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| 1 | Effects of flavonoids from Allium mongolicum Regel on growth performance and growth-related hormones in meat sheep显示文摘This study was conducted to investigate the effects of different doses of flavonoids from Allium mongolicum Regel on the production performance and neuroendocrine hormones in meat sheep and to determine the optimum dosage of Allium mongolicum Regel flavonoids to add to the basal diet of dry lotfeeding meat sheep. Sixty meat sheep(initial body weight = 39.9 ± 3.2 kg; 6-month-old) were randomly assigned to 4 groups(15 sheep per group). The sheep in the control group were fed a basal diet, and the 3 experimental groups were fed the basal diet supplemented with flavonoids at 11.22 and 33 mg/kg. Blood samples were collected via the jugular vein at d 0.15, 30, 45, and 60 to determine the neuroendocrine hormone levels. The fasting weight of the sheep was measured during the experimental period, and feed offered and refusals were recorded daily. The basal diet supplemented with flavonoids from 11 to 33 mg/kg significantly increased the daily weight gain and average daily feed intake(P<0.05) and significantly decreased the feed conversion ratio(P<0.05), but there were no differences among the supplementation groups(P>0.05). Starting on d 30, the growth hormone(GH) and insulin-like growth factor-1(IGF-1)levels in the sera of the sheep in the supplementation groups increased significantly(P<0.05), and the increases occurred in a time-dependent manner. Compared with control group, after d 30, the serum corticosterone(CORT) levels were reduced in the sheep that consumed the basal diet supplemented with22 mg/kg flavonoids(P<0.05), but among the other experimental groups, there was a non-significant effect(P>0.05). The serum adrenocorticotropic hormone(ACTH) levels were increased by the supplementation of flavonoids, but compared with the control group, the effect was not significant. The basal diet supplemented with flavonoids at levels from 11 to 33 mg/kg had a significant effect on the production performance and neuroendocrine hormone levels of meat sheep, and the effect occurred in a time-dependent manner. The effect was especially obvious after 30 d of feeding. | Muqier Sarula Qi Terigele Wang Renwei Chen Cuifang Wang Changjin Ao | 2017 | Animal Nutrition2017，，1： | 18 |
| 2 | SPECIAL ISSUE: INCOME INEQUALITY IN CHINA Market Reform and the Widening of the Income Gap显示文摘在市场化过程中,中国出现了收入差距不断扩大的趋势,从而社会上出现了一些将收入差距扩大的原因归结为市场化改革的错误认识。本文通过对我国改革开放以来收入分配格局变化的主要特点和导致收入差距扩大的原因加以细致实证分析,对一些模糊认识加以澄清。本文认为在个人收入差距扩大的诸多因素中,传统计划体制遗留下来的一些制度和政策,在部门利益和地方利益驱使下新形成的有悖于市场体制规则的制度和政策,政府对市场缺失和市场扭曲采取的不作为态度,对资本节制和劳动保护的不足,政府对经济的过度干预。 | Li Shi Zhao Renwei | 2011 | Social Sciences in China2011，32，2： | 17 |
| 3 | Optimization of air quantity regulation in mine ventilation networks using the improved differential evolution algorithm and critical path method显示文摘In mine ventilation networks, the reasonable airflow distribution is very important for the production safety and economy. Three basic problems of the natural, full-controlled and semi-controlled splitting were reviewed in the paper. Aiming at the high difficulty semi-controlled splitting problem, the general nonlinear multi-objectives optimization mathematical model with constraints was established based on the theory of mine ventilation networks. A new algorithm, which combined the improved differential evaluation and the critical path method(CPM) based on the multivariable separate solution strategy,was put forward to search for the global optimal solution more efficiently. In each step of evolution,the feasible solutions of air quantity distribution are firstly produced by the improved differential evolution algorithm, and then the optimal solutions of regulator pressure drop are obtained by the CPM.Through finite steps iterations, the optimal solution can be given. In this new algorithm, the population of feasible solutions were sorted and grouped for enhancing the global search ability and the individuals in general group were randomly initialized for keeping diversity. Meanwhile, the individual neighborhood in the fine group which may be closely to the optimal solutions were searched locally and slightly for achieving a balance between global searching and local searching, thus improving the convergence rate. The computer program was developed based on this method. Finally, the two ventilation networks with single-fan and multi-fans were solved. The results show that this algorithm has advantages of high effectiveness, fast convergence, good robustness and flexibility. This computer program could be used to solve large-scale generalized ventilation networks optimization problem in the future. | Chen Kaiyan Si Junhong Zhou Fubao Zhang Renwei Shao He Zhao Hongmei | 2015 | International Journal of Mining Science and Technology2015，25，1： | 15 |
