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1
Bagley, Christopher A. "Controlling Tobacco Mosaic Virus in Tobacco through Resistance." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/30911.
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Tobacco mosaic virus (TMV) infects all classes of tobacco (Nicotiana tabacum L.) and causes losses worldwide. The N gene is the most effective means of controlling TMV; however, this gene is associated with reduced yield and quality in flue-cured tobacco. The mode of inheritance of TMV resistance was determined in two tobacco introductions (TI) from N. tabacum germplasm, both of which produced a hypersensitive response when inoculated with TMV. Inheritance studies with TI 1504 and TI 1473 indicate that a single dominant gene controls resistance. The gene governing resistance in TI 1504 is allelic to the N gene in NC 567. The gene providing resistance in TI 1473 is not allelic to the N gene, providing a potentially new source of resistance. Currently, plant breeders must rely on the N gene. The N gene is used in the heterozygous state to help overcome poor agronomic effects associated with homozygous resistance; however, systemic movement of TMV is occasionally seen in resistant plants. A TMV
susceptible inbred (K 326), a resistant inbred (NC 567), and three resistant hybrids (NC 297, RGH4, and Speight H2O) were inoculated with TMV at transplanting, layby, and topping using different inoculation methods. Plant parts were tested for viral presence and biological activity. Viral movement into all plant parts was observed in K 326. No systemic movement was evident in the plant parts of NC 567, while virus did move into the corollas, pistils, late season sucker growth, and roots of the resistant hybrids showing systemic necrosis.Master of Science
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Alcock, S. "Tobacco chemistry." Thesis, University of Nottingham, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.356015.
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Beeler, Isadora. "Tobacco hands." Thesis, Boston University, 1994. https://hdl.handle.net/2144/37121.
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Thesis (M.A.)--Boston UniversityPLEASE NOTE: Boston University Libraries did not receive an Authorization To Manage form for this thesis or dissertation. It is therefore not openly accessible, though it may be available by request. If you are the author or principal advisor of this work and would like to request open access for it, please contact us at open-help@bu.edu. Thank you.
2031-01-01
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Pau, Siu-yuen, and 鮑兆源. "Reducing tobacco consumption: the tobacco control policy in Hong Kong revisited." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2011. http://hub.hku.hk/bib/B4678200X.
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Beekwilder, Kristen M. "The Inheritance of Resistance to Tobacco Mosaic Virus in Tobacco Introductions." Thesis, Virginia Tech, 1999. http://hdl.handle.net/10919/31726.
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Thirty-one tobacco introductions that were reported to display either a local lesion or a symptomless reaction to infection with tobacco mosaic virus (TMV) were screened for reaction to the virus (Chaplin and Gooding, 1969). Ten tobacco introductions (TI), TI 203, TI 407, TI 438, TI 450, TI 692, TI 1203, TI 1459, TI 1462, TI 1467, and TI 1500 were randomly chosen for further study to characterize their resistance to tobacco mosaic virus (TMV). Each TI line was crossed with susceptible cultivar K 326 to determine the mode of inheritance of resistance to TMV. The F2 progeny of TIs 1459, 1462, and 1500 segregated in a 3 local lesion:1 mosaic ratio, indicating that the gene governing resistance in these three TI lines was a single, dominant trait. The F2 progeny of TIs 203, 407, 438, 450, 692, 1203, and 1467 failed to segregate, only mosaic plants were observed. This would indicate that the gene(s) controlling resistance to TMV in these lines would not provide resistance for plant breeders to incorporate into a breeding program. Each TI line was also crossed with local lesion cultivar NC 567, which contains the N gene, in order to determine if the gene(s) governing resistance in the TI lines was allelic to the N gene in NC 567. The F2 progeny of TIs 1459 and 1462 did not segregate. All progeny displayed the local lesion reaction to TMV indicating that the gene governing resistance in these two lines is allelic to the N gene. The F2 progeny of the cross between TI 1500 and NC 567 segregated in a 15 local lesion: 1 mosaic ratio, which indicates that the gene controlling resistance in TI 1500 is not allelic to the N gene. When crossed with NC 567, the F2 progeny of TIs 407, 438 and 1467, segregated in a 3 local lesion: 1 mosaic ratio. No symptomless plants were observed. There was also segregation in the F2 progeny of the crosses between NC 567 and TIs 203, 450, 692, and 1203. However, the segregation was in no discernible ratio. Once again the F2 progeny of the crosses either displayed a local lesion or mosaic reaction and no symptomless progeny were observed. This would again indicate that the symptomless TI lines do no provide heritable resistance to TMV and therefore are not acceptable as an alternative source of resistance to TMV for the plant breeder. Tobacco introduction 1500 should be investigated further because a single, dominant trait that is not allelic to the N gene governs resistance to TMV in this line.Master of Science
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Lacefield, Brian. "Contribution of Tobacco to Agriculture Receipts in Four Prominent Tobacco Producing States." TopSCHOLAR®, 1998. http://digitalcommons.wku.edu/theses/342.
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Agriculture receipt data were obtained from USDA Agriculture Statistics on four prominent tobacco producing states-North Carolina, Kentucky, Tennessee, and Virginia--for the period of 1946 through 1995. The data were adjusted for inflation according to the Consumer Price Index and averaged for five-year periods beginning with 1946-1950 and continuing through 1991-1995. There were four objectives of the study. The first objective was to compare these states for annual agriculture receipts, crop receipts, and livestock receipts. State total agriculture receipts ranged from 1.8 to 3.2 billion dollars in 1946-50 and from 1.4 to 4.1 billion dollars in 1991-95. For total agriculture receipt, rankings were as follows: North Carolina highest, Kentucky intermediate, and Tennessee and Virginia lowest and about equal. State rankings for crop and livestock receipts were the same as those for total agriculture receipts except the North Carolina ranking for livestock receipts went from lowest to highest among the states during the period of study. In Kentucky and Tennessee, crop and livestock contributions were approximately equally throughout the study. Crop receipts exceeded livestock receipts in NC until the 1980s, while in Virginia livestock receipts consistently exceeded crop receipts. The second objective was to determine the contribution of tobacco receipts and their relationships to the receipts of other agriculture commodities. Average state tobacco receipts in dollars ranged from 254 million to 1.8 billion dollars in 1946-50 and from 129 to 723 million dollars in 1991-95. State rankings for tobacco receipts were as follows: North Carolina highest, Kentucky intermediate, and Tennessee and Virginia lowest and approximately equal. Tobacco receipts (dollars) for Kentucky, Tennessee, and Virginia were relatively consistent over the 50-year period; however, the tobacco receipts for North Carolina decreased from 1.8 billion to 723 million dollars during the period. When tobacco receipts were considered as a component of total agriculture receipts, the tobacco contribution decreased from 54% to 18% in North Carolina and from 35% to 26% in Kentucky, whereas the proportion remained rather consistent in the 10% to 15% range for Tennessee and Virginia. When tobacco receipts were expressed as a percentage of crop receipts, the percentages were highest in Kentucky, intermediate in North Carolina, and lowest in Virginia and Tennessee. Correlations between tobacco and total agriculture receipts were positive and significant for each state except North Carolina. The third objective of the study was to examine the contribution of specific crop and livestock enterprises to agriculture receipts during the 1981-1995 period. Total agriculture receipts increased in North Carolina but decreased in the other states. The increase in North Carolina resulted from increases in livestock receipts (collectively), swine, poultry, vegetables, and other crops. The decrease in Kentucky, Tennessee, and Virginia resulted from decreases in livestock (collectively), dairy, swine, crops (collectively), fruit and tobacco receipts. North Carolina agriculture income has increased and reflects more contribution from livestock (collectively), swine, poultry and less from tobacco. Kentucky agriculture income has decreased and reflects decreases from livestock and crops. Kentucky agriculture receipts are more dependent upon tobacco than are the receipts in the other states. The fourth objective was to relate diversification patterns from the other states to Kentucky's present status and future opportunities. In 1995, tobacco contributions to agriculture receipts were North Carolina (15%), Kentucky (21%), Tennessee (11%), and Virginia (8%); poultry contributions were North Carolina (29%), Kentucky (4%), Tennessee (10%), and Virginia (31%). Although considered minor contributors at present, hay and other crops (greenhouse and nursery plants) show promise for further diversity of Kentucky agriculture.
