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Ship-in-bottle formation of Ru_3(CO)_(12) in NaY zeolite

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Chinese Journal of Chemistry 1994年第3期12卷 258-264页

作者： XIAO, Feng-shou XU, Ru-ren HE, Ya-Nan Department of Chemistry, Jilin University, Changchun, Jilin 130023, China Department of Chemistry Jilin University Changchun Jilin 130023 China

NaY zeolite entrapped Ru3(CO)12 cluster has been synthesized from RuCl3 ion-exchanged NaY, which is well characterized by IR and Raman spectroscopies and CO chemisorp-tion. When the Ru3+/NaY sample is heated from 298 K to 393 K for 25 h and for 10 h at 393 K, the sample colour changes from dark to brown-yellow. The in situ infrared spectrum exhibits absorption bands at 2130, 2064, 2040, 2017, 1990, 1953 and 1925 cm-1. The bands at 2130 cm-1 arises from the Runm+(CO)l m =1-3;n = 1 - 3; l = 1-12). The bands at 2064, 2040, 2017 and 1990 cm-1 are proposed to be associated with the Ru3(CO)12/NaY, which are close to Ru3(CO)12 crystalline. Furthermore, the Raman results provide bands at 150 and 185 cm-1, which can be attributed to Ru-Ru bonds of the sample as in the case of Ru3(CO)12 crystalline, for which the A1' Ru-Ru stretching mode is assigned to 185 cm-1 and E1' Ru-Ru stretching mode is assigned to a band at 150 cm-1, respectively. CO chemisorption of [Ru3]/NaY gives a CO/Ru ratio of 3.85, which is similar to the stoichiometry of Ru3(CO)12.

关键词： Cluster ruthenium carbonyl NaY zeolite infrared Raman CO chemisorption.

Effect of Direct Ageing Treatment on Stress-Rupture Properties of GH761 Alloy

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Journal of Iron and Steel Research International 2008年第3期15卷 61-64页

作者： YANG Shu-lin SUN Wen-ru LIU Fang GUO shou-ren YANG Hong-cai HU Zhuang-qi School of Materials and Metallurgy Northeastern University Shenyang 110004 Liaoning China Institute of Metal Research Chinese Academy of Sciences Shenyang 110016 Liaoning China

The effect of direct ageing treatment on microstructure and stress-rupture properties of GH761 alloy was studied. Phosphorus was added to the tested alloy for its beneficial effect on stress-rupture life. It was found that the grain size of the tested alloy became much finer after direct ageing treatment, in comparison with the commercial GH761 alloy under standard heat treatment condition. The optimum direct ageing treatment has been determined as follows： 830 ℃ × 4 h, air cooling＋ 720 ℃ × 24 h, air cooling. After such treatment, the higher stress-rupture prop- erties of the test alloy at 650 ℃, 690 MPa were obtained. The role of phosphorus is still effective under the condition of direct ageing treatment.

关键词： direct ageing treatment GH761 mechanical property precipitate

FOSSIL PLANTS FROM EARLY CRETACEOUS DAMOGUAIHE FORMATION IN WUJIU COAL BASIN, HAILAR, INNER MONGOLIA

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古生物学报 1989年第5期 638-641页

作者： ren shou-qin (Beijing University of Iron-Steel Technology) Chen Fen (China University of Geology Beijing).

The Wujiu Coal Basin is situated in the Hulun Buir League of northeastern Inner Mongolia, near the Hailar City In this region the Damoguaihe Formation is a continental facies intercalated with coal-bearing rocks from which fossil plants and Estheria were derived. The fossil plants are composed of such species as Foliosites formosus ren(gen et sp. nov ), Equisetites hulunensis ren (sp. nov.). Coniopteris vachrameevii Vassilevskaja, Sphenopteris sp., Nilssonia grossinervis Prynada, Ginkgo paradiantoides Samylina Schizolepis. pterygoideus ren (sp. nov), Pityostrobus sp. 1, P. sp2, and Carpolithus of. rotundatus (Fontaine) Zheng et Zhang. Judging from the species Coniopteris

关键词：登记号 HW FOSSIL PLANTS FROM EARLY CRETACEOUS DAMOGUAIHE FORMATION IN WUJIU COAL BASIN HAILAR INNER MONGOLIA 大磨拐河组羽叶海拉尔煤盆地

Wear conditions of Al2O3-TiC/Al2O3-TiC-CaF2laminated ceramic drawing dieused for 45#steeldrawing process

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Wear conditions of Al2O3-TiC/Al2O3-TiC-CaF2laminated ceramic...

