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Online since: April 2024
Authors: Lala Akhmedova-Azizova, Rufat Kalbaliyev, Ulviyye Nasibova
These factors determine the composition and structure of future scale formation, the intensity of the scale precipitation process, and the nature of scale thermal resistance.
Such a processed model capability allows for obtaining results based on empirical chemistry derived from experimental values to determine quantities from various angles.
Furthermore, it enables the establishment of the structure of empirical dependencies and the comprehensive utilization of experimental data.
Online since: March 2015
Authors: Ke Hui Qiu, Guo Yin Yan, Si Zhu Chen, Zi Xu Jiang, Ce Zhao
Synthesis and Luminescent Properties of Ca2Li2BiV3O12:Eu3+ Phosphor Sizhu Chen1, 2, a, Kehui Qiu1, 2, b*, Guoyin Yan1, 2, c, Zixu Jiang1, 2, d and Ce Zhao1, 2, e 1Institute of Materials Science and Technology of Chengdu University of Technology, China 2College of Materials and Chemistry & Chemical Engineering, Chengdu University of Technology, Chengdu, China achensizhu90@163.com,bqkh2188@163.com,cyanguoyin_1989@126.com, djiangzixu122@163.com,e15708455475@163.com Keywords: Rare earth; Ca2Li2BiV3O12:Eu3+; Red phosphor material; Luminescence.
The positions and relative intensities of the main peaks are matched to the Ca2Li2BiV3O12 (PDF NO.48-0290) phase with the cubic structure belonging to the Ia3d space group.
With temperature increasing, the system can provide a higher kinetic energy which is beneficial to Eu3+ entering into the lattice matrix and form a rigid crystal structure.
Online since: May 2023
Authors: Fabrizio Roccaforte, Filippo Giannazzo, Salvatore Di Franco, Simonpietro Agnello, Salvatore Ethan Panasci, Marilena Vivona, Simone Rascunà, Anna Bassi, Corrado Bongiorno, Gabriele Bellocchi, Paolo Badalà
Exploring UV-Laser Effects on Al-Implanted 4H-SiC Marilena Vivovna1,a*, Filippo Giannazzo1,b, Gabriele Bellocchi2,c, Salvatore Ethan Panasci1,3,d, Simonpietro Agnello1,4,5,e, Paolo Badalà2,f, Anna Bassi2,g, Corrado Bongiorno1,h, Salvatore Di Franco1,i, Simone Rascunà2,j and Fabrizio Roccaforte1,k 1CNR-IMM, Strada VIII n.5, Zona Industriale, I-95121, Catania, Italy 2STMicroelectronics, Stradale Primosole 50, I-95121, Catania, Italy 3Department of Physics and Astronomy, University of Catania, Via Santa Sofia 64, I-95123 Catania, Italy 4Department of Physics and Chemistry Emilio Segrè, University of Palermo, via Archirafi 36, I-90123 Palermo, Italy 5ATEN Center, University of Palermo, Viale delle Scienze Ed. 18, I-90128 Palermo, Italy a *marilena.vivona@imm.cnr.it, bfilippo.giannazzo@imm.cnr.it, cgabriele.bellocchi@st.com, dsalvatoreethan.panasci@imm.cnr.it, esimonpietro.agnello@unipa.it, fpaolo.badala@st.com, ganna.bassi@st.com, hcorrado.bongiorno@imm.cnr.it, isalvatore.difranco
Forum 353-356 (2001) 549-554. ] and post-implantation thermal annealing treatments are required to partially restore the crystalline structure of the semiconductor [[] A.
Finally, the electrical properties of the laser-irradiated Al-implanted layers were determined by current-voltage-temperature (I-V-T) measurements on appropriate structures, based on circular Transmission Line Model (C-TLM) [[] Schroder, D.K.
Online since: March 2016
Authors: Sergey Kozyukhin, Petr Lazarenko, Alexey Babich, Sergey Timoshenkov, Dmitry Gromov, Alexey Yakubov, Dmitry Terekhov, Alexey Sherchenkov
Influence of Ti doping on the properties of Ge-Sb-Te thin films for phase change memory Alexey Sherchenkov1,a, Sergey Kozyukhin2,b, Petr Lazarenko1,c, Alexey Babich1,d, Sergey Timoshenkov1,c, Dmitry Gromov1,c, Alexey Yakubov1,c, Dmitry Terekhov1,c 1National Research University of Electronic Technology, Bld. 5, Pas. 4806, Zelenograd, Moscow 124498, Russia 2Kurnakov Institute of General and inorganic Chemistry, RAS, 31 Leninsky prosp., Moscow 119991, Russia aaa_sherchenkov@rambler.ru, bsergkoz@igic.ras.ru, caka.jum@gmail.com, ddrent@yandex.ru, Keywords: phase change memory, Ge-Sb-Te system, Ti doping.
Structures of the synthesized alloys and as-deposited films were checked by X-ray diffraction (XRD, Rigaku D/MAX, Cu Kα λ=0.15481 nm).
For this purpose planar structures containing Al electrodes with fixed interelectrode distances, and deposited upon them investigated thin films were fabricated on oxidized c-Si substrates.
