نتایج جستجو برای: high pressure engineering
تعداد نتایج: 2562983 فیلتر نتایج به سال:
excess pore pressure under seismic loadings has always been a main concern in geotechnical engineering practices. the phenomenon in soil can cause an effective stress and hence cause the shear strength of the soil to decrease considerably and large deformations to occur in the area. generally, increases in pore pressure occur in un-drained conditions. if it is formed, its consequences decrease ...
There is a pressure tunnel as the type of structures, which is mainly used in the hydroelectric power industry and in order to design and construct these structures, there are many engineering challenges. One of these problems is the leakage around the tunnel and, consequently, erosion caused by excessive water pressure, and it will lead to instability and the destruction of pressure tunnels. T...
mixed clayey soils occur as mixtures of sand (or gravel) and clay in widely varying proportions. their engineering behavior has not been comprehensively studied yet. an experimental program, comprising monotonic, cyclic, and post-cyclic triaxial tests was undertaken on compacted clay-granular material mixtures, having different proportions of clay and sand or gravel. this paper presents the res...
Introduction:Considering the lack of agricultural lands and the loss of products by pests, utilization of pesticides like atrazine has increased. Due to low vapor pressure, high half-life, and high mobility, this herbicide results in pollution of different ecosystems. In regard with its toxicity, US Environmental Protection Agency has ranked atrazine in III class. Due to its potential capacity ...
In this study the feasibility of using high pressure CO2 to produce porous alpha-elastin hydrogels was investigated. Alpha-elastin was chemically crosslinked with hexamethylene diisocyanate that can react with various functional groups in elastin such as lysine, cysteine, and histidine. High pressure CO2 substantially affected the characteristics of the fabricated hydrogels. The pore size of th...
Wen Fan,1 Xi Zhu,2 Feng Ke,3 Yabin Chen,1 Kaichen Dong,1 Jie Ji,4 Bin Chen,3 Sefaattin Tongay,5 Joel W. Ager,6 Kai Liu,7 Haibin Su,2,* and Junqiao Wu1,6,† 1Department of Materials Science and Engineering, University of California, Berkeley, California 94720, USA 2School of Materials Science and Engineering, Nanyang Technological University, Singapore 639798, Singapore 3Center for High Pressure ...
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