As one of the popular conformance control technologies in recent years, polymer microspheres have shown excellent oil displacement effects in deep profile control and flooding. This article first elaborates the selection of polymer microspheres in detail,and summarizes the research status of polymer microspheres conformance control technology from two aspects. Finally, the problems and development directions of polymer microsphere conformance control technology are comprehensively analyzed..

Key Word: polymer microspheres; composite flooding; conformance control; enhanced oil recovery

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This survey is for a collection of researches using nano-phase glass to control the proportion of light and heat from entering buildings through windows. It was found that there are many ways to control the entry of light and heat into buildings, whether positive or negative. We mentioned some in this survey but in this review, we focus on the glass containing the nano-phase. we focus in this survey most of the additives that can be obtained from the nano-phase, the percentage of blocking, and its effect, whether positive or negative......

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[2]. Arvind ChelGeetanjali Kaushik, Alexandria Engineering Journal (2018) 57, 655–669
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[4]. https://greenpassivesolar.com/passive-solar/building-characteristics/orientation-south-facing-windows/
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Background: The cost of fish feed is a major challenge militating against expanding fish farming in Nigeria, as it accounts for about 60-80% of input costs. Large percentage of the floating fish feeds with good water stability marketed in Nigeria is imported with relatively high cost of purchase; the actual extruding machine for floating feed such as Insta PRO 2000 is very expensive. There is need to develop a local technology to produce floating fish pellets with good water stability at a comparative lower cost than the imported ones, this will reduce dependence on the importation of fish feeds.......

Keywords: Pelletizing Machine, Barrel Length, Die Size, Throughput capacity.

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Background: Mines provide a contribution that is being completed in terms of social, project and economic aspects of human beings.The use of steam power in the emergence and development of the first industrial revolution has increased the importance of mines. In this period, large factories were built and the transition to mechanical production was made. With the machines starting to replace the workforce, production was carried out in a fast, high quality, flexible and cheap way and there was an increase in productivity. On the other hand, explosions, mining accidents, steam boiler explosions......

Keywords: .....

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