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Synthesis and Structure Characterization of a Tetranuclear Manganese(Ⅲ) Complex:[Mn_4O_2(O_2CMe)_6(MeOH)_2(dbm)_2]·2MeCOOH·2CH_2Cl_2 被引量:1
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作者 WANG Mei MA Cheng-Bing +2 位作者 WANG Hui-Sheng CHEN Chang-Neng LIU qiu-tian 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2007年第3期295-298,共4页
The title compound, [Mn4O2(O2CMe)6(MeOH)2(dbm)2]·2MeCOOH·2CH2Cl2 (Hdbm = dibenzoylmethane), has been synthesized and structurally determined by single-crystal X-ray diffraction. The crystal belongs t... The title compound, [Mn4O2(O2CMe)6(MeOH)2(dbm)2]·2MeCOOH·2CH2Cl2 (Hdbm = dibenzoylmethane), has been synthesized and structurally determined by single-crystal X-ray diffraction. The crystal belongs to triclinic, space group P/, with a = 10.729(3), b = 12.269(3), c = 13.085(4) A, a = 106.367(3),β = 107.643(2), γ = 94.771(2)°, V = 1547.9(7) A^3, Z = 1, C50H64Cl4Mn4O24, Mr= 1410.57, Dc= 1.513 g/cm^3, F(000) = 724, Rint = 0.0147, T= 293(2) K and p = 1.046 mm ^-1. The final R = 0.0359 and wR = 0.0938 for 5791 observed reflections with 1 〉 2σ(/). The structure of the complex consists of one [Mn4(μ3-O)2]^8+ core with four coplanar Mn atoms disposed in an extended "butterfly-like" arrangement and two O atoms triply bridging each "wing", and the peripheral ligation is provided by six by-MeCO2^-, two terminal ,μ2-dbm- groups at the two ends of the molecule, and two MeOH molecules on the central Mn atoms, lntermolecular O…H-O hydrogen bonding interactions are found within the structure of the compound. 展开更多
关键词 MANGANESE crystal structure photosystem hydrogen bonding
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Synthesis and Crystal Structure of a One-dimensional Azido-bridged Manganese (II) Compound [Mn(N_3)_2(H_2O)_3·C_6H_(12)N_4]_n 被引量:1
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作者 CHEN Hui WANG Wen-Guo ZHANG Xiao-Feng CHEN Chang-Neng LIU qiu-tian 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2006年第2期135-138,共4页
A new one-dimensional azido-bridged manganese compound has been prepared and structurally characterized by X-ray diffraction. The complex [Mn(N3)2(H2O)3·C6H12N4]n crystallizes in space group Pnma with a = 6.5... A new one-dimensional azido-bridged manganese compound has been prepared and structurally characterized by X-ray diffraction. The complex [Mn(N3)2(H2O)3·C6H12N4]n crystallizes in space group Pnma with a = 6.5252 (5), b = 9.3226(7), c = 22.2070(15) ,A°, V= 1350.89(17) ,A°^3, Z = 4, Mr = 333.24, Dc = 1.639 g/cm^3, μ = 1.005 mm^-1 and F(000) = 692. The final refinement gave R = 0.0328 and wR = 0.0777 for 1085 observed reflections with I 