نتایج جستجو برای: paraffin deposits
تعداد نتایج: 42821 فیلتر نتایج به سال:
Supraglacial deposits are known for their influence on glacier ablation. The magnitude of this influence depends on the thickness and the type of the deposited material. The effects of thin layers of atmospheric black carbon and of thick moraine debris have been intensively studied. Studies related to regional-scale deposits of volcanic tephra with thicknesses varying between millimetres and me...
the potential indoor air impacts of burning candles have drawn increased attention in recent years. burning paraffin waxes itself, regardless to wick and the essence, produce some allergens and even carcinogenic compounds. further biorefining of petroleum paraffin wax with proper bacteria is one of the proposed resolutions to decrease the health threat. therefore in this study iranian heavy cr...
background: the phase change materials (pcms) have the appropriate properties for controlling heat strain. one of the well-known pcms is paraffin. this study aimed to design the cooling vest from the cheap commercial paraffin compound and evaluation of its effectiveness under laboratory hot conditions. methods: the cooling vest was made of the polyester fabric and it had 17 aluminum packs. the ...
Paraffin (called kerosene in North America and other parts of the world) is the most commonly used fuel in non-electrified dwellings worldwide. It is especially popular in Africa and South Asia. Although paraffin offers many advantages-especially its comparatively low cost to produce-it poses two major risks of injury. First, paraffin poisoning is common, either through ingestion or through ...
The necessity of pure water is rising each day, causes are population, industrial and agricultural expansion, worldwide. Due to the increasing population world fresh will become more serious problem in coming days. Hence, people around have work on different efficient methodology generate potable water. Solar still one among these methods acting device. In this paper, a review using PCM with ot...
Abstract The current global economic trends of low commodity prices for hydrocarbons, competition due to the emergence shale oil and gas, as well decline in production from mature oilfields Trinidad Tobago (TT) have fuelled need implementation efficient enhanced recovery methods. Of particular concern locally is issue decreasing increasing costs fields prevalence organic deposits (paraffin or a...
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