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Naqvi, Iman. "The War on Tobacco: The Impact of Advertising Bans on Tobacco Consumption." Scholarship @ Claremont, 2013. http://scholarship.claremont.edu/cmc_theses/732.
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ABSTRACT
This study provides an empirical analysis of the effect of tobacco marketing regulation on unit sales, in order to evaluate the effectiveness these laws in the United States. The analysis did not find a significant effect of tobacco advertising expenditure on unit sales. Examination of advertising expenditure revealed that tobacco companies substituted banned forms of advertising for other marketing strategies, leading to little reduction in total advertising expenditure and a limited effect on sales. Furthermore, it found an unexpected positive relationship between the 1971 Public Health Cigarette Smoking Act and tobacco consumption; the ban on advertising and promotion actually increased sales by over 88 billion units. Additional empirical evidence is provided from studies performed by Fight Ordinances and Restrictions to Control and Eliminate Smoking (FORCES) and Saffer and Chaloupka that show correspondingly inconclusive results. The paper then discusses several policy implications and subsequent recommendations that follow from these results.
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Leung, Yuk-ho, and 梁毓浩. "Effectiveness of tobacco taxation compared with smoking ban in reducing tobacco consumption." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2010. http://hub.hku.hk/bib/B4517295X.
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Nakkash, Rima. "Tobacco industry strategies in Lebanon : an analysis of internal tobacco industry documents." Thesis, London School of Hygiene and Tropical Medicine (University of London), 2007. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.498136.
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Lawrence, W. A. "Microinjection of tobacco protoplasts." Thesis, University of East Anglia, 1986. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.372559.
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Read, Melvyn D. "The politics of tobacco." Thesis, University of Essex, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.278766.
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Ziepfel, Chad. "The U.S. Tobacco Program." Miami University Honors Theses / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=muhonors1111688572.
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Richmond, Mitchell D. "CHEMICAL TOPPING BURLEY TOBACCO." UKnowledge, 2018. https://uknowledge.uky.edu/pss_etds/103.
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The act of topping tobacco (Nicotiana tabacum L.) involves the removal of the terminal bud or inflorescence of the tobacco plant. This practice ordinarily is accomplished by manually removing the top of each tobacco plant in an entire field which is labor intensive and costly. Chemical topping utilizes sucker control products to inhibit the terminal bud and axillary bud growth without manually removing the top of the tobacco plant. There were several research objectives in order to determine the utility of a chemical topping system: 1) determine if burley tobacco could be chemically topped with currently registered suckercide products while maintaining control of subsequent sucker growth; 2) compare chemical topping to manual topping for yield and leaf quality; 3) identify burley tobacco varieties that are better suited for chemical topping systems; 4) determine the optimum plant growth stage at which chemical topping treatments should be applied; and 5) identify genes that are differentially expressed following suckercide applications. To pursue our objectives, studies were initiated investigating the optimum timing of application, ideal variety maturity, and efficacy of suckercide applications using combinations of maleic hydrazide (MH), butralin, and fatty alcohols (FA). The terminal bud was not well controlled with FA or butralin alone nor was acceptable sucker control or total yield achieved. Our data suggest that chemically topping burley tobacco with a tank mixture of MH and a local systemic may be a suitable alternative to manual topping, as total yield and leaf quality grade index were not significantly different and total TSNA and MH residues were not significantly higher compared to manual topping. The 10% button and 50% button application timings were best suited for chemical topping practices. Treatments that targeted the 10% bloom stage did not completely halt flower development, but all application timings resulted in excellent sucker control. Medium and late maturity burley varieties were found to be suitable for chemical topping methods; however, timing the suckercide application may be less difficult in later maturing varieties. Chemically topping burley tobacco at 10 to 50% button stages with a tank mixture of MH and a local systemic suckercide was found to be a suitable alternative to manual topping, and would potentially result in labor savings for burley tobacco growers. Expression of genes related to phytohormones, meristem development, cell division, DNA repair and recombination were affected following MH treatment, which likely leads to the inhibition of apical and axillary meristem development.
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Jin, Yue. "Ending Tobacco Sales in Pharmacies: A Comprehensive Evaluation on Tobacco-free Pharmacy Laws." The Ohio State University, 2015. http://rave.ohiolink.edu/etdc/view?acc_num=osu1437563357.
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Hayes, Alec J. "Identification and genetic characterization of tobacco accessions possessing resistance to tobacco cyst nematode." Thesis, This resource online, 1995. http://scholar.lib.vt.edu/theses/available/etd-06102009-063409/.
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Tah, Tapashree Schoelz James E. "Chloroplast GFP expression in tobacco plants agroinfiltrated with tobacco mosaic virus based vectors." Diss., Columbia, Mo. : University of Missouri--Columbia, 2009. http://hdl.handle.net/10355/6604.
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Title from PDF of title page (University of Missouri--Columbia, viewed on Feb 19, 2010). The entire thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file; a non-technical public abstract appears in the public.pdf file. Thesis advisor: Dr. James E. Schoelz. Includes bibliographical references.
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Wilkinson, Celeste T. "Quantitative Analysis of Tobacco-Specific Nitrosamines and their Precursor Alkaloids in Tobacco Extracts." VCU Scholars Compass, 2017. https://scholarscompass.vcu.edu/etd/5172.
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Tobacco-specific nitrosamines (TSNA) are carcinogenic constituents derived from alkaloids in tobacco. Researchers are actively exploring several avenues to reduce TSNA levels in tobacco products like moist snuff tobacco. The focus of the research presented within is the quantitative analysis of TSNA in tobacco, specifically N’-nitrosonornicotine (NNN), 4-(methylnitrosamino)-1(3-pyridyl)-1-butanone (NNK), N’-nitrosoanatabine (NAT), and N’-nitrosoanabasine (NAB).
Tobacco alkaloids and nitrosamines in tobacco are currently analyzed by different instrumentation due to orders of magnitude difference in their concentrations, chromatographic separation challenges due to structural similarities, and similar mass fragmentation patterns. An analytical column using silica and 1,2-bis(siloxy)ethane hybrid particles of 1.7 µm size is the foundation of a chromatographic separation of NNN, NNK, NAT, NAB, nicotine, nornicotine, anatabine, and anabasine. This is the first rapid and robust quantitative method for the TSNA and their alkaloid precursors using high pH mobile phase conditions with ultra-performance liquid chromatography tandem mass spectrometry (UPLC-MS/MS). The suitability of the method is demonstrated by its application to the analysis of reference tobacco materials for cigarettes and moist snuff. In addition, a novel TSNA analytical method was developed using TSNA-specific molecularly imprinted polymers (MIP) as the selective extraction element from tobacco extract. The affinity mechanisms between MIP and TSNA were found to have extensive cross-reactivity to structurally similar alkaloids present in tobacco extract. TSNA-specific MIP was demonstrated to have stronger retention for the alkaloids than for the TSNA substrate. The MIP-TSNA interaction was optimized to create the first analytical method to quantify underivatized NNN and NNK from tobacco extracts by HPLC-UV.
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Carlsson, Noomi. "A Zero-vision for Children’s Tobacco Smoke Exposure : Tobacco prevention in Child Health Care." Doctoral thesis, Linköpings universitet, Pediatrik, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-79331.
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Adverse health effects in children caused by environmental tobacco smoke (ETS) are well known. Children are primarily exposed by their parents’ smoking in their homes. A comprehensive evidence base shows that parental smoking during pregnancy and ETS exposure in early childhood are associated with an increased risk for a range of adverse health problems. Child Health Care nurses, who meet nearly all families in Sweden with children aged 0-6 years, have thus an important role in tobacco preventive work in order to support parents in their ambitions to protect their children from ETS exposure. The overall aim of this thesis was to develop, test and evaluate a new model for tobacco preventive work in Child Health Care (CHC) with special focus on areas with a high prevalence of parental smoking. In a first step CHC nurses’ and parents’ views on tobacco preventive work were analysed in two studies based on questionnaires. The intervention was performed during the second step, based on the results from nurses’ and parents’ experience of the tobacco preventive work in CHC, and with methods from Quality Improvement. An “intervention bundle” was developed which included evidence based methods for prevention of ETS exposure, and four learning sessions for the nurses. The instrument “Smoking in Children’s Environment Test” (SiCET) included in the bundle was evaluated with focus group interviews with the CHC nurses who participated in the intervention. Two urine samples were analysed to measure cotinine levels in children which provide an estimate for ETS exposure. Parents’ answers from the SiCET questionnaire, measurements of cotinine, and data from the nurses’ log-books were used in the evaluation of the effects of the intervention. In areas with a high prevalence of parental smoking 22 nurses recruited 86 families of whom 72 took part for the entire one-year period of the intervention. The results showed that parents wanted to have information on the harmful effects tobacco smoke have on their children and how they can protect their children from ETS exposure. The nurses saw tobacco preventive work as important but they experienced difficulties to reach certain groups such as fathers, foreign-born parents, and those who are socio-economically disadvantaged. The SiCET instrument provided a basis for dialogue with parents. The main results from the intervention showed that ten parents (11%) quit smoking, thirty-two families (44%) decreased their cigarette consumption in the home, and fewer children were exposed to tobacco smoke. Consequently, more children showed levels of urinary cotinine less than 6 ng/ml (base-line n=43, follow up n=54; p=0.05). The total number of outdoor smokers did not change. Seven of the nurses (30%) had successful results in their areas with a decrease of smokers in families with a child of 8 months, from 20% in 2009 to 12% in 2011. The corresponding figures for the whole county as well as the country did not decrease during the same period. The sustainability of the intervention has to be followed and thus measures should be followed prospectively over time. The SiCET instrument was found useful and might be applicable in other arenas where children’s ETS exposure is discussed. The development of an instant cotinine test using dipsticks would make it possible to give parents immediate feedback on the effectiveness of taken protective actions. This could work as a pedagogic resource in the dialogue with parents.
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Lee, Sungkyu. "The tobacco industry in South Korea since market liberalisation : implications for strengthening tobacco control." Thesis, London School of Hygiene and Tropical Medicine (University of London), 2011. http://researchonline.lshtm.ac.uk/768502/.
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This research analyses transnational tobacco companies' (TTCs) broader strategies for market access and demand creation through understanding market liberalisation in South Korea's tobacco industry from the late 1980s in order to inform the strengthening of tobacco control policies within the country and other emerging markets. The research is mainly based on internal tobacco industry documents, made publicly available through litigation. Detailed analysis of industry documents related to South Korea has not been undertaken to date. Semistructured interviews and additional primary and secondary sources served as important supplementary data sources. The key finding of this research is that the market access strategies of TTCs, including direct and indirect lobbying on trade policies, were a response to South Korea's export-oriented economic development model and its negative attitude towards foreign investment. This was undertaken within the context of the transformation of the world trading system from the 1980s which created pressure on the country to open its market. After liberalisation, various aggressive marketing tactics to create demand for foreign brands were used by TTCs. The competition this engendered played a key role in the transformation of the Korean tobacco monopoly into a private, competitive business which emulated and refined the tactics used by TTCs. This, in turn, increased the extent and intensity of the aggressive marketing of tobacco products in Korea overall. Total volume of cigarette sales increased 25% as a result, making Korea the 8th largest tobacco market in the world by 1992, whilst smoking prevalence increased among young adults and females. The research concludes that a fuller understanding of TTCs' strategies for global expansion can be derived by locating them within the economic development models of specific countries or regions. Such analysis, in turn, offers important lessons for strengthening global tobacco control. Of foremost importance is the need for emerging markets to appropriately balance economic and public health policies when considering liberalisation. The South Korean experience also demonstrates that comprehensive tobacco control policies, as set out by the Framework Convention on Tobacco Control, must be implemented prior to any market liberalisation and strictly enforced within a competitive market environment.
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Karg, Saskia Ruth. "N-glycosylation engineering in tobacco /." Zürich : ETH, 2008. http://e-collection.ethbib.ethz.ch/show?type=diss&nr=17989.