〉 2σ(I). The structure contains [Mn(N3)2(H2O)3]n polymeric chains and uncoordinated hexamethylenetetramine (HMTA) molecules with Mn/HMTA molar ratio of 1:1. The Mn atoms are bridged by end-to-end azido ligands to construct one-dimensional zig-zag infinite chains. Each Mn atom is six-coordinated by three N atoms of three azido ligands and three water O atoms, resulting in an octahedral geometry. Extending hydrogenbonding interactions involving water O atoms, azido and HMTA N atoms link the chains and HMTA molecules into a three-dimensional network. 展开更多
关键词 MANGANESE crystal structure AZIDE coordination polymer
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Synthesis and Crystal Structure of(Et_4N)_3[{V(o-C_6H_4OS)_3}_2Na] 被引量:1
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作者 Wen Ting-Bin Xu Yong-Jin +5 位作者 Shi Ji-Cheng Deng Yu-Heng Chen Chang-Neng Liu qiu-tian Kang Bei-Sheng (State Key Laboratory of Structural Chemistry and Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 3500 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 1995年第2期151-156,共6页
Et_4N)_3 [V(mp)_3Na(mp)_3V] was obtained from the reaction of (NH_4)_3VS_4, FeCl_2, Na_2mp(H_2mp=o-mercaptophenol,o-HSC_6H_4OH) and Et_4NCl in CH_3CN. C_(60)H_(84)N_3NaO_6S_6V_2, M_r=1260. 61, monoclinic, space group ... Et_4N)_3 [V(mp)_3Na(mp)_3V] was obtained from the reaction of (NH_4)_3VS_4, FeCl_2, Na_2mp(H_2mp=o-mercaptophenol,o-HSC_6H_4OH) and Et_4NCl in CH_3CN. C_(60)H_(84)N_3NaO_6S_6V_2, M_r=1260. 61, monoclinic, space group C2/c with a=24. 825(8) . b=14.716(5) , c=18. 419(10)A,β=94. 57(3)°, V=6707. 54 A ̄3;Z=4, Dc=1. 248 g/cm ̄3. μ= 5. 002 cm ̄(-1). F(000)=2664. The structure was solved by direct methods and refined to final R(Rω)=0.059(0.059) for 3183 observed reflections with I≥2.5σ(I). The centrosymmetric anion of the title compound contains two [V(mp)_3] ̄(2-) fragments linked by a sodium ion, the crystallographic center of symmetry , through the μ2-O bridges. The Ⅴ(Ⅳ) atom is in a coordination environment intermediate between a trigonal prism and an ideal octahedron. 展开更多
关键词 SYNTHESIS crystal structure o-mercaptophenol vanadium complex
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Synthesis and Crystal Structure of a Two-dimensional Cadmium(Ⅱ) Coordination Polymer:[Cd(AIP)(Bpy)]_n·nBpy(H_2AIP=5-Aminoisophthalic Acid, Bpy=2,2′-Bipyridyl)
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作者 OU Yang-Jun MA Cheng-Bing CHEN Hui WANG Hui-Sheng CHEN Chang-Neng LIU qiu-tian 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2008年第2期159-162,共4页
