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308篇 您的检索式:作者名="R. Lin"
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1The Y.D.and climate abrupt events in the early and middle Holocene:Stalagmite oxygen isotope record from Maolan,Guizhou,China显示文摘The isotope records which range from 3.9 kaBP to 15.7 kaBP with an average resolution of 90 a have been obtained from 45 cm to 193.6 cm of the upper part of D4 stalagmite from Dongguo Cave in Libo, Guizhou, by using system TIMS U-series dating and carbon and oxygen stable isotope analyses.The study indicates that the last cold event, the YD (Younger Dryas) event, of the last glacial period was apparently shown in D4 record, which started from 12.80 kaBP and ended in 11.58 kaBP, with a great range of drop in temperature. The end of the last glacial period was consistent with the termination I in oceanic isotope records and was with time limit of 11.3 kaBP. The three most distinct cold events in the early and middle Holocene occurred respectively in 10.91 kaBP, 8.27 kaBP and 4.75 kaBP, with a range of drop in tem- perature reaching 2—5℃. The climate abrupt events in thousand and hundred years scale re- corded in stalagmite δ O can be compared to those in GISP2 ice cores from Greenland in their 18 happening time and the range of their lasting time. The cold events in 8.27 kaBP and 4.75 kaBP can also be compared to CC3 stalagmite records in Ireland, which indicate that climate changes of short range in China monsoon areas, western Europe and polar regions, have the same driv- ing factor. This has a global significance. In addition, the trend of record curves in some time- stages is apparently different, which reflects probably the difference between environment in monsoon climate areas and in polar regions.QIN Jiaming1, YUAN Daoxian1, CHENG Hai2, LIN Yushi1, ZHANG Meiliang1, WANG Fuxing1, R. L. Edwards2, WANG Hua1 & RAN Jingcheng3 1. The Karst Dynamic Laboratory, IKG, CAGS, Guilin 541004, China 2. Geology and Geophysics Department, Minnesota University, MN55455, USA 3. The Management of Maolan National Nature Reserve, Libo 558400, China 2005Science China Earth Sciences2005,48,4:23
2Cold adaptation in pigs depends on UCP3 in beige adipocytes显示文摘Jun Lin Chunwei Cao Cong Tao Rongcai Ye Meng Dong Qiantao Zheng Chao Wang Xiaoxiao Jiang Guosong Qin Changguo Yan Kui Li John R. Speakman Yanfang Wang Wanzhu Jin Jianguo Zhao 2017Journal of Molecular Cell Biology2017,9,5:20
3Proteomic changes in mammalian spermatozoa during epididymal maturation显示文摘附睾成熟与 cAMP-inducedtyrosine 磷酸化串联的激活被联系,它最终与表达式被联系 ofcapacitation 依赖的精子工作,例如亢奋的激活的运动和 acrosomal exocytosis。通过附睾的 Asspermatozoa 进步他们首先在主要的片上在目标上获得能力到 phosphorylatetyrosine,由中间的片列在后面。等到这些房间 haver eached 附睾尾他们装 phosphorylate 从颈的全部尾巴到结束片。磷酸化的 Thisparticular 模式与能够使肥沃的充分功能的精子的个体发生被联系卵母细胞。这改变的 Proteomic 分析 indicate 与几 mitochondrial 蛋白质的磷酸化被联系, amitochondrial 膜电位的创造和 mitochondrial 自由基产生的激活。至少在啮齿类动物种类,精子线粒体的激活看起来是特别地重要的部分 ofepididymal 成熟。R. John Aitken Brett Nixon Minjie Lin Adam J. Koppers Yun H. Lee Mark A. Baker 2007Asian Journal of Andrology2007,9,4:14
4New Families in the Stable Homotopy of Spheres RevisitedLIN Jin Kun Department of Mathematics. Nankai University. Tianjin 300071. P. R. China 2002Acta Mathematica Sinica,English Series2002,18,1:12
5Ecological Planning for Sino-Singapore Ecological Science and Technology Town of Suzhou显示文摘1. Background The construction of Sino-Singapore Ecological Science and Technology Town (SSESTT), which is a part of Suzhou Industrial Park, was initiated in 2005 under the circumstance of rapidLIN Borong, Associate Professor, School of Architecture, Tsinghua University, Beijing, P. R. China. QIN Youguo, Professor, School of Architecture, Tsinghua University, Beijing, P. R. China. LIU Ligang, PhD Candidate, School of Architecture, Tsinghua University, Beijing, P. R. China. SONG Yehao, Associate Professor, School of Architecture, Tsinghua University, Beijing, P. R. China. 2008China City Planning Review2008,17,4:12
