نتایج جستجو برای: concentrated system
تعداد نتایج: 2264299 فیلتر نتایج به سال:
Efficiency improvement of a concentrated solar receiver for water heating system using porous medium
Direct steam generation (DSG) solar power systems eliminate synthetic oils and molten salts in the field enable efficient heat collection. Commercial DSG plants usually have a temperature of 250–285 °C to reduce technical challenges wet turbines costs high-pressure water storage tanks. The conversion efficiency is relatively low due limited temperature. This paper proposes high-temperature syst...
Recent advances in nanophotonics open the way for promising applications towards efficient single molecule fluorescence analysis. In this review, we discuss how photonic methods bring innovative solutions for two essential questions: how to detect a single molecule in a highly concentrated solution, and how to enhance the faint optical signal emitted per molecule? The focus is set primarily on ...
This paper explores the relationships among neighborhood disadvantage, stress, and the likelihood of drug use in a sample of adults (N = 1,101). Using the 1995 Detroit Area Study in conjunction with tract-level data from the 1990 census, we find a positive relationship between neighborhood disadvantage and drug use, and this relationship remains statistically significant net of controls for ind...
A density functional theory (DFT) is presented for describing the distributions of small ions around an isolated infinitely long polyanionic DNA molecule in the framework of the restricted primitive model. The hard-sphere contribution to the excess Helmholtz energy functional is derived from the modified fundamental measure theory, and the electrostatic interaction is evaluated through a quadra...
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