OALib Journal期刊

ISSN: 2333-9721

費用:99美元

投稿

時間不限

2020 ( 179 )

2019 ( 390 )

2018 ( 423 )

2017 ( 364 )

自定義范圍…

匹配條件: “Daniel Valad?o Silva” ,找到相關結果約184645條。
列表顯示的所有文章,均可免費獲取
第1頁/共184645條
每頁顯示
Tumores neuroendócrinos do cólon e reto: experiência do Instituto Nacional do Cancer no Brasil Colon and rectum neuroendocrine tumors: experience of the National Cancer Institute in Brazil
Daniel Cesar,Renato Morato Zanatto,Marcus Vinícius Motta Valado da Silva,Rinaldo Gol?alves
ABCD. Arquivos Brasileiros de Cirurgia Digestiva (S?o Paulo) , 2013,
Abstract: RACIONAL: Os tumores neuroendócrinos (TNEs) s o raros e compreendem apenas 0,49% de todas as neoplasias malignas. A maioria acomete o trato gastrointestinal. OBJETIVO: Analisar os fatores demográficos, características clinicopatológicas, tratamento empregado, fatores prognósticos e resultados oncológicos relacionados aos TNEs colorretais. MéTODOS: No período compreendido entre 1996 e 2010 foram tratados 174 pacientes. Destes, 34 localizavam-se no cólon e reto. Foram analisados fatores demográficos, estadiamento, os procedimentos terapêuticos aplicados e seus resultados. No seguimento todos os pacientes foram acompanhados acima de três anos com exames de imagem, dosagem de 5-HIIA urinário, cromogranina-A sérica e fosfatase ácida prostática. RESULTADOS: A média de idade no diagnóstico foi de 54,5 anos (22-76), com predominancia do sexo feminino (64,7%). Dos 12 com TNEs de cólon, um (8,3%) foi classificado como estádio IA; um (8,3%) em IB; três (25%) em IIIB e sete (58,4%) em IV. Dos 22 pacientes com TNEs de reto, seis (27,3%) foram classificados como estádio IA; quatro (18,2%) em IB; três (13,6%) em IIIA; um (4,5%) em IIIB e oito (36,4%) em IV. Dos TNEs de reto, nove (41%) foram tratados com ressec o endoscópica, seis (27,2%) com procedimento cirúrgico e seis (27,2%) somente com quimioterapia. Onze pacientes com TNEs de cólon (91,6%), foram tratados cirurgicamente, sendo sete paliativamente, um (8,4%) com ressec o endoscópica e nenhum foi submetido à quimioterapia no primeiro momento. Após seguimento médio de 55 meses, 19 (55%) pacientes estavam vivos. Analisando a sobrevida global obteve-se média de 29 meses no estádio IA, 62 meses no IB, 12 meses no IIIA, 31 meses no IIIB e 39 meses no IV. CONCLUS O: O tratamento dos TNEs de cólon e reto é complexo, pois depende de variáveis que s o individuais a cada paciente. Com adequado manuseio, o prognóstico pode ser favorável e a sobrevida longa, mas ela está relacionada ao grau de diferencia o tumoral, tamanho, localiza o do tumor, estadiamento no momento do diagnóstico, eficácia da terapêutica adotada e à aderência do paciente ao seguimento após o tratamento. BACKGROUND: Neuroendocrine tumors (NETs) are rare, comprising nearly 0.49% of all malignancies. The majority occurs in the gastrointestinal tract. AIM: To analyze the demographic factors, clinicopathologic features, treatment employed, prognostic factors and the oncologic results related to colorectal NETs. METHODS: Between the period from 1996 to 2010 174 patients were treated. From these, 34 were localized in the colon and rectum. Demographic factors,
Fitomassa de adubos verdes e cobertura do solo na regi o do Alto Vale do Jequitinhonha, Minas Gerais = Biomass of green manure and soil cover in the region of Vale do Jequitinhonha, Minas Gerais-Brazil.
Gustavo Ant?nio Mendes Pereira,Daniel Valado Silva,Renan Rodrigues Braga,Felipe Paolinelli de Carvalho
Agro@mbiente On-line , 2012,
Abstract: A aduba o verde constitui prática cultural de relevante impacto positivo em sistemas de produ o agrícola que visam o uso sustentável da terra. Objetivou-se com esse trabalho avaliar o desempenho de seis leguminosas utilizadas para aduba o verde, quanto à produtividade de fitomassa, cobertura do solo e uso da radia o fotossinteticamente ativa na regi o conhecida como Alto Vale do Jequitinhonha em Minas Gerais. O experimento foi conduzido entre os meses de mar o a outubro de 2010, em delineamento em blocos casualizados com quatro repeti es. Os adubos verdes utilizados foram: crotalária (Crotalariaspectabilis), feij o-de-porco (Canavalia ensiformis), feij o-guandu-an o (Cajanus cajan), lab-lab (Lablab purpureus), mucuna-an (Mucuna deenringiana) e tremo o-branco (Lupinus albus L.). Os adubos verdes apresentaram elevadas produ es de fitomassa, mas com diferentes picos de cobertura do solo e intercepta o da radia o. Os maiores acúmulos de matéria seca e fresca foram observados pela crotalária seguido pelo feij o-guandu-an o. Entre as espécies estudadas, o feij o-de-porco é aque apresentou maior período vegetativo, representando elevado potencial para recobrimento do solo, destacando-se também na intercepta o de radia o fotossinteticamente ativa.Green manuring is a positive practice that reduces the impact on agricultural production systems aimed at sustainable land use. The objective of this study was to evaluate the performance of six legumes used for green manure, the productivity of biomass, land