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Nanwani, Shalini Suresh. "Environmental tobacco smoke and wellbeing." Thesis, Click to view the E-thesis via HKUTO, 2003. http://sunzi.lib.hku.hk/hkuto/record/B31971209.
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Woolcock, Bruce Wayne. "Genotoxicity of chewing tobacco samples." Thesis, University of British Columbia, 1985. http://hdl.handle.net/2429/26208.
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The intra-oral use of tobacco-containing mixtures plays an important aetiological role in the occurrence of oral cancers. In vitro genotoxicity assays may provide means for the rapid evaluation of factors contributing to or modulating this form of tobacco carcinogenesis. An essential requirement for an effective test system is the capability to detect the genotoxic effects of a variety of tobacco mixtures which are expected to differ in chemical composition. Freshly prepared aqueous extracts of four tobacco mixtures, locally available snuff and "chewing" tobacco, Khaini tobacco (India) and nass (Uzbekistan, USSR), were assayed for genotoxic activity in three different test systems: chromosome aberrations in Chinese hamster ovary cells, micronuclei in Chinese hamster ovary cells and unscheduled DNA synthesis in human fibroblasts. A DNA repair inhibition test was included as a complement to the unscheduled DNA synthesis assay. All four tobacco extracts were found to contain direct acting agents capable of inducing chromosome aberrations and micronuclei formation in Chinese hamster ovary cells. Catalase was found to suppress the clastogenic activity of the chewing and Khaini tobaccos, implicating H₂O₂-mediated production of chromosome damage. The genotoxic activities of snuff and nass did not appear to be dependent on the generation of H₂O₂. Only the chewing tobacco initiated unscheduled DNA synthesis in human fibroblasts. All tobacco extracts reduced the levels of UV initiated unscheduled DNA synthesis, indicating the extracts exerted an inhibitory effect on DNA repair. The failure of the snuff, Khaini tobacco and nass to induce a demonstrable unscheduled DNA synthesis was interpreted to be a consequence of this inhibition. On the basis of these results it was concluded that the chromosome aberration and micronucleus tests in Chinese hamster ovary cells, but not the unscheduled DNA synthesis, appear to be suitable as test systems for the study of factors influencing oral tobacco carcinogenicity.Medicine, Faculty of
Pathology and Laboratory Medicine, Department of
Graduate
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Jiang, Zuodong. "ENGINEERING TRITERPENE METABOLISM IN TOBACCO." UKnowledge, 2015. http://uknowledge.uky.edu/pss_etds/58.
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Terpenes comprise a large diverse class of natural products and many of them attract interest because of their physiological function, therapeutic and industrial values. Triterpene oils including squalene (C30), botrycococcene (C30) and their methylated derivatives (C31-C37) generated by the green algae Botryococcus braunii race B, which have recently received significant attention because of their utility for advanced biofuels. However, the slow growth habit of B. braunii makes it impractical as a robust biofuel production system. In this thesis, we firstly evaluated the potential of generating high levels of triterpene (C30) production in tobacco plants by diverting carbon flux from cytosolic MVA pathway or plastidic MEP pathway by overexpressing avian farnesyl diphosphate synthase along with triterpene synthase targeted to the cytoplasm or the chloroplast of cells. Up to 1,000 µg/g fresh weight of squalene and 544 µg/g fresh weight of botryococcene was achieved in our transgenic plants with this metabolism direct to the chloroplasts, which is about approximately 100-times greater than that accumulating in the plants engineered for cytosolic production. To test if methylated triterpenes can be produced in tobacco, we also engineered triterpene methyltransferases (TMTs) into wild type plants and transgenic tobacco plants selected for high level triterpene accumulation. We observed that up to 91% of the total triterpene content was converted to methylated forms (C31, C32) by targeting the TMTs to the chloroplasts of transgenic plants, whereas only 4-14% of total triterpenes were methylated when TMTs were directed to the cytoplasm. Select transgenic lines were growing in field studies from 2011 to 2014 to evaluate their physiological performance under field conditions. Surprisingly, the field studies suggested that the growth and agronomic performance of the transgenic lines accumulating squalene were not compromised, while those accumulating high levels of botryococcene were only 72%-76% as tall, had about 59%-75% of the leaf area, and about 55%-75% of the biomass as wild type plants. Yet, these transgenic plants had photosynthetic capacity equal to the wild type plants.
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Wise, Mary Heath. "Tobacco Use and Attachment Style." Digital Commons @ East Tennessee State University, 2015. https://dc.etsu.edu/honors/277.
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Tobacco has been recognized as the number one cause of preventable death in America and results in almost 5.2 million years of potential life lost each year. The use of tobacco products is highly correlated with pulmonary disease, cardiovascular disease, and other forms of chronic illness in America. Within the last ten years new tobacco products have been trending in the tobacco market such as the water pipe/hookah and e-cigarettes. With e-cigarettes and other newer forms of tobacco on the rise, it is important to look at the underlying factors for using all kinds of tobacco products as a means of prevention. Certain adult attachment styles (secure, preoccupied, dismissing-avoidant, and fearful-avoidant) in emotionally meaningful relationships could be indicators for physical illness, mental illness, and even addiction. The researcher implemented a study that investigated whether or not there is a relationship between tobacco use and attachment style. Based on a university-wide survey that was sent out at East Tennessee State University with 522 participants, demographic data revealed 68.5% (n=358) did not currently use tobacco products. However, of those who did currently use tobacco products 54.5% (n=90) were male, 84.8% (n=140) were undergraduate students, and 66.7% (n=110) were between the ages of 18-25. For individuals who used tobacco 23.5% (n=38) were in the secure attachment group, 27.8% (n=45) were in the dismissing-avoidant attachment group, 30.2% (n=49) were in the fearful-avoidant attachment group, and 18.5% (n=30) were in the preoccupied attachment group. Chi Square analysis demonstrated that attachment style was significantly (p < 0.01) different between tobacco users and non-users. For anxiety, r=0.00209, which was weak. For avoidance, r=0.18875, which was slightly higher than the effect size for anxiety, but it was still weak. Considering that there was significance but the effect size was weak, the recommendation is that the study be repeated with a broader sample.
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Reed, Thomas David. "Quantification of tobacco aphid, Myzus nicotianae Blackman, injury to flue-cured tobacco, Nicotiana tabacum (L.) /." This resource online, 1990. http://scholar.lib.vt.edu/theses/available/etd-07282008-135337/.
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Campbell, Robert Charles James. "Speciation of metals and metalloids in tobacco and tobacco smoke : implications for health and regulation." Thesis, University of St Andrews, 2014. http://hdl.handle.net/10023/5728.
