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EFFECTS OF TREATMENT TEMPERATURE ON The MICROSTRUCTURE AND MAgNETIC PROPERTIES OF Fe-N THIN FILMS

创新驱动发展提高气象灾害防御能力——第30届中国气象学会年会

作者： P.S.zhao F.Dong D.he X.J.zhao X.L.zhang W.z.zhang Q.Yao H.Y.Liu Institute of Urban Meteorology China Meteorological Administration Meteorological Science Institute of hebei Meteorological Science Institute of Tianjin Chengde Meteorological Bureau

In order to study the temporal and spatial variations of PM 2.5 and its chemical compositions in the region of Beijing, Tianjin, and hebei (BTH), PM 2.5 samples were collected at four urban sites in Beijing (BJ), Tianjin (TJ), Shijiazhuang (SJz), and Chengde (CD), and also one site at Shangdianzi (SDz) regional background station over four seasons from 2009 to 2010. The samples were weighted for mass concentrations and analyzed in the laboratory for chemical profiles of 19 elements (Al, As, Ba, Ca, Cd, Co, Cr, Cu, Fe, K, Mg, Mn, Ni, P, Pb, Sr, Ti, V, and zn), eight water-soluble inorganic ions (Na+ , NH4+ , K+ , Mg2+ , Ca2+ , Cl- , NO3- , and SO42- ), and carbon fractions (OC and EC). The concentrations of PM 2.5 and its major chemical species were season dependent and showed spatially similar characteristics in the plain area of BTH. The average annual concentrations of PM 2.5 were 71.8-191.2 μgm -3 at the five sites, with more than 90% of sampling days exceeding 50 μg m -3 at BJ, TJ, and SJz. PM 2.5 pollution was most serious at SJz, and the annual concentrations of PM 2.5 , secondary inorganic ions, OC, EC, and most crustal elements were all highest. Due to stronger photochemical oxidation, the sum of concentrations of secondary inorganic ions (NH4+ , NO3- , and SO42- ) was highest in the summer at SDz, BJ, TJ, and CD. Analysis of electric charges of water-soluble inorganic ions indicated the existence of nitric acid or hydrochloric acid in PM 2.5 . For all five sites, the concentrations of OC, EC and also secondary organic carbon (SOC) in the spring and summer were lower than those in the autumn and winter. SOC had more percentages of increase than primary organic carbon (POC) during the winter. The sums of crustal elements (Al, Ca, Fe, Mg, Ti, Ba, and Sr) were higher in the spring and autumn owing to more days with blowing or floating dust. The concentrations of heavy metals were at higher levels in the BTH area by comparison with other studies. In Shijiazhuang

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Acta Metallurgica Sinica(English Letters) 2007年第4期20卷 293-300页

作者： B.L. Li H.M. Du X.F. Wang E.Y. Jiang z.Q.Li P. Wu Department of Applied Physics Institute of Advanced Materials Physics School of Science Tianjin University Tianjin 300072 China Tianjin Key Laboratory of Low Dimensional Materials Physics and Preparing Technology Tianjin University Tianjin 300072 China

Fe-N thin films were fabricated on both 100Si and NaCl substrates by RF magnetron sputtering under low nitrogen partial pressure. The microstructure and magnetic properties of Fe-N thin films were investigated with the increase of the substrate temperature （Ts） and the annealing temperature （Ta）. It is more difficult for nitrogen atoms to enter the Fe lattice under higher Ts above 150℃. The phase evolution is visible at higher Ta above 200℃. The phase transformation of α＇＇-Fe16N2 occurred at 400℃. The change of crystal size with Ta was clearly visible from bright and dark field images. The clear high-resolution electron microscope （HREM） images of 110α, 111γ＇, 112α＇＇, and 200α＇＇ phases were observed. The interplanar distances from TEM （transmission electron microscope） and HREM match the calculated values very well. From the results of the vibrating sample magnetometer （VSM）, the good magnetic properties of Fe-N films were obtained at 150℃ of Ts and 200℃ of Ta, respectively.

