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Artykuły w czasopismach na temat "Effect of temperature on weeds"

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Monks, C. Dale, David W. Monks, Tom Basden, Arthur Selders, Suzanne Poland, and Edward Rayburn. "Soil Temperature, Soil Moisture, Weed Control, and Tomato (Lycopersicon esculentum) Response to Mulching." Weed Technology 11, no. 3 (September 1997): 561–66. http://dx.doi.org/10.1017/s0890037x00045425.

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Shredded newspaper (2.5, 7.6, 12.7, and 17.8 cm depth), chopped newspaper (2.5 and 7.6 cm), wheat straw (15.2 cm), black plastic, and plastic landscape fabric were evaluated during 1993 and 1994 in West Virginia for their effect on soil temperature, soil moisture, weed control, and yield in tomato. Shredded newspaper and wheat straw applied at 0, 2, 4, or 6 weeks after transplanting (WAT) and napropamide (2.1 kg ai/ha) plus metribuzin (0.28 kg ai/ha) applied at transplanting were evaluated during 1992 and 1993 in North Carolina for effect on weed control and tomato yield. Results from West Vir
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Aziz, Fahrurrozi, and Katrine A. Stewart. "EFFECT OF SPECTRAL QUALITIES OF PLASTIC MULCH ON WEED DEVELOPMENT AND GROWTH." HortScience 29, no. 4 (April 1994): 251c—251. http://dx.doi.org/10.21273/hortsci.29.4.251c.

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The types of plastic mulch used in horticultural production often fulfill only a few of the grower's needs. Black plastic mulch controls weeds, but can burn young plants. Clear mulch, while warming the soil and enhancing early crop growth, allows prolific weed growth and development. Accordingly, an experiment using a randomized complete-block design with-four replications was set up to compare the effects of black, microperforated black, silver, and wavelength-selective (IRT-76) green mulches, and bare soil on weed growth and development, and on soil temperature and moisture. Each mulch was e
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Kumar, Vipin, Annu Kumari, Andrew J. Price, Ram Swaroop Bana, Vijay Singh, and Shanti Devi Bamboriya. "Impact of Futuristic Climate Variables on Weed Biology and Herbicidal Efficacy: A Review." Agronomy 13, no. 2 (February 15, 2023): 559. http://dx.doi.org/10.3390/agronomy13020559.

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Our changing climate will likely have serious implications on agriculture production through its effects on food and feed crop yield and quality, forage and livestock production, and pest dynamics, including troublesome weed control. With regards to weeds, climatic variables control many plant physiology functions that impact flowering, fruiting, and seed dormancy; therefore, an altered climate can result in a weed species composition shift within agro-ecosystems. Weed species will likely adapt to a changing climate due to their high phenotypic plasticity and vast genetic diversity. Higher tem
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Wright, Shawn R., Harold D. Coble, C. David Raper, and Thomas W. Rufty. "Comparative responses of soybean (Glycine max), sicklepod (Senna obtusifolia), and Palmer amaranth (Amaranthus palmeri) to root zone and aerial temperatures." Weed Science 47, no. 2 (April 1999): 167–74. http://dx.doi.org/10.1017/s004317450009158x.

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Experiments were conducted to compare germination efficiencies and vegetative growth of soybean and the competing weed species, sicklepod and Palmer amaranth, over a range of temperatures in the root zone and aerial environments. From genetic origins we hypothesized that the weeds would have a higher temperature optimum, which would help explain competitive interactions seen in the southeastern U.S. Germination experiments indicated that germination efficiency of the weeds was much more sensitive to low temperature than soybean, being markedly inhibited below 18 C. Similarly, experiments in an
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Park, Hyun-Hwa, Do-Jin Lee, and Yong-In Kuk. "Effects of Various Environmental Conditions on the Growth of Amaranthus patulus Bertol. and Changes of Herbicide Efficacy Caused by Increasing Temperatures." Agronomy 11, no. 9 (September 3, 2021): 1773. http://dx.doi.org/10.3390/agronomy11091773.

