检索结果-南通市图书馆

通过基体晶粒和颗粒分布异质结构的调控协同提升AlN_(p)/Al复合材料的强度-塑性

在线全文

学校读者我要写书评

暂无评论

Transactions of Nonferrous Metals Society of China 2024年第4期34卷 1049-1064页

作者：陈玉瑶聂金凤范勇顾雷谢可伟刘相法赵永好南京理工大学材料科学与工程学院纳米异构材料中心南京210094 山东大学材料液固结构演变与加工教育部重点实验室济南250061

为了获得优异的强塑性能,采用液固反应结合后续的热机械处理方法制备了3种具有不同微观组织构型的异构AlNp/Al复合材料,详细研究了AlN颗粒分布和基体晶粒组织构型对拉伸强度和塑性的影响。结果表明,复合材料的强度和塑性同时提高。其中... 详细信息

为了获得优异的强塑性能,采用液固反应结合后续的热机械处理方法制备了3种具有不同微观组织构型的异构AlNp/Al复合材料,详细研究了AlN颗粒分布和基体晶粒组织构型对拉伸强度和塑性的影响。结果表明,复合材料的强度和塑性同时提高。其中,具有较弥散颗粒分布的Uniformed-AlNp/Al复合材料表现出优异的极限抗拉强度(~387 MPa)和断裂伸长率(~9.1%)。与其他文献报道的颗粒增强铝基复合材料相比,该复合材料具有较好的比强度和延展性组合。此外,计算了异质变形诱导(HDI)应力。结果表明,在Uniformed-AlNp/Al复合材料中,HDI应力显著增加。揭示了HDI应力在提高AlNp/Al复合材料的强度和塑性中起着至关重要的作用。

关键词： AlNp/Al复合材料拉伸强度塑性异质结构颗粒分布强化机制

Searching for^(76)Ge neutrinoless double beta decay with the CDEX-1B experiment

在线全文

学校读者我要写书评

暂无评论

Chinese Physics C 2024年第10期48卷 11-22页

作者： Bing-Tao Zhang jun-Zheng Wang Li-Tao Yang Qian Yue Ke-jun kang Yuan-Jing Li Hai-Peng An C.Greeshma Jian-Ping Chang Yun-Huan Chen Jian-Ping Cheng Wen-Han Dai Zhi Deng Chang-hao Fang Xin-Ping Geng Hui Gong Qiu-ju guo Xu-Yuan guo Li He Sheng-Ming He Jin-wei Hu Han-Xiong Huang Tu-Chen Huang Hai-Tao Jia Xi Jiang S.Karmakar hao-Bin Li Jian-Min Li Jin Li Qian-Yun Li Ren-Ming-Jie Li Xue-Qian Li Yu-Lan Li Yi-Fan Liang Bin Liao Fong-Kay Lin Shin-Ted Lin Jia-Xuan Liu Shu-Kui Liu Yan-dong Liu Yu Liu Yuan-Yuan Liu Zhong-Zhi Liu hao Ma Yu-Cai Mao Qi-Yuan nie Jin-Hua Ning Hui Pan Ning-Chun Qi Jie Ren Xi-Chao Ruan Ze She Manoj Kumar Singh Tian-Xi Sun Chang-Jian Tang wei-You Tang Yang Tian guang-Fu Wang Li Wang Qing Wang Yu-feng Wang Yun-Xiang Wang Henry-Tsz-King Wong Shi-Yong Wu Yu-Cheng Wu hao-Yang Xing Rui Xu Yin Xu Tao Xue Yu-Lu Yan Nan Yi Chun-Xu Yu Hai-jun Yu Jian-feng Yue Ming Zeng Zhi Zeng feng-Shou Zhang Lei Zhang Zhen-Hua Zhang Zhen-Yu Zhang kang-kang Zhao Ming-Gang Zhao Ji-Fang Zhou Zu-Ying Zhou Jing-jun Zhou Key Laboratory of Particle and Radiation Imaging(Ministry of Education)and Department of Engineering Physics Tsinghua UniversityBeijing 100084 Department of Physics Tsinghua UniversityBeijing 100084 Institute of Physics Academia SinicaTaipei 11529 NUCTECH Company Beijing 100084 YaLong River Hydropower Development Company Chengdu 610051 College of Nuclear Science and Technology Beijing Normal UniversityBeijing 100875 College of Physics Sichuan UniversityChengdu 610065 School of Physics Peking UniversityBeijing 100871 Department of Nuclear Physics China Institute of Atomic EnergyBeijing 102413 Sino-French Institute of Nuclear and Technology Sun Yat-sen UniversityZhuhai 519082 School of Physics Nankai UniversityTianjin 300071 Department of Physics Banaras Hindu UniversityVaranasi 221005 Department of Physics Beijing Normal UniversityBeijing 100875

