Wavelet analysis offers an alternative to Fourier based time-series analysis and is particularly useful when spectral features are time dependent. We analyze the solar neutrino capture rate of the radiochemical Homestake chlorine experiment with abbreviated Morlet wavelets, using Foster’s (AJ, 111,1709(1996)) rescaled wavelet technique. We emphasize the complementarity of wavelet analysis to Fo...

The purpose of this study was to determine the 10-yr cumulative incidence of hearing impairment and associations of education, occupation and noise exposure history with the incidence of hearing impairment in a population-based cohort study of 3753 adults ages 48-92 yr at the baseline examinations during 1993-1995 in Beaver Dam, WI. Hearing thresholds were measured at baseline, 2.5 yr-, 5 yr-, ...

The aim of the present study was to estimate the population parameters including length-weight relationship (LWR), condition factor (KF), relation condition factor (Kn), age, growth and mortality of Alburnus mossulensis in Azad dam and Komasi River in Kordestan Province, Iran. Of 522 specimens, the fork length, total length and weight of A. mossulensis ranged from 70 to 164, 75-175 mm, and 4.3 ...

producing biogas is the most common method of energy generation in municipal and industrial wastewater treatment plants in the world. methane production rate depends on degradation rate of organic pollutants in wastewater, temperature and treatment process. typical parameters for assessment of organic wastewater such as bod or cod indicate the potential to produce methane. there is no accurate ...

food security in the world that water shortages are faced is very important, especially in arid regions. effects of climate change on agricultural water requirement have doubled this importance. in this study, the risk of water demand has been assessed for a wide range of products under climate change. aogcm models have been used to simulate climate variables. the climate change scenarios of cl...

background: a growing body of investigations demonstrated the essence role of zinc on growing and maintaining bone tis sue .the idea that zinc could enhance bone content and adjourn or prevent osteoporosis in men, has been experimented as a hy pothesis. methods: six hundred healthy men (age 20-69 yr) through iranian multicenter osteoporosis study (imos) which is a na tional project running in 5...

background: the effect of natural background radiation on health is still controversial. however, it is clear that it depends on the dose received by the population. the estimation of external natural background gamma rays received by the population of caspian coastal provinces in the northern part of iran was the main goal of this study. materials and methods: gamma rays was measured using cal...

Repeated oocyte collection by transvaginal ultrasound-guided follicular puncture (Ovum Pick-Up: OPU), implicitly associated to in vitro embryo production (IVEP), has become alternative and competitive to superovulation for embryo production in cattle. It is alternative because it can be applied successfully irrespective of the reproductive status of the donor, i.e. in pregnant and acyclic anima...

A case of a 14-yr-old female with necrotizing sarcoid granulomatosis (NSG) is presented. She was referred because of chest pain and malaise, and radiography revealed multiple pulmonary nodules. Her history showed seasonal sensitization to aeroallergens and hay fever. Infectious agents or malignancies did not characterize these nodules. However, she was treated with macrolide antibiotics because...

A 26-yr-old male patient was referred to the outpatient clinic with a history of recurrent respiratory infections since 8 yrs of age and a daily productive cough with purulent sputum. He related nasal sneezing, hoarseness and wheezing episodes to weather changes and exposure to dusts and chemicals. Dyspnoea on exertion was present during exacerbations. He had never smoked and denied any family ...