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| 1 | Experimental investigation of the generation of large-amplitude internal solitary wave and its interaction with a submerged slender body显示文摘A principle of generating the nonlinear large-amplitude internal wave in a stratified fluid tank with large cross-section is proposed according to the‘jalousie’control mode.A new wave-maker based on the principle was manufactured and the experiments on the generation and evolution of internal solitary wave were conducted.Both the validity of the new device and applicability range of the KdV-type internal soliton theory were tested.Furthermore,a measurement technique of hydrodynamic load of internal waves was developed.By means of accurately measuring slight variations of internal wave forces exerted on a slender body in the tank,their interaction characteristics were determined.It is shown that through establishing the similarity between the model scale in the stratified fluid tank and the full scale in the numerical simulation the obtained measurement results of internal wave forces are confirmed to be correct. | WEI Gang DU Hui XU XiaoHui ZHANG YuanMing QU ZiYun HU TianQun YOU YunXiang | 2014 | Science China(Physics,Mechanics & Astronomy)2014，57，2： | 17 |
| 2 | How Chinese Financial Centers Integrate into Global Financial Center Networks:An Empirical Study Based on Overseas Expansion of Chinese Financial Service Firms显示文摘The increasing globalization of the Chinese economy has been enabled by both Chinese financial institutions operating globally as well as international firms operating within China. In geographical terms, this has been organized through a number of strategic cities serving as gateways for the exchange of financial functions, products and practices between China and the global economy. Drawing on location data of financial service firms in China listed on stock exchanges in Shenzhen, Shanghai and Hong Kong, this paper shows that Chinese financial firms are expanding globally and how Chinese financial centers are positioned and connected in the urban networks shaped by these financial service firms. It is found that Hong Kong, China, holds strategic positions in the integration of Chinese cities into global financial center networks, and that establishing a foothold in global financial centers such as New York and London has been a priority for Chinese financial institutions. The increasing capital flows directed by Chinese financial institutionssuggests a shifting global financial geography, with numerous Chinese cities playing increasingly important roles within global financial center networks. | PAN Fenghua HE Ziyun Thomas SIGLER Kirsten MARTINUS Ben DERUDDER | 2018 | Chinese Geographical Science2018，28，2： | 15 |
| 3 | Fluid-structure Interaction Analysis and Lifetime Estimation of a Natural Gas Pipeline Centrifugal Compressor under Near-choke and Near-surge Conditions显示文摘Up to present, there have been no studies concerning the application of fluid-structure interaction(FSI) analysis to the lifetime estimation of multi-stage centrifugal compressors under dangerous unsteady aerodynamic excitations. In this paper, computational fluid dynamics(CFD) simulations of a three-stage natural gas pipeline centrifugal compressor are performed under near-choke and near-surge conditions, and the unsteady aerodynamic pressure acting on impeller blades are obtained. Then computational structural dynamics(CSD) analysis is conducted through a one-way coupling FSI model to predict alternating stresses in impeller blades. Finally, the compressor lifetime is estimated using the nominal stress approach. The FSI results show that the impellers of latter stages suffer larger fluctuation stresses but smaller mean stresses than those at preceding stages under near-choke and near-surge conditions. The most dangerous position in the compressor is found to be located near the leading edge of the last-stage impeller blade. Compressor lifetime estimation shows that the investigated compressor can run up to 102.7 h under the near-choke condition and 200.2 h under the near-surge condition. This study is expected to provide a scientific guidance for the operation safety of natural gas pipeline centrifugal compressors. | JU Yaping LIU Hui YAO Ziyun XING Peng ZHANG Chuhua | 2015 | Chinese Journal of Mechanical Engineering2015，28，6： | 11 |