A two-dimensional coordination polymer, [Cd(AIP)(Bpy)]n.nBpy, was hydrothermally synthesized by the reaction of hydrate cadmium acetate with 5-aminoisophthalic acid, lithium hydroxide, vanadiumpentoxide, sodium ch... A two-dimensional coordination polymer, [Cd(AIP)(Bpy)]n.nBpy, was hydrothermally synthesized by the reaction of hydrate cadmium acetate with 5-aminoisophthalic acid, lithium hydroxide, vanadiumpentoxide, sodium chloride and 2,2′-bipyridyl in water solution. It crystallizes in orthorhombic, space group C222 1, absolute structure parameter 0.00(7), with a = 15.336(4), b = 22.390(6), c = 14.257(3)A, V = 4896(2)/~3, C28H21CdNsO4, Mr = 603.90, Z = 8, F(000) = 2432, Dc = 1.639 g/cm^3, μ = 0.939 mm^-1, T= 298(2) K, S = 1.001, R = 0.0296 and wR = 0.0813 for 5522 observed reflections (I 〉 2a(/)). In the title complex, each 5-aminoisophthalate ligand bridges three cadmium(Ⅱ) ions to form a two-dimensional layer structure. 展开更多
关键词 synthesis crystal structure cadmium complex 5-aminoisophthalic acid
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Syntheses and Structures of Two Novel Salicylate-containing Mononuclear Manganese Complexes
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作者 WANG Hui-Sheng MA Cheng-Bing +2 位作者 WANG Mei CHEN Chang-Neng LIU qiu-tian 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2007年第8期920-923,共4页
Two salicylate containing mononuclear manganese complexes formulated as [Mnand characterized by elemental analysis, IR and single-crystal X-ray diffraction analyses. Crystal data for compound 1: monoclinic, space gro... Two salicylate containing mononuclear manganese complexes formulated as [Mnand characterized by elemental analysis, IR and single-crystal X-ray diffraction analyses. Crystal data for compound 1: monoclinic, space group C2/c, a=30.748(6), b=8.1933(13), c=21.137(4) A, β=126.772(4)°, V=4265.5(13)A^3, Z=8, Mr=471.34, Dc=1.468 g/cm^3, μ=0.667 mm^-1, F(000)=1952,the final R=0.0637, wR=0.1783 (I 〉 2σ(I)) and GOOF=1.073; and those for compound 2: monoclinic,space group C2/c, a=14.505(5), b=11.048(4), c=20.711 (7)(A), β=103.603(6)°, V=3225.6 (18)A^3, Z=4, Mr=668.65, Dc=1.377 g/cm^3, μ=0.466 mm^-1, F(000)=1416, the final R=0.0373, wR=0.1125 (I 〉2σ(I)), and GOOF=1.000. The Mn atoms of both complexes are six-coordinated in an axially elongated octahedral geometry for 1 and an axially compressed octahedral geometry for 2, and their oxidation states have been determined to be trivalent by bond valence sum calculation. 展开更多
关键词 Mn(Ⅲ) SALICYLATE crystal structure axially compressed octahedral geometry
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Synthesis and Crystal Structure of (Et_4N)_2[Pd_2 (mp)_2 (mpH)_2]
