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Acta Metallurgica Sinica(English Letters) 2022年第10期35卷 1673-1687页

作者： Zhen Lu chengcai zhang Nana Deng Haiping Zhou Ruirui Fang Kuidong Gao Yukuo Su Hongbin zhang School of Materials Science and Engineering Harbin Institute of TechnologyHarbin150001China College of Mechanical and Electronic Engineering Shandong University of Science and TechnologyQingdao266590China Jier Machine-Tool Group Co.Ltd Jinan250022China

The influence of selective laser melting(SLM)process parameters on the microstructure and mechanical properties of a typical Ni-based superalloy was researched.The optimum parameters of P=170 W,V=0.8 m/s were determined,under which the SLMed samples exhibited both the largest relative density of 99.57%and the best mechanical properties,including the microhardness(329.3±3.8 HV),yield strength(726±8.1 MPa),ultimate tensile strength(900±5.9 MPa)and elongation((31.9±0.24)%).The average grain size ranges of SLMed samples are from 15.2 to 17.4μm,with a typical mixed grain structure.Owing to the high cooling rate and remelting during SLM process,a large number of low-angle grain boundaries(LAGBs),dislocations and sub-grains were formed,and the fraction of LAGBs reached above 65%.At the same time,the content of low-Σcoincidence site lattice(CSL)boundaries was mostly less than 1%,while there was almost noγ′phase precipitated in the matrix.The texture of SLMed samples was weak,and there was no obvious preferred growth direction.Combining with the microstructure characterization,both grain refinement strengthening and dislocation strengthening were considered as the main strengthening mechanisms.Moreover,the fracture mechanism of the optimum sample belonged to ductile fracture.

关键词： Selective laser melting Ni-based superalloy Relative density Microstructure Mechanical property

小曲率路面车辆差动转向与横摆稳定性集成控制研究

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机械科学与技术 2024年第3期43卷 373-379页

作者：王重磊刘珣黄元毅张成才汪怡平武汉理工大学汽车工程学院武汉430070 武汉理工大学现代汽车零部件技术湖北省重点实验室武汉430070 上汽通用五菱汽车股份有限公司广西柳州545007

为减小车辆在前轮转向系统失效的负面影响,保证转向系统的瞬态控制性能,本文提出差动转向控制与横向稳定性控制相结合的控制方法,通过调节左右轮毂电机转矩形成横摆力矩,实现对系统完全失效车辆的转向控制与横向稳定性控制。首先设计基... 详细信息

为减小车辆在前轮转向系统失效的负面影响,保证转向系统的瞬态控制性能,本文提出差动转向控制与横向稳定性控制相结合的控制方法,通过调节左右轮毂电机转矩形成横摆力矩,实现对系统完全失效车辆的转向控制与横向稳定性控制。首先设计基于LQR差动转向控制器跟踪参考前轮转角与参考横摆角速度,保证车辆轨迹跟踪能力,然后设计基于模糊PID横向稳定性控制器跟踪参考质心侧偏角,保证车辆横摆稳定性,两者构成双闭环控制系统将控制量最终转化为横摆力矩,实现车辆的集成控制。最后通过Simulink-Carsim联合仿真验证,仿真结果表明差动转向系统能够在前轮转向系统失效情况下实现车辆转向控制,并在横向稳定性控制系统的作用下有效地提高了车辆瞬态控制性能。

关键词：电动汽车轮毂电机差动转向轨迹跟踪横向稳定性

Lithiophilic Li-Si alloy-solid electrolyte interface enabled by high-concentration dual salt-reinforced quasi-solid-state electrolyte

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Journal of Energy Chemistry 2024年第8期95卷 216-230页

作者： Yuanxing zhang Ling zhang Zhiguang Zhao Yuxiang zhang Jingwen Cui chengcai Liu Daobin Mu Yuefeng Su Borong Wu Feng Wu School of Materials Science and Engineering Beijing Institute of Technology Chongqing Innovation Center Beijing Institute of Technology Collaborative Innovation Center of Electric Vehicles in Beijing