6One-step hydrothermal synthesis of hierarchical Ag/Bi_2WO_6 composites: In situ growth monitoring and photocatalytic activity studies显示文摘Hierarchical Ag/Bi2WO6 nanomaterials were prepared by a facile one-step hydrothermal method in mixed acetic acid and ethylene glycol (EG) medium. EG is employed as mild reducing agent for the formation of metallic Ag from Ag+ precursors. In situ energy dispersive X-ray diffraction (EDXRD) monitoring showed that the hydrothermal formation kinetics of Bi2WO6 in the presence of EG was significantly slowed down due to its very high viscosity. The photocatalytic activities of Ag/Bi2WO6 composites were evaluated by the photodegradation of methylene blue (MB) under visible light irradiation. The photocatalytic activity of Bi2WO6 is strongly influenced by the Ag loading. The enhanced catalytic activity of the composites is based on the cooperative effects of plasmon absorption band and separation of photogenerated electron-hole pairs.ZHOU Ying ZHANG Qian LIN YuanHua ANTONOVA Elena BENSCH Wolfgang PATZKE Greta R. 2013Science China Chemistry2013,56,4:11
7Fenton Reagent Generated in Electrolysis Cell and Its Usage in Degradation and Decolorization of Dyes显示文摘The Electro-chemistry process to produce Fenton reagents has been described. The in situ oxidation of dyes, acid chrome and alizarin red(Fenton reagents) with electrogenerated hydroxyl radicals was investigated. The \{ I-V \} cyclic voltammograms were measured. The redox peaks of the dyes were not observed in the treated dye solutions instead of a couple of O2/H2O2 redox peaks. The IR results indicate that acid chrome dye was decomposed into naphthylamine and phenol aminophenol sulfonic acid. The degradation and the decolorization of the dyes were comfirmed by the visible spectrum and the chemical analysis. The COD cr removing rate was close to 80%.CHEN Zhen ** , ZHENG Xi, CHEN Ri-yao, LAN Rui-fang, LIN Zhi-hong and CHEN Yu-feng Experiment Center, Fujian Normal University, Fuzhou 350007, P. R. ChinaZHANG Yi-kangLinyi Normal College, Linyi 276001, P. R. China 2002Chemical Research in Chinese Universities2002,18,1:8
8Design optimization of cast Cu-Al-Be-B alloys for high damping capacity显示文摘This paper investigated high-damping Cu-Al-Be-B cast alloys using metallographic analysis, X-ray diffraction (XRD) and electrical resistance measurements for transformation temperatures. The results showed that beryllium can stabilize β phase, resulting in a thermo-elastic martensite microstructure leading to high-damping capacity in cast Cu-Al-Be-B alloys. Trace additions of boron to Cu-Al-Be alloys can significantly refine the grains, providing high strength and ductility to the alloys. A factorial design of experiment method was used to optimize the composition and properties of cast Cu-Al-Be-B alloys. The optimal microstructure for thermo-elastic martensite can be obtained by adjusting the amounts of aluminum and beryllium to eutectoid or pseudo-eutectoid compositions. An optimized cast Cu-Al-Be-B alloy was developed to provide excellent mechanical properties, tensile strength σ_b=767MPa, elongation δ=7.62%, and damping capacity S. D. C=18.70%.~*S. Lu~(1,2), W. H. Miao~1, J. Chen~1, P. H. Lin~2 (1. Department of Materials Engineering, East China Ship Building Institute of Technology, Zhenjiang 212003, Jiangsu, P. R. Chine 2. Department of Mechanical Engineering, Southeast University, Nonjing 210096, Jiangsu, P. R. Chine) 2004China Foundry2004,1,S1:8
9Characterising the Accuracy of Multivariable Refinable Functions via the Symbol FunctionQiu Hui SHENG School of Mathematics and Computer Science. Hubei University, Wuhan. 430062. P. R. China Institute of Mathematics. Academy of Mathematics and Systems Science. Academia Sinica. Beijing 100080. P. R. China Han Lin CHEN Institute of Mathematics, Academia Sinica, Beijing 100080, P. R. China 2001Acta Mathematica Sinica,English Series2001,17,2:7
10A Feasibility Study of FES Restoration of Elbow Movementsfor C5/C6 Quadriplegic Patients显示文摘This paper presents a feasibility study of restoration of elbow movements in C5/C6quadriplegic patientS by functional electrical stimulation (FES). A biomechanical model of thebiceps and triceps muscles and elbow joint is developed for computer simulation. A feedbackcontrol method is evaluated in the study for the static and dynamic responses. Results indicate thatit is possible to achieve extension control at the elbow joint with electrical stimulation of extensormuscle. These results may provide a plausible control method for controlling elbow extensionmovements in clinical application.N. Lan J.C. Wang P. Lin and Y. Li(Dept. of Electrical Engineering, Tsinghua UniversityBeijing 100084, P. R. China)(Spinal Cord injury Unit, Charity HospitalChina Rehabilitation Research Center, Beijing 100077, P. R. China) 1998Chinese Journal of Biomedical Engineering(English Edition)1998,7,3:6