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作者 Shi Ji-Cheng Huang Xiao-Ying +4 位作者 Wen Ting-Bin Deng Yu-Heng Cheng Chang-Neng Liu qiu-tian Kang Bei-Sheng(State Key Laboratory of Structural Chemistry and Fujian institute of Research onthe Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 3 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 1995年第4期293-296,共4页
Dinuclear palladium complex (Et_4N)_2[Pd_2(mp)_2 (mpH)_2 (mpH=_2-SC_6H_4OH ) (M_r = 971. 95 ) is prepared in a reaction of sodium 2-mercaptophenolate (Na_2mp) with PdCl_2. It crystallizes in monoclinic with space grou... Dinuclear palladium complex (Et_4N)_2[Pd_2(mp)_2 (mpH)_2 (mpH=_2-SC_6H_4OH ) (M_r = 971. 95 ) is prepared in a reaction of sodium 2-mercaptophenolate (Na_2mp) with PdCl_2. It crystallizes in monoclinic with space group P2_1/n, a=9. 088(1),b=17. 851 (4), c=12. 932(2) , β= 93. 21 (1)°, V=2094. 7(7), D_c=1. 54 g/cm ̄3, F(000) = 1000, Z=2, and final R= 0. 044 and R_w= 0. 055 for 3090 reflections (I≥3σ(I)). Structure analysis revealed the multifunction chelating character of mp functions as S_tO_t(t for terminal) and S_bOH (b for bridging) in the complex. 展开更多
关键词 synthesis crystal structure 2-mercaptophenol dinuclear palladium complex
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Syntheses,Structures and Spectroscopic Properties of Mo(W)-Cu-S-Cluster Compounds with Dialkyldithiocarbamate Ligands
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作者 Cao Rong Lei Xin-Jian +5 位作者 Hong Mao-Chun Xie Xiu-Lan Kang Bei-Sheng Jiang Fei-Long Liu qiu-tian Liu Han-Qin(State Key Labofratory of Structural Chemistry and Fujian Institute of Research on the Structure of Matter,Chinese Academy of Sciences,Fuzhou,Fujian 3500 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 1995年第6期33-43,共11页
This paper presents the synthetic and structure studies of molybdenum(tungsten)-copper-sulphur-dialkyldithiocarbamate cluster compounds.The reactions of(M=Mo,W;n=0,2),CuCl,and R<sub>2</sub>dtc ̄-(R<... This paper presents the synthetic and structure studies of molybdenum(tungsten)-copper-sulphur-dialkyldithiocarbamate cluster compounds.The reactions of(M=Mo,W;n=0,2),CuCl,and R<sub>2</sub>dtc ̄-(R<sub>2</sub>=Me<sub>2</sub>,Et<sub>2</sub>,C<sub>4</sub>H<sub>8</sub>,C<sub>5</sub>H<sub>1</sub>0) yield a series of tetra-,hexa-,and heptanuclear cluster compounds.Their spectroscopic properties and the synthetic reaction mechanism are discussed. 展开更多
关键词 Mo(W)-Cu-S cluster compounds dialkyldithiocarbamate(R2dtc) STRUCTURES reaction mechanism
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直接口服抗凝血药物在骨髓增殖性肿瘤患者血栓防治中的应用
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作者 冯秋天 黄健 《医师在线》 2024年第5期84-87,共4页