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Understanding the effects of climate change on weed growth and herbicide activity is important for optimizing herbicide applications for effective weed control in the future. Therefore, this study examined how climate change affects the growth of Amaranthus patulus and the efficacy of soil and foliar herbicides at different temperatures. Although the control values for A. patulus differed between herbicides and temperature, the control values increased with increasing time after the herbicide treatments. Under growth conditions in which the temperature remained constant, the efficacy of soil-a
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Kirigiah, Richard, Masinde Peter, and Mworia G. Erick. "Effect of Plastic Mulch Color and Transplanting Stage on Baby Corn Plant Performance." European Journal of Agriculture and Food Sciences 4, no. 5 (October 20, 2022): 103–11. http://dx.doi.org/10.24018/ejfood.2022.4.5.567.

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Different colored plastic mulches have been developed and used in various crop production methods. The main goals of using colored plastic mulches are to modify the radiation budget and reduce soil water loss. In addition, it aids in controlling weed and insect infestation as well as soil temperature, water use effectiveness, plant development, yield, and quality. The growth and development of baby corn depend on several geographical and climatic conditions in its surrounding (air and soil). This study determined the effect of different colored plastic mulches on soil temperature and the perfo
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Tremmel, D. C., and D. T. Patterson. "Effects of elevated CO2 and temperature on development in soybean and five weeds." Canadian Journal of Plant Science 74, no. 1 (January 1, 1994): 43–50. http://dx.doi.org/10.4141/cjps94-009.

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Developmental rates of soybean [Glycine max (L.) Merr. 'Braxton'], johnsongrass [Sorghum halepense (L.) Pers.], quackgrass [Elytrigia repens (L.) Nevski], redroot pigweed (Amaranthus retroflexus L.), sicklepod (Cassia obtusifolia L.), and velvetleaf (Abutilon theophrasti Medic.) were compared among plants grown in all combinations of two temperature levels (avg. day/night of 26/19 °C and 30/23 °C) and two CO2 levels (350 and 700 ppm). Neither temperature nor CO2 affected johnsongrass tillering rate, but plants began tillering earlier at higher temperatures. Adverse effects of higher temperatur
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Martinez-Ghersa, Maria A., Emilio H. Satorre, and Claudio M. Ghersa. "Effect of soil water content and temperature on dormancy breaking and germination of three weeds." Weed Science 45, no. 6 (December 1997): 791–97. http://dx.doi.org/10.1017/s0043174500088986.

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In laboratory experiments, we studied barnyardgrass, common lambsquarters, and redroot pigweed seed dormancy release by alternating temperatures under different soil water regimes, to determine whether that response serves as a mechanism for assuring seedling establishment. Alternating temperatures were important in breaking seed dormancy in the three weeds, but the species' response to alternating temperatures differed with soil water content. For redroot pigweed and newly dispersed seeds of barnyardgrass, dormancy breaking by alternating temperatures occurred only when soil water content was
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Swanton, Clarence J., Jian Zhong Huang, William Deen, Matthijs Tollenaar, Anil Shrestha, and Hamid Rahimian. "Effects of temperature and photoperiod onSetaria viridis." Weed Science 47, no. 4 (August 1999): 446–53. http://dx.doi.org/10.1017/s0043174500092067.

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Understanding the environmental variables influencing the phenological development of weeds is essential for simulation model development. Temperature and photoperiod are important variables governing the phenological development of weeds. Growth cabinet studies were conducted to characterize the phenological development ofSetaria viridisin response to variations in temperature and photoperiod and to determine the duration of the juvenile phase and the effect of temperature and photoperiod on reproductive development.Setaria viridiswas adapted to a temperature range from 6.5 to 47 C. Phenologi
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WEAVER, S. E., C. S. TAN, and P. BRAIN. "EFFECT OF TEMPERATURE AND SOIL MOISTURE ON TIME OF EMERGENCE OF TOMATOES AND FOUR WEED SPECIES." Canadian Journal of Plant Science 68, no. 3 (July 1, 1988): 877–86. http://dx.doi.org/10.4141/cjps88-105.

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The relative times to emergence of seedlings of tomato (Lycopersicon esculentum L.) and four weed species were compared at five alternating temperatures and five levels of available soil moisture in a growth chamber. Weed seeds were sown either on the soil surface or 1.5 cm below it. A cumulative distribution function was used to describe the time required for emergence under a given set of conditions. Time to 50% emergence, base temperatures and accumulated degree days required for 50% emergence were calculated for each species. In general, total emergence decreased as soil moisture decreased
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Rozprawy doktorskie na temat "Effect of temperature on weeds"

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Omami, Elizabeth Nabwile, of Western Sydney Hawkesbury University, of Agriculture Horticulture and Social Ecology Faculty, and School of Horticulture. "Amaranthus retroflexus seed dormancy and germination responses to environmental factors and chemical stimulants." THESIS_FAHSE_HOR_Omami_E.xml, 1993. http://handle.uws.edu.au:8081/1959.7/66.

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A large number of weed seeds in the soil persist because of seed dormancy, and depletion of the seed bank through manipulation of seed dormancy has been suggested as one of the goals in weed control. This study was designed to investigate some of the factors which control dormancy and germination in Amaranthus retroflexus seeds. Germination studies were conducted at different temperatures, and either in continuous white light or in the dark. Higher temperatures increased germination and, although light interacted with temperature, its effect on germination varied with the temperature. In an at
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Omami, Elizabeth Nabwile. "Amaranthus retroflexus seed dormancy and germination responses to environmental factors and chemical stimulants." Thesis, [S.l. : s.n.], 1993. http://handle.uws.edu.au:8081/1959.7/66.

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A large number of weed seeds in the soil persist because of seed dormancy, and depletion of the seed bank through manipulation of seed dormancy has been suggested as one of the goals in weed control. This study was designed to investigate some of the factors which control dormancy and germination in Amaranthus retroflexus seeds. Germination studies were conducted at different temperatures, and either in continuous white light or in the dark. Higher temperatures increased germination and, although light interacted with temperature, its effect on germination varied with the temperature. In an at
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Suryani, Titik. "The effects of temperature, hours of leaf wetness, age of giant foxtail (setaria faberi herrm.), and host specificity of phoma sp. as a biological herbicide." Virtual Press, 1995. http://liblink.bsu.edu/uhtbin/catkey/941362.

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Inoculation studies were conducted in controlled environments with isolates of a Phoma sue. collected from leaf spot lesions on the weed giant foxtail. Limited host specificity studies resulted in this potential bioherbicide fungus killing all three foxtail species tested including Setaria faberi (giant), a. viridis (green) and S. lutescens (yellow). Several agronomically important plant species tested exhibited a hypersensitive-type response to infection, but these plants soon grew out of this symptom and appeared healthy. This bioherbicide preferred cool temperatures, exhibiting optimal bio
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Antill, Marc. "The effect of repair welds on the high temperature low cycle fatigue behaviour of nickel base superalloy turbine blades." Thesis, University of Bristol, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.297923.

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Pline, Wendy Ann. "Effect of Temperature and Chemical Additives on the Efficacy of the Herbicides Glufosinate and Glyphosate in Weed Management of Liberty-Link and Roundup-Ready Soybeans." Thesis, Virginia Tech, 1999. http://hdl.handle.net/10919/31699.

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The introduction of herbicide resistant crops offers producers many more options for weed control systems. These crops allow environmentally safe, non-selective herbicides to be used as selective herbicides, broadening the spectrum of weeds controlled, while not harming the crop. As these crops are very new on the market, investigation of their performance under various environmental conditions as well as in various weed control programs is needed. Liberty-link ® soybeans are resistant to the herbicide glufosinate, because of the incorporation of a gene encoding phosphinothricin acetyl-tr
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Virbickait-Staniulienė, Rasa. "The impact of high-temperature environment on weeds highly resistant to thermal killing." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2010. http://vddb.laba.lt/obj/LT-eLABa-0001:E.02~2010~D_20101214_140738-85437.

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The dissertation has set the aim to determine the influence of a high-temperature environment on highly resistant to thermal killing. Not all weeds equally respond to the thermal effect when wet water vapour is applied for thermal weed control. After thermal destruction of the above-ground part some varieties of weeds spring up again. Analysis of the morphological structure of weeds and their responsiveness to wet water vapour allows weed classification into three groups: weeds of low resistance to thermal killing, those of high resistance to thermal killing (meadow-grass and rosette weeds) an
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Umeda, Kai. "Effect of Halosulfuron on Rotational Crops." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2002. http://hdl.handle.net/10150/214957.

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A field test was conducted to evaluate and determine the safety of halosulfuron on typical rotational crops such as lettuce, broccoli, spinach, onion, alfalfa, barley, field corn, and melons after an initial application on cantaloupes. Halosulfuron at 0.05 or 0.1 lb AI/A applied on cantaloupes did not detrimentally affect crop stand establishment, height, or whole plant fresh weights when alfalfa, barley, spinach, lettuce, onion, and broccoli were planted at approximately 4 to 5 MAT. Cantaloupes and field corn planted at 1 YAT were not affected in establishing a stand and in growing during the
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Umeda, K., and N. Lund. "Effect of Prowl and Prefar Herbicides on Onions." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2001. http://hdl.handle.net/10150/214935.

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Significant onion height reduction was observed when Prowl (pendimethalin) and Prefar (bensulide) herbicide combinations were applied preemergence (PREE). The onions resumed growth but the height was still slightly reduced later in the growing season compared to the handweeded check and the standard herbicide treatment, Dacthal (DCPA). The onion crop stand emerged initially but later in the season, a significant crop stand reduction was observed for the higher rate of Prowl at 0.5 lb AI/A plus Prefar. A lower rate of Prowl at 0.25 lb AI/A plus Prefar also caused a reduction of the onion stand
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Fillmore, Andrew Nathan. "Droplet Size Effect on Herbicide Used in Cereals to Control Dicotyledonous Weeds." Thesis, North Dakota State University, 2014. https://hdl.handle.net/10365/27419.

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Experiments were conducted to evaluate the effect of droplet size on the efficacy of translocated and non-translocated herbicides. Translocated and non-translocated herbicides provided similar control when comparing droplet size effect on efficacy. Medium and very coarse droplet sizes gave the greatest visible injury whereas coarse-sized gave the lowest visible injury assessments for most species. However, droplet size generally did not affect contact herbicide efficacy. Overall, droplet size was not a strong factor contributing to herbicide efficacy and often, differences were only between he
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Hewitt, Cade Alan. "Effect of row spacing and seeding rate on grain sorghum tolerance of weeds." Thesis, Kansas State University, 2015. http://hdl.handle.net/2097/19784.

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Master of Science<br>Department of Agronomy<br>J. A. Dille<br>Weed control in grain sorghum has always presented a challenge to producers in the semi-arid Great Plains. Cultural control tactics such as narrowing of row spacings and increasing seeding rates can be effective control methods. The objective of this research was to determine the row spacing and seeding rates that maximizes yield while suppressing weeds. Grain sorghum row spacings of 25, 51, and 76-cm and seeding rates of 75,000, 100,000, 125,000, and 150,000 seeds ha[superscript]-1 were evaluated in Kansas at Beloit and Manhattan i
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Książki na temat "Effect of temperature on weeds"

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Hansson, David. Hot water weed control on hard surface areas. Alnarp: Swedish University of Agricultural Sciences, 2002.

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Hamada, Azhari Abdelazim. Investigations on the germination requirements and competitive effects of weeds: A case study of the Rahad Scheme in the Sudan. Weikersheim [Germany]: Josef Margraf, 1992.

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Mallory-Smith, Carol. Herbicide-resistant weeds and their management. [Moscow, Idaho]: University of Idaho Cooperativae Extension System, 1993.

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Mallory-Smith, Carol. Herbicide-resistant weeds and their management. [Moscow, Idaho]: University of Idaho Cooperativae Extension System, 1993.

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Mallory-Smith, Carol. Herbicide-resistant weeds and their management. [Moscow, Idaho]: University of Idaho Cooperativae Extension System, 1993.

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Mallory-Smith, Carol. Herbicide-resistant weeds and their management. [Moscow, Idaho]: University of Idaho Cooperativae Extension System, 1999.

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Mallory-Smith, Carol. Herbicide-resistant weeds and their management. [Moscow, Idaho]: University of Idaho Cooperativae Extension System, 1999.

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Harań, Grzegorz. Impurity effect in high temperature superconductors. Wrocław: Oficyna Wydawnicza Politechniki Wrocławskiej, 2001.

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Franklin, Keara A., and Philip A. Wigge. Temperature and plant development. Ames, Iowa USA: Wiley Blackwell, 2014.

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Ritter, Ronald Lloyd. Understanding herbicide resistance in weeds. Des Plaines, Ill: Sandoz Crop Protection Corp., 1989.

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Części książek na temat "Effect of temperature on weeds"

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Marques, Severino P. C., and Guillermo J. Creus. "Temperature Effect." In Computational Viscoelasticity, 51–58. Berlin, Heidelberg: Springer Berlin Heidelberg, 2012. http://dx.doi.org/10.1007/978-3-642-25311-9_6.

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Zhang, Guigen. "Temperature Effect." In Bulk and Surface Acoustic Waves, 257–71. New York: Jenny Stanford Publishing, 2021. http://dx.doi.org/10.1201/9781003256625-7.

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Alderliesten, René. "Effect of Temperature." In Fatigue and Fracture of Fibre Metal Laminates, 253–70. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-56227-8_11.

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Brown, R. P. "Effect of temperature." In Physical Testing of Rubber, 235–58. Dordrecht: Springer Netherlands, 1996. http://dx.doi.org/10.1007/978-94-011-0529-3_15.

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Brown, Roger. "Effect of Temperature." In Physical Test Methods for Elastomers, 305–31. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-66727-0_21.

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Ferrell, Richard A. "The Josephson Effect." In High Temperature Superconductivity, 60–83. New York, NY: Springer New York, 1990. http://dx.doi.org/10.1007/978-1-4612-3222-3_3.

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Oka, Yoshiaki. "Temperature Effect of Reactivity." In Nuclear Reactor Kinetics and Plant Control, 23–33. Tokyo: Springer Japan, 2012. http://dx.doi.org/10.1007/978-4-431-54195-0_3.

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Wen, Shengmin. "Temperature Effect on Fatigue." In Encyclopedia of Tribology, 3538–40. Boston, MA: Springer US, 2013. http://dx.doi.org/10.1007/978-0-387-92897-5_281.

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Shur, M., and M. A. Khan. "GaN-based field effect transistors." In High Temperature Electronics, 297–320. Boston, MA: Springer US, 1997. http://dx.doi.org/10.1007/978-1-4613-1197-3_10.

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Saha, Biswanath, Heena Kauser, Meena Khwairakpam, and Ajay S. Kalamdhad. "Effect and Management of Various Terrestrial Weeds—Review." In Lecture Notes in Civil Engineering, 231–38. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-0990-2_17.

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Streszczenia konferencji na temat "Effect of temperature on weeds"

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Dai, H., R. J. Moat, and P. J. Withers. "Modelling the Interpass Temperature Effect on Residual Stress in Low Transformation Temperature Stainless Steel Welds." In ASME 2011 Pressure Vessels and Piping Conference. ASMEDC, 2011. http://dx.doi.org/10.1115/pvp2011-57329.

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Weld residual stresses often have serious implications for the integrity of engineering structures (distortion, stress-corrosion cracking, hydrogen-induced cracking). Previously, it has been demonstrated by the authors that the use of a stainless steel welding consumable with a low martensite start temperature in single-pass welding can lead to lower (potentially harmful) tensile residual stresses or even compressive stress within the fusion zone and heat affected zones compared to non-transforming austenitic fillers. However, such effects may not carry over to multi-pass welding if the filler
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de Barbadillo, John J., Brian A. Baker, and Xishan Xie. "Microstructure Stability of Alloy 740H and its Effect on Material Properties." In ASME 2014 Symposium on Elevated Temperature Application of Materials for Fossil, Nuclear, and Petrochemical Industries. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/etam2014-1000.

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Alloy 740H was developed specifically for boiler tube and steam transfer pipe for the Advanced-Ultrasupercritical steam boiler application. The composition was formulated to provide creep strength, weldability and oxidation and coal ash corrosion resistance. It is the first nickel-base age-hardened alloy to be approved under Section 1 of the ASME Boiler and Pressure Vessel Code. Although a significant amount of microstructure and creep data was submitted to support the code case, it was largely collected on tube and light plate, much of this from pilot-scale material. The data package did not
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Bandara, R. M. U. S., T. K. Ilangakoon, H. M. M. K. K. H. Dissanayaka, Y. M. S. H. I. U. De Silva, C. H. Piyasiri, and D. M. C. B. Dissanayaka. "EFFECT OF ELEVATED TEMPERATURE ON WEED SEED GERMINATION IN PADDY SOIL SEED BANK." In International Conference on Agriculture and Forestry. The International Institute of Knowledge Management (TIIKM), 2018. http://dx.doi.org/10.17501/icoaf.2017.3103.

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Ronevich, Joseph A., Chris San Marchi, and Dorian K. Balch. "Temperature Effects on Fracture Thresholds of Hydrogen Precharged Stainless Steel Welds." In ASME 2017 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/pvp2017-65603.

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Austenitic stainless steels are typically used in hydrogen environments due to their resistance to hydrogen embrittlement; however, the behavior of welds is not as well understood and can vary from wrought base materials due to chemical composition differences and the presence of ferrite in the fusion zone of the weld. Applications of welded austenitic stainless steels exposed to hydrogen are not limited to room temperature but also include sub-ambient environments, which can have an additional effect on the degradation. In this study, fracture thresholds were measured of three different auste
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Trevisan, R. E., N. F. Santos, H. C. Fals, and A. A. Santos. "Effect of Interpass Temperature on Morphology, Microstructure and Microhardness of Welded API 5L X65 Steel." In 2002 4th International Pipeline Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/ipc2002-27112.

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The overwhelming bulk of oil and gas in pipeline construction is done by welding the individual joints of pipe together. In a broad sense, welding is a metal-joining process wherein coalescence is produced by heating to a suitable temperature. In pipeline construction, this temperature has to be sufficient to render fusion of the joint. The mechanical and metallurgical properties and distortions usually present in weld structures are strongly influenced by preheating and interpass temperatures that are applied during the welding process. Basically, interpass temperatures depend on two factors:
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Dodge, Michael, Lars Magne Haldorsen, Mike Gittos, and Kasra Sotoudeh. "Effect of Temperature on Resistance to Hydrogen Embrittlement of Dissimilar Metal Welds Subjected to SENB and SENT Testing." In ASME 2022 41st International Conference on Ocean, Offshore and Arctic Engineering. American Society of Mechanical Engineers, 2022. http://dx.doi.org/10.1115/omae2022-79852.

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Abstract Dissimilar metal welds (DMWs), as manifested by low alloy steels welded with nickel alloys, are commonly used in subsea production systems. In such applications, there is a risk of hydrogen embrittlement, due to the use of cathodic protection. Historically, one of the most reliable means of establishing the resistance of DMWs to hydrogen embrittlement has been to conduct fracture mechanics-based tests, under representative service conditions. These tests have proved valuable in ranking the performance of various DMWs and, also, emulating the fracture morphologies observed in many subs
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Andresen, Peter L., and Martin M. Morra. "Effect of Rising and Falling K Profiles on SCC Growth Rates in High Temperature Water." In ASME 2005 Pressure Vessels and Piping Conference. ASMEDC, 2005. http://dx.doi.org/10.1115/pvp2005-71643.

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Effects of rising and falling stress intensity factor (K) profiles on the SCC growth rates of stainless steel and nickel alloys has been studied in high temperature water. Sophisticated test control software was used that changes loading (P) based on crack length (a) to achieve a specific K trajectory by controlling dK/da, not simply dP/dt. The majority of SCC problems develop adjacent to welds, which have a complex residual stress profile vs. wall thickness. This, coupled with the dependence of K on crack length, causes K to change as the crack grows, not per se with time (t). The effect of “
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Tanaka, Tomohiro, Masamitsu Abe, Mitsuyoshi Nakatani, and Hidenori Terasaki. "Effect of Postweld Heat Treatment Conditions on Mechanical Properties of 9Cr-1Mo-V Steel Welds for Pressure Vessel." In ASME 2017 Pressure Vessels and Piping Conference. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/pvp2017-65320.

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2¼Cr-1Mo steel and 2¼Cr-1Mo-V steel which have high performance in high-temperature and high-hydrogen service are widely used in fabricating process equipment for the oil refining industry. With the demand for plants using low-grade crude oil expected to increase in the future, equipment will after to operate at higher temperatures and higher pressures to meet such demand. In addition, the demand for gasification process equipment for coal using high-temperature strength material, which is to be used as an alternative of oil, is expected to grow also. Although 2¼Cr-1Mo steel and 2¼Cr-1Mo-V ste
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Siefert, J., J. Parker, and J. Foulds. "Effect of PWHT on the Fracture Toughness and Burst Test Response of Grade 91 Tube Weldments." In ASME 2018 Symposium on Elevated Temperature Application of Materials for Fossil, Nuclear, and Petrochemical Industries. American Society of Mechanical Engineers, 2018. http://dx.doi.org/10.1115/etam2018-6714.

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Requirements for post-weld heat treatment (PWHT) of steels for pressure boundary component applications have been defined in terms of exceeding a minimum Charpy impact energy in an attempt to overcome the risk of brittle cracking. This approach can be excessively conservative since it does not properly assess resistance to cracking under the relatively static conditions encountered in pressure service. It is well established that under these conditions, cracking resistance, brittle or ductile, is more properly characterized using fracture toughness (KIc/JIc) type tests. The current paper descr
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Narayanan, Badri K., and Jon Ogborn. "Effect of Strain Ageing on Mechanical Properties of Pipeline Girth Welds." In ASME 2011 30th International Conference on Ocean, Offshore and Arctic Engineering. ASMEDC, 2011. http://dx.doi.org/10.1115/omae2011-49818.

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Pipeline girth welds for on-shore and off-shore pipelines use a variety of arc welding processes. The trend towards strain based designs for line pipe installation and the effect of coatings for off-shore pipelines have resulted in evaluation and testing of pipe material subjected to strain ageing. However, very little work has been done to systematically study the effect on ferritic weld metal. This work details some initial work done on evaluating the effect of strain ageing on ferritic weld metal deposited with a 1.2 mm diameter flux cored wire under 75% Ar −25% CO2 shielding gas. Pipeline
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Raporty organizacyjne na temat "Effect of temperature on weeds"

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VanderGheynst, Jean, Michael Raviv, Jim Stapleton, and Dror Minz. Effect of Combined Solarization and in Solum Compost Decomposition on Soil Health. United States Department of Agriculture, October 2013. http://dx.doi.org/10.32747/2013.7594388.bard.

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In soil solarization, moist soil is covered with a transparent plastic film, resulting in passive solar heating which inactivates soil-borne pathogen/weed propagules. Although solarization is an effective alternative to soil fumigation and chemical pesticide application, it is not widely used due to its long duration, which coincides with the growing season of some crops, thereby causing a loss of income. The basis of this project was that solarization of amended soil would be utilized more widely if growers could adopt the practice without losing production. In this research we examined three
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Samach, Alon, Douglas Cook, and Jaime Kigel. Molecular mechanisms of plant reproductive adaptation to aridity gradients. United States Department of Agriculture, January 2008. http://dx.doi.org/10.32747/2008.7696513.bard.

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Annual plants have developed a range of different mechanisms to avoid flowering (exposure of reproductive organs to the environment) under adverse environmental conditions. Seasonal environmental events such as gradual changes in day length and temperature affect the timing of transition to flowering in many annual and perennial plants. Research in Arabidopsis and additional species suggest that some environmental signals converge on transcriptional regulation of common floral integrators such as FLOWERING LOCUS T (FT). Here we studied environmental induction of flowering in the model legume M
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Nathan, Harms, and Cronin James. Variability in weed biological control : effects of foliar nitrogen on larval development and dispersal of the alligatorweed flea beetle, Agasicles hygrophila. Engineer Research and Development Center (U.S.), September 2021. http://dx.doi.org/10.21079/11681/41886.

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Host quality can have dramatic effects on performance of biological control agents but its importance is understudied. We used a combination of field measurements and laboratory experiments to determine the range of foliar nitrogen (FN) that larvae of the alligatorweed flea beetle (Agasicles hygrophila) are exposed to in the field and its importance to larval development and dispersal. Seasonal variability in FN was assessed at field sites spanning southern to northern Louisiana every 2–3 weeks during the growing season for four years. In a series of laboratory experiments, alligatorweed FN wa
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Yahav, Shlomo, John Brake, and Orna Halevy. Pre-natal Epigenetic Adaptation to Improve Thermotolerance Acquisition and Performance of Fast-growing Meat-type Chickens. United States Department of Agriculture, September 2009. http://dx.doi.org/10.32747/2009.7592120.bard.

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: The necessity to improve broiler thermotolerance and performance led to the following hypothesis: (a) thethermoregulatory-response threshold for heat production can be altered by thermal manipulation (TM) during incubation so as to improve the acquisition of thermotolerance in the post-hatch broiler;and (b) TM during embryogenesis will improve myoblast proliferation during the embryonic and post-hatch periods with subsequent enhanced muscle growth and meat production. The original objectives of this study were as follow: 1. to assess the timing, temperature, duration, and turning frequency r
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Nanstad, R. K., G. M. Goodwin, and M. J. Swindeman. Effects of nonstandard heat treatment temperatures on tensile and Charpy impact properties of carbon-steel casting repair welds. Office of Scientific and Technical Information (OSTI), April 1993. http://dx.doi.org/10.2172/10144288.

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Sawatzky, H., I. Clelland, and J. Houde. Effect of topping temperature on Cold Lake asphalt's susceptibility to temperature. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1991. http://dx.doi.org/10.4095/304486.

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Cheng, Juei-Teng, and Lowell E. Wenger. Josephson Effect Research in High-Temperature Superconductors. Fort Belvoir, VA: Defense Technical Information Center, August 1988. http://dx.doi.org/10.21236/ada201483.

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Korinko, P. EFFECT OF FILTER TEMPERATURE ON TRAPPING ZINC VAPOR. Office of Scientific and Technical Information (OSTI), March 2011. http://dx.doi.org/10.2172/1025512.

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Sun, W. D., Fred H. Pollak, Patrick A. Folkes, and Godfrey A. Gumbs. Band-Bending Effect of Low-Temperature GaAs on a Pseudomorphic Modulation-Doped Field-Effect Transistor. Fort Belvoir, VA: Defense Technical Information Center, March 1999. http://dx.doi.org/10.21236/ada361412.

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Price, J. T., J. F. Gransden, M. A. Khan, and B. D. Ryan. Effect of selected minerals on high temperature properties of coke. Natural Resources Canada/ESS/Scientific and Technical Publishing Services, 1992. http://dx.doi.org/10.4095/304533.

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