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Chinese Journal of Aeronautics 2020年第6期33卷 1799-1811页

作者： Chunmei liu Yuli liu Research&Development Institute of Northwestern Polytechnical University in Shenzhen Shenzhen 518057China State Key Laboratory of Solidification Processing School of Materials Science and EngineeringNorthwestern Polytechnical UniversityXi'an 710072China

The bent double-ridged rectangular tube(DRRT)with high forming quality is helpful to improve the microwave transmission *** reducing the cross-sectional deformation in the H-typed bending process,in addition to using rigid mandrel to support the inside of tube,ridge groove fillers are also added to restrict the deformation of ridge *** of the change of stress and strain state of bent tube in bending,rigid mandrel retracting and specially twicespringback stages,and the springback of fillers,the cross-sectional deformation of tube in each stage may be ***,based on the ABAQUS platform,the finite element models(FEM)for H-typed bending,mandrel retracting and twice-springback stages of H96 DRRT with fillers were established and *** is found that,for the height and width deformation of tube and spacing deformation of ridge grooves,retraction of mandrel can make the distribution of these deformations more uniform along the bending *** first springback can reduce these deformations significantly,which should be *** the second springback only increases them by less amount,which can be *** smaller height deformation of ridge groove and filler can be neglected.

关键词： Cross-sectional deformation FE simulation H96 double-ridged rectangular tube H-typed rotary draw bending Ridge groove fillers Twice-springback stage

Stability of QTL Across Environments and QTL-by-Environment Interactions for Plant and Ear Height in Maize

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Agricultural Sciences in China 2010年第10期9卷 1400-1412页

作者： ZHANG Yan LI Yong-xiang WANG Wang liu zhi-zhai liu Cheng PENG Bo TAN Wei-wei WANG Di SHI Yun-su SUN Bao-cheng SONG Yan-chun WANG Tian-yu LI Yu Institute of Crop Sciences Chinese Academy of Agricultural Sciences Beijing 100081 P.R.China Institute of Food Crops Xinjiang Academy of Agricultural Sciences Urumqi 830000 P.R.China Maize Research Institute Southwest University Chongqing 400716 P.R.China

Better understanding of genotype-by-environment interaction （GEI） is expected to provide a solid foundation for genetic improvement of crop productivity especially under drought-prone environments. To elucidate the genetic basis of the plant and ear height, 2 F2：3 populations were derived from the crosses of Qi 319 × Huangzaosi （Q/H） and Ye 478 × Huangzaosi （Y/H） with 230 and 235 families, respectively, and their parents were evaluated under 3 diverse environments in Henan, Beijing, and Xinjiang, China during the year of 2007 and 2008, and all the lines were also evaluated under water stress environment. The mapping results showed that a total of 21 and 12 QTLs were identified for plant height in the Q/H and Y/H population, respectively, and 24 and 13 QTLs for ear height, respectively. About 56 and 73% of the QTLs for 2 traits did not present significant QTL-by-environment interaction （QE1） in the normal joint analyses for Q/H and Y/H population, respectively, and about 73% of the QTLs detected did not show significant QEI according to joint analyses for stress condition in Q/H. Most of the detected major QTLs exhibited high stability across different environments. Besides, several major QTLs were detected with large and consistent effect under normal condition （Chr. 6 and 7 in Q/H; Chr. 1, 3 and 9 in Y/H）, or across 2 water regimes （Chr. 1, 8 and 10 for in Q/H）. There were several constitutive QTLs （3 for Q/H and 1 for Y/H） with no or minor QTL-by-environment for the 2 populations. Finally, we found several genomic regions （Chr. 1, 10, etc.） to be co-located across the populations, which could provide useful reference for genetic improvement of these traits in maize breeding programs. Comparative genomic analysis revealed that 3 genes/genetic segments associated with plant height in rice were orthologous to these 3 identified genomic regions carrying the major QTLs for plant and ear height on Chr. 1, 6, and 8, respectively.