| 4 | The Dabie Orogen as the early Jurassic sedimentary provenance: Constraints from the detrital zircon SHRIMP U-Pb dating显示文摘The SHRIMP U-Pb ages of detrital zircon from the oldest Mesozoic strata, the Fanghushan Fomation, in the Hefei Basin range from 200 Ma to ca. 2500 Ma, which indicates that the Dabie Orogen as the early Jurassic sedimentary provenance was complex. The composition of the Dabie Orogen includes: the Triassic high pressure-ultrahigh pressure metamorphic rocks, of which the detrital zircon ages are from 234 Ma to 200 Ma; the rocks possibly related to the Qinling and Erlangping Groups representing the southern margin of the Sino-Korean craton in the Qinling and Dabie area, of which the detrital zircon has an age of 481-378 Ma; the Neoproterozoic rocks originated from the Yangtze croton, of which the detrital zircon ages are 799-721 Ma old; and the rocks with the detrital zircon ages of ca. 2000 Ma and ca. 2500 Ma, which could be the old basement of the Yangtze craton. | LI Renwei, WAN Yusheng, CHENG Zhenyu, ZHOU Jianxiong, XU Yunhua, LI Zhong & JIANG Maosheng Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China | 2005 | Science China Earth Sciences2005，48，2： | 9 |
| 5 | The Late Pleistocene activity of the eastern part of east Kunlun fault zone and its tectonic significance显示文摘The nearly EW-trending East Kunlun fault zone is the north boundary of the Bayan Har block.The activity characteristics and the position of the eastern end of its eastward extension are of great significance to probing into the dynamic mechanism of formation of the east edge of the Tibetan Plateau,and also lay the foundation for seismic risk assessment of the fault zone.The following results are obtained by analysis based on satellite image interpretation of landforms,surface rupture survey,terrace scarp deformation survey,and terrace dating data on the eastern part of the East Kunlun fault zone:(1)the Luocha segment is a Holocene active fault,where a reverse L-shape paleoearthquake surface rupture zone of about 50 km long is located;(2)the Luocha segment is characterized by left-lateral slip movement under the compression-shear condition since the later period of the Late Pleistocene,with a rate of 7.68–9.37 mm/a and a vertical slip rate of 0.7–0.9 mm/a,which are basically in accord with the activity rate of segments on its west side.The results indicate that it is a part of eastward extension of the East Kunlun fault zone;(3)the high-speed linear horizontal slip of the nearly EW-trending East Kunlun fault zone is blocked by the South China block at east,and transforms into the vertical movement of the nearly SN-NNE trending Minjiang fault zone and the Longmenshan fault zone,and the uplift of Longmenshan and Minjiang.The area where transform of the two tectonic systems occurred confines the position of the east end;(4)Luocha segment and Maqu segment constitute the'Maqu seismic gap',so,seismic risk at Maqu segment is higher than that at Luocha segment,which should attract more attention. | ZHANG JunLong REN JinWei CHEN ChangYun FU JunDong YANG PanXin XIONG RenWei HU ChaoZhong | 2014 | Science China Earth Sciences2014，57，3： | 8 |
| 6 | Effects of Double Harvesting on Heavy Metal Uptake by Six Forage Species and the Potential for Phytoextraction in Field显示文摘The pollution of soils by heavy metals has dramatically increased in recent decades. Phytoextraction is a technology that extracts elements from polluted soils using hyperaccumulator plants. The selection of appropriate plant materials is an important factor for successful phytoextraction in field. A field study was conducted to compare the efficiency of six high-biomass forage species in their phytoextraction of heavy metals(Cd, Pb, and Zn) from contaminated soil under two harvesting strategies(double harvesting or single harvesting). Among the tested plants, amaranth accumulated