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Relevant bibliographies by topics / Wild oats

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Academic literature on the topic 'Wild oats'

Author: Grafiati

Published: 4 June 2021

Last updated: 12 February 2022

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Journal articles on the topic "Wild oats"

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CHUBB, W. O., and G. H. FRIESEN. "WILD OAT INTERFERENCE IN SUNFLOWER." Canadian Journal of Plant Science 65, no. 1 (January 1, 1985): 219–22. http://dx.doi.org/10.4141/cjps85-031.

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In field experiments, sunflower (Helianthus annuus L. ’Hybrid 894’) recovered from initial effects of wild oat (Avena fatua L.) interference and yielded normally if the weed was removed within 4 wk after crop emergence and the crop was kept relatively free of wild oats thereafter until harvest. In widely spaced plantings, wild oats growing between-the-rows competed just as vigorously as in-the-row infestations. Selective postemergence herbicides did not always provide sufficient control of wild oats to prevent significant losses in sunflower yield.Key words: Competition, interference, seed yield, oil content, herbicides, critical period

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Cudney, David W., Lowell S. Jordan, Jodie S. Holt, and John S. Reints. "Competitive Interactions of Wheat (Triticum aestivum) and Wild Oats (Avena fatua) Grown at Different Densities." Weed Science 37, no. 4 (July 1989): 538–43. http://dx.doi.org/10.1017/s0043174500072374.

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Competitive interactions of wheat and wild oats in relation to variations in plant density of both species were investigated in field studies under irrigation and added fertilizer. Competition studies included comparisons by both additive and replacement series. The additive series was used to study plant responses to competition under fixed density of wheat and increasing density of wild oats. The replacement series was used to study plant responses to competition under constant total plant density with differing proportions of wheat and wild oats. On a per plant basis, shoot dry weight and leaf area index of wild oats were less than those of wheat at anthesis. However, the replacement series experiment indicated that wheat and wild oats were equivalent in competitiveness. Relative density of wild oats gave a better regression fit for wheat yield than did absolute wild oats density (r2values of 0.83 and 0.61, respectively). Yield of wheat grain was linearly proportional to relative density of wild oats.

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Dunan, Claudio M., and Robert L. Zimdahl. "Competitive Ability of Wild Oats (Avena fatua) and Barley (Hordeum vulgare)." Weed Science 39, no. 4 (December 1991): 558–63. http://dx.doi.org/10.1017/s0043174500088378.

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Replacement series and growth analysis experiments under greenhouse and field conditions quantified and explained the competitive ability of wild oats and barley. Barley was a stronger competitor than wild oats under greenhouse and field conditions. The reciprocal yield approach showed that barley's intraspecific competition was 7.3 times greater than its interspecific competition with wild oats when calculated on a dry weight per plant basis. When leaf area per plant was the yield variable, barley's intraspecific competition was only 2.4 times greater than its interspecific competition. The difference was explained by wild oats' higher leaf area ratio. Barley had a greater leaf area, root and shoot biomass, absolute growth rate, and shoot-root ratio than wild oats, but wild oats' leaf area ratio was always higher. No differences were detected in relative growth rate and net assimilation rate.

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LEGER, ELIZABETH A. "Sowing (and mapping) the wild oats." Molecular Ecology 18, no. 18 (September 2009): 3759–60. http://dx.doi.org/10.1111/j.1365-294x.2009.04303.x.

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Darmency, Henri, and Catherine Aujas. "Genetic Diversity for Competitive and Reproductive Ability in Wild Oats (Avena fatua)." Weed Science 40, no. 2 (June 1992): 215–19. http://dx.doi.org/10.1017/s0043174500057258.

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Three wild oats phenotypes were grown in wheat stands sown at different dates in greenhouse and field trials. Wild oats growth and seed output, and their effects on wheat biomass were not different among phenotypes when wild oats emerged 2 wk after the wheat. In experiments in which wild oats were planted in germinated wheat, one phenotype was shorter, weighed less, and produced fewer seed than the other phenotypes. Another phenotype reduced wheat biomass more than the other phenotypes. Vernalization increased vegetative growth and reduced spikelet production of one phenotype, but had no effect on its competitiveness with wheat.