骨髓增殖性肿瘤(MPN)是一组由于造血干细胞增殖异常而引起的疾病,包括骨髓纤维化(MF)、真性红细胞增多症(PV)和原发性血小板增多症(ET)。MPN患者常伴随高血液黏稠度,增加了血栓形成的风险,因此抗凝治疗成为MPN管理中不可或缺的一部分。... 骨髓增殖性肿瘤(MPN)是一组由于造血干细胞增殖异常而引起的疾病,包括骨髓纤维化(MF)、真性红细胞增多症(PV)和原发性血小板增多症(ET)。MPN患者常伴随高血液黏稠度,增加了血栓形成的风险,因此抗凝治疗成为MPN管理中不可或缺的一部分。直接口服抗凝血药物(DOAC)作为一类新型抗凝药物,近年来在血栓防治中的应用逐渐引起关注。本综述将详细探讨DOAC在MPN患者血栓防治中的应用现状、优势与不足、临床研究进展以及未来发展方向。 展开更多
关键词 直接口服抗凝血药物 骨髓增殖性肿瘤 血栓防治
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膝关节骨性关节炎的针灸治疗选穴特点及其分析 被引量:6
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作者 邱桥 田岳凤 《山西中医学院学报》 2016年第6期54-56,共3页
目的:通过总结膝关节骨性关节炎针灸选穴特点,分析膝关节骨性关节炎的病因病机及诊疗特点,从而更好地指导临床,为以后膝关节骨性关节炎的治疗及预防打下坚实的基础。方法:主要运用文献检索的方式,对近十年来针灸治疗膝关节骨性关节炎临... 目的:通过总结膝关节骨性关节炎针灸选穴特点,分析膝关节骨性关节炎的病因病机及诊疗特点,从而更好地指导临床,为以后膝关节骨性关节炎的治疗及预防打下坚实的基础。方法:主要运用文献检索的方式,对近十年来针灸治疗膝关节骨性关节炎临床报道文献进行整理,并结合实际临床观察,研究膝关节骨性关节炎的病因病机及诊疗方案。结果:共纳入137篇文献,涉及的腧穴及阳性刺激点共61个,取穴总频数为937次,涉及的十四经共10条,其中足太阳膀胱经腧穴数目最多,足阳明胃经的取穴频数最多;分布部位以下肢膝关节周围最多。结论:针灸治疗膝骨性关节炎选穴时以循经取穴和局部取穴为原则,重在起到补益肝肾气血,祛除风寒湿邪以及通络止痛的作用。 展开更多
关键词 膝关节骨性关节炎 针灸 选穴特点 病因病机
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基于改进区域生长和小波变换的非结构化道路检测
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作者 龙邱天 王靖岳 +3 位作者 薛春伟 武旭东 郑珺文 王军年 《科学技术与工程》 北大核心 2023年第33期14271-14277,共7页
针对在复杂场景的非结构化道路中,由于众多的环境干扰因素从而不能准确检测车道线的问题,提出了一种基于改进区域生长法和小波变换相结合的非结构化道路检测算法。根据大多数情况下道路区域在车载摄像头的正下前方及道路区域与道路两旁... 针对在复杂场景的非结构化道路中,由于众多的环境干扰因素从而不能准确检测车道线的问题,提出了一种基于改进区域生长法和小波变换相结合的非结构化道路检测算法。根据大多数情况下道路区域在车载摄像头的正下前方及道路区域与道路两旁背景灰度值的一定差异,来有效地选取区域生长的种子点及生长原则进行区域生长道路初分割。同时结合基于小波变换的边缘检测来修正由于初分割道路受复杂环境导致道路检测不准确的情况。实验结果表明,该算法能够较准确地检测出受光照等因素影响的道路区域,且具有较高的准确性。 展开更多
关键词 汽车工程 非结构化道路 区域生长法 小波变换 道路分割
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供油压力对电液可变气门系统压力波动的影响 被引量:4
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作者 韩志强 赵家辉 +3 位作者 邱鹏 田维 韩伟强 夏琦 《江苏大学学报(自然科学版)》 EI CAS CSCD 北大核心 2017年第5期516-521,共6页
液力波动直接影响电液式可变气门系统开闭特性,进而间接影响缸内气体状态参数.基于柴油机电液式可变气门系统工作过程,建立了压力波动系统化评价参数,并通过该评价参数,分析了供油压力(2.5~4.5 MPa)对柴油机可变气门系统压力波动的影响... 液力波动直接影响电液式可变气门系统开闭特性,进而间接影响缸内气体状态参数.基于柴油机电液式可变气门系统工作过程,建立了压力波动系统化评价参数,并通过该评价参数,分析了供油压力(2.5~4.5 MPa)对柴油机可变气门系统压力波动的影响.结果表明:随着供油压力的增加,各压力波动特征值相位(α_1-α_8)均提前,峰值压力p_1,p_2均增加;压力波动区间(β_1,β_2,β_4)的压差、压力突变率均增加,区间β5的压力突变率先增加后减小并趋于平缓;区间β_3的压力波动平均值、波动率及波动方差增大;区间β_6的压力波动平均值几乎不变,波动率变化幅度较小,波动方差值增幅较缓. 展开更多
关键词 柴油机 可变气门系统 供油压力 压力波动 特征参数
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Synthesis and Structural Characterization of [Mn(phen)_2(H_2O)_2](OAc)_26H_2O 被引量:2
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作者 ZHANG Xiao-Feng HUAND De-Guang CHEN Feng CHEN Chang-Neng LIU qiu-tian (State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, The Chinese Academy of Sciences, Fuzhou 350002, China) 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 北大核心 2003年第5期525-528,共4页
