Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: 

RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 43
Primeira ... 123 ... Última
Imagem não selecionada

Imprime registro no formato completo
Effects of variety and plant spacing on weight, surface and yield of tobacco leaf (K326 and 347 Var.) CIGR Journal
Azadbakht, Mohsen; Ghajarjazi, Ehsan; Kiapei, Ali; Jafari, Hassan; Salehi, Ebrahim; Pishgar, Reza.
Tobacco is one of the important agricultural and industrial products which plays a crucial role in economics and income of the producing countries and tobacco’s leaves are actually used commercially. In this study, the effects of two tobacco varieties K326 and 347 in three plant spacing of 30, 40, and 50 cm (with density of 33333, 25000 and 20000 plants/ha) on physical properties and weight of tobacco leaves are discussed. The results of variance analysis showed that the ¬¬¬effects of variety and plant spacing on leaf surface in 5% level were significant. Interaction effect of these two factors wasn’t significant. Also results showed that independent and interaction effects of plant spacing and different varieties of tobacco on leaf weight were significant...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Tobacco; Plant spacing; Leaf; Weight; Yield.
Ano: 2016 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3646
Imagem não selecionada

Imprime registro no formato completo
Thermal Analysis of a New Model of a Tobacco Dryer CIGR Journal
de Carvalho, Ricardo Oliano; Machado, Miguel Borges; Milech, Fábio Brongar; Fuentes, Giovani Castro; da Luz, Carlos Alberto Silveira; Gadotti, Gizele Ingrid; da Luz, Maria Laura G. Silva.
The tobacco drying greenhouses, in general, are made without any coating that ensures thermal insulation and avoid heat losses, resulting in a large consumption of firewood during the drying of the tobacco. The study aims to develop an economically viable project to the producer, to avoid excessive heat loss through the walls and ceiling of a tobacco dryer, aimed at fuel economy, reduced drying time and reduces costs in process. For the current project, we considered changes of Brazilian theoretical mode, where we developed a thermal insulation system in a dryer, reaching satisfactory results, with a large reduction in energy losses and firewood consumption, resulting in a decrease in the costs of the proceedings in general. Thus, began for the development...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Tobacco; Dryer; Insulation..
Ano: 2015 URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/3105
Imagem não selecionada

Imprime registro no formato completo
The antioxidative defense system is involved in the premature senescence in transgenic tobacco (Nicotiana tabacum NC89) Biol. Res.
Liu,Yu; Wang,Lu; Liu,Heng; Zhao,Rongrong; Liu,Bin; Fu,Quanjuan; Zhang,Yuanhu.
BACKGROUND: α-Farnesene is a volatile sesquiterpene synthesized by the plant mevalonate (MVA) pathway through the action of α-farnesene synthase. The α-farnesene synthase 1 (MdAFS1) gene was isolated from apple peel (var. white winterpearmain), and transformed into tobacco (Nicotiana tabacum NC89). The transgenic plants had faster stem elongation during vegetative growth and earlier flowering than wild type (WT). Our studies focused on the transgenic tobacco phenotype. RESULTS: The levels of chlorophyll and soluble protein decreased and a lower seed biomass and reduced net photosynthetic rate (Pn) in transgenic plants. Reactive oxygen species (ROS) such as hydrogen peroxide (H2O2) and superoxide radicals (O2._) had higher levels...
Tipo: Journal article Palavras-chave: Tobacco; Senescence; Transcriptome; Reactive oxygen species (ROS).
Ano: 2016 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-97602016000100030
Imagem não selecionada

Imprime registro no formato completo
Biology of Corecoris dentiventris Berg, 1884 (Hemiptera, Coreidae) in tobacco culture (Nicotiana tabacum) BJB
CALDAS,B.-H. C.; REDAELLI,L. R.; DIEFENBACH,L. M. G..
Corecoris dentiventris Berg, 1884 (HEM., Coreidae) represents a pest in the tobacco culture in Southern Brazil. Nymphs and adults cause the wilting and twisting of the tobacco leaves due to their sucking habit. There are very few works about this species and these are restricted to concise description of the adult morphology, records of host plants and enumeration of injuries. The present investigation aims to study the life cycle of this bug. The experiment was carried out in a tobacco culture (Virginia type, var. K 326) implanted in the experimental area of the Departamento de Fitossanidade of the Universidade Federal do Rio Grande do Sul, in Porto Alegre, RS. The life cycle was studied in field conditions, in nylon cages, from egg clusters oviposited by...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Corecoris dentiventris; Life cycle; Tobacco.
Ano: 2000 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0034-71082000000100020
Imagem não selecionada