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Colgrave, Michelle. "Wild about oats: detecting unlabeled oats in breakfast cereals using LC-MS." INFORM International News on Fats, Oils, and Related Materials 30, no. 2 (February 1, 2019): 19–22. http://dx.doi.org/10.21748/inform.02.2019.19.

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Thill, D. C., J. T. O’Donovan, and C. A. Mallory-Smith. "Integrated weed management strategies for delaying herbicide resistance in wild oats." Comptes rendus 75, no. 4 (April 12, 2005): 61–70. http://dx.doi.org/10.7202/706072ar.

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Herbicide-resistant biotypes of wild oats (Avena fatua) infest most major cereal producing regions in the western United States and Canada. This paper reviews potential integrated weed management strategies that can be used to prevent or delay selection of herbicide-resistant wild oats plants. An integrated wild oats management strategy to delay or prevent the development of herbicide resistance should be based on preventing the movement of wild oats seed into the soil. Two ways to achieve this are by preventing the immigration of seed into the field from external sources, and by reducing or eliminating seed production by wild oats already in the field. It is becoming increasingly clear that reliance on continuous herbicide useas the sole means of weed control will fail to eliminate wild oats and other weed seed from the soil seedbank. On the contrary, evidence is mounting that this practice will select for biotypes that are resistant to the herbicides used, especially where herbicides of the same mode of action are used continuously. It is essential, therefore, that herbicides be considered as just one component of an overall integrated System together with cultural control and other management strategies, and that agronomic principles be considered when developing this System.

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Tettenborn, A. M. "Wild Oats and the Sale of Goods." Cambridge Law Journal 45, no. 3 (November 1986): 389–91. http://dx.doi.org/10.1017/s0008197300118367.

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Heisler, Jennifer M. "They Need to Sow Their Wild Oats." Emerging Adulthood 2, no. 4 (September 23, 2014): 280–93. http://dx.doi.org/10.1177/2167696814550196.

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LANDES, A., and J. R. PORTER. "Development of the Inflorescence in Wild Oats." Annals of Botany 66, no. 1 (July 1990): 41–50. http://dx.doi.org/10.1093/oxfordjournals.aob.a087998.

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Dissertations / Theses on the topic "Wild oats"

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Mansooji, Ali Mohammad. "Herbicide resistance in wild oats, Avena spp." Title page, contents and abstract only, 1993. http://web4.library.adelaide.edu.au/theses/09PH/09phm289.pdf.

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Maneechote, Chanya. "Mechanisms of herbicide resistance in wild oats (Avena spp.)." Title page, contents and abstract only, 1995. http://web4.library.adelaide.edu.au/theses/09PH/09phm274.pdf.

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Bibliography : leaves 159-184. This study found at least three mechanisms of resistance to the acetyl coenzyme A carboxylase (ACCase)-inhibiting herbicides. A modified target -site was responsible for moderate and high resistance to herbicides at the whole plant level. Enhanced herbicide metabolism and reduced translocation of herbicide to the target site was observed in one resistant biotype each.

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Dixon, Peter Allan. "Herbicide resistance in wild oats : genetic variation and ecology." Thesis, University of Liverpool, 2001. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.343857.

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Manlove, R. J. "On the population ecology of Avena fatua L." Thesis, University of Liverpool, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.377141.

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Tilsner, Heidy Rose. "Studies on the induction and release of seed dormancy in wild oats (Avena fatua L.)." Thesis, University of British Columbia, 1986. http://hdl.handle.net/2429/26092.

