نتایج جستجو برای: raw and mineral materials
تعداد نتایج: 16890923 فیلتر نتایج به سال:
seismic retrofit strategies have been developed in the past few decades following the introduction of new seismic provisions and the availability of advanced materials and methods. it can be observed that new approaches to deal with more lateral forces are more innovative and more energy absorbent. in line with this, there is a growing trend toward the use of steel shear walls as a system with ...
1 microarray to interpret systemic perturbations in Northern bobwhite 2 3 Authors: Arun Rawat, Kurt A. Gust*, Youping Deng, Natàlia Garcia-Reyero, Michael J. 4 Quinn Jr., Mark S. Johnson, Karl Indest, Mohamed O. Elasri and Edward J. Perkins 5 6 7 Author Affiliations: 8 1 University of Southern Mississippi, Dept. of Biological Sciences, Hattiesburg 9 2 U.S. Army Engineer Research and Development...
The article discusses the issues of insufficient use organic and mineral resources peat deposits (substandard peat, mineralised sapropel, wood inclusions deposit, organomineral deposits, etc.). authors propose a structural scheme directions processing biogenic resources. It includes obtaining various types composite formed materials for their application in four main directions: energy, agricul...
Four mineral oil certified reference materials (CRMs), NMIJ CRM 7902-a, CRM 7903-a, CRM 7904-a, and CRM 7905-a, have been issued by the National Metrology Institute of Japan, which is part of the National Institute of Advanced Industrial Science and Technology (NMIJ/AIST), for the determination of polychlorinated biphenyls (PCBs). The raw materials for the CRMs were an insulation oil (CRM 7902-...
Over the last 20 years, China has successfully established a modern biotechnology industry from almost nothing. Presently, China is a major producer of a vast array of products involving bioprocesses, for some China is even the world's top producer. The ever-increasing list of products includes organic acids, amino acids, antibiotics, solvents, chiral chemicals, biopesticides, and biopolymers. ...
background and aims. mineral trioxide aggregate and calcium hydroxide are considered the gold standard pulp-capping materials. recently, portland cement has been introduced with properties similar to those of mineral trioxide aggregate. histopathological effects of direct pulp capping using mineral trioxide aggregate and portland cements on dog dental pulp tissue were evaluated in the present s...
In the article, work has been done to obtain shale mineral powder based on local raw materials and develop technologies improve physical mechanical performance durability of asphalt concrete, thereby increasing physico-mechanical density fine-grained hot dense mix with powder. The water absorption index concrete mixture decreases, strength increases, transport road improves.
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