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| 1 | Hot compression deformation behavior of the Mg-Al-Y-Zn magnesium alloy显示文摘Mg-Al-Y- Zn 镁合金的热变丑行为被在从 523 ~ 673 K ,紧张率从 0.001 ~ 1 s 变化的温度的在一个 Gleeble-1500 热模拟器上的热压缩测试调查 ? 1。在流动应力,紧张率,和变丑温度之中的关系被分析,并且变丑激活精力和压力代表是计算的。在不同条件下面的合金的微观结构进化被检验。结果显示流动压力的最大的价值与变丑温度的减少或紧张率的增加增加了。在现在的变丑条件下面,动态再结晶(DRX ) 发生在合金,它在在提高的温度的变丑期间是主要弄软机制。变丑温度和紧张在合金的微观结构上有重要效果。 | FANG Xiya YI Danqing WANG Bin WU Chunping ZHANG Hong | 2008 | Rare Metals2008,27,2: | 10 |
| 2 | A discussion on the upper limit of maturity for gas generation by marine kerogens and the utmost of gas generative potential:Taking the study on the Tarim Basin as an example显示文摘The experimental data yielded by Rock-Eval pyrolysis, kerogen atomic H/C, Py-GC and gold-tube sealing thermal simulation on the marine Cambrian-Ordovician source rock from the Tarim Basin revealed that the upper limit of maturity for natural gas generation or the 'deadline of gas generation' for marine types I and II kerogens is equal to 3.0% of vitrinite reflectance (Ro); while the 'deadline of gas generation' for type III kerogens typically like coals is as high as 10% Ro. Thus, different organic matter has obviously different utmost maturities for gas generation. The mass-balance calculation by kerogen elements showed that when Ro>1.5%, the utmost amount of gas generation for the marine type II kerogen is less than 185 m3/t TOC, accounting for less than 30% of its total hydrocarbon generative potential; when Ro>2.0%, it becomes 110 m3/t TOC, less than 20% of the total hydrocarbon generative potential. The amount of the gas generative potential obtained by Rock-Eval is only around one tenth of the calculated value by the mass balance of kerogen elements at the same thermal evolutionary stage, while those by Py-GC and gold-tube sealing simulation are intervenient between the above two. The utmost of gas generative potential at the over 1.3% Ro stage is around 60―90 m3/t TOC, therefore, the amount of gas generation obtained by Rock-Eval is the minimum of gas generative potential, while that by the mass-balance calculation of kerogen elements is the maximum that the actual amount of gas generation should not exceed. | CHEN JianPing ZHAO WenZhi XIAO ZhongYao ZHANG ShuiChang DENG ChunPing SUN YongGe WANG ZhaoMing | 2007 | Chinese Science Bulletin2007,52,A01: | 8 |
| 3 | Recent developments in electrocatalysts and future prospects for oxygen reduction reaction in polymer electrolyte membrane fuel cells显示文摘The main difficulty in the extensive commercial use of polymer electrolyte membrane fuel cells(PEMFCs)is the use of noble metals such as Pt-based electrocatalyst at the cathode, which is essential to ease the oxygen reduction reaction(ORR) in fuel cells(FCs). To eliminate the high loading of Pt-based electrocatalysts to minimize the cost, extensive study has been carried out over the previous decades on the non-noble metal catalysts. Development in enhancing the ORR performance of FCs is mainly due to the doped carbon materials, Fe and Co-based electrocatalysts, these materials could be considered as probable substitutes for Pt-based catalysts. But the stability of these non-noble metal electrocatalysts is low and the durability of these metals remains unclear. The three basic reasons of instability are:(i) oxidative occurrence by H_2O_2,(ii) leakage of the metal site and(iii) protonation by probable anion adsorption of the active site. Whereas leakage of the metal site has been almost solved, more work is required to understand and avoid losses from oxidative attack and protonation. The ORR performance such as stability tests are usually run at low current densities and the lifetime is much shorter than desired need. Therefore,improvement in the ORR activity and stability are the key issues of the non-noble metal electrocatalyst.Based on the consequences obtained in this area, numerous future research directions are projected and discussed in this paper. Hence, this review is focused on improvement of stability and durability of the non-noble metal electrocatalyst. | Maryam Kiani Jie Zhang Yan Luo Chunping Jiang Jinlong Fan Gang Wang Jinwei Chen Ruilin Wang | 2018 | Journal of Energy Chemistry2018,27,4: | 7 |
| 4 | Accelerated design and characterization of non-uniform cellular materials via a machine-learning based framework显示文摘Cellular materials,widely found in engineered and nature systems,are highly dependent on their geometric arrangement.A nonuniform arrangement could lead to a significant variation of mechanical properties while bringing challenges in material design.Here,this proof-of-concept study demonstrates a machine-learning based framework with the capability of accelerated characterization and pattern generation.Results showed that the proposed framework is capable of predicting the mechanical response curve of any given geometric pattern within the design domain under appropriate neural network architecture and parameters.Additionally,the framework is capable of generating matching geometric patterns for a targeted response through a databank constructed from our machine learning model.The accuracy of the predictions was verified with finite element simulations and the sources of errors were identified.Overall,our machine-learning based framework can boost the design efficiency of cellular materials at unit level,and open new avenues for the programmability of function at system level. | Chunping Ma Zhiwei Zhang Benjamin Luce Simon Pusateri Binglin Xie Mohammad H.Rafiei Nan Hu | 2020 | npj Computational Materials2020,,1: | 3 |
| 5 | A Mathematical Calculation Model Using Biomarkers to Quantitatively Determine the Relative Source Proportion of Mixed Oils显示文摘从多重来源岩石,和特别地每来源岩石的相对贡献识别混合的油的来源是困难的。当有简历标记的不同集中的二油与对方一起混合时,用不同简历标记的典型的原油和比率的人工的混合实验证明相对贡献变化是非线性的。如果简历标记和一个简单二进制线性方程的比率被用来计算每个结束成员的贡献比例到混合的油,这可以导致一个不正确的结论。有在三的混合模型的结束成员油的混合比例的简历标记比率的变化比在二进制混合模型更复杂。什么时候四或更多的油混合,到混合的油的每结束成员油的贡献比例不能用简历标记比率和一个简单公式被计算。典型的油的人工的混合实验表明在混合的油的简历标记的绝对集中与混合每个结束成员的比例引起一个线性变化。数学推论验证如此的线性变化。一些用到份量上的简历标记的绝对集中或比率的数学计算方法决定在混合的油的每个结束成员的比例从人工的实验并且由理论推理的结果被推出。当混合超过三结束成员时,二个简历标记的比率在二进制混合模型与混合比例作为一条双曲线加重变化,作为在三的混合模型的 hyperboloid,并且作为亢奋的表面。每个结束成员的混合比例能是与这些数学模型一起决定的份量上,用绝对集中和简历标记的比率。数学计算模型比常规人工的混合方法更节俭、方便、精确、可靠。 | CHEN Jianping DENG Chunping SONG Fuqing ZHANG Dajiang | 2007 | Acta Geologica Sinica(English Edition)2007,81,5: | 3 |
| 6 | Formation mechanism of condensates, waxy and heavy oils in the southern margin of Junggar Basin, NW China显示文摘It is a challenge to determine the source and genetic relationship of condensate, waxy and heavy oils in one given complicated petroliferous area, where developed multiple sets of source rocks with different maturity and various chemical features.The central part of southern margin of Junggar Basin, NW China is such an example where there are condensates, light oils, normal density oils, heavy crude oils and natural gases. The formation mechanism of condensates has been seriously debated for long time;however, no study has integrated it with genetic types of waxy and heavy oils. Taking the central part of southern margin of Junggar Basin as a case, this study employs geological and geochemical methods to determine the formation mechanism of condensates,waxy and heavy oils in a complicated petroliferous area, and reveals the causes and geochemical processes of the co-occurrence of different types of crude oils in this region. Based on detailed geochemical analyses of more than 40 normal crude oils, light oils,condensates and heavy oils, it is found that the condensates are dominated by low carbon number n-alkanes and enriched in light naphthenics and aromatic hydrocarbons. Heptane values of these condensates range from 19% to 21%, isoheptane values from1.9 to 2.1, and toluene/n-heptane ratios from 1.5 to 2.0. The distribution of n-alkanes in the condensates presents a mirror image with high density waxy crude oils and heavy oils. Combined with the oil and gas-source correlations of the crude oils, condensates and natural gas, it is found that the condensates are product of evaporative fractionation and/or phase-controlled fractionation of reservoir crude oils which were derived from mature Cretaceous lacustrine source rocks in the relatively early stage. The waxy oils are the intermediate products of evaporative fractionation and/or phase-controlled fractionation of reservoir crude oils, while the heavy oils are in-situ residuals. Therefore, evaporative fractionation and/or phase-controlled fractionation would account for the formation of the condensate, light oil, waxy oil and heavy oil in the central part of southern margin of Junggar Basin, resulting in a great change of the content in terms of light alkanes, naphthenics and aromatics in condensates, followed by great uncertainties of toluene/n-heptane ratios due to migration and re-accumulation. The results suggest that the origin of the condensate cannot be simply concluded by its ratios of toluene/n-heptane and n-heptane/methylcyclohexane on the Thompson's cross-plot, it should be comprehensively determined by the aspects of geological background, thermal history of source rocks and petroleum generation,physical and chemical features of various crude oils and natural gas, vertical and lateral distribution of various crude oils in the study area. | CHEN JianPing DENG ChunPing WANG XuLong NI YunYan SUN YongGe ZHAO Zhe LIAO JianDe WANG PeiRong ZHANG DiJia LIANG DiGang | 2017 | Science China Earth Sciences2017,60,5: | 3 |
| 7 | Decoding and calibration method on focused plenoptic camera显示文摘The ability of light gathering of plenoptic camera opens up new opportunities for a wide range of computer vision applications. An efficient and accurate method to calibrate plenoptic camera is crucial for its development. This paper describes a 10-intrinsic-parameter model for focused plenoptic camera with misalignment. By exploiting the relationship between the raw image features and the depth–scale information in the scene, we propose to estimate the intrinsic parameters from raw images directly,with a parallel biplanar board which provides depth prior. The proposed method enables an accurate decoding of light field on both angular and positional information, and guarantees a unique solution for the 10 intrinsic parameters in geometry. Experiments on both simulation and real scene data validate the performance of the proposed calibration method. | Chunping Zhang Zhe Ji Qing Wang | 2016 | Computational Visual Media2016,2,1: | 3 |
| 8 | Linking plant spatial aggregation with reproductive traits and near-source seed dispersal: ecological adaptation to heavy grazing显示文摘植物的生态适应策略一直备受生态学者的关注,然而很少有研究能够整体地、系统地揭示植物适应草食动物的生态过程。本研究以内蒙古荒漠草原建群种短花针茅为研究对象,分析了重度放牧和不放牧处理下短花针茅的繁殖个体性状、种子性状以及土壤种子库和种群空间格局。研究结果表明,生殖个体性状方面,生殖枝数量对营养枝数量有正向影响;土壤种子库方面,短花针茅生殖个体基部的土壤种子库中短花针茅密度显著高于旁边裸地土壤种子库中短花针茅的密度,且与种子性状和裸地土壤种子库显著负相关;在种群空间格局方面,重度放牧下短花针茅种群空间聚集分布。我们的结果认为在重度放牧处理下,生殖活动在短花针茅的资源分配中处于主导地位;短花针茅植物种群通过调控种子形态特征,采用就近扩散的生态策略,促进了幼年种群与成年种群在较小的尺度上空间正关联,从而形成“安全岛”。 | Wenting Liu Shixian Sun Chunping Zhang Shijie Lv Quanmin Dong | 2020 | Journal of Plant Ecology2020,13,4: | 2 |
| 9 | Characterization of Iron Grains near the P/T Boundary in the Meishan Section of China显示文摘The Meishan section of China has been confirmed as the “Global Stratotype Section and Point” of the P/T boundary. In the section, the authors found several types of iron grains, including pyrite, pure iron grains and goethite. From the research of macro minerals, it is easy to find that the grains rich in iron appear from the bottom of the event layer of the section. In other words, it is probably residue of the geochemical catastrophe of that time. Therefore, it is important to trace the source of these iron grains and their relationships, which probably provides evidence for volcanic eruption or impact-volcanoes and has directive significance to the crisis during the P/T transitional period. Through the study of the characterization and relationships of these iron grains, the authors make a preliminary discussion on the P/T mass extinction. | CAI Hou'an LIANG Handong ZHANG Jun LUO Chunping | 2006 | Acta Geologica Sinica(English Edition)2006,80,1: | 2 |
| 10 | APPLICATIONS OF THE BERNSTEIN-DURRMEYER OPERATORS IN ESTIMATING THE NORM OF MERCER KERNEL MATRICES显示文摘The paper is related to the norm estimate of Mercer kernel matrices. The lower and upper bound estimates of Rayleigh entropy numbers for some Mercer kernel matrices on [0,1]×[0,1] based on the Bernstein-Durrmeyer operator kernel are obtained, with which and the approximation property of the Bernstein-Durrmeyer operator the lower and upper bounds of the Rayleigh entropy number and the l2-norm for general Mercer kernel matrices on [0,1]×[0,1] are provided. | Chunping Zhang Baohuai Sheng Zhixiang Chen | 2008 | Analysis in Theory and Applications2008,24,1: | 2 |
| 11 | A Simple and Eflfective Method Measuring Thermooptic Coefficient of Materials显示文摘A new method derived from the Z-scan by M.Sheik-baJiae et al.was employed to measure the thermooptic coefficient of materials effectively.A simple rule to determine the sign and magnitude of thermooptic coefficient and laser beam waist radius was obtained. | TIAN Jianguo ZHANG Chunping ZHANG Guangyin | 1991 | Chinese Physics Letters1991,8,12: | 2 |
| 12 | Hepatic Stellate Cell Coculture Enables Sorafenib Resistance in Huh7 Cells through HGF/c-Met/Akt and Jak2/Stat3 Pathways显示文摘 | Weibo Chen Junhua Wu Hua Shi Zhongxia Wang Guang Zhang Yin Cao Chunping Jiang Yitao Ding Jian Zhou | 2014 | BioMed Research International2014,,: | 2 |
| 13 | AN APPLICATION OF BERNSTEIN-DURRMEYER OPERATORS显示文摘在现在的论文,我们发现除他们在近似理论和一些另外的领域的更好的应用程序以外, Bernstein-Durrmeyer 操作符是在构造翻译网络的好工具。在 Bernstein-Durrmeyer 操作员的 de la Vall 茅 e 性质的帮助下,翻译网络操作员的一个序列被构造,它近似的度被发。关键词 Bernstein-Durrmeyer 操作员 - 翻译网络 - 近似 AMS (2000 ) 使分类 41A25 遭到 - P.R.China (10471130 ) 的 NSF 支持的 43A90,和浙江省(Y604003 ) 的 NSF。 | Baohuai Sheng Chunping Zhang | 2007 | Analysis in Theory and Applications2007,23,1: | 2 |
| 14 | Expression of Potential Cancer Stem Cell Marker ABCG2 is Associated with Malignant Behaviors of Hepatocellular Carcinoma显示文摘 | Guang Zhang Zhongxia Wang Weihuan Luo Hongbo Jiao Junhua Wu Chunping Jiang Qiang Xia | 2013 | Gastroenterology Research and Practice2013,,: | 1 |
| 15 | Accuracy of the diffusion approximation for total time resolved reflectance from a semi-infinite turbid medium显示文摘 | Xu Tang Zhang Chunping Wang Xinyu | 2003 | Optic-International Journal for Light and Electron Optics2003,114,6: | 1 |
| 16 | Differences and determinants in access to essential public health services in China: a case study with hypertension people and under-sixes as target population显示文摘 | Niu Hongli Tian Miaomiao Ma Anning Wang Chunping Zhang Liang | 2014 | Chinese Medical Journal2014,,9: | 1 |
| 17 | γδ T cells recognize tumor cells via CDR3δ region显示文摘 | Chunping Xu Huiyuan Zhang Hongbo Hu Hongbin He Zhun Wang Yong Xu Hui Chen Wei Cao Sumei Zhang Lianxian Cui Denian Ba Wei He | 2006 | Molecular Immunology2006,,4: | 1 |
| 18 | Optimization of parameters in long fiber reiniorced reaction injection molding on bending properties 显示文摘 | CHEN Feng CAO Chunping ZHANG Wei | 2011 | Adv Mater Res2011,,: | 1 |
| 19 | Puerarin blocks the signaling transmission mediated by P2X 3 in SG and DRG to relieve myocardial ischemic damage显示文摘 | Shuangmei Liu Chunping Zhang Qingming Shi Guilin Li Miaomiao Song Yun Gao Changshui Xu Hong Xu Bo Fan Shicheng Yu Chaoran Zheng Qicheng Zhu Bing Wu Lichao Peng Huangui Xiong Qin Wu Shangdong Liang | 2014 | Brain Research Bulletin2014,,: | 1 |
| 20 | Gammadelta T cells recognize tumor cells via CDR3deha region 显示文摘 | Xu Chunping Zhang Huiyuan Hu Hongbo | 2007 | Mol Immunol2007,44,4: | 1 |