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The induction and release of secondary dormancy by anaerobiosis in genetically pure dormant (AN-51, Mont 73) and nondormant (CS-40, SH-430) lines of Avena fatua L. and the role of alternative respiration in the regulation of its primary and secondary dormancy were studied. These lines differed with regard to the optimal period of anaerobiosis necessary for induction of dormancy and/or the degree (% of seeds acquiring dormancy) and duration of dormancy induced. Secondary dormancy could be induced more effectively in after-ripened seeds of dormant lines than in nondormant lines where only a short-term dormancy could be induced (in 5-7 week old seeds). As with primary dormancy, wild oat biotypes exhibit genetic variability in their secondary dormancy behaviour and factors such as temperature can modify the expression of this trait. The germination stimulants kinetin, isopentenyl adenine, sodium azide, potassium nitrate and ethanol, which break primary dormancy in wild oats, stimulated germination of secondarily dormant seeds (line AN-51). Since these chemicals are structurally diverse, primary and secondary dormancies appear to be regulated by similar mechanism(s). Salicylhydroxamate (SHAM), an inhibitor of alternative respiration, did not inhibit: 1. the respiration of embryos excised from after-ripened or secondarily dormant seeds, 2. the spontaneous release of secondary dormany in nondormant lines or 3. the release of secondary dormancy by a variety of chemicals (except azide), suggesting that alternative respiration is not involved in the induction or release of secondary dormancy. Azide and cyanide released seed dormancy at similar concentrations and treatment durations. While cyanide released primary dormancy in seeds with little after-ripening, azide was effective only in secondarily dormant seeds or seeds with more extensive after-ripening. Both inhibitors stimulated seed respiration to a similar extent. The release of dormancy by cyanide was always preceded by respiratory stimulation, but the latter appeared to be independent of germination. SHAM inhibited both the release of seed dormancy and the stimulation of seed respiration by azide but not by cyanide. Respiration was inhibited only when SHAM was applied concurrently with azide. When applied subsequent to azide treatment, SHAM had no effect. The respiration of seed pre-treated with azide and cyanide was insensitive to SHAM and therefore cannot be alternative. Studies were performed to determine the effect of pH on the stimulation of germination and respiration by cytochrome oxidase inhibitors. Although pH had little effect on seed respiration and germination in controls and in the presence of cyanide, it strongly affected the activity of azide. At pH 5, 1 mM azide inhibited both seed respiration and germination whereas at pH 7 it stimulated both. SHAM at pH 7 did not affect the stimulation of respiration by azide, but inhibited it in the unbuffered system and at pH 5. Thus, SHAM appears to alter azide activity by lowering pH, increasing the concentration of undissociated (active) azide, which then completely inhibits cytochrome oxidase and consequently, seed respiration and germination. The release of dormancy and the stimulation of respiration by cyanide and azide do not appear to be related to the inhibition of cytochrome-mediated respiration or the stimulation of alternative respiration.
Land and Food Systems, Faculty of
Graduate

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Antony, Thomas. "Evaluation of black oat (Avena strigosa Schreb) germplasm." Auburn, Ala., 2007. http://repo.lib.auburn.edu/07M%20Theses/ANTONY_THOMAS_35.pdf.

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Smith, Sally Jane. "A study of gibberellin signalling in wild oat (Avena fatua) aleurone." Thesis, University of Bristol, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.388030.

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Waterworth, Wanda Melody. "Gibberellin perception in aleurone : photoaffinity labelling and subcellular fractionation studies." Thesis, University of Bristol, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.337067.

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Dhaliwal, Baljinder Kaur. "Physiological basis of competition between spring barley and wild oat (Avena fatua.L)." Thesis, University of Reading, 1994. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.386984.

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Mehta, Sonali. "Genetic Investigation of Wild Oat with Acetyl-Coa Carboxylase Gene Sequence Variation." Thesis, North Dakota State University, 2013. https://hdl.handle.net/10365/27052.

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Wild oat (Avena fatua) is a grass weed species that infests cropland. Common post-emergent herbicides for controlling wild oat are those that inhibit acetyl-CoA carboxylase (ACCase) and acetolactate synthase (ALS). Variation among plastidic ACCase gene sequences of herbicide-susceptible wild oat biotypes USDA96 and KYN119 revealed ACCase gene diversity consistent with possible separate diploid ancestry, with KYN119 more likely to share diploid ancestry with herbicide-resistant UM1. USDA96 wild oat shows low-level tolerance to the ALS-inhibiting herbicide flucarbazone, and the inheritance of this tolerance was studied among F3 families generated from KYN119 and USDA96 reciprocal crosses. Quantitative inheritance was observed at the below-label flucarbazone rate of 1.81 g ai/ha. Some F3 families had higher post-treatment main shoot dry weights than either parent, which may be due to heterosis and/or genetic contributions from both parents. No evidence for association between the Acc1;1 ACCase gene and low-level tolerance to flucarbazone was observed.