Solid polymer electrolytes（SPEs） are urgently required to achieve practical solid-state lithium metal batteries（LMBs） and lithium-ion batteries（LIBs）,Herein,we proposed a mechanism for modulating interfacial conduction and anode interfaces in high-concentration SPEs by LiDFBOP.Optimized electrolyte exhibits superior ionic conductivity and remarkable interface compatibility with salt-rich clusters:（1）polymer-plastic crystal electrolyte（P-PCE,TPU-SN matrix） dissociates ion pairs to facilitate Li+transport in the electrolyte and regulates Li+diffusion in the SEI.The crosslinking structure of the matrix compensates for the loss of mechanical strength at high-salt concentrations;（2） dual-anion TFSI-_n-DFBOP-min the Li+solvation sheath facilitates facile Li+desolvation and formation of salt-rich clusters and is conducive to the formation of Li conductive segments of TPU-SN matrix;（3） theoretical calculations indicate that the decomposition products of LiDFBOP form SEI with lower binding energy with LiF in the SN system,thereby enhancing the interfacial electrochemical redox kinetics of SPE and creating a solid interface SEI layer rich in LiF.As a result,the optimized electrolyte exhibits an excellent ionic conductivity of9.31 × 10-4S cm-1at 30℃ and a broadened electrochemical stability up to 4.73 V.The designed electrolyte effectively prevents the formation of Li dendrites in Li symmetric cells for over 6500 h at0.1 mA cm-2.The specific Li-Si alloy-solid state half-cell capacity shows 711.6 mAh g-1after 60 cycles at 0.3 A g-1. Excellent rate performance and cycling stability are achieved for these solid-state batteries with Li-Si alloy anodes and NCM 811 cathodes.NCM 811‖ Prelithiated silicon-based anode solid-state cell delivers a discharge capacity of 195.55 mAh g-1and a capacity retention of 97.8% after 120 cycles.NCM 811‖Li solid-state cell also delivers capacity retention of 84.2% after 450 cycles.

关键词： Li-Si alloy anode Prelithiation SEI layer Solid-state electrolyte

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薄壳山核桃实生单株坚果品质性状评价

福建林业 2024年第3期39卷 33-36页

作者：邵慰忠张成才任华东常君姚小华王开良张爱君中国林业科学研究院亚热带林业研究所浙江杭州311400 浙江省建德市林业局浙江建德311600

对薄壳山核桃36个单株和10个品种的坚果及品质性状指标进行了测定与评价。结果表明:实生单株在坚果形态和品质性状方面均表现出显著的差异,实生单株坚果的形态表现均低于品种,但筛选出单果重1.8 g、仁重0.70 g和出仁率30.03%的极端种质... 详细信息

对薄壳山核桃36个单株和10个品种的坚果及品质性状指标进行了测定与评价。结果表明:实生单株在坚果形态和品质性状方面均表现出显著的差异,实生单株坚果的形态表现均低于品种,但筛选出单果重1.8 g、仁重0.70 g和出仁率30.03%的极端种质,分别仅为品种中最低值的35.29%、31.53%和73.28%。在品质性状方面,筛选出亚油酸(37.80%)、缩合单宁(27.99 mg·g^(-1))、黄酮(56.1 g·kg-1)和鞣花酸(8111.11μg·g^(-1))含量较高的种质,分别达到最高含量品种的1.70、1.80、1.94和3.63倍。相关性分析显示,油酸与亚油酸和亚麻酸呈极显著负相关,单果重与仁重、果径、果高呈极显著正相关。主成分分析表明,10个品种与36个单株明显分为两类,其中仁重、果径、单果重、出仁率、果高和缩合单宁含量是区分这两类样本的关键指标。

