Literatura científica selecionada sobre o tema "Sugar indust"
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Artigos de revistas sobre o assunto "Sugar indust"
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Sarwar, Muhammad, Warda Muzaffar e Waqas Raza Arshad. "EVALUATION OF PROMISING AND COMMERCIAL SUGARCANE CLONES AT DIFFERENT LOCATIONS IN THAL AND SOUTHERN PUNJAB". Pakistan Sugar Journal 34, n.º 3 (8 de janeiro de 2020): 16–22. http://dx.doi.org/10.35380/sugar.034.03.0148.
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Topographical areas better adapted for sugar cane cultivation must be identified and preserved, for this study Indus valley river delta in South Punjab represents promising features for prosperous sugarcane cultivation (lower water pumping costs due to higher water tables, sugarcane being flood resistant crop in Pakistan. Eight sugarcane varieties and eight promising clones were grown on different locations in Punjab at farmer’s field using RCBD with three replications. The objective of this study is to evaluate varieties under different ecological zones. These clones were tested for their proficiency at four different locations during 2018-19. The “Thal” and Southern Punjab viz; 142/TDA Lalazar Layyah, Indus Sugar mills Rajanpur, Ashraf Sugar Mills Bahawalpur and Adam Sugar Mills Chishtian. The data on germination %, tillers / plants, Number of mill able canes, canes yield tones/ ha and commercial cane sugar (CCS) were recorded during the course of study. It is obvious from pooled mean of four locations that cane yield of clone S2002-US-133 gave 84.13 % higher cane yield as compared the check variety CPF 248 as far as CCS% is concerned, sugarcane clones S200-US-633 and S200-US-133 gave the higher sugar recovery that is 15.31 % & 15.23 % respectively more than check variety. Whereas S200-US-658 and HSF240 have the lowest CCS% 1.22 & 1.14 % less than check.
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Dr.S.A.NAYAKAWADI, Dr S. A. NAYAKAWADI. "Impact of Sugar Industry Environment on Erythrocyte Sedimentation Rate of Sugar Industry Workers". International Journal of Scientific Research 3, n.º 7 (1 de junho de 2012): 515–16. http://dx.doi.org/10.15373/22778179/july2014/163.
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Dr. B Vijaya, Dr B. Vijaya, e Sangashetty Kanteppa Shetkar. "Cost Management in Sugar Industry". International Journal of Scientific Research 2, n.º 12 (1 de junho de 2012): 77–79. http://dx.doi.org/10.15373/22778179/dec2013/24.
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RAO, DR M. VENKATESWARA. "Problems of Indian Sugar Industry". Paripex - Indian Journal Of Research 3, n.º 1 (15 de janeiro de 2012): 126–28. http://dx.doi.org/10.15373/22501991/jan2014/38.
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VERGARA, W. R. H., J. S. YAMANARI e F. A. BARBOSA. "GESTÃO DA QUALIDADE: REDUÇÃO DE CUSTOS EM UMA USINA SUCROENERGÉTICA". Revista SODEBRAS 14, n.º 168 (dezembro de 2019): 48–52. http://dx.doi.org/10.29367/issn.1809-3957.14.2019.168.48.
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Raj, L. Praveen, e B. Stalin. "Optimized Design of a Bagasse Dryer System for Sugar Industry". Bonfring International Journal of Industrial Engineering and Management Science 6, n.º 4 (31 de outubro de 2016): 115–19. http://dx.doi.org/10.9756/bijiems.7536.
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Singh, Dr Kuldeep, Meera Bai Meera Bai e Dr Satya Pal. "Management Rationale for Participative Management: A case of Haryana Sugar Industry". Indian Journal of Applied Research 4, n.º 8 (1 de outubro de 2011): 98–100. http://dx.doi.org/10.15373/2249555x/august2014/26.
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Dr. S.A.NAYAKAWADI, Dr S. A. NAYAKAWADI. "Assessment of Respiratory Stress in Work Place Environment of Sugar Industry". Indian Journal of Applied Research 4, n.º 7 (1 de outubro de 2011): 535–36. http://dx.doi.org/10.15373/2249555x/july2014/169.
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Limbani, Punit, e Prof Mitali Shah. "Impact of Sugar Industry Effluent on Nearby Water Body: A Review". International Journal of Trend in Scientific Research and Development Volume-2, Issue-2 (28 de fevereiro de 2018): 1456–59. http://dx.doi.org/10.31142/ijtsrd10729.
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M, Amjad. "A Perspective Review on Sugar Industry Wastes, Uses and Treatment Techniques". Open Access Journal of Waste Management & Xenobiotics 6, n.º 3 (14 de julho de 2023): 1–10. http://dx.doi.org/10.23880/oajwx-16000186.
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The increase in sugarcane production involves a proportional increase in sugar industry waste. As a result of such a growing trend, the sugar industry is observing severe environmental problems due to a lack of permanent solution for their waste management. Therefore, immediate consideration is needed to find suitable methods of waste management. The sugar industry waste and effluent are the main sources of environmental pollution and associated with health risks. In this paper, various sources of solids and liquids wastes from the sugar manufacturing industry are reviewed. Different effective and economical sugar industry wastewater treatment techniques are also discussed. The sources and uses of some waste like bagasse, bagasse fly ash, and pressmud have also been discussed.
Teses / dissertações sobre o assunto "Sugar indust"
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Denslow, David. "Sugar production in northeastern Brazil and Cuba, 1858-1908". New York : Garland, 1987. http://catalog.hathitrust.org/api/volumes/oclc/15549420.html.
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Sadique, Zafor. "Study of quality of work life in sugar industry in Bangladesh". Thesis, University of North Bengal, 2001. http://hdl.handle.net/123456789/232.
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van, Eyk Gregory Ryan. "Dietary Fat and Sugar Induce Obesity and Impair Glucose Tolerance in Prepubertal Pigs". Thesis, Virginia Tech, 2012. http://hdl.handle.net/10919/32892.
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A pig model of childhood obesity was used to study the effects of dietary energy on body adiposity, and blood parameters associated with impaired glucose clearance. Prepubertal female pigs weaned at 21 d of age were fed control (CON), refined sugar (SUG), fat (FAT), and sugar-fat (SUGFAT) diets in a completely randomized arrangement for 16 wk. Calories from fat were 8.9% for CON, 5.6% for SUG, 35.5% for FAT and 32.3% for SUGFAT. Calories from sugar were 36.0% for SUG and 30.7% for SUGFAT. Adding fat, sugar or both to diets increased (P < 0.003) calorie intake. Percentage body fat was higher (P < 0.0001) in all treatments compared to CON, and in SUGFAT and FAT compared to SUG. Ultrasound back fat depth was positively correlated (r2 = 0.909; P < 0.001) with percentage body fat and negatively (r = 0.912; P-value ) with percentage body protein. Area under the curve (AUC) in response to oral glucose tolerance at 14 wk was higher (P < 0.03) in FAT (+14.6%) and SUGFAT (+25.5%) pigs compared to CON. Glucose AUC from sugar-fed pigs was not different (P = 0.2) from fat alone-fed pigs. Adding sugar, fat, or their combination to diets increased (P < 0.008) blood glucose and decreased (P < 0.0009) plasma insulin AUC. These data show that inclusion of fat and refined sugar in pig diets increases body adiposity and impairs glucose homeostasis and suggests that the composition of calories consumed may have different effects than simply consumption of excess of calories.Master of Science
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Onpraphai, Thaworn, e n/a. "Information systems for regional sugar cane production forecasting and localised yield estimation: a Thailand perspective". University of Canberra. Resource, Environmental & Heritage Sciences, 2004. http://erl.canberra.edu.au./public/adt-AUC20060517.142422.
