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Evidence for the efficacy of a metacognitive and social cognition training prog...

Organotin(IV) complexes with 2-acetylpyridine benzoyl hydrazones: antimicrobial...

Reaction of n-butyltin trichloride, [Bu nSnCl3], and phenyltin trichloride, [PhSnCl3], with 2-acetylpyridine benzoyl hydrazone (H2AcPh), 2-acetylpyridine para-chloro-benzoyl hydrazone (H2AcpClPh) and 2-acetylpyridine para-nitro-benzoyl hydrazone (H2AcpNO2Ph) gave [Bu nSn(2AcPh)Cl2] (1), [Bu nSn(2AcpClPh)Cl2] (2), [Bu nSn(2AcpNO2Ph)Cl2] (3), [PhSn(2AcPh)Cl2] (4), [PhSn(2AcpClPh)Cl2] (5) and [PhSn(2AcpNO2Ph)Cl2] ...

Caracterização dos componentes de rendimento de óleo do pinhão-manso (Jatropha ...

Neste trabalho foram estimados os efeitos diretos e indiretos de características vegetativas e de qualidade da matéria-prima sobre o rendimento de óleo do pinhão manso. Com este objetivo foram caracterizados 236 acessos selecionados ao acaso dentro de população de pinhão manso com 36 meses de cultivo em Ariquemes-RO para as seguintes características: "altura de plantas" (m.arv-1), "número de ramos secundários",...

Características das cultivares de abacaxizeiros cultivadas no estado de Rondônia.

O objetivo dessa publicação é a complementaridade de informações ao sistema de produção para abacaxicultura em Rondônia, quanto às características e comportamento agronômico das quatro principais cultivares comerciais de abacaxi ('Pérola', 'Perolera', 'Quinari' e 'Smooth Cayenne') destinadas ao consumo de mesa (in natura) e para multiusos nas indústrias caseiras e alimentícias na forma de polpas congeladas, doc...

Tribocorrosion behaviour of plasma nitrided and plasma nitrided+oxidised Ti6Al4...

This paper reports the influence of low pressure plasma nitriding treatments, some of them followed by plasma assisted oxidation on the mechanical properties and tribocorrosion resistance of a Ti6Al4V alloy. Nitridation was performed for 640 or 720 min at 600 and 700 °C in a r.f. plasma equipment, using a N2–H2 gas mixture at 7.5 Pa. Some of the samples were then post-oxidized at 700 °C for 15 and 60 min, withi...

Progress in the use of scanning electron microscopy (SEM) applied to the taxono...

The scanning electron microscope (SEM) has been a major tool in detailed morphological observations of plant parasitic nematodes during the last 30 years, efficiently complementing light microscopical (LM) studies. Nematodes are extremely difficult to observe and characterize due to their small size (aprox. 1 mm long) and paucity of morphological characters, so detailed surface observations of several organs an...

Tribocorrosion studies on commercially pure titanium for dental applications

Tribocorrosion refers to a complex degradation of materials occurring due to the interaction between a tribological process and a corrosive environment. From the tribological point of view, the interaction with the material may include sliding or abrasive wear, erosion, impact, fretting or fatigue processes. The environmental solicitation may result from temperature, humidity, liquids or gases in permanent or i...

Wear mechanisms in functionally graded aluminium matrix composites : effect of ...

Abstract. Functionally graded aluminium matrix composites reinforced with SiC particles are attractive materials for a broad range of engineering applications in the automotive, aircraft, sports, military and aerospace industries, whenever a superior combination of surface and bulk mechanical properties are required. In general, these materials are developed for the production of high wear resistant components....