Using Nuclear Magnetic Resonance and MS/MS Spectroscopy for the Identification of Brodimoprim Metabolites in Rat Urine

第八届中国功能材料及其应用学术会议

作者： SONG Pei-long YANG Xue-feng WANG shou-ren YANG Li-ying School of Mechanical Engineering University of Ji’nan

ISBN: (纸本)9783037859698

AlO-TiC/AlO-TiC-CaF laminated ceramic drawing die used for drawing experiment was prepared by vacuum hot pressing *** finite element models of 45# steel and wire drawing die were built by SolidWorks and simulation analysis of drawing process were done by FEM simulation *** axial stress,strain distribution and drawing force during deformation were *** microstructure of the worn drawing die was observed by scanning electron microscopy(SEM) and the composition was investigated by energy dispersive X-Ray spectroscopy(EDS).Results show that the wear conditions of AlO-TiC-CaF material layers were serious than *** because of the ’dragging effect’,solid lubricating films formed in AlO-TiC-CaF material layers covered on AlO-TiC material *** drawing die owes self lubricating *** considering friction effective on invariable zone of the drawing die,the simulation result of drawing force was smaller than the measurement value.

关键词： Drawing progress Drawing force Finite element analysis Laminated ceramic drawing die Wear

来源： cnki会议评论

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Chinese Chemical Letters 2001年第6期12卷 513-516页

作者： Chun YANG Wen Yi HE Li Jun LI Rui Ming XU shou ren ZHANG Zeper ABLIZ Yi Kang SI Institute of Materia Medica Chinese Academy of Medical Sciences and Peking Union Medical CollegeBeijing 100050

Eight metabolites of brodimoprim (BDP) in rat urine were detected by NMR and ESIMS/MS. They were demethyl-BDP glucuronide, demethyl-BDP sulfurate, demethyl-BDP glucuronide sulfurate, alpha -hydroxyl-BDP, alpha -hydroxyl-BDP glucuronide, BDP sulfurate, N-oxide-BDP sulfurate, and alpha -hydroxyl-N-oxide-BDP sulfurate. All the sulfurates are reported for the first time.

关键词： Nuclear magnetic resonance spectroscopy MS/MS spectroscopy metabolites brodimoprim

DFT Study on Intermolecular Cleavage Reaction of N-(2-Hydroxyphenyl)-phthalamic Acid

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Chemical Research in Chinese Universities 2008年第6期24卷 790-792页

作者： ZHAO Chu-feng TANG Ming-sheng WANG Hong-ming WEI Dong-hui ZHAO Jing ZHANG shou-ren CAO Shu-xia Department of Chemistry Zhengzhou University Zhengzhou 450052 P. R. China

The reaction mechanisms of intermolecular cleavage reaction of N-（2-hydroxyphenyl）-phthalamic acid were studied via the density functional theory（DFT）. All geometries of the reactant, transition states, and products were optimized at the B3LYP/6-31G（d, p） level. Vibration analysis was carried out to confirm its identity as transitions＇ structure, and the intrinsic reaction coordinate method（IRC） was used to search the minimum energy path. Two possible reaction channels are reported in this article. The calculated results indicate that O-cyclization reaction channel has the lower activation barrier, and therefore, it occurs more easier than the other.