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Books on the topic "Wild oats"

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Sams, Jeremy. Wild oats. London: Nick Hern Books, 1995.

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Morsi, Pamela. Wild oats. New York: Jove Books, 1993.

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Morsi, Pamela. Wild oats. Thorndike, Me: Thorndike Press, 1994.

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Morsi, Pamela. Wild oats. New York: Jove, 1993.

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Morsi, Pamela. Wild oats. New York: Jove Books, 1993.

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Henry, Veronica. Wild Oats. London: Penguin Group UK, 2009.

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Asch, Frank. Oats and wild apples. New York: Holiday House, 1988.

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Guin, Ursula K. Le. Wild oats and fireweed. New York: Harper & Row, 1987.

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Asch, Frank. Oats and wild apples. New York: Trumpet Club, 1989.

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Guin, Ursula K. Le. Wild oats and fireweed: New poems. New York: Perennial Library, 1988.

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Book chapters on the topic "Wild oats"

1

Taylor, H. F., and T. M. Codd. "The Chemical Control of Wild Oats in Oats — A Progress Report." In Proceedings of the Second International Oats Conference, 183–87. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4408-4_38.

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Fritz, S. E., and M. E. Sorrells. "Introgression of Diploid Wild Avena SPecies Into A.Sativa." In Proceedings of the Second International Oats Conference, 21–24. Dordrecht: Springer Netherlands, 1986. http://dx.doi.org/10.1007/978-94-009-4408-4_4.

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Hanson, L. D., P. C. Robert, and Marvin Bauer. "Mapping Wild Oats Infestations Using Digital Imagery for Site-Specific Management." In Site-Specific Management for Agricultural Systems, 495–503. Madison, WI, USA: American Society of Agronomy, Crop Science Society of America, Soil Science Society of America, 2015. http://dx.doi.org/10.2134/1995.site-specificmanagement.c34.

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Khan, Imtiaz, Gul Hassan, Muhammad Ishfaq Khan, and Meher Gul. "Tolerance of Different Wild Oats Biotypes to Different Oat Killers and Their Impact on Wheat." In Survival and Sustainability, 129–36. Berlin, Heidelberg: Springer Berlin Heidelberg, 2010. http://dx.doi.org/10.1007/978-3-540-95991-5_13.

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Sastry, K. Subramanya, Bikash Mandal, John Hammond, S. W. Scott, and R. W. Briddon. "Avena fatua (Common wild oat)." In Encyclopedia of Plant Viruses and Viroids, 223. New Delhi: Springer India, 2019. http://dx.doi.org/10.1007/978-81-322-3912-3_103.

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Colliver, C. T., B. D. Maxwell, D. A. Tyler, D. W. Roberts, and D. S. Long. "Georeferencing Wild Oat Infestations in Small Grains: Accuracy and Efficiency of Three Weed Survey Techniques." In Proceedings of the Third International Conference on Precision Agriculture, 453–63. Madison, WI, USA: American Society of Agronomy, Crop Science Society of America, Soil Science Society of America, 2015. http://dx.doi.org/10.2134/1996.precisionagproc3.c49.

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Siddiqi, M. Y., A. D. M. Glass, A. I. Hsiao, and A. N. Minjas. "Genetic differences among wild oat lines in potassium uptake and growth in relation to potassium supply." In Genetic Aspects of Plant Mineral Nutrition, 369–81. Dordrecht: Springer Netherlands, 1987. http://dx.doi.org/10.1007/978-94-009-3581-5_35.

