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一个家兔生理综合性实验的启示

畜牧与饲料科学 2014年第2期35卷 31-33页

作者：吕琼霞陈晓光刘玉梅邓雯李文巧河南科技大学动物科技学院河南洛阳471003

以家兔为实验材料,用Pclab-UE系统采集处理生物信号,对血压、呼吸、泌尿综合实验进行了设计。该实验设计可以利用1只家兔进行多个实验,能充分节省实验动物和时间,又能提高实验成功率,不仅解决了学生在学习过程中的疑虑,而且使实验动物... 详细信息

以家兔为实验材料,用Pclab-UE系统采集处理生物信号,对血压、呼吸、泌尿综合实验进行了设计。该实验设计可以利用1只家兔进行多个实验,能充分节省实验动物和时间,又能提高实验成功率,不仅解决了学生在学习过程中的疑虑,而且使实验动物物尽其用,节约了实验经费,还可以缓解课时短缺的矛盾,更可以增强学生的学习兴趣、信心和积极性,从而提高了学生的综合素质,加强了学生的知识连贯性,使其能够更好地掌握动物生理学的相关内容。

关键词：综合实验生理学实验兴趣家兔

昆仑山口西8.1级地震宏观震中与破裂起始点的判定

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高原地震 2004年第2期16卷 9-20页

作者：王赞军李文巧李智敏张加庆苏旭青海省地震局青海西宁810001 中国地震局兰州地震研究所甘肃兰州730000

对比分析国内外不同学者对昆仑山口西8 1级地震地表破裂带的考察结果和作者4次现场考察记录,认为:本次地震的宏观震中及破裂起始点位于同一地点,即布喀达坂峰东南3km处,与根据中国数字化地震台网资料确定的微观震中基本一致。

关键词：昆仑山口西8.1级地震宏观震中地表破裂

Purification of carbazole by solvent crystallization under two forced cooling modes

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Chinese Journal of Chemical Engineering 2021年第7期34卷 173-179页

作者： Cui-Ping Ye Ya-Fei qiao Rui-Nan Wang wen-Ying li College of Environmental Science and Engineering Taiyuan University of TechnologyJinzhong 030600China Training Base of State Key Laboratory of Coal Science and Technology Jointly Constructed by Shanxi Province and Ministry of Science and Technology Taiyuan University of TechnologyTaiyuan University of TechnologyTaiyuan 030024China

To identify the effect of solvents and anthracene on the purification of carbazole,the solvent crystallization of carbazole was investigated with xylene,chlorobenzene and tetrachloroethylene(TCE)as solvents under two forced circulation cooling(FCC)*** co-crystalline experimental data were obtained from runs carried out at different anthracene levels between 1%(mass)and 10%(mass).The results showed that a uniform flake carbazole crystal obtained when using xylene and chlorobenzene under the FCC-1 mode with gradual cooling ***,fine flake crystals grown under shock cooling of FCC-2 *** is beneficial to improving the purity of carbazole with chlorobenzene as solvent under cooling mode of *** could promote the growth of carbazole in solution,and it has a significant influence on the purification of carbazole.

关键词： Separation Solvent crystallization Forced circulation cooling Anthracene Carbazole

Time analysis for aero-engine acoustic modes exploiting block sparsity

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Chinese Journal of Aeronautics 2024年第11期37卷 254-264页

作者： Zepeng li Baijie qiao Bi wen Yuanshi liU Xuefeng CHEN Andreas JAKOBSSON School of Mechanical Engineering Xi’an Jiaotong UniversityXi’an 710049China AECC Sichuan Gas Turbine Establishment Mianyang 621022China Department of Mathematical Statistics Lund UniversityLund 22100Sweden

Acoustic Mode Analysis(AMA)for aero-engines can offer valuable insights for the design of silent engines as well as for fault ***,this is done in the(spatial)Fourier domain,necessitating the use of multiple uniformly spaced microphones to ensure adequate *** works show that sub-Nyquist estimation is feasible using sparse reconstruction frameworks,although such modelling generally introduces an estimation bias that has to be compensated ***,there is a growing interest in monitoring mode amplitude over continuous time,as it can offer crucial insights for diagnosing operational *** this work,we introduce a Block Orthogonal Matching Pursuit(BOMP)method for continuous time mode analysis,exploiting the underlying structural sparsity of the signal ***,the(pseudo)‘0ànorm penalty is employed to induce sparsity in the wavenumber domain,whereas a block structure is imposed as a constraint to monitor the amplitude variation in the time *** effectiveness of the BOMP is evaluated using both numerical simulations and experimental measurements,indicating the proposed method's preferable performance as compared to the classic Least Absolute Shrinkage and Selection Operator(LASSO)and Orthogonal Matching Pursuit(OMP)methods.