关键词： Fe-N thin film magnetic property HREM α''-Fe16N2

Calcitriol analog zK191784 ameliorates acute and chronic dextran sodium sulfate-induced colitis by modulation of intestinal dendritic cell numbers and phenotype

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World Journal of gastroenterology 2007年第48期13卷 6529-6537页

作者： Ulrike g Strauch Florian Obermeier Nicole grunwald Nadja Dunger heiko C Rath Jürgen Schlmerich A Steinmeyer U zügel HH herfarth Department of Internal MedicineⅠ University of Regensburg Medicinal Chemistry Schering AG Berlin Germany Research Business Area Dermatology Schering AG Berlin Germany

AIM: To investigate the effects of zK1916784, a low calcemic analog of calcitriol on intestinal inflammation. METHODS: Acute and chronic colitis was induced by dextran sodium sulfate (DSS) according to standard procedures. Mice were treated intraperitoneally with zK1916784 or placebo and colonic inflammation was evaluated. Cytokine production by mesenterial lymph node (MLN) cells was measured by ELISA. Immunohistochemistry was performed to detect intestinal dendritic cells (DCs) within the colonic tissue, and the effect of the calcitriol analog on DCs was investigated. RESULTS: Treatment with zK191784 resulted in significant amelioration of disease with a reduced histological score in acute and chronic intestinal inflammation. In animals with acute DSS colitis, down- regulation of colonic inflammation was associated with a dramatic reduction in the secretion of the proinflammatory cytokine interferon (IFN)-γ and a significant increase in intereleukin (IL)-10 by MLN cells. Similarly, in chronic colitis, IL-10 expression in colonic tissue increased 1.4-fold when mice were treated with zK191784, whereas expression of the Th1-specific transcription factor T-beta decreased by 81.6%. Lower numbers of infiltrating activated CD11c+ DCs were found in the colon in zK191784-treated mice with acute DSScolitis, and secretion of proinflammatory cytokines by primary mucosal DCs was inhibited in the presence of the calcitriol analog. CONCLUSION: The calcitriol analog zK191784 demonstrated significant anti-inflammatory properties in experimental colitis that were at least partially mediated by the immunosuppressive effects of the derivate on mucosal DCs.

关键词：右旋糖苷硫酸钠大肠炎树状细胞

中国子宫内膜增生临床诊疗路径(2024年版)

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中国实用妇科与产科杂志 2024年第4期40卷 417-422页

作者：李雷郎景和田秦杰陈晓军程文俊崔满华符淳卢美松白文佩常青陈捷程玉芬冯炜炜古健韩晓兵胡丽娜刘木彪陆雯任琛琛沈丹华宋坤王世宣王颖梅王悦王悦谢梅青许泓杨晓葵张瑜赵卫东郑祥钦郑莹朱兰中国医学科学院北京协和医院北京100730 复旦大学附属妇产科医院上海200011 江苏省人民医院江苏南京210029 吉林大学第二医院吉林长春130041 中南大学湘雅二医院湖南长沙410011 哈尔滨医科大学附属第一医院黑龙江哈尔滨150001 首都医科大学附属北京世纪坛医院北京100038 陆军军医大学西南医院重庆400038 福建省人民医院福建福州350000 江西省妇幼保健院江西南昌330006 上海交通大学医学院附属瑞金医院上海200025 中山大学附属第三医院广东广州510630 西安交通大学第一附属医院陕西西安710061 重庆医科大学附属第二医院重庆400010 珠海市人民医院广东珠海519000 上海市第一妇婴保健院上海201204 郑州大学第三附属医院河南郑州450052 北京大学人民医院北京100044 山东大学齐鲁医院山东济南250012 华中科技大学同济医学院附属同济医院湖北武汉430030 天津医科大学总医院天津300070 河南省人民医院河南郑州450003 浙江大学医学院附属妇产科医院浙江杭州310006 中山大学孙逸仙纪念医院广东广州510120 上海国际和平妇幼保健院上海200030 首都医科大学附属北京妇产医院北京100026 中南大学湘雅医院湖南长沙410119 安徽省立医院安徽合肥230001 福建省妇幼保健院福建福州350000 四川大学华西第二医院四川成都610041

子宫内膜增生定义为子宫内膜增生程度超出正常增生期范畴,分为子宫内膜增生不伴非典型性和子宫内膜非典型增生两类[1]。长期无孕激素保护的雌激素暴露是子宫内膜增生的主要发病机制,相关高危因素包括:生殖内分泌相关因素、医源性因素、... 详细信息

子宫内膜增生定义为子宫内膜增生程度超出正常增生期范畴,分为子宫内膜增生不伴非典型性和子宫内膜非典型增生两类[1]。长期无孕激素保护的雌激素暴露是子宫内膜增生的主要发病机制,相关高危因素包括:生殖内分泌相关因素、医源性因素、代谢相关疾病、合并分泌性激素肿瘤及遗传因素等。异常子宫出血是子宫内膜增生最常见的临床表现[2],绝经前患者主要表现为月经周期频率、规律性、经量和(或)经期的改变,或经间期出血.

