and ZnS(C) reflection showed that the degree of preferred orientation remained almost constant till x=0.6 and then increased. The results were explained on the basis of different phases of the compound and the defects related to Zn atoms.

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Sharma, Sathi, Arkabrata Gupta, Balaram Dey, M. Roy Chowdhury, A. Mandal, A. Bisoi, V. Nanal, L. C. Tribedi, and M. Saha Sarkar. "Characterization of an electrically cooled BEGe detector till Eγ∼7 MeV." Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment 964 (June 2020): 163810. http://dx.doi.org/10.1016/j.nima.2020.163810.

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Harrar, William G., Lawrence C. Murdoch, Bertel Nilsson, and Knud Erik S. Klint. "Field characterization of vertical bromide transport in a fractured glacial till." Hydrogeology Journal 15, no. 8 (June 1, 2007): 1473–88. http://dx.doi.org/10.1007/s10040-007-0198-5.

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Ronayne, Michael J., Tyler B. Houghton, and John D. Stednick. "Field characterization of hydraulic conductivity in a heterogeneous alpine glacial till." Journal of Hydrology 458-459 (August 2012): 103–9. http://dx.doi.org/10.1016/j.jhydrol.2012.06.036.

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Bancuta, Oana Roxana, Andrei Chilian, Iulian Bancuta, Radu Setnescu, Tanta Setnescu, and Rodica Mariana Ion. "Thermal Characterization of Resveratrol." Revista de Chimie 69, no. 6 (July 15, 2018): 1346–51. http://dx.doi.org/10.37358/rc.18.6.6322.

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In this paper was studied effect of temperature on the trans-resveratrol till to total degradation by UV-Vis spectrophotometry and FT-IR spectroscopy. Using statistical methods, it was observed that trans-resveratrol is unstable to higher temperatures than 100 �C, even in the absence of light. However, at temperatures up to 70 � C, resveratrol was found to be enough stable for time periods as short as 30 min. Pearson correlations of absorbance values at 304 nm (characteristic for trans-resveratrol) and 286 nm (characteristic for cis-resveratrol) shown that no conversion of trans-resveratrol to cis resveratrol is produced at elevated experimental temperatures.

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Christiansen, Camilla Maymann, Charlotte Riis, Stine B. Christensen, Mette M. Broholm, Anders G. Christensen, Knud Erik S. Klint, Judith S. A. Wood, Peter Bauer-Gottwein, and Poul L. Bjerg. "Characterization and Quantification of Pneumatic Fracturing Effects at a Clay Till Site." Environmental Science & Technology 42, no. 2 (January 2008): 570–76. http://dx.doi.org/10.1021/es071294s.

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Oviatt, N. M., S. A. Gleeson, R. C. Paulen, M. B. McClenaghan, and S. Paradis. "Characterization and dispersal of indicator minerals associated with the Pine Point Mississippi Valley-type (MVT) district, Northwest Territories, Canada." Canadian Journal of Earth Sciences 52, no. 9 (September 2015): 776–94. http://dx.doi.org/10.1139/cjes-2014-0108.