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Sugar is an important global agricultural commodity and a significant input to the
advanced industrialised world. Annual average global sugar production is around 120
million tonnes, with consumption around 118 million tonnes. Sugar is produced under
a broad range of climatic conditions in some 120 countries and is one of the most
heavily traded agricultural commodities (FAO, 2001). Plants produce sugar as a
storehouse of energy that is used as required. Approximately 70% of sugar is
produced from sugar cane while the remaining 30% is produced from sugar beet
(Sugar Knowledge International, 2001).
Thailand's cane and sugar industry is now one of the major sources of foreign income
for the country. The value of sugar exports (around 35 billion baht or AUD $1.5
billion per annum) ranks among the top ten exported commodities of the Thai
economy. Approximately 9.2% of annual global sugar production is exported from
Thailand (WTO, 2001).
The sugar industry is extremely complex and comprises individual links and
components in the supply and demand chain that are more delicately in balance than
with most other commodity based industries. Thailand's sugar production has been
characterized by greater extremes of variability than in most other sugar producing
countries. A unique combination of pests, disease, climate, soils, problems with plant
available moisture and the low technology basis of crop management has increased
production risk and uncertainty for the crop. Total tonnage of cane and sugar is
notoriously difficult to predict during the growing season and for a mature crop before
the harvest.
Accordingly, the focus of this research is on the development and testing of methods,
algorithms, procedures and output products for Sugar Cane Crop Forecasting and
Yield Mapping. The resulting spatial and temporal information tools have the potential
to provide the basis of a commercially deployable decision support system for
Thailand's sugar industry.
The scope of this thesis encompasses several levels within a geographical hierarchy of
scales; from regional, district, farm, and plot within a study area in northeastern
Thailand. Crop forecasting at regional level will reduce production risk uncertainty
while yield mapping and yield estimation at local, farm and plot scales will enable
productivity to be improved by identifying, diagnosing the cause of and reducing
yield variability.
The research has three main objectives. These are to:
Develop statistical analysis procedures and empirical algorithms expressing the
relationship between yield potential and spectral response of sugar cane yield as a
basis for mapping, monitoring, modeling, forecasting and management of sugar
production in Thailand.
Evaluate the validity of a technology based versus conventional approach to crop
forecasting and yield mapping, commencing with a series of testable null-hypotheses
and culminating in procedures to calibrate and validate empirical
models against verifiable production records. Outcomes are used to review and
evaluate existing and potential future approaches to regional crop forecasting,
localised yield mapping and yield estimation tools for operational use within
Thailand's sugar industry.
Identify, evaluate and establish performance benchmarks in relation to the
practicality, accuracy, timeliness, cost effectiveness and value proposition of a
satellite based versus conventional approach to crop forecasting and yield
mapping.
The methodology involved time series analysis of recorded sugar cane yields and
production outcomes paired with spectral response statistics of crops derived from
satellite imagery and seasonal rainfall records over a three year period within four
provinces, forty five component districts and 120 representative farms.
Spectral statistics were derived fiom raw multi-spectral satellite imagery (multitemporal
SPOT- VI at regional scale and Landsat 7 ETM+ imagery at local scale)
acquired during the 1999 to 2001 sugar cane seasons. Crop area and production
statistics at regional scale were compiled and furnished by the provincial sugar mill
and verified through government agencies within Thailand. Selective cutting at
sample sites within nominated fields owned by collaborating growers was undertaken
to validate localised differences in productivity and to facilitate yield variance
mapping.
Acquisition, processing, analysis and statistical modeling of remotely sensed satellite
spectral data, rainfall records and production outcomes were accomplished using an
empirical approach. Resulting crop production forecasting algorithms were
systematically evaluated for reliability by assessing accuracy, spatial and temporal
variability. Long term rainfall and district sugar cane yield and production records
were used to account for district and season specific differences between estimated
and recorded yields, to generate error probability functions and to improve the
accuracy and applicability of empirical models under more extreme conditions.
Limitations on finding and length of records constrained the number of seasons and
the area for which satellite imagery with contrasting levels of spatial and spectral
resolution could be acquired. The absence of verifiable long term production records
combined with limitations on the duration and area able to be covered by field trips
meant that time series analysis of paired data was necessarily constrained to a three
year period of record coinciding with the author's period of candidature. Accordingly,
although a comprehensive set of well correlated district and month specific yield
forecasting algorithms was able to be developed, temporal restrictions on data
availability constrained the extent to which they could be subjected to thorough
accuracy and reliability analysis and extended with confidence down to farm and field
scale.
A variety of approaches, using different parameter combinations and threshold values,
was used to combine individual districts and component farms into coherent groups to
overcome temporal data constraints and to generate more robust production
forecasting algorithms, albeit with slightly lower levels of apparent accuracy and
reliability. The procedures adopted to optimise these district groupings are
systematically explained. Component differences in terrain, biophysical conditions
and management approaches between district groupings are used to explain
differences in production outcomes and to account for apparent differences between
forecast versus actual yields between districts both within and between different
groups.
The outcomes of this research - particularly the data acquisition and analysis
procedures, empirical modeling, error assessment and adjustment techniques, and the
optimisation procedures used to facilitate grouping of districts - provide a practical
basis for the deployment of an operational sugar cane production forecasting and yield
mapping information system to facilitate planning and logistical management of
production, harvesting, transportation, processing, domestic marketing and export of
sugar from northeastern Thailand. At the local and farm level, yield maps and plot
based yield estimates will assist users to improve productivity by recognising,
identiwing and responding to potential causes of within and between field spatial
variability.
However, before such an information system can be confidently deployed, additional
resources will be required to obtain paired production records, spectral data fiom
satellite imagery and biophysical input data over a longer period to ensure that the
empirical models are operationally robust and to validate their accuracy under a wider
range of conditions by comparing forecasts with actual outcomes over larger areas
during the next few seasons.
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Kwadzo, G. T.-M. "Evaluation of the Ghana sugar rehabilitation project : An ex-post exercise". Thesis, University of Strathclyde, 1985. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.371963.
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De, Sa Nogueira David. "Voluntary cocaine or sugar intake induce neuroadaptations of the endocannabinoid system in reward-related brain regions". Thesis, Strasbourg, 2019. http://www.theses.fr/2019STRAJ091.
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Les troubles alimentaires et l’addiction sont deux pathologies complexes induisant des neuroadaptations à long terme. Dans ce contexte, nous avons étudié les altérations induites par la consommation volontaire de sucre ou de cocaïne dans les régions cérébrales associées à la récompense. Nous avons concentré nos recherches sur les systèmes endocannabinoïde et opioïde, car tous deux sont exprimés dans le système nerveux central et jouent un rôle crucial dans la prise de drogue et de nourriture. Dans l'ensemble, nos résultats mettent en évidence l'hippocampe comme une région cérébrale très impliqué après la prise volontaire de cocaïne. De plus, nos travaux indiquent que certains mécanismes épigénétiques régulent le système endocannabinoïde. Enfin, nous avons pu démontrer qu’une consommation excessive de sucre induit des adaptations transcriptionnelles similaires à celle induites par la cocaïne dans le noyau accumbens. Ainsi, ces résultats pourraient ouvrir la voie vers de nouvelles cibles thérapeutiques pour le traitement des troubles alimentaires ou comportements addictifsOccidental countries currently face an epidemic of obesity and related diseases. As eating disorders and drug addiction are both complex pathologies inducing long-term neuroadaptations, we investigated common alterations induced by either sugar or cocaine intake in reward-related brain regions. We focused our research on the endocannabinoid and opioid systems, as both systems are expressed in the central nervous system and play a crucial role in drug reward and food intake. Overall, our results highlight the hippocampus as a highly involved brain site following cocaine use. Moreover, our work sheds light on epigenetic mechanisms regulating the endocannabinoid system. More importantly, we demonstrate that a binge-like intake of sucrose induced similar transcriptional adaptations to that of voluntary cocaine intake in the nucleus accumbens. These findings may pave the way to new therapeutic targets for addictive behaviors
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Vesterberg, Iris, e Sofia Westerlund. "Hybridization with CSP in a Cuban sugar mill". Thesis, KTH, Energiteknik, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-233214.