cover and use of photosynthetic active radiation in the region of the Vale do Jequitinhonha, Minas Gerais, Brazil. The experiment was conducted during March to October, 2010 in randomized block design with four replications. Green manures were used: Crotalaria spectabilis, Canavalia ensiformis, Cajanus cajan, Lablab purpureus, Mucuna deenringiana and Lupinus albus. Green manures had high yields of biomass, however, different peaks of ground cover and radiation interception were observed. The largest accumulations of dry and fresh matter were observed in C. spectabilis followed by C. cajan. Amongthe species studied, C. ensiformis has a larger growing season, representing great potential for soil covering, and is importantfor the interception of photosynthetically active radiation.
Varia??o nos atributos do solo em sistemas de manejo com adi??o de cama de frango
Valado, Franciele Caroline de Assis;Maas, Kelly Dayana Benedet;Weber, Oscarlina Lúcia dos Santos;Valado Júnior, Daniel Dias;Silva, Tonny José da;
Revista Brasileira de Ciência do Solo , 2011, DOI: 10.1590/S0100-06832011000600022
Abstract: poultry litter is an organic fertilizer with good agronomic characteristics, which serves well as conditioner of soil physical properties. in this sense, the objective of this study was to verify changes in soil properties in no-tillage systems with poultry litter. the study was conducted on a sandy loam oxisol under continuous no-tillage in the last years, with rotation of mainly soybean, corn, cotton, and millet, with evaluations in three layers (0-10, 10-20, 20-30 cm), in three replications. the treatments consisted of a mineral fertilizer system (s2), application of raw poultry litter (s3), application of chicken manure compost (s4) and an untreated area with native vegetation (s1). the management systems induced the degradation of soil properties in relation to native vegetation (s1) in ascending order - s4, s2, s3, which was quantified by the reduced values of total carbon, aggregate diameter and stability, macroporosity, hydraulic conductivity saturated and higher values of density and resistance to penetration and microporosity. raw poultry litter was more advantageous for the availability of total n and less efficient to ensure the soil physical quality. composted chicken litter resulted in properties that were more similar to natural conditions.
Varia??o de atributos físico-hídricos em latossolo vermelho-amarelo do Cerrado mato-grossense sob diferentes formas de uso
Silva, Geovani José;Valado Júnior, Daniel Dias;Bianchini, Aloísio;Azevedo, Emílio Carlos de;Maia, Jo?o Carlos de Souza;
Revista Brasileira de Ciência do Solo , 2008, DOI: 10.1590/S0100-06832008000500034
Abstract: the search for production forms that meet the increasing worldwide demands, maintaining the potential of the natural resources and in a systemic view of the social, economic and environmental sustainability, must be everybody's interest and above all a concern of professionals of agrarian sciences. aiming at a contribution in this direction, the effect of no-till and cultivated pasture production on the physical and water properties of a typic haplustox (distrophic red-yellow latosol) were evaluated. the study was conducted on a private farm (lat 15 ° 31 ' 58 " s, long, 55 ° 18 ' 07 " w, at 726-809 m asl) in a gentle sloping topography. ten randomly chosen points in a maize field under no-till management (pd for eight years), brachiaria humidicola pasture (pc - grazed for seven consecutive years), and native cerrado pasture (cp) were tested for soil resistance to mechanical penetration (rsp) and sampled in the layers 5-10 and 10-15 cm. in the disturbed samples the current water content (ca), particle texture and density (dp) were determined, and in the undisturbed samples the total porosity (pt), macroporosity (ma) and microporosity (mi), saturated soil water conductivity (ks), characteristic curves of soil water retention, and bulk density (ds), as well as the available water content (ad). the data were submitted to analysis of variance and the averages compared at p < 0.05, using a completely randomized design with split plots (3 soil uses x 2 sampling depths). in the soils under pd an increase of up to 13.38 % was observed in ds, 45.83 % in srp, 29.81 % in ad and decreases of up to 45.61 % in ma and up to 91.89 % in ks. the magnitude of effects on soil properties were ranked as follows: pd > pc > cp. the rsp, ma and ks were the attributes most affected by the distinct soil uses.
Ocorrência de plantas daninhas no sistema lavoura-pecuária em fun??o de sistemas de cultivo e corretivo de acidez
Braga, Renan Rodrigues;Cury, Jo?o Pedro;Santos, Jose Barbosa dos;Byrro, Eliza Catharina Mota;Silva, Daniel Valado;Carvalho, Felipe Paolinelli de;Ribeiro, Karina Guimar?es;
Revista Ceres , 2012, DOI: 10.1590/S0034-737X2012000500010