The title complex [Mn(phen)2(H2O)2](OAc)26H2O (phen = 1,10-phenanthroline, C12H8N2, OAc = acetate, C2H3O2) with formula C28H38MnN4O12 and Mr = 677.56 has been syn- thesized and structurally characterized by X-ray diff... The title complex [Mn(phen)2(H2O)2](OAc)26H2O (phen = 1,10-phenanthroline, C12H8N2, OAc = acetate, C2H3O2) with formula C28H38MnN4O12 and Mr = 677.56 has been syn- thesized and structurally characterized by X-ray diffraction. The crystal is of triclinic, space group P ?with a = 9.6201(5), b = 13.4663(7), c = 14.5375(8) , a = 108.428(1), b =93.898(1), g = 110.492(1), V = 1639.5(2) ?, Dc = 1.373 g/cm3, F(000) = 710, = 0.468 cm-1 and Z = 2. The final refinement gave R = 0.0522 and wR = 0.1259 for 4714 observed reflections with I > 2s(I). It consists of discrete [Mn(phen)2(H2O)2]2+ cation, two acetate anions and six lattice water molecules. The MnII ion coordinated by four nitrogen atoms from two chelating phen and two oxygen atoms from two cis-related water molecules is in a distorted octahedral coordination environment. Two OAc- anions and six water molecules exist outside the [Mn(phen)2(H2O)2]2+ cation as counter ions and solvate molecules, respectively. The cations and anions are interconnected by the solvate water molecules which are hydrogen bonded to both aqua ligands and acetate oxygen atoms, building up the crystals of this compound to be a supramolecule-like aggregate. 展开更多
关键词 manganese crystal structure SYNTHESIS 1 10-PHENANTHROLINE ACETATE
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改良术式在单侧不完全性唇裂整复治疗的应用 被引量:3
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作者 叶向阳 邱林 +4 位作者 田晓菲 傅跃先 刘燕 肖军 李天武 《重庆医科大学学报》 CAS CSCD 北大核心 2016年第12期1303-1306,共4页
目的:探讨单侧不完全性唇裂的改良手术方式,以获得更为满意的手术效果。方法:选取我院2014年1月至2015年5月期间单侧不完全唇裂59例,设计改良直线切口术式进行唇裂修复,并同时进行初期鼻畸形修复。术后对唇鼻软组织进行精确测量,并由... 目的:探讨单侧不完全性唇裂的改良手术方式,以获得更为满意的手术效果。方法:选取我院2014年1月至2015年5月期间单侧不完全唇裂59例,设计改良直线切口术式进行唇裂修复,并同时进行初期鼻畸形修复。术后对唇鼻软组织进行精确测量,并由3名专科医师对手术效果进行主观与客观评价。结果:本组共进行59例病例,年龄从19天~9.7岁。随访6月~1.5年,所有病例唇部修复取得良好手术效果,患侧切口瘢痕位于人中嵴,重建人中自然,避免患侧鼻底及鼻小柱下方瘢痕;唇高满意,唇弓线明显,唇红线及唇红缘整齐弧线良好;上唇运动时口轮匝肌连续性好,患侧无局部球状突起。38例鼻部畸形矫正取得良好效果,双侧鼻孔基本对称,鼻底宽度一致,鼻穹窿高度满意;12例鼻部畸形取得中等良好矫正效果,患侧鼻孔较健侧略为低平;9例鼻形维持效果差,2月后鼻穹窿下移回复明显(术后未佩戴鼻模)。结论:本改良术式运用于单侧不完全性唇裂,可获得接近于自然唇鼻形态更为良好的术后效果。 展开更多
关键词 单侧不完全性唇裂 修复 改良术式
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Synthesis and Crystal Structure of Nickel Complex of DSEN 被引量:2
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作者 WANG Chang-Feng SONG Shi-Dong +5 位作者 YANG Guang-Ming ZHANG Ruo-Hua ZHAo Wei-Jun ZHU Hong-Ping CHEN Chang-Neng LIU qiu-tian(College of Chemistry, Nankai University, tianJin, 300071)(State Key Laboratory of Structural Chemistry, Fuzhou, 350002) 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 1998年第2期85-88,共4页