关键词： Block sparsity Orthogonal matching pursuit Acoustic mode analysis Acoustic testing Sparse estimate

Enabling Highly Efficient k-Means Computations on the SW26010 Many-Core Processor of Sunway Taihulight

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Journal of Computer Science & Technology 2019年第1期34卷 77-93页

作者： Min li Chao Yang qiao Sun wen-Jing Ma wen-Long Cao Yu-Long Ao Institute of Software Chinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100049China School of Mathematical Sciences Peking UniversityBeijing 100871China Center for Data Science Peking UniversityBeijing 100871China peng Cheng Laboratory Shenzhen 518052China

With the advent of the big data era,the amounts of sampling data and the dimensions of data features are rapidly *** is highly desired to enable fast and efficient clustering of unlabeled samples based on feature similarities. As a fundamental primitive for data clustering,the k-means operation is receiving increasingly more attentions *** achieve high performance k-means computations on modern multi-core/many-core systems,we propose a matrix-based fused framework that can achieve high performance by conducting computations on a distance matrix and at the same time can improve the memory reuse through the fusion of the distance-matrix computation and the nearest centroids *** implement and optimize the parallel k-means algorithm on the SW26010 many-core processor,which is the major horsepower of Sunway *** particular,we design a task mapping strategy for load-balanced task distribution,a data sharing scheme to reduce the memory footprint and a register blocking strategy to increase the data *** techniques such as instruction reordering and double buffering are further applied to improve the sustained *** on block-size tuning and performance modeling are also *** show by experiments on both randomly generated and real-world datasets that our parallel implementation of k-means on SW26010 can sustain a double-precision performance of over 348.1 Gflops,which is 46.9% of the peak performance and 84%of the theoretical performance upper bound on a single core group,and can achieve a nearly ideal scalability to the whole SW26010 processor of four core *** comparisons with the previous state-of-the-art on both CPU and GPU are also provided to show the superiority of our optimized k-means kernel.

关键词： parallel k-means performance optimization SW26010 processor Sunway Taihulight

Corrosion Behavior of B_4C/6061Al Neutron Absorber Composite in Different H_3BO_3 Concentration Solutions

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Acta Metallurgica Sinica(English Letters) 2016年第11期29卷 1037-1046页

作者： Yu-li li wen-Xian Wang Hong-Sheng Chen Jun Zhou qiao-Chu Wu School of Materials Science and Engineering Taiyuan University of Technology Key Laboratory of Interface Science and Engineering in Advanced Materials Ministry of Education Taiyuan University of Technology Department of Mechanical Engineering Pennsylvania State University Erie The Behrend College

In this study, electrochemical corrosion tests, full-soak corrosion tests and associated microstructure analysis were conducted to investigate the corrosion behaviors of B4C/6061Al neutron absorber composites（NACs） manufactured by powder metallurgy method in solutions having different boric acid（H3BO3） concentrations（500, 2500 and 10,000 ppm）. In electrochemical corrosion tests, B4C/6061Al NACs demonstrate the highest（short-term） corrosion resistance in the 2500 ppm H3BO3 solution. While for full-soak corrosion tests, the B4C/6061Al NACs show the highest（long-term） corrosion resistance in the 500 ppm H3BO3 solution. This difference is found to be mainly due to the formation of different surface morphologies during these two different corrosion tests. As noticed, a layer of Al（OH）3was formed on the composite surface during full-soak corrosion tests, but it cannot be found in the electrochemical corrosion tests. The full-soak corrosion mechanism of the B4C/6061Al NACs in the H3BO3 solution is found to be primarily determined by the dynamic balance between the formation and dissolution rates of the oxide film, which is mainly controlled by the density of H~＋ ions in the solution.

