177 research outputs found

    President Lincoln and His Cabinet, with Lt. Gen. Scott, in the Council Chamber at the White House

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    The steel engraving features a black and white image of Abraham Lincoln and his 1861 cabinet members. Pictured from left to right are Edward Bates (Attorney General), Gideon Welles (Secretary of the Navy), Montgomery Blair (Postmaster General), William Henry Seward (Secretary of State), Salmon Portland Chase (Secretary of the Treasury), the President, General Winfield Scott (Chief of the Army), Caleb Blood Smith (Secretary of the Interior), and Simon Cameron (Secretary of War). Since the engraving lacks a publication line, it may never have been issued, perhaps because Scott retired and Cameron had been replaced by February 1862.https://scholarsjunction.msstate.edu/fvw-prints/1121/thumbnail.jp

    A configuração do vínculo empregatício no trabalho de guarda vidas voluntários no Estado de Santa Carina.

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    TCC(graduação) - Universidade Federal de Santa Catarina. Centro de Ciências Jurídicas. Direito.O serviço voluntário surge como uma forma de viabilizar que pessoas que possuem o desejo de auxiliar aos necessitados e à sociedade, por meio do uso altruísta da sua força de trabalho, possam fazê-lo de forma sistemática e organizada, gerando garantias aos prestadores e destinatários do serviço. Tal situação se difere da relação empregatícia, pois nesta existem requisitos específicos – quais sejam onerosidade, habitualidade, pessoalidade e subordinação – os quais não se fazem presentes no serviço voluntário, em especial, a onerosidade. No Brasil, as regras gerais do serviço voluntário são estabelecidas pela Lei nº 9.608/98, que determina as balizas desta atividade, em especial o fato de que o prestador de serviços faz jus tão somente ao ressarcimento de despesas (devidamente autorizadas) e não a qualquer tipo de remuneração fixa. O Estado de Santa Catarina, por meio da Lei Estadual nº 16.533/2014, aplica aos guarda vidas civis o regime do serviço voluntário, estabelecendo, para tanto, um valor fixo de ressarcimento (relativo à alimentação e transporte), determinado por ato do Chefe do Poder Executivo. O presente trabalho deve apresentar, através de uma série de argumentos fáticos e normativos, como a legislação do Estado de Santa Catarina, ao simular o tratamento do serviço voluntário aos guarda vidas civis, acaba por desrespeitar a legislação trabalhista

    Respostas fenológicas de cultivares brasileiras de trigo à vernalização e ao fotoperíodo

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    O objetivo deste trabalho foi avaliar o efeito de diferentes combinações de vernalização e fotoperíodo no desenvolvimento de cinco cultivares brasileiras de trigo. O experimento foi realizado em Passo Fundo, RS, em três épocas de semeadura: 23/6, 25/7 e 27/8 de 2003. O delineamento experimental foi o de blocos ao acaso com parcelas subsubdivididas e quatro repetições. Os tratamentos consistiram de: três regimes fotoperiódicos - fotoperíodo natural (FN), fotoperíodo estendido em quatro horas (FE 4) e fotoperíodo estendido até completar vinte horas de luz (FE 20) - locados na parcela principal; dois regimes de vernalização - não vernalizado (NV) e vernalizado com 30 dias (V) -, na subparcela; e cinco cultivares de trigo - BRS 179, BRS 194, BRS 207, BRS Figueira e BRS Umbu, avaliadas nas subsubparcelas. Houve interação entre fotoperíodo e cultivar (semeadura em 23/6), e todas as cultivares tiveram o ciclo reduzido com o aumento do fotoperíodo, enquanto nas plantas com épocas de semeadura 25/7 e 27/8, houve interação entre fotoperíodo e cultivar e entre vernalização e cultivar. Essas variáveis aceleraram o ciclo de desenvolvimento da cultura e interferiram na duração dos subperíodos importantes para a formação dos componentes do rendimento de grãos

    Genetic and environmental effects on crop development determining adaptation and yield

