in this study, he’s variational approach (va) is used to solve the non-naturalvibrations and oscillations. the method works very well for the whole range of initial amplitudesand does not demand small perturbation. it is also sufficiently accurate to both linear and nonlinearphysics and engineering problems. we consider some examples to illustrate the effectiveness andconvenience of the method....

BACKGROUND Agricultural environments are contaminated with organic dusts containing bacterial components. Chronic inhalation of organic dusts is implicated in respiratory diseases. CD14 is a critical receptor for gram-negative lipopolysaccharide; however, its association with respiratory disease among agricultural workers is unknown. The objective of this study was to determine if serum soluble...

Large scale hydrologic systems include complex interactions and recursions among different physical processes. To duplicate real world phenomenon, sophisticated simulation models usually enclose large number of parameter sets and the calibration process can be extremely difficult. Up to date, Bayes’ theory has been widely adopted to develop efficient parameter searching techniques. In this stud...

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Background: Knowledge of variations in the origin of vertebral artery (VA) is indispensable to vascular surgeons. Aberrant origin of vertebral artery on either side is an uncommon finding. There are unilateral and bilateral variability in VA origin. Case presentation: We present a case of vertebral artery dissection who was found to have bilateral VAs aberrant origin. The right VA took origin ...

(1) The Eli and Edythe Broad Center of Regeneration Medicine and Stem Cell Research, (2) Center for Reproductive Sciences, (3) Department of Urology, (4) Department of Epidemiology and Biostatistics (5) Division of Hematology and Oncology, Department of Medicine, (6) Department of Pathology and (7) UCSF – Helen Diller Family Comprehensive Cancer Center, University of California San Francisco, S...