نتایج جستجو برای: diffuse and global radiation

تعداد نتایج: 16949915  

Journal: :iranian journal of radiation research 0
m.m.a. mamun department of biotechnology and genetic engineering, islamic university, kushtia‐7003, bangladesh

background: the earlier atomic bomb explosion in hiroshima and nagasaki, and three worth mentioning nuclear accidents - detonation at fukushima daiichi nuclear plant, chernobyl nuclear fallout and an accident at three mile island nuclear power plant have made us more worried about the secure exploitation of nuclear energy. the central focus of this paper is to review radiation-mediated health e...

Journal: :Ciência e Natura 2021

This study aimed to analyze the seasonal variations in atmospheric transmissivity and solar radiation (global diffuse) on horizontal surface Sinop, Mato Grosso (MT) (11.865°S, 55.485°W, altitude of 371 m) from 06/02/2011 12/31/2014. The values diffuse were measured using Melo-Escobedo-Oliveira (MEO) shadow ring, with application astronomical, geometric, anisotropic correction factors. analysis ...

Journal: :International Journal on Advanced Science, Engineering and Information Technology 2022

Hourly solar radiation information is necessary to increase the effectiveness of photovoltaic (PV) energy systems. However, compared with daily average radiation, measurement hourly much less available. In this study, a multilayer perceptron artificial neural network based on proposed estimate amount radiation. The method also relies location PV system, hour when needed, and month needed. Two s...

2005
F. Liang X. A. Xia

Long-term trends in downwelling solar irradiance and associated climatic factors over China are studied in the paper. Decreasing trends in global and direct radiation are observed over much of China. The largest decrease occurs in South and East China (east of about 100 E and south of about 40 N). The spatial pattern of observed trends in diffuse irradiance is complex and inhomogeneous. An intr...

2003
Alexander Vasilkov Nickolay Krotkov Jay Herman Charles McClain Kevin Arrigo Wayne Robinson

The global stratospheric ozone-layer depletion results in an increase in biologically harmful ultraviolet (UV) radiation reaching the surface and penetrating to ecologically significant depths in natural waters. Such an increase can be estimated on a global scale by combining satellite estimates of UV irradiance at the ocean surface from the Total Ozone Mapping Spectrometer (TOMS) satellite ins...

2005
Frank Vignola Peter Harlan Richard Perez Marek Kmiecik

Images from the GOES 8 satellite were used along with auxiliary information such as snow cover to produce an hourly solar radiation database on a 0.1° grid for the Pacific Northwest from 1998 through 2002[1]. Both global and beam irradiance values were derived from the satellite images and diffuse values were calculated from the beam and global values. Data from the University of Oregon Solar R...

Journal: :iranian journal of radiology 0
hamid behroozi department of radiologic technology, faculty of paramedicine, jundishapur university of medical sciences, ahvaz, iran; department of radiologic technology, faculty of paramedicine, jundishapur university of medical sciences, p.o. box: 61357-15794, golestan, ahvaz, iran. tel: + 98-6113738317e, fax: + 98-6113738330 mohammad davoodi department of radiologic technology, faculty of paramedicine, jundishapur university of medical sciences, ahvaz, iran shahriar aghasi department of radiologic technology, faculty of paramedicine, jundishapur university of medical sciences, ahvaz, iran

background the present data show a global increase in the rate of cardiovascular disease. cardiac ct angiography has developed as a fast and non-invasive cardiac imaging modality following the introduction of multi-slice computed tomogaraphy. conclusions the total mean radiation dose to the thyroid and gonads was 0.36 msv, and 96.5 μsv, respectively for the subjects. these values were high for ...

Journal: :Japanese Journal of Health Physics 1991

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