The crystal of the title compound [Ni(dsen)]. EtOH, C32H32NiN2O5,Mr= 583. 33, (dsen = N, N'-disalicylidene-1, 2-dirnethoxyphenylethylenediamine) has been prepared and determined by X-ray single crystal diffraction... The crystal of the title compound [Ni(dsen)]. EtOH, C32H32NiN2O5,Mr= 583. 33, (dsen = N, N'-disalicylidene-1, 2-dirnethoxyphenylethylenediamine) has been prepared and determined by X-ray single crystal diffraction. The crystal belongs to the orthorhombic space group Pbca with parameters: observab1e reflections.The result reveals that nickel ion is coordinated by two nitrogen atoms of azomethene and two phenoxy atoms of the ligand. The coordination geometry around the Ni(II) is close to a Square plane (D4h). 展开更多
关键词 Schiff base complex of nickel crystal structure
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虎耳草活性成分的提取及功效评价 被引量:2
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作者 张立萍 佘秋钿 +3 位作者 范敏 游瑞云 刘琳 卢玉栋 《广州化学》 CAS 2021年第1期39-44,共6页
对虎耳草全草中总黄酮物质进行有效提取,并将蒸发浓缩后的虎耳草提取液分别进行了体外抗氧化、抗炎、抑菌性能以及美白功效等研究。结果表明,虎耳草提取液在较高浓度时的抗氧化功效与维生素C相当;具有良好的抑制炎症性能,其乙酸乙酯萃... 对虎耳草全草中总黄酮物质进行有效提取,并将蒸发浓缩后的虎耳草提取液分别进行了体外抗氧化、抗炎、抑菌性能以及美白功效等研究。结果表明,虎耳草提取液在较高浓度时的抗氧化功效与维生素C相当;具有良好的抑制炎症性能,其乙酸乙酯萃取物消炎性能更优;虎耳草提取物能够抑制常见的普通细菌的生长,其正丁醇萃取物抑菌性能最佳;在美白功效测试实验中提取液浓度为4000μg/mL时对酪氨酸酶活性的抑制率为79.25%。 展开更多
关键词 虎耳草 抗氧化 抑菌性能 黄酮
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基于物联网与云平台的PET反应釜远程监控系统 被引量:2
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作者 王华强 徐秋田 《仪表技术与传感器》 CSCD 北大核心 2016年第12期79-82,共4页
以PET反应釜监控系统为背景,设计并实现了基于物联网与云平台的远程工业监控系统。利用移动互联网技术,实现了让用户通过移动客户端对PET反应釜的状态进行远程监控,以便于对反应釜各项参数实时了解。实际测试表明:该监控系统运行稳定,... 以PET反应釜监控系统为背景,设计并实现了基于物联网与云平台的远程工业监控系统。利用移动互联网技术,实现了让用户通过移动客户端对PET反应釜的状态进行远程监控,以便于对反应釜各项参数实时了解。实际测试表明:该监控系统运行稳定,达到了远程通信安全、即时的要求。 展开更多
关键词 远程控制系统 聚对苯二甲酸乙二酯 反应釜 物联网 云平台
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Tos改良联合进路钛听骨植入鼓室成形的疗效观察 被引量:1
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作者 史敏 唐凤珠 +3 位作者 瞿申红 陆秋天 王涛 袁弘 《中国内镜杂志》 2018年第9期7-10,共4页
目的观察符合条件的慢性化脓性中耳炎患者行Tos改良联合入路清理病变并一期植入钛人工听骨行鼓室成形的效果。方法回顾性分析34例在该院施行Tos改良联合入路乳突开放并植入钛人工听骨行鼓室成形的慢性化脓性中耳炎病例,总结患者手术前... 目的观察符合条件的慢性化脓性中耳炎患者行Tos改良联合入路清理病变并一期植入钛人工听骨行鼓室成形的效果。方法回顾性分析34例在该院施行Tos改良联合入路乳突开放并植入钛人工听骨行鼓室成形的慢性化脓性中耳炎病例,总结患者手术前后听力及影像学特点,观察手术前后言语频率气导听阈变化。结果以术中听骨破坏情况分组,镫骨板上结构缺失组植入全听骨赝复体(TORP)后听力改善(36.25±6.12)dB HL;砧蹬关节中段组植入部分听骨赝复体(PORP)后听力改善(13.18±3.37)dB HL。术后无钛听骨移位、感染,听力改善有效率97.06%(P<0.05)。1~3个月全部干耳。结论 Tos改良联合入路鼓室成形并一期植入钛人工听骨能有效地清理中耳病变,尤其是清理后鼓室的隐匿病变,并有效提高听力,术前高分辨率CT(HRCT)发现乳突气化不良,尤其有乙状窦前移、脑板低位和面神经低位等不利于暴露的解剖变异时,可优先选择此术式。 展开更多
关键词 Tos改良联合进路 鼓室成形术 钛听骨植入
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表位依赖型急性期戊型肝炎诊断抗原的制备与抗原性分析 被引量:1
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作者 苏秋东 郭敏卓 +4 位作者 伊瑶 邱丰 田瑞光 毕胜利 贾志远 《国际病毒学杂志》 2017年第1期9-12,共4页