关键词： maize (Zea mays L.) stability QTL QTL-by-environment plant height ear height

Clustering of Non-communicable Diseases Risk Factors in Healthy Adults Aged 35 Years and Older in Shenzhen,China

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Biomedical and Environmental Sciences 2017年第9期30卷 661-666页

作者： NI Wen Qing XU Jian liu Min liu Xiao Li YANG Li Chen ZHUO zhi Peng YUAN Xue Li SONG Jin Ping CHI Hong Shan BAI Ya Min Shenzhen Center for Chronic Disease Control Shenzhen 528020GuangdongChina Center for Chronic and Non-communicable Diseases Control and Prevention Chinese Center for Disease Control and PreventionBeijing 100050China Key laboratory of Trace Element Nutrition of the Ministry of Health National Institute of Nutrition for HealthChinese Center for Disease Control and PreventionBeijing 100050China

We assessed the prevalence of non‐ communicable diseases（NCDs） risk factors with a focus on their clustering among healthy adults in Shenzhen, China. Data from the 2011 China Health and Nutrition Survey, comprising a regionally representative sample of 806 healthy adults aged 35 years or older, were obtained to determine the prevalence of five risk factors for NCDs. The prevalence of current smoking, central obesity, impaired fasting glucose, borderline hypertension, and borderline high total cholesterol was 19.97%, 28.29%, 4.47%, 10.55%, and 36.10%, respectively. A total 63.77% of participants had at least one risk factor. Upon examination of risk factor clustering, we observed that 7.57% of participants had at least three risk factors. Using this threshold as a cutoff, clustering of risk factors was associated with sex [odds ratio（OR） = 3.336, 95% confidence interval（CI）： 1.782 to 6.246], physical activity（OR = 1.913, 95% CI： 1.009 to 3.628）, and BMI（OR = 7.376, 95% CI： 3.812 to 14.270）. The prevalence of risk factors for NCDs is fairly high among healthy adults in Shenzhen, with a clustering tendency.

关键词： Non‐communicable diseases Healthy adults Prevalence Risk factors

Differential Cross Sections for the H＋D2O→HD＋OD Reaction： a Full Dimensional State-to-State Quantum Dynamics Study

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Chinese Journal of Chemical Physics 2017年第1期30卷 16-24,I0001页

作者： zhi-qiang Zhao Shu liu Dong H. Zhang State Key Laboratory of Molecular Reaction Dynamics and Center for Theoretical Computational Chemistry Dalian Institute of Chemical Physics Chinese Academy of Sciences Dalian 116023 China University of Chinese Academy of Sciences Beijing 100049 China

The time-dependent wave-packet method was employed to calculate the first full-dimensional state-to-state differential cross sections （DCS） for the title reaction with D2O in the ground and the first symmetric （100） and asymmetric stretching （001） excited states. The calculated DCSs for these three initial states are strongly backward peaked at low collision energies. With the increase of collision energy, these DCSs become increasingly broader with the peak position shifting gradually to a smaller angle, consistent with the fact that the title reaction is a direct reaction via an abstraction mechanism. It is found that the （100） and （001） states not only have roughly the same integral cross sections, but also have essentially identical DCS, which are very close to that for the ground state at the same total energy of reaction. The reaction produces a small fraction of OD in the v=1 state, with the population close to the relative reactivity between the ground and vibrationally excited states, therefore confirming the experimental result of Zare et al. and the local mode picture [J. Phys. Chem. 97, 2204 （1993）]. Unexpectedly, the stretching excitation reduces the rotation excitation of product HD at the same total energy.

关键词： State-to-state Differential cross section Time-dependent wave-packet method

Better use of experience from other reservoirs for accurate production forecasting by learn-to-learn method

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Petroleum Science 2024年第1期21卷 716-728页

作者： Hao-Chen Wang Kai Zhang nancy Chen Wen-Sheng Zhou Chen liu Ji-Fu Wang Li-Ming Zhang zhi-Gang Yu Shi-Ti Cui Mei-Chun Yang China University of Petroleum(East China) 66 Changjiang West RoadQingdao West Coast New AreaQingdao266580ShandongChina University of Calgary 2500 University Dr NWCalgaryT2N 1N4AlbertaCanada Qingdao University of Technology Qingdao266071ShandongChina State Key Laboratory of Offshore Oil Exploitation Beijing100028China CNOOC Research Institute Ltd. Beijing100028China CNPC Tarim Oilfield Branch Company Korla841000XinjiangChina national Engineering Laboratory for Exploration and Development of Low-Permeability Oil and Gas Fields Xi'an710000ShaanxiChina Sinopec Matrix Co. LTDQingdao266000ShandongChina

