نتایج جستجو برای: major elements
تعداد نتایج: 875617 فیلتر نتایج به سال:
The massive sulphide deposit at Kantienpan Cu-Zn mine is hosted by volcano sedimentary succession known as the Areachap Group, in the eastern part of Namaqua Metamorphic Province, South Africa. The deposits were affected by a complex deformation and metamorphic history and represent examples of upper amphibolite to granulite grade metamorphosed volcanic-hosted m...
the major purpose of this study was to develop the translation teacher competency test (ttct) and examine its construct and predictive validity. the present study was conducted in two phases: a qualitative phase as well as a quantitative phase. in the first phase of the study, the author attempted to find out the major areas of competency required for an academic translation teacher. the second...
Geo-statistical Distribution of Heavy Metals in Karoon River’s Soil by Geographic Information System
Introduction: Soil has an important role in nutrient cycle and an important function in storage, refinement, and movement of nutrients for the living and non-living parts. Soil pollution of heavy metals and elements is one of the common pollution impacts of human activities, especially industry. Realization of distribution pattern of these elements and their anthropogenic sources is a major par...
Edible nuts have an increasing role in human diet. Pistachio is popular but less known kind of edible nut nevertheless it is rich in health benefiting nutrients, minerals, antioxidants and vitamins. This research focused on the concentration of nitrogen (N), phosphorus (P), potassium (K) and calcium (Ca), all of which play a key role in the healthy human nutrition and lifestyle in the kernels o...
فرمول بندی انواع المانهای انتقالی مورد نیاز برای مدلسازی اجزا محدود ی ، سازه های با اجزا متنوع از نظر المانهای مهندسی و تئوری در اینجا ارائه می شود، این المانهای انتقالی عدم سازگاری مربوط به درجات ازادی متفاوت بین المانهای مهندسی و المانهای تئوری در تحلیل های اجزا محدود مذکور را مرتفع می سازند.در مرحله ساختن المانهای انتقالی مابین دو المان مهندسی و تئوری عموما ما المان تئوری را به عنوان مبنا و ...
at the article, the hazardous elements in the repositories have been introduced and preventive measures were brought up by the author. damages to records break up into three major physical, biological and chemical ones such as below: - physical destruction, which comes from heat, humidity, light and dust - biological elements: micro-organisms, bacteria, fungi, moulds, insects and rodents ...
This research introduces a new method for the synthesis of composite granules. The major advantage of this composite granules is absorbing ion of undesirable elements from the flowing waters or wastes as well as being applied for removal of environmental pollution, specially 137Cs as one of the well-known elements which being released in the environment during nuclear accidents. MnO2-PAN ...
Many elements such as Arsenic (As), Cadmium (Cd), Copper (Cu), Chromium (Cr), Lead (Pb), Zinc (Zn), and others are major environmental problems due to their toxic nature, nonbiodegradability and accumulative behaviors. There are anthropogenic or geogenic sources that accumulate or rotate elements in sediments. Sediments served as excellent indicator of metal pollution in coastal environments as...
East of Shahindezh (south of West Azarbaidjan province), as a part of Irano-Himalayan karst bauxite belt, comprises discontinuous layers and lenses of bauxite, laterite, and kaolin within the Ruteh carbonate formation (Middle- Upper Permian). The XRD analyses show that the lateritic ores have rather simple mineralogy, and consist of hematite, boehmite, and kaolinite as major phases accompanied ...
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