the greatest amounts of Cd and Zn, whereas Rumex K^(-1) had the highest amount of Pb in the shoot under both double and single harvesting. Furthermore, double harvesting significantly increased the shoot biomass of amaranth, sweet sorghum and sudangrass and resulted in higher heavy metal contents in the shoot. Under double harvesting, the total amounts of extracted Cd, Pb and Zn(i.e., in the first plus second crops) for amaranth were 945, 2 650 and 12 400 g ha^(-1), respectively, the highest recorded among the six plant species. The present results indicate that amaranth has great potential for the phytoextraction of Cd from contaminated soils. In addition, the double harvesting method is likely to increase phytoextraction efficiency in practice. | LI Ningyu GUO Bin LI Hua FU Qinglin FENG Renwei DING Yongzhen | 2016 | Pedosphere2016，26，5： | 8 |
| 7 | Stable carbon and oxygen isotopic compositions of carbonates in middle Mesoproterozoic Wumishan Formation and sea-level change显示文摘δ13C of dolostones from the Wumishan Formation (1 310-1 207 Ma) in the Ming Tombs area near Beijing ranges from - 1.5 to 1.5‰ (PDB), and generally, the δ18O ranges from - 4 to - 5‰ (PDB). The secular variation of stable carbon isotopic compositions is cyclic. δ13C displays positive shifts from a sequence boundary to 1.5 per mil (PDB), then | Renwei Li Jinshi Chen Shukun Zhang | 1999 | Chinese Science Bulletin1999，44，23： | 7 |
| 8 | China's Geo-cultural Strategy显示文摘This paper divides China's geocultural space into global,Asian, and neighboring spheres,explores the major challenges China's geocultural policy faces in each of them,and puts forward options for China's geocultural strategy.It also suggests that the development of China's geoculture should be based on a triple-circled geopolitical pattern, and should adopt a strategy of addressing regional issues first and global issues second.China's priorities should be the building up of its own culture,the consolidation of neighboring geocultural space,promoting the geocultural integration of Asia,becoming more involved in global geocultural interactions,and enhancing China's cultural influence and status. | Pan Zhongqi Professor of the School of International Relations and Public Affairs,Fudan University.His research interests are theory of international relations,national security strategy,and China’s place in the international system. Huang Renwei Vice President and a Research Professor of the Shanghai Academy of Social Sciences.His research interests are relations between great powers,national strategy,and international economy. Wang Hui | 2008 | Contemporary International Relations2008，18，2： | 5 |
| 9 | Joints of continuous carbon fiber reinforced lithium aluminosilicate glass ceramics matrix composites to Ti60 alloy brazed using Ti-Zr-Ni-Cu active alloy显示文摘Continuous carbon fiber reinforced lithium aluminosilicate glass ceramics matrix composites(C_f/LAS composites) are joined to Ti60 alloy vacuum brazed using Ti-Zr-Ni-Cu brazing alloy. The effects of the brazing temperature on the interfacial microstructure and mechanical properties of brazed joints are investigated in details. The interfacial microstructure varies apparently with an increase of the brazing temperature. The thicknesses of the banded Ti solid solution(Ti(s, s)) and the reactive layer between Cf/LAS composites and the interlayer grow gradually. The mechanical properties of brazed joints increase firstly and then decrease with an increasing temperature. In addition, a joint that is brazed at 980 °C for 10 min shows the highest shear strength of$38.13 MPa. At the same time, the fracture paths of brazed joints also change as the temperature increases. When the brazing temperature is 950 °C, the fracture position is in the TiC + ZrC +Ti_2O + ZrSi_2+ Ti_5Si_3 layer on the composite side. When the brazing temperature is 980 °C, the fracture position is on the side of the braze seam(Ti, Zr)2(Ni, Cu), Ti_2O + ZrSi_2+ Ti_5Si_3 layer,and carbon fiber in the composite material. When the brazing temperature is 990 °C, the fracture position is in the Ti_2O + ZrSi_2+ Ti_5Si_3 layer on the composite side and the carbon fiber in the composite material. | Shengpeng HU Dongdong FENG Long XIA Ke WANG Renwei LIU Zhentao XIA Hongwei NIU Xiaoguo SONG | 2019 | Chinese Journal of Aeronautics2019，32，3： | 4 |
