نتایج جستجو برای: ray diffractions

تعداد نتایج: 303137  

Journal: :Süleyman demirel üniversitesi fen-edebiyat fakültesi fen dergisi 2021

In this study, Bi-doped ZnO and undoped nanomaterials have been synthesized by the solvothermal reaction method. The effect of Bi doping on structural electrochemical properties has investigated X-ray diffractions (XRD), photoelectron spectroscopy (XPS) and, scanning electron microscopy (SEM). As seen from diffraction spectra performed bulk material, it clearly observed that both changed prefer...

Journal: :Acta chimica Slovenica 2011
Wen-Tong Chen

The 4f-3d heterometallic complexes [Nd(L)3(H2O)2]2(ZnCl4)3n • 4nH2O (1) (L = isonicotinic acid) and [Sm(L')3(H2O)2]2(ZnCl4)n • 2nH2O (2) (L' = nicotinic acid) have been obtained by hydrothermal reactions and structurally characterized by X-ray single-crystal diffractions. Both complexes feature an infinite 1-D polycationic chain-like structure. Photoluminescent investigations reveal that both c...

2017
Gui-yang Xia De-juan Sun Jiang-hao Ma Yue Liu Feng Zhao Paul Owusu Donkor Li-qin Ding Li-xia Chen Feng Qiu

Germacrane-type sesquiterpenes, with a flexible 10-membered ring unit as the structural and conformational features, play a central role in the biosynthesis and synthesis of other sesquiterpenes. In this report, two pairs of new sesquiterpene alkaloids, (+)/(-)-phaeocaulin A [(+)-1/(-)-1] and B [(+)-2/(-)-2], and two pairs of new sesquiterpenes, (+)/(-)-phaeocaulin C [(+)-3/(-)-3] and D [(+)-4/...

2002
Dimitrios I. Axiotis Michael E. Theologou

The case of outdoor to indoor propagation prediction at high elevation angles has been scarcely addressed and no direct relationship between the elevation angles and the building penetration loss has been reported. High Altitude Platform Stations a new means of providing International Mobile Telephony (IMT-2000)-will be operating at high elevation angles. This paper examines the impact of the h...

Journal: :Nanoscale 2011
Jianjun Hu Yan Hong Chris Muratore Ming Su Andrey A Voevodin

The solid-liquid phase transition of silica encapsulated bismuth nanoparticles was studied by in situ transmission electron microscopy (TEM). The nanoparticles were prepared by a two-step chemical synthesis process involving thermal decomposition of organometallic precursors for nucleating bismuth and a sol-gel process for growing silica. The microstructural and chemical analyses of the nanopar...

Journal: :Optics express 2014
Wen-Che Tsai Chia-He Hsu Shao-Fu Fu Fang-Wei Lee Chin-Yu Chen Wu-Ching Chou Wei-Kuo Chen Wen-Hao Chang

Structural and optical properties of thick InGaN layers with strain and composition inhomogeneities are investigated. High resolution x-ray diffractions (XRD) and reciprocal space mapping (RSM) along an asymmetric axis reveal that the In composition inhomogeneity is accompanied by strain relaxations during the growth of thick InGaN layers. According to the structural analysis, the commonly obse...

Journal: :Crystals 2023

Side-chain liquid crystal elastomers (SC-LCEs) have been designed by using a new smectic crosslinker. Two types of monodomain films were prepared based on polysiloxane chains, with different relative concentration both crosslinker and mesogenic comonomers. The mesomorphic behavior the two SC-LCE systems was investigated differential scanning calorimetry polarized optical microscopy showing beha...

2007
Heung-Shik Lee Chongdu Cho Myeong-Woo Cho

We have developed a wireless-controlled compact optical switch by siliconmicromachining techniques with DC magnetron sputtering. For the optical switchingoperation, micro mirror is designed as cantilever shape size of 5mm×800μm×50μm.TbDyFe film is sputter-deposited on the upper side of the mirror with the condition as: Argas pressure below 1.2×10-9 torr, DC input power of 180W and heating tempe...

2013
Su-Chul Yang Ashok Kumar Valeri Petkov Shashank Priya

In this paper, single-phase multiferroic ceramics of (1 x) BaTiO3 x BiFeO3 (BT x BFO) were synthesized by solid-solution method in the wide range of material composition (x1⁄4 0.025 – 1.0). The changes in crystal structure were confirmed via X-ray diffractions (XRD) and atomic pair distribution functions (PDFs). The room-temperature ME coupling was found to exhibit significant magnitude in the ...

2015
Syed Aun Muhammad Safia Ahmed

A novel thermophilic bacterial strain of the genus Aeribacillus was isolated from Thar Dessert Pakistan. This strain showed significant antibacterial activity against Micrococcus luteus, Staphylococcus aureus, and Pseudomonasaeruginosa. The strain coded as 'SAT4' resembled with Aeribacillus pallidus in the morphological, biochemical and molecular tests. The production of antibacterial metabolit...

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