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Some metals and metalloids make significant contributions to the harmful effects of tobacco consumption although understanding the mechanisms involved in toxicity is hampered by the lack of information on their chemical and valence species, both in tobacco and in smoke. This research addresses the speciation of the metals and metalloids most frequently implicated, particularly those elements that exist in nature in multiple valence states, namely arsenic (As) and chromium (Cr), there being considerable differences in toxicity with oxidation state. A strategy was devised to overcome some of the problems that have thwarted earlier attempts at speciation. Firstly tobacco plants were cultivated under controlled conditions in compost burdened with high levels of metals and metalloids resulting in leaf with up to 250 µg g⁻¹ As, although Cr uptake was less successful. Secondly valence speciation even at the exceptionally low concentrations of As and Cr in smoke from unburdened tobacco was achieved with XANES analysis using the exceptionally bright Diamond synchrotron source. This revealed that combustion of tobacco has a marked effect on valence speciation with As(III), the reduced form of As, dominating (and persisting) in condensate of tobacco smoke while ash is dominated by the oxidised form, As(V). Chromium also appears to be present in smoke mainly as reduced Cr(III) species. HPLC-ICPMS analysis of arsenic indicates the dominance of inorganic over organic species (~4:1). Other metals were investigated in less detail. These findings establish that arsenic is present in smoke in its most toxic form and represents a significant risk to health. Conversely smokers appear to be exposed to the less harmful species of chromium. These results support a recent WHO report that includes As but not Cr in a list of four metals and metalloids recommended for regulation in crops and commercial products in the interests of public health.
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Reed, T. David. "Quantification of tobacco aphid, Myzus nicotianae Blackman, injury to flue-cured tobacco, Nicotiana tabacum (L.)." Diss., Virginia Tech, 1990. http://hdl.handle.net/10919/38956.
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A two year study was conducted to measure the impact of tobacco aphid, Myzus nicotianae Blackman, colonization and cumulative aphid-days on flue-cured tobacco, Nicotiana tabacum (L.). The objectives of the study included quantifying the response of tobacco production variables, cured leaf quality, and cured leaf chemical analysis to the level of cumulative aphid-days. Aphid populations and tobacco plant responses were recorded on an individual plant basis. A gradient in cumulative aphid-days was obtained through the use of temporally distributed aphid colonizations and selective insecticide use.
Tobacco aphid populations resulted in yield reductions as great as 22 and 27% in 1988 and 1989, respectively, while gross economic returns were reduced 27 and 32% in the respective years. The responses of tobacco production variables were characterized by a decreasing negative slope; therefore, incremental losses were greatest at low levels of cumulative aphid-days. Regression models were developed to describe crop production responses as a function of cumulative aphiddays. The quality of the cured leaves (grade index) was also responsive to the level of cumulative aphid-days. Changes in both tobacco grade group and quality within a given group occurred with increasing cumulative aphid-days. The occurrence of nondescript tobacco was associated with large aphid populations. The chemical quality of the cured tobacco was also influenced by cumulative aphid-days. The total alkaloid content followed a linear function, while the level of reducing sugars was a nonlinear relationship with cumulative aphid-days. The study also reported on the disproportionate impact of aphid populations upon the within-plant responses of tobacco.
A study was conducted to evaluate the impact of tobacco aphid management using eight different action thresholds. Comparison of the two most commonly recommended treatment thresholds (10 and 20% of plants with 50 or more aphids per leaf) revealed no significant differences in the number of remedial treatments required or the yield and gross economic returns. However, use of the latter threshold resulted in a delay of approximately one week for the first treatment and the retreatment interval.Ph. D.
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Carter, SM. "Tobacco industry communication strategies : an Australian analysis of internal tobacco industry documents and other sources." Phd thesis, University of Sydney, 2005. http://hdl.handle.net/2123/7893.
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Veeranki, Sreenivas Phanikumar. "Advancing Global Tobacco Control: Exploring Worldwide Youth Attitudes and Behaviors toward Tobacco Use and Control." Digital Commons @ East Tennessee State University, 2012. https://dc.etsu.edu/etd/1223.
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Tobacco use continues to be the leading cause of preventable death in the world. The disproportionate increase in tobacco use in low- and middle-income countries needs immediate attention. Many smokers begin smoking as adolescents and are most likely to become permanent smokers. Moreover, youth are highly targeted by tobacco industry strategies. However, a gap exists in literature to understand worldwide youth tobacco use and control. The purpose of this study is to 1) identify factors that influence never-smoking youths‟ smoking susceptibility, 2) explore characteristics that influence youth exposure to environmental tobacco smoke (ETS) and 3) to delineate key determinants of youth support for smoke-free policies (SFPs).
Data related to worldwide youth tobacco use was obtained from the Global Youth Tobacco Survey for the years 1999-2008. Simple and multiple logistic regression analyses were conducted, after the sample was weighted for design effect, nonresponse patterns and poststratification. Unadjusted and adjusted odds ratios along with 95% confidence intervals were reported.
Around 14% of never-smoking youth were susceptible to smoking worldwide. Around 40% and 50% youth were exposed to ETS inside and outside the home respectively, and 78% supported SPFs globally. Parental and peer smoking was strongly associated with smoking susceptibility in never-smoking youth [AOR 2.63, 95% CI 2.43 to 2.84], and youth exposure to ETS inside [AOR 5.09, 95% CI 4.84 to 5.35] and outside [AOR 2.51, 95% CI 2.39 to 2.63] the home, while anti-smoking school education was negatively associated. Youth having knowledge about smoking harm [AOR 2.37, 95% CI 2.22 to 2.54] supported SFPs, while youth exposed to tobacco industry promotion [AOR 0.83, 95% CI 0.78 to 0.89] did not support.
The study highlighted a number of modifiable factors that can be used for augmenting global tobacco control in youth. Well-executed anti-smoking campaigns, parental and peer education, inclusion of anti-tobacco education in school curricula, comprehensive SFPs, and comprehensive ban on tobacco industry strategies are important approaches to prevent tobacco use and advance global tobacco control in youth.
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Farnworth, Michael G. "Three essays in health economics /." Thesis, *McMaster only, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape3/PQDD_0033/NQ66265.pdf.
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Wu, Xiaoxuan, and 吴小轩. "The association between changes in tobacco taxation and consumption of tobacco in adults : a systematic review." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hdl.handle.net/10722/193829.
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Objectives: To investigate the association between tobacco taxation and changes in tobacco consumption among adults. To synthesis the evidence regarding differential effect of tax on smoking in adults. From this review, some policy suggestions would be obtained to enhance the effectiveness of tobacco control.
Methods and Results: Relevant studies published between 2008 and 2013 were searched and identified through PubMed, ISI web of knowledge and economics databases of IDEAS with combination of key words. Studies regarding the association between tobacco taxation and changes of smoking prevalence were included in this review. 162 articles were identified, 8 studies were found to be relevant with in this systematic review. All the studies were conducted in different areas with different sample size, study design, and outcome measurements. The results from these studies presented the negative association between tobacco taxation and smoking prevalence among adults. Based on the previous studies analyzed above, the reduction of tobacco use was varied by different prices increase according to the observational studies using the statistic analyze or modeling.