| 4 | Perfect teleportation of an arbitrary three-qubit state with the highly entangled six-qubit genuine state显示文摘The perfect teleportation of an arbitrary three-qubit state with the highly entangled six-qubit genuine state introduced by Borras et al.(J.Phys.A: Math.Theor.40 (2007) 13407) is studied.Some appropriate measuring bases the sender can take and the corresponding unitary operations the receiver should execute in terms of the sender’s measurement outcome are explicitly given.The flexibility between the measurement difficulty and the reconstruction difficulty is shown.Moreover,discussions and comparisons between our scheme and the recent incomplete scheme (Choudhury et al,J.Phys.A: Math.Theor.42 (2009) 115303) are made. | YIN XiaoFeng 1,LIU YiMin 2,ZHANG ZiYun 1,ZHANG Wen 1 & ZHANG ZhanJun 1 1 Key Laboratory of Optoelectronic Information Acquisition & Manipulation of Ministry of Education of China,School of Physics & Material Science,Anhui University,Hefei 230039,China 2 Department of Physics,Shaoguan University,Shaoguan 512005,China | 2010 | Science China(Physics,Mechanics & Astronomy)2010，53，11： | 7 |
| 5 | Simpler criterion and flexibility of operation complexity for perfectly teleporting arbitrary n-qubit state with 2n-qubit pure state显示文摘A criterion for whether a pure-state quantum channel consisting of 2n qubits averagely distributed between two nodes can be used for perfectly teleporting an arbitrary n-qubit state via Bell-state measurements is educed.Specifically,a matrix is composed of the coefficients of the known channel state and whether the matrix is unitary decides the criterion.As the criterion is apparently different from the usual standard entanglement criterion (USEC),its applicability is enlarged and verified by other measuring bases.Thorough analyses have further simplified the resultant criterion,so that a much simpler criterion than the USEC is conclusively obtained.Moreover,the flexibility of operation complexity between the non-unitary measurements and the unitary reconstructions is explicitly exhibited. | ZUO XueQin 1,LIU YiMin 2,ZHANG ZiYun 1,ZHANG Wen 1 & ZHANG ZhanJun 1 1 Key Laboratory of Optoelectronic Information Acquisition & Manipulation of Ministry of Education of China,School of Physics & Material Science,Anhui University,Hefei 230039,China 2 Department of Physics,Shaoguan University,Shaoguan 512005,China | 2010 | Science China(Physics,Mechanics & Astronomy)2010，53，11： | 5 |
| 6 | Structural insights into a high fidelity variant of SpCas9显示文摘The RNA-guided endonucleases of the CRISPR-Cas9 system, including the most w泊ely used Cas9 from Streptococcus pyogenes (SpCas9)z are becoming a robust genome editing tool in model organisms and hold immense promise for therapeutic applications. Many strategies have bee n employed to overcome the limitati ons caused by SpCas9zs off-target effects and its strin gent requirement for the protospacer adjacent motif (PAM) sequenee. However, the structural mechanisms underlying these strategies remain undefined. Here, we present crystal structure of a SpCas9 variant, xCas9 3.7 that has broad PAM compatibility and high DNA targeting specificity, in complex with a single-guide RNA and its double-stranded DNA targets. Structural comparison revealed that salt bridge-stabilized R1335 is critical for the stringent selection of PAM sequence by SpCas9. Unrestricted rotamerization of this residue by the E1219V mutation in xCas9 3.7 lessens the stringency for PAM recognition and allows SpCas9 to recognize multiple PAM sequences as further supported by biochemical data. Compared to those in wild-type (WT) SpCas9, REC2 