BACKGROUND: self-expanding metal stents are currently being used as a definitive palliative treatment for malignant colorectal obstruction in patients with incurable disease. Few studies have followed large numbers of patients from stent placement until death, and those few have reported conflicting results in the long-term clinical outcome data. AIMS: this study evaluated the clinical effectiveness of stent p...
Nitric oxide (NO) is involved in the pathogenesis of acute and chronic inflammatory conditions, namely in allergic contact dermatitis (ACD). However, the mechanism by which NO acts in ACD remains elusive. The present study focuses on the effects of different contact sensitizers (2,4-dinitrofluorbenzene, 1,4-phenylenediamine, nickel sulfate), the inactive analogue of DNFB, 2,4-dichloronitrobenzene, and two irrit...
O objetivo básico deste trabalho é apresentar algumas informações e procedimentos que devem nortear o planejamento da recomendação de adubação de viveiro, campo, fundamentais na produção de mudas e estabelecimento de povoamentos florestais e avaliação da necessidade de adubação. ; 2005
In this work several structural and chemical properties of self-assembled InAs islands grown on GaAs(001) are studied using surface x-ray scattering with synchrotron radiation. The technique of x-ray diffraction under grazing incidence condition was employed to differentiate coherent and incoherent islands. We used a model of a strained pyramidal island to interpret the x-ray results and correlate size and stra...
Introdução; Origem e descrição botânica do Nim; Adaptação da planta: clima e solo; Práticas culturais: produção de mudas; formação de mudas a partir de sementes; semeadura em canteiros e repicagem de mudas; semeadura direta em recipientes; cultura de tecidos; preparo do solo; Cultivo: espaçamento; coveamento ou sulcamento; plantio; tratamento fitossanitário - combate às formigas; Colheita: secagem dos frutos; P...
A análise estrutural de materiais experimentou um grande avanço nos últimos anos, associado ao desenvolvimento das técnicas de Microscopia de Varredura por Sonda Mecânica, surgidas na década passada e consolidadas nos anos 90. Trata-se de um enfoque analítico inteiramente original, envolvendo conhecimento e tecnologia multidisciplinar, de amplo espectro de aplicação, devido, principalmente, à resolução em escal...
Nomes comuns; Classificação; Posição como praga; Ambiente; Distribuição no Brasil; Desenvolvimento e descrição; Ciclo biológico; Potencial biótico; Hábitos; Hospedeiros alternativos; Danos; Manejo; Praticas culturais; Resistência varietal; Controle biológico; Inseticidas; Monitoramento; Níveis críticos. ; 1997
From 1950 to 1990 a total of 45,862 strains (31,517 isolates from human sources, and 14,345 of non-human origin) were identified at Instituto Adolfo Lutz. No prevalence of any serovars was seen during the period 1950-66 among human sources isolates. Important changing pattern was seen in 1968, when S. Typhimurim surprisingly increased becoming the prevalent serovar in the following decades. During the period of...
A total of 574 S. Enteritidis strains (383 from human sources and 191 from non-human sources) isolated between 1975-95, in São Paulo State, Brazil, were phagetyped. Among the strains isolated during the period of 1975-92, 80.9% of them belonged to phage type 8 (PT-8), but in 1993 strains of PT-4 accounted for 65.2% of all the S. Enteritidis isolates. In the following years, PT-4 strains accounted for 99.7% and ...
Serovars of a total of 5,490 Salmonella strains isolated during the period of 1991-95, from human infections (2,254 strains) and from non-human materials (3,236 strains) were evaluated. In the studied period, 81 different serovars were determined among human isolates. Salmonella Enteritidis corresponded to 1.2% in 1991, 2% in 1992, 10.1% in 1993, 43.3% in 1994, and 64.9% in 1995 of all isolates. A significant r...
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