Conclusion: Tobacco taxation has been proved to the most effectiveness approach to lower the prevalence of tobacco consumption among populations, which could reduce the adverse health outcome to relieve disease burden and increase government revenues as well. The tobacco tax policy should based on their national conditions, otherwise, the effectiveness of reduction tobacco consumption would decrease due to unsuitable implementation.published_or_final_version
Medicine
Master
Master of Public Health
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Ranzetta, Kirk Edwards. "The changing paradigm of agricultural knowledge the policy, memory, and culture of the Maryland tobacco buyout /." Access to citation, abstract and download form provided by ProQuest Information and Learning Company; downloadable PDF file 0.98 Mb., 160 p, 2006. http://gateway.proquest.com/openurl?url_ver=Z39.88-2004&res_dat=xri:pqdiss&rft_val_fmt=info:ofi/fmt:kev:mtx:dissertation&rft_dat=xri:pqdiss:3220642.
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Fastus, Karola [Verfasser]. "Natural products from tobacco (Nicotiana Tabacum) and thermally generated taste molecules in tobacco smoke / Karola Fastus." München : Verlag Dr. Hut, 2014. http://d-nb.info/105932976X/34.
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Talley, Michael Brandon. "Examining the Impact of Development, Tobacco Taxation, and Tobacco Prices on Global Adult Male Smoking Prevalence." Digital Archive @ GSU, 2010. http://digitalarchive.gsu.edu/iph_theses/140.
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Tobacco use is the leading cause of preventable death in the world. Nevertheless, the global tobacco epidemic continues to spread throughout much of the world, particularly in developing countries. Previous research suggests that smoking status may be associated with a variety of social, economic, and cultural factors. This study examines the impact of development, tobacco taxation, and tobacco prices on estimates of global adult male smoking prevalence. Data for this study was obtained from the United Nations’ Human Development Indices: A Statistical Update, 2008 and the World Health Organization’s Report on the Global Tobacco Epidemic, 2009: Implementing Smoke-free Environments. Global adult male smoking prevalence was significantly associated with development, tobacco taxation, and tobacco prices. More rigorous examination of the link between male smoking prevalence and development, tobacco taxation, and tobacco prices is needed to strengthen tobacco control policies and interventions in developing and developed countries.
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Ellis, Madeleine D. "Quantitative analysis of individual flue-cured tobacco seed tissues reveals Tobacco mosaic virus infection in embryos." Thesis, Virginia Tech, 2019. http://hdl.handle.net/10919/101554.
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Tobacco mosaic virus (TMV) is an extensively studied RNA virus that reduces quality and yield in commercially grown tobacco (Nicotiana tabacum L.). The virus is transmitted mechanically, although infections have been associated with contaminated seeds with the seed coat being the source of virus. Thus, TMV transmission is said to be seedborne (as opposed to true seed transmission where the embryo is infected). The objective of this study was to identify TMV concentrations in the three components of an individual tobacco seed: seed coat (SC), endosperm (ED), and embryo (EM). Six hundred seed from TMV infected K 326 flue-cured cultivar tobacco plants were carefully dissected into the three components. Total RNA was extracted from each sample and synthesized into cDNA for analysis. A quantitative real-time PCR (RT-qPCR) assay was developed to quantify viral titers in each component, while endpoint PCR confirmed RT- qPCR results and established a threshold viral cycle (Ct) value. Endpoint PCR results revealed viral accumulation in all three components of a tobacco seed. The highest concentration of TMV was in the SC, followed by ED and EM. A similar viral concentration gradient was observed in each individual tobacco seed from all three experimental plants. This is the first detection of TMV in tobacco embryos and suggests the virus can be seed transmitted.Master of Science
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Wu, Hao. "Tobacco smoking & Ming-Ching society." Click to view the E-thesis via HKUTO, 1985. http://sunzi.lib.hku.hk/hkuto/record/B31948674.
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Larsson, Matz. "Secondary exposure to inhaled tobacco products." Doctoral thesis, Örebro universitet, Hälsoakademin, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:oru:diva-2519.
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Även andra individer än rökaren kan påverkas av tobaksrökning. Syftet med denna avhandling var att undersöka några sådana effekter. Studierna omfattar såväl passiv rökning som exponering under graviditet. Mer specifikt handlar studierna om: · Exponering för passiv rökning under barndomen och samband med luftvägssymtom och allergi senare i livet. · Passiv rökning i vuxen ålder och samband med luftvägssymtom. · Exponering hos serveringspersonal och effekter av lagstiftning mot tobaksrökning. · Rökning under graviditet och kontroll och koordination av handrörelser hos barn. Passiv rökning i barndomen hade en koppling till ökad risk för astma och allergi. Passiv rökning hos vuxna var kopplat till förekomst av andnings- och luftvägssymtom på ett dosberoende vis. Besvär i andningsvägar och slemhinnor minskade avsevärt hos icke rökande serveringspersonal efter rökförbudet på restauranger som infördes den 1 juni 2005. Mammans rökning under graviditet var kopplad till nedsatt handkontroll och handkoordination hos avkomman. Sambandet var tydligast för vänsterhanden och pojkarnas handfunktion påverkades betydligt mer än flickornas. Fynden stödjer att rökning under graviditet kan påverka nervsystemets utveckling i negativ riktning. Ett flertal oönskade effekter kan således drabba dem som är nära rökare under någon period i livet och resultaten understryker vikten av att förebygga sådan exponering.Secondary exposure to inhaled tobacco products can influence the human body in a variety of ways. The aim of this thesis was to investigate a variety of health effects of secondary exposure to inhaled tobacco products. The research encompassed both airborne and in utero exposures. Specific investigations included: · Childhood exposure to environmental tobacco smoke (ETS) and associations with respiratory symptoms and allergic sensitization. · Adult exposure to ETS and exacerbation of respiratory symptoms · Workplace exposure to ETS and associations with respiratory symptoms · The influence of smoke-free workplace legislation on respiratory symptoms · In utero exposure and associations with physical control and coordination at age 11 years Environmental tobacco smoke during childhood was shown to be associated with an increased risk of asthma and allergic sensitization. Environmental tobacco smoke exposure in adult non-smokers was associated with a dose-dependent increase in the prevalence of respiratory symptoms. The frequency of respiratory and sensory symptoms in hospitality workers declined substantially in non-smokers following the introduction of smoke-free legislation. Maternal smoking during pregnancy was associated with poorer physical control and coordination among offspring, particularly in the left – usually non-dominant- hand and most pronounced in boys, consistent with an adverse influence on neurological development. These findings help to characterize several adverse outcomes associated with secondary exposure to inhaled tobacco products and emphasise the importance of preventing such exposures.