关键词： Intermolecular decomposition reaction Density functional theory(DFT) O-Cyclization N-Cyclization N-(2-Hydroxyphenyl)-phthalamic acid

Establishment of an Iron Deficiency Model by Iron Depletion in Pregnant Rats

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Biomedical and Environmental Sciences 2024年第2期37卷 210-215页

作者： CHEN Xi HAN Chao ZHAO Jin Peng SHEN Shi WANG Li Yuan ren shou WANG Tong Lei MA Yan XU Ze Chao HUO Jun Sheng Key Laboratory of Trace Element Nutrition National Health Commission of the People’s Republic of ChinaNational Institute for Nutrition and HealthChinese Center for Disease Control and PreventionBeijing 100050China

Anemia,a global public health problem,has significant adverse consequences on the cognitive development of children and the work capacity of adults;affecting social and economic ***,roughly 43%of children under five years of age,38%of pregnant women,and 29%of nonpregnant women had *** during pregnancy significantly increases the risk of low birth weight and preterm birth.A 10 g/L increase in hemoglobin has been estimated to decrease the risk of maternal and perinatal mortality by 29%and 28%.

关键词： mortality pregnancy anemia

Vagus effect on pylorus preserving gastrectomy

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World Journal of Gastroenterology 1999年第2期5卷 89-90页

作者： LU Yun Fu, ZHAO Ge, GUO Cui Ying, JIA shou ren and HOU Yi Ding

ＩＮＴＲＯＤＵＣＴＩＯＮＭａｋｉａｎｄｏｔｈｅｒｓｒｅｐｏｒｔｅｄｉｎ１９６７ｔｈｅｓｔｕｄｙｏｆａｐｙｌｏｒｕｓｐｒｅｓｅｒｖｉｎｇｇａｓｔｒｅｃｔｏｍｙ（ＰＰＧ）［１］．Ｉｔｓｕｃｃｅｓｆｕｌｙｐｒｅｖｅｎｔｅ... 详细信息

ＩＮＴＲＯＤＵＣＴＩＯＮＭａｋｉａｎｄｏｔｈｅｒｓｒｅｐｏｒｔｅｄｉｎ１９６７ｔｈｅｓｔｕｄｙｏｆａｐｙｌｏｒｕｓｐｒｅｓｅｒｖｉｎｇｇａｓｔｒｅｃｔｏｍｙ（ＰＰＧ）［１］．Ｉｔｓｕｃｃｅｓｆｕｌｙｐｒｅｖｅｎｔｅｄｄｕｍｐｉｎｇｓｙｎｄｒｏｍｅａ...

关键词： vagus pylorus gastrectomy gastric emptying

小波包变换广义回归神经网络分光光度法同时测定铜铅锌

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冶金分析 2007年第10期27卷 6-10页

作者：高玲任守信内蒙古大学化学化工学院内蒙古大学化学化工学院内蒙古呼和浩特010021

本文建立了一种小波包变换广义回归神经网络(WPTGRNN)方法,同时测定Cu(Ⅱ),Pb(Ⅱ)和Zn(Ⅱ)。该法结合小波包变换(WPT)和广义回归神经网络(GRNN)改进除噪质量和预测能力。信号的小波包描述可提供信号的局部时间和空间信息,从而提高了信... 详细信息

本文建立了一种小波包变换广义回归神经网络(WPTGRNN)方法,同时测定Cu(Ⅱ),Pb(Ⅱ)和Zn(Ⅱ)。该法结合小波包变换(WPT)和广义回归神经网络(GRNN)改进除噪质量和预测能力。信号的小波包描述可提供信号的局部时间和空间信息,从而提高了信号和噪音之间的分离能力。除噪质量还可经最好基原理和阈值操作得到进一步改进。广义回归神经网络能克服反传训练所面临的收敛问题及促进非线性计算。通过最佳化,选择了小波函数、小波包分解水平及GRNN的平滑因子,偏最小二乘法(PLS)用于比较研究。编制了3个程序(PWPTGRNN,PGRNN和PPLS)进行相关计算,所有组分的预测标准误差(SEP)和相对预测标准误差(RSEP)分别为8.0×10-7mol/L和5.5%,WPTGRNN法是成功的且优于GRNN及PLS方法。

关键词：小波包变换广义回归神经网络 Cu(Ⅱ) Pb(Ⅱ) Zn(Ⅱ)