Dissertations / Theses on the topic 'Cotton stalks'
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McGinley, Susan. "Harvesting Cotton Stalks." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 1993. http://hdl.handle.net/10150/622348.
Full textAk, Ozlem. "Xylooligosaccharide Production From Cotton And Sunflower Stalks." Phd thesis, METU, 2008. http://etd.lib.metu.edu.tr/upload/3/12609354/index.pdf.
Full textSaeidy, Ehab El. "Technological fundamentals of briquetting cotton stalks as a biofuel." Doctoral thesis, Humboldt-Universität zu Berlin, Landwirtschaftlich-Gärtnerische Fakultät, 2004. http://dx.doi.org/10.18452/15072.
Full textIn Egypt, cotton residues serve as an over wintering site for insects such as pink bollworm which develop in these residues and attack nearby or the following crops. This causes valuable losses in the quantity and the quality of the cotton crop so much, so that the farmers have been obliged by the Ministry of Agriculture to burn these residues on the field immediately after the harvest operation in order to kill these insects and to prevent growth of other disease carriers. As a result, a huge amount of harmful gases and clouds of smoke covers the sky above Cairo and the surrounding regions and has thus led to both environmental pollution and adverse effects for human health. As a result of this, the Ministry of the Environment established a law preventing the farmers burning these residues on the fields. Due to this confusion in laws, the farmers began to store these residues once again or burn them illegally on the fields. The briquetting technology appears as an advantageous solution for the handling of the cotton stalk residues in Egypt. Through this process a cheap, storable, pest controlled and environmentally friendly biofuel can be produced as a complementary domestic fuel for the Egyptian rural areas.
Carter, Lyle, Joe Chesson, Gary Thacker, and Vic Penner. "Tillage Energy Savings from Zone Burial of Shredded and Whole Cotton Stalks." College of Agriculture, University of Arizona (Tucson, AZ), 1996. http://hdl.handle.net/10150/210922.
Full textSilverstein, Rebecca Anne. "A Comparison of Chemical Pretreatment Methods for Converting Cotton Stalks to Ethanol." NCSU, 2005. http://www.lib.ncsu.edu/theses/available/etd-04292005-104024/.
Full textSaeidy, Ehab el. "Technological fundamentals of briquetting cotton stalks as a biofuel renewable energy in agriculture in Egypt /." [S.l. : s.n.], 2004. http://deposit.ddb.de/cgi-bin/dokserv?idn=972589341.
Full textHaykir, Nazife Isik. "Pretreatment Of Cotton Stalks With Ionic Liquids For Enhanced Enzymatic Hydrolysis Of Cellulose And Ethanol Production." Phd thesis, METU, 2013. http://etd.lib.metu.edu.tr/upload/12615446/index.pdf.
Full textC for 30 minutes, were found to be 9 times more digestible than untreated cotton stalks. Besides, glucose and ethanol yields, which were based on the cellulose content of untreated cotton stalks, were found as 67% and 66%, respectively. These yields were insufficient regarding efficient conversion of the cellulosic portion of cotton stalks to glucose and ethanol which is linked to the superior solvation capability of EMIMAc towards biomass. In order to enhance aforementioned yields, EMIMAc pretreatment was conducted at 30% of biomass loading. Though lignin extracted was much lower, higher yields were obtained compared to the former case since 96% of cellulose was recovered upon EMIMAc pretreatment and reduced crystallinity was observed for pretreated biomass. Glucose yield was achieved as 84% even at a substrate loading of 15% (w/v). Additionally, 76% of ethanol yield and 3% (v/v) of ethanol titer were obtained upon fermentation. Accordingly, reduction in biomass crystallinity was satisfactory to improve enzymatic accessibility of the biomass. Besides, EMIMAc maintained its effectiveness as a pretreatment agent upon recycling since no change in terms of hydrolysis of pretreated samples was observed upon EMIMAc recycling for three times.
Saeidy, Ehab El [Verfasser], Jürgen [Gutachter] Hahn, Klaus [Gutachter] Nendel, and Volkhard [Gutachter] Scholz. "Technological fundamentals of briquetting cotton stalks as a biofuel / Ehab El Saeidy ; Gutachter: Jürgen Hahn, Klaus Nendel, Volkhard Scholz." Berlin : Humboldt-Universität zu Berlin, 2004. http://d-nb.info/1207666718/34.
Full textBrown, J. K., J. D. Mihail, and M. R. Nelson. "The Effect of Cotton Leaf Crumple on Cotton Inoculated at Different Growth Stages." College of Agriculture, University of Arizona (Tucson, AZ), 1985. http://hdl.handle.net/10150/204078.
Full textMihail, J. D., J. K. Brown, and M. R. Nelson. "The Effects of Cotton Leaf Crumple on Greenhouse-Grown Cotton Incoulated at Five Growth Stages." College of Agriculture, University of Arizona (Tucson, AZ), 1987. http://hdl.handle.net/10150/204510.
Full textFisher, W. D., and E. J. Pegelow. "Heat Units and Stages of Plant Development." College of Agriculture, University of Arizona (Tucson, AZ), 1986. http://hdl.handle.net/10150/219831.
Full textKoita, Clare Coughlan. "Stakes of transnational civil society action : NGO advocacy interventions and the farmers of Mali's cotton zone." Thesis, University of Edinburgh, 2014. http://hdl.handle.net/1842/9824.
Full textRethwisch, M. D., M. Reay, G. Chaffin, R. Perez, J. Grudovich, J. Wellman, and E. Hawpe. "Late Planted DPL451BR Cotton Responses to Plant Growth Enhancement Products Applied at Three Crop Development Stages in Palo Verde Valley, 2003." College of Agriculture, University of Arizona (Tucson, AZ), 2004. http://hdl.handle.net/10150/198128.
Full textCekmez, Umut. "Isolation Of Antimicrobial Molecules From Agricultural Biomass And Utilization In Xylan-based Biodegradable Films." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12611492/index.pdf.
Full textC exhibited significant antimicrobial effect towards both Escherichia coli and Bacillus pumilus. However different post treatments such as ultrasonication and TiO2-assisted photocatalytic oxidation did not result in antimicrobial compounds. Olive mill wastewater and garlic stalk juice exerted substantial antimicrobial effects towards tested microorganisms. Xylan-based biodegradable films containing lignin, garlic stalk juice, tannic acid and olive mill wastewater were characterized against both B. pumilus and E. coli by means of their antimicrobial activities. E. coli exhibited lesser sensitivity to all tested antimicrobial xylan films except tannic acid-integrated xylan film than B. pumilus. Antimicrobial lignin integrated-xylan film exhibited stronger effect towards tested microorganisms than tannic acid-integrated film. In the case of both antimicrobial lignin and tannic acid integrated xylan films, 4% was found to be the maximum antimicrobial compound percentage in film forming solutions to observe continuous film formation. Lignin samples with/without antimicrobial activity were characterized by means of their chemical structure via FTIR and LC-MS. FTIR results revealed that cotton stalk lignins were significantly broken down via alkaline treatment and this breakdown resulted in the formation of new fractions and also ester &
ether bonds between antimicrobial hydroxycinnamic acids and lignin were cleaved during the alkaline treatments of cotton stalk lignins. By FTIR results, C=C bonds were found to be characteristic for antimicrobial lignin sample and it was suggested that these bonds might be the reason of the antimicrobial activity. By LC-MS qualitative mass analysis, antibacterial lignin fractions were found to be quite different from non-antibacterial lignin fractions. LC-MS results indicated that the antimicrobial lignin fractions might be lignin-derived oligomers and/or might be flavonoids. Cotton stalk lignin fractions demonstrated different antimicrobial activities depending on the method of isolation and chemical treatment.
Hu, Hong. "Contribution à l'étude de la géométrie du tricot molleton à points d'accrochages visibles 3 et 1 en coton application à la mise au point d'une méthode industrielle de traitement pour obtenir des articles dimensionnellement stables aux lavages /." Grenoble 2 : ANRT, 1987. http://catalogue.bnf.fr/ark:/12148/cb37605983k.
Full textHu, Hong. "Contribution à l'étude de la géométrie du tricot molleton à points d'accrochage visibles 3 et 1 en coton : application à la mise au point d'une méthode industrielle de traitement pour obtenir des articles dimensionnellement stables aux lavages." Mulhouse, 1987. http://www.theses.fr/1987MULH0037.
Full textAdawi, Rahim. "Preventing fatal effects of overworking : Product design solution." Thesis, Högskolan i Skövde, Institutionen för ingenjörsvetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:his:diva-15473.
Full text"Guolaosi" eller död från överarbete är ett fenomen som i regel uppkommer bland utvecklingsländer. Dödsorsaken är huvudsakligen genom stroke. Offrens yrken varierar allt från professorer, IT-arbetare till läkare. De delar dock en sak gemensamt; att arbeta under långa perioder stillasittande. Projektets mål var att utveckla en produkt som minskar dödliga följderna av sedentära överarbete, genom att förebygga en av de tre orsakerna för att utveckla blodproppar; saktad blodström. Målgruppen var då kineser av de yrken som hade tidigare drabbats av fenomenet. För att samla informationsrika data om fenomenet genomfördes en kvalitativ studie i Kina under två månader. Genom att göra en omfattande strukturerad provtagning kunde informationsrika data samlas under en kort tidsperiod. Fältstudien bestod av observationer, frågeformulär och en intervju, som då tolkades till kundbehov och eventuellt produktspecifikationen. Den slutliga produkten kom att bli ett par byxor med en inbyggd dynamisk komprimeringsmekanism, som kan komprimera venerna under sittande aktiviteter, för att förhindra saktad blodström. Kompressionsmekanismen fungerar som den kinesiska fingerfällan. Den komprimerar blodkärlen medan personen sitter och sträcker benen framåt. Produkten är konstruerad på så sätt att den kan tillverkas endast av polysackariders tråd, från bomull och majs. Vilket är lämpligt för Kinas lokala resurser.
Shi, Jian. "Microbial pretreatment of cotton stalks by Phanerochaete chrysosporium for bioethanol production." 2007. http://www.lib.ncsu.edu/theses/available/etd-03262007-172706/unrestricted/etd.pdf.
Full textSaeidy, Ehab el [Verfasser]. "Technological fundamentals of briquetting cotton stalks as a biofuel : renewable energy in agriculture in Egypt / von Ehab el-Saeidy." 2004. http://d-nb.info/972589341/34.
Full textWilliams, Kelly Caldwell. "Subcritical water and chemical pretreatments of cotton stalk for the production of ethanol." 2006. http://www.lib.ncsu.edu/theses/available/etd-06012006-115000/unrestricted/etd.pdf.
Full textCarden, Charles Warren. "Cotton Response to 1-Methylcyclopropene Under Different Light Regimes and Growth Stages: Lint Yield and Yield Components." 2010. http://hdl.handle.net/1969.1/ETD-TAMU-2010-08-8336.
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