| 10 | PG-CODE:Latent Dirichlet Allocation Embedded Policy Knowledge Graph for Government Department Coordination显示文摘Government policy-group integration and policy-chain inference are significant to the execution of strategies in current Chinese society.Specifically,the coordination of hierarchical policies implemented among government departments is one of the key challenges to rural revitalization.In recent years,various well-established quantitative methods have been proposed to evaluate policy coordination,but the majority of these relied on manual analysis,which can lead to subjective results.Thus,in this paper,a novel approach called“policy knowledge graph for the coordination among the government departments”(PG-CODE)is proposed,which incorporates topic modeling into policy knowledge graphs.Similar to a knowledge graph,a policy knowledge graph uses a graph-structured data model to integrate policy discourse.With latent Dirichlet allocation embedding,a policy knowledge graph could capture the underlying topics of the policies.Furthermore,coordination strength and topic diffusion among hierarchical departments could be inferred from the PG-CODE,as it can provide a better representation of coordination within the policy space.We implemented and evaluated the PG-CODE in the field of rural innovation and entrepreneurship policy,and the results effectively demonstrate improved coordination among departments. | Yilin Kang Renwei Ou Yi Zhang Hongling Li Shasha Tian | 2022 | Tsinghua Science and Technology2022，27，4： | 3 |
| 11 | Adaptive accurate tracking control of HFVs in the presence of dead-zone and hysteresis input nonlinearities显示文摘A novel accurate tracking controller is developed for the longitudinal dynamics of Hypersonic Flight Vehicles(HFVs)in the presence of large model uncertainties,external disturbances and actuator nonlinearities.Distinct from the state-of-the-art,besides being continuity,no restrictive conditions have been imposed on the HFVs dynamics.The system uncertainties are skillfully handled by being seen as bounded'disturbance terms'.In addition,by means of backstepping adaptive technique,the accurate tracking(i.e.tracking errors converge to zero as time approaches infinity)rather than bounded tracking(i.e.tracking errors converge to residual sets)has been achieved.What’s more,the accurate tracking problems for HFVs subject to actuator dead-zone and hysteresis are discussed,respectively.Then,all signals of closed-loop system are verified to be Semi-Global Uniformly Ultimate Boundness(SGUUB).Finally,the efficacy and superiority of the developed control strategy are confirmed by simulation results. | Zehong DONG Yinghui LI Maolong LV Renwei ZUO | 2021 | Chinese Journal of Aeronautics2021，34，5： | 3 |
| 12 | Backup roll contour of a SmartCrown tandem cold rolling mill显示文摘SmartCrown was a new system developed by VAI for improving the strip profile and flatness control first applied in 1700 mm tandem cold rolling mills at Wuhan Iron & Steel(Group)Corporation(WISCO).After tracing and testing,the application of the conventional crown backup roll matching the SmartCrown work roll of the production mill led to heavy and nonuniform wear,and the edge spalling of the backup roll often occurred.A 3-dimension finite element model of roll stacks was established,which was used to analyze the above-mentioned problems,and it was found that the main reason was the highly nonuniform contact pressure distribution between the work roll and the backup roll.A new FSR(flexible shape backup roll)was developed and applied in 1700 mm tandem cold rolling mills.A lot of good actual effects of FSR,such as evident improvement in profile and flatness of strips, non-occurring edge spalling,wear uniform,and remarkable decrease in roll consumption were validated by long-term industrial ap- plications. | Guanghui Yang Jianguo Cao Jie Zhang Shenghui Jia Renwei Tan | 2008 | Journal of University of Science and Technology Beijing2008，15，3： | 3 |
| 13 | Expression of partial tandem duplication of mixed lineage leukaemia in patients with acute leukaemia and their relatives显示文摘 | He Yi Wang Dongning Li Xudong Hu Yuan Wang Wenwen Huang Renwei | 2014 | Chinese Medical Journal2014，，2： | 3 |