11Novel adaptive Hatch filter to mitigate the effects of ionosphere and multipath on LAAS显示文摘It has been proven that carrier smoothing and differential global positioning system (DGPS) are effective to improve the accuracy of pseudorange by reducing the noise in it and eliminating almost all the common mode errors between the ground station and user. However, another issue coming with local area augmentation system (LAAS) is how to find an adaptive smoothing window width to minimize the error on account of ionosphere delay and multipath. Based on the errors analysis in carrier smoothing process, a novel algorithm is formulated to design adaptive Hatch filter whose smoothing window width flexibly varies with the characteristic of ionosphere delay and multipath in the differential carrier smoothing process. By conducting the simulation in LAAS and after compared with traditional Hatch filers, it reveals that not only the accuracy of differential correction, but also the accuracy and the robustness of positioning results are significantly improved by using the designed adaptive Hatch filter.Lin Zhao, Liang Li, Ming Sun, and Xiaoxu Wang College of Automation, Harbin Engineering University, Harbin 150001, P. R. China 2010Journal of Systems Engineering and Electronics2010,21,6:6
12Analysis on Dynamic Heterosis for Allelopathy in Rice Under Different Environment Conditions显示文摘In this study, 5 parental rice varieties with different allelopathic potentials were employed indiallel cross [P(P+ 1)/2] to get a set of genetic materials including parental lines and two generations of F1 s.The dynamic heterosis for allelopathy in rice under different environmental conditions, was analyzed by usingadditive-dominant developmental genetic model. The results indicated that heterosis in both F1 and F2 showedinhibitory effects on shoot and root length of receiver plant (Lactuca sativa L. ). Heterosis over mid-parentbased on population mean(HMP) in F2 was lower than that in differental environmental conditions, showing1/2 HMP in F1. The heterosis in rice allelopathy was much higher under the field environmental conditionswith lower temperature and weaker sunlight than that under favorable environment, implying that the allel-opthic potential could be increased by stress environment. This finding interpreted the genetic reason thatplant could produce more allelochemicals under unfavorable environment.LIN Wen-xiong, DONG Zhang-hang, CHEN Xiang-xu, HE Hua-qin, SHEN Li-hua, GUO Yu-chun, LIANG Yi-yuan, CHEN Fang-yu and LIANG Kang-jing(Fujian Agriculture and Forestry University, Fuzhou 350002 , P. R. China) 2003Agricultural Sciences in China2003,2,7:5
13Regio-and Stereo-selective Reductions of Steroidal 4-en-3,6-dione显示文摘The different regioselective and stereoselective products were obtained by the reduction of stigmast-4,22-dien-3,6-dione with NaBH4-CH3OH when different kinds of metal ions was added to the reaction.CUI Jian-guo 1,2, ZENG Long-mei 1**, SU Jing-yu 1 and LIN Cui-wu 1,3 1. School of Chemistry and Chemical Engineering, Zhongshan University, Guangzhou 510275, P. R. China 2. Department of Chemistry, Guangxi Teachers College, Nanning 530001, P. R. China 3. Department of Chemistry, Guangxi University, Nanning 530001, P. R. China 2002Chemical Research in Chinese Universities2002,18,4:5
14Characteristics of Some Heavy Metals in Acid Sulfate Topsoils, Eastern Australia显示文摘Forty-five acid sulfate topsoil samples (depth < 0.5 m) from 15 soil cores at 11 locations along the New South Wales coast, Australia, were selected to investigate the chemical behavior of Zn, Mn, Cr, Co and Pb in these soils. The amount of HCI-extractable Mn was much smaller than the mean value of the total Mn documented for other soils. This may be attributed to enhanced mobilization of Mn from the soils under the extremely acidic and seasonally flooded conditions encountered in the investigated soils. The pH-dependency of soluble Zn and Mn was strongly affected by the availability of acid reactive Zn and Mn compounds. There were fairly