关键词：薄壳山核桃坚果实生单株品质性状

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Metal-organic frameworks and their composites for advanced lithium-ion batteries:Synthesis,progress and prospects

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Journal of Energy Chemistry 2024年第2期89卷 449-470,I0011页

作者： chengcai Liu Borong Wu Tao Liu Yuanxing zhang Jingwen Cui Lingjun Huang Guoqiang Tan Ling zhang Yuefeng Su Feng Wu School of Material Science and Engineering Beijing Institute of TechnologyBeijing 100081China Chonging Innovation Center Beijing Institute of TechnologyChongqing 401120China Collaborative Innovation Center of Electric Vehicles in Beijing Beijing 100081China

Metal-organic frameworks(MOFs)are among the most promising materials for lithium-ion batteries(LIBs)owing to their high surface area,periodic porosity,adjustable pore size,and controllable chemical composition.For instance,their unique porous structures promote electrolyte penetration,ions transport,and make them ideal for battery separators.Regulating the chemical composition of MOF can introduce more active sites for electrochemical reactions.Therefore,MOFs and their related composites have been extensively and thoroughly explored for LIBs.However,the reported reviews solely include the applications of MOFs in the electrode materials of LIBs and rarely involve other aspects.A systematic review of the application of MOFs in LIBs is essential for understanding the mechanism of MOFs and better designing related MOFs battery materials.This review systematically evaluates the latest developments in pristine MOFs and MOF composites for LIB applications,including MOFs as the main materials(anode,cathode,separators,and electrolytes)to auxiliary materials(coating layers and additives for electrodes).Furthermore,the synthesis,modification methods,challenges,and prospects for the application of MOFs in LIBs are discussed.

关键词： Metal-organic frameworks Electrodes Electrolytes Separators Lithium-ion batteries

Effects of pneumoperitoneum of laparoscopic cholecystectomy on the coagulation system of patients： a prospective observational study

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Chinese Medical Journal 2014年第14期127卷 2599-2604页

作者： Amin Buhe zhang chengcai Yan Wei Sun Zhipeng zhang Yankai Du Dexiao Gong Ke Capital Med Univ Dept Gen Surg Beijing Shijitan Hosp Beijing 100038 Peoples R China Zibo Cent Hosp Dept Laparoscopy Surg Zibo 255036 Shandong Peoples R China

BacKground Laparoscopic cholecystectomy has been widely used in clinical practice during the recent decades; however, the effects of pneumoperitoneum and the surgery on the coagulation system are largely unknown. This clinical study aimed to observe any possible effects of pneumoperitoneum and the surgery on the coagulation system of patients. Methods This was a prospective observational study. The inclusion criteria included （1） patients with chronic cholecystitis and/or cholecystic polyps and （2） patients in the relief stage of acute cholecystitis. The exclusion criteria included （1） patients in the episodic stage of acute cholecystitis and those complicated with cholangiolithiasis; （2） patients with concomitant hematologic diseases, damages to the liver function, malignant tumors or immune system diseases, or patients complicated with thrombotic or hemorrhagic disorders; and （3） patients who had taken anticoagulant medication within a week before surgery. Fifty patients who were hospitalized into our department for elective laparoscopic cholecystectomy between November 2011 and February 2013 were eligible and enrolled into this study. Of the 50 patients, 22 were male and 28 female. The age of the patients ranged from 29 to 78 （mean 56.7±11.5） years. The surgery for each of the 50 patients was performed with the same equipment and conditions. The surgeries for all the patients were performed under general anesthesia with the patients in a 30-degree head-up tilted posture, and the pressure of pneumoperitoneum was maintained at 13 mmHg. Venous blood specimens were taken from each patient before and at the end of pneumoperitoneum （i.e., 0 hour after surgery） and at 8 hours after surgery for determination of prothrombin time （PT）, activated partial thromboplastin time （APTT）, fibrinogen （Fib）, thrombin time （TT）, and D-dimer （DD）. The results of the determinations of these parameters were compared. Results （1） All the patients recovered well without any complications. （2） The pre-pneumoperitoneum values of the para

