in this paper, surface and piezoelectric effects on the vibration behavior of nanowires (nws) are investigated by using a timoshenko beam model. the electric field equations and the governing equations of motion for the piezoelectric nws are derived with the consideration of surface effects. by the exact solution of the governing equations, an expression for the natural frequencies of nws with ...

statins are most effective pharmacologically agents to decrease total plasma cholesterol level by competitive inhibition of hmg-co a reductase. apart from the well-known ldl and cholesterol lowering effect, statins have been postulated to exert other beneficial effects also called pleotropic or non-lipid effects. better understanding of various pleotropic effects of statins has prompted a new s...

Background. Older adults (age > 50 years) continue to represent 17% of the new HIV diagnoses each year in the U.S. and are often diagnosed later in the course of their disease. In 2010, 46% of the newly diagnosed HIV infected adults over 50 had AIDS within 12 months of their diagnosis. These realities led the authors to investigate how HIV risk assessment and testing practices within a primary ...

PURPOSE To identify possible risk factors for the development of posterior vitreous detachment (PVD). DESIGN Retrospective case-control study. METHODS A total of 138 cases with PVD and 114 age-matched controls were accrued from two different sites. Demographic, medical, ocular, and lifestyle data were obtained through chart review, questionnaires, and clinical examination. A 108-item semiqu...