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A glacial dispersal study was conducted around a subcropping Pb–Zn deposit (O28) in the Pine Point Mississippi Valley-type (MVT) district, Northwest Territories, Canada, with the intent of characterizing and documenting the indicator minerals and their dispersal from a known orebody. Mapping of striations adjacent to deposit O28, and throughout the Pine Point district, along with observed glacial stratigraphy, indicate that there are three phases of ice flow that have affected the Pine Point district. Sphalerite, galena, and pyrite were identified in mineralized bedrock samples at deposit O28, and sphalerite and galena were recovered from the sand fraction of till samples up to 500 m from the mineralized subcrop. The majority of sphalerite and galena grains recovered from till samples down-ice of deposit O28 were 0.25–0.5 mm in size. Size and morphology of sphalerite grains in till demonstrate relative proximity to their bedrock source, with the largest and more angular grains being closer to the ore zone (<50 m) whereas smaller and more rounded grains occur further down-ice (∼250 m). The paragenesis, textures, major-element concentrations, and S and Pb isotopic compositions of bedrock samples from deposit O28 and from newly drilled core from four other deposits were characterized. Concentrations of Zn in bedrock sphalerite grains range from 43.95 to 67.48 wt.%, concentrations of S range from 32.03 to 34.01 wt.%, and concentrations of Fe range from 0.02 to 16.94 wt.%. The Fe concentration in bedrock sphalerite decreases from east to west across the district. Concentrations of S in galena grains in bedrock range from 12.50 to 14.00 wt.% and have a bimodal distribution. Generally, the geochemistry of sphalerite grains recovered from till were statistically similar to bedrock grains recovered from deposits O28 and L65. Major-element concentrations were statistically the same between the sphalerite grains recovered from till and the honey-brown and cleiophane varieties in the bedrock samples. Galena grains recovered from till samples were similar to the cubic and fracture-fill varieties of grains recovered from bedrock in the R190 and M67 deposits. Sulphur isotopic values for sphalerite grains from bedrock range from 20.6‰ to 24.2‰, while those from till samples range from −5.3‰ to 24.4‰. Lead isotopic ratios for galena grains from bedrock and till samples had very little variation, which is a characteristic of the Pine Point district. The S and Pb isotopic studies as well as major-element geochemistry suggest that indicator minerals derived from Pine Point-type mineralization can be distinguished from those sourced from other types of carbonate-hosted mineralized systems (e.g., Cordilleran zinc–lead deposits) and that the methods here can be used as exploration tools for identifying MVT deposit provenance or potential. The results of this study present criteria and highlights additional methods for exploration of MVT deposits in glaciated terrain.

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Przulj, Novo, and Vojislava Momcilovic. "Characterization of vegetative and grain filling periods of winter wheat by stepwise regression procedure: I. Vegetative period." Genetika 43, no. 2 (2011): 349–59. http://dx.doi.org/10.2298/gensr1102349p.

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Modeling plant growth by mathematical functions is important for understanding plant development and growth. Most of the models of dry matter accumulation in small cereals simulated the period of grain filling while small attention has been devoted to mathematical simulation of vegetative period till anthesis. The aim of this research was to determine the most appropriate polynomial non-linear regression for dry matter accumulation till anthesis in winter wheat. Pobeda, a medium early variety, was used as model genotype for this research. A 5-year field data were analyzed by the forward procedure of stepwise regression. Although the procedure requires the maximum power of the polynomial regression to be used, we suggest using a lower power since it is easier for understanding and explanation and it is taking into account literature sources and biological laws. It can be accepted that quadratic regression model appropriately fits the process of dry matter accumulation till anthesis in winter wheat.

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Dissertations / Theses on the topic "Till characterization"

1

Prvanovic, Aleksandar. "Influence of Soil Joints on Permeability of Glacial Till." Kent State University / OhioLINK, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=kent1428615878.

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Larsson, Anna. "Karaktärisering av morän i Aitikgruvan för användning vid efterbehandling av gråberg." Thesis, Umeå universitet, Institutionen för ekologi, miljö och geovetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-153685.

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The Aitik Mine is the largest copper mine in Europe and every year, 15 – 20 Mt waste rock is deposited in dumps located close to the mine. This waste rock can contain sulfides, which if exposed to oxygen can cause leeching and formation of acid rock drainage. To prevent this from happening, Boliden has designed a dry cover system to prevent leaching from occurring. The purpose of this study was to characterize existing stockpiles of till at Boliden’s Aitik Mine site in the context of requirements for the closure cover system. The till was evaluated primarily of its suitability for use in a highly compacted layer (HCL), since Boliden has a cover system design that has to provide the necessary control on oxygen diffusion rates to underlying waste rock material over the long term. The sampling took place on three of the stockpiles and a total of 31 test pits were excavated. A total of 27 samples of soil were collected and analyzed for particle size distribution (PSD) testing. Following review of PSD results, select samples were tested for hydraulic conductivity and compaction testing. The PSD results showed that all materials were fine-grained sand with some gravel, cobbles and silt. Results also show the amount of clay particles (0,004 mm) were relatively low across the three stockpiles. The result for the hydraulic conductivity were higher than Boliden’s prescriptive criteria. The results indicate that the sampled till would require addition of sodium bentonite to be able to construct a HCL with a hydraulic conductivity not exceeding Boliden’s criteria.