| 14 | DISTRIBUTION MODEL OF FATIGUE LIFEAND ITS GOODNESS-OF-FIT TEST显示文摘From the view point of meso-damage mechanics,a lot of practical physi-cal models, which are able to be used to describe the distnbution law of fatigue life, areestablished, the hkelihood estimate expressions of these distnbution parameters are giv-en, and | Dong Cong Rong Haiwu Xia Renwei(Department of Aircraft Engineering, Beijing University ofAeronautics and Astronaulies, Beijing, China, 100081) | 1995 | Chinese Journal of Aeronautics1995，8，3： | 3 |
| 15 | Rb-Sr chronological characteristics of Jurassic granitoid gravels in north margin of Dabie block,Central China显示文摘Granitoid gravels are discovered from alluvial fan conglomerates, the base of Jurassic Fenghuangtai Formation (J22), in the north margin of Dabie block and the south part of the Hefei Basin. These granitoid gravels make up 5%-10% of all gravels by volume percent. For the four components, K-feldspar, biotite, amphibole and whole rock divided from two selected granitoid gravel samples, their Rb-Sr isotopes are measured, which gives two formation ages of granitoids: (428±20) Ma and (430±54) Ma, and means that the Early Paleozoic granitoid intrusive rocks once existed in the Dabie Mountain provenances of Jurassic. The granitoids occur in the tectonic setting of post-collision upliftaccording to lithogeochemical discriminant analysis. | Li Zhong Li Renwei Sun Shu Zhang Wenhua | 2001 | Chinese Science Bulletin2001，46，13： | 3 |
| 16 | Influence of TiB2 particles on machinability and machining parameter optimization of TiB2/Al MMCs显示文摘In situ formed TiB_2 particle reinforced aluminum matrix composites(TiB_2/Al MMCs)have some extraordinary properties which make them be a promising material for high performance aero-engine blade.Due to the influence of TiB_2 particles, the machinability is still a problem which restricts the application of TiB_2/Al MMCs.In order to meet the industrial requirements, the influence of TiB_2 particles on the machinability of TiB_2/Al MMCs was investigated experimentally.Moreover, the optimal machining conditions for this kind of MMCs were investigated in this study.The major conclusions are:(1) the machining force of TiB_2/Al MMCs is bigger than that of nonreinforced alloy and mainly controlled by feed rate;(2) the residual stress of TiB_2/Al MMCs is compressive while that of non-reinforced alloy is nearly neutral;(3) the surface roughness of TiB_2/Al MMCs is smaller than that of non-reinforced alloy under the same cutting speed, but reverse result was observed when the feed rate increased;(4) a multi-objective optimization model for surface roughness and material removal rate(MRR) was established, and a set of optimal parameter combinations of the machining was obtained.The results show a great difference from Si C particle reinforced MMCs and provide a useful guide for a better control of machining process of this material. | Ruisong JIANG Xinfa CHEN Renwei GE Wenhu WANG Guodong SONG | 2018 | Chinese Journal of Aeronautics2018，31，1： | 3 |
| 17 | Numerical Simulations of the Ice Load of a Ship Navigating in Level Ice Using Peridynamics显示文摘In this study,a numerical method was developed based on peridynamics to determine the ice loads for a ship navigating in level ice.Convergence analysis of threedimensional ice specimen with tensile and compression loading are carried out first.The effects of ice thickness,sailing speed,and ice properties on the mean ice loads were also investigated.It is observed that the ice fragments resulting from the icebreaking process will interact with one another as well as with the water and ship hull.The ice fragments may rotate,collide,or slide along the ship hull,and these ice fragments will eventually drift away from the ship.The key characteristics of the icebreaking process can be obtained using the peridynamic model such as the dynamic generation of cracks in the ice sheet,propagation and accumulation of ice fragments,as well as collision,rotation,and sliding of the ice fragments along the ship hull.The simulation results obtained for the ice loads and icebreaking process were validated against those determined from the Lindqvist empirical formula and there is good agreement between the results. | Yanzhuo Xue Renwei Liu Yang Liu Lingdong Zeng Duanfeng Han | 2019 | Computer Modeling in Engineering & Sciences2019，，11： | 3 |
