982 resultados para 612.238


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The development of agriculture is a main pillar of Myanmar’s growth strategies. It is natural for the Myanmar government to prioritize agriculture as a source of economic growth, since it accounted for 36% of GDP, employs a majority of labor force, and generates nearly 30% of exports as of 2010. Although the agricultural share in GDP and employment usually declines as an economy grows, it is not a sunset industry in Myanmar. Methods exist for increasing agriculture’s value added other than the growth of labor and land inputs. The key is to enhance three productivity measures: labor, land, and total productivity. We call this strategy "Agriculture Plus Plus."

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Se llevó a cabo un estudio con el objetivo de determinar el mejoramiento de la composición química de la biomasa verde y tratada con Urea como proceso de amonificación. El pasto utilizado fue el Gamba (Andropogon gayanus Kunth), cv CIAT-621 el cual se encontraba en etapa fenológica de pansoneo. El muestreo se realizó durante el mes de noviembre del año 2009 en la Finca Santa Rosa, Universidad Nacional Agraria. Managua, Nicaragua. Los tratamiento consistieron en cuatro niveles de aplicación de Urea; 0, 1, 3 y 5 % en base al forraje verde a tratar, diluido en 0.5 lt de agua, y almacenados en bolsas de polietileno durante 21 días a temperatura ambiente. El diseño utilizado fue un DCA (Diseño completo al Azar) con tres repeticiones. Las variables de estudio para cada tratamiento fueron, porcentajes de; materia seca, proteína cruda, fibra ácido detergente (FAD), fibra neutro detergente (FND), calcio y fósforo. Se realizaron análisis de varianza (ANDEVA) y separaciones de medias, usando Duncan (P<0.05). Para el análisis estadístico las variables codificadas en porcentajes se transformaron, según, arco seno 2 p (Arco seno de dos veces la raíz cuadrada de la proporción). Los resultados encontrados demuestran diferencias significativas (P ≤ 0.05) para las variables Proteína Cruda (PC), Fibra Neutro y Ácido Detergente (FND, FAD), Calcio y Fósforo. La PC varío de 2.22 % a 6.07 % para 0 % y 5 % de Urea respectivamente, mientras la FND disminuyó de 78.47 % a 73.16 % para 0 y 3 % respectivamente. La FAD disminuyo de 52.46 % a 47.72 % para 0 y 3 % de inclusión de Urea. Los minerales evaluados presentaron una tendencia inversa con los tratamientos de Urea, Incrementándose el Ca desde el tratamiento testigo(0.65 %) hasta 1.24 % para 0 y 5 % de Urea. El Fósforo disminuyo de 0.21 % para el testigo a 0.14 % para 1 % de Urea.. Se concluye que el tratamiento de 3 % de Urea es el más recomendado para la amonificación de forraje verde en etapa fonológica de inicio de floración del Andropogon gayanus Kunth y que la tecnología de amonificación en verde ejerce un efecto positivo en el mejoramiento de la calidad del forraje.

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Monografia (especialização) – Curso de Política e Representação Parlamentar, Câmara dos Deputados, Centro de Formação, Treinamento e Aperfeiçoamento (Cefor), 2013.

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A Comissão de Sistematização debate a reforma tributária. O Deputado Francisco Dornelles (PFL-RJ) defende o substitutivo do Relator Bernardo Cabral, por promover a melhor distribuição regional de renda, fortalecer as finanças dos Estados e Municípios e estabelecer maiores garantias aos contribuintes, além de não causar prejuízo a União. Constituintes criticam o substitutivo na parte que trata dos recursos destinados ao Fundo de Participação dos Estados e Municípios. O Deputado Darcy Deitos (PMDB-PR) considera que essa distribuição só beneficia uma parte dos municípios e, por isso, apresentou uma emenda mais completa. O Deputado Marcelo Cordeiro (PMDB-SC) participa de debate sobre a Assembleia Nacional Constituinte (ANC), na Universidade de Santa Catarina. A comunidade universitária quis saber o tratamento dado a educação e as emendas populares. Chegou a 8374 o número de destaques apresentados ao anteprojeto. O Líder do PDC Siqueira Campos informa que seu partido quer criar novos Estados nas regiões Norte e Centro-Oeste do país. O ponto mais polêmico da Assembleia Nacional Constituinte (ANC) continua a ser o sistema de governo. O Líder do PSB Jamil Haddad considera que parece haver uma manobra para favorecer o presidencialismo com 5 anos de mandato para o Presidente Sarney. O Deputado Sarney Filho (PFL-MA) reafirma que o governo permanece aberto ao diálogo, em busca de uma solução de consenso para o país. O Líder do PMDB o Deputado Antônio Farias afirma que houve muitas surpresas, entre as quais a duração do mandato do presidente da república. Funcionários trabalham na organização dos pedidos de destaque. Os critérios para votação do substitutivo e dos pedidos de destaque serão definidos em reunião do Presidente da Assembleia Nacional Constituinte (ANC) Ulysses Guimarães com o Presidente da Comissão de Sistematização.

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A presente Nota Técnica, apresentada por solicitação do Deputado JOÃO DADO, SISCONOF 274/2013, visa apresentar análise do Projeto de Lei Complementar nº 238/2013, no qual o Poder Executivo propõe alterações das exigências para concessão de desonerações tributárias presentes no art. 14 da Lei Complementar nº 101/2000, Lei de Responsabilidade Fiscal – LRF, dentre outras propostas

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When dissolved in water, compounds of nitrogen and phosphorus ought to contain the basic assimilated food requirements for autotrophic plants and therefore autotrophic algae. This article summarises the occurrence of nitrogen in water, how species of algae utilize nitrogen and phosphorus forms for growth and the capacities of algae to adapt to environments of different nutrient wealth. This topic has unquestionable importance not only for the purpose of survival of a species but also in deciding indirectly about the stability of ecosystems.