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Collins, Alyssa A. "Characterization of disease reduction by cover crops in a no-till pumpkin production system." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file 0.46 Mb., p, 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:3220741.

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Steward, Genevieve Christine. "Diffuse reflectance spectroscopy for the characterization of calcareous glacial till soils from North Central Montana." Thesis, Montana State University, 2006. http://etd.lib.montana.edu/etd/2006/steward/StewardG1206.pdf.

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Diffuse reflective spectroscopy (DRS) is a method of soil carbon (C) quantification. In this study, the Vis-NIR (350-2500 nm) and MIR (2500-25000 nm) regions were evaluated to determine respective predictive accuracies of soil organic and inorganic carbon (SOC and SIC, respectively). The dataset included 315 soil samples of glacial till origin, obtained from six independent farm sites within the Golden Triangle region of Montana, with depths ranging from 0-100 cm. For Vis-NIR analysis, Local vs. Regional vs. Global calibration sets were compared by six-fold cross validation by site of C predictions developed by Partial Least Squares (PLS) regression and Boosted Regression Trees (BRT). First derivative spectral data was used along with four preparation methods: (i) field moist and (ii) dry cores, (iii) 2-mm sieved ("Sieved") and (iv) milled samples (<200-Âµm, "Milled") were used to evaluate the potential application to in-situ analysis. The most accurate SOC predictions were from Milled samples using a Local calibration set. SOC predictions were a result of SOM electronic absorptions within the visible region. The most accurate SIC predictions were from Sieved samples with a Local calibration set. Within the MIR analysis, spectral transformations, KBr dilution and Regional vs. Local calibrations were evaluated using the same independent validation procedure of PLS calibrations. Spectral transformations included: absorbance (AB), first derivative (D) and Kubelka-Munk (KM) from samples prepared both with and without KBr dilution. The most accurate SOC predictions were obtained from models developed with the D transformation of Local spectral data. SOC predictions were a result of SOM, clay and carbonate absorptions. The most accurate SIC prediction was from the KM transformation of Local spectral data. KBr diluted samples gave comparable regional predictive accuracy to neat samples. Specular reflection was found in neat sample spectral signatures; with Local core addition, neat samples built more accurate prediction models despite these distortions. In the end, it was determined that the MIR region provides more accurate predictions of soil C for calcareous glacial till soils of north central Montana. But, the Vis-NIR region presents an accurate method while existing as the less expensive and more efficient route.

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Malmström, Martin. "Tillbaka till texten : derivativt skrivande i en svensk gymnasieklass." Licentiate thesis, Malmö högskola, Institutionen för kultur, språk och medier (KSM), 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:mau:diva-7622.