Online since: October 2012
Authors: P. Sreeramana Aithal, Gopalkrishna Bhat, Shubhrajyotsna Aithal
Bhat3,c 1Srinivas College, Pandeshwar, Mangalore – 575 001, India 2Srinivas Institute of Management Studies, Mangalore – 575 001, India 3Dept. of Chemistry, Srinivas Institute of Technology, Mangalore – 575 001, India email : apsaithal@gmail.com. bpsaithal@hotmail.com, cshreedakumar@yahoo.co.in Keywords : degenerate four wave mixing, optical phase conjugation, saturation absorption, dye doped polymer.
The molecular structure of DO-25 is shown in Fig. 2.
N(C2H5)CH2CH2CN N=N [3-[N-ethyl-4-(4-nitrophenylazo)phynyl- amino]propionitrile] ON2 Fig, 2 : Molecular Structure of DO –25 Fig. 3 : Linear absorption spectrum of DO-25.
Online since: July 2011
Authors: Ming Li, Jian Xin Zhang, Li Yuan Yu, Chun Xiao Tang, Chuan Zhen Zhao
Because simulation can optimize internal structure and reduce cost, several groups made meaningful simulations [1-9].
Schematic structure of HVPE reactor for GaN growth Table 1 The initialization of the boundary condition The flow is considered steady flow and incompressible fluid model is adopted in the simulation.
Karpov, et al., “Surface chemistry and transport effects in GaN hydride vapor phase epitaxy,” Journal of Crystal Growth, vol. 270, Sep. 2004, pp. 384-395, doi:10.1016/j.jcrysgro.2004.0 7.018
Online since: October 2011
Authors: Xiang Chun Chen, Yong Qi Liu
The previous studies both at home and abroad are mainly focused on the properties of ceramic honeycomb, and some are related to the properties of the whole ceramic oxidation bed[2-3], but researches about the inner structure of the oxidation bed is still a blank.本文采用数值模拟方法研究陶瓷氧化床的阻力性能,就是为工业应用提供设计依据。
In accordance with the structure characteristics of the ceramic honeycomb: square-hole ceramic honeycomb has a large specific surface area, hex-hole ceramic honeycomb has good flow properties.
[In Chinese] [5] M.LUO, J.F.LIU, T.ZH.DU: Computers and Applied Chemistry.
Online since: May 2011
Authors: Hong Qiu Lv, Xue Fang Zhang, Jun Gang Gao
Curing, Thermal Properties and Flame Resistance of Tetrabromo-BPA Epoxy Resin/ Boron-Containing Phenol Resin Jungang Gao*a, Xuefang Zhangb, Hongqiu Lvc College of Chemistry and Environmental Science , Hebei University, Baoding 071002 , China agaojg@hbu.edu.cn,byanzhaxuefang@yahoo.com.cn,clvhongqiu08@163.com Keywords: bromo-epoxy resin, boron-containing phenol resin, thermal properties, fire resistance.
However, the phenolic hydroxyl, ether bond and methylene in the structure of phenolic resin are easily oxidized.
On one hand, the B-O bonds can form to three-dimensoonal structure and increase the cross-linked density of curing system and may form six-membered rings [6], these will hinders thermal motion of the molecular segmer, so the glass transition temperature (Tg) will increase.
Online since: July 2006
Authors: Jian Bing Zang, H. Huang, Yan Hui Wang, W. Tang
Therefore the surface structure became more stable and the oxidation temperature improved with boron concentration rising.
Crystal structure distortion and more defects due to high boron doping in GICs supply more nucleation sites for diamond growth.
These characteristics may be used to investigate the redox kinetics in the electroanaltycal chemistry. 1000 1200 1400 1600 1800 2000 0.010 0.015 0.020 0.025 0.030 0.035 1332cm-1 Raman Intensity Raman Shift cm-1 �� � Fig.1 Raman spectrum of B-doped diamond Fig.2 SEM images of B-doped diamond -1.0 -0.5 0.0 0.5 1.0 -10 -8 -6 -4 -2 0 2 4 6 8 10 Current/10 -6 A Potential/V -0.5 0.0 0.5 1.0 1.5 -30 -20 -10 0 10 20 Current/10 -6 A Potential/V � ����������������� (a) (b) -0.5 0.0 0.5 1.0 1.5 2.0 -20 -15 -10 -5 0 5 10 15 20 Current/10 -6 A Potential/V 0.0 0.5 -5 0 5 Current/10 -6 A Potential/V � (c) (d) Fig.3 Cyclic voltammograms of B-doped diamond powder electrode in different electrolytes of (a) 0.1M KCl, (b) 0.5M Na2SO4, (c) 0.1 M H2SO4, (d) 0. 5M Na2SO4 containing K3Fe(CN)6 and K4Fe(CN)6 (each 20mM), scan rate 0.2V/s Raman shift [ -
Online since: May 2011
Authors: Ji Yan Liu, Xue Qing Liu
Mechanical Properties and Morphologies of Rice Husk Silica/Epoxy Nanocomposites Xueqing LiuPaP, Jiyan LiuPbP College of Chemistry and Environmental Engineering, Jianghan University, Wuhan 430056, China PaPE-mail: liuxueqing2000@163.com ; Pb PE-mail:HTUliujiyan918@163.comUTH Keywords: nanocomposites; silica; mechanical properties; morphology; thermosets Abstract: Amorphous rice husk silica with purity of 99.3% and the specific surface area value of 212 mP2P/g was obtained by burning the dilute HCl treated rice husk at 600℃.
Introduction Epoxy resins are widely used in various engineering and structure applications such as electrical industries, commercial and military aircrafts industries.
The formation, physical properties and structure of nano silica from rice husk depend on the experimental condition [5-7].