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Kairė, Sandra, Lilija Duoblienė, and Irena Zaleskienė. "Social Responsibility Through the Lens of an Agenda for Cultural Literacy Learning: Analyses of National Education Policy Documentation." In Dialogue for Intercultural Understanding, 27–43. Cham: Springer International Publishing, 2021. http://dx.doi.org/10.1007/978-3-030-71778-0_3.

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AbstractThe contemporary world is marked by numerous new challenges: growth of inequality, migration, development of new technologies, climate change. All of them create tensions among nations, social groups or cultures. In the face of growing multiculturalism and need for dialogue, social responsibility as a concept in the educational field has received due attention. For instance, Berman (Educational Leadership, November:75–80, 1990; Children’s social consciousness and the development of social responsibility, University of New York Press, New York,1997; Leadership for social justice and democracy in our schools, Corwin Press, Thousand Oaks, CA, pp. 123–144, 2011) emphasized the importance of education for social responsibility in school and classroom and defined it as personal investment in the well-being of others. Vallaeys (GUNI Report of Higher Education in the World 5:88–96, 2014) discussed social responsibility as a matter of university mission and function. Berman (Leadership for social justice and democracy in our schools, Corwin Press, Thousand Oaks, CA, pp. 123–144, 2011) related the concept of social responsibility to the development of social consciousness that meant balancing on personal self-realization and personal achievement with equal focus on social self-realization and collective achievement. In particular, a person becomes conscious that personal development (i.e. How will I lead my life?) is interrelated with the development of others (i.e. What does the way I lead my life mean for the life of others?). In this case, social responsibility embraces cultural values and creates empowerment, cooperation, compassion, and respect.

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Pinto-Ledezma, Jesús N., and Jeannine Cavender-Bares. "Using Remote Sensing for Modeling and Monitoring Species Distributions." In Remote Sensing of Plant Biodiversity, 199–223. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-33157-3_9.

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AbstractInterpolated climate surfaces have been widely used to predict species distributions and develop environmental niche models. However, the spatial coverage and density of meteorological sites used to develop these surfaces vary among countries and regions, such that the most biodiverse regions often have the most sparsely sampled climatic data. We explore the potential of satellite remote sensing (S-RS) products—which have consistently high spatial and temporal resolution and nearly global coverage—to quantify species-environment relationships that predict species distributions. We propose several new environmental metrics that take advantage of high temporal resolution in S-RS data and compare these approaches to classic climate-only approaches using the live oaks (Quercus section Virentes) as a case study. We show that models perform similarly but for some species, particularly in understudied regions, show less precision in predicting spatial distribution. These results provide evidence supporting efforts to enhance environmental niche models and species distribution models (ENMs/SDMs) with S-RS data and, when combined with other approaches for species detection, will likely enhance our ability to monitor biodiversity globally.

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Manuel, Suvy. "OroAntral Communications and OroAntral Fistula." In Oral and Maxillofacial Surgery for the Clinician, 491–512. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-15-1346-6_24.

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AbstractRoutine exodontia is a common procedure performed by the general dental practitioner and the oral surgeon alike. Most of the maxillary premolar/molar extractions heal uneventfully, but some may cause inadvertent opening into the maxillary sinus, manifesting as immediate oroantral communications (OACs) or delayed oroantral fistulae. The common reasons being difficulty encountered in the extractions intra-operatively due to myriads of reasons or the OAC may be due to a pre-existing pathology in the periapical region or within the sinus lining. Whatever the reason be, it is paramount that the surgeon identifies the problem and approaches it in a sequential manner to avoid long-term consequences and to attain a perfect closure. The timing of the closure is crucial, which is dependent upon the sinus health and the socket condition. This may be complicated by a missing root tip, which is lying in the sinus. This chapter aims to walk the reader through these events in a logical fashion so that they can take appropriate decisions and use the correct surgical technique, which will ensure successful closure of the defect.

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Conference papers on the topic "Wild oats"

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Regitnig, Peter J., and Jennifer J. Nitschelm. "Chemical and mechanical control of group 1 resistant wild oats." In American Society of Sugar Beet Technologist. ASSBT, 2007. http://dx.doi.org/10.5274/assbt.2007.14.