Abstract: studies on the interaction among weeds, crops and planting systems can provide new systems of pasture introduction, recovering, and renovation. this research aimed to study weed phytosociology in pasture implanted in the fallow cropping. considering the need of liming application, the treatments followed the combination of two planting systems (no-tillage and plowing followed by harrowing) and four soil ph adjustment levels (0, 1/3, 1/2 and 1 time of the recommendation). it was observed that sida species showed higher importance value indexes in all treatments. sida urens and sida rhombifolia were the most representative. importance value indexes of plants from the genus sida were increased with corrective rates, showing maximum values with half of recommended lime rate, with posterior decrease. besides grasses and forage legumes which can benefit the system, other species toxic to animals occurred. perennial grasses showed higher importance value index under conventional planting than in no-tillage system, making possible the use of specific herbicides in conventional system. comparing no-tillage and conventional systems, the similarity index was 81.1%, which is considered high. in general, conventional planting system showed even higher weed density than no-tillage in the implementation of the integration system .
Establishment of Xaraés and Marandu grasses under levels of soil compaction
Bonfim-Silva, Edna M.;Valado Júnior, Daniel D.;Reis, Rafael H. P. dos;Campos, Jader J.;Scaramuzza, Walcylene L. M. P.;
Engenharia Agrícola , 2012, DOI: 10.1590/S0100-69162012000400012
Abstract: in cerrado soils under grazing, changes occur in physical attributes, such as increased density, decreasing on the size of water stable aggregates, and macroporosity reduction. thus, the aim of this study was to study the effect of compaction on the establishment of two forages. it was adopted a completely randomized design with three replications, in 2 x 4 factorial design, and two forages (xaraés grass and marandu grass), and four levels of compaction (soil densities of 1.0, 1.2, 1.4, and 1.6 mg m-3). the following variables were evaluated 48 days after sowing: tiller population, plant height, dry matter production of shoots and components, leaf and stem, as well as the root dry mass. the stem dry mass decreased with soil density in a similar manner for both forages. it was observed that the leaf dry mass and shoots dry mass of xaraés grass remained constant in the levels of soil compaction, not adjusting to any regression model. the establishment of xaraés grass has not been negatively affected by compaction, which may be suitable for situations where there may be layers that restrict the growth of different forages.
Crescimento da mandioca e plantas daninhas em resposta à aduba??o fosfatada
Pereira, Gustavo Ant?nio Mendes;Lemos, Vinícius Teixeira;Santos, José Barbosa dos;Ferreira, Evander Alves;Silva, Daniel Valado;Oliveira, Maxwel Coura de;Menezes, Claubert Wagner Guimar?es de;
Revista Ceres , 2012, DOI: 10.1590/S0034-737X2012000500019
Abstract: fertilizers may be used to change the competitive relations, favoring the crop species, providing the competing species have different responses to the nutrient application. thus, the aim of this study was to evaluate the growth of cassava plant, bidens pilosa l. and brachiaria decumbens stapf, as a function of the amount of p supplied at planting. the experiment was conducted in a greenhouse and the, treatments were arranged in a 3 x 4 factorial, involving the three species studied and four levels of phosphate fertilization (absence of p2o5, 80 kg ha-1, 800 kg ha-1 and 4000 kg ha-1 p2o5, equivalent to 0, 1, 10 and 50 times the phosphorus dose recommended, respectively). a randomized block design was used, with five replications. the application of phosphate fertilizer promoted larger growth of the species evaluated, and cassava had higher growth of the shoot with the increased availability of phosphorus. in general, weeds showed higher responses to lower doses of phosphorus.
A Model of DENV-3 Infection That Recapitulates Severe Disease and Highlights the Importance of IFN-γ in Host Resistance to Infection
Vivian V. Costa equal contributor,Caio T. Fagundes equal contributor,Deborah F. Valado,Daniel Cisalpino,Ana Carolina F. Dias,Kátia D. Silveira,Lucas M. Kangussu,Thiago V. ávila,Maria Rosa Q. Bonfim,Daniela Bonaventura,Tarcília A. Silva,Lirlandia P. Sousa,Milene A. Rachid,Leda Q. Vieira,Gustavo B. Menezes,Ana Maria de Paula,Alena Atrasheuskaya,George Ignatyev,Mauro M. Teixeira,Danielle G. Souza
PLOS Neglected Tropical Diseases , 2012, DOI: 10.1371/journal.pntd.0001663