目的原核表达制备表位依赖型戊型肝炎诊断抗原,并对其抗原性及其在急性戊肝诊断的性能进行评价。方法以包含密码子优化的GST、HEV优势表位的H15质粒为模板,PCR获取GST-HEV优势表位片段,将其插人表达质粒pET43.1a中,在大肠杆菌中进... 目的原核表达制备表位依赖型戊型肝炎诊断抗原,并对其抗原性及其在急性戊肝诊断的性能进行评价。方法以包含密码子优化的GST、HEV优势表位的H15质粒为模板,PCR获取GST-HEV优势表位片段,将其插人表达质粒pET43.1a中,在大肠杆菌中进行表达;利用亲和层析和阴离子交换层析纯化目的蛋白;利用Western Blotting技术对目的蛋白抗原性进行鉴定;建立HEV-IgM抗体检测ELISA方法,初步评价其对阴、阳血清样本的鉴别能力。结果获取高度均质的表位依赖型急性戊肝诊断抗原;WB实验表明目的蛋白不但可以被anti-GST单克隆抗体识别,还可以被戊肝急性期血清相应抗体所识别;分别对60份戊肝急性期血清、阴性血清进行检测,发现其与临床和实验室诊断结果一致性较高。结论原核表达与层析纯化可以获取抗原性优异的表位依赖型急性戊肝诊断抗原,偶联HRP后可应用于HEV-IgM ELISA血清学检测。 展开更多
关键词 多表位抗原 戊型肝炎病毒 原核表达 层析纯化 偶联反应
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Synthesis and Structure of Ru (pap)_2Cl_2 · 4EtOH
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作者 Zhao Wei-Jun Zhang Shu-Ji +4 位作者 Deng Yi Zhang Zheng-Zhi Ma Yan-Feng Huang Wei-Ping Wang Hong-Gen(Department of Chemistry, Institute of Elemento-Organic Chemisty,and Central Laboratory,Nankai University, tianjin 300071, China) Liu qiu-tian(State Key Laboratory o 《Chinese Journal of Structural Chemistry》 SCIE CAS CSCD 1996年第1期44-46,共3页
The reaction of Ru (DMSO)_4Cl_2 with Dipheny1-[(pyrid-2-y1 ) amino]phosphine (pap) (1:2) gives the title compound Ru(PAP)_2Cl_2· 4EtoH. The crystallographic data for C_(24)H_(54)C_(12)N_4O_4P_2Ru: monoclinic,spac... The reaction of Ru (DMSO)_4Cl_2 with Dipheny1-[(pyrid-2-y1 ) amino]phosphine (pap) (1:2) gives the title compound Ru(PAP)_2Cl_2· 4EtoH. The crystallographic data for C_(24)H_(54)C_(12)N_4O_4P_2Ru: monoclinic,space group C2/c .α= 20. 47 (1) . b = 15. 431(9), c=15. 958(8) A , β=16. 82(4)°, V=4509(9) A3 ̄, Z=4, M_r= 912. 85, D_c= 1. 35 g/cm ̄3,μ(MoKα) = 5. 71 cm ̄(-1), F(000) =1092, R= 0. 073 and R_w = 0. 081 for 1700 observed reflections. The Ru atom is coordinated by two P atoms, two N atoms and two Cl atoms, forming octahedral coordination geomery. 展开更多
关键词 crystal structure SYNTHESIS PHOSPHINE Ru complex
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CLPP基因新变异导致Perrault综合征的致病性鉴定
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作者 周凯 卢宇 +5 位作者 袁慧军 瞿申红 陆秋天 黄兰诚 林钻平 唐凤珠 《中国听力语言康复科学杂志》 2021年第3期179-182,共4页
目的探讨一个耳聋合并智力障碍的中国家系的致病原因。方法收集该家系的临床表型、听力学及影像学等资料,应用耳聋基因靶向测序和Sanger测序法检测先证者目标基因的变异,并在家系其他成员中进行Sanger测序验证。结果该家系内患病个体男... 目的探讨一个耳聋合并智力障碍的中国家系的致病原因。方法收集该家系的临床表型、听力学及影像学等资料,应用耳聋基因靶向测序和Sanger测序法检测先证者目标基因的变异,并在家系其他成员中进行Sanger测序验证。结果该家系内患病个体男性患者表现为耳聋合并癫痫,运动功能障碍;女性患者表现为耳聋合并智力障碍,四肢肌无力,共济失调以及乳房发育差、月经初潮推迟等生殖系统发育不良表现。测序结果显示该家系中两名同胞患者检出CLPP基因c.661G>T和c.328delA复合杂合变异,先证者父亲检出CLPP基因c.661G>T杂合变异,先证者母亲检出CLPP基因c.328delA杂合变异,CLPP基因c.661G>T和c.328delA变异均为截短突变,此前未见报道,判定为新的致病性变异。结论CLPP基因c.661G>T和c.328delA复合杂合变异为导致该家系Perrault综合征3型的致病原因,该变异的检出丰富了CLPP基因的突变谱。 展开更多
关键词 CLPP基因 综合征性聋 Perrault综合征 智力障碍
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