Consider a finite set of Euclidean motions and ask what kind of conditions are necessary for this set to generate a crystallographic group. We investigate a set of Euclidean motions together with a special concept motivated by real crystalline structures existing in nature, called an essential crystallographic set of isometries. An essential crystallographic set of isometries can be endowed wit...

Bulk products of crystalline Bi2Se3-xTex alloys (x =0.0, 0.1, 0.3, 0.5) were prepared using simple melting synthesis. Crystalline features, microstructure, and surface morphologies the synthesized samples examined via X-ray diffraction, scanning electron microscope, energy dispersive spectrometer. Elemental distribution was studied by analysis spectroscopy. Polycrystalline rhombohedral crystal ...

Previous studies suggest that tumor necrosis factor alpha (TNF-alpha) and the TNFRI (p55) and TNFRRII (p75) receptors mediate the pulmonary fibrotic response to silica. In order to further define the role of the TNFRI (p55) receptor in induction of profibrotic chemokines by low-dose silica/crystalline silica (50 micro g/50 micro l/mouse) or control diluent saline was instilled into the trachea ...

abstract:the general perception of islamic finance is that it prohibits the practice of paying and receiving interest, but islamicfinance is much broader than interest rate prohibition. islamic financial services can be viewed as a set of financialservices which are diversified based on the needs of society.since in the iranian economy most of the enterprises are micro and/or small, micro finan...

a micro-channel heat exchanger reactor with different micro-baffle shapes has been studied numerically. governing equations were solved base on the finite volume method with fluent software. in upper section, oxidation reaction of methanol was occurred and in lower section, steam reforming of methanol was done. two sections were separated with solid part which played as heat exchanger and trans...

Solid-state electrolytes (SSEs) are key to the success and reliability of all-solid-state lithium batteries, potentially enabling improvements in terms safety energy density over state-of-the-art lithium-ion batteries. However, there several critical challenges their implementation, including interfacial instability stemming from dynamic interaction as-formed dendritic during cycling. For this ...

micro/nanowires grown by simple thermal evaporation Chun Cheng, Kai Liu, Bin Xiang, Joonki Suh, and Junqiao Wu Department of Materials Science and Engineering, University of California, Berkeley, California 94720, USA Materials Sciences Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720, USA National Center for Electron Microscopy, Lawrence Berkeley National Laboratory,...

N type as well P type top gate microcrystalline silicon thin film transistors (TFTs) are fabricated on glass substrates at a maximum temperature of 200°C. The active layer is an undoped μc-Si film, 200 nm thick, deposited by Hot-Wire Chemical Vapor. The drain and source regions are highly phosphorus (N-type TFTs) or boron (P-type TFTs) doped μc-films deposited by HW-CVD. The gate insulator is a...

Coherent X-ray diffraction imaging（CDI）is a lens-less imaging technique that can visualize the structures of non-crystalline specimens with micro- to sub-micrometer dimensions. In past ten years, two experimental techniques in CDI, cryogenic CDI tomography and atmospheric ptychography has been developed established at SPring-8. Here we review these achievement discuss future prospect synchrotro...

We report the anisotropic focusing characteristics of a spherically configured region of micro-domains that have been induced within a cubic shaped crystal of Ce:doped Sr Ba Nb O . The internal spherical structure 0.61 0.39 2 6 focuses extraordinary polarised light, but not ordinary polarised. The spherical region, which is easily observed via scattering, is formed as the crystal cools down, af...