维普中文期刊产品整合服务
14篇 您的检索式:作者名="Taijin"
    题名 作者 年代 出处 被引量
1Variations in carbon isotopic composition in the subcontinental lithospheric mantle beneath the Yangtze and North China Cratons:Evidence from in-situ analysis of diamonds using SIMS显示文摘The components and evolution of subcontinental lithospheric mantle beneath the North China Craton and the Yangtze Craton is a current topic in the geological study of China and the carbon isotopic composition of diamond is one of the most direct probes into cratonic lithospheric mantle processes.In this paper,in-situ SIMS(Secondary Ion Mass Spectrometry) techniques were used to analyze the carbon isotope compositions at different internal growth zones of diamonds from Shandong and Liaoning in the North China Craton and Hunan in the Yangtze Craton.It was found that the carbon isotopic range of diamonds from the North China Craton are rather distinct from those of the Yangtze Craton;the former has a range of 6.0‰ to 2.0‰(relative to VPDB) with an average value of 3.0‰ in their core areas,which is consistent with global peridotitic diamonds;the diamonds from the Yangtze Craton,however,have a carbon isotopic range from 8.6‰ to 3.0‰ with an average value of 7.4‰ in their core areas,being more consistent with global eclogitic diamonds.The variations of carbon isotope ratios between different internal growth zones in individual diamonds were different in the three diamond localities studied.There was a clear correlation between changes in carbon isotopic composition and phases of diamond dissolution and new growth,while no correlation was observed between δ13C and internal inclusions.The variations suggest that the carbon isotopic compositions of mantle fluids were changing during the process of diamond crystallization,and that the heterogeneity of the carbon isotopic composition in mantle carbon reservoirs was a more important factor than carbon isotope fractionation in controlling the carbon isotopic compositions and their variation in diamonds.In addition,the preliminary results of in-situ nitrogen analyses demonstrated that the variation of carbon isotopic compositions between the core and outer growth zones does not correlate with nitrogen abundances,implying either that diamonds crystallized in an open environment or that the carbon isotopic composition and nitrogen contents in mantle fluids were controlled by other,not yet understood factors.The experimental results provide hints that the isotopic composition of carbon and its original sources were different in metasomatic fluids controlling diamond formation in the mantle beneath the North China Craton and the Yangtze Craton.CHEN Hua QIU ZhiLi LU TaiJin STERN Richard STACHEL Thomas SUN Yuan ZHANG Jian KE Jie PENG ShuYi QIN SheCai 2013Chinese Science Bulletin2013,58,1:7
2在珠宝首饰界准确鉴定宝石的重要性显示文摘在当今珠宝首饰市场上,无论是优化处理的还是合成的宝石材料,其种类和数量都在增加。在某些情况下,它们呈现出与贵重天然宝石极其相似的外观特征。尽管某些经处理的或合成的宝石材料常显示出其独特的宝石学性质,但对于珠宝商,尤其是对那些缺乏宝石学专业培训或刚刚入门使用常规宝石鉴定方法或设备的珠宝商,鉴定起来十分困难。因此,到专业宝石鉴定实验室去鉴定宝石样品就显得非常必要。在专业实验室中,先进的科学仪器必须由受过培训的专业人员操作。宝石的准确鉴定对维护天然宝石的商业价值及消费者的信心都至关重要。目前大多数宝石学研究的目的是给珠宝首饰商及宝石学家提供可操作的宝石鉴定手段,以有助于确保国际宝石市场的完整性。介绍了几种优化处理及合成宝石材料的鉴定实例,这些材料对当今的宝石鉴定提出了挑战。James E.Shigley Taijin Lu Wuyi Wang 张辉 2004宝石和宝石学杂志2004,6,2:7
3Hydrolyzed seawater pearl tablet modulates the immunity via attenuating Th1/Th2 imbalance in an immunosuppressed mouse model显示文摘OBJECTIVE: To investigate whether Hydrolyzed Seawater Pearl tablet(HSPT) could modulate the Th1/Th2 imbalance in an immunosuppressed mouse model with Th1 to Th2 shift induced by Cyclosporine A(Cs A) which can be used in the clinical treatment of Th2 to Th1 shift diseases, and explore the possible mechanism for the adjuvant therapeutic efficacy of HSPT on recurrent respiratory infections(RRI) and acquired immune deficiency syndrome(AIDS).METHODS: The mice were randomly divided into six groups of five animals each, namely normal group, model group, lentinan polysaccharide tablet(LPT) group and three HPST treated groups. HPST treated groups were administered with HPST(0.51,1.02, 2.04 g/kg) via intragastric gavage(i.g) for 30 consecutive days. LPT used as reference drug for positive control, LPT group was administered with LPT(8.2 mg/kg) for 30 consecutive days. Normal group and model group were received distilled water. The animals in model group, LPT group and HPST treated groups were injected intraperitoneally with Cs A(50 mg/kg) to establish the immunosuppressed mice model with Th1 to Th2 shift on the20 th, 22 nd and 24 th day, one hour after the administration of the respective treatment. Animals were sacrificed one hour after the last administration to collect blood and splenic tissue. The proportion of T cells including CD8+ and CD4+ T cells, Th1 and Th2 in peripheral blood of experimental mice were measured by flow cytometric. The protein level in serum and m RNA level in splenic tissue of experimental mice for interleukin(IL)-2, IL-12, interferon-γ(IFN-γ), IL-4, IL-6, IL-10 and IL-13 were measured by enzyme linked immunosorbent assay and fluorescence quantitative polymerase chain reaction respectively.RESULTS: HSPT elevated the proportion of T cells including both CD8+ and CD4+ T cells, in which the proportion of Th1 and Th2 cells increased, while the ratio of Th1/Th2 cells decreased in peripheral blood of the immunosuppressed mouse model with Th1 to Th2 shift induced by Cs A. Furthermore,HSPT elevated both protein and m RNA level of Th1-type cytokines IL-2 and IFN-γ, while had no significant effect on protein and m RNA level of Th1-type cytokine IL-12 and Th2-type cytokines IL-4, IL-6, IL-10, IL-13 in mouse model.CONCLUSION: Our findings suggest that HSPT can increase proportion of T cells including both CD8+and CD4+T cells and induce Th2 to Th1 shift in both cells and cytokines, which probably was the mechanism to account for the adjuvant therapeutic efficacy of HSPT on RRI and AIDS.LAN Taijin LUO Xuefei MO Mingyue CHEN Zhenxing LUO Fei HAN Siyin LIU Peng LIANG Zhongxiu ZHANG Ting LI Tianyi YAN Qiangqiang LIN Yong LIN Jiang 2021Journal of Traditional Chinese Medicine2021,41,3:6
4An efficient quantum immune algorithm to minimize mean flow time for hybrid flow shop problems显示文摘Qun Niu Taijin Zhou Minrui Fei Bing Wang 2012Mathematics and Computers in Simulation2012,,:1
5An efficient quantum immune algorithm to minimize mean flow time for hybrid flow shop problems显示文摘Niu Qun Zhou Taijin Fei Minrui 2012Mathematics and Computers in Simulation2012,84,10:1
6Amber with mineral inclusions 显示文摘Li Haibo Lu Taijin Shen Meidong 2010Gems & Gemology2010,46,4:1
7Sequencial mechanism of methane dehydrogenation over metal(Mo or W) oxide and carbide catalysts显示文摘Taijin Zhou Aimin Liu 2000J Phys Chem:A2000,104,:1
8A quantun-inspired immune algorithm for hybrid Flow-Shop with make span cri- terion 显示文摘NIU Qun ZHOU Taijin /VIA Shiwei 2009Journal of Universal Computer Science2009,15,4:1
9Open channels in near- colourless synthetic moissanite显示文摘Lu Taijin Shigley J E Koivula J I 2002Journal of Gemmology2002,28,3:1
10Spectroscopic Features and Coloration of Gem-Quality Green Tsavorite in Major International Deposits and China显示文摘Tsavorite green colored by Cr3+/V3+ has been traditionally found and mined in Tanzania, Kenya and Madagascar in the Neoproterozoic Mozambique metamorphic belt (NMMB), and recently be found in Sanjiang, Litang, Sichuan, China. The differences of the chemical formula, spectroscopic features, as well as the concentrations of the V2O3 and Cr2O3 in the tsavorite crystals collected from major international deposits and Sanjiang, China have been investigated using EPMA, XRF, UV-VIS spectrometers, FTIR, Raman scattering microscopy, DiamondView TM techniques. It was found that the chemical formulas of African tsavorite and Chinese tsavorite are Ca3(Al,V)2[SiO4]3 and Ca3(Al,Cr)2[SiO4]3, respectively, indicating that tsavorite is a solid solution between dominant grossular and minor goldmanite and uvarovite. Two broad bands centered at 430 nm and 605 nm were the main absorption features in the tsavorite samples, which attribute to the absorption of Cr3+ and/or V3+ ions in the lattice. The green coloration is caused by Cr3+ and/or V3+ ions resulting in the absorption of purple and red components of the visible light. Absorptions caused of Fe3+ and Fe2+ ions could add the bluish color component in some of tsavorite samples. The intensity of green color is proportional to the concentrations of V2O3 and Cr2O3. The basic gemological properties, such as refractive index in the investigated samples were presented, and the definition and chemical and spectroscopic properties of tsavorite are discussed.L Linsu ZHANG Yong LI Hongbo LU Taijin MAO Bing CHEN Hua 2013矿物学报2013,33,S1:0
11Studies on Mixed Trialkyltm Derivatives Ⅶ——Studies of [(Phenyldimethylsilyl)methyl]-dicyclohexyltin Carboxylates显示文摘Seventeen derivatives of mixed trialkyltin carboxylates with the formula (PhMe2SiCH2)Cy2SnO2CR have been synthesised.The results of IR NMR(1H,13C,119Sn) and MS showed that this kind of compounds is four-coordinated and that there are two good linear relationships between the δ 119Sn and Hammett constants of para-substitutent of the corresponding aryloxy-acetates and arylcarboxylates.These compounds have a good acaricidal activity in the preliminary bioassay tests.XIE Qing-lan,SHA Yin-lin and YANG Zhi-qiang (Elemento-organic Chemistry Laboratory,Nankai University,Taijin,300071) 1995Chemical Research in Chinese Universities1995,11,2:0
12Leflunomide: A versatile additive for defect reduction, enhanced optoelectronic properties and environmental stability of perovskite films显示文摘The development of perovskite photoelectric devices with excellent performance is largely dependent on the defects in the perovskite films.To address this issue,a specific drug,leflunomide(LF,C_(12)H_(9)F_(3)N_(2)O_(2)),was incorporated into the perovskite to reduce defects and improve its photoelectric properties.It is believed that the C=O bond on LF molecule can interact with the uncoordinated Pb2+of the perovskite,thereby reducing non-radiative recombination.This novel approach of incorporating LF into perovskite films has the potential to revolutionize the development of high-performance perovskite photoelectric devices.The trifluoromethyl functional(–CF_(3))group on LF can form a protective layer on the surface of the perovskite film,shielding it from water erosion.Moreover,LF can be utilized to alter the nucleation position of perovskite,thus minimizing the number of defects and optimizing the film quality.Consequently,the LF-doped perovskite film displays low trap density and high photoelectric performance.The LF-doped perovskite film showed a trap density of 8.28×10^(11),which is notably lower than the 2.04×10^(12) of the perovskite film without LF.The responsivity and detectivity of the LF-doped perovskite photodetector were 0.771 A/W and 2.81×10^(11) Jones,respectively,which are much higher than the 0.23 A/W and 1.06×10^(10) Jones of the LF-undoped perovskite photodetector.Meanwhile,the LF-doped photodetector maintained an initial photocurrent of 86%after 30 days of storage in air,indicating drastically increased environmental stability.This strongly suggests that LF is an effective additive for perovskites utilized in optoelectronic devices with high performance.Dingyue Sun Ming Peng Taijin Wang Longju Yi Shizuo Zhang Feng Liu Gary J.Cheng 2024Nano Research2024,17,4:0
13A Survey of Vision and Language Related Multi-Modal Task显示文摘With the significant breakthrough in the research of single-modal related deep learning tasks,more and more works begin to focus on multi-modal tasks.Multi-modal tasks usually involve more than one different modalities,and a modality represents a type of behavior or state.Common multi-modal information includes vision,hearing,language,touch,and smell.Vision and language are two of the most common modalities in human daily life,and many typical multi-modal tasks focus on these two modalities,such as visual captioning and visual grounding.In this paper,we conduct in-depth research on typical tasks of vision and language from the perspectives of generation,analysis,and reasoning.First,the analysis and summary with the typical tasks and some pretty classical methods are introduced,which will be generalized from the aspects of different algorithmic concerns,and be further discussed frequently used datasets and metrics.Then,some other variant tasks and cutting-edge tasks are briefly summarized to build a more comprehensive vision and language related multi-modal tasks framework.Finally,we further discuss the development of pre-training related research and make an outlook for future research.We hope this survey can help relevant researchers to understand the latest progress,existing problems,and exploration directions of vision and language multi-modal related tasks,and provide guidance for future research.Lanxiao Wang Wenzhe Hu Heqian Qiu Chao Shang Taijin Zhao Benliu Qiu King Ngi Ngan Hongliang Li 2022CAAI Artificial Intelligence Research2022,1,2:0
14Coal-Forming Model in the Context of Non-marine Sequence Stratigraphy:A Case Study of Jurassic Coal Measures in Northern Qaidam Basin,Northwestern China显示文摘Previous studies of coal sequence stratigraphy have concentrated on coals associated with paralic depositional systems.Little attention has been paid to their counterparts in non-marine intra-mountain coal basins.The northern Qaidam Basin of northwestern China has been extensively developed with abundant oil and gas as well as coal resources in its Jurassic non-marine successions.A total of six sedimentary systems of the Early and Middle JurassicJing Lu~1,Longyi Shao~1,Taijin Liu~2,Qi Ju~2,Huaijun Wen~2,Hao Wang~1 1.Department of Resources and Earth Sciences,China University of Mining and Technology(Beijing),Beijing 100083,China. 2.Qinghai Administration of Coal Geology,Xining 810000,China 2009地学前缘2009,16,S1:0
返回顶部 每页显示:
共1页 首页 上一页 第1页 下一页 末页 /1 跳转

网站首页 | 关于我们 | 联系我们 | 产品服务 | 客服中心 | 广告服务 | 版权声明 | 网站联盟 | 友情链接 | 售卡网点

版权所有© 渝B2-20050021-1 渝公网安备 50019002500403号 违法和不良信息举报中心

互联网出版许可证 新出网证(渝)字10号 全国400电话 - 免长途话费