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Bahaa, Nour, Mai Mahmoud, Ibrahim Fawzy, Abanoub George, Hager Sobeah, Nour El-Huda Awny, and Khaled Hussein. "Detection of Wild Oats based on Support Vector Machine Algorithms." In 2021 International Mobile, Intelligent, and Ubiquitous Computing Conference (MIUCC). IEEE, 2021. http://dx.doi.org/10.1109/miucc52538.2021.9447670.

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Kopena, Joseph B., Joshua Shaffer, and William C. Regli. "CAD Archives Based on OAIS." In ASME 2006 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2006. http://dx.doi.org/10.1115/detc2006-99675.

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Within the past few years, there has been a steady, substantial growth of interest in “long-term” archiving of digital data. This problem is particularly acute in many branches of engineering design, where cycles of technological obsolescence in supporting tools happen much more rapidly than those of designed products. Capturing and preserving design knowledge through these cycles is a major challenge that has come to be recognized by many government, industry, and research organizations. The ability to do so has important operational, efficiency, and legal ramifications for the manufacturing industry and its customers. This paper describes this problem, presenting examples of both why it must be addressed and why it is a challenge. In particular it relates preservation of engineering data to digital archiving efforts in other domains as well as ongoing work within the engineering research community on design repositories. As is shown, long term archiving of digital design knowledge draws upon both but possesses its own unique issues. Much of this discussion is couched within the language of the ISO Open Archival Information Systems (OAIS) Reference Model, including a mapping from an existing significant design repository into the OAIS model. In this way, it is hoped that this paper will widen the discussion on digital archiving within the community of this conference as well as help connect to research in other areas.

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Nedealcov, Maria, Ala Donica, and Nicolae Grigoras. "Evaluări privind impactul secetei asupra speciilor de stejari (Quercus Robur, Q. Petraea, Q.Pubescens) în condiții de aridizare a climei." In Starea actuală a componentelor de mediu. Institute of Ecology and Geography, Republic of Moldova, 2019. http://dx.doi.org/10.53380/9789975315593.27.

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The growth and survival of forests in the future, especially in the peripheral and transition areas of ecosystems, such as the Moldavian oak forests, depend directly on temperature changes and the amount of atmospheric precipitation. The purpose of this paper is to determine the potential impact of climate aridization on native species - oaks (Quercus robur, Q. petraea, Q.pubescens) in correlation with ecological niche for these species and identifying the vulnerability zones of forests versus the drought (reproduced by various values of the DeMartonne Index). It has been determined that mesophilic oak specie, during the vegetation period, in the central and southern part of the country, under more dry, more arid conditions of development, will feel changes in the sensitivity to water scarcity, changes in the compositional structure of the respective ecosystems and chorological displacements of the species (limiting the growth area of the Quercus robur, Q. petraea and advancing of Q.pubescens to the central part of country).

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Grauer, Michael J., Iris K. Howley, Joseph B. Kopena, and William C. Regli. "Towards a Format Registry for Engineering Data." In ASME 2007 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/detc2007-35652.

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There has been a great deal of interest recently in the problem of long term archiving of digital data. This is especially so in engineering design, where the CAD software tools evolve rapidly but the manufactured products themselves have much longer lifetimes whose support requires archived design data in a usable form. The ISO Open Archival Information Systems (OAIS) Reference Model is a widely used standard for digital archiving, with an essential piece of this model being a file format registry. A file format registry is a system for housing information about file formats that allows for correct interpretation, rendering, storage, and translation of digital files. Currently there exists no file format registry specifically for CAD file formats. This paper explains the purpose of a file format registry for CAD in the greater context of digital archiving, and then presents our approach to creating a CAD file format registry using the Resource Description Framework (RDF) language of the Semantic Web. By creating our file format registry in RDF, we allow archival systems to perform automated reasoning on the stored files. We hope that this paper will increase awareness of this element of engineering design repositories in the research community of this conference.