To assess whether a development strategy will be profitable enough,production forecasting is a crucial and difficult step in the *** development history of other reservoirs in the same class tends to be studied to make predictions ***,the permeability field,well patterns,and development regime must all be similar for two reservoirs to be considered in the same *** results in very few available experiences from other reservoirs even though there is a lot of historical information on numerous reservoirs because it is difficult to find such similar *** paper proposes a learn-to-learn method,which can better utilize a vast amount of historical data from various ***,the proposed method first learns how to learn samples before directly learning rules in ***,by utilizing gradients from networks with independent parameters and copied structure in each class of reservoirs,the proposed network obtains the optimal shared initial parameters which are regarded as transferable information across different *** on that,the network is able to predict future production indices for the target reservoir by only training with very limited samples collected from reservoirs in the same *** cases further demonstrate its superiority in accuracy to other widely-used network methods.

关键词： Production forecasting Multiple patterns Few-shot learning Transfer learning

TGF-β1 signal pathway in the regulation of inflammation in patients with atrial fibrillation

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Asian Pacific Journal of Tropical Medicine 2013年第12期6卷 999-1003页

作者： Ye Erbo lati.Ali Mira Muhuyati Wu-Hong Lu Peng-Yi He zhi-Qiang liu Yu-Chun Yang Comprehensive Cardiology Department First Affiliated Hospital of Xinjiang Medical University Cardiac Institute First Affiliated Hospital of Xinjiang Medical University

Objective:To observe the expression changes of inflammatory markers TGF-β1,Smad3 and IL-6 in patients with atrial fibrillation(AF),and to explore the significance of TGF-β1 signaling pathway in the structural remodeling of ***:The expression of TGF-β1,Smad3 and IL-6 in 50 cases with AF and 30 normal cases were detected by RT-PCR and ***:The TGF-β1,Smad3 and IL-6 mRna and protein expression levels in patients with AF were significantly higher than that in the control group(P0.05).The TGF-β1mRna expression in the≥50 years subgroup was significantly higher than that in thena(r=0.823).Conclusions:AF is associated with inflammation,and the inflammation is also involved in the fibrillation and sustain of *** TGF-β1 signal pathway may be involved in the process of atrial structural remodeling in patients with AF,and iss related with the occurrence and maintenance of AF.

关键词： Atrial fibrillation Transforming growth factor β1 Signal transduction Inflammation

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SCR废催化剂中钒和钨常温常压浸出新工艺

东北大学学报（自然科学版） 2022年第3期43卷 414-422,430页

作者：刘娜娜徐新阳陈熙刘源东北大学资源与土木工程学院辽宁沈阳110819

基于SEM-EDS,XPS,获得常温常压下SCR废催化剂二段式浸出新工艺,采用Box-Behnken试验设计(BBD)方法分段研究了各因素及其交互作用对钒和钨浸出影响,得到了最佳工艺参数,并分析了浸出机理.结果表明,采用二段式浸出工艺,各因素影响顺序为:... 详细信息

基于SEM-EDS,XPS,获得常温常压下SCR废催化剂二段式浸出新工艺,采用Box-Behnken试验设计(BBD)方法分段研究了各因素及其交互作用对钒和钨浸出影响,得到了最佳工艺参数,并分析了浸出机理.结果表明,采用二段式浸出工艺,各因素影响顺序为:第一阶段提钒,反应温度>浸出时间>浸出剂浓度;第二阶段提钨,反应温度>浸出剂浓度>浸出时间.第一段当naOH浓度0.5 mol·L^(-1),60℃下反应10 min时,钒浸出率为(61.40±0.24)%;第二段当naOH浓度2.5 mol·L^(-1),90℃下反应50 min时,钨浸出率为(55.73±0.22)%.废催化剂中钒以V_(2)O_(3),VOSO_(4)和V_(2)O_(5)形式存在,与naOH反应生成可溶性钒酸盐,少部分V_(2)O_(3)和V_(2)O_(5)在反应过程中生成VOSO_(4)后溶解.

