Este trabalho mostra as reações entre 2-trifluoracetil-1-metoxi-1-cicloalquenos (1a-1e) ou 2-trifluoracetilcicloalcanonas e bromo molecular, para produção de ω-bromo-2trifluoracetilcicloalcanonas (3a-3e, 4a). Ficou demonstrado que o grupo 2-trifluoracetil determina o sítio de bromação no C-omega, carbono vizinho à carbonila endocíclica. Os produtos 2-trifluoracetilcicloalcanonas e ω-bromo-α-tri...

rém, ela percebeu que nesses episódios se ingerisse uma barra de chocolate, melhorava muito... Os autores sugerem que o mundo padronize uma única unidade de mensuração, para evitar esse tipo de acidente. Aqui no Brasil já foi sugerida várias vezes uma mudança de método de expressão das unidades de bioquímica, mas nossos médicos já treinados em mg/dl não têm se entusiasmado com a sugestão e pref...

A mosquito study based on collections from horse-baited stable traps was conducted in 1993 and 1994 at 3 sites in geographically and ecologically distinct areas of St. Tammany Parish (southeastern Louisiana) to determine the major horse-feeding mosquito species that could be possible bridging and epidemic vectors of eastern equine encephalomyelitis virus. A total of 4,535 mosquitoes in 1993 and...

Collections: n Lippincott Williams & Wilkins Nursing & Health Professions Premier Collection n LWW China Collection 2011 Q1 n LWW China Collection 2012 Q1 n LWW Eastern European Collection 2011 Q1 n LWW Eastern European Collection 2012 Q1 n LWW India Collection 2011 n LWW OBGYN Journal Collection n LWW Total Access Collection 2012 Q-3 minus Neurology n LWW Total Access Collection 2012 Q-3 Revis...

typically, two configurations are used for energy harvesting, with different advantages: piezoelastic and piezomagnetoelastic. best performance of piezoelastic configuration is limited to its narrow bandwidth around the resonance frequency. if the excitation frequency slightly deviates from the resonance frequency, the power-out is severely reduced. to overcome this, the piezomagnetoelastic has...

Islam spread rapidly after its founding, encompassing much of North Africa, the Middle East, and Southeast Asia. The art of this vast region draws its distinctive character both from Islam itself and from the diverse cultural traditions of the world’s Muslims. Because Islam discouraged the use of figurative images, particularly in religious contexts- unlike Christian art- Islamic artists develo...