and REC3 domains in xCas9 3.7 un dergo striki ng conformati onal changes, leadi ng to reduced con tact with DNA substrate. SpCas9 mutants en gineered to display less interaction with DNA and have conformationally more flexible REC2 and REC3 domains display enhanced specificity for DNA substrates in both biochemical and cellular assays. Taken together, our findings reveal the structural mechanisms underlying the broadened PAM compatibility and high DNA fidelity of xCas9 3.7, which can assist rational engineering of more efficient SpCas9 variants and probably other Cas9 orthologs. | Minghui Guo Kuan Ren Yuwei Zhu Ziyun Tang Yuhang Wang Bailing Zhang Zhiwei Huang | 2019 | Cell Research2019，29，3： | 5 |
| 7 | High-temperature oxidation behavior of modified 4Al alumina-forming austenitic steel: Effect of cold rolling显示文摘The oxidation behavior and mechanism of as-received and 30 % cold-rolled alumina-forming austenitic(AFA) steel were investigated in dry air at 700℃.The results show that the mass gain per unit area curves of as-received and 30 % cold-rolled steels subject to near-parabolic law before 100 h oxidation time.Two samples both show higher high-temperature oxidation resistance due to the formation of dense Al_(2)O_(3) oxide scale.Gradual spallation of outer scale results in the formation of continuous and dense alumina scale.Dislocations can act as short-circuit diffusion channel for the diffusion of Al from alloy matrix to surface,and also provide nucleation sites for B2-NiAl phase,which ensure the continuous formation of Al_(2)O_(3) scale. | Qiuzhi Gao Ziyun Liu Huijun Li Hailian Zhang Chenchen Jiang Aimin Hao Fu Qu Xiaoping Lin | 2021 | Journal of Materials Science & Technology2021，，9： | 5 |
| 8 | Comparative analysis of peptidoglycan recognition proteins in endoparasitoid wasp Microplitis mediator显示文摘Peptidoglycan 识别蛋白质(PGRP ) 是明确地在很多病原体的表面上认出 peptidoglycans (PGN ) 的天生的有免疫力的受体的一个家庭。这里,我们从 endoparasitoid 黄蜂识别了并且描绘六 PGRP, Microplitis 调停人(MmePGRPs ) 。在 parasitoid 黄蜂理解 PGRP 的角色,我们分析了他们的进化关系和 orthology,表示与克积极、否定的细菌和真菌在不同发展阶段,和 transcriptional 表示追随者感染期间介绍。MmePGRP-S1 显著地响应病原的感染被导致。这提示了我们评估 RNA 干扰的效果调停的基因特定 MmePGRP-S1 击倒。MmePGRP-S1 (iMmePGRP-S1 ) 击倒戏剧性地影响的 wasps’由小球菌 luteus 的幸存追随者挑战,对克积极的细菌在有免疫力的回答显示这特别 PGRP 的参与。这个行动是可能的被使用费小径调停,但是机制尚待坚定。MmePGRP-S1 不在由 iMmePGRP-S1 黄蜂的幸存率显示了的抗真菌的免疫起一个重要作用。这研究在经济地重要的 hymenopteran 种类 M 提供 PGRP 的全面描述。调停人。 | Rui-Juan Wang Zhe Lin Hong Jiang Jiancheng Li Tusar T. Saha Ziyun Lu Zhiqiang Lu Zhen Zou | 2017 | Insect Science2017，24，1： | 4 |
| 9 | Dietary energy intake affects fetal survival and development during early and middle pregnancy in Large White and Meishan gilts显示文摘This experiment was designed to determine the effects of variations in dietary energy intake on reproductive performance and gene expression of luteal and endometrium tissues in Large White(LW)and Meishan(MS) gilts during early and middle pregnancy. After insemination, 32 LW gilts were assigned to high and low(HE_Land LE_L, 14.23 and 12.56 MJ DE/kg, respectively) diet treatment groups,while 32 MS gilts were allocated to HE_M and LE_M(12.56 and 10.88 MJ DE/kg) groups. Gilts were slaughtered on days 35, 55 and 90 of gestation. The fetal survival and luteal progesterone(P_4) concentration in the HE_Lgroup were higher on day 35 but lower on day 90 of gestation compared with the LE_L group(P < 0.05) for LW gilts. However, fetal survival and luteal P_4 concentration on day 35 of gestation were greater(P < 0.05) in the LE_M group than in the HE_M group for MS gilts, but no significant difference in mid-gestation was showed. The fetal weights of both breeds were higher for the high energy diets compared with the respective control group on day 90 of gestation(P < 0.05). In addition,the m RNA levels of P_4 synthesis-related proteins had correlated with luteal P_4 concentration in both breeds. Further, endometrial levels of uteroferrin(ACP5), retinol-binding protein 4(RBP_4) and secreted phosphoprotein 1(SPP1) m RNA were upregulated in the HE_Lgroup on day 35 of gestation but ACP5 and SPP1 were downregulated on day 55 of gestation compared with the LE_Lgroup(P < 0.05) for LW gilts. In MS gilts, diet only affected the expression of SPP1(P < 0.05). Our results revealed the differential sensitivity of LW and MS breeds to variations in dietary energy intake. For LW gilts, the HE_Lgroup improved fetal survival on day 35 but a sustained high energy diet decreased fetal survival on day 90 of gestation. The differences in dietary energy intake did not influence fetal survival on day 90 of gestation but the higher energy diet did increase fetal weight in the MS breed compared with the lower energy intake diet. These results may be due to differential luteal secretion activity and endometrium gene expression in these two breeds. | Long Che Zhenguo Yang Mengmeng Xu Ziyun Zhang Peilin Liu Shengyu Xu Lianqiang Che Yan Lin Zhengfeng Fang Bin Feng Jian Li De Wu | 2015 | Animal Nutrition2015，，3： | 4 |
| 10 | Evolution,Control,and Effects of Interface in CNT/Al Composites:a Review显示文摘This review summarizes the work carried out in the field of interface study in carbon nanotube reinforced aluminum(CNT/Al) composites. Much research work has been conducted to reveal the evolution of CNT/Al interface in producing the composite with the purpose of achieving uniform distribution of CNTs and tight interfacial bonding. The effect and principles of coating were reviewed along with the illustration of ‘‘intermetallic interphases' ' design. Different roles of CNT/Al interface in structural and functional application were elucidated, and the future work that needs attention was addressed. | Genlian Fan Ziyun Yu Zhanqiu Tan Zhiqiang Li Di Zhang | 2014 | Acta Metallurgica Sinica(English Letters)2014，27，5： | 3 |
| 11 | Combining chlorination and sulfuration strategies for high-performance all-small-molecule organic solar cells显示文摘Three small-molecule donors based on dithieno [2,3-d:2’,3 ’-d’]-benzo[1,2-b:4,5-b’] dithiophene(DTBDT)unit were designed and synthesized by side chain regulation with chlorinated or/and sulfurated substitutions(namely ZR1,ZR1-Cl,and ZR1-S-Cl respectively),along with a crystalline non-fullerene acceptor IDIC-4 Cl with a chlorinated 1,1-dicyanomethylene-3-indanone(IC) end group.Energy levels,molar extinction coefficients and crystallinities of three donor molecules can be effectively altered by combining chlorination and sulfuration strategies.Especially,the ZR1-S-Cl exhibited the best absorption ability,lowest higher occupied molecular orbital(HOMO) energy level and highest crystallinity among three donors,resulting in the corresponding all-small-molecule organic solar cells to produce a high power conversion efficiency(PCE) of 12.05% with IDIC-4 Cl as an acceptor. | Ruimin Zhou Chen Yang Wenjun Zou Muhammad Abdullah Adil Huan Li Min Lv Ziyun Huang Menglan Lv Jianqi Zhang Kun Lu Zhixiang Wei | 2021 | Journal of Energy Chemistry2021，30，1： | 3 |
| 12 | A fault diagnosis method of reciprocating compressor based on sensitive feature evaluation and artificial neural network显示文摘A method combining information entropy and radial basis function network is proposed for fault automatic diagnosis of reciprocating compressors.Aiming at the current situation that the accuracy rate of reciprocating compressor fault diagnosis which depends on manual work in engineering is very low,we apply information entropy evaluation to select the sensitive features and make clear the corresponding relationship of characteristic parameters and failures.This method could reduce the feature dimension.Then,a complete fault diagnosis architecture has been built combining with radial basis function network which has the fast and efficient characteristics.According to the test results using experimental and engineering data,it is observed that the proposed fault diagnosis method improves the accuracy of fault automatic diagnosis effectively and it could improve the practicability of the monitoring system. | 兴成宏 Xu Fengtian Yao Ziyun Li Haifeng Zhang Jinjie | 2015 | High Technology Letters2015，21，4： | 3 |
| 13 | Compact 517 MHz soliton mode-locked Er-doped fiber ring laser显示文摘We report on a compact passive mode-locked Er:fiber ring laser operated at the fundamental repetition rate of 517 MHz, which we believe is the highest fundamental repetition rate ever reported in a ring cavity fiber laser.The key technique is the employment of two innovative high-power wavelength domain multiplexer collimators with all gain fiber cavity suited for the high power(up to 2 W) pumping. The laser is featured with a direct chirpfree output pulse, which is 97 fs without extracavity compression at an average output power of 90 mW. | Jian Zhang Ziyun Kong Yizhou Liu Aimin Wang Zhigang Zhang | 2016 | Photonics Research2016，4，1： | 2 |
| 14 | Characteristics of Nitric-Oxide Emissions from Traditional Flame and MILD Combustion Operating in a Laboratory-Scale Furnace显示文摘This study investigated the formation and emission characteristics of nitric oxide(NO) from flameless MILD(moderate or intensive low-oxygen dilution) combustion(MILDC) versus traditional visible-flame combustion(TC) in a 30-k W furnace. Both combustion processes were experimentally operated successively in the same furnace, burning natural gas at a fixed rate of 19 k W and the equivalence ratio of 0.86. Numerical simulations of TC and MILDC were carried out to explain their distinction in the measured furnace temperature and exhaust NO emissions. Present measurements of the NO emission(XNO) versus a varying furnace wall temperature(Tw) have revealed, at the first time, that the relationship of XNO ~ Tw was exponential in both TC and MILDC. By analyzing the simulated results, the average temperature over the reaction zone was identified to be the common characteristic temperature for scaling NO emissions of both cases. Moreover, relative to TC, MILDC had a fairly uniform temperature distribution and low peak temperature, thus reducing the NO emission by over 90%. The thermal-NO formation was found to contribute more than 70%-80% to the total XNO from TC while the N2O-intermediate route dominated the NO emission from MILDC. | SHU Ziyun WANG Feifei DAI Chong SI Jicang WANG Bo MI Jianchun | 2020 | Journal of Thermal Science2020，29，4： | 2 |
| 15 | Fast Community Detection Based on Distance Dynamics显示文摘The distance dynamics model is excellent tool for uncovering the community structure of a complex network. However, one issue that must be addressed by this model is its very long computation time in large-scale networks. To identify the community structure of a large-scale network with high speed and high quality, in this paper, we propose a fast community detection algorithm, the F-Attractor, which is based on the distance dynamics model. The main contributions of the F-Attractor are as follows. First, we propose the use of two prejudgment rules from two different perspectives: node and edge. Based on these two rules, we develop a strategy of internal edge prejudgment for predicting the internal edges of the network. Internal edge prejudgment can reduce the number of edges and their neighbors that participate in the distance dynamics model. Second, we introduce a triangle distance to further enhance the speed of the interaction process in the distance dynamics model. This triangle distance uses two known distances to measure a third distance without any extra computation. We combine the above techniques to improve the distance dynamics model and then describe the community detection process of the F-Attractor. The results of an extensive series of experiments demonstrate that the F-Attractor offers high-speed community detection and high partition quality. | Lei Chen Jing Zhang Lijun Cai Ziyun Deng | 2017 | Tsinghua Science and Technology2017，22，6： | 2 |
| 16 | Topic-sensitive neural headline generation显示文摘Neural models are being widely applied for text summarization,including headline generation,and are typically trained using a set of document-headline pairs.In a large document set,documents can usually be grouped into various topics,and documents within a certain topic may exhibit specific summarization patterns.Most existing neural models,however,have not taken the topic information of documents into consideration.This paper categorizes documents into multiple topics,since documents within the same topic have similar content and share similar summarization patterns.By taking advantage of document topic information,this study proposes a topic-sensitive neural headline generation model(TopicN HG).It is evaluated on a real-world dataset,large scale Chinese short text summarization dataset.Experimental results show that it outperforms several baseline systems on each topic and achieves comparable performance with the state-of-the-art system.This indicates that TopicN HG can generate more accurate headlines guided by document topics. | Ayana Ziyun WANG Lei XU Zhiyuan LIU Maosong SUN | 2020 | Science China(Information Sciences)2020，63，8： | 2 |
| 17 | The metabolism of soluble carbohydrates related to chilling injury in peach fruit exposed to cold stress显示文摘 | Ke Wang Xingfeng Shao Yifu Gong Yong Zhu Hongfei Wang Xinglong Zhang Dandan Yu Fang Yu Ziyun Qiu Hao Lu | 2013 | Postharvest Biology and Technology2013，，： | 1 |
| 18 | Effects of six sugars on the longevity, fecundity and nutrient reserves of Microplitis mediator显示文摘 | Shuping Luo Jiancheng Li Xiaoxia Liu Ziyun Lu Wenliang Pan Qingwen Zhang Zhangwu Zhao | 2009 | Biological Control2009，，1： | 1 |
| 19 | Studies on the spray dried lactose as carrier for dry powder inhalation显示文摘The purpose of this study was to investigate the spray dried lactose as carrier for dry powder inhalation(DPI).The lactose particles were prepared by spray drying,then the particle size,shape and crystal form were characterized by laser diffraction,scanning electron microscopy(SEM),X-ray diffraction(XRD)and differential scanning calorimetry(DSC).The spray dried lactose particles were spherical and amorphous,but would transfer to crystal form when storage humidity was above 32%.Thus,the humidity of the storage environment should be controlled below 30%strictly in order to maintain the amorphous nature of spray dried lactose which is a great benefit to DPI development. | Linna Wu Xu Miao Ziyun Shan Ying Huang Lu Li Xin Pan Qinghe Yao Ge Li Chuanbin Wu | 2014 | Asian Journal of Pharmaceutical Sciences2014，9，6： | 1 |
| 20 | International Comparison and Implications of Agricultural Development in Foreign Low Latitude Plateau Regions for Yunnan Province显示文摘Climatic characteristics of foreign low latitude plateau regions are firstly introduced.Then,experience and lessons of major foreign low latitude plateau countries in developing modern agriculture are analyzed,including Indian three agricultural revolutions and agricultural informationization development,application of agricultural biotechnology in Brazil,trade liberalization and economic de-agriculture of Mexico,and Argentina,Saudi Arabia and South Africa attaching great importance to developing modern agriculture relying on science and technology and paying close attention to resource conservation and environmental protection.Combining natural and social resource characteristics of Yunnan plateau agriculture,pertinent implications and recommendations for modern agricultural development in Yunnan are put forward.Specifically,these include strengthening agricultural sci-tech research and development,and extension and application;transforming agricultural development model;enhancing agricultural resource conservation and environmental protection;accelerating developing mountain organic ecological agriculture and autumn agriculture;reinforcing urban and rural integration to develop plateau characteristic agriculture on the basis of local actual conditions. | Yan LUO Yan YANG Rui CHEN Wei WU Ziyun PENG Liangzheng CHEN Xuelin LI | 2013 | Asian Agricultural Research2013，5，10： | 1 |
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