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    Slafer, Gustavo Ariel. ICREA - AGROTECNIO - Spain.Kantolic, Adriana Graciela. Universidad de Buenos Aires. Facultad de Agronomía. Buenos Aires, Argentina.Appendino, María Laura. Universidad de Buenos Aires. Facultad de Agronomía. Buenos Aires, Argentina.Tranquilli, Gabriela Edith. Instituto Nacional de Tecnología Agropecuaria (INTA). Recursos Naturales. Instituto de Recursos Biológicos. Buenos Aires, Argentina.Miralles, Daniel Julio. Universidad de Buenos Aires. Facultad de Agronomía. Buenos Aires, Argentina.Savin, Roxana. ICREA - AGROTECNIO - Spain.Crop development is a sequence of phenological events controlled by the genetic background and influenced by external factors, which determines changes in the morphology and/or function of organs (Landsberg, 1977). Although development is a continuous process, the ontogeny of a crop is frequently divided into discrete periods, for instance ‘vegetative’, ‘reproductive’ and ‘grain - filling’ phases (Slafer, 2012). Patterns of phenological development largely determine the adaptation of a crop to a certain range of environments. For example, genetic improvement in grain yield of wheat has been associated with shorter time from sowing to anthesis in Mediterranean environments of western Australia (Siddique et al., 1989), whereas no consistent trends in phenology were found where drought is present but not necessarily terminal, including environments of Argentina, Canada and the USA (Slafer and Andrade, 1989, 1993; Slafer et al., 1994a) (Fig. 12.1). Even in agricultural lands of the Mediterranean Basin where wheat has been grown for many centuries, breeding during the last century did not clearly change phenological patterns (Acreche et al., 2008). This chapter focuses on two major morphologically and hysiologically contrasting grain crops: wheat and soybean. For both species, we have an advanced understanding of development and physiology in general. Wheat is a determinate, long-day grass of temperate origin, which is responsive to vernalization. Soybean is a typically indeterminate (but with determinate intermediate variants), short-day grain legume of tropical origin, which is insensitive to vernalization. Comparisons with other species are used to highlight the similarities and differences. The aims of this chapter are to outline the developmental characteristics of grain crops and the links between phenology and yield, to revise the mechanisms of environmental and genetic control of development and to explore the possibilities of improving crop adaptation and yield potential through the fine-tuning of developmental patterns

    Genetic control of duration of pre-anthesis phases in wheat (Triticum aestivum L.) and relationships to leaf appearance, tillering, and dry matter accumulation

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    The duration of pre-anthesis developmental phases is of interest in breeding for improved adaptation and yield potential in temperate cereals. Yet despite numerous studies on the genetic control of anthesis (flowering) time and floral initiation, little is known about the genetic control of other pre-anthesis phases. Furthermore, little is known about the effect that changes in the duration of pre-anthesis phases could have on traits related to leaf appearance and tillering, or dry matter accumulation before terminal spikelet initiation (TS). The genetic control of the leaf and spikelet initiation phase (LS; from sowing to TS), the stem elongation phase (SE; from TS to anthesis), and, within the latter, from TS to flag leaf appearance and from then to anthesis, was studied in two doubled-haploid, mapping bread wheat populations, Cranbrook×Halberd and CD87×Katepwa, in two field experiments (ACT and NSW, Australia). The lengths of phases were estimated from measurements of both TS and the onset of stem elongation. Dry weight per plant before TS, rate of leaf appearance, tillering rate, maximum number of tillers and number of leaves, and dry weight per plant at TS were also estimated in the Cranbrook×Halberd population. More genomic regions were identified for the length of the different pre-anthesis phases than for total time to anthesis. Although overall genetic correlations between LS and SE were significant and positive, independent genetic variability between LS and SE, and several quantitative trait loci (QTLs) with different effects on both phases were found in the two populations. Several of these QTLs (which did not seem to coincide with reported major genes) could be of interest for breeding purposes since they were only significant for either LS or SE. There was no relationship between LS and the rate of leaf appearance. LS was strongly and positively correlated with dry weight at TS but only slightly negatively correlated with early vigour (dry weight before TS). Despite significant genetic correlations between LS and some tillering traits, shortening LS so as to lengthen SE without modifying total time to anthesis would not necessarily reduce tillering capacity, as QTLs for tillering traits did not coincide with those QTLs significant only for LS or SE. Therefore, the study of different pre-anthesis phases is relevant for a better understanding of genetic factors regulating developmental time and may offer new tools for fine-tuning it in breeding for both adaptability and yield potential
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