We operated a p-type point contact high purity germanium(PPCGe)detector(CDEX-1B,1.008 kg)in the China Jinping Underground Laboratory(CJPL)for 500.3 days to search for neutrinoless double beta(0νββ)decay of^(76)Ge.A total of 504.3 kg⋅day effective exposure data was *** anti-coincidence and the multi/single-site event(MSE/SSE)discrimination methods were used to suppress the background in the energy region of interest(ROI,1989–2089 keV for this work)with a factor of 23.A background level of 0.33 counts/(keV⋅kg⋅yr)was *** lower limit on the half life of^(76)Ge 0νββdecay was constrained as T_(1/2)^(0ν)>1.0×10^(23)yr(90%C.L.),corresponding to the upper limits on the effective Majorana neutrino mass:<3.2–7.5 eV.

关键词： neutrinoless double beta decay CDEX point-contact germanium detector ^(76)Ge

氢氧化钾改性玉米秸秆生物炭对水中土霉素的吸附特性及机制

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

环境科学 2024年第1期45卷 594-605页

作者：刘总堂孙玉凤费正皓沙新龙温小菊钱彬彬陈建谷成刚盐城师范学院化学与环境工程学院盐城224007 盐城师范学院江苏省农业养殖污染治理与资源化工程研究中心盐城224007 中国科学院南京土壤研究所中国科学院土壤环境与污染修复重点实验室南京210008

四环素类抗生素污染治理是环境研究热点问题之一,生物炭吸附是高效去除有机污染物的重要方法.以玉米秸秆为原料制备热解生物炭(BC),通过氢氧化钾改性获得KBC,选择具有最佳吸附性能的KBC在400~600℃二次热解活化,最终制得改性玉米秸秆生... 详细信息

四环素类抗生素污染治理是环境研究热点问题之一,生物炭吸附是高效去除有机污染物的重要方法.以玉米秸秆为原料制备热解生物炭(BC),通过氢氧化钾改性获得KBC,选择具有最佳吸附性能的KBC在400~600℃二次热解活化,最终制得改性玉米秸秆生物炭AKBC400、AKBC500和AKBC600,并对其结构和表面性质进行表征.通过批处理实验,以BC400为对照,考察了3种AKBC对溶液中盐酸土霉素(OTC)的吸附动力学和吸附热力学特征.与BC400相比,AKBC比表面积增加23.0~37.6倍,孔隙结构显著改善,芳香性增强,吸附性能显著提高.准二级动力学模型可以更好地拟合AKBC对OTC的吸附过程,AKBC500对OTC的吸附速率常数和吸附量均高于AKBC400和AKBC600.颗粒内扩散和膜扩散均是AKBC吸附OTC的控速步骤.Langmuir、Freundlich和Temkin模型均可较好地拟合吸附等温线.AKBC对OTC的吸附均为自发、吸热和熵增加过程,吸附过程同时存在物理吸附和化学吸附作用.AKBC对OTC吸附机制包括孔填充、氢键、π—π共轭、阳离子—π键和强静电作用.AKBC具有良好的孔隙结构和较高的吸附容量,且再生吸附性能稳定,对去除水中土霉素具有较好的潜能.

关键词：玉米秸秆生物炭氢氧化钾改性热解活化盐酸土霉素(OTC) 吸附

在线全文

学校读者我要写书评

暂无评论

板式家具余料信息管理系统的设计与开发

林产工业 2024年第5期61卷 53-59页

作者：杨云龙郝景新吴新凤李俊胜杨滨张然聂鑫磊中南林业科技大学材料科学与工程学院湖南长沙410004 广东合生雅居智能家居有限公司广东广州510000

在工业自动化高速发展的背景下,板式家具产业发展迎来了新的机遇和挑战。在板式家具企业生产过程中,板材余料利用率低和人工管理效率差的问题一直是困扰板式家具企业健康稳步发展的难题。针对这些问题,本文基于板式家具企业生产线的业... 详细信息

在工业自动化高速发展的背景下,板式家具产业发展迎来了新的机遇和挑战。在板式家具企业生产过程中,板材余料利用率低和人工管理效率差的问题一直是困扰板式家具企业健康稳步发展的难题。针对这些问题,本文基于板式家具企业生产线的业务流程,对板式家具余料信息管理的需求进行了分析,并结合企业资源计划系统和企业制造执行系统开发了基于板式家具企业的余料信息管理系统,提出了一种自动化余料管理新方法。该系统的使用,极大提高了板式家具企业余料的管理效率和板材余料的利用率,降低了企业的生产成本。