good relationships between soluble Zn and acid reactive Zn compounds, and between soluble Mn and acid reactive Mn compounds. Soluble Zn and soluble Mn concentrations were important controls on exchangeable Zn and Mn concentrations, respectively. In contrast to the suggestion by other authors that adsorption of Co was closely associated with Mn oxides present in soils, the exchangeable Co in the investigated acid sulfate soils was not clearly related to the abundance of Mn minerals. In addition to the fact that there are few Mn minerals present in the soils, this might also be because the availability of canon exchange sites on the crystal surfaces of Mn oxides was reduced under extremely acidic conditions.C. LIN, D. MCCONCHIE, R. T. BUSH, L. A. SULLIVAN and M. ROSICKY (School of Resource Science and Management, Southern Cross University, Lismore, NSW (Australia)) 2001Pedosphere2001,11,1:4
15A high-resolution, absolute-dated Holocene and deglacial Asian monsoon record from Dongge Cave, China显示文摘Carolyn A. Dykoski R. Lawrence Edwards Hai Cheng Daoxian Yuan Yanjun Cai Meiliang Zhang Yushi Lin Jiaming Qing Zhisheng An Justin Revenaugh 2005Earth and Planetary Science Letters2005,,1:3
16A new approach to measure melamine, cyanuric acid, and melamine cyanurate using surface enhanced Raman spectroscopy coupled with gold nanosubstrates显示文摘Lili He Yang Liu Mengshi Lin Joseph Awika David R. Ledoux Hao Li Azlin Mustapha 2008Sensing and Instrumentation for Food Quality and Safety2008,,1:3
17The Lum inescence Properties of M'type of YTaO_4∶Eu显示文摘A series of Eu 3+ doped of Mtype of yttrium orthotantalate Y 1-x Eu x TaO 4( x =0—0.30) was sythesized. The influence of activator concentration on luminescence properties was studied in detail. The strong evidence from excitation spectra, emission spectra and diffusive reflection spectra of this system shows that there is energy transfer from TaO 3- 4 to Eu 3+ via the charge transfer and spectral overlap.LI Bo, GU Zhen nan ** , DONG Yi , LIN Jian hua  and SU Mian zeng  (Chemistry Department, State key Laboratory of Rare Earth Materials Chemistry and Applications , Peking University, Bejing 100871, P. R. China) (Received Dec. 26, 1 1999Chemical Research in Chinese Universities1999,15,3:3
18Effect of Activated Carbon as a Support on Metal Dispersion and Activity ofRuthenium Catalyst for Ammonia Synthesis显示文摘Ten kinds of activated carbon from different raw materials were used as supports to prepare ruthenium catalysts. N2 physisorption and CO chemisorption were carried out to investigate the pore size distribution and the ruthenium dispersion of the catalysts. It was found that the Ru dispersion of the catalyst was closely related to not only the texture of carbon support but also the purity of activated carbon. The activities of a series of the carbon-supported barium-promoted Ru catalysts for ammonia synthesis were measured at 425 ℃, 10 0 MPa and 10 000 h -1. The result shows that the same raw material activated carbon, with a high purity, high surface area, large pore volume and reasonable pore size distribution might disperse ruthenium and promoter sufficiently, which activated carbon as support, could be used to manufacture ruthenium catalyst with a high activity for ammonia synthesis. The different raw material activated carbon as the support would greatly influence the catalytic properties of the ruthenium catalyst for ammonia synthesis. For example, with coconut shell carbon(AC1) as the support, the ammonia concentration in the effluent was 13 17% over 4%Ru-BaO/AC1 catalyst, while with the desulfurized coal carbon(AC10) as the support, that in the effluent was only 1 37% over 4%Ru-BaO/AC10 catalyst.ZHENG Xiao-ling, ZHANG Shu-juan, LIN Jian-xin, XU Jiao-xing, FU Wu-jun and WEI Ke-mei **National Engineering Research Center of Chemical Fertilizer Catalyst, Fuzhou University,Fuzhou 350002, P. R. China 2002Chemical Research in Chinese Universities2002,18,4:3
19Recombinant protein expression in Pichia pastoris显示文摘James M. Cregg Joan Lin Cereghino Jianying Shi David R. Higgins 2000Molecular Biotechnology2000,,1:3
20Recombinant protein expression in Pichia pastoris显示文摘James M. Cregg Joan Lin Cereghino Jianying Shi David R. Higgins 2000Molecular Biotechnology2000,,1:3
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