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The sea bottom of the Wadge and Pedro Banks are covered with hard corals and rocks, which cause frequent damages to the net and sometimes total loss of the gear (Hamuro, 1966). This has been one of the main reasons why trawling had been restricted to a small area of the Wadge Bank until recent years.

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主要介绍了利用兰州重离子加速器提供的270 MeV的40Ar离子束轰击238U靶,通过熔合蒸发反应进行试合成Z=110附近的新同位素的实验情况。分析了目前关于超重核研究的现状并描述了这次实验的目的、可行性分析、实验装置以及实验过程等。本次实验仍然用氦喷嘴技术对产物进行传输,并用一套具有数对探测器组的转轮收集探测系统对产物进行收集和测量。

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Within the framework of the dinuclear system (DNS) model, production cross sections of new superheavy nuclei with charged numbers Z=108-114 are analyzed systematically. Possible combinations based on the actinide nuclides U-238, Pu-244, and Cm-248,Cm-250 with the optimal excitation energies and evaporation channels are pointed out to synthesize new isotopes that lie between the nuclides produced in the cold fusion reactions and the Ca-48-induced fusion reactions experimentally, which are feasible to be constructed experimentally. It is found that the production cross sections of superheavy nuclei decrease drastically with the charged numbers of compound nuclei. Larger mass asymmetries of the entrance channels enhance the cross sections in 2n-5n channels.

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A thick natural uranium target was bombarded with a 60 MeV/u O-18 beam. The neutron-rich isotope Ra-230 as the target residue was produced through the multinucleon transfer reaction (U-238-4p-4n). The barium and radium fraction as BaCl2 precipitate were radiochemically separated first from the mixture of uranium and reaction products. Then, the radium fraction was separated from BaCl2 precipitate by using cation exchange technique. The gamma-ray spectra of the Ra fraction were measured using an HPGe detector. The production cross sections of Ra-230 were obtained by a combination of the radiochemical separation technique and off-line gamma-ray spectroscopy. The cross section of Ra-230 has been determined to be 66 +/- 20 mu b.

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The neutron-rich target-like isotope Th-236 has been produced in the U-238-2p multinucleon transfer reaction between a 60 MeV/u O-18 beam and natural U-238 targets. The activities of thorium were determined after radiochemical separation of Th from the mixture of uranium and reaction products. The Th-236 isotope was identified by the characteristic gamma-rays of 642.2, 687.6 and 229.6 keV. The production cross section of Th-236 was determined to be 250 +/- 50 mu b.

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The neutron-rich target-like isotope Th-236 was produced in U-238-2p multinucleon transfer reaction between a 60MeV/u O-18 beam and nature U-238 targets. The thorium activities were radiochemically separated from the mixture of uranium and reaction products. The isotope Th-236 was identified by 642.2keV, 687.6keV and 229.6keV characteristic gamma-rays. The production cross section of Th-236 has been determined to be 250 +/- 50 mu b.

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采用单次分子镀方法研究了异丙醇-硝酸体系中电流密度、分子镀持续时间及两极间距离对镀层性能和电沉积效率的影响,确定了制备La,Sm,Eu,Gd,Tb靶及238U靶的最佳工艺条件。因制备的靶不同,电流密度一般介于2—8mA/cm2之间,两极间最优距离为3cm,分子镀1h,用分光光度法测定各靶的沉积效率均高于85%。利用扫描电子显微镜(SEM)对部分靶的表面形貌分析后发现靶面结构均匀致密。目前制得的Gd靶和Tb靶已用于中国科学院近代物理研究所加速器SFC低能核化学终端上,利用19F束流轰击,分别产生了Ta和W的短寿命同位素,从而成功完成了Db(Z=105)及Sg(Z=106)的模型试验。

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The deformed doubly magic nucleus (270)Hs has so far only been observed as the four-neutron (4n) evaporation residue of the reaction Mg-26+Cm-248, where a maximum cross section of 3 pb was measured. Theoretical studies on the formation of (270)Hs in the 4n evaporation channel of fusion reactions with different entrance channel asymmetry in the framework of a two-parameter Smoluchowski equation predict that the reactions Ca-48+Ra-226 and S-36+U-238 result in higher cross sections due to lower reaction Q values, in contrast to simple arguments based on the reaction asymmetry, which predict opposite trends. Calculations using HIVAP predict cross sections for the reaction S-36+U-238 that are similar to those of the Mg-26+Cm-248 reaction. Here, we report on the first measurement of evaporation residues formed in the complete nuclear fusion reaction S-36+U-238 and the observation of (270)Hs, which is produced in the 4n evaporation channel, with a measured cross section of 0.8(-0.7)(+2.6) pb at 51-MeV excitation energy. The one-event cross-section limits (68% confidence level) for the 3n, 4n, and 5n evaporation channels at 39-MeV excitation energy are 2.9 pb, while the cross-section limits of the 3n and 5n channel at 51 MeV are 1.5 pb. This is significantly lower than the 5n cross section of the Mg-26+Cm-248 reaction at similar excitation energy.