Abstract: There are few animal models of dengue infection, especially in immunocompetent mice. Here, we describe alterations found in adult immunocompetent mice inoculated with an adapted Dengue virus (DENV-3) strain. Infection of mice with the adapted DENV-3 caused inoculum-dependent lethality that was preceded by several hematological and biochemical changes and increased virus dissemination, features consistent with severe disease manifestation in humans. IFN-γ expression increased after DENV-3 infection of WT mice and this was preceded by increase in expression of IL-12 and IL-18. In DENV-3-inoculated IFN-γ?/? mice, there was enhanced lethality, which was preceded by severe disease manifestation and virus replication. Lack of IFN-γ production was associated with diminished NO-synthase 2 (NOS2) expression and higher susceptibility of NOS2?/? mice to DENV-3 infection. Therefore, mechanisms of protection to DENV-3 infection rely on IFN-γ-NOS2-NO-dependent control of viral replication and of disease severity, a pathway showed to be relevant for resistance to DENV infection in other experimental and clinical settings. Thus, the model of DENV-3 infection in immunocompetent mice described here represents a significant advance in animal models of severe dengue disease and may provide an important tool to the elucidation of immunopathogenesis of disease and of protective mechanisms associated with infection.
Inocula??o das sementes e aduba??es nitrogenada e molíbdica do feijoeiro-comum, em Rolim de Moura, RO
Valado, Franciele Caroline de Assis;Jakelaitis, Adriano;Conus, Lenita Aparecida;Borchartt, Lucas;Oliveira, Abdias Alves de;Valado Junior, Daniel Dias;
Acta Amazonica , 2009, DOI: 10.1590/S0044-59672009000400002
Abstract: the aim of this study was to evaluate the effects of seed inoculation with rhizobium tropici and nitrogen and molybdenum fertilization on the performance of the common-bean (phaseolus vulgaris l.). a complete randomized block design with four replicates was used, in a factorial arrangement 2x2x2, with the combinations of absence and presence of seed inoculation and nitrogen (n) and molybdenum (mo) fertilization. seeds inoculation was just before sowing with a peat inoculante composed by the strain ciat 899 (semia 4077), n was provided at sowing (10 kg.ha-1) and coverage (50 kg.ha-1) when the plants showed the third trifoliate sheet expand and mo was applied by foliar spraying with 60 g.ha-1 when plants were at beginning of flowering . no effect of treatments on the dry mass of roots and the number of pods per plant was observed. n fertilization reduced nodulation of plants, however, n fertilization lead to an increase in height and dry mass of bean shoots. it was also observed that plants fertilized with n but in the absence of mo shoed heavier grains. the interactions between n and mo fertilization with inoculation of seed negatively affected the leaf n content and the number of grains per pod. the inoculation of seed in beans provided grain yields similar to those provided by the treatment with n fertilization.
Justaposi??es da estratégia como prática e processo de estratégia: antes da vis?o pós-processual da estratégia
Valado, José de Arimatéia Dias;Silva, Soraya Sales dos Santos e;
RAM. Revista de Administra??o Mackenzie , 2012, DOI: 10.1590/S1678-69712012000200007
Abstract: this paper discusses the juxtapositions between the strategy as practice and strategy process, aiming to link the two types of approaches to strategic. this research is justified by the fact that the strategy as practice has gained strength and there are many studies that have stood out within the research strategy. the strategy in this perspective is seen as a social practice and seeks to understand how strategy practitioners act and interact. his proposal is now being compared with the process view and many researches have been engaging at the same time, the strategy process and strategy as practice, either within or outside the organizational context. the strategy process, in turn, is much more than a simple plan as originally conceived, involving behavior, action, reflection and patterns that emerge incrementally between past and future, thinking and acting, modeling and development. these relationships are developed in the timing of the internal and external environment that continuously interact and delineate the process of change in resource allocation and planning as well as search by company's competitive advantages. given the proximity of these theoretical relationships, this study proposes to determine what the juxtapositions of the strategy process and strategy as practice in making strategic organizations. methodologically, the paper sought to build a line to the theoretical concepts of strategy process and strategy as practice, then associate the concepts covered by the identification of inter-theoretical relationships between them, and make a proposition for integrating these concepts in making strategic. it could be observed that the feeding practices and processes these will continually shaping and restructuring processes in making strategic, carried over the strategic choices made by individuals who are influenced by the practices are socially constructed and culturally accepted. the strategy is evident when do actors and practices, structure, cont
第1頁/共184645條
每頁顯示


Home
Copyright ? 2008-2017 Open Access Library. All rights reserved.

久草在现在线中文字幕