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This licentiate thesis investigates fiction writing and reading in up- per secondary school in Sweden. Inspired by fanfiction I created a teaching project of derivative writing in which the students in a se- cond-year social science class wrote short stories derived from 20th century novels. They also gave peer response, both orally and in writing. Finally they wrote a reflective text about the project. The main purpose of the study is to describe and analyse the teaching project. The primary material is the students’ short sto- ries. Drawing from theories of intertextuality, most notably Genette’s transtextuality theory and fanfiction theories, I analyse how the students make use of the source text. Theories of narratology have been used to analyse techniques of storytelling, mainly characterization and focalization. In the analysis of the stu- dents’ written comments on each other’s texts I draw from re- sponse theories. The results show that the students tend to stay close to the source texts. The most common subgenre is refocalization, that is to change the perspective to one of the secondary characters’ view. Refocalization seems to be an efficient way of deepening the under- standing of the main character of the source text; in many of the students’ stories the protagonist functions as the focalized object. Which novel the students read plays an important part in how fo- calization is expressed, however. Short stories based on novels with complex focalization tend to be focalized in a variety of ways whereas stories based on novels with fixed focalization mostly fol- low the pattern of the source text. Reading the short stories and, not least, the reflective texts it becomes evident that the characters are extremely important in this kind of literature, more so than semiotic theories of characters have acknowledged; the characters are more than merely functions. In the chapter about peer response I argue that many students write analyses of the text they are about to respond to rather than give advice about how to proceed. It is difficult to see if the response is of any help to the writer. Thus, I question whether peer response has any other effect than strength- ening the social bonds between the group members. The study shows that creative writing could very well be an in- tegral part of the education in Swedish in upper secondary school. Derivative writing may function as an alternative to traditional lit- erary analyses. Refocalizing is a way of seeing the story from a dif- ferent viewpoint, which could enhance the students’ sense of empa- thy. Questions of focalization might also lead to discussions of power. Furthermore, creative writing may make the students more attentive as writers. In the new syllabus Gy 11, however, the op- portunities for working with creative writing are, unfortunately, limited.

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Wallrabenstein, Till [Verfasser]. "Clinical characterization and prognostic impact of SF3B1 and TP53 gene mutations in myelodysplastic syndromes / Till Wallrabenstein." Ulm : Universität Ulm, 2018. http://d-nb.info/1172351635/34.

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Lesker, Till Robin [Verfasser]. "Molecular characterization of clover and dill infecting cryptic viruses : detection, protein interactions and evolutionary relationships / Till Robin Lesker." Hannover : Technische Informationsbibliothek und Universitätsbibliothek Hannover (TIB), 2014. http://d-nb.info/1063981751/34.

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Lesker, Till [Verfasser]. "Molecular characterization of clover and dill infecting cryptic viruses : detection, protein interactions and evolutionary relationships / Till Robin Lesker." Hannover : Technische Informationsbibliothek und Universitätsbibliothek Hannover (TIB), 2014. http://nbn-resolving.de/urn:nbn:de:gbv:089-7884270243.

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Bruhn, Cecilia. "Production and Characterization of Scintillating CaWO$_4$ Single Crystals for Rare Event Searches CaWO$_4$ är latex kodning för att få till den kemiska formeln." Thesis, KTH, Fysik, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-168012.

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Dai, Shao-Bo [Verfasser], Kai [Akademischer Betreuer] Tittmann, Ralf [Gutachter] Ficner, and Till [Gutachter] Ischebeck. "Mechanistic and Structural Characterization of Thiamine Diphosphate Dependent Enzyme Transketolases from Human and E.coli / Shao-Bo Dai ; Gutachter: Ralf Ficner, Till Ischebeck ; Betreuer: Kai Tittmann." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2018. http://d-nb.info/1160753520/34.

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Books on the topic "Till characterization"

1

Center, Langley Research, ed. High temperature electromagnetic characterization of thermal protection system tile materials. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1993.

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Center, Langley Research, ed. High temperature electromagnetic characterization of thermal protection system tile materials. Hampton, Va: National Aeronautics and Space Administration, Langley Research Center, 1993.

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Wahrhaftig, Alexandre de Macêdo. La portada del corregidor. Brazil Publishing, 2020. http://dx.doi.org/10.31012/978-65-5861-060-1.

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This is a preliminary examination related to a portal faced of a public building in the city of La Laguna, Tenerife, Spain, carved in the mid-sixteenth century, of rich lines and architectural symbols characteristic of the Renaissance early stage. It was set up in ashlars, of chemical composition and granulometry that gave to it the classification of toba basaltic volcanic, compact granular, reddish in colour. Its high chemical resistance was not able to withstand the 450 years of exposure and at the time of diagnosis its surface had a high degree of dirt adhered and a profound loss of material by disaggregation and breakdowns, what had partially destroyed valuable elements of its characterization. This preliminary investigation fell exclusively on the stone material that composed the faced, although could be observed other elements like roof tile in the ceiling, and carpentry on the window and door. For that reason, the focus of this work has been directed to the stylistic symbolism and diagnose of the main element, being restricted to the stonework, where was the essence of the centennial facade. Therefore, this previous analysis was performed objecting to prepare the base for a restoration work considering the archaeological line of thought, in order to retrieve and maintain its forms and volumes, working on fundamental architectural elements to rescue and ensure to future generations the true message that was exteriorized.