关键词： SCR废催化剂 Box-Behnken试验设计 SEM-EDS XPS

Effect of stand age and individual growth on seed germination of Populus euphratica in the Ejina Oasis, China

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Forestry Studies in China 2011年第3期13卷 183-188页

作者： liu Qian-wen HAO Peng LI Jing-wen TAN zhi-gang Amugulang LUO Jing-yu College of Forestry Beijing Forestry University Beijing 100083 P. R. China Ejina Banner Forestry Bureau Inner Mongolia 735400 P. R. China

We conducted an investigation into the germination of seeds from individual Populus euphratica trees of different ages and growing conditions in order to discover the effect of intraspecific factors on their sexual reproduction in the Ejina Oasis, Inner Mongolia of China. By carrying out germination experiments of seeds collected at various seed dispersal periods, we found that P. euphratica seeds could be germinated intensively within 8 h from the start of the experiments, that the germination percentage decreased with the time of seed dispersal and that the germination percentage of seeds collected at the early stage of seed dispersal was 1.86 times greater than those collected at the final stage. There was no significant difference in the germination percentage or the germination index between seeds collected at the early and peak stages. The vitality of seeds from the mature forest was clearly higher than that of the half-mature and near-mature forests. The rate of branch dieback only affected seed germination at the final stage. Therefore, we conclude that the mature P. euphratica forest was the main contributor to reproduction. The results show that both the time of seed harvest and stand age were the main factors affecting the germination percentage of P. euphratica seeds.

关键词： sexual regeneration seed vitality Populus euphratica Ejina Oasis

One-step preparation of modified photothermal-driven melamine foam with gradient wettability for oil-waterseparation

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Frontiers of Materials Science 2024年第3期18卷 71-82页

作者： Mengdan Jia Mei-Chen Lin Hai-Tao Ren Bing-Chiuan Shiu Ching-Wen Lou zhi-Ke Wang Li-Yan liu Ting-Ting Li Innovation Platform of Intelligent and Energy-Saving Textiles School of Textile Science and EngineeringTiangongUniversityTianjin 300387China Tianjin and Ministry of Education Key Laboratory for Advanced Textile Composite Materials Tiangong UniversityTianjin 300387China Department of Biomedical Engineering College of Biomedical EngineeringChina Medical UniversityTaichung 404333China College of Material and Chemical Engineering Minjiang UniversityFuzhou 350108China Department of Bioinformatics and Medical Engineering AsiaUniversityTaichung 413305China Department of Medical Research China Medical University HospitalChina Medical UniversityTaichung 404333China Advanced Medical Care and Protection Technology Research Center College of Textile and ClothingQingdaoUniversityQingdao 266071China Department of Textile and Clothing Shandong Vocational College of Science and TechnologyWeifang 261053China

The absorption of high-viscosity oil by traditional oil absorbing materials has always been a *** there is an urgent need to solve the problem of slow absorption of high-viscosity *** this work,an emulsion composed of polydimethylsiloxane(PDMS),carbon black(CB)and waterborne polyurethane(solid content 40%)was sprayed on the melamine foam(MF).After volatilization of organic solvents,the photothermal material CB was fixed on the MF framework,making it *** raising the temperature of the modified foam to accelerate the internal thermal movement of high-viscosity oil molecules around the foam,intermolecular forces are reduced,thereby accelerating the separation *** absorption capacity of this modified MF towards organic solvents and oil is up to 79 times its own *** addition,the mechanical properties of the modified foam are improved to a certain extent,more conducive to the continuous oil-water *** photothermal absorption material provides ideas for the rapid removal of high-viscosity oil,heavy oil,etc.

关键词： photothermal high-viscosity oil oil-water separation

A study of chitosan blend film as a carrier of corneal endothelial cells

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High Technology Letters 2008年第1期14卷 98-103页

作者：位晓娟 liu Wanshun Han Baoqin Li na College of Marine Life Science Ocean University of China Qingdao 266003 P.R. China Tongren Ophthalmology Hospital of Beiiing Beijing 100730 P.R. China

In order to evaluate the cytocompatibility and biocompatibility of a new kind of chitosan blend film as a carrier of corneal endothelial cell, rabbit corneal endothelial cells cultured in vitro were breeded onto the film. After a cell monolayer formed, the scanning electron micrography was performed. After inplanted into anterior chamber, slit lamp observation, thickness metering, specular microscopy and HE staining were performed at random time after operation to evaluate the biocompatibility. Inflmmnation in anterior, thickness of cornea, cell density, hexagonality and cell size of the surgical cornea were taken as the indexes of biocompatibility. The cultured cells exhibited a confluent monolayer 10 days after incubation, which proved the satisfactory cytocompatibility of this film. Biocompatibility assay results suggested the implantation feasibility of the film as a carder of corneal endothelial cells.

关键词： chitosan blend film carrier corneal endothelial cells