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Kuba har i dagsläget ett högt beroende av importerad olja, för att tillgodose sin växande efterfrågan på elektricitet. Importen sker främst från Venezuela. Detta beroende gör Kuba känsligt för ändringar i oljepriser samt det politiska klimatet. Den nuvarande krisen i Venezuela har haft en betydande inverkan på Kubas elproduktion. Genom att utöka landets förnybara energikällor kan Kuba minska sitt beroende av andra länder och diversifiera sin energiförsörjning. Detta kommer även att leda till en positiv miljöpåverkan då landets CO 2-utsläpp minskar. Kubas geografiska läge har ideala förhållanden för förnyelsebar energigenerering, så som solkraft. Solkraft utvecklas konstant och innehåller en hög potential. Concentrating Solar Power (CSP) är en teknologi där speglar och/eller linser används för att koncentrera solljus till en liten yta som konverterar solljuset till värme. Denna värme kan sedan användas i termodynamiska cykler. Det finns två huvudsakliga problem med implementering av CSP på Kuba. För det första är CSP beroende av momentana väderförhållanden, vilket leder till en oregelbunden elproduktion. För det andra har CSP höga investeringskostnader. För att adressera dessa problem, är det möjligt att implementera CSP i ett redan existerande kraftverk med regelbunden energikälla, d.v.s. skapa ett hybridkraftverk. På så vis uppnås regelbunden elproduktion med signifikant lägre investeringskostnad. Ett sådant existerande kraftverk kan hittas hos många av Kubas sockerbruk. Den här studien undersöker möjligheten att implementera solkraft i sockerbruket Carlos Baliño, beläget i Villa Clara, Kuba. Fabriken är självförsörjande av elektricitet på årlig basis. De använder en Rankine-cykel för att generera el och processvärme som används i sockerframställningen. Bränslet som används är bagasse, en restprodukt efter att sockerjuicen pressats ut ur sockerrören. Fyra CSP-teknologier och tre implementeringslayouts undersöktes, vilket resulterade i att parabolic trough-teknologin och förvärmning av vatten ansågs vara de bästa alternativen för Kuba och Carlos Baliño. Vidare undersöktes två olika scenarier för CSP. Scenario 1 innefattar implementering av CSP i sockerbruket under rådande skick och Scenario 2 består av implementering av CSP efter en investering gjorts i en Condensing Extraction turbin (CEST). Resultatet visar att Carlos Baliño bör investera i CEST innan de implementerar CSP, det vill säga Scenario 2. Detta beror på att i scenario 1 är det inte möjligt att generera elektricitet utanför sockersäsongen, vilket leder till att en stor del av solpotentialen inte kan utnyttjas. Den maximala investeringskostnaden för scenario 1 är 3,7 MUSD, vilket inte är en realistisk kostnad. Den maximala investeringskostnaden för scenario 2 beror av tillgänglig bagasseimport och är 5,9 – 7,2 MUSD. Att investera i CSP rekommenderas ej om bagasseimporten är obegränsad. Givet att bagasseimporten är begränsad skulle CSP-implementeringen leda till en utökad elproduktion av 5,4 – 7,2 GWh/år, en årlig minskning av oljeanvändandet med 16 100 – 21 800 tunnor och minskade CO2-utsläpp med 12 00-16 00 ton årligen. Carlos Baliños ekonomiska resultat skulle öka med 0,5 MUSD/år och den kubanska statens med 0,7 – 0,9 MUSD/år. Framtida studier rekommenderas undersöka möjligheten till generering av el året runt vid Carlos Baliño utan en CEST, solkraftsefterfrågan på nationell nivå och potentiella utvecklingar av solkraft hos Carlos Baliño.Cuba is currently highly dependent on imported oil, mainly from Venezuela, to meet their growing electricity demand. This dependence makes Cuba sensitive to changes in oil price as well as the political climate. The current crisis in Venezuela has a large impact on Cuba’s electricity generation. By expanding its renewable energy sources Cuba could decrease their dependence on other countries and diversify their energy supply. Moreover, it would have a positive climate impact by reducing the country’s CO2-emissions. Geographically, Cuba has ideal conditions for renewable energy utilization, such as solar power. Solar energy is constantly progressing and is considered a great source of energy. Concentrating Solar Power (CSP) is a technology which applies mirrors and/or lenses to concentrate the sunlight onto a small area which converts the sunlight into heat, possible to use in a thermodynamic cycle. There are mainly two problems with the implementation of CSP in Cuba. Firstly, CSP is a non-dispatchable power generating system since it is dependent on the instantaneous weather conditions. Secondly, it has high investment costs. One way of solving these problems is by implementation CSP in an already existing power plants with a dispatchable source of energy, making it a hybrid power plant. Accordingly, the hybrid power plant would be dispatchable and the investment costs would be significantly lower. Existing power plants can be found in Cuban sugar mills. This study investigates the possibility to implement solar power in the sugar mill Carlos Baliño, located in Villa Clara, Cuba. The factory is currently self-sufficient electricity wise on a yearly basis, using a co-generation Rankine cycle to generate electricity and process heat used in the sugar production. The fuel used is bagasse, a rest product obtained after the sugar juice has been pressed out of the sugar canes. Four CSP-technologies and three implementation layouts were examined, resulting in the parabolic trough-technology and feedwater heating being considered the optimal solution. Furthermore, two different scenarios for CSP was investigated; implementation of CSP in the mill at the current state (scenario 1) or after investing in a Condensing-Extraction Turbine (CEST) (scenario 2). The results show that Carlos Baliño should invest in a CEST before considering implementation of CSP. Off-season operation is not available for scenario 1, leading to a vast amount of solar potential being unexploited. The maximal investment allowed for scenario 1 is 3.7 MUSD, which is not a realistic number. The maximal investment allowed for in scenario 2 is 5.9 – 7.2 MUSD, depending on bagasse import availability. If bagasse import is unlimited, it is not recommended to invest in solar power. Implementation of CSP in scenario 2 regarding bagasse import limits would yearly lead to an additional electricity generation at Carlos Baliño of 5.4 – 7.3 GWh, decrease the oil usage with 16,100 – 21,800 barrels and the CO2-emissons with 1,200 – 1,600 tonnes. Carlos Baliño’s annual yield would increase with 0.5 – 0.6 MUSD/year and the Cuban states annual yield would increase with 0.7 – 0.9 MUSD/year. Future work is recommended to explore alternatives to all year-around electricity generation in Carlos Baliño without investing in a CEST, investigate solar power demand on a national level, and examine possible developments of the suggested solar field, for instance solar-only operation.
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Lanzotti, Carla Regina. "Uma analise emergetica de tendencias do setor sucroalcooleiro". [s.n.], 2000. http://repositorio.unicamp.br/jspui/handle/REPOSIP/263949.
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Orientador: Enrique Ortega RodriguezDissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Mecanica
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Resumo: Com a primeira crise do petróleo, em 1973, houve necessidade de buscar fontes alternativas de energia que pudessem substituir os derivados de petróleo. Assim, o Programa Nacional do Álcool ¿ ProÁlcool foi instituído com a emissão do Decreto nº 76.593, de 14 de novembro de 1975, baseando-se, inicialmente, na produção de álcool anídro para misturá-lo à gasolina. Com a nova crise do petróleo, em 1979, além da mistura à gasolina, iniciou-se a fabricação de automóveis movidos a álcool. Isto intensificou a agroindústria canavieira, responsável por impactos ambientais como a destruição de áreas com mata nativa, perda da diversidade da produção rural e lançamento de vinhaça nos rios. Ainda hoje, tais impactos geram problemas ambientais e sociais como: erosão e poluição dos solos, poluição dos recursos hídricos por agrotóxicos, emissão de poluentes na atmosfera pela queima dos canaviais, destruição da biodiversidade e aumento do êxodo rural. Como contrapartida positiva, a adoção do álcool combustível melhorou a qualidade do ar nas cidades brasileiras, substituindo substâncias tóxicas nos combustíveis de veículos automotores. Assim, a relação custo/benefício merece um estudo aprimorado, uma vez que esta indústria é afetada pelas novas possibilidades tecnológicas. Este trabalho analisa possibilidades alternativas da produção da cana-de-açúcar e fabricação de açúcar e álcool, agrupadas como tendências que podem melhorar a produção e diminuir os impactos ambientais da atividade canavieira. Entre elas destacam-se aquelas relacionadas às disposições legais, às inovações tecnológicas e às forças de mercado. A análise da produção da cana, do açúcar e do álcool baseou-se em dados coletados em usinas do estado de São Paulo e, a partir destes dados, foi verificado como a aplicação destas tendências afetaria a agroindústria. A ferramenta escolhida para realizar esta análise foi à metodologia emergética, que permite avaliar os impactos ambientais do sistema de produção, verificando os índices relacionados ao uso de recursos renováveis e não renováveis, os serviços ambientais locais, os serviços econômicos e a rentabilidade econômica do sistema. Baseando-se na metodologia, as vantagens e desvantagens de cada tendência foram identificadas de acordo com o aproveitamento dos recursos naturais renováveis e não-renováveis, materiais e serviços. Das tendências analisadas, a que obteve melhores índices foi a agricultura orgânica. Como previsto, esta técnica aproveita melhor os recursos naturais, agredindo menos o solo e o meio ambiente. Outra vantagem verificada foi à necessidade intensiva de mão-de-obra rural. Esta técnica oferece benefícios ambientais, por ser menos poluidora, e benefícios sociais, pois mantém o emprego dos trabalhadores rurais. Por outro lado, a que se mostrou menos sustentável foi à mecanização da colheita, devido à necessidade de maiores investimentos em equipamentos, tecnologia e combustíveis. É importante ressaltar que cada tendência foi estudada isoladamente, sendo importante realizar simulações com duas ou mais tendências. Com a incorporação de mais tendências na mesma atividade os impactos ambientais e sociais tendem a diminuir, melhorando a produtividade da agroindústria canavieira
Abstract: With the first crisis of the oil, in 1973, it had necessity to search alternative energy sources that could substitute the oil derivatives. Thus, the Alcohol National Program ¿ ProÁlcool ¿ was instituted with the emission of the Decree n° 76,593, of November 14, 1975, being based, initially, in the anhydrous alcohol production to be mixed to gasoline. With the new crisis of the oil, in 1979, beyond the mixture to the gasoline, it was initiated the manufacture of automobiles moved by alcohol. This intensified the sugar cane agricultural industry, responsible for environmental impacts such as the destruction of areas with native forest, loss of the agricultural production diversity and launching of vinasse in the rivers. Still today, these impacts generate environmental and social problems such as: ground erosion and pollution, pollution of the hydro resources with pesticides, pollutants emission in the atmosphere with the cane-plantation burning, biodiversity destruction and increase of the agricultural exodus. As positive counterpart, the adoption of the combustible alcohol improved the quality of air in the Brazilian cities, substituting toxic substances in automachine vehicles fuels. Thus, the cost/benefit relation deserves an improved study, because this industry is affected by the new technological possibilities. This work analyzes alternative possibilities of the sugar cane production and sugar and alcohol manufacture, grouped as trends that can improve the production and diminish the environmental impacts of the sugar cane industry activity. Among them those related to the legal disposals, to the technological innovations and to the market forces are distinguished. The analysis of the sugar cane, sugar and alcohol production was based on data collected in industries in the state of São Paulo and, from these data, it was verified how the application of these trends would affect the agricultural industry. The chosen tool to carry through this analysis was the emergy methodology, that allows the evaluation of the environmental impacts of the system production, verifying the index related to the utilization of renewable and non-renewable resources, the local environmental services, the economic services and the economic yield of the system. Being based on the methodology, the advantages and disadvantages of each trend had been identified in accordance with the exploitation of the renewable and non-renewable natural resources, materials and services. In the analyzed trends, the one that got better index was the organic agriculture. As foreseen, this technique takes advantage of the natural resources better, attacking little the ground and the environment. Another verified advantage was the intensive necessity of agricultural manpower. This technique offers environmental benefits, for being less polluting, and social benefits, because it keeps the job of the agricultural workers. On the other hand, the one that showed less sustainability was the harvest mechanization, due to necessity of bigger investments in equipment, technology and fuels. It is important to stand out that each trend was studied separately, being important to carry through simulation with two or more trends. With the incorporation of more trends in the same activity the environmental and social impacts tend to diminish, improving the productivity of the sugar cane industry
Mestrado
Planejamento de Sistemas Energeticos
Mestre em Engenharia Mecânica
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Potgieter, Bianca. "Die rol en belang van suikerbelasting in Suid-Afrika". Diss., University of Pretoria, 2017. http://hdl.handle.net/2263/65711.
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The former finance minister stated in his budget speech in 2016 that sugar tax would come into force in South Africa from 1 April 2017. The treasury's reason for implementing sugar taxation is to reduce the health problems caused by sugar. It is nothing new to use fiscal measures to recover both taxes and to prevent health problems but it was not yet possible to reach a definite conclusion about the impact of sugar tax on the consumption of sugary drinks and the prevalence of obesity. The reason for this is that there is evidence that the implementation of food tax in different countries has shown different results in terms of public health issues and tax benefits. In South Africa, the implementation of sugar tax can either reduce the prevalence of obesity and thereby have a positive effect on the economy or its implementation may adversely affect the economy. If treasury does not implement sugar tax the economy can also be adversely affected by the prevalence of obesity. This dissertation deals with the effects of non-communicable diseases and sugar tax on the South African economy. The focus is on how sugar tax is being implemented internationally and how South Africa intends to implement sugar tax.Die voormalige minister van finansies het in sy begrotingstoespraak in 2016 vermeld dat suikerbelasting vanaf 1 April 2017 in Suid-Afrika in werking gaan tree. Die tesourie se rede vir die implementering van suikerbelasting is om, in samewerking met die Departement van Gesondheid, die gesondheidsprobleme wat deur suiker veroorsaak word te verminder. Dit is niks nuuts om fiskale maatstawwe te gebruik om beide belasting in te vorder en gesondheidsprobleme te voorkom nie, maar dit was nog nie moontlik om tot ’n definitiewe gevolgtrekking te kom oor die impak van suikerbelasting op die verbruik van suikerversoete drankies en die voorkoms van vetsug nie. Die rede hiervoor is dat daar bewyse is dat die implementering van voedselbelasting in verskillende lande verskillende resultate getoon het in terme van openbare gesondheidskwessies en belastingvoordele. In Suid-Afrika kan die implementering van suikerbelasting óf die voorkoms van vetsug verminder en sodoende die ekonomie bevoordeel óf die implementering daarvan kan die ekonomie negatief beïnvloed. Indien die tesourie nie suikerbelasting implementeer nie kan die ekonomie as gevolg van die voorkoms van vetsug negatief beïnvloed word. Die kern van hierdie skripsie handel oor die gevolge van nieoordraagbare siektes en suikerbelasting op die Suid-Afrikaanse ekonomie. Daar word spesifiek gefokus op hoe suikerbelasting internasionaal geïmplementeer word en hoe Suid-Afrika beoog om suikerbelasting te implementeer.
Mini Dissertation (LLM)--University of Pretoria, 2017.
Mercantile Law
LLM
Unrestricted
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Heasman, Michael Kenneth. "Influence of changing patterns of sucrose consumption on industrial users. Response by manufacturers of soft drinks, biscuits, cereals, cakes confectionery, ice-cream, jams, canned products and other sugar-containing foods to the U. K. dietary guidelines that relate to sucrose consumption". Thesis, University of Bradford, 1988. http://hdl.handle.net/10454/4223.
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Sugar is intrinsically linked with the modern food system. Large sections
of the U. K. food industry are dependent on its use and functional qualities.
Supplies of sucrose entering the food chain have declined 25% between the
1950's and 1980's and currently stand around 37 kg/person/year. Furthermore,
U. K. dietary guidelines over the past 14 years have consistently suggested
caution over how much sugar is eaten, especially in manufactured foods.
Dietary guidelines such as the NACNE report (1983) recommend average sugar
consumption should be no more than 20 kg/person/year. Currently, two-thirds
of sugar supplies are bought for use in food and drink manufacture. Continued
pressures on sugar consumption and negative consumer attitudes to sugar may
be reflected in lost sales of sugar-containing foods. The available information
on U. K. sugar consumption is critically assessed. Although the main sources of
sugar supply are identified, individual sugar consumption is shown to vary by
considerable amounts. The place of sucrose is examined in relation to other
sweeteners and why and where sugars and sweeteners are used in food systems.
The promotion of "no added sugar" and "sugar free" products is examined since
the publication of the NACNE report to the end of 1987. To further test the
impact of changing patterns of sugar consumption on food and drink
manufacturers a national survey of manufacturers who use sugar was carried
out in early 1988. This was an attitudinal postal questionnaire and responses
to the issue of sugar, diet and health were analysed. Respondents bought an
estimated 650,000 tonnes of sugar in 1986, around 45% of the total industrial
market. While the survey aggregate were fully supportive of sucrose,
respondents reported that the majority of consumers were worried about sugar
being bad for health and were actively cutting down on individual intakes.
There were significant differences to the issue of sugar, diet and health
dependent on company size, whether a company manufactured for a retailer's
own label and if products had already been marketed at a "healthy eating"
segment. However, in general, while manufacturers considered consumer
attitudes to sugar to be important they had to be put in the context of other
factors. So far the impact of changing patterns of sugar consumption is not
reflected in the total average industrial purchases of sugar, although
substantial "sugar-free" and "sugar-reduced" product niches have been
established.
Livros sobre o assunto "Sugar indust"
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Řehounek, Jan. Nymburkem ve stopách Bohumila Hrabala. Nymburk: Jan Řehounek - kaplanka, 2012.
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Abbott, George C. Sugar. London: Routledge, 1990.
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Bangsund, Dean A. Economic contribution of the sugarbeet industry to eastern Montana and western North Dakota. Fargo, North Dakota: North Dakota State University, Department of Agribusiness and Applied Economics, Agricultural Experiment Station, 2012.
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Rodríguez, Eugenio Baraja. La expansión de la industria azucarera y el cultivo remolachero del Duero en el contexto nacional. Madrid: Ministerio de Agricultura, Pesca y Alimentación, Secretaría General Técnica, 1994.
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Gaite, María Jesús Marrón. La adopción y expansión de la remolacha azucarera en España: De los orígenes al momento actual. Madrid: Ministerio de Agricultura, Pesca y Alimentación, Secretaría General Técnica, 1992.
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Pospelowa, Galina. Anbau und Verarbeitung von Zuckerrüben in der Ukraine. Berlin: In Kommission bei Duncker & Humblot, 1997.
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Khunāsirin, Butsabā. Rāingān kānwičhai rư̄ang ʻutsāhakam namtān nai Prathēt Thai, Filippin, Taiwan, læ ʻŌ̜tsatrēlīa: Sư̄ksā prīapthīap. [Bangkok]: Sathāban ʻĒchīasưksā, Čhulālongkō̜nmahāwitthayālai, 1988.
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Devanny, Jean. Sugar heaven. Carlton North, Vic: Vulgar Press, 2002.
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Public Relations Office of the Sugar Industry., ed. Sugar in Mauritius. 4a ed. [Port Louis?]: Public Relations Office of the Sugar Industry, 1987.
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Crowson, Belinda. Southern Alberta's sugar-coated history: The sugar beet industry. Lethbridge, Alberta, Canada: Lethbridge Historical Society, 2013.
Encontre o texto completo da fonteCapítulos de livros sobre o assunto "Sugar indust"
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Mullin, Wallace P. "Sugar Industry". In The New Palgrave Dictionary of Economics, 13275–77. London: Palgrave Macmillan UK, 2018. http://dx.doi.org/10.1057/978-1-349-95189-5_2632.
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Mullin, Wallace P. "Sugar Industry". In The New Palgrave Dictionary of Economics, 1–2. London: Palgrave Macmillan UK, 2008. http://dx.doi.org/10.1057/978-1-349-95121-5_2632-1.
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Mohan, Narendra, e Vivek Pratap Singh. "Sugar Industry and Speciality Sugar Manufacturing". In Sugar and Sugar Derivatives: Changing Consumer Preferences, 207–23. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-6663-9_13.
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Curry-Machado, Jonathan. "Introduction". In Cuban Sugar Industry, 1–22. New York: Palgrave Macmillan US, 2011. http://dx.doi.org/10.1057/9780230118881_1.
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Curry-Machado, Jonathan. "Steam and Sugarocracy". In Cuban Sugar Industry, 23–47. New York: Palgrave Macmillan US, 2011. http://dx.doi.org/10.1057/9780230118881_2.
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Curry-Machado, Jonathan. "Engineering Migration". In Cuban Sugar Industry, 49–71. New York: Palgrave Macmillan US, 2011. http://dx.doi.org/10.1057/9780230118881_3.
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Curry-Machado, Jonathan. "The Maquinistas in Cuba". In Cuban Sugar Industry, 73–100. New York: Palgrave Macmillan US, 2011. http://dx.doi.org/10.1057/9780230118881_4.
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Curry-Machado, Jonathan. "Becoming Foreign White Masters". In Cuban Sugar Industry, 101–27. New York: Palgrave Macmillan US, 2011. http://dx.doi.org/10.1057/9780230118881_5.
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Curry-Machado, Jonathan. "A Deepening Sense of Otherness". In Cuban Sugar Industry, 129–55. New York: Palgrave Macmillan US, 2011. http://dx.doi.org/10.1057/9780230118881_6.
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Curry-Machado, Jonathan. "Dependency and Influence". In Cuban Sugar Industry, 157–73. New York: Palgrave Macmillan US, 2011. http://dx.doi.org/10.1057/9780230118881_7.
Texto completo da fonteTrabalhos de conferências sobre o assunto "Sugar indust"
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Telck, Alan B. "Agriculture information systems for the beet sugar industry". In American Society of Sugar Beet Technologist. ASSBT, 2007. http://dx.doi.org/10.5274/assbt.2007.18.
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Ahmed, Tgarguifa, e Abderafi Souad et Bounahmidi Tijani. "Energetic byproducts of sugar industry". In 2014 International Conference on Composite Materials & Renewable Energy Applications (ICCMREA). IEEE, 2014. http://dx.doi.org/10.1109/iccmrea.2014.6843787.
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Shchegolikhina, T. A. "FACTORS OF INTENSIFICATION OF THE SUGAR BEET INDUSTRY". In Agrobiotechnology-2021. Publishing house of RGAU - MSHA, 2021. http://dx.doi.org/10.26897/978-5-9675-1855-3-2021-174.
