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Frontiers in Biology 2013年第6期8卷 632-639页

作者： C. Subathra DEvI Renuka ELIZABETH JOSEPH Harini SARAvANAN S. Jemimah NAINE v. Mohana SRINIvANSAN School of Biosciences and Technology VIT University VeIlore Tamil Nadu India

The current work was attempted to isolate and characterize the serratiopeptidase producing Serratia sp. Among the 10 bacterial isolates 7 strains were identified as Serratia sp. Out of 7 strains one showed potent proteolytic activity and selected for further studies. Based on the morphological, biochemical and molecular characterization, the potent isolate （RH03） was identified as Serratia marcescens （GenBank accession number： KC961637） and the strain was designated as Serratia marcescens vITSD2. The production of serratiopeptidase was carried out in trypticase soya broth and the enzyme was partially purified using ammonium sulfate precipitation and dialysis. The specific activity was determined by casein hydrolysis assay and was found to be 12.00, 21.33, and 25.40 units/rag for crude, precipitated and dialysed samples. The molecular weight of the protease was determined by SDS-PAGE and it was found to be 50 kDa. The antibacterial activity of the produced serratiopeptidase showed moderate activity against Pseudomonas aeruginosa MTCC No. 4676 （12 mm） and Escherichia coli MTCC No. 1588 （15 mm）.

关键词： Serratiopeptidase Serratia marcescens vITSD2 antibacterial activity

Temperature-activation mechanism of the temperature dependence of the dielectric constant of ferroelectric ceramics PZT

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Journal of Advanced Dielectrics 2022年第3期12卷 65-71页

作者： D.v.Kuzenko Science&Technology Center“Reaktivelektron”of the National Academy Science of Ukraine Bakinskikh Komissarov Street 83049 DonetskUkraine

The theoretical possibility of the temperature-activation process of the temperature dependence of the dielectric constant of sam-ples of ferroelectric ceramics lead zirconate titanate(PZT)at temperatures below the Curie point is *** model takes into account the 180°motion of the domain wall,which is located in the potential *** values of activation energies(~0.01,0.1,1 ev)were obtained from the experimental dependences of the logarithm of the dielectric constant on the reciprocal *** is associated with three processes:initial vibrations of domain walls;separation of domain walls(DWs)from oxygen vacancies;the motion of DWs as a result of the motion of oxygen vacancies.

关键词： PZT dielectric constant activation energy domain walls oxygen vacancies

Structure and dielectric properties of solid solutions Bi_(7−2x)Nd_(2x)Ti_(4)NbO_(21)(x=0.0,0.2,0.4,0.6,0.8,1.0)

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Journal of Advanced Dielectrics 2021年第5期11卷 68-74页

作者： S.v.Zubkov Research Institute of Physics Southern Federal University pr.Stachki 194 Rostov-on Don 344090 Russia Department“International”Don State Technical University 1 pr.GagarinaRostov-on-Don 344003Russia

The electrophysical and structural characteristics of bismuth titanate oxides of a number of phases of solid solutions of the Aurivillius phases Bi_(7−2x)Nd_(2x)Ti_(4)NbO_(21)(x=0.0,0.2,0.4,0.6,0.8,1.0)having a layered structure of the perovskite type have been *** to the XRD data,all studied compounds are single-phase and have a mixed-layer structure of Aurivillius phases(m=2.5)with a rhombic crystal lattice(space group I2cm,Z=2).A relationship has been established between changes in the chemical composition of solid solutions and orthorhombic and tetragonal distortions of perovskite-like *** temperature dependences of the relative permittivityε/ε_(o)(T)are *** was found that the change in the phase transition temperature-Curie temperature T_(C)synthesized Aurivillius phases Bi_(7−x)Nd_(2x)Ti_(4)NbO_(21)(x=0.0,0.2,0.4,0.6,0.8,1.0)has a close to linear dependence on the change in the parameter *** activation energies of charge carriers in different temperature ranges were *** was found that three clearly defined temperature ranges with different activation energies can be distinguished,which is associated with the different nature of charge carriers in the studied solid solutions of the perovskite *** effect of substitution of Nd^(3+)ions for Bi3+ions is investigated.