关键词：子宫内膜增生诊断治疗

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提取方式对十字花科蔬菜中异硫氰酸酯的影响

食品研究与开发 2022年第8期43卷 47-53页

作者：张尧 Nyasha Makaza 吕城枝孙娟宋新杰 Sabir z Nishanbaev 吴元锋毛建卫浙江科技学院生物与化学工程学院浙江杭州310023 浙江省农业生物资源生化制造协同创新中心(2011协同创新中心) 浙江杭州310023 乌兹别克斯坦科学院植物化学研究所乌兹别克斯坦塔什干100170

通过环缩合法和气质联用法探究先酶解后提取(hydrolysis followed by extraction,HFE)和酶解-提取同时进行(simultaneous hydrolysis and extraction,She)两种提取方式对6种十字花科蔬菜(萝卜、芥菜、榨菜、甘蓝、花菜和西兰花)种子中... 详细信息

通过环缩合法和气质联用法探究先酶解后提取(hydrolysis followed by extraction,HFE)和酶解-提取同时进行(simultaneous hydrolysis and extraction,She)两种提取方式对6种十字花科蔬菜(萝卜、芥菜、榨菜、甘蓝、花菜和西兰花)种子中异硫氰酸酯(isothiocyanate,ITC)种类和含量的影响,并分析B16细胞抑制活性和NAD(P)H:醌氧化还原酶1[NAD(P)H:quinone oxidoreductase 1,NQO1]诱导活性受提取物影响的差异。环缩合法的结果表明,与HFE相比She可显著提高西兰花和萝卜种子ITC含量(Phe比HFE显著提高了萝卜种子中莱菔素(3.26倍)、erucin、raphasatin、4-MI和B,4-I-1,西兰花种子中erucin(1.63倍)和芥菜、甘蓝、花菜和西兰花种子中iberverin的含量(Phe增加了芥菜和西兰花种子中ITC的种类,分别为iberverin和octane(OCT),并减少了花菜种子中ITC的种类,cyclopropyl isothiocyanate(CP)。两种方法对alyssin、iberin等其他ITC种类和含量无显著影响(P>0.05)。细胞活性试验表明,She组萝卜、甘蓝、花菜和西兰花种子提取液的细胞抑制率均显著高于HFE组(Phe组西兰花种子的NQO1诱导活性显著高于HFE组(P<0.05)。

关键词：提取方式十字花科蔬菜异硫氰酸酯(ITC) 气相色谱-质谱抗氧化活性

Crystal Structure of Tris(2,2'-bipyridine)nickel(II) Tetrachlorozincate

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Chinese Journal of Structural Chemistry 2000年第2期19卷 95-98页

作者： LIN Shan Huo a WANg zhi Kui b zHANg Ba he b HU Huai Ming a HUANg Jin Shun a* a(State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, the Chinese Academy of Sciences, Fuzhou 350002)b(Depart 中科院福建物质结构所结构化学国家重点实验室福建福州 3 50 0 0 2 山西师范大学山西西安 71 0 0 6 2

A bimetallic complex Ni〔C 10 H 8N 2〕 3〔znCl 4〕 has been synthesized and its crystal structure determined at room temperature. The complex crystallizes in the trigonal system, space group R3c, with a = 13.343(2), b = 13.343(2), c = 58 932(12) , V= 9087(3)  3, z = 12 , NiznC 30 N 6Cl 14 H 24 , M r=734.30, D c =1 611 g/cm 3, μ =1.799 mm -1 , F (000)=4464. Least squares refinement of the structure leads to the agreement factors R 1=0.0278 and wR 2 =0.0741 for the observable reflections. The complex consists of discrete tris(2,2’ bipyridine) nickel(II) cation, 〔Ni (bipy) 3〕 2+ , and tetrachlorozincate anion, 〔znCl 4〕 2- . Each nickel(II) atom is six coordinated in an octahedron with six nitrogen atoms of three 2,2’ bipyridine ligands. The mean Ni(II)-N bond length is 2.089(2) . The zinc(II) atom is coordinated with four chloride atoms in tetrahedral geometry. The mean zn(II)-Cl bond length is 2 264(1) .