关键词： B4C/6061Al NACs Powder metallurgy Electrochemical corrosion Full-soak corrosion

Dynamic Scaling of Ramified Clusters Formed on liquid Surfaces

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Communications in Theoretical Physics 2006年第2X期46卷 332-336页

作者： WU Feng-Min XU You-Sheng li qiao-wen College of Mathematics and Physics Zhejiang Normal University Jinhua 321004 China College of Science Zhejiang University of Technology Hangzhou 310014 China

A comprehensive simulation model -- deposition, diffusion, rotation, reaction and aggregation model is presented to simulate the formation processes of ramified clusters on liquid surfaces, where clusters can disuse and rotate easily. The mobility （including diffusion and rotation） of clusters is related to its mass, which is given by Dm = Dos^-γD and θm = θos^-γθ, respectively. The influence of the reaction probability on the kinetics and structure formation is included in the simulation model. We concentrate on revealing dynamic scaling during ramified cluster formation. For this purpose, the time evolution of the cluster density and the weight-average cluster size as well as the cluster-size distribution scaling function at different time are determined for various conditions. The dependence of the cluster density on the deposition flux and time-dependence of fractal dimension are also investigated. The obtained results are helpful in understanding the formation of clusters or thin film growth on liquid surfaces.

关键词： dynamic scaling liquid surface ramified cluster kinetic Monte-Carlo simulation

Design,Synthesis and Electrochromic Properties of Anthraquinone Imide-based Donor-acceptor Type of Near Infrared Chromophores

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Chemical Research in Chinese Universities 2012年第2期28卷 239-241页

作者： qiao wen-qiang Key Laboratory of Materials Behaviors and Evaluation Technology in Space Environments Harbin Institute of TechnologyHarbin 150001P.R.China

A new series of near infrared（NIR） electrochromic anthraquinone imides containing a triphenylamine moiety as an electron donor was synthesized and their electrochemical and spectroelectrochemical behavior were *** results show that the new anthraquinone imides are redox active which can be reduced electrochemically from the neutral state to the radical anion form that absorbs in a range of 700―1200 nm.

关键词： Anthraquinone imide Triphenylamine moiety Near infrared electrochromism

Impact of agricultural intensification on soil organic carbon＂ A study using DNDC in Huantai County, Shandong Province, China

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Journal of Integrative Agriculture 2016年第6期15卷 1364-1375页

作者： liAO Yan WU wen-liang MENG Fan-qiao li Hu College of Resources and Environmental Sciences China Agricultural University/Beijing Key Laboratory of Biodiversity and Organic Farming Beijing 100193 P.R. China Chinese Academy of Agricultural Engineering Beijing 100125 P.R. China Institute of Agricultural Resources and Regional Planning Chinese Academy of Agricultural Sciences Beijing 100081 P.R.China

Using the biogeochemical model den itrification/decomposition （DN DC）, the dynamic changes of soil organic carbon （SOC） of farmland from the 1980s to 2030s were investigated in Huantai County, a typical intensive agricultural region in the Huang- Huai-Hai Plain of China. Prior to modelling, validation of the DNDC model against field data sets of SOC from Quzhou Experimental Station in the Huang-Huai-Hai Plain was conducted at the site scale. We compared the simulated results with the observed SOC in Huantai County during 1982-2011 under two different classification methods of simulation unit （the first method integrated soil type and land use of Huantai County to form the overlapped modeling units; the second selected the 11 administrative towns as the modeling units）, and achieved a high accuracy in the model simulation with the improvement of the model parameters. Regional SOC （0-20 cm） density and stocks for Huantai County in the years 2012-2031 were predicted under different scenarios of farming management. Compared with current management practices, optimized fertilization （20% decrease of mineral N）, crop straw incorporation （90%） and appropriate animal manure input （40 kg N ha-1 yr-1） could achieve the highest level of SOC density （56.8% higher than 2011） in the period of 2012-2031. The research highlighted the importance of crop straw incorporation, optimized N fertilization and integration of crop production with ani- mal husbandry on the farmland carbon sequestration for maintaining a high land productivity in the Huang-Huai-Hai Plain.

关键词： agricultural intensification soil organic carbon DNDC nitrogen fertilizer straw incorporation animal manure