نتایج جستجو برای: solidstate chemistry
تعداد نتایج: 108786 فیلتر نتایج به سال:
Data are summarized on the synthesis of hydroxyapatite (HA) by wet-chemical processes, solidstate reactions, and hydrothermal treatment. The conditions for HA preparation via precipitation from solutions of calcium chloride, dibasic ammonium phosphate, and aqueous ammonia are discussed at length. Detailed analysis of the fabrication and properties of calcium-phosphate-based ceramics is presente...
This paper makes a case for the multi-streamed solidstate drive (SSD). It offers an intuitive storage interface for the host system to inform the SSD about the expected lifetime of data being written. We show through experimentation with a real multi-streamed SSD prototype that the worst-case update throughput of a Cassandra NoSQL DB system can be improved by nearly 56%. We discuss powerful use...
Nuclear quadrupole resonance (NQR) is a radio frequency spectroscopic technique that can be used to detect solidstate compounds containing quadrupolar nuclei, a requirement fulfilled by most high explosives (and narcotics). In this paper, we present an overview of recent research in the detection of explosives using this technique. We also present mathematical models for the data for different ...
s the operating frequency of semiconductor solidstate devices increases into the millimeterwave region, the size of the devices and their power handling capability are reduced. In order to provide the advantages of a solid-state technology for moderate power levels at millimeter-wave frequencies, solid-state components must be combined. Spatial power combining provides enhanced RF efficiency by...
OF THE DISSERTATION Improving and Tuning the Performance of Server Systems by Cheng Li Dissertation Directors: Thu D. Nguyen and Ricardo Bianchini Modern server systems incorporate complex hardware and software technologies, such as solidstate drives and software virtualization. Maximizing the performance of these complex systems involves many challenges. For example, their performance can ofte...
Lithium batteries have been widely used as a power source for numerous small devices such as mobile phones and laptop computers. Recently, the lithium battery is expected to be used as a power source for electric vehicles. For the electric vehicles application, an improvement of energy and power densities and safety is required. In this review, a brief explanation of structure and mechanism of ...
Quantum mechanical manipulations (“quantum state engineering”) of solidstate systems is one of the most rapidly developing areas of research. Substantial progress has been achieved with superconducting circuits based on Josephson junctions. Solid-state building blocks of quantum computers have the advantages that they can be switched quickly, and they can be integrated into electronic control a...
fatemeh karimi tabar was born in asadabad/hamedan (iran) in 1986. she completed her b.sc. in chemistry in 2008 from bu-ali sina university, hamedan, iran. she was graduated from m.sc. degree in organic chemistry from shiraz university 2010, shiraz, iran. she is currently organic chemistry ph.d student under the supervision of prof. m.a. zolfigol and prof. a. khazaei in department of chemistry a...
Surface micro-structuring of silica glass plates was performed by using laser-induced backside wet etching (LIBWE) upon irradiation with a single-mode laser beam from a diode-pumped solidstate UV laser at 266 nm. We have succeeded in a well-defined micro-pattern formation without debris and microcrack formations around the etched area on the basis of galvanometer-based point scanning system wit...
4. Achievements 10kV SiC MPS Rectifiers: In previous years, the center has proposed a novel SiC MPS (Merged-PiN-Schottky) Rectifier for the solidstate transformer application to improve the trade-off between on-state and turn-off switching losses [1]. This reduces energy loss and improves the efficiency of the SST. The MPS rectifiers were successfully fabricated in Year 6 [2] and demonstrated t...
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