关键词： crystal structure bimetallic compound tris(2 2’ bipyridine)nickel tetrachlorozincate

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煤岩孔隙结构3D建模与孔隙度计算

Applied geophysics 2022年第2期19卷 161-172,306页

作者：李琼陈政岳林张宇何建军李勇成都理工大学地球物理学院四川成都610059 地球勘探与信息技术教育部重点实验室(成都理工大学) 四川成都610059 成都理工大学计算机与网络安全学院(牛津布鲁克斯学院) 四川成都610059

煤岩是一种双重孔隙介质,由基质孔隙和切割基质的裂隙组成,二者对流体的渗流和储集起着不同的作用,构建煤岩的微观孔隙结构对研究煤层气勘探开发中具有重要意义。在本研究中,我们使用煤岩数字岩芯和三维建模来研究煤岩的孔隙结构。首先... 详细信息

煤岩是一种双重孔隙介质,由基质孔隙和切割基质的裂隙组成,二者对流体的渗流和储集起着不同的作用,构建煤岩的微观孔隙结构对研究煤层气勘探开发中具有重要意义。在本研究中,我们使用煤岩数字岩芯和三维建模来研究煤岩的孔隙结构。首先利用煤岩2D薄片图像对其微观孔隙结构进行了定量分析,提取了煤岩孔隙和裂缝(割理)结构的定量信息,分析得到了实际煤岩薄片的面孔隙度以及孔隙半径的均值和标准差。使用二分法和基于压缩的球形随机堆积法确定孔隙数量。结合岩石物理分析结果,以非等径球体表示煤岩孔隙,得到了煤岩单重孔隙结构模型。随后,以纵横比远小于1的椭球表示煤岩中的裂缝(割理),进而得到了煤岩的双重孔隙结构模型。在此基础上,探究了不同孔隙纵横比与孔隙度之间的关系,得到了拟合关系式,结果表明两者之间存在非线性关系。此关系模型可为煤岩孔隙结构、孔隙结构参数预测和煤层气储层内部结构认识提供参考。

关键词：煤岩 3D孔隙结构随机堆积方法孔隙度孔隙纵横比非线性拟合关系

Effect of 31.2T Magnetic Field on Microstructure and Performance of an Ag-45.8wt%Ni Alloy

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Journal of Iron and Steel Research(International) 2012年第S2期19卷 1063-1067页

作者： zHANg Lin HAN Ke WANg En-gang zUO Xiao-wei he Ji-cheng Key Laboratory of Electromagnetic Processing of Materials(Ministry of Education) Northeastern University National High Magnetic Field Laboratory Florida State University

Ag/Ni Multilayers were prefabricated by Accumulative Roll-Bonding(ARB),with an average layer thickness ranging 20-100 *** Ag-45.8wt%Ni alloys were annealed under 31.2T high magnetic field to study its effect on microstructure and performance.31.2T high magnetic field significantly suppressed the coarsening of layer structure during annealing,the magnetic field parallel to the layer has a larger suppression *** the annealing temperature increased,the resistivity of Ag/Ni multilayers increased,and the hardness *** case of perpendicular high magnetic field has the largest resistivity and the largest hardness,compared with the other two *** hysteresis loops shows that Ag-Ni has a hard ferromagnetic *** case of parallel magnetic field has the largest coercivity about 90gs.

关键词： Ag-Ni high magnetic field annealing microstructure resistivity hardness hysteresis loops

Solidification Structure of Cu-Fe Alloy under a Rotary Electromagnetic Stirrer

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Journal of Iron and Steel Research(International) 2012年第S1期19卷 351-354页

作者： QU Lei WANg En-gang zUO Xiao-wei zHANg Lin he Ji-cheng Key Laboratory of Electromagnetic Processing of Materials(Ministry of Education) Northeastern University

The effect of rotary electromagnetic stirring(EMS)on the Cu grain size and Fe dendrites is investigated in this paper,in order to get a Cu-Fe alloy ingot with good *** macro-and micro-structures are observed by Leica-DMR optical *** solidification structures of Cu-2 and 8wt.%Fe consist with finer equiaxed grains. The Cu grain size is most sensitive to the Fe *** can't effectively improve the grain size for the Cu-Fe alloy. For ingot cooled without EMS,there are also many large Fe-rich particles distribute in the Cu-matrix,beside the Fe dendrites,because of the existence of metastable miscibility gap in the undercooled liquid *** the Fe-rich phases are not found in the ingots with EMS,indicating the EMS can affect the undercooling of the liquid and further restrain the liquid phase *** the EMS,the Fe dendrites break up into many smaller Fe *** the size of Fe fragments decreases with the increasing stirring current.

关键词： Cu-Fe alloy rotary electromagnetic stirring grain size Fe dendrites