منابع مشابه
Multifocal osteonecrosis secondary to occupational exposure to aluminum
Multifocal osteonecrosis is a rare disease; chronic use of corticosteroids is considered the main risk factor. Patients with chronic renal failure can develop aluminum toxicity, which can lead to osteomalacia and encephalopathy. An association between osteonecrosis and aluminum toxicity has been reported among patients with dialytic renal insufficiency. Occupational exposure to aluminum rarely ...
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showed serum creatinine (sCr) 7.5mg/dl, urea 280mg/dl, sodium 139mEq/l, potassium 6.8mEq/l, calcium 0.98mmol/l, phosphorus 8.6mg/dl and creatine kinase 602 234 IU/l. Haematological examination showed the presence of leukocytosis (16.7 10/l) only, with no anaemia (haemoglobin 13.7mg/dl) or thrombocytopaenia (456 10/l). Fractional excretion of sodium was 0.8% and the urinary excretion of potassiu...
متن کاملSilicon Ingot Characterization by Quasi-Steady-State Photoconductance
The detailed knowledge of the distributions of carrier lifetimes, impurities and crystal defects in silicon ingots is key for understanding and improving wafer quality as well as solar cell processing steps. In this work, we have applied a quasi-steady-state photoconductance tester developed for the use on ingots to the measurement of lifetimes and dissolved iron concentrations along a p-type m...
متن کاملDevelopment of Multi-wire Edm Slicing Method for Silicon Ingot
INSTRUCTIONS The diameter of silicon wafer becomes larger in order to increase the number of chips per one wafer. For such a larger diameter silicon ingot is mainly sliced by using multi-wire method, in which a long thin wire is used with slurry. In this method, several hundreds of wafers could be sliced at the same time. However there are still problems remained, such as large cracks, slurry t...
متن کاملTransition-metal profiles in a multicrystalline silicon ingot
The concentrations of transition-metal impurities in a photovoltaic-grade multicrystalline silicon ingot have been measured by neutron activation analysis. The results show that the concentrations of Fe, Co, and Cu are determined by segregation from the liquid-to-solid phase in the central regions of the ingot. This produces high concentrations near the top of the ingot, which subsequently diff...
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ژورنال
عنوان ژورنال: Journal of Japan Institute of Light Metals
سال: 1985
ISSN: 0451-5994
DOI: 10.2464/jilm.35.121