Imprime registro no formato completo
Biomass smoke COPD has less tomographic abnormalities but worse hypoxemia compared with tobacco COPD BJMBR
Meneghini,A.C.; Koenigkam-Santos,M.; Pereira,M.C.; Tonidandel,P.R.; Terra-Filho,J.; Cunha,F.Q.; Menezes,M.B. de; Vianna,E.O..
Special attention has emerged towards biomass smoke-induced chronic obstructive pulmonary disease (COPD), providing new knowledge for prevention and therapeutic approach of non-smoker COPD patients. However, the understanding of biomass smoke COPD is still limited and somewhat controversial. The aim of the present study was to compare COPD exclusively caused by tobacco smoking with COPD exclusively caused by environmental or occupational exposures. For this cross-sectional study, COPD patients were recruited from outpatient clinics and formed two groups: non-smoker COPD group (n=16) with exposure to biomass smoke who did not smoke cigarette and tobacco smoker COPD group (n=15) with people who did not report biomass smoke exposure. Subjects underwent...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Chronic obstructive pulmonary disease; Biomass; Tobacco.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2019000500601
Imagem não selecionada

Imprime registro no formato completo
Effect of smoking habits on sleep BJMBR
Conway,S.G.; Roizenblatt,S.S.; Palombini,L.; Castro,L.S.; Bittencourt,L.R.A.; Silva,R.S.; Tufik,S..
To evaluate the effect of smoking habits on sleep, data from 1492 adults referred to the Sleep Institute were accessed and divided into 3 categories of smoking status: current, former and non-smokers. Categories of pack-years (<15 and ≥15) defined smoking severity. The association of smoking status and smoking severity with sleep was analyzed for sleep parameters, especially apnea and hypopnea index (AHI) ≥5, more than 5% of total sleep time (TST) spent with oxyhemoglobin saturation (SaO2) <90%, and arousal index. The arousal index was higher among current (21 ± 17) and former smokers (20 ± 17) than non-smokers (17 ± 15; P < 0.04). Former smokers had a higher percent of TST at SaO2 <90% than non-smokers (9 ± 18 vs 6 ± 13; P < 0.04). Former...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Smoking; Tobacco; Smoking cessation; Sleep; Sleep-disordered breathing.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2008000800014
Imagem não selecionada

Imprime registro no formato completo
Potential interactions of central nervous system drugs used in the elderly population BJPS
Morrone,Fernanda Bueno; Schroeter,Guilherme; Petitembert,Alessandra P.; Faggiani,Fabiana T.; De Carli,Geraldo Atillio.
OBJECTIVE: To describe the use of CNS drugs and to identify the most frequently observed potential drug interactions in the elderly living in Southern Brazil. METHODS: A population-based, transversal and observational study was carried out during 2006-2007. Four hundred and eighty elderly individuals of both genders were randomly recruited and interviewed. A validated pharmacotherapeutic questionnaire and the Micromedex® Healthcare Series were utilized to analyze potential drug interactions. A severity rating scale employing the categories of "mild", "moderate" and "severe" was used to describe the interactions. RESULTS: A population of elderly living in Southern Brazil was interviewed and 98 reported using CNS drugs, 74.5% female and 25.5% male. Out of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Elderly; Drug-Drug interactions; Central nervous system; Tobacco; Ethanol.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-82502009000200006
Imagem não selecionada