关键词： pneumoperitoneum cholecystectomy laparoscopic coagulation system

Net effect of air pollution controls on health risk in the Beijing-Tianjin-Hebei region during the 2022 winter Olympics and Paralympics

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Journal of Environmental Sciences 2024年第1期135卷 560-569页

作者： Changqing Lin Peter K.K.Louie Alexis K.H.Lau Jimmy C.H.Fung Zibing Yuan Minghui Tao Xuguo zhang Md.Shakhaoat Hossain chengcai Li Xiang Qian Lao Division of Environment and Sustainability The Hong Kong University of Science and TechnologyHong KongChina Environmental Protection Department Hong Kong Government SARHong KongChina Department of Civil and Environmental Engineering The Hong Kong University of Science and TechnologyHong KongChina Guangdong-Hongkong-Macao Joint Laboratory of Collaborative Innovation for Environmental Quality The Hong Kong University of Science and TechnologyHong KongChina Department of Mathematics The Hong Kong University of Science and TechnologyHong KongChina School of Environment and Energy South China University of TechnologyGuangzhou 510006China Hubei Key Laboratory of Critical Zone Evolution School of Geography and Information EngineeringChina University of GeosciencesWuhan 430074China Department of Public Health and Informatics Jahangirnagar UniversityDhaka 1342Bangladesh Department of Atmospheric and Oceanic Sciences School of PhysicsPeking UniversityBeijing 100871China Jockey Club School of Public Health and Primary Care The Chinese University of Hong KongHong KongChina

Due to the non-linearity in ozone(O_(3))formation,reducing the emission of nitrogen oxides(NO_(x))may increase O_(3) concentration.Given the counteractive O_(3) response to NO_(x) reduction,overall impact of air pollution controls can be ambiguous when the assessments focus on the changes in pollutant concentrations.In this study,a risk-based method was used to gauge the net effect of air pollution controls on mortality risk in the Beijing–Tianjin–Hebei(BTH)region during the 2022 Winter Olympics and Paralympics(WOP).This mega-event presents a unique opportunity to investigate the efficacy of deep cuts in pollutant emissions.Results show that O_(3) concentrations greatly increased as nitrogen dioxide(NO_(2))concentrations decreased in the BTH.Due to the active photochemical formations,O_(3) became the dominant pollutant that affected human health during the WOP.Despite the substantial O_(3) increases,the health benefits of NO_(2) reductions overwhelmed the adverse health effects of O_(3) increases in most regions of the BTH(at 81 out of 112 stations).After considering the impacts of particulate matter,the integrated health risk of air pollution mixtures declined almost everywhere in the BTH.Our results underscore the great necessity of changing the assessment paradigm of pollution control from using concentration-based methods to using risk-based methods.Together with the carbon neutrality policy,stringent control of NO_(x)emission from combustion sources is a promising way to achieve synergistic control solutions for air pollution and climate change.

关键词： Ozone Nitrogen dioxide Health risk Carbon neutrality Mega-events

Crystal structure of cyanobacterial signal transduction protein PⅡ in complex with PipX

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Crystal structure of cyanobacterial signal transduction prot...

The OsWRKY72-OsAAT30/OsGSTU26 module mediates reactive oxygen species scavenging to drive heterosis for salt tolerance in hybrid rice

中国生物化学与分子生物学会第十届会员代表大会暨全国学术...