关键词： Aurivillius phases Bi_(7−2x)Nd_(2x)Ti_(4)NbO_(21) Curie temperature(TC) tolerance factor

Experience and perspectives of application of gasdynamic coatings in space technology

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广东有色金属学报 2005年第2期15卷 297-298页

作者： Bakhvalov Yu.O. Polovtsev v.A. Mikheev v.I . Khrunichev State Research and Production Space Center Moscow Russia

The given work deals with the results of the research carried out by the 'Salute' DB of the Khrunichev State research-and-production space center concerning the development of special equipment and improvement of the technique of the 'cold' gasdynamic method of application of coating for the accomplishment of several specific tasks: (1) development of the technique of application of a fireproof heat-radiating coating to screens made from stainless steel with coefficient of thermal radiation ε≥0.7; (2) development of technique of sealing ('curing') of microleaks on the weld joints of the propellant tanks made of aluminum alloys; (3) study of the opportunity of sealing of joints of parts made from heterogeneous materials; (4) development of process for copper and nickel coating application for aluminium heat exchangers soldering.

关键词：不锈钢气动激光器涂层表面工程热散系数

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有关低视力的功能和康复

眼科学报 1986年第2期2卷 103-108页

作者： William v.Padula American Optometric Association Rehabilitation Center Low vision Clinic U.S.A.

人口统计学研究一致认为年龄是盲和视觉损害的最好预告者,因为眼正常组织的退化和眼病理学发病率的增加,年龄造成对视觉的损害。由于医学工艺学、外科技术和治疗方面的不断进步,完全丧失视力将会减少,而部分视力丧失的患者比例将增加。... 详细信息

人口统计学研究一致认为年龄是盲和视觉损害的最好预告者,因为眼正常组织的退化和眼病理学发病率的增加,年龄造成对视觉的损害。由于医学工艺学、外科技术和治疗方面的不断进步,完全丧失视力将会减少,而部分视力丧失的患者比例将增加。习惯上将视觉损害分为4类:1)中心视力下降,2)中心视野丧失,3)周边视野丧失,4)以上三种情况的混合。临床常常看到,并非所有病人的视力和/或视野丧失都是同样的,视觉的完成和视功能的能力可以大不相同。1973年 Trevarthen 和1982年 Liebowitz 和Post 等认为视觉的过程有两种基本形式:焦点的和周围的。这些过程的形成有眼和脑的参与。而且,在完成视觉过程中影响到视力,按其过程中所受干扰的不同每个人有所不同。而不单是靠视力和视野的定量测定。例如,年龄增加会引起对低空间频率的视对比敏感功能下降。因此不同年龄的人可以有同样的视力,但视觉的完成所受的影响却是非常不同的。视觉损害可深刻干扰视觉的完成,因而影响独立生活、学习能力、就业机会和社会关系等等方面。药物和外科干预是全世界防盲的首要措施,防盲的成功常导致视力缺损。历史上,为视觉损害人制定的抢救视力的计划和补偿性照顾服务是着重于补偿病人丧失独立性的那部分。不幸的是,这些措施仍是世界许多地区提供的唯一措施。此外,同样要采取积极措施使仍有可用视力的患者重建视力。通过特殊的低视力检查,让病人使用光学和非光学辅助器,视觉受损者可以最大限度地使用他们的残存视力。低视力检查是通过视觉再建措施来进行和可为改善视功能而设计的多样训练的一部分。低视力检查者使用特殊的检查技术,目的在于对视觉的完成过程进行定性估计和定量测定。用于估计旁中心固视的眼图、对比敏感度试验、动态视力试验、详细的视野分析、使用三棱镜的特殊的屈光技术,以及在远、近距离中用的放大方法是用来改善视觉受损者视功能的一些新方法。为了有效使用聚焦式和周围式的视觉过程,按病人需要而个别设计的光掌辅助器使用的训练是很重要的。低视力服务是提供有效视功能的一种方法,目的是增强视力损害患者的独立性,改善自我概念。