Imprime registro no formato completo
Cloning and sequence analysis of tomato cpDNA fragments: towards developing homologous chloroplast transformation vectors Braz. J. Plant Physiol.
Berger,Irving Joseph; Carraro,Dirce Maria; Bock,Ralph; Azevedo,Ricardo Antunes; Carrer,Helaine.
With the view of developing chloroplast transformation vectors based on homologous targeting regions for tomato (Lycopersicon esculentum L.), plastid DNA fragments of tomato cv. IAC-Santa Clara were cloned and analyzed. Isolation and cloning of PstI/SalI chloroplast fragments into the pBlueScript vectors yielded the plasmids pIJB1 and pIJB2 with cpDNA fragments of 8.6 kb and 6.4 kb, respectively. DNA sequencing and computer analyses revealed that the tomato sequences cloned display from 93 to 100 % of identity to the respective fragments in tobacco, which is more pronounced in coding regions. The intergenic spacers are somewhat less conserved suggesting that evolutionary divergences occurred mainly in these putative non-coding regions. The most remarkable...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Lycopersicon esculentum; Nicotiana tabacum; Chloroplast DNA; Plastid transformation; Plastome; Tobacco; Tomato.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202005000200007
Imagem não selecionada

Imprime registro no formato completo
Complementing firewood with alternative energy sources in Rio Pardo Watershed, Brazil Ciência Rural
Dessbesell,Luana; Farias,Jorge Antonio de; Roesch,Fábio.
ABSTRACT: Wood is the primary energy source for grains and Tobacco drying in the Rio Pardo Watershed (RPW). The amount of firewood produced in the RPW is not enough to supply the demand. Recently, an automatized supply system was introduced in the region enabling the use of sawdust and pellets. In this context, this study aims to compare firewood, sawdust and pellets as energy sources for Tobacco curing in air-forced curing systems. Energetic density was used to estimate the biomass consumption in Tobacco curing. The consumption of biomass is lower for pellet, followed by firewood and sawdust. Pellets and sawdust could complement firewood in the region; however, research is necessary to ascertain the economic feasibility.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Tobacco; Pellet; Sawdust; Energetic density.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782017000900301
Imagem não selecionada

Imprime registro no formato completo
Expression of the antibody 14D9 in Nicotiana tabacum hairy roots Electron. J. Biotechnol.
Martínez,Carolina; Petruccelli,Silvana; Giulietti,Ana María; Alvarez,María Alejandra.
Nicotiana tabacum hairy roots that express the antibody 14D9 were established. The 14D9 antibody yield obtained after 20 days of culture was 5.95 &#956;g 14D9ml-1. The addition of the reticulum endoplasmic retention sequence KDEL demonstrated a positive effect over the intracellular 14D9 amounts with a yield increase up to 20.82 µg ml-1. DMSO increased the antibody amount in the biomass from 20.00 to 64.03 µg ml-1 while PVP (at 1.5 gl-1) and gelatine (at 5.0 gl-1) increased total 14D9 amounts in the culture medium to 25 µg and 14 µg respectively
Tipo: Journal article Palavras-chave: Catalytic antibodies; In vitro cultures; Molecular farming; Recombinant antibodies; Tobacco.
Ano: 2005 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582005000200006
Imagem não selecionada

Imprime registro no formato completo
Hydrological validation of High Wide Ridges as a soil conservation technology applied to tobacco crop. Infoteca-e
DENARDIN, J. E.; MARCON, G. P.; FAGANELLO, A.; LEMAINSKI, J.; BACK, A. J.; JUNQUEIRA, B. R.; OLIVEIRA, V. B. de.
High Wide Ridge Soil Management is a conservation practice associated with the no-tillage, reduced tillage, and conventional tillage systems, usual in small farms in southern Brazil. Integrated with winter grain or ground cover crops such as wheat (Triticum aestivum), rye (Secale cereale), black oats (Avena strigosa) and white oats (Avena sativa), millet (Pennisetum glaucum L.), Sudan grass (Sorghum sudanense), sorghum (Sorghum spp.), mucuna (Mucuna spp.), and brachiaria (Brachiaria spp.), high wide ridge is being used for tobacco (Nicotiana tabacum), soybean (Glycine max L.), maize (Zea mays), and beans (Phaseolus vulgaris) during the spring and summer seasons. The benefits expected from this technology, related to the performance of the tobacco crop,...
Tipo: Folhetos Palavras-chave: Infiltration of water in the soil; Intense rain; Return period; Direct planting system; High wide ridges; Camalhão; Soil conservation; Soil; Tobacco.
Ano: 2021 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1131755
Imagem não selecionada

Imprime registro no formato completo
Comparison of risk factors among blood donors, volunteers and replacement individuals, infected or not by hepatitis C virus J. Venom. Anim. Toxins incl. Trop. Dis.
Felippe,MJDB; Meira,DA.
Hepatitis C is transmitted primarily parenterally by contaminated blood and is often associated with: intravenous drug abuse, invasive procedures, blood transfusions, acupuncture, tattooing, and alcohol and tobacco use. This study aimed to quantify and evaluate the risk factors among blood donors, volunteer blood donors and replacement individuals, infected or not by the C virus. The main transmission routes of C virus were identified in 55 men and 25 women (GI) monitored by the Ambulatory Unit of the Department of Tropical Diseases, Botucatu Medical School, and in 24 men and 26 women (GII), all active blood donors at the Bauru State Hospital Transfusional Agency. Both groups were similar in: tobacco and alcohol consumption, sexual behavior, tattooing and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Hepatitis C; Risk factors; Blood donors; Injectable drugs; Tobacco; Alcohol; Marijuana; Sexual behavior.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1678-91992009000100010
Imagem não selecionada

Imprime registro no formato completo
Policy Reform in the Tobacco Industry: Producers Adapt to a Changing Market AgEcon
Foreman, Linda F.; McBride, William D..
The Fair and Equitable Tobacco Reform Act of 2004 eliminated tobacco quotas and tobacco price supports and allowed producers to plant any amount or type of tobacco regardless of geographic location. The authors found that flue-cured tobacco producers made greater adjustments to their operations after the buyout than did burley tobacco producers. Flue-cured tobacco producers were more likely to increase tobacco acres per farm, pushing up the tobacco acreage per farm at a faster rate compared with burley tobacco producers. Flue-cured producers also were more likely to invest in their tobacco enterprises and invested more per farm after 2004. As a result of increased acreage, tobacco operations became more sensitive to changes in labor costs. With over 75...
Tipo: Report Palavras-chave: Tobacco; Structural change; Farm adjustments; Adaptations; Agricultural Resources Management Survey (ARMS) Acknowledgments; Agricultural and Food Policy; Crop Production/Industries; Farm Management.
Ano: 2011 URL: http://purl.umn.edu/117969
Imagem não selecionada

Imprime registro no formato completo
The Economics of Smallholder Households in Tobacco and Cotton Growing Areas of the Zambezi Valley of Mozambique AgEcon
Benfica, Rui M.S.; Zandamela, Julieta; Miguel, Arlindo; de Sousa, Natercia.
Ministry of Agriculture and Rural Development, Directorate of Economics, Republic of Mozambique
Tipo: Working or Discussion Paper Palavras-chave: Food security; Food policy; Tobacco; Cotton; Household; Zambezi Valley; Mozambique; Crop Production/Industries; Q18.
Ano: 2005 URL: http://purl.umn.edu/56064
Imagem não selecionada

Imprime registro no formato completo
What Does the “Family Smoking Prevention and Tobacco Control Act” Mean to Tobacco Growers? AgEcon
Tiller, Kelly; Starnes, Jane H.; Feleke, Shiferaw T..
The “Family Smoking Prevention and Tobacco Control Act” was signed into law on June 22, 2009. The bill grants the Federal Food and Drug Administration (FDA) an authority to regulate the manufacturing and marketing of tobacco products. Tobacco leaf is not subject to the regulation. As a result, it is not apparent what it does mean to tobacco growers. However, since the demand for tobacco is in large part determined by the demand for cigarettes, a change in demand for cigarettes due to the FDA regulation can affect the demand for tobacco. This paper explores the economic welfare consequences of the bill to tobacco growers.
Tipo: Conference Paper or Presentation Palavras-chave: Policy; Tobacco; Family Smoking Prevention and Tobacco Control Act; Agricultural and Food Policy; Crop Production/Industries; Demand and Price Analysis; Farm Management.
Ano: 2010 URL: http://purl.umn.edu/56448
Imagem não selecionada