作者： Mengxi Zhao Yongliang Jiang Boying Xu Yuxing Chen chengcai zhang Congzhao Zhou Hefei National Laboratory for Physical Sciences at Microscale and School of Life Sciences University of Science and Technology of China Aix-Marseille Universite and Laboratoire de Chimie Bacterienne Unites Propres de Recherche 9043Centre National de la Recherche Scientifique31 Chemin Joseph Aiguier13402 Marseille Cedex 20France

P proteins are signal transducers which are highly conserved in bacteria,nitrogen-fixating archaea and plants.They have a large flexible loop,named T-loop,which can adopt different conformations by covalent modification or binding to different effectors,to regulate the functions of diverse partner proteins.The P partner PipX,first identified in unicellular cyanobacteria Synechococcus,exists exclusively in cyanobacteria.PipX also interacts with NtcA,the cyanobacterial global nitrogen regulator.Binding of Pand NtcA by PipX is mutually exclusive in a 2-oxoglutarate (2-OG)-dependent manner,that enables P to indirectly

关键词： cyanobacteria signal transducers PⅡ PipX 2-oxoglutarate

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Journal of Integrative Plant Biology 2024年第4期66卷 709-730页

作者： Citao Liu Bigang Mao Yanxia zhang Lei tian Biao Ma Zhuo Chen Zhongwei Wei Aifu Li Ye Shao Gongye Cheng Lingling Li Wenyu Li Di zhang Xiaoping Ding Jiangxiang Peng Yulin Peng Jiwai He Nenghui Ye Dingyang Yuan chengcai Chu Meijuan Duan Hunan Provincial Key Laboratory of Stress Biology College of AgricultureHunan Agricultural UniversityChangsha 410128China State Key Laboratory of Hybrid Rice Hunan Hybrid Rice Research CenterChangsha 410125China College of Agriculture South China Agricultural UniversityGuangzhou 510642China State Key Laboratory of Wheat and Maize Crop Science Center for Crop Genome EngineeringCollege of AgronomyHenan Agricultural UniversityZhengzhou 450002China College of Horticulture Fujian Agriculture and Forestry UniversityFuzhou 350002China Department of Computational Medicine and Bioinformatics University of MichiganAnn ArborMI 48109 USA Biobin Data Science Co. Ltd.Changsha 410221China

Hybrid rice(Oryza sativa)generally outperforms its inbred parents in yield and stress tolerance,a phenomenon termed heterosis,but the underlying mechanism is not completely understood.Here,we combined transcriptome,proteome,physiological,and heterosis analyses to examine the salt response of super hybrid rice Chaoyou1000(CY1000).In addition to surpassing the mean values for its two parents(mid-parent heterosis),CY1000 exhibited a higher reactive oxygen species scavenging ability than both its parents(over-parent heterosis or heterobeltiosis).Nonadditive expression and allele-specific gene expression assays showed that the glutathione S-transferase gene OsGSTU26 and the amino acid transporter gene OsAAT30 may have major roles in heterosis for salt tolerance,acting in an overdominant fashion in CY1000.Furthermore,we identified OsWRKY72 as a common transcription factor that binds and regulates OsGSTU26 and OsAAT30.The salt-sensitive phenotypes were associated with the OsWRKY72^(paternal)genotype or the OsAAT30^(maternal)genotype in core rice germplasm varieties.OsWRKY72^(paternal)specifically repressed the expression of OsGSTU26 under salt stress,leading to salinity sensitivity,while OsWRKY72^(maternal)specifically repressed OsAAT30,resulting in salinity tolerance.These results suggest that the OsWRKY72-OsAAT30/OsGSTU26 module may play an important role in heterosis for salt tolerance in an overdominant fashion in CY1000 hybrid rice,providing valuable clues to elucidate the mechanism of heterosis for salinity tolerance in hybrid rice.

关键词： allele-specific gene expression(ASE) heterosis hybrid rice nonadditive effect(NAE) salt tolerance transcriptome and proteome

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甘肃碧口话的特点及归属

语文研究 2005年第4期 63-64,F0003页

作者：张成材青海师范大学中文系西宁810008

文章介绍碧口话的声韵调并同成都话、兰州话进行比较,还对碧口话特字作了记音,最后得出结论,碧口话属于地道的四川话。

关键词：碧口话特点归属成都话兰州话