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J. DIAZ-MAROTO, Ignacio, and Pablo VILA-LAMEIRO. "PLANNING AND MANAGEMENT OF DECIDUOUS HARDWOODS STANDS IN NORTH-WESTERN SPAIN: A BASIS FOR SUSTAINABLE RURAL DEVELOPMENT." In Rural Development 2015. Aleksandras Stulginskis University, 2015. http://dx.doi.org/10.15544/rd.2015.074.

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The climax vegetation that currently covers the north-western Spain is the deciduous hardwoods forests characterized by different oak species. Galician oaks present a wide-ranging range of ages and qualities, as a result of the different uses and status of conservation. Many of these forests were intensively exploited, and in many cases inappropriate management practices have been applied. However, today these forests comprise a habitat of interest to the European Community and should be conserved, remain basic, in many areas to implement sustainable rural development. Common oak forests (Quercus robur L.) occupy an area of 246,445 ha in Galicia, 18 % of the total forest area. The current location of a lot of oak stands in steep zones indicates that they have remained in such areas from immemorial times because it was not possible the harvesting and these stands are now very important in ecological and landscape terms. The best sites for Quercus robur correspond to zones where the climatic characteristics combine optimally higher minimum temperature, lower thermal amplitude and higher precipitation. Known the present silvicultural status of these forests, alternative methods must be proposed for its management, which will range from a conversion to high forest to recovery of the most deteriorated stands by reforestation.

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Patel, Nikhil, and Darren D. Schmidt. "Biomass Boundary Layer Turbine Power System." In 2002 International Joint Power Generation Conference. ASMEDC, 2002. http://dx.doi.org/10.1115/ijpgc2002-26035.

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A “Boundary Layer Turbine” (BLT), with a specially designed multiple-disk rotor consisting of a number of closely packed parallel disks fixed to the shaft, was used to demonstrate direct conversion of biomass for small-scale distributed power generation. The turbine operates under the effect of skin friction drag exerted on the parallel plates, resulting from the flow of hot gases between the parallel plates. This concept is well known for its resistance to erosion when pumping viscous fluids, and the technology has been developed for commercial pump applications but not for a turbine. The turbine based on this concept is capable of encountering particle-laden gas and can accept ash-containing biomass fuels. In the present experiments, wood-derived sawdust (particle size ∼1 mm) and natural oats were fired separately as the test fuels. These fuels were injected directly into the stream of vitiated hot air downstream of the combustor. The location of injection was based on a 1- to 3-second residence time for complete combustion. This paper discusses a performance study and assessment of deposition, erosion, and corrosion (DEC) effects on the working components of the BLT. The potential for cost-effective electricity production from biomass in distributed-generation applications is also explored. The BLT was operated for 40 hours, consuming 68 kg of biomass fuel. The testing included initial firing of 10% biomass (by heating value), increasing to 100%. Documented performance shows isentropic turbine efficiencies of 11% at 3.2 kW and 6284 rpm. Turbine inlet conditions averaged 2.8 bar and 645 K. Over the course of testing, no significant component degradation was observed. The hot components were coated with a small amount of soot, but no deposits were formed that would lead to plugging or buildup in the turbine housing. The results of the study represent the first step toward development of a biomass BLT. It has been demonstrated that no significant barriers should hamper the use of biomass fuels in the rotor; however, isentropic efficiencies will have to be improved to at least 50% to achieve meaningful overall cycle efficiency.

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Hang, Yin, Ming Qu, and Fu Zhao. "Optimization Under Uncertainty: A Case Study of a Solar Absorption Cooling and Heating System for a Medium-Sized Office Building in Atlanta." In ASME 2012 6th International Conference on Energy Sustainability collocated with the ASME 2012 10th International Conference on Fuel Cell Science, Engineering and Technology. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/es2012-91406.