关键词：视力检查 Pro 视觉过程低视力视功能

氖和亚铜等离子蒸气系统中的负离子和电子能量分配函数(英文)

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湘潭大学自然科学学报 2001年第2期23卷 136-144页

作者： v.Zaitsev v.Zaitsev A.Mashcov 颜晓红杨奇斌王金斌湘潭大学物理系国立伊万洛沃大学国立伊万洛沃大学，俄罗斯，153025

计算了激光产生铜等离子体蒸气中的物理和动力学参数 ,通过数值方法近似地求解玻尔兹曼动力学方程 ,发现存在一些具有各向同性和固定值物理量 .在气体放电系统中观察了HBr混合物对其物理参数和电子能量分配函数的影响 .利用交叉区电子... 详细信息

计算了激光产生铜等离子体蒸气中的物理和动力学参数 ,通过数值方法近似地求解玻尔兹曼动力学方程 ,发现存在一些具有各向同性和固定值物理量 .在气体放电系统中观察了HBr混合物对其物理参数和电子能量分配函数的影响 .利用交叉区电子碰撞激发过程计算了反应速度系数 ,表明具有HBr混合物的 3d94s2 2 D能级的共振激发更好 .

关键词：电子能量分配函数氖气体放电系统电子碰撞亚铜等离子蒸气系统反应速率系统

Supporting IrO2 and IrRuOx nanoparticles on TiO2 and Nb-doped TiO2 nanotubes as electrocatalysts for the oxygen evolution reaction

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Journal of Energy Chemistry 2019年第7期28卷 227-239页

作者： Radostina v.Genova-Koleva Francisco Alcaide Garbine Alvarez Pere L.Cabot Hans-Jürgen Grande María v.Martínez-Huerta Oscar Miguel CIDETEC P°Miramon19620014 San SebastianSpain Laboratory of Electrochemistry of Materials and the Environment Department of Materials Science and Physical ChemistryUniversitat de BarcelonaMarti i Franques 1-1108028 BarcelonaSpain Instituto de Catálisis y Petroleoquimica CSICC/Marie Curie228049 Madrid.Spain

IrO2 and IrRuOx(Ir:Ru 60:40 at%),supported by 50 wt%onto titania nanotubes(TNTs)and(3 at%Nb)Nb-doped titania nanotubes(Nb-TNTs),as electrocatalysts for the oxygen evolution reaction(OER),were synthesized and characterized by means of structural,surface analytical and electrochemical *** doping of titania significantly increased the surface area of the support from 145(TNTs)to 260 m2g-1(Nb-TNTs),which was significantly higher than those of the Nb-doped titania supports previously reported in the *** surface analytical techniques showed good dispersion of the catalysts onto the *** X-ray photoelectron spectroscopy analyses showed that Nb was mainly in the form of Nb(Iv)species,the suitable form to behave as a donor introducing free electrons to the conduction band of *** redox transitions of the cyclic voltammograms,in agreement with the XPS results,were found to be *** the supported materials presented bigger crystallite sizes than the unsupported ones,the total number of active sites of the former was also higher due to their better catalyst *** the outer and the total charges of the cyclic voltammograms in the range 0.1–1.4 v,stability and electrode potentials at given current densities,the preferred catalyst was Ir O2 supported on the *** electrode potentials corresponding to given current densities were between the smallest ones given in the literature despite the small oxide loading used in this work and its Nb doping,thus making the Nb-TNTs-supported IrO2 catalyst a promising candidate for the *** good dispersion of IrO2,high specific surface area of the Nb-doped supports,accessibility of the electroactive centers,increased stability due to Nb doping and electron donor properties of the Nb(Iv)oxide species were considered the main reasons for its good performance.