关键词：工业自动化板式家具企业余料利用率管理效率信息管理系统

基于WISE的鱼雷武器系统弹道仿真模型设计与应用

在线全文

学校读者我要写书评

暂无评论

系统仿真学报 2004年第7期16卷 1441-1443,1449页

作者：聂卫东康凤举褚彦军顾浩西北工业大学航海学院西安710072

应用通用仿真程序设计语言开发武器连续系统的一体化仿真软件包[1]往往会出现开发周期长,建模规范化及可重用性差等问题,本文研究了基于WISE仿真环境的模块化建模方法,通过WISE的图形化建模工具实现不同粒度的可重用性模型的设计,以此... 详细信息

应用通用仿真程序设计语言开发武器连续系统的一体化仿真软件包[1]往往会出现开发周期长,建模规范化及可重用性差等问题,本文研究了基于WISE仿真环境的模块化建模方法,通过WISE的图形化建模工具实现不同粒度的可重用性模型的设计,以此为基础构建脱离WISE环境可单独运行的一体化仿真程序。以鱼雷武器系统弹道仿真及视景演示组成的分布交互系统开发为应用背景,验证了该方法具有建模过程快捷、灵活、可重用性好等优点。

关键词：仿真 WISE 鱼雷武器系统模块化可重用

在线全文

学校读者我要写书评

暂无评论

典型反舰导弹运动建模与仿真技术

系统仿真学报 2006年第8期18卷 2067-2069,2077页

作者：顾浩康凤举韩亮刘剑威西北工业大学航海工程学院西安710072 北京航空航天大学先进仿真技术航空科技重点实验室北京100083 中国船舶重工集团公司第七一六研究所江苏连云港222006

为能在作战仿真环境下检验舰载防空武器系统性能,在对近年来某些先进反舰导弹的运动规律和采取掠海突防、末段跃升攻击方式分析研究的基础上,针对反舰导弹的各种机动模式建立其运动模型,运用动力学原理进行反舰导弹的航迹模拟,并对仿真... 详细信息

为能在作战仿真环境下检验舰载防空武器系统性能,在对近年来某些先进反舰导弹的运动规律和采取掠海突防、末段跃升攻击方式分析研究的基础上,针对反舰导弹的各种机动模式建立其运动模型,运用动力学原理进行反舰导弹的航迹模拟,并对仿真结果进行分析比较。所得仿真方法为舰艇防空武器系统对反舰导弹各攻击段的拦截方式研究提供了有效仿真措施。

关键词：反舰导弹运动特征分析建模与仿真航迹模拟

Association of tumor morphology with long-term prognosis after liver resection for patients with a solitary huge hepatocellular carcinoma-a multicenter propensity score matching analysis

在线全文

学校读者我要写书评

暂无评论

Hepatobiliary Surgery and Nutrition 2023年第3期12卷 314-327,I0006,I0007页

作者： Xin-Fei Xu Han Wu ju-dong Li Lan-Qing Yao Bin Huang Yong-kang Diao Ting-hao Chen wei-Min gu Zhong Chen Jie Li Yao-Ming Zhang Hong Wang Ying-Jian Liang Ya-hao Zhou Chao Li Ming-Da Wang Cheng-Wu Zhang Timothy MPawlik Wan Yee Lau feng Shen Tian Yang Department of Hepatobiliary Surgery Eastern Hepatobiliary Surgery HospitalNaval Medical University(Second Military Medical University)ShanghaiChina Department of General Surgery Changzheng HospitalNaval Medical University(Second Military Medical University)ShanghaiChina Department of Radiology Eastern Hepatobiliary Surgery HospitalNaval Medical University(Second Military Medical University)ShanghaiChina Division of Hepatobiliary and Pancreatic Surgery Department of General SurgeryCancer CenterZhejiang Provincial People’s HospitalPeople’s Hospital of Hangzhou Medical CollegeHangzhouChina Department of General Surgery Ziyang First People’s HospitalZiyangChina The First Department of General Surgery the Fourth Hospital of HarbinHarbinChina Department of Hepatobiliary Surgery Affiliated Hospital of Nantong UniversityNantongChina Department of Hepatobiliary Surgery Fuyang People’s HospitalFuyangChina The Second Department of Hepatobiliary Surgery Meizhou People’s HospitalMeizhouChina Department of General Surgery Liuyang People’s HospitalChangshaChina Department of Hepatobiliary Surgery the First Affiliated Hospital of Harbin Medical UniversityHarbinChina Department of Hepatobiliary Surgery Pu’er People’s HospitalPu’erChina Department of Surgery Ohio State UniversityWexner Medical CenterColumbusOHUSA Faculty of Medicine the Chinese University of Hong KongHong KongChina

Background:A solitary hepatocellular carcinoma(HCC)without macrovascular invasion and distant metastasis,regardless of tumor size,is currently classified as early-stage disease by the latest Barcelona Clinic Liver Cancer(BCLC)staging *** the preferred treatment is surgical resection,the association of tumor morphology with long-term survival outcomes after liver resection for a solitary huge HