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Добірка наукової літератури з теми "Grain"

Автор: Grafiati

Опубліковано: 4 червня 2021

Оновлено: 1 серпня 2024

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Статті в журналах з теми "Grain"

Ramadhani, Siti Hasdiyanti, Ni Luh Sri Suryaningsih, and Yosefina Mangera. "Analysis of Grain Yield and Quality of Rice Aromatic Inpago Unsoed 1." AGRICOLA 8, no. 1 (September 24, 2019): 1–6. http://dx.doi.org/10.35724/ag.v8i1.2098.

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The purpose of the study was to determine the quality of the grainand rice are planted, the ricevarieties Inpago Unsoed 1. The research method use dis data collection, namely primary data andsecondary data. Primary data is used for observed in this research about grain moisturecontent,density of grain, foreign bodies, empty grains, grain crackedor broken, after the percentage ofgrain milled head of rice, broken rice, graing roats, grain limestone, yolk broken and milled rice yield.The results showed that during the observation the quality of grain varieties Inpago Unsoed 1 hasmilled at about 13,33% moisture content, grain density of 0,57g/ml, and grain weight is 27,60g/1000grain. The percentage point for the determination quality of head point is 73,49%, broken grainsabout 13,92%, and 12,34% graing roats. The quality of rice milled varieties inpago Unsoed 1 includelow. The lower of rice quality is due to the low of head rice percentage, while the percentage ofbroken grain sand high graing roats. Rice milled yield about 51,23%

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Huang, Yun Hua, Yue Zhang, Hao Zhai, Cheng Zhou, and Jian He. "Strengthening and Toughening Mechanisms of the Microalloying Non-Quenching and Tempering Steel." Materials Science Forum 475-479 (January 2005): 97–100. http://dx.doi.org/10.4028/www.scientific.net/msf.475-479.97.

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The microstructure of a microalloying non-quenching and tempering steel developed recently was analyzed through OM, SEM and TEM, in order to find the strengthening and toughening mechanisms of the steel. All of the dislocations and subgrain boundaries in the grains, the martensite in the martensite-austenite islands of the grainy bainite structure, the dispersed phases in the grains and at the grain boundaries, and the grain size were observed and studied in our experiments. The results indicate that the strengthening results from phase transition, dislocation, subgrain structure, dispersion phase and fined grain, and the toughness relates with the ferrite matrix consisting of the grainy bainite and the grain size of the steel. The mechanisms between the hot-rolled-and-cooled and the tempered steel are slightly different.

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Gulshad, Kurbanbaeva, and Askarova Khurshida. "GRAIN AND GRAIN STRUCTURE." American Journal of Applied Science and Technology 4, no. 3 (March 1, 2024): 29–33. http://dx.doi.org/10.37547/ajast/volume04issue03-06.

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High-quality grain cultivation, complete organization of conditions for its collection and storage, break-even liquidation of grain harvest create prerequisites for the growth of the economy of processing enterprises.

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Qiu, Hai, Rintaro Ueji, Yuuji Kimura, and Tadanobu Inoue. "Grain-to-Grain Interaction Effect in Polycrystalline Plain Low-Carbon Steel within Elastic Deformation Region." Materials 14, no. 8 (April 9, 2021): 1865. http://dx.doi.org/10.3390/ma14081865.

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A grain is surrounded by grains with different crystal orientations in polycrystalline plain low-carbon steel. The grain is constrained by its adjacent grains in the tension process. The interaction of the grain with the adjacent grains was investigated within the elastic deformation region. The following results have been obtained: (1) the Young’s modulus of a grain without consideration of grain-to-grain interaction is denoted as the inherent Young’s modulus; when the inherent Young’s modulus of a grain is equal to the Young’s modulus of the bulk material, there is almost no interaction between the grain and its adjacent grains; when a grain has a great difference between its inherent Young’s modulus and the Young’s modulus of the bulk material, its grain-to-grain interactions increase significantly; (2) the grain-to-grain interaction is mainly caused by the difference in the inherent Young’s modulus between the grain and its adjacent grains; the misorientation angle between the grain and its adjacent grains has almost no effect on the grain-to-grain interaction.

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Brdar, Milka, Borislav Kobiljski, and Marija Balalic-Kraljevic. "Grain filling parameters and yield components in wheat." Genetika 38, no. 3 (2006): 175–81. http://dx.doi.org/10.2298/gensr0603175b.

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Grain yield of wheat (Triticum aestivum L.) is influenced by number of grains per unit area and grain weight, which is result of grain filling duration and rate. The aim of the study was to investigate the relationships between grain filling parameters in 4 wheat genotypes of different earliness and yield components. Nonlinear regression estimated and observed parameters were analyzed. Rang of estimated parameters corresponds to rang of observed parameters. Stepwise MANOVA indicated that the final grain dry weight, rate and duration of grain filling were important parameters in differentiating among cultivars grain filling curves. The yield was positively correlated with number of grains/m2, grain weight and grain filling rate, and negatively correlated with grain filling duration. Correlation between grain weight and rate of grain filling was positive. Grain filling duration was negatively correlated with grain filling rate and number of grains/m2. The highest yield on three year average had medium late Mironovska 808, by the highest grain weight and grain filling rate and optimal number of grains/2 and grain filling duration.

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Bojarski, Stephanie A., Jocelyn Knighting, Shuai Lei Ma, William Lenthe, Martin P. Harmer, and Gregory S. Rohrer. "The Relationship between Grain Boundary Energy, Grain Boundary Complexion Transitions, and Grain Size in Ca-Doped Yttria." Materials Science Forum 753 (March 2013): 87–92. http://dx.doi.org/10.4028/www.scientific.net/msf.753.87.

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The thermal groove technique has been used to measure relative grain boundary energies in two 100 ppm Ca-doped yttria samples. The first has a normal grain size distribution and the boundaries have a bilayer of segregated Ca. In the second sample, there is a combination of large grains and small grains. The boundaries around the large grains are known to have an intergranular film. The results show that the relative energies of boundaries in the sample with normal grain growth and the boundaries around small grains far from larger grains in the second sample are similar. Also, boundaries surrounding the largest grains and small grains immediately adjacent to them have the same and significantly lower energies. The results indicate that grain boundaries with an intergranular film have a lower energy than those with bilayer segregation and that the intergranular film extends beyond the periphery of the largest grains, but not throughout the entire sample.

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Abdashimova, Khumora. "STUDYING THE WEIGHT OF 1000 GRAINS OF CEREALS AND LEGUMES." Eurasian Journal of Medical and Natural Sciences 03, no. 02 (February 1, 2023): 130–32. http://dx.doi.org/10.37547/ejmns-v03-i02-p1-20.

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The mass of 1000 grains also evaluates the grain density, studying the influence of the mass of 1000 grains on the technological properties of production, the effect of the mass of 1000 grains on grain and seeds, grain consistency, grain hardness.

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Dennis, J., Pete S. Bate, and John F. Humphreys. "Abnormal Grain Growth in Metals." Materials Science Forum 558-559 (October 2007): 717–22. http://dx.doi.org/10.4028/www.scientific.net/msf.558-559.717.

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Grain growth may occur in two forms, normal grain growth, characterized by a constant grain size distribution during growth, and abnormal grain growth, where one or more abnormally large grains may form in the microstructure. The presence of abnormally large grains in an otherwise uniform microstructure may be detrimental to the mechanical properties of a polycrystalline structure. Little is understood of the exact cause of abnormal grain growth. The annealing conditions leading to the onset of abnormal grain growth have been investigated via a series of grain growth experiments carried out on an Al-4wt%Cu alloy. The structure of which consisted of equiaxed grains (<8μ) pinned by a fine dispersion of sub-micron second phase particles, which may dissolve upon annealing. Minority texture components may experience accelerated growth due to a higher energy and mobility compared to the surrounding grain structure. The combination of these two events may result in the abnormal growth of some grains. SEM imaging and EBSD data has then made it possible to characterize the influence of particle dissolution and grain boundary misorientation on the onset of abnormal grain growth. The stability of ‘island grains’ found to exist internally in abnormally large grains has also been investigated in relation to the misorientation relationship and localized second phase volume fraction found there. There was only weak evidence of special misorientation relationships between the island grains and the abnormally large grains in which they exist, and although there was evidence of an enhanced fraction of pinning particles at island grain boundaries, this was also true of boundaries in general. The larger size of island grains is their dominant characteristic, and grains which become island grains may have been incipient abnormal grains.

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Rustandy, Evy Aqriany, Abdul Haris, and Edy Edy. "EVALUASI KARAKTER AGRONOMI PADI LOKAL ASE TADDAGA GENERASI M3 HASIL INDUKSI MUTASI SINAR GAMMA." AGrotekMAS Jurnal Indonesia: Jurnal Ilmu Peranian 4, no. 3 (January 18, 2024): 382–90. http://dx.doi.org/10.33096/agrotekmas.v4i3.408.

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Thiss research was conducted in pParippung Village, Barebboo District, Bone Regency, South Sulawesi Province from January to June 2022. This study aims to determine the effect of gamma ray radiation induction on the agronomic character of Ase Taddaga's local rice. This study was designed using a Randomized Block Design (RAK) method which consisted of 3 treatments, namely without radiation as a control, radiation with 200 Gray and radiation with 300 Gray. Each treatment was repeated 3 times to obtain 9 experimental units. The parameters observed were plant height (cm), number of tillers (stems), number of productive tillers (stems), flowering age (days), harvest age (days), malaig length (cm), number of grains (grain), dry grain weight. per clump (g), dry grain weight per plot (g) and dry grain weight per hectare (tonnes). The results showed that the gamma radiation treatment of 200 Grayy and 300 Gray had a good effect on the parameters of plant height, flowering age, harvest age and number of grains. The gamma ray radiation treatment had a significant effect on the parameters of the number of tillers, the number of productive tillers and the length of the panicle. While those that did not have a significant effect were the weight of top dry grain, dry grain weight per plot and ddry grainn weight per hectare.

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Zhu, Ye Chao, Jiong Hui Mao, Fa Tang Tan, and Xue Liang Qiao. "A Role of Low Energy Grain Boundaries in the Abnormal Grain Growth in Fe-3%Si Alloy." Applied Mechanics and Materials 127 (October 2011): 89–94. http://dx.doi.org/10.4028/www.scientific.net/amm.127.89.

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Low energy grain boundaries were considered to be important in abnormal grain growth by theoretical deduction. The disorientation angles and coincidence site lattice grain boundaries distribution of more than 20 Goss grains and their neighboring matrix grains in primary recrystallized Fe-3%Si alloy were investigated using an electron backscatter diffraction method. It was found that the frequency of low energy grain boundaries of Goss grains which are more likely to abnormally grow are higher than their neighboring matrix grains, which indicated that low energy grain boundaries play a dominant role in the abnormal grain growth of Fe-3%Si alloy. The result meets well with the abnormal grain growth theory.

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Дисертації з теми "Grain"

Muirhead, John J. "The morphological characterisation of grains and grain boundaries." Thesis, Sheffield Hallam University, 2001. http://shura.shu.ac.uk/20099/.

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It is well reported that the grain size of polycrystalline materials is important in determining mechanical properties. Within this thesis investigations are reported from an inter-comparison of grain size methods, the impact of an incomplete network of grain boundaries after chemical etching (missing boundaries) on grain size measurements and finally the relationship between grain size and the misorientation of grains. The experimental techniques used are manual grain size measurement methods, automatic image analysis and Electron Backscatter Diffraction (EBSD). The materials used are a ferritic, single phased, equi-axed steel (mild steel) and a ferrite/pearlite steel. The relative simplicity of the mild steel microstructure effectively removes complicating factors such as multi-phases or grain elongation allowing a more focused investigation into grain size methods. The ferrite/pearlite steel can be found more readily in industrial applications where impact toughness is an important property. Manual measurement methods and automatic image analysis are used for the inter-comparison of grain size methods. The manual methods are described in the standard ASTM E112, and are the lineal, planimetric, single circle and three circle methods. It is shown that there is a difference across the methods in the number of measurements required to obtain a specified accuracy. Also that sampling is critical to ensure that the measurements made are representative of the microstructure in that it is more important to measure more specimens than more fields of view within one specimen or many grains within one field of view. Automatic image analysis can provide a substantial database and thus is a useful grain sizing method. It is demonstrated that the number of pixels in a digital image forming a grain boundary, determined by the pixel resolution, will influence the measurements. Also from using digital images a specific number of grain boundaries are removed thus artificially creating missing boundaries making their impact on grain size measurements quantifiable. Manual and automatic measurements are conducted and it is shown that the mean grain size is relatively less affected by missing boundaries than might be perceived from a visual inspection. An EBSD map provides a complete network of grain boundaries since a boundary is formed from the orientation of one grain to another (misorientation), compared to standard metallographic techniques, e.g. chemical etching. EBSD maps are compared with optical images of the same fields of view and missing boundaries are then located. From this it is shown that there is a significant difference between two operators in determining the location of boundaries. EBSD is also used to investigate the correlation between the location of missing boundaries and the misorientation of the grains at that boundary and shows a trend of higher misorientation for boundaries not chemically etched up. The final section of this thesis is concerned with the relationship between the misorientation of small/small, small/large and large/large grains and the size of grains of the ferrite phase from the ferrite/pearlite steel. EBSD maps provide the misorientation data and are also used for grain sizing conducted on the automatic image analysis system. From the misorientation data the boundaries can be categorised as low or high angle and it is found that there are more low angle boundaries between small/small grains and small/large grains than between large/large grains.

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Ottman, Michael J., Michael D. Sheedy, and Richard W. Ward. "Clipping small grains to increase subsequent grain yield." College of Agriculture, University of Arizona (Tucson, AZ), 2016. http://hdl.handle.net/10150/625423.

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6 pp.
Wheat is commonly grown as a dual purpose crop especially in the Southern Great Plains where the forage is grazed then allowed to mature into a grain crop. In Arizona, clipping a crop planted in October may increase tillering and grain yield. A trial was conducted at the Maricopa Ag Center where various small grain varieties were planted on October 12, 2015, cut for forage on January 10, 2016, and allowed to go to grain and compared with the same varieties planted on December 3, 2016 and not cut for forage. No differences in grain yield due to planting date and clipping were detected. However, the October 12 planting with clipping had larger kernels, greater grain protein, and higher stem density. The income from the sale of the forage was $99/acre based a yield of 2639 lb/acre and a forage value of $75/ton. The added cost per acre to produce this forage included $29 for water (6.27 inches of water at $55/acre-ft) plus $34 for fertilizer (50 lb N/acre of urea at $433/ton). Therefore, even though grain yield was not increased by planting early and clipping, a net increase in revenue of $36/acre was realized from the sale of the forage.

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Myers, Randall T. (Randall Todd) 1972. "Grains and grain boundaries in lamellar styrene--butadiene block copolymers." Thesis, Massachusetts Institute of Technology, 1999. http://hdl.handle.net/1721.1/85277.

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Michaels, Joshua O. "Cross Grain." University of Cincinnati / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1407406914.

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Annis, Margaret Catherine, and n/a. "Extending stored grain research and technology to grain farmers." University of Canberra. Education, 1995. http://erl.canberra.edu.au./public/adt-AUC20060602.115607.

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This thesis is concerned with an investigation into current on-farm grain storage practice and with ascertaining what educational interventions, if any, are appropriate for future and more detailed consideration. The Australian grain growing, handling, and marketing industry has changed in recent times. A few years ago (1989), the grain growers only essential contact with grain marketing was through the bulk handling authorities and the Australian Wheat Board. Advice was freely available from state departments of agriculture, and the only requirement to store grain on-farm was that necessary for the grower's own needs. Now (1994), there is a possible advantage that grain stored on-farm may be used for a wide range of selling options, amongst other reasons, and market requirements are much more complex and stringent. There is a substantial body of research on grain storage techniques. At the same time there is a significant gap between researched knowledge and the use of this knowledge for on-farm storage. A major purpose of this study is to identify an improved approach to extension and farmer education that may help to reduce this gap. This thesis contains a review of the general literature on extension followed by an overview of extension in the developed world to establish the international context for Australia. Then the historical context of extension is examined briefly to understand the current situation in each state. Some educational models are reviewed to identify relationships between stakeholders and the opportunities available for and constraints to development of educational strategies. Information channels are reviewed to comprehend extension interaction and grain storage technologies are reviewed to ensure comprehension of techniques. On the basis of the literature review a field study was designed to investigate current on-farm storage practice, current extension sources for storage information and preferences for future educational interventions. This was done by a survey using a stratified random sample of grain growers and cluster selection of individuals for personal interviews. This information was complemented by informal discussion with farmers at field days. The results of the study confirmed the gap between research knowledge and on-farm implementation of this knowledge. They also demonstrated that grain growers wanted more information and gave some indicators of how this might be achieved. Major findings of the research included the need for extension coalitions and the desirability for active involvement of the grain grower. Major conclusions, for on-farm storage and extension, are drawn to form a basis for development of future extension interventions. These are aimed at ensuring grain growers have available the information needed for good storage practice. This includes an essential understanding the grain growers' needs and perceptions, early, in any planning process. It also includes the necessity for coordination of extension/education activities at local, regional and national levels. The research has some major implications for an improved approach to extension and on-farm storage. These include the establishment of a farmers-as-researcher program to implement grain storage innovations and the recognition that implemented change will need long term maintenance; often more resource intensive than the original intervention.

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Zhang, Qinghong. "SINTERING BEHAVIOR AND PROPERTIES STUDY IN STOICHIOMETRIC BLENDING BaTiOs." University of Cincinnati / OhioLINK, 2000. http://rave.ohiolink.edu/etdc/view?acc_num=ucin971278607.

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Mohd-Ali, B. B. "Computer mapping of grain structures in grain-oriented silicon-iron." Thesis, Bucks New University, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.373598.

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Sullwald, Wichard. "Grain regression analysis." Thesis, Stellenbosch : Stellenbosch University, 2014. http://hdl.handle.net/10019.1/86526.

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Thesis (MSc)--Stellenbosch University, 2014.
ENGLISH ABSTRACT: Grain regression analysis forms an essential part of solid rocket motor simulation. In this thesis a numerical grain regression analysis module is developed as an alternative to cumbersome and time consuming analytical methods. The surface regression is performed by the level-set method, a numerical interface advancement scheme. A novel approach to the integration of the surface area and volume of a numerical interface, as defined implicitly in a level-set framework, by means of Monte-Carlo integration is proposed. The grain regression module is directly coupled to a quasi -1D internal ballistics solver in an on-line fashion, in order to take into account the effects of spatially varying burn rate distributions. A multi-timescale approach is proposed for the direct coupling of the two solvers.
AFRIKAANSE OPSOMMING: Gryn regressie analise vorm ’n integrale deel van soliede vuurpylmotor simulasie. In hierdie tesis word ’n numeriese gryn regressie analise model, as ’n alternatief tot dikwels omslagtige en tydrowende analitiese metodes, ontwikkel. Die oppervlak regressie word deur die vlak-set metode, ’n numeriese koppelvlak beweging skema uitgevoer. ’n Nuwe benadering tot die integrasie van die buite-oppervlakte en volume van ’n implisiete numeriese koppelvlak in ’n vlakset raamwerk, deur middel van Monte Carlo-integrasie word voorgestel. Die gryn regressie model word direk en aanlyn aan ’n kwasi-1D interne ballistiek model gekoppel, ten einde die uitwerking van ruimtelik-wisselende brand-koers in ag te neem. ’n Multi-tydskaal benadering word voorgestel vir die direkte koppeling van die twee modelle.

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Gregory, George T. Jr. "Against the Grain." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1313429398.

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Ottman, Michael J. "Wheat and Barley Varieties for Arizona 2013." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2013. http://hdl.handle.net/10150/305109.

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Книги з теми "Grain"

Quinn, Bob, and Liz Carlisle. Grain by Grain. Washington, DC: Island Press/Center for Resource Economics, 2019. http://dx.doi.org/10.5822/978-1-61091-996-8.

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1909-1996, Livesay Dorothy, ed. Grain. Regina, Sask: Saskatchewan Writers Guild, 1987.

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Wrobel, Scott. Grain. Mankato, Minn: Creative Education, 1999.

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Stead, Robert J. C. Grain. Toronto: McClelland and Stewart, 1985.

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Cramer, Gail L., and Eric J. Wailes. Grain Marketing. 2nd ed. New York: CRC Press, 2021. http://dx.doi.org/10.1201/9780429037368.

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Priester, Louisette. Grain Boundaries. Dordrecht: Springer Netherlands, 2013. http://dx.doi.org/10.1007/978-94-007-4969-6.

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De Ron, Antonio M., ed. Grain Legumes. New York, NY: Springer New York, 2015. http://dx.doi.org/10.1007/978-1-4939-2797-5.

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Guild, Saskatchewan Writers'. Grain magazine. Saskatoon, Sask: Saskatchewan Writers Guild, 1997.

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Market Segment Specialization Program (U.S.), ed. Grain farmers. [Washington, D.C.?]: Dept. of the Treasury, Internal Revenue Service, 1995.

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1871-1946, Elford F. C., Archibald E. S. 1885-1968, and Canada. Dept. of Agriculture., eds. Grain screenings. Ottawa: Dept. of Agriculture, 1997.

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Частини книг з теми "Grain"

Quinn, Bob, and Liz Carlisle. "Introduction." In Grain by Grain, 1–14. Washington, DC: Island Press/Center for Resource Economics, 2019. http://dx.doi.org/10.5822/978-1-61091-996-8_1.

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Quinn, Bob, and Liz Carlisle. "The Value of Limits." In Grain by Grain, 123–32. Washington, DC: Island Press/Center for Resource Economics, 2019. http://dx.doi.org/10.5822/978-1-61091-996-8_10.

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Quinn, Bob, and Liz Carlisle. "Taste of Place." In Grain by Grain, 133–41. Washington, DC: Island Press/Center for Resource Economics, 2019. http://dx.doi.org/10.5822/978-1-61091-996-8_11.

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Quinn, Bob, and Liz Carlisle. "Recycling Energy." In Grain by Grain, 143–60. Washington, DC: Island Press/Center for Resource Economics, 2019. http://dx.doi.org/10.5822/978-1-61091-996-8_12.

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Quinn, Bob, and Liz Carlisle. "Bringing Rural Jobs Back." In Grain by Grain, 161–70. Washington, DC: Island Press/Center for Resource Economics, 2019. http://dx.doi.org/10.5822/978-1-61091-996-8_13.

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Quinn, Bob, and Liz Carlisle. "The Gluten Mystery." In Grain by Grain, 171–81. Washington, DC: Island Press/Center for Resource Economics, 2019. http://dx.doi.org/10.5822/978-1-61091-996-8_14.

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Quinn, Bob, and Liz Carlisle. "Food as Medicine." In Grain by Grain, 183–95. Washington, DC: Island Press/Center for Resource Economics, 2019. http://dx.doi.org/10.5822/978-1-61091-996-8_15.

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Quinn, Bob, and Liz Carlisle. "One Great Subject." In Grain by Grain, 197–207. Washington, DC: Island Press/Center for Resource Economics, 2019. http://dx.doi.org/10.5822/978-1-61091-996-8_16.

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Quinn, Bob, and Liz Carlisle. "Rejecting the Status Quo." In Grain by Grain, 209–18. Washington, DC: Island Press/Center for Resource Economics, 2019. http://dx.doi.org/10.5822/978-1-61091-996-8_17.

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Quinn, Bob, and Liz Carlisle. "Conclusion: A New Generation of Growers and Eaters." In Grain by Grain, 219–30. Washington, DC: Island Press/Center for Resource Economics, 2019. http://dx.doi.org/10.5822/978-1-61091-996-8_18.

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Тези доповідей конференцій з теми "Grain"

Chunli Wang, Dapeng Chai, Rui Ma, Xiaohui Lin, and Chun Wang. "Sand grains tracking in dense grain image sequences." In 2008 8th IEEE International Conference on Computer and Information Technology (CIT). IEEE, 2008. http://dx.doi.org/10.1109/cit.2008.4594699.

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Bakker, W. T., W. G. M. van Kesteren, and Z. H. Yu. "Grain-Grain Interaction in Oscillating Sheetflow." In 21st International Conference on Coastal Engineering. New York, NY: American Society of Civil Engineers, 1989. http://dx.doi.org/10.1061/9780872626874.054.

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Soares, J. A., R. L. C. Coura, N. M. Oliveira, L. C. Medeiros, J. J. Silva, L. Landau, and A. P. Martins Neta. "Grain-grain contacts evaluation in carbonate reservoirs." In 80th EAGE Conference & Exhibition 2018 Workshop Programme. Netherlands: EAGE Publications BV, 2018. http://dx.doi.org/10.3997/2214-4609.201801889.

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Lian, Jie, Javier Garay, and Junlan Wang. "Effect of Grain Size and Grain Boundary on Mechanical Yielding Behavior of Fully Stabilized Zirconia." In ASME 2006 International Mechanical Engineering Congress and Exposition. ASMEDC, 2006. http://dx.doi.org/10.1115/imece2006-15418.

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Mechanical properties of fully yttria stabilized zirconia (F-YSZ) with different grain sizes were investigated using instrumented indentation. While the grain size effect on the yield strength was performed on both the coarse-grained and fine-grained F-YSZ, the grain boundary effect was studied on the coarse-grained F-YSZ by performing nanoindentation within the grains and on/near the grain boundaries. Little variations were observed on mechanical properties such as hardness and reduced modulus, interesting results were obtained on the grain boundary effect on the yielding load for the course-grained F-YSZ.

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Aoki, Chuya, Masayoshi Date, Tomonori Ueno, Takehiro Ohno, and Katsunari Oikawa. "Generation Behavior of Abnormally Large Grain in Superalloy 718." In AM-EPRI 2019, edited by J. Shingledecker and M. Takeyama. ASM International, 2019. http://dx.doi.org/10.31399/asm.cp.am-epri-2019p0441.

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Abstract The behavior of strain-induced abnormal grain growth (AGG) in superalloy 718 has been investigated using compression testing and subsequent heat treatment below the d-phase solvus temperature of 980 °C. The nuclei of AGG grains were slightly newly recrystallized grains by a nucleation because small grains without dislocation was observed in the as- deformed microstructure. AGG was caused by the difference in intragranular misorientation (related to the stored strain energy in a grain) between dynamic recrystallized grains and deformed matrix. The initiation of AGG was retarded with decreasing plastic strain and produced microstructures consisted of larger grains having more complex morphology. It was observed that grain boundary migrated locally in the direction perpendicular to, or mainly in the direction parallel to the S3 {111} twin boundaries along with the formation of high-order twins. As a result of multiple twinning, AGG grains seemed to evolve with the growing directions changed.

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Muddukrishna, Ananya, Peter A. Jonsson, Artur Podobas, and Mats Brorsson. "Grain graphs." In PPoPP '16: 21st ACM SIGPLAN Symposium on Principles and Practice of Parallel Programming. New York, NY, USA: ACM, 2016. http://dx.doi.org/10.1145/2851141.2851156.

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Balusu, Kranthi, and Haiying Huang. "A CPFEM Investigation of the Effect of Grain Orientation on the Surface Profile During Tensile Plastic Deformation of FCC Polycrystals." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-71763.

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A Crystal Plasticity Finite Element Method (CPFEM) investigation was performed to study the effect of the grain orientation on the surface profile changes in FCC polycrystals undergoing plastic tensile deformation. A grain embedded in an isotropic sample was used to ensure that grain profile is influenced only by the grain orientation. Simulation with multiple sets of grain orientations has determined that strain compatibility is the key criterion dictating the relative sinking and rising of grains. As a consequence, the grains with axial orientations close to [001] and [111] orientations, i.e. the most compatible orientations, sink irrespective of the normal orientation. However, grains with other axial orientations may relatively rise or sink depending on the orientation normal to the surface.

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Dai, H. J., J. C. Gebelin, M. Newell, R. C. Reed, N. D'Souza, P. D. Brown, and H. B. Dong. "Grain Selection during Solidification in Spiral Grain Selector." In Superalloys. TMS, 2008. http://dx.doi.org/10.7449/2008/superalloys_2008_367_374.

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Chen, Liang, and Jiting Xu. "Grain Incipient Motion Considering Randomness of Grain Location." In GeoHunan International Conference 2011. Reston, VA: American Society of Civil Engineers, 2011. http://dx.doi.org/10.1061/47633(412)42.

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Maria Elena Ingles, Mark Casada, and Ronaldo G. Maghirang. "Commingling Effects and Residual Grain during Grain Receiving." In 2002 Chicago, IL July 28-31, 2002. St. Joseph, MI: American Society of Agricultural and Biological Engineers, 2002. http://dx.doi.org/10.13031/2013.9775.

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Звіти організацій з теми "Grain"

Balluffi, R. W., and P. D. Bristowe. Grain boundaries. Office of Scientific and Technical Information (OSTI), January 1991. http://dx.doi.org/10.2172/6114381.

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Marathon, Nick. Grain Transportation Report. U.S. Dept. of Agriculture, Agricultural Marketing Service, October 2012. http://dx.doi.org/10.9752/ts057.10-4-2012.

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Skone, Timothy J. Corn Grain, Production. Office of Scientific and Technical Information (OSTI), May 2012. http://dx.doi.org/10.2172/1509150.

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Lula, J. W., and G. W. Bohnert. Dehumidification Grain Dryer. Office of Scientific and Technical Information (OSTI), May 1998. http://dx.doi.org/10.2172/16593.

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Worden, Logan. Grain Marketing 101. Ames (Iowa): Iowa State University, January 2019. http://dx.doi.org/10.31274/cc-20240624-795.

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Hodgdon, Taylor, Brendan West, Julie Parno, Theodore Letcher, Zoe Courville, and Lauren Farnsworth. Extracting sintered snow properties from microCT imagery to initialize a discrete element method model. Engineer Research and Development Center (U.S.), September 2022. http://dx.doi.org/10.21079/11681/45305.

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Modeling snow’s mechanical behavior is important for many cold regions engineering problems. Because snow’s microstructure plays a significant role in its mechanical response, it is imperative to initialize models with accurate bond characteristics and realistic snow-grain geometries to precisely capture the microstructure interactions. Previous studies have processed microcomputed tomography scans of snow samples with a watershed method to extract grain geometries. This approach relies on identification of seed points to segment each grain. Our new methodology, called the “moving window method,” does not require prior knowledge of the snow-grain-size distribution to identify seed points. We use the interconnectivity of the segmented grains to identify bond characteristics. We compare the resultant grain-size and bond-size distributions to the known grain sizes of the laboratory-made snow samples. The grain-size distributions from the moving window method closely match the known grain sizes, while both results from the traditional method produce grains that are too large. We propose that the bond net-work identified using the traditional method underestimates the number of bonds and overestimates bond radii. Our method allows us to segment realistic snow grains and their associated bonds, without prior knowledge of the samples, from which we can initialize numerical models of the snow.

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Bojarski, Stephanie A., and Gregory S. Rohrer. The Role of Grain Boundary Energy on Grain Boundary Complexion Transitions. Office of Scientific and Technical Information (OSTI), September 2014. http://dx.doi.org/10.2172/1323555.

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Skone, Timothy J. Corn Grain, Cultivation, Operation. Office of Scientific and Technical Information (OSTI), June 2012. http://dx.doi.org/10.2172/1509025.

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Hanna, H. Mark, and Dana Schweitzer. Grain Drying Energy Use. Ames: Iowa State University, Digital Repository, 2016. http://dx.doi.org/10.31274/farmprogressreports-180814-1417.

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Hanna, H. Mark, and Shawn Shouse. Grain Drying Energy Use. Ames: Iowa State University, Digital Repository, 2017. http://dx.doi.org/10.31274/farmprogressreports-180814-1586.

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