| 18 | Hierarchical recognition on the taxonomy of Nitzschia closterium f. minutissima显示文摘Nitzschia closterium f. minutissima, a marine eukaryotic unicellular diatom, originally classified as Bacillariophyta/Bacillariophyceae/Bacillariales/Bacillariaceae/Nitzschia, is one of the most important feed sources in mariculture. In this study, its morphological features were examined under DIC Microscopy (differential interference contrast microscope); its pigments and fatty acids composition were analyzed by using High Performance Liquid Chromatography (HPLC) and gas chromatography (GC); the complete Actin cDNA, part 18S rDNA, complete ITS1 and ITS2 sequences, part 28S rDNA se- quences, and a putatively encoding ?5 fatty acid desaturase gene were cloned respectively and further functioned in transgenic yeast. The sequence alignments were separately conducted using the related sequences from Nitzschia closterium f. minutissima, Cylindrotheca closterium (Bacillariophyta/Baci- llariales/Bacillariaceae/Cylindrotheca) and Phaeodactylum tricornutum (Naviculales) with ClustalX 1.83. No distinct difference was discovered between N. closterium f. minutissima and P. tricornutum in both biochemical and molecular level. Their identity was more than 99.6% among 18S rDNA, 5.8S rDNA and actin-gene sequences, and is up to 98.6% even among ITS1 and ITS2 sequences. Their ?5 desaturase similarity was 99.4%. However, the lower similarity was disclosured between N. closterium f. minutis- sima and Cylindrotheca closterium, which shared less than 40% identity in the ITS1 and ITS2 se- quences. So, N. closterium f. minutissima should not be placed in Bacillariales, Bacillariaceae, Nitzschia, but in Naviculales, Phaeodactylaceae, Phaeodactylum, and it was actually a strain of P. tri- cornutum. | SHI Juan PAN KeHou WANG XiaoQing CHEN Fang ZHOU Mi ZHU BaoHua QING RenWei | 2008 | Chinese Science Bulletin2008，53，2： | 3 |
| 19 | CRISPR/Cas9-mediated targeted mutation reveals a role for AN4 rather than DPL in regulating venation formation in the corolla tube of Petunia hybrida显示文摘Venation is a common anthocyanin pattern displayed in flowers that confers important ornamental traits to plants.An anthocyanin-related R2R3-MYB transcription factor,DPL,has been proposed to regulate corolla tube venation in petunia plants.Here,however,we provide evidence redefining the role of DPL in petunia.A CRISPR/Cas9-mediated mutation of DPL resulted in the absence of the vein-associated anthocyanin pattern above the abaxial surface of the flower bud,but not corolla tube venation,thus indicating that DPL did not regulate the formation of corolla tube venation.Alternately,quantitative real-time PCR analysis demonstrated that the spatiotemporal expression pattern of another R2R3-MYB gene,AN4,coincided with the formation of corolla tube venation in petunia.Furthermore,overexpression of AN4 promoted anthocyanin accumulation by increasing the expression of anthocyanin biosynthesis genes.CRISPR/Cas9-mediated mutation of AN4 led to an absence of corolla tube venation,suggesting that this gene in fact determines this key plant trait.Taken together,the results presented here redefine the prime regulator of corolla tube venation,paving the way for further studies on the molecular mechanisms underlying the various venation patterns in petunia. | Bin Zhang Xiaojing Xu Renwei Huang Sha Yang Mingyang Li Yulong Guo | 2021 | Horticulture Research2021，8，1： | 2 |
| 20 | Wear Mechanism of WC-Co Cemented Carbide Tool in Cutting Ti-6Al-4V Based on Thermodynamics显示文摘In order to optimize the tool coating material and reduce the tool wear rate,the coating material and wear mechanism for carbide tools are proposed and analyzed based on thermodynamics theory.We deduced the Gibbs free energy function method and analyzed the enthalpy value of the coating material of cemented carbide tools.The rules of diffusion wear and oxidation wear for WC-Co-based carbide tools were analyzed based on the diffusion dissolution theory and the calculation method of the thermal effect of chemical reaction.The diffusion wear and oxidation wear of WC-Co-based carbide tools when machining Ti-6Al-4V were studied with SEM-EDS.The results indicate that a good prediction accuracy of both diffusion wear and oxidation wear can be achieved by the method of thermodynamic theory analysis method.The conclusion will provide useful references for the optimization of cutting parameters and the improvement of the tool life. | 胡小龙 邵芳 WANG Renwei | 2020 | Journal of Wuhan University of Technology(Materials Science)2020，35，5： | 2 |
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