Imprime registro no formato completo
A PRIMER for Selecting New Enterprises for Your Farm AgEcon
Woods, Timothy A.; Isaacs, Steven G..
This publication is designed to help producers evaluate new enterprises for their farms of family businesses. It is based on a set of worksheets to help evaluate Profitability, Resource requirements, Information needs, Marketing decisions, Enthusiasm for, and the Risk associated with a new enterprise.
Tipo: Report Palavras-chave: Alternatives; Marketing; Business plan; Diversification; Tobacco; Agribusiness; Marketing.
Ano: 2000 URL: http://purl.umn.edu/42316
Imagem não selecionada

Imprime registro no formato completo
Post-Buyout Structural Change in the Peanut and Tobacco Sectors AgEcon
Dohlman, Erik; Foreman, Linda F.; Da Pra, Michelle.
When longstanding marketing quota systems were eliminated (“bought out”) in 2002 for peanuts and 2004 for tobacco, producers lost quota-related price supports and other quota system protections, and were exposed more directly to a market-oriented system. The nature of the peanut and tobacco marketing quota programs, the structure and magnitude of the buyouts, and market dynamics influenced the ensuing structural changes that occurred at the farm, regional, and aggregate market levels. Analysis of USDA’s Agricultural Resource Management Surveys (ARMS) on peanut and tobacco producers over a multi-year timeframe provides insights on, and a basis for comparing and contrasting the buyout impacts along multiple dimensions. Notable developments include a...
Tipo: Conference Paper or Presentation Palavras-chave: Peanuts; Tobacco; Policy; Marketing quotas; Buyouts; Agricultural and Food Policy.
Ano: 2010 URL: http://purl.umn.edu/56355
Imagem não selecionada

Imprime registro no formato completo
Sugar-Sweetened Beverage Taxation as Public Health Policy -Lessons from Tobacco AgEcon
Chaloupka, Frank J.; Powell, Lisa M.; Chriqui, Jamie F..
Tipo: Journal Article Palavras-chave: Taxation; Tobacco; Obesity; Agricultural and Food Policy; Food Consumption/Nutrition/Food Safety; Health Economics and Policy; I18.
Ano: 2011 URL: http://purl.umn.edu/117065
Imagem não selecionada

Imprime registro no formato completo
HOPES AND FEARS: THE NEW WORLD TRADE NEGOTIATIONS AND SOUTHERN AGRICULTURE AgEcon
Marchant, Mary A..
Understanding the impacts of the Uruguay Round (UR) Agreement on southern commodities serves as a starting point to assess the potential impacts of the next global trade negotiations in terms of hope (expanding export markets) and fear (new competition). Key issues examined include whether or not the UR Agreement resulted in new markets or new competition for key southern commodities-cotton, poultry, tobacco, and rice. For new markets, export data were analyzed to determine if exports increased since the passage of the UR Agreement in 1994. Also, countries that are leading world importers of these southern commodities were identified and data analyzed to determine whether the U.S. is exporting to these top markets. Alternatively, to assess whether the...
Tipo: Journal Article Palavras-chave: Agricultural trade; Cotton; General Agreement on Tariffs and Trade (GATT); International trade; Poultry; Rice; The South; Tobacco; Uruguay Round Agreements; World Trade Organization (WTO); International Relations/Trade.
Ano: 1999 URL: http://purl.umn.edu/15367
Imagem não selecionada

Imprime registro no formato completo
TESTING FOR MONOPSONY POWER IN MULTIPLE INPUT MARKETS: A NONPARAMETRIC APPROACH WITH APPLICATION TO CIGARETTE MANUFACTURING AgEcon
Raper, Kellie Curry; Love, H. Alan.
Monopsony power by cigarette manufacturers in procuring domestic and imported tobacco is investigated using a nonparametric method previously developed by Love and Shumway. Their test is extended to assess monopsony market power in multiple input markets. Results indicate that cigarette manufacturers exert significant monopsony power in the domestic tobacco market and exert little monopsony power in the international tobacco market.
Tipo: Working or Discussion Paper Palavras-chave: Market power; Tobacco; Nonparametric; Monopsony.; Agribusiness; L1..
Ano: 1998 URL: http://purl.umn.edu/23966
Registros recuperados: 43
Primeira ... 123 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional