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| 1 | Structure and coalbed methane occurrence in tectonically deformed coals显示文摘Research on structure of tectonically deformed coals(TDC) is a key issue in coal and gas outburst prevention and coalbed methane(CBM) exploitation.This paper presents a summary on the research progress in TDC's structural-genetic classification,tectonic strain influence on coal microstructure,coal porosity system,coal chemical structure and constituents,and their relationship with the excess coalbed methane.Previous studies suggested that tectonic deformation had significant influence on coal microstructure,coal super microstructure,and even chemical macromolecular structure.The main mechanisms of coal deformation are the tectonic stress degradation and polycondensation metamorphism(dynamical metamorphism).Besides,under different deformation mechanisms,the ultra-and micro-structure and chemical constituents of TDC presented distinct characteristics.Based on these achievements,we propose one possible evolutionary trend of TDC with different deformation mechanisms,and suggest that the coal and gas outburst in the TDC,especially in the mylonitic coals,may be not only controlled by geological structure,but also influenced by the tectonic stress degradation of ductile deformation.Therefore,further study on TDC should be focused on the controlling mechanism of deformation on structure and composition of coal,generation conditions and occurrence state of excess coalbed methane from deformation mechanism of coal. | HOU QuanLin LI HuiJun FAN JunJia JU YiWen WANG TianKai LI XiaoShi WU YuDong | 2012 | Science China Earth Sciences2012，55，11： | 49 |
| 2 | Micro-structural evolution and their effects on physical properties in different types of tectonically deformed coals显示文摘The macromolecular structure of tectonically deformed coals(TDC)may be determined by the deformation mechanisms of coal.Alterations of the macromolecular structure change the pore structure of TDC and thereby impact physical properties such as porosity and permeability.This study focuses on structure and properties of TDC from the Huaibei and Huainan coal mining areas of southern North China.Relationships between the macromolecular structure and the pore structure of TDC were analyzed using techniques such as X-ray diffraction,high-resolution transmission electron microcopy,and the low-temperature nitrogen adsorption.The results indicated that the directional stress condition can cause the arrangement of basic structural units(BSU)more serious and closer.And,the orientation is stronger in ductile deformed coal than in brittle deformed coal.Tectonic deformation directly influences the macromolecular structure of coal and consequently results in dynamic metamorphism.Because the size of BSU in brittle deformed coal increases more slowly than in ductile deformed coal,frictional heating and stress-chemistry of shearing areas might play a more important role,locally altering coal structure under stress,in brittle deformed coal.Strain energy is more significant in increasing the ductile deformation of coal.Furthermore,mesopores account for larger percentage of the nano-scale pore volume in brittle deformed coals,while mesopores volume in ductile deformed coal diminishes rapidly along with an increase in the proportion of micropores and sub-micropores.This research also approved that the deformations of macromolecular structures change nano-scale pore structures,which are very important for gas adsorption and pervasion space for gas.Therefore,the exploration and development potential of coal bed methane is promising for reservoirs that are subjected to a certain degree of brittle deformation(such as schistose structure coal,mortar structure coal and cataclastic structure coal).It also holds promise for TDC resulting from wrinkle structure coal of low ductile deformation and later superimposed by brittle deformation.Other kinds of TDC suffering from strong brittle-ductile and ductile deformation,such as scale structure coal and mylonitic structure coal,are difficult problems to resolve. | Yiwen Ju Kray Luxbacher Xiaoshi Li Guochang Wang Zhifeng Yan Mingming Wei Liye Yu | 2014 | International Journal of Coal Science & Technology2014，1，3： | 43 |
| 3 | New research progress on the ultrastructure of tectonically deformed coals显示文摘The structure of tectonically deformed coals shows some characteristics and regulations on the ultra-scale when influenced by different factors such as temperature,pressure and directional stress.Deformations of the macromolecular structure may induce changes in the nano-scale pore structure,which are very important for gas adsorption and pervasion.The geological impact of different mechanisms of deformation on different types of ultrastructure of tectonically deformed coals is not only of significance as a topic for scientific research, but also in studying environments of metamorphism-deformation at differing metamorphic stages.This research is also very important in studying the accumulation and occurrence conditions of coalbed methane gas,mechanisms of coal and gas outbursts,predictions of coalbed methane resources and dangers of coal and gas outbursts.This paper analyzes current research,within China and other countries, in the ultrastructure of tectonically deformed coals.The research includes(1) structural models of tectonically deformed coals;(2) the relationship between ultrastructure and stress;(3) the structure of tectonically deformed coals and its strain environment.These results are also based on our own experiments including vitirnite reflectance(R_(o,max)),X-ray diffraction(XRD) and nuclear magnetic resonance (NMR(CP/MAS + TOSS)).We discuss the important effects of the structure of tectonically deformed coals and their physical properties,and then point out some problems concerning the research progress of tectonically deformed coals. | Yiwen Ju,Xiaoshi Li Laboratory of Computational Geodynamics,College of Earth Science,Graduate University of Chinese Academy of Sciences,Beijing 100049,China | 2009 | Progress in Natural Science:Materials International2009，19，11： | 29 |
| 4 | Rice RING protein OsBBI1 with E3 ligase activity confers broad-spectrum resistance against Magnaporthe oryzae by modifying the cell wall defence显示文摘新兴的证据建议 E3 ligases 在多样的生物过程起关键作用,包括在植物的天生的有免疫力的回答。然而,在植物的 E3 ligase 参与的机制天生的免疫是不清楚的。我们报导那米饭基因, OsBBI1,与 E3 ligase 活动编码戒指手指蛋白质,调停用途广泛的疾病抵抗。OsBBI1 的表示被米饭强风真菌 Magnaporthe oryzae,以及化学 inducers 导致, benzothiadiazole 和水杨酸酸。生物化学的分析表明那 OsBBI1 蛋白质在 vitro 拥有 E3 ubiquitin ligase 活动。基因分析表明在一根 Tos17 插入线的 OsBBI1 功能的损失增加了危险性,当在转基因的植物的 OsBBI1 的 overexpression 授与提高的抵抗到 M 的多重赛跑时。oryzae。这显示 OsBBI1 对强风真菌调制用途广泛的抵抗。OsBBI1-overexpressing 植物由 M 在感染地点在房间墙中在酉分的混合物的房间和蛋白质的 cross-linking 显示出 H2O2 累积的高水平。oryzae 与相比野类型(WT ) 植物。房间墙在 OsBBI1-overexpressing 植物是更厚的并且在变异的植物更薄比在 WT 植物。我们的结果建议 OsBBI1 由修改房间墙防卫回答调制用途广泛的抵抗到强风真菌。OsBBI1 的功能的描述为在米饭对最破坏的疾病构造用途广泛的抵抗提供卓见进 E3 调停 ligase 的天生的免疫,和一个实际工具。 | Wei Li Sihui Zhong Guojun Li Qun Li Bizeng Mao Yiwen Deng Huijuan Zhang Longjun Zeng Fengming Song Zuhua He | 2011 | Cell Research2011，21，5： | 30 |
| 5 | Spectra response from macromolecular structure evolution of tectonically deformed coal of different deformation mechanisms显示文摘Coals with different deformation mechanisms(brittle deformation,brittle-ductile deformation,and ductile deformation) repre-sent different ways in macromolecular structure evolution based on the metamorphism.The evolution of coal structure could affect the occurrence condition of coalbed methane(CBM) because the nanopore structure affected by macromolecular struc-ture is the most important reservoir for CBM.This paper analyzes the evolutions and mechanisms of structure and functional group of tectonically deformed coals(TDCs) collected from Huainan-Huaibei coalfield using X-ray diffraction(XRD),Raman spectroscopy,and Fourier Transform Infrared(FTIR) spectroscopy methods.The results show that the macromolecular struc-ture evolutions of TDC are different from the primary structure coal as a result of the different metamorphic grade and defor-mation mechanisms.The different deformation mechanisms variously affect the process of functional group and polyconden-sation of macromolecular structure.Furthermore,the tectonic deformation leads to secondary structural defects and reduces the structure stability of TDC.The coupled evolution on stacking and extension caused by the changes of secondary structural de-fects results from different deformation mechanisms.We consider that the changes of chemical structure and secondary struc-tural defects are the primary reasons for the various structure evolutions of TDC compared with primary structure coal. | LI XiaoShi JU YiWen HOU QuanLin LIN Hong | 2012 | Science China Earth Sciences2012，55，8： | 18 |
| 6 | Numerical Investigation of Flow Separation Control on a Highly Loaded Compressor Cascade by Plasma Aerodynamic Actuation显示文摘To discover the characteristic of separated flows and mechanism of plasma flow control on a highly loaded compressor cascade, numerical investigation is conducted. The simulation method is validated by oil flow visualization and pressure distribution. The loss coefficients, streamline patterns, and topology structure as well as vortex structure are analyzed. Results show that the numbers of singular points increase and three pairs of additional singular points of topology structure on solid surface generate with the increase of angle of attack, and the total pressure loss increases greatly. There are several principal vortices inside the cascade passage. The pressure side leg of horse-shoe vortex coexists within a specific region together with passage vortex, but finally merges into the latter. Corner vortex exists independently and does not evolve from the suction side leg of horse-shoe vortex. One pair of radial coupling-vortex exists near blade trailing edge and becomes the main part of backflow on the suction surface. Passage vortex interacts with the concentrated shedding vortex and they evolve into a large-scale vortex rotating in the direction opposite to passage vortex. The singular points and separation lines represent the basic separation feature of cascade passage. Plasma actuation has better effect at low freestream velocity, and the relative reductions of pitch-averaged total pressure loss coefficient with different actuation layouts of five and two pairs of electrodes are up to 30.8% and 26.7% while the angle of attack is 2°. Plasma actuation changes the local topology structure, but does not change the number relation of singular points. One pair of additional singular point of topology structure generates with plasma actuation and one more reattachment line appears, both of which break the separation line on the suction surface. | ZHAO Xiaohu LI Yinghong WU Yun ZHU Tao LI Yiwen | 2012 | Chinese Journal of Aeronautics2012，25，3： | 17 |
| 7 | MHD Flow Control of Oblique Shock Waves Around Ramps in Low-temperature Supersonic Flows显示文摘This article is devoted to experimental study on the control of the oblique shock wave around the ramp in a low-temperature supersonic flow by means of the magnetohydrodynamic(MHD) flow control technique.The purpose of the experiments is to take advantage of MHD interaction to weaken the oblique shock wave strength by changing the boundary flow characteristics around the ramp.Plasma columns are generated by pulsed direct current(DC) discharge,the magnetic fields are generated by Nd-Fe-B rare-earth permanent magnets and the oblique shock waves in supersonic flow are generated by the ramp.The Lorentz body force effect of MHD interaction on the plasma-induced airflow velocity is verified through particle image velocimetry(PIV) measurements.The experimental results from the supersonic wind tunnel indicate that the MHD flow control can drastically change the flow characteristics of the airflow around the ramp and decrease the ratio of the Pitot pressure after shock wave to that before it by up to 19.66%,which leads to the decline in oblique shock wave strength.The oblique shock waves in front of the ramp move upstream by the action of the Lorentz body force.The discharge characteristics are analyzed and the MHD interaction time and consumed energy are determined with the help of the pulsed DC discharge images.The interaction parameter corresponding to the boundary layer velocity can reach 1.3 from the momentum conservation equation.The velocity of the plasma column in the magnetic field is much faster than that in the absence of magnetic field force.The plasma can strike the neutral gas molecules to transfer momentum and accelerate the flow around the ramp. | Su Changbing,Li Yinghong,Cheng Bangqin,Wang Jian,Cao Jun,Li Yiwen Engineering College,Air Force Engineering University,Xi’an 710038,China | 2010 | Chinese Journal of Aeronautics2010，23，1： | 15 |
| 8 | Rice functional genomics:decades'efforts and roads ahead显示文摘Rice(Oryza sativa L.)is one of the most important crops in the world.Since the completion of rice reference genome sequences,tremendous progress has been achieved in understanding the molecular mechanisms on various rice traits and dissecting the underlying regulatory networks.In this review,we summarize the research progress of rice biology over past decades,including omics,genome-wide association study,phytohormone action,nutrient use,biotic and abiotic responses,photoperiodic flowering,and reproductive development(fertility and sterility).For the roads ahead,cutting-edge technologies such as new genomics methods,high-throughput phenotyping platforms,precise genome-editing tools,environmental microbiome optimization,and synthetic methods will further extend our understanding of unsolved molecular biology questions in rice,and facilitate integrations of the knowledge for agricultural applications. | Rongzhi Chen Yiwen Deng Yanglin Ding Jingxin Guo Jie Qiu Bing Wang Changsheng Wang Yongyao Xie Zhihua Zhang Jiaxin Chen Letian Chen Chengcai Chu Guangcun He Zuhua He Xuehui Huang Yongzhong Xing Shuhua Yang Daoxin Xie Yaoguang Liu Jiayang Li | 2022 | Science China(Life Sciences)2022，65，1： | 12 |
| 9 | Preliminary Experimental Investigation on MHD Power Generation Using Seeded Supersonic Argon Flow as Working Fluid显示文摘这篇论文在 magnetohydrodynamic (MHD ) 上论述初步的试验性的调查把播种的超声的氩流动用作工作液体的发电。氦和氩被用作司机并且在一条吃惊隧道分别地驾驶气体。平衡接触表面操作模式被用来获得高温度气体,并且传导性被增加种子 K2CO3 粉末进驾驶的节获得。在嘴入口总数压力的条件下面是 0.32 MPa,全部的温度 6 504 K,磁场密度大约 0.5 T 和嘴插头速度 1 959 m/s,正式就职电压和分割 MHD 发电隧道的电线走火电流被测量,并且试验性的结果同意理论计算;平均传导性是从电压和电流的特征计算的大约 20 S/m。当负担因素是 0.5 时, MHD 发电隧道的最大的力量密度到达 4.797 1 MW/m3,和最大的热含量抽取率是 0.34% 。最后,为煤气的州的参数的间接测试的原则和方法被导出并且分析。 | LI Yiwen LI Yinghong LU Haoyu ZHU Tao ZHANG Bailing CHEN Feng ZHAO Xiaohu | 2011 | Chinese Journal of Aeronautics2011，24，6： | 11 |
| 10 | Anti-tumor activity and immunological modification of ribosome-inactivating protein (RIP) from Momordica charantia by covalent attachment of polyethylene glycol显示文摘使核糖体失去活性的蛋白质(裂开) 是酶的一个家庭那 depurinate rRNA 并且禁止蛋白质生合成。这里,我们报导纯化,导致 apoptosis 活动,和聚乙烯乙二醇(木钉) 修正从痛苦的甜瓜种子裂开。蛋白质有 N-Asp-Val-Ser-Phe-Arg 的一个同质的 N 终端序列。而且, RIP 显示了强壮的导致 apoptosis 活动和压制的癌症细胞生长。这可能被归因于 caspases-3 的激活。使它可得到为在 vivo 申请, immunogenicity 裂开被化学修正与 20 kDa (mPEG ) 减少 2-Lys-NHS。PEGylated 和 non-PEGylated 的抑制活动对癌症房间裂开比对正常 PEGylated 的房间,和 antigenicity 裂开的强壮得多显著地被减少。我们的结果建议 PEGylated 裂开可能潜在地作为反癌症被开发药。 | Mengen Li Yiwen Chen Zhongyu Liu Fubing Shen Xiaoxiao Bian Yanfa Meng | 2009 | Acta Biochimica et Biophysica Sinica2009，41，9： | 11 |
| 11 | Pressure balance and imbalance in the optic nerve chamber: The Beijing Intracranial and Intraocular Pressure (iCOP) Study显示文摘To determine the interdependence of intracranial pressure(ICP) and intraocular pressure(IOP) and how it affects optic nerve pressures, eight normal dogs were examined using pressure-sensing probes implanted into the left ventricle, lumbar cistern, optic nerve subarachnoid space in the left eye, and anterior chamber in the left eye. This allowed ICP, lumbar cistern pressure(LCP), optic nerve subarachnoid space pressure(ONSP) and IOP to be simultaneously recorded. After establishing baseline pressure levels, pressure changes that resulted from lowering ICP(via shunting cerebrospinal fluid(CSF) from the ventricle) were recorded. At baseline, all examined pressures were different(ICP>LCP>ONSP), but correlated(P<0.001). As ICP was lowered during CSF shunting, IOP also dropped in a parallel time course so that the trans-lamina cribrosa gradient(TLPG) remained stable(ICP-IOP dependent zone). However, once ICP fell below a critical breakpoint, ICP and IOP became uncoupled and TLPG changed as ICP declined(ICP-IOP independent zone). The optic nerve pressure gradient(ONPG) and trans-optic nerve pressure gradient(TOPG) increased linearly as ICP decreased through both the ICP-IOP dependent and independent zones. We conclude that ICP and IOP are coupled in a specific pressure range, but when ICP drops below a critical point, IOP and ICP become uncoupled and TLPG increases. When ICP drops, a rise in the ONPG and TOPG creates more pressure and reduces CSF flow around the optic nerve. This change may play a role in the development and progression of various ophthalmic and neurological diseases, including glaucoma. | Ruowu Hou Zheng Zhang Diya Yang Huaizhou Wang Weiwei Chen Zhen Li Jinghong Sang Sumeng Liu Yiwen Cao Xiaobin Xie Ruojing Ren Yazhuo Zhang Bernhard A. Sabel Ningli Wang | 2016 | Science China(Life Sciences)2016，59，5： | 11 |
| 12 | An H3K27me3 demethylase-HSFA2 regulatory loop orchestrates transgenerational thermomemory in Arabidopsis显示文摘Global warming has profound effects on plant growth and fitness.Plants have evolved sophisticated epigenetic machinery to respond quickly to heat,and exhibit transgenerational memory of the heat-induced release of post-transtriptional gene silencing(PTGS).However,how thermomemory is transmitted to progeny and the physiological relevance are elusive.Here we show that heat-induced HEAT SHOCK TRANSCRIPTION FACTOR A2(HSFA2)directly activates the H3K27me3 demethylase RELATIVE OF EARLY FLOWERING 6(REF6),which in turn derepresses HSFA2.REF6 and HSFA2 establish a heritable feedback loop,and activate an E3 ubiquitin ligase,SUPPRESSOR OF GENE SILENCING 3(SGS3)-INTERACTING PROTEIN 1(SGIP1).SGIP1-mediated SGS3 degradation leads to inhibited biosynthesis of trans-acting siRNA(tasiRNA).The REF&HSFA2 loop and reduced tasiRNA converge to release HEAT-INDUCED TAS1 TARGET 5(HTT5),which drives early flowering but attenuates immunity.Thus,heat induces transmitted phe no types via a coordi nated epigenetic network involvi ng histone demethylases,tran scriptio n factors,and tasiRNAs,ensuring reproductive success and transgenerational stress adaptation. | Junzhong Liu Lili Feng Xueting Gu Xian Deng Qi Qiu Qun Li Yingying Zhang Muyang Wang Yiwen Deng Ertao Wang Yuke He Isabel Baurle Jianming Li Xiaofeng Cao Zuhua He | 2019 | Cell Research2019，29，5： | 10 |
| 13 | Dissecting and Enhancing the Contributions of High-Molecular-Weight Glutenin Subunits to Dough Functionality and Bread Quality显示文摘Dear Editor, Seed storage proteins (SSPs) are frequently important determinants of crop quality traits (Shewry and Casey,1999).Dissecting and enhancing the genetic contributions of individual SSPs to their target traits are essential for effectively improving crop quality attributes.However,such a task is often difficult to accomplish,because SSPs are frequently expressed from multigene families and exhibit strong allelic variation.Consequently,detailed knowledge of the function of individual SSPs in crop quality trait is still limited.This scenario is well illustrated by high-molecular-weight glutenin subunits (HMWGSs),a complex family of SSPs that are involved in wheat enduse quality through affecting dough functionality (Békés,2012;Rasheed et al.,2014). | Yiwen Li Xuefi An Ran Yang Xiaomin Guo Guidong Yue Renchun Fan Bin Li Zhensheng Li Kunpu Zhang Zhenying Dong Luyan Zhang Jiankang Wang Xu Jia Hong-Qing Ling Aimin Zhang Xiangqi Zhang Daowen Wang | 2015 | Molecular Plant2015，8，2： | 9 |
| 14 | LICOM Model Datasets for the CMIP6 Ocean Model Intercomparison Project显示文摘The datasets of two Ocean Model Intercomparison Project(OMIP)simulation experiments from the LASG/IAP Climate Ocean Model,version 3(LICOM3),forced by two different sets of atmospheric surface data,are described in this paper.The experiment forced by CORE-II(Co-ordinated Ocean–Ice Reference Experiments,Phase II)data(1948–2009)is called OMIP1,and that forced by JRA55-do(surface dataset for driving ocean–sea-ice models based on Japanese 55-year atmospheric reanalysis)data(1958–2018)is called OMIP2.First,the improvement of LICOM from CMIP5 to CMIP6 and the configurations of the two experiments are described.Second,the basic performances of the two experiments are validated using the climatological-mean and interannual time scales from observation.We find that the mean states,interannual variabilities,and long-term linear trends can be reproduced well by the two experiments.The differences between the two datasets are also discussed.Finally,the usage of these data is described.These datasets are helpful toward understanding the origin system bias of the fully coupled model. | Pengfei LIN Zhipeng YU Hailong LIU Yongqiang YU Yiwen LI Jirong JIANG Wei XUE Kangjun CHEN Qian YANG Bowen ZHAO Jilin WEI Mengrong DING Zhikuo SUN Yaqi WANG Yao MENG Weipeng ZHENG Jinfeng MA | 2020 | Advances in Atmospheric Sciences2020，37，3： | 9 |
| 15 | Experimental demonstrations of high-Q superconducting coplanar waveguide resonators显示文摘We successfully designed and fabricated an absorption-type of superconducting coplanar waveguide (CPW) resonators. The resonators are made from a niobium film (about 160 nm thick) on a high-resistance Si substrate, and each resonator is fabricated as a meandered quarter-wavelength transmission line (one end is short to the ground and another end is capacitively coupled to a through feedline). With a vector network analyzer we measured the transmissions of the applied microwave through the resonators at ultra-low temperature. The obtained loaded quality factors are significantly high, i.e. up to ~10 6 . When the temperature increases slowly from the base temperature (20 mK), the resonance frequencies of the resonators are blue shifted and the quality factors are lowered slightly. In principle, this type of device can integrate a series of CPW resonators with a common feedline, making it a promising candidate as the data bus for coupling distant solid-state qubits and the sensitive detector of single photons. | LI HaiJie WANG YiWen WEI LianFu ZHOU PinJia WEI Qiang CAO ChunHai FANG YuRong YU Yang WU PeiHeng | 2013 | Chinese Science Bulletin2013，58，20： | 8 |
| 16 | Response of Macromolecular Structure to Deformation in Tectonically Deformed Coal显示文摘有不同 deformational 机制和不同 deformational 紧张的构造地使变形的煤(TDC ) 的结构的进化通过 31 上的分析不同变形等级取样的 X 光检查衍射(XRD ) 深入地被调查(Ro,最大:0.7%3.1%) 从 Huaibei 煤田镇定。结果显示在有变态和变丑增加的可锻、易碎的 deformational 煤之间有不同进化特征。随变态的增加,在一方面,原子飞机间距( d002 )在步速度正在减少,叠 BSU 层( Lc )起初正在增加然后减少,但是 BSU 层( La )和 La/Lc 的比率的延期开始正在减少然后增加。为易碎的 deformational 煤,当 deformational 紧张正在增加时,在另一方面, d002 开始正在增加然后减少,它在降低中间或高中间的变态等级下面引起 Lc 和 La 的变化的倒置。在可锻的 deformational 煤,相反, d002 开始减少了然后增加,并且 Lc 的价值随 deformational 的增加减少了紧张。但是 La 的价值在降低中间的变态等级下面增加了并且起初增加了然后在高中间的变态等级下面减少了。我们断定 TDC macromolecular 结构的降级和 polycondensation 能显然在可锻的 deformational 过程期间被影响,因为统一脱臼的增加和累积也许把压力转变成紧张精力。同时,易碎的变丑能把压力转变成部分热能,并且也支持变态和降级。变丑比对可锻、易碎的 deformational 煤的微分进化的变态更重要,这能被结束。 | LI Xiaoshi JU Yiwen HOU Quanlin FAN Junjia | 2013 | Acta Geologica Sinica(English Edition)2013，87，1： | 8 |
| 17 | Semantic-Oriented Sentiment Classification for Chinese Product Reviews: An Experimental Study of Book and Cell Phone Reviews显示文摘Sentiment classification is an automatic opinion classification method to classify the product reviews on web into positive or negative opinions to help consumers or sellers to understand the opinions and evaluations from existing customers. Semantic-oriented approach is one of the recent developments in sentiment classification. Up to now, most research of sentiment classification is on English reviews,and little work has been done on Chinese reviews using sentiment classification. The detailed techniques used in English review cannot be applied directly to Chinese reviews due to the different characteristics between these two languages. This study modified and improved the semantic-oriented approach to a 6-step process for Chinese review, focusing on the modification and improvement on the text segmentation and reference words pairs (RWPs) identification. Two experiments were conducted on book reviews and cell phone reviews. The results show that the performances of the proposed approach are comparable to those of the existing English reviews classification studies. | YE Qiang LI Yijun ZHANG Yiwen | 2005 | Tsinghua Science and Technology2005，10，z1： | 7 |
| 18 | ADVANCE SELLING IN THE PRESENCE OF PRODUCT DIFFUSION EFFECT显示文摘产品散开指以后的需求依赖于早出售的现象。调查卖策略的公司进展怎么被产品散开的效果影响,我们考虑一个独占者卖主在在二个时期上近视、战略的消费者包括的一个市场卖一个时髦产品(即,卖季节的进展和常规卖季节) 。为我们发现那的线性产品散开效果,当产品散开的效果是积极的时,卖主可以设置一个极其高的进展售价劝诱战略消费者在常规卖季节购买,它是违反直觉的。而且,为卖主的最佳的获得数量可以在战略消费者的数量在产品散开和减少的否定效果增加。当我们扩大我们的模型认为凹面二次时产品散开效果然而,最佳的获得数量是在战略消费者的数量的凹面。数字研究进一步被介绍讨论经理的卓见。 | Xiaoyan Xu Xuemei Li Yiwen Bian Yanhong Sun | 2017 | Journal of Systems Science and Systems Engineering2017，26，1： | 7 |
| 19 | Geochemical Characters of Water Coproduced with Coalbed Gas and Shallow Groundwater in Liulin Coalfield of China显示文摘To reveal the geochemical characters of water coproduced with coalbed gas and shallow groundwater,water samples were collected from 12 wells of coalbed methane and 7 wells of shallow groundwater.The pH,CODMn,fCO2,total dissolved solids(TDS),total hardness,and concentrations of metasilicic acid,sodium and kalium,calcium ion,magnesium ion,ammonium iron,bicarbonate ion,carbonate,chloride,sulfate ion,nitrate ion,fluoride,lithium,zinc,nickel,manganese,iron,boron,barium,etc.of the samples were measured.Research results showed the following:(1)Concentrations of TDS,chloride,fluoride,sodium and kalium,ammonium,iron,and barium in the water coproduced with coalbed gas exceeded the national standards of China;however,physical,chemical,and biological properties of shallow groundwater could meet the national standard.(2)The water produced from coalbed contained mainly Na–Cl·HCO3,with average TDS of 4588.5 ppm,whereas shallow groundwater contained a mixture of chemicals including Na·Mg·Ca-HCO3·SO4and Na·MgHCO3·SO4,with average TDS of 663.8 ppm.(3)In general,it was observed that bicarbonate and sodium accumulated in a reducing environment and deeper system,while depletion of hydrogen ions and dissolution of sulfate,calcium,and magnesium occurred in a redox environment and shallow system.(4)Sodium and kalium,ammonium,chloride,and bicarbonate ions were the main ions found in the study area. | YANG Mei JU Yiwen LIU Guijian TONG Li KANG Yu HOU Quanlin | 2013 | Acta Geologica Sinica(English Edition)2013，87，6： | 6 |
| 20 | Investigation of MHD power generation with supersonic non-equilibrium RF discharge显示文摘Magnetohydrodynamic(MHD) power generation with supersonic non-equilibrium plasma is demonstrated. Capacitively coupled radio frequency(RF) discharge(6 MHz, maximum continual power output of 200 W) was adopted to ionize the Mach number 3.5(650 m/s),0.023 kg/m3 airflow. In a MHD channel of 16 mm*10mm*20 mm, MHD open voltage of 10 V is realized in the magnetic field of 1.25 T, and power of 0.12 m W is extracted steadily and continuously in the magnetic field of 1 T. The reasons for limited power generation are proposed as:low conductivity of RF discharge; large touch resistance between MHD electrode and plasma;strong current eddies due to flow boundary layer. In addition, the cathode voltage fall is too low to have obvious effects on MHD power generation. | Yang Pengyu Zhang Bailing Li Yiwen Wang Yutian Duan Chengduo Fan Hao Gao Ling | 2016 | Chinese Journal of Aeronautics2016，29，4： | 6 |
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