关键词： Nb-doped TiO2 nanotubes IrO2 catalyst IrRuOx catalyst Oxygen evolution reaction PEMWE

Synthesis and biological activity of novel N-(3-furan-2-yl-1-phenyl-1H-pyrazol-5-yl) amides derivatives

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Chinese Chemical Letters 2016年第9期27卷 1547-1550页

作者： Jing-Qian Huo Liu-Yong Ma Zhe Zhang Zhi-Jin Fan Jin-Lin Zhang Tetyana v. Beryozkina vasiliy A. Bakulev College of Plant Protection Agricultural University of Hebei Baoding 071001 China State Key Laboratory of Elemento-Organic Chemistry Nankai University Tianjin 300071 China Collaborative Innovation Center of Chemical Science and Engineering (Tianjin) Nankai University Tianjin 300071 China The Ural Federal University Named after the First President of Russia B.N. Yeltsin Ekaterinburg 620002 Russia

A series of novel N-（3-furan-2-yl-l-phenyl-lH-pyrazol-5-yl） amides derivatives were designed and synthesized. Their structures were confirmed by 1H NMR, 13C NMR and HRMS. All title compounds were evaluated for their herbicidal and antifungal activities. Preliminary bioassay results indicated that the title compounds showed good to moderate herbicidal activity at 1000 mg/L. Compound 6q presented the best activity against Digitaria sanguinalis （L） Scop., Amaranthus retroflexus L. and Arabidopsis thaliana with an inhibition degree of five. Compound 6d also showed an inhibition degree of five against D. sanguinalis. In addition, at 50 mg/L, most compounds exhibited good in vitro antifungal activity against Sclerotinia sclerotiorum, with compound 6c showing over 90% antifungal activity against S. sclerotiorum and Pellicularia sasakii.

关键词： Amides derivative Pyrazole Furan Synthesis Herbicidal activity Fungicidal activity

Preparation of diffusion coatings in ion-electron melts

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广东有色金属学报 2005年第2期15卷 467-470页

作者： Anfinogenov A.I . Chebykin v.v. Chernov Ya .B. Institute of High-Temperature Electrochemistry Ural Division of RAS Ekaterinburg 620219 Russia

A procedure of Ni, Cr, Mn, Co, and Mo (Me) transfer onto iron substrate in ionic-electronic melts LiCl-Li, CaCl2-Ca, and BaCl2-Ba was elaborated and the transport processes were studied. The saturated vapor pressure of these ionic-electronic melts is as low as enabled working at atmosphere pressure in an inert media up to 1000 ℃.Armco iron was used as a substrate because it practically does not interact with lithium, calcium, and barium. The metals-diffusants were put into the melts in the form of a powder. The complete saturation of the melts with lithium, calcium, and barium was ensured by a preceding contact of a molten salt with an excess of Li, Ca, or Ba before loading of *** reactions take place despite the metals and iron were separated from each other by the molten salt. The quantity of the metals transfered was determined by the change in mass before and after experiments, by microprobe analysis, and x-raying of the iron surface layer. The experiments were carried out at 900, 950 and 1000℃ during 5, 10, 15 and 20 *** the first stage of the process the formation of the ionic-electronic melt occurs. For example, dissolution of calcium in the case of the system CaCl2-Ca is mainly proceeded in the form of one-valent cations: Ca + Ca2+()Ca+. As soon as the metal-diffusance is immersed into the melt, its dissolution in the form of negative ions takes place: Me + Ca+() Me-+ Ca2+. In the vicinity of the iron substrate the last equilibrium will shift to the left generating a solid solution or intermetallide. The thickness of the diffusion layer rises as the temperature and saturation time increase. The obtained coverings were 20-60 (m thick,and their surface layer contained 15%-80% (mass fraction) of the *** the composition of the melt and the procedure of the coverings preparation in ionic-electronic melts have been patented (Patent RU2058422, 1996, pr. 30.09.93).

关键词：金属材料表面处理涂层电化学电子-离子融化法

LOYALTY OF CLIENTS AS FACTOR OF STRENGTHENING OF THE MARKET POSITION OF FIRM

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LOYALTY OF CLIENTS AS FACTOR OF STRENGTHENING OF THE MARKET ...