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Book chapters on the topic "Till characterization"

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Senkov, O. N., and F. H. Froes. "Synthesis and Characterization of Nanocrystalline Tial Based Alloys." In Investigations and Applications of Severe Plastic Deformation, 43–48. Dordrecht: Springer Netherlands, 2000. http://dx.doi.org/10.1007/978-94-011-4062-1_6.

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Zheng, Xiu Hua, Bilal Dogan, and Karl Heinz Bohm. "Microstructural and Mechanical Characterization of TiAl/Ti6242 Diffusion Bonds." In Materials Science Forum, 1393–400. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-432-4.1393.

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Tochigi, E., Naoya Shibata, Atsutomo Nakamura, Takahisa Yamamoto, and Yuichi Ikuhara. "TEM Characterization of 2º Tilt Grain Boundary in Alumina." In Materials Science Forum, 2427–30. Stafa: Trans Tech Publications Ltd., 2007. http://dx.doi.org/10.4028/0-87849-462-6.2427.

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A., Juan Hernández, Eleazar Salinas R, Francisco Patiño C, Isauro Rivera L, Javier Flores B, Norma Trápala P, Miguel Pérez L., et al. "Tile Production Using Wastes from Mining Industry of the Mining District Pachuca and Real Del Monte." In Characterization of Minerals, Metals, and Materials, 201–9. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2012. http://dx.doi.org/10.1002/9781118371305.ch25.

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Hirano, K. "Fracture Mechanics Characterization of Intermetallic TiAl Compounds at High Temperatures." In Fracture of Engineering Materials and Structures, 679–84. Dordrecht: Springer Netherlands, 1991. http://dx.doi.org/10.1007/978-94-011-3650-1_100.

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Liu, Dage, John H. Reif, and Thomas H. La Bean. "DNA Nanotubes: Construction and Characterization of Filaments Composed of TX-tile Lattice." In DNA Computing, 10–21. Berlin, Heidelberg: Springer Berlin Heidelberg, 2003. http://dx.doi.org/10.1007/3-540-36440-4_2.

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Préauchat, B., F. Popoff, and M. Thomas. "Characterization of a Pre-Alloyed TiAl Powder after Densification by HIP and Extrusion." In Materials Development and Processing - Bulk Amorphous Materials, Undercooling and Powder Metallurgy, 292–97. Weinheim, FRG: Wiley-VCH Verlag GmbH & Co. KGaA, 2006. http://dx.doi.org/10.1002/3527607277.ch47.

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Carani, G., G. Timellini, C. Palmonari, and A. Tenaglia. "Abrasion Resistance of Glazed Tile: Characterization of the Quality and Prediction of Performance in Working Conditions." In Materials & Equipment/Whitewares: Ceramic Engineering and Science Proceedings, Volume 12, Issue 1/2, 369–81. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2008. http://dx.doi.org/10.1002/9780470313183.ch39.

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Wang, Yao, Dong Wang, Gong Zhang, Langhong Lou, Jian Zhang, and Jian Zhang. "Characterization of Tilt and Twist Low Angle Grain Boundaries and Their Effects on Intermediate-Temperature Creep Deformation Behaviour." In Superalloys 2016, 757–62. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2016. http://dx.doi.org/10.1002/9781119075646.ch81.

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Lather, Viney, Neelam Poonia, and Deepti Pandita. "Mesoporous Silica Nanoparticles." In Research Anthology on Synthesis, Characterization, and Applications of Nanomaterials, 458–513. IGI Global, 2021. http://dx.doi.org/10.4018/978-1-7998-8591-7.ch022.

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Integration of nanotechnology and biomedicine has offered great opportunities for the development of nanoscaled therapeutic platforms. Amongst various nanocarriers, mesoporous silica nanoparticles (MSNs) is one of the most developed and promising inorganic materials-based drug delivery system for clinical translations due to their simple composition and nanoporous structure. MSNs possess unique structural features, for example, well-defined morphology, large surface areas, uniform size, controllable structure, flexible pore volume, tunable pore sizes, extraordinarily high loading efficiency, and excellent biocompatibility. Progress in structure control and functionalization may endow MSNs with functionalities that enable medical applications of these integrated nanoparticles such as molecularly targeted drug delivery, multicomponent synergistic therapy, in vivo imaging and therapeutic capability, on-demand/stimuli-responsive drug release, etc. In this chapter, the authors overview MSNs' characteristics and the scientific efforts developed till date involving drug delivery and biomedical applications.

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Conference papers on the topic "Till characterization"

1

Balfe, M. H., L. G. Baise, and L. Edgers. "Three-Dimensional Characterization and Visualization of Till in Boston, Massachusetts." In Geo-Frontiers Congress 2005. Reston, VA: American Society of Civil Engineers, 2005. http://dx.doi.org/10.1061/40785(164)44.

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J. Steensma, Gilein, Paul D. Bauman, Ian Dyck, and Matthew Brassard. "Seismic And Resistivity Tomography Characterization Of A Till-Shale Bedrock Interface." In 15th EEGS Symposium on the Application of Geophysics to Engineering and Environmental Problems. European Association of Geoscientists & Engineers, 2002. http://dx.doi.org/10.3997/2214-4609-pdb.191.p19.

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Steensma, Gilein J., Paul D. Bauman, Ian Dyck, and Matthew Brassard. "Seismic and Resistivity Tomography Characterization of a Till‐Shale Bedrock Interface." In Symposium on the Application of Geophysics to Engineering and Environmental Problems 2002. Environment and Engineering Geophysical Society, 2002. http://dx.doi.org/10.4133/1.2927157.

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Tripathy, S., and E. J. Berger. "Material Property Characterization of Costal Cartilage Using AFM Indentation." In ASME 2009 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2009. http://dx.doi.org/10.1115/detc2009-87462.

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Costal cartilage is one of the load bearing tissues of the rib cage. Literature on the material characterization of the costal cartilage is limited. Atomic force microscopy has been extremely successful in characterizing the elastic properties of articular cartilage, but no studies have been published on costal cartilage. In this study AFM indentations on human costal cartilage were performed and compared with macro scale indentation data. Spherical beaded tips of three sizes were used for the AFM indentations. The Hertz contact model for spherical indenter was used to analyze the data and obtain the Young’s modulus. The costal cartilage was found to be almost linearly elastic till 600 nm of indentation depth. It was also found that the modulus values decreased with the distance from the junction. The modulus values from macro indentations were found to be 2-fold larger than the AFM indentation modulus.

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Mondal, Sirshendu, Achintya Mukhopadhyay, and Swarnendu Sen. "Dynamic Characterization of a Laboratory-Scale Thermal Pulse Combustor." In ASME Turbo Expo 2012: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/gt2012-69273.

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Pulse combustors are widely applied for heating, drying and even propulsion applications because of their higher efficiency, higher heat transfer rates and lower emission than steady combustors. However, fundamentals of this pulse combustor remain till date largely unexplored. Experiments are conducted on a laboratory-scale thermal pulse combustor. The set-up consists of an upstream section, the combustor and the tailpipe. The optical signal from the flame is measured with a photomultiplier tube and pressure fluctuations are measured using a dynamic pressure transducer. The time series data reconstructed with SSA (Singular Spectrum Analysis) reveals that at a given air flow rate as the fuel flow rate is reduced, three distinct regimes are observed: strongly pulsating, weakly pulsating and non-pulsating. Nonlinear analysis suggests the existence of quasiperiodic orbits for the pulsating cases. The phase difference between pressure and heat release rate fluctuations confirm sustained instability for the pulsating cases. The characteristic frequency is found to decrease with decrease in fuel flow rate and increase in tailpipe length for a given air flow rate. Different orientation of fuel inlet has been implemented to achieve pulsating combustion under lean fuel conditions.

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Sundaresan, Vishnu Baba, and Donald J. Leo. "Modeling and Characterization of a Chemomechanical Actuator Based on Protein Transporters." In ASME 2007 International Mechanical Engineering Congress and Exposition. ASMEDC, 2007. http://dx.doi.org/10.1115/imece2007-43712.

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Plants and animal cells are naturally occurring actuators that exhibit force and motion driven by fluid transport through the cell membrane. The protein transporters embedded in the cell membrane serve as the selective gateway for ion and fluid transport. The actuator presented in this work generates force and deformation from mass transport through an artificial membrane with protein transporters extracted from plant cell membranes. The artificial membrane is formed from purified 1-Palmitoyl-2-Oleoyl-sn-Glycero-3-[Phospho-L-Serine] (Sodium Salt) (POPS), 1-Palmitoyl-2-Oleoyl-sn-Glycero-3-Phosphoethanolamine (POPE) lipids and supported on a porous substrate. The protein transporter used in the actuator membrane is a proton-sucrose cotransporter, SUT4, extracted from yeast cells that genetically modified to grow the cotransporter in their cell membranes. The SUT4 transporter conducts proton and sucrose from the side of the membrane with higher concentration and carries water molecules across the membrane. It is observed from transport characterization experiments that fluid flux through the membrane varies with the applied sucrose concentration and hence is chosen as the control stimulus in the actuator. A modified four-state facilitated diffusion model is applied to the transport characterization data to compute the two characteristic parameters for fluid transport, saturation concentration and translocation rate, through the membrane. The flux rate through the membrane is observed to increase with the concentration till a particular value and saturates at a higher concentration. The concentration at which the flux rate through the membrane saturates is referred to as the saturation concentration. The saturation concentration for the actuator is experimentally found to be 6±0.6mM sucrose on the side with lower pH. The corresponding maximum translocation rate is found to be 9.6±1.2 nl/μ.cm2.min. The maximum steady state deformation produced by the actuator is observed at 30 mM sucrose that corresponds to a force of 0.89 mN.

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Finkelstein, David B., Jason Constantino, Breezy Swete, Harry Simbliaris, and Jesse Schaffer. "INSIGHTS INTO THE EARLY CHEMICAL EVOLUTION OF LAKES IN TERRAINS DOMINATED BY UNCONSOLIDATED SEDIMENTS: GEOCHEMICAL CHARACTERIZATION OF TILL-HOSTED SURFACE WATERS IN WESTERN NY." In GSA Annual Meeting in Denver, Colorado, USA - 2016. Geological Society of America, 2016. http://dx.doi.org/10.1130/abs/2016am-287713.

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8

Renuke, Avinash, Federico Reggio, Paolo Silvestri, Alberto Traverso, and Matteo Pascenti. "Experimental Investigation on a 3 kW Air Tesla Expander With High Speed Generator." In ASME Turbo Expo 2020: Turbomachinery Technical Conference and Exposition. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/gt2020-14572.

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Abstract Tesla bladeless turbomachines are recently being investigated due to many advantages such as its simple design and ease of manufacturing. If an efficient design is achieved, this will be a promising machine in the area of small-scale power generation and energy harvesting. This paper focuses on the experimental performance investigation of 3 kW (rated power) Tesla bladeless expander. The Tesla expander and electric generator are housed in a single casing making it first of its kind being tested with such configuration. The expander is fed with air and operated at high rotational speeds up to 40000 rpm. The test is carried out with different number of nozzles to understand its effect on the performance. Results show that the peak efficiency for two nozzles is better than one nozzle and four nozzle configurations for the same inlet pressure conditions. Experimental tests revealed that this turbine is most efficient Tesla turbine till now with air as a working fluid. Furthermore, one of the most important losses in Tesla turbomachines, nozzle loss, is experimentally characterized. Specific vibrational tests were carried out to obtain complete machine dynamical characterization. The vibrational response characterization of the turbine enabled us to recognize a disk mode family solicited by the air flow and to perform a proper machine maintenance and balancing aiming to reduce the energy of its operational vibration.

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Monti, Paolo, Caterina Molinari, Massimiliano Bocciarelli, Alberto Corigliano, and Stefano Mariani. "Structural Integrity Assessment of a Pipeline Subjected to an Underwater Explosion." In ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2011. http://dx.doi.org/10.1115/omae2011-49178.

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Several trunklines cross either areas which in the recent past were war theatre or dumping areas used for burying weapons after the last war. The presence of unexploded mines, bombs or torpedoes on the seabed constitutes a potential hazard for the structural integrity of submarine pipelines. Before laying, it is therefore necessary to remove the unexploded charges within a corridor including the route. Risk still remains during the pipeline life, since annual surveys can show evidences of unexploded mines or torpedoes dragged by fishing gears till the protruding pipeline. Consequently, the structural integrity assessment of a submarine pipeline subjected to underwater explosions is of the utmost importance. The aforementioned assessment involves several aspects: the characterization of shock wave and gas bubble pulsation in water; the definition of loading conditions on the pipeline; the characterisation of the strain-rate properties of the steel; the local and global structural analysis; the pipe verification criteria. Aim of this study is to describe how the aforementioned aspects can be managed. Analytical and numerical approaches concerning the assessment of the structural response of the pipeline are presented, and criteria for Serviceability and Accidental Limit States are proposed.

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Ghenaiet, Adel, and Mahfoudh Cerdoune. "Simulations of Steady and Unsteady Flows Through a Twin-Entry Radial Turbine." In ASME Turbo Expo 2014: Turbine Technical Conference and Exposition. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/gt2014-25764.

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Radial inflow turbines have established their place in small power units and turbochargers which usually operate under highly unsteady gas flows. The present numerical study is an aerodynamic characterization of the steady and unsteady gas flows through the components of a twin-entry radial turbine with an asymmetrical volute, with an insight on the volute/rotor interactions and the effects of pulsatile flow. The details of the flow structures were possible to obtain by considering the full rotor blades simulations. Examination of the both sides of volute has revealed much more energy conversion with respect to the shroud side and the tongue influence is clearly depicted by a low momentum due to mixing till a tangential position. The rotor flow is characterized by intense secondary flows provoking migration of low energy fluid from hub to shroud and interacting with tip leakage flow. Spectral analysis of the pressure fluctuations recorded at different interfaces has revealed high unsteadiness which may be characterized by a space-time periodic behaviour and described by a double Fourier decomposition. This has led to the determination of different pressure fluctuation frequencies arising during the turbine working time and prevailing modes and their originating sources.

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Reports on the topic "Till characterization"

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Sharpe, D. R., H. A. J. Russell, and C. Logan. Geological characterization of a regional aquitard: Newmarket Till, Oak Ridges Moraine area, southern Ontario. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2002. http://dx.doi.org/10.4095/216708.

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Stepner, D. A. J., B A Kjarsgaard, R. A. Knight, H. A. J. Russell, and D. R. Sharpe. A chemostratigraphic characterization of Newmarket Till in drill core from north of Lake Ontario. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 2020. http://dx.doi.org/10.4095/321097.

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Oneschuk, D., and G. Kilfoil. Tilt angle of the magnetic field, characterization of a highly prospective fault system with airborne geophysics data, west-central Newfoundland, Newfoundland and Labrador, NTS 12-A and parts of NTS 1-M, 2-D, 11-O, P and 12-B. Natural Resources Canada/CMSS/Information Management, 2021. http://dx.doi.org/10.4095/328204.

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