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The main indicators of sugar beet production and processing are given. The finding of varieties and hybrids of culture in the State Register of breeding achievements is shown. The state of the material and technical base of the sugar beet industry is considered, the change in the fleet of cars in favor of the im-port is noted.
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Nemenushchaya, Lyudmila A., e Tatiana A. Shchegolikhina. "Eco-friendly technologies for the sugar industry". In Агропромышленный комплекс: проблемы и перспективы развития. Благовещенск: Дальневосточный государственный аграрный университет, 2022. http://dx.doi.org/10.22450/9785964205456_1_21.
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"Fijian Sugar Industry-building-up towards Resilience". In Innovation and Networking of Sugarcane Research for Future Sugarcane Industry in the Asian and Pacific Region. Food and Fertilizer Technology Center for the Asian and Pacific Region, 2022. http://dx.doi.org/10.56669/hqpw6662.
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Kudryashev, S. B., N. S. Assev, R. D. Belashov e V. A. Naumenko. "CONTROL IN REAL TIME THE DENSITY OF PRODUCT AT VARIOUS STAGES OF THE TECHNOLOGICAL PROCESS OF SUGAR PRODUCTION". In STATE AND DEVELOPMENT PROSPECTS OF AGRIBUSINESS. DSTU-PRINT, 2020. http://dx.doi.org/10.23947/interagro.2020.1.630-632.
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The article is devoted to solving one of the most important problems of the development of the sugar industry in Russia – the modernization of sugar production processes. Today, sugar production is actively being modernized, shifting most of its processes to the path of avomatization and optimization to improve the quality of products. This article describes one of the main ways to obtain information about the concentration of sucrose in syrup in the production of sugar.
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Gabra, M. A., e B. O. Kjellström. "Evaluation of New Process Options for Co-Generation in the Sugar Industry". In ASME 1996 International Gas Turbine and Aeroengine Congress and Exhibition. American Society of Mechanical Engineers, 1996. http://dx.doi.org/10.1115/96-gt-301.
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Biomass fuelled combined cycle with gas turbine for co-generation, has the promise of being able to produce electricity at competitive cost. The sugar cane industries in the developing countries are targets for near term-applications of this technology. Different options for increasing the electricity generation in the sugar mills by using more advanced steam process and combined cycle technology, using cane trash and bagasse as a fuel for has been analyzed. The TPC sugar mill in Tanzania was selected as a case study for investigation. Introduction of a combined gas turbine/steam turbine process will make it possible to increase the electricity output from 2.5 MW to 30 MW at this plant during milling season. By using cane trash as fuel during the off-season period, the electricity generation can be increased by a factor of 20 compared to what is generated at TPC sugar factory today. The financial evaluation indicated that the annual profit would range from US$ 3.5 million for the advanced steam process with 6.5 years pay-back time, to be US$ 4.7 million for the combined gas turbine/steam turbine process with 6.8 years pay-back time.
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Ingale, Vaibhav P., Akash D. Jadhav, Nilesh K. Takawale e Shrikant D. Mangate. "Power Quality Analysis for Sugar Industry with Cogeneration". In 2018 Second International Conference on Inventive Communication and Computational Technologies (ICICCT). IEEE, 2018. http://dx.doi.org/10.1109/icicct.2018.8472949.
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Qiao, Jian, Shaohong You, Lili Ma, Luxiang Li e Caimin Wei. "The research progress of sugar industry cleaner production". In 2015 2nd International Conference on Machinery, Materials Engineering, Chemical Engineering and Biotechnology. Paris, France: Atlantis Press, 2016. http://dx.doi.org/10.2991/mmeceb-15.2016.21.
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Shugaeva, N. S., e E. S. Len. "ANALYSIS OF THE INFLUENCE OF ENTERPRISES OF THE CONFECTIONERY INDUSTRY OF THE FOOD INDUSTRY ON ATMOSPHERIC AIR ON THE EXAMPLE OF THE COMPANY PC «KRASNY PISHCHEVIK»". In SAKHAROV READINGS 2021: ENVIRONMENTAL PROBLEMS OF THE XXI CENTURY. International Sakharov Environmental Institute of Belarusian State University, 2021. http://dx.doi.org/10.46646/sakh-2021-2-230-233.
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The full cycle of marshmallow production is considered including the preparation of production batches, processing and processing of raw materials, as well as the production of confectionery directly. These and other processes taking place at the plant are sources of air pollution. The plant has 58 sources of pollutant emissions of which 52 organized and 6 unorganized, 3 stationary sources of emissions are equipped with gas-fired gas. The main pollutants are: nitrogen dioxide, sulphur dioxide, carbon monoxide, sugar dust. More than 90% of the dust emitted by sugar, which has explosive properties, is formed in processes not equipped with gas-explosives so it is recommended to install them.
Relatórios de organizações sobre o assunto "Sugar indust"
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Genesove, David, e Wallace Mullin. Validating the Conjectural Variation Method: The Sugar Industry, 1890- 1914. Cambridge, MA: National Bureau of Economic Research, outubro de 1995. http://dx.doi.org/10.3386/w5314.
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Juvik, John A., Avri Bar Zur e Torbert R. Rocheford. Breeding for Quality in Vegetable Maize Using Linked Molecular Markers. United States Department of Agriculture, janeiro de 1993. http://dx.doi.org/10.32747/1993.7568764.bard.
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Recently, the vegetable corn industry has shifted from the use of traditional cultivars with the sugary1 (su1) endosperm mutation to newer hybrids homozygous for the shrunken2 (sh2) or sugary enhancer1 (se1) genes. With greater kernel sucrose content, these hybrids are preferred by consumers and retain sugar for longer post harvest periods, providing the industry with more time to marker products with superior quality. Commercialization has been hindered, however, by reduced field emergence, and the establishment of stands with heterogeneous uniformity and maturities. This investigation was conducted to identify key biochemical and physiological characteristics in sh2 and se1 maize kernels associated with improved emergence, and stand establishment; and in immature ears at fresh harvest maturity, properties associated with eating quality. The location of genes or QTL controlling these kernel characteristics and other traits were then mapped to specific chromosomal regions by their linkage to molecular markers using two segregating F2:3 populations. This database was used to compare the efficiency of marker-assisted selection of key alleles with phenotypic selection for trait improvement. A model designed to uncover and quantify digenic interaction was applied to the datasets to evaluate the role of epistasis in the inheritance of quantitative traits.
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Gillison, Fiona, Elisabeth Grey, Bas Verplanken, Julie Barnett e Frances Baber. A rapid review of the acceptability and impact of approaches to reduce the salt, fat and sugar content of people’s diets on consumers and industry. Food Standards Agency, março de 2022. http://dx.doi.org/10.46756/sci.fsa.ljo674.
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Various approaches have been tried or proposed across the world to reduce population intake of fat, salt and sugar. These include initiatives that directly target food producers or retailers, consumers, or both. This report summarises the findings of 49 systematic reviews identified through a search of published literature, reporting on the acceptability and efficacy of population-scale initiatives to reduce fat, salt and sugar consumption.
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Genesove, David, e Wallace Mullin. Predation and Its Rate of Return: The Sugar Industry, 1887-1914. Cambridge, MA: National Bureau of Economic Research, maio de 1997. http://dx.doi.org/10.3386/w6032.
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Deng, Yingjun, ShengJing Liu, Ming Zhao, Feng Zhao, Jun Guo e Bin Yan. Diet-induced male infertility in mice models: a systematic review and network meta-analysis. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, maio de 2022. http://dx.doi.org/10.37766/inplasy2022.5.0116.
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Review question / Objective: In order to compare the different high energy diet such as high-fat diet and high sugar diet how to damage the male mice model in metabolize and fertility,and explore a reliable mice model method in the study of obesity with male infertility. P：obesity mice model with male infertility. I: High energy diet such as High-fat or High-sugar diet. C:High-fat diet,High-sugar diet, compared with normal diet in mice model. O:High energy diet induce male mice obesity model and damage their fertility. S: Use network meta-analysis. Condition being studied: The relationship between obesity and male infertility attacth more and more attention at present.So many animal expriments are carried out on this problem,there are enough exprimental article to support this meta analysis.
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Ng, Shu Wen, Thomas Hoerger e Rachel Nugent. Preventing Non-communicable Diseases Using Pricing Policies: Lessons for the United States from Global Experiences and Local Pilots. RTI Press, maio de 2021. http://dx.doi.org/10.3768/rtipress.2021.pb.0025.2105.
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Preventing non-communicable diseases (NCDs) in an effective and sustainable way will require forward-looking policy solutions that can address multiple objectives. This was true pre–COVID-19 and is even more true now. There are already examples from across the globe and within the United States that show how these may be possible. Although there are still many unknowns around how the design, targeting, level, sequencing, integration, and implementation of fiscal policies together can maximize their NCD prevention potential, there is already clear evidence that health taxes and particularly sugar-sweetened beverage (SSB) taxes are cost-effective. Nonetheless, policies alone may not succeed. Political will to prioritize well-being, protections against industry interference, and public buy-in are necessary. If those elements align, pricing policies that consider the context in question can be designed and implemented to achieve several goals around reducing consumption of unhealthy SSBs and foods, narrowing existing nutritional and health disparities, encouraging economic and social development. The US and its local and state jurisdictions should consider these pricing policy issues and their contexts carefully, in collaboration with community partners and researchers, to design multi-duty actions and to be prepared for future windows of opportunities to open for policy passage and implementation.
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Wolf, Shmuel, e William J. Lucas. Involvement of the TMV-MP in the Control of Carbon Metabolism and Partitioning in Transgenic Plants. United States Department of Agriculture, outubro de 1999. http://dx.doi.org/10.32747/1999.7570560.bard.
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The function of the 30-kilodalton movement protein (MP) of tobacco mosaic virus (TMV) is to facilitate cell-to-cell movement of viral progeny in infected plants. Our earlier findings have indicated that this protein has a direct effect on plasmodesmal function. In addition, these studies demonstrated that constitutive expression of the TMV MP gene (under the control of the CaMV 35S promoter) in transgenic tobacco plants significantly affects carbon metabolism in source leaves and alters the biomass distribution between the various plant organs. The long-term goal of the proposed research was to better understand the factors controlling carbon translocation in plants. The specific objectives were: A) To introduce into tobacco and potato plants a virally-encoded (TMV-MP) gene that affects plasmodesmal functioning and photosynthate partitioning under tissue-specific promoters. B) To introduce into tobacco and potato plants the TMV-MP gene under the control of promoters which are tightly repressed by the Tn10-encoded Tet repressor, to enable the expression of the protein by external application of tetracycline. C) To explore the mechanism by which the TMV-MP interacts with the endogenous control o~ carbon allocation. Data obtained in our previous project together with the results of this current study established that the TMV-MP has pleiotropic effects when expressed in transgenic tobacco plants. In addition to its ability to increase the plasmodesmal size exclusion limit, it alters carbohydrate metabolism in source leaves and dry matter partitioning between the various plant organs, Expression of the TMV-MP in various tissues of transgenic potato plants indicated that sugars and starch levels in source leaves are reduced below those of control plants when the TMV-MP is expressed in green tissue only. However, when the TMV-MP was expressed predominantly in PP and CC, sugar and starch levels were raised above those of control plants. Perhaps the most significant result obtained from experiments performed on transgenic potato plants was the discovery that the influence of the TMV-MP on carbohydrate allocation within source leaves was under developmental control and was exerted only during tuber development. The complexity of the mode by which the TMV-MP exerts its effect on the process of carbohydrate allocation was further demonstrated when transgenic tobacco plants were subjected to environmental stresses such as drought stress and nutrients deficiencies, Collectively, these studies indicated that the influence of the TMV-MP on carbon allocation L the result of protein-protein interaction within the source tissue. Based on these results, together with the findings that plasmodesmata potentiate the cell-to-cell trafficking of viral and endogenous proteins and nucleoproteins complexes, we developed the theme that at the whole plant level, the phloem serves as an information superhighway. Such a long-distance communication system may utilize a new class of signaling molecules (proteins and/or RNA) to co-ordinate photosynthesis and carbon/nitrogen metabolism in source leaves with the complex growth requirements of the plant under the prevailing environmental conditions. The discovery that expression of viral MP in plants can induce precise changes in carbon metabolism and photoassimilate allocation, now provide a conceptual foundation for future studies aimed at elucidating the communication network responsible for integrating photosynthetic productivity with resource allocation at the whole-plant level. Such information will surely provide an understanding of how plants coordinate the essential physiological functions performed by distantly-separated organs. Identification of the proteins involved in mediating and controlling cell-to-cell transport, especially at the companion cell-sieve element boundary, will provide an important first step towards achieving this goal.
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Finkelshtain, Israel, e Tigran Melkonyan. The economics of contracts in the US and Israel agricultures. United States Department of Agriculture, fevereiro de 2008. http://dx.doi.org/10.32747/2008.7695590.bard.
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Research Objectives 1) Reviewing the rich economic literature on contracting and agricultural contracting; 2) Conducting a descriptive comparative study of actual contracting patterns in the U.S. and Israeli agricultural sectors; 3) Theoretical analysis of division of assets ownership, authority allocation and incentives in agricultural production contracts; 4) Theoretical analysis of strategic noncompetitive choice of agricultural production and marketing contracts, 5) Empirical studies of contracting in agricultural sectors of US and Israel, among them the broiler industry, the citrus industry and sugar beet sector. Background Recent decades have witnessed a world-wide increase in the use of agricultural contracts. In both the U.S. and Israel, contracts have become an integral part of production and marketing of many crops, fruits, vegetables and livestock commodities. The increased use of agricultural contracts raises a number of important economic policy questions regarding the optimal design of contracts and their determinants. Even though economists have made a substantial progress in understanding these issues, the theory of contracts and an empirical methodology to analyze contracts are still evolving. Moreover, there is an enormous need for empirical research of contractual relationships. Conclusions In both U.S. and Israel, contracts have become an integral part of production and marketing of many agricultural commodities. In the U.S. more than 40% of the value of agricultural production occurred under either marketing or production contracts. The use of agricultural contracts in Israel is also ubiquitous and reaches close to 60% of the value of agricultural production. In Israel we have found strategic considerations to play a dominant role in the choice of agricultural contracts and may lead to noncompetitive conduct and reduced welfare. In particular, the driving force, leading to consignment based contracts is the strategic effect. Moreover, an increase in the number of contractors will lead to changes in the terms of the contract, an increased competition and payment to farmers and economic surplus. We found that while large integrations lead to more efficient production, they also exploit local monopsonistic power. For the U.S, we have studied in more detail the choice of contract type and factors that affect contracts such as the level of informational asymmetry, the authority structure, and the available quality measurement technology. We have found that assets ownership and decision rights are complements of high-powered incentives. We have also found that the optimal allocation of decision rights, asset ownership and incentives is influenced by: variance of systemic and idiosyncratic shocks, importance (variance) of the parties’ private information, parameters of the production technology, the extent of competition in the upstream and downstream industries. Implications The primary implication of this project is that the use of agricultural production and marketing contracts is growing in both the US and Israeli agricultural sectors, while many important economic policy questions are still open and require further theoretical and empirical research. Moreover, actual contracts that are prevailing in various agricultural sectors seems to be less than optimal and, hence, additional efforts are required to transfer the huge academic know-how in this area to the practitioners. We also found evidence for exploitation of market powers by contactors in various agricultural sectors. This may call for government regulations in the anti-trust area. Another important implication of this project is that in addition to explicit contracts economic outcomes resulting from the interactions between growers and agricultural intermediaries depend on a number of other factors including allocation of decision and ownership rights and implicit contracting. We have developed models to study the interactions between explicit contracts, decision rights, ownership structure, and implicit contracts. These models have been applied to study contractual arrangements in California agriculture and the North American sugarbeet industry.
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Shomer, Ilan, Ruth E. Stark, Victor Gaba e James D. Batteas. Understanding the hardening syndrome of potato (Solanum tuberosum L.) tuber tissue to eliminate textural defects in fresh and fresh-peeled/cut products. United States Department of Agriculture, novembro de 2002. http://dx.doi.org/10.32747/2002.7587238.bard.
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The project sought to understand factors and mechanisms involved in the hardening of potato tubers. This syndrome inhibits heat softening due to intercellular adhesion (ICA) strengthening, compromising the marketing of industrially processed potatoes, particularly fresh peeled-cut or frozen tubers. However, ICA strengthening occurs under conditions which are inconsistent with the current ideas that relate it to Ca-pectate following pectin methyl esterase (PME) activity or to formation of rhamnogalacturonan (RG)-II-borate. First, it was necessary to induce strengthening of the middle lamellar complex (MLX) and the ICA as a stress response in some plant parenchyma. As normally this syndrome does not occur uniformly enough to study it, we devised an efficient model in which ICA-strengthening is induced consistently under simulated stress by short-chain, linear, mono-carboxylic acid molecules (OAM), at 65 oC [appendix 1 (Shomer&Kaaber, 2006)]. This rapid strengthening was insufficient for allowing the involved agents assembly to be identifiable; but it enabled us to develop an efficient in vitro system on potato tuber parenchyma slices at 25 ºC for 7 days, whereas unified stress was reliably simulated by OAMs in all the tissue cells. Such consistent ICA-strengthening in vitro was found to be induced according to the unique physicochemical features of each OAM as related to its lipophilicity (Ko/w), pKa, protonated proportion, and carbon chain length by the following parameters: OAM dissociation constant (Kdiss), adsorption affinity constant (KA), number of adsorbed OAMs required for ICA response (cooperativity factor) and the water-induced ICA (ICAwater). Notably, ICA-strengthening is accompanied by cell sap leakage, reflecting cell membrane rupture. In vitro, stress simulation by OAMs at pH<pKa facilitated the consistent assembly of ICAstrengthening agents, which we were able to characterize for the first time at the molecular level within purified insoluble cell wall of ICA-strengthened tissue. (a) With solid-state NMR, we established the chemical structure and covalent binding to cell walls of suberin-like agents associated exclusively with ICA strengthening [appendix 3 (Yu et al., 2006)]; (b) Using proteomics, 8 isoforms of cell wall-bound patatin (a soluble vacuolar 42-kDa protein) were identified exclusively in ICA-strengthened tissue; (c) With light/electron microscopy, ultrastructural characterization, histochemistry and immunolabeling, we co-localized patatin and pectin in the primary cell wall and prominently in the MLX; (d) determination of cell wall composition (pectin, neutral sugars, Ca-pectate) yielded similar results in both controls and ICA-strengthened tissue, implicating factors other than PME activity, Ca2+ or borate ions; (e) X-ray powder diffraction experiments revealed that the cellulose crystallinity in the cell wall is masked by pectin and neutral sugars (mainly galactan), whereas heat or enzymatic pectin degradation exposed the crystalline cellulose structure. Thus, we found that exclusively in ICA-strengthened tissue, heat-resistant pectin is evident in the presence of patatin and suberinlike agents, where the cellulose crystallinity was more hidden than in fresh control tissue. Conclusions: Stress response ICA-strengthening is simulated consistently by OAMs at pH< pKa, although PME and formation of Ca-pectate and RG-II-borate are inhibited. By contrast, at pH>pKa and particularly at pH 7, ICA-strengthening is mostly inhibited, although PME activity and formation of Ca-pectate or RG-II-borate are known to be facilitated. We found that upon stress, vacuolar patatin is released with cell sap leakage, allowing the patatin to associate with the pectin in both the primary cell wall and the MLX. The stress response also includes formation of covalently bound suberin-like polyesters within the insoluble cell wall. The experiments validated the hypotheses, thus led to a novel picture of the structural and molecular alterations responsible for the textural behavior of potato tuber. These findings represent a breakthrough towards understanding of the hardening syndrome, laying the groundwork for potato-handling strategies that assure textural quality of industrially processed particularly in fresh peeled cut tubers, ready-to-prepare and frozen preserved products.
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Shomer, Ilan, Louise Wicker, Uzi Merin e William L. Kerr. Interactions of Cloud Proteins, Pectins and Pectinesterases in Flocculation of Citrus Cloud. United States Department of Agriculture, fevereiro de 2002. http://dx.doi.org/10.32747/2002.7580669.bard.
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The overall objective was to understand the cloud flocculation of citrus juice by characterization of the interactions between proteins and pectins, and to determine the role of PE isozymes in catalyzing this phenomenon. Specific objectives were to: 1. identify/characterize cloud-proteins in relation to their coagulable properties and affinity to pectins; 2. to determine structural changes of PME and other proteins induced by cation/pectin interactions; 3. localize cloud proteins, PME and bound protein/pectates in unheated and pasteurized juices; 4. to create "sensitized" pectins and determine their effect on clarification. The original objectives were not changed but the methods and approach were modified due to specific research requirements. Two i postulates were: 1. there is a specific interaction of cloud proteins with de-esterified regions of ! pectin and this contributes to cloud loss; 2. isozymes of pectin-methyl-esterase (PME) vary in efficiency to create sensitized pectins. The appearance of citrus fruit juice is an important quality factor and is determined by the color and turbidity that .are conferred by the suspended particles, i.e., by the cloud and its homogeneity. Under some circumstances the cloud tend to flocculate and the juice clarifies. The accepted approach to explain the clarification is based on pectin demethoxylation by PME that promotes formation of Ca-pectate. Therefore, the juice includes immediate heat-inactivation upon ~ squeezing. Protein coagulation also promotes cloud instability of citrus fruit extracts. However, the clarification mechanism is not fully understood. Information accumulated from several laboratories indicates that clarification is a more complex process than can be explained by a single mechanism. The increasing trend to consume natural-fresh juice emphasizing the importance of the knowledge to assure homogeneity of fresh juice. The research included complementary directions: Conditions that induce cloud-instability of natural- juice [IL]. Evaluate purification schemes of protein [USA]. Identifications of proteins, pectin and neutral sugars ([IL]; Structure of the cloud components using light and electron microscopy and immuno-labeling of PME, high-methoxyl-pectin (HMP) and low-methoxyl-pectin (LMP); Molecular weight of calcium sensitized pectins [US]; Evaluation of the products of PME activity [US]. Fractions and size distribution and cloud components [IL-US]. The optimal pH activity of PME is 7 and the flocculation pH of the cloud is 3-4. Thus, the c roles of PME, proteins and pectins in the cloud instability, were studied in pH ranges of 2- 7. The experiments led to establish firstly repeatable simulate conditions for cloud instability [IL]. Thermostable PME (TS-PE) known to induce cloud instability, but also thermolabile forms of PME (TL-PE) caused clarification, most likely due to the formation and dissolution of inactive :. PE-pectin complexes and displacement of a protective colloid from the cloud surface [US]. Furthermore, elimination of non-PME protein increases TS-PE activity, indicating that non-PME proteins moderate PME activity [US]. Other experiments Concomitantly with the study of the PME activity but promotes the association of cloud-proteins to pectin. Adjusting of the juice pH to f 7 retains the cloud stability and re-adjusting of the pH to 40% DE reacts to immuno-labeling in the cloud fragments, whereas