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Stewart, Carol. "Agricultural restructuring and Ontario tobacco production." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1997. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/mq21102.pdf.
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Khan, Muhammad Sarwar. "Tobacco chloroplast transformation using microprojectile bombardment." Thesis, University of Cambridge, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.313892.
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Thangavelu, Madan. "The actin gene family of tobacco." Thesis, University of Cambridge, 1989. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.335212.
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Bogdanovica, Ilze. "Tobacco control in the European Union." Thesis, University of Nottingham, 2012. http://eprints.nottingham.ac.uk/13798/.
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Smoking is the leading avoidable cause of mortality and serious disability worldwide. The prevalence of smoking varies greatly between the 27 European Union (EU) Member States as does the implementation of tobacco control policies. The main aims of this thesis were to investigate the extent of the variation between and the reliability of measures of smoking prevalence, the relation between prevalence and tobacco control policy implementation, the country characteristics associated with policy implementation, and a detailed analysis of the association between cigarette prices and smoking prevalence.
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McRobbie, Hayden James. "Tobacco Withdrawal Syndrome and its Modification." Thesis, Queen Mary, University of London, 2008. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.504549.
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Smokers experience a number of symptoms when they stop, which together compose the tobacco withdrawal syndrome. Most current treatments for smokers exert their effect by ameliorating withdrawal discomfort. The thesis had two objectives. It aimed to enhance our ~nderstanding of the tobacco withdrawal symptomatology and investigated the potential of two treatments in alleviating specific tobacco withdrawal symptoms (TWS). Urges to smoke, irritability, depression, difficulty concentrating, restlessness, insomnia, and hunger are well-documented TWS. The first part of the thesis maps two littleexplored physical symptoms. Two prospective studies examined the occurrence of mouth ulcers and constipation in samples of abstaining smokers (N=585 and N=514) over four weeks. Forty-six percent developed mouth ulcers and 8% rated these as severe. Constipation was reported by 17% of abstinent smokers and 9% who were symptom free at baseline became very or extremely constipated. The studies reported in the second part of the thesis concerned two promising treatments that specifically address TWS. To examine the mechanism of action of rapid smoking (RS) 100 smokers were randomised to a single session of RS or a control procedure imillediately prior to quitting. Compared to the control RS . significantly reduced urges to smoke during the first week of abstinence. To see whether glucose can provide acute withdrawal relief in smokers receiving treatment, 75 one-week abstainers randomly received glucose (12g) or placebo tablets. TWS were measured before, and at 5-minute intervals for 20 minutes after, taking the tablets. Glucose had no effect on urges to smoke, but reduced irritability and hunger in smokers using bupropion. In summary, the thesis has documented that mouth ulcers and constipation are valid TWS and suggest that glucose and RS have promise in modifying TWS. On their own they are unlikely to have substantial effects on cessation; but may be useful when added to contemporary treatments.
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Wu, Hao, and 吳昊. "Tobacco smoking & Ming-Ching society." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 1985. http://hub.hku.hk/bib/B31948674.
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Tang, Cheuk-wai Anthony, and 鄧卓諱. "Tobacco tax policy in Hong Kong." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B50257584.
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Franco, Pérez Iván Mauricio. "Venta de Servicios British American Tobacco." Thesis, Universidad de las Américas Puebla, 2013. http://catarina.udlap.mx/u_dl_a/tales/documentos/lni/franco_p_i/.
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Venta de Servicios a BAT (British American Tobacco)
T-Systems, división del Grupo alemán Deutsche Telekom AG, es proveedor líder en
servicios de Tecnología de Información y Comunicaciones (ICT), enfocado a negocios con
clientes empresariales que incluyen medianas y grandes empresas, sector público y
corporaciones multinacionales. A nivel mundial, la empresa cuenta con 47,600 empleados en
más de 20 países. Los servicios de T-Systems engloban todos los niveles de la cadena de
valor de ICT a desarrollar, operar, crear, comercializar y diseñar cualquier tipo de
soluciones en materia de tecnologías de la información así como el procesamiento y
administración de los datos. (T-Systems, 2013)
La compañía inició operaciones como Gedas México en abril de 1995 en la ciudad
de Puebla, México. El 1 de abril del 2006, T-Systems adquiere Gedas, filial del grupo VW,
con lo que amplía su negocio principal como proveedor de servicios de ICT para las
Industrias de Manufactura y Automotriz. Actualmente, T-Systems México cuenta con más
de 1,400 empleados altamente calificados y con oficinas en la ciudad de México y Puebla.
(T-Systems, 2013)
La compañía actualmente trabaja con BAT (British American Tobacco) en diversos
países (Singapur, Australia (outsourcing), Región de Europa EMEA) y quisiera ofrecer sus
servicios a la subsidiaria de Malasia ya que opera de forma similar y de igual manera tienen
las mismas necesidades. Anteriormente se tuvo un primer acercamiento con malasia en
marzo de este año en curso, en el cual se implementó el servicio de t-systems, Som@Sap
del cual se crea una copia de la herramienta Cosima, la cual se utiliza en Europa.
Básicamente no se ha tenido un buen acercamiento para la realización de la venta
debido al enfoque que se le ha dado, es por eso que buscamos hacer un estudio sobre la
cultura en Malasia para poder acercarnos e interactuar de manera eficaz y así canalizar la
información a través de una estrategia de marketing B2B, creando un catálogo para dar a
conocer el portafolio de servicios con los cuales cuenta la compañía y que son esenciales
para la subsidiaria de BAT en Australia y Malasia y presentar una propuesta de valor
mostrando los beneficios y limitaciones de las herramientas.
Uno de los problemas principales del área es el enfoque de mercadotecnia que
utilizan, este no es el adecuado para acercarse a los clientes. Esto debido a que no es el
público en general al que se está dirigiendo la propuesta de servicios que ofrece la empresa,
faltando así un enfoque de mercadotecnia B2B (business to business). Cabe remarcar que el
área de global production planning es relativamente joven, con tan solo tres años de
operaciones continuas. Otro problema latiente es que los la falta de conocimiento
intercultural entre los integrantes del equipo en México ya que ninguna de las personas
cuenta con conocimientos de cómo hacer negocios con otras culturas. Para poder dar
solución a esto, se necesita crear un portafolio de servicios B2B (business to business) y
orientar al equipo de trabajo en como negociar y comunicarse con la cultura malaya.
Se espera que con el nuevo enfoque que se le dé al equipo de trabajo de México tanto
de marketing como de conocimiento sobre la cultura malaya, lo haga tener una visión
diferente sobre el mundo de los negocios y poner más atención a la comunicación con otras
culturas tratando de conocerlas antes de tener un primer acercamiento. Con el catalogo que
se crea se espera poder ser utilizado para todas las empresas que tengan interés en conocer
los servicios que ofrece T-Systems México.
El llevar a cabo la implementación del proyecto es todo un proceso debido a que
requiere de tiempo para poder ser aprobado y comenzar a integrarlo entre los miembros del
equipo. Por principio empezaremos por presentarle la propuesta final del proyecto al jefe
directo, encargado del proyecto, para obtener una realimentación y poder realizar
modificaciones necesarias tanto de contenido, como de presentación. Después de eso se
haremos una cita con el jefe de global production planning para presentar el proyecto y
plantear su implementación. despues, se creara una presentación en power point la cual se
presentara ante el equipo de trabajo con el propósito de hacerles llegar la información de
manera detallada y con esto poder observar la predisposición del equipo ante los cambios
que se realizaran dentro del área, comentarios y retroalimentación serán bien recibidos con
el fin de mejorar o tomar temas que no se hayan tomado en cuenta. El siguiente paso es
contactar al equipo de diseño gráfico de la empresa, localizado en la ciudad de México,
plantearles el proyecto y ver la carga de trabajo o tiempo con el que dispongan, de esta
manera proseguiremos a mandar información para que realicen un catálogo con los
servicios que se quieren ofertar a British American Tobacco, el tiempo de espera que
sugeriremos será de 10 días para el desarrollo de esto. Mientras tanto se creara un
documento escrito informativo sobre el comportamiento de la cultura malaya en el
ambiente de negocios el cual se repartirá entre los integrantes del equipo de trabajo en las
sesiones de trabajo. Es necesario apartar salas de junta dentro de la empresa y dividir al
equipo en cuatro secciones de cuatro personas para trabajar con ellos en dos sesiones de
una hora cada una, esto se realizara para ver las dudas que surjan sobre el documento que se
les haya entregado y practicar situaciones similares a las que se pudieran enfrentar al
momento de negociar con los malayos. Lo último será mandar una propuesta escrita de
servicios por parte de T-systems hacia BAT (British American Tobacco) Malasia
adjuntando el catalogo creado con el fin de esperar una respuesta positiva.
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Davey, P. J. "Clay tobacco pipe studies, 1975-1990." Thesis, University of Liverpool, 1990. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.433591.
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Millen, D. Leslie C. "The recovery of nicotine from tobacco." Thesis, Queen's University Belfast, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.356893.
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Wei, Wenbin. "Promoter trapping in tobacco and Arabidopsis." Thesis, University of Leicester, 1996. http://hdl.handle.net/2381/35367.
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A promoter trapping system based on the promoter trap vector pDeltaGUSBin19 was studied for the identification and isolation of developmentally regulated plant genes. pDeltaGUSBin19 contained a promoterless gusA gene and a nos promoter-driven nptII gene. The previously unknown regions of pDeltaGUSBin19 were sequenced. A method of high frequency transformation of Arabidopsis thaliana by Agrobacterium-tumefaciens was developed. The T-DNA of pDeltaGUSBin19 was introduced into tobacco and Arabidopsis to generate a large number of transformed lines. The levels and patterns of gusA gene activation in diverse organs and cell types of transgenic plants were analysed. Line atvt1 exhibited GUS fusion activity in the tapetum and vascular tissues. It contained a single copy of the T-DNA and the gusA gene fusion was transcribed as a fusion transcript. Wild-type genomic and cDNA clones corresponding to the tagged gene were isolated using a molecular probe generated by IPCR of genomic sequence flanking the T-DNA. The native mRNA was approximately 4.4 kb. The foil length cDNA of this gene was cloned, sequenced and analysed. It encoded a putative nucleic acid helicase, designated HVT1 (Helicase in Vascular tissue and Tapetum). Of a predicted 1291 amino acid residues, HVT1 is homologous to the Drosophila MALELESS, human RNA helicase A and bovine nuclear DNA helicase proteins, and represents the first identified member of a new subgroup within the mle group of the DEAH protein family. Low stringency genomic Southern blot analysis indicates there exists another structurally related gene in Arabidopsis. The value of promoter trapping as a complement to other approaches of gene isolation and possible function of the HVT1 protein is discussed.
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Jerrell, Scottie Lee. "Strip-Tillage Production Systems for Tobacco." Thesis, Virginia Tech, 2001. http://hdl.handle.net/10919/33132.
Full textAbstract:
Conservation tillage production systems for flue-cured tobacco (Nicotiana tabacum L.) have been studied for many years. Inadequate chemical weed control and lack of acceptable pesticide and fertilizer application resulted in consistently lower yields and inferior cured leaf quality. The development of new conservation tillage equipment, improved methods of fertilizer application, and new herbicides, have resulted in a renewed interest in conservation tillage labeled for tobacco. This research investigated management practices to address slow early season growth characteristic of strip-tillage tobacco production. Objectives of the first study were to evaluate the methods of starter fertilizer application and determine the optimal rate. A transplant water treatment (11 kg ha-1) and 3 rates (11, 22, and 45 kg ha-1) of injected 9-45-15 (N:P2O5:K2O) water soluble starter fertilizer were evaluated for early season plant growth and time of topping. Starter fertilizer treatments increased tobacco root weight
by 22% and leaf area up to 41%. Earlier topping was observed as a result of starter fertilizer with 23 and 6% more plants topped during the initial topping date in 1999 and 2000, respectively. Starter fertilizer did not consistently increase the yield of either strip-tillage or conventional tillage tobacco.
The objectives of the second study were to compare the use of raised beds with flat-planting and investigate cover crop residue management techniques. Residue management treatments minimized residue within the strip-tilled area with an early hooded spray application (strip-killed) of a burndown herbicide as opposed to the traditional broadcast burndown application. The use of raised beds for strip-tillage production of tobacco showed no clear benefit when compared to flat-planting. Strip-tillage plots were similar to conventional tillage for cured leaf quality and yield. Early season strip-kill burndown herbicide applications proved beneficial in reducing difficulties incorporating residue into the strip-tilled area thus improving the quality of the prepared seed bed.
This research has added to the present knowledge regarding strip-tillage tobacco production, and refined necessary cultural practices. Transplant starter fertilizer is recommended to overcome the typical slow early season growth characteristic of strip-tilled tobacco. However, increased rates (greater than 11 kg ha-1) or under-row injection of the material had no added benefit. The research also demonstrated that the use of raised beds should not be considered a necessary practice with the use of a strip-till implement that incorporates under-row subsoil tillage. This research has demonstrated that tobacco yields and quality comparable to conventional tillage can be realized using strip-tillage production techniques.Master of Science
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Burnakova, V. "Sustainable development strategy for tobacco industry." Thesis, Sumy State University, 2020. https://essuir.sumdu.edu.ua/handle/123456789/81009.
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Дослідження присвячене питанням сталого розвитку та стратегії розвитку тютюнової промисловості.Исследование посвящено вопросам устойчивого развития и стратегии развития табачной промышленности.
The research is devoted to the issues of sustainable development and development strategy of the tobacco industry.