نتایج جستجو برای: interface concentrations
تعداد نتایج: 509395 فیلتر نتایج به سال:
Abstract Explosive welding is a solid state process in which bond is produced by a high oblique impact of two plates with the controlled explosive charge. In this paper, the explosive welding of Ms90 brass flyer plate with the St14 steel base plate are considered by using the parallel set up geometry. From the practical viewpoint, various parameters such the stand-off distance, dynamic angl...
An RNA 'kissing' complex is formed by the association of two hairpins via base pairing of their complementary loops. This sense-antisense RNA motif is used in the regulation of many cellular processes, including Escherichia coli ColE1 plasmid copy number. The RNA one modulator protein (Rom) acts as a co-regulator of ColE1 plasmid copy number by binding to the kissing hairpins and stabilizing th...
a study of the features of the international children's digital library's user interface from the viewpoint of users and presenting a proposed model zohreh hassanpoor* saeed rezaei sharifabadi** alzahra university of tehran this research studies iranian children's understanding of the meaning of conceptual signs and icons existing in the user interface of the internati...
Insulin in low concentrations inhibits the uptake of Ca(++) by the monooctadecyl (stearyl) phosphate monolayer (at air-water interface) and facilitates the release of Ca(++) adsorbed to the monolayer. These effects of insulin are more pronounced at higher insulin concentrations. Evidence is presented that a relatively intact insulin molecule competes with Ca(++) for the free phosphate group of ...
The aphase is rich in Ta. When the Ta concentration is less than 14%N, adoes not interfere with the slip mechanism; when the Ta concentration is more than 15%, ainterferes with the slip mechanism. The coherent at-Co 3Ta phase forms at Ta concentrations of less than 15%1, whereas incoherent 7-Co2Ta forms only at higher Ta concentrations. The interface between aand the matrix is an important fact...
The electrical-double layer (EDL) model is fundamental to our understanding of interactions in ionic solutions, and widely used chemical, biological, technological contexts, particularly the description aqueous electrolyte solutions. However, recent experiments have raised questions regarding validity this polar, aprotic solvents; some observations, such as a surface potential that changes sign...
In the present research, the effect of standoff distance on corrosion properties of the joint of three aluminum–steel explosive layers has been studied. For this purpose, the samples were welded with various standoff distance under constant explosive load. Optical Microscopy and Scanning Electron Microscopy were used to measure the quality of the joint and type of interface. Furthermore, point ...
Introduction: User interfaces are a crucial factor in ensuring the success of mobile applications. Mobile Educational Applications not only provide flexibility in learning, but also allow learners to learn at any time and any place. The purpose of this article is to investigate the effective factors affecting the design of the user interface in mobile educational applications. Methods: Quantita...
trescine are major polyamines in mammalian cells, and they play important roles in cell growth and differentiation. Although a variety of analytical methods for polyamines have been developed, there is still a need for a simpler, more sensitive and accurate method. The mass spectrometric method can simultaneously separate and identify polyamines on the basis of the difference of their mass with...
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