441 research outputs found
Lithics from Thung Binh 1 (clockwise from upper left): Short axe, flake tools (photo by author).
No full textLithics from Thung Binh 1 (clockwise from upper left): Short axe, flake tools (photo by author).</p
Lithics from Thung Binh 3 (clockwise from upper left): Core tool, flake tools (photo by author).
No full textLithics from Thung Binh 3 (clockwise from upper left): Core tool, flake tools (photo by author).</p
EXPRESSION OF SQUAMOUS CELL CARCINOMA ANTIGEN (SCCA) VARIANTS IN HEPATOCELLULAR CARCINOMA AND ITS PRECURSOR
No full textAdoção de cultivares melhoradas de feijão em estados selecionados no Brasil.
No full textA produção brasileira de feijão-comum (Phaseolus vulgaris L.) tem sido possível em níveis de 2,5 milhões de t/ano, pela expansão das áreas, apesar do insistente declínio em produtividade e disponibilidade per capita. A EMBRAPA-CNPAF (Centro Nacional de Pesquisa de Arroz e Feijão) e o CIAT (Centro Internacional de Agricultura Tropical, com mandato mundial para desenvolvimento do feijão), em 1981, iniciaram colaboração enfatizando a geração de linhagens melhoradas da cultura. Um estudo de adoção foi conduzido para avaliar o impacto de novas variedades lançadas pelo programa, em colaboração com as Empresas Estaduais de Pesquisa Agropecuária em Goiás (00), Espírito Santo (ES), Rio de Janeiro (RJ) e Minas Gerais (MG). Em 75% da área (812 milha) plantada com feijão na região estudada utilizaram-se cultivares melhoradas. A Carioca, lançada pelo IAC (Instituto Agronômico de Campinas), é o material mais plantado - em 48% da área. Cultivares desenvolvidas no programa colaborativo (CIAT-CNPAF e Empresas Estaduais de Pesquisa) ocupam 25% da área. Outros 2% da área são plantados com outras cultivares nacionais. As cultivares colaborativas superam as cultivares tradicionais em 195 kg/ha em sistema solteiro e em 128 kg/ha em sistema consorciado. O impacto monetário da adoção foi estimado em 40 milhões de dólares em 1991, dos quais 45% são devidos à participação das novas cultivares do sistema colaborativo. A cultivar Carioca e as cultivares melhoradas ainda não atingiram seu teto de adoção. Com o tempo, EMGOPA Ouro, Serrano e BR-1 Xodó têm perspectivas de difusão mais ampla. Em dois estados observou-se a difusão simultânea de várias cultivares, sugerindo que a estratégia de lançamentos múltiplos é possível. A adoção de novas cultivares ocorreu mesmo sob condição de mercado depressivo, proporcionando aumento da oferta, contribuindo para a manutenção de preços estáveis e beneficiando populações de renda mais baixa
Intrahepatic expression of hepatitis B virus antigens: effect of hepatitis C virus infection.
No full textA System of Classifying Microvascular Invasion to Predict Outcome After Resection in Patients With Hepatocellular Carcinoma
No full textAbstract
Hepatocellular carcinoma (HCC) recurs in approximately 70% of cases after resection. Vascular invasion by tumor cells can be classified as gross or microscopic (microvascular invasion [mVI]) and is a risk factor for recurrence. We examined a large cohort of patients with HCC who were treated by resection to identify features of mVI that correlated with recurrence and survival.
METHODS:
We reviewed the records of all HCC resections performed at the Mount Sinai School of Medicine between January 1990 and March 2006 to identify those with mVI, established by histologic analysis. The numbers and sizes of vessels invaded, invasion of a vessel with a muscular wall, distance from the tumor, and satellite nodules were recorded.
RESULTS:
Of the 384 patients who underwent resection for HCC, 131 (34.1%) met the entry criteria. The median follow-up period was 28.9 months. There were 68 recurrences and 54 deaths. In multivariate analysis, invasion of a vessel with a muscular wall predicted recurrence (hazard ratio, 1.8; P = .02), and invasion of a vessel with a muscular wall (hazard ratio, 2.2; P = .018) and invasion of a vessel that was more than 1 cm from the tumor (hazard ratio, 2.1; P = .015) predicted survival. A risk score that assigned points for the presence of each variable correlated with recurrence (P = .028) and survival (P < .0001).
CONCLUSIONS:
A novel classification system that includes invasion of a vessel with a muscular wall and invasion of a vessel that is more than 1 cm from the tumor can accurately predict risk of recurrence and survival of patients with mVI after resection of HCC.
Comment i
Sistema de produção do feijoeiro comum em várzeas tropicais: época de plantio.
No full textNo planejamento da agricultura, mais que em qualquer outro setor da economia, devem ser consideradas as características climáticas da região, visto que afetam, sobremaneira, o desempenho do setor, sendo de suma importância que o produtor tenha conhecimento sobre a interação dos elementos climáticos e o desenvolvimento vegetal. O trabalho visa investigar a época de plantio do feijoeiro comum
Boring sponges from the Ha Long Bay (Tonkin Gulf, Vietnam)
No full textSponges of Vietnam are poorly known (Lévi 1961) particularly excavating sponges. In 1898, Lindgren recorded 20 species from Nha Trang (southern Vietnam), none of them excavating. The only paper entirely devoted to the sponge fauna of Vietnam was written by Lévi (1961), who recorded 28 species from Nha Trang, but included no excavating sponges. Excavating sponges from Vietnam were reported by Dawydoff (1952) in a paper on the Indo-Chinese marine benthic fauna, but the most complete reference regarding the area is a checklist of sponges recorded from the South China Sea by (Hooper et al. 2000). During 4 surveys performed from 2002 to 2004, 9 species of boring sponges were recorded from Ha Long Bay, on the northern coast of Vietnam: Cliona aurivilli (Lindgren 1897), C. celata Grant, 1826, C. orientalis Thiele, 1900, Cliothosa hancocki (Topsent 1888), Pione carpenteri (Hancock 1826), Spirastrella decumbens Ridley, 1884, S. solida Ridley and Dendy, 1886, S. tentorioides Dendy, 1905, and Aka mucosa (Bergquist 1965). Cliona orientalis, P. carpenteri, S. decumbens, S. tentorioides Dendy 1905, and A. mucosa are new records from the Tonkin Gulf, whereas all the other species are already known from Vietnam. The aim of this paper was to make an initial contribution to the knowledge of the Vietnamese excavating sponges in the Tonkin Gulf, northern Vietnam
Verslag behorende bij het processchema: Azijnzuuranhydride uit azijnzuur volgens het keteen-proces
No full textDocument(en) uit de collectie Chemische ProcestechnologieDelftChemTechApplied Science
Thung Phudson
No full textThe author illustrates that the garden of Fortune cape jasmine (Gardenia Jasminoides) --a kind of flower called Phudson in Thai-- was once located in Lopburi near one of the palaces of King Narai. But there is currently no evidence of the flower garden left, apart from records from the French missionary's chronicles
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