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Solar absorption cooling and heating (SACH) systems currently still stay at development and demonstration stage due to the nature of the complex system. It is critical for practitioners and engineers to have a correct and complete performance analyses and evaluation for SACH systems with respects of energy, economics, and environment. Optimization is necessarily involved to find the optimal system design by considering these three aspects. However, many assumptions made in the optimization are sensitive to the energy, economic, and environmental variations, and thus the optimization results will be affected. Therefore, the sensitivity and uncertainty analysis is important and necessary to make optimization robust. This paper uses a case study to explore the influence of the uncertainties on the SACH system optimization results. The case is a SACH system for a medium size office building in Atlanta. The one parameter at a time (OAT) sensitivity analysis method was applied firstly to determine the most sensitive inputs. Monte Carlo statistical method was utilized to generate the data sets for uncertainty analysis. The optimization problem under uncertainty was then formulated and solved. Due to the uncertainty associated with system inputs, the optimization solutions were found with certain types of the distributions. In addition, the scenario analysis on electricity price does not show large sensitivity to the objectives.

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Gaivoronskaya, Irina, and Valenitna Kolpakova. "MATHEMATICAL MODELS FOR THE SYNTHESIS OF PLANT-BASED COMPOSITIONS WITH IMPROVED AMINO ACID COMPOSITION." In GEOLINKS Conference Proceedings. Saima Consult Ltd, 2021. http://dx.doi.org/10.32008/geolinks2021/b1/v3/12.

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The aim of the work was to optimize the process of obtaining multicomponent protein compositions with high biological value and higher functional properties than the original vegetable protein products. Was realized studies to obtain biocomposites on the base of pea protein-oat protein and pea protein-rice protein. Developed composites were enriched with all limited amino acids. For each of the essential amino acids, the amino acid score was 100% and higher. Protein products used in these compositions are not in major allergen list, which allows to use these compositions in allergen-free products and specialized nutrition. To determine biosynthesis parameters for compositions from pea protein and various protein concentrates with the use of transglutaminase enzyme, was studied effect of concentration and exposition time on the amount of amino nitrogen released during the reaction. Decreasing of amino nitrogen in the medium indicated the occurrence of a protein synthesis reaction with the formation of new covalent bonds. Were determined optimal parameters of reaction: the hydromodule, the exposure time, the concentration of EP of the preparation, were obtained mathematical models. Studies on the functional properties of composites, the physicochemical properties of the proteins that make up their composition, and structural features will make it possible to determine the uses in the manufacture of food products based on their ability to bind fat, water, form foam, gels, and etc.

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HŮLA, Josef, and Petr NOVÁK. "IMPACT OF WORKING SPEED ON SOIL PARTICLES TRANSFER DURING SECONDARY SOIL TILLAGE." In RURAL DEVELOPMENT. Aleksandras Stulginskis University, 2018. http://dx.doi.org/10.15544/rd.2017.206.

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Displacement of soil particles by erosion can be seen as a major threat to the quality of agricultural land in the conditions of Czech Republic. While the effects of water and wind erosion have long been investigated and reported, the effect of soil tillage technology on soil particles translocation are relatively new area of agriculture research. Soil tillage may contribute to the undesirable translocation of soil particles towards lower-lying parts of fields especially on slopes. The effect of soil tillage implements on soil particle translocation has not been sufficiently explained yet. The object of this research was to assess the influence of different operating speed of power harrow on soil particle translocation during secondary tillage (soil preparation). Measurements to determine the displacement of soil particles were performed in location Nesperská Lhota in the Central Bohemia Region. Measurements were performed on a sandy loam cambisol after harvest spring cereals (oat for sillage production). To indicate displacement of soil particles was used grit of white limestone (size 10-16 mm). Limestone was put down into the trench with known position orthogonal to the direction of working operations. Subsequently were performed working operations in the specified sequence. Limestone particles were counted and weighed in each section. It was detected by measuring the different nature of displacement. Statistical significance of differences in the weight of translocated particles was evaluated for different operating speeds of power harrow from 4.5 to 12 km.h-1.

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Reports on the topic "Wild oats"

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Eggers, Jordan, Jennifer Juzwik, Shawn Bernick, and Lori Mordaunt. Evaluation of propiconazole operational treatments of oaks for oak wilt control. St. Paul, MN: U.S. Department of Agriculture, Forest Service, North Central Research Station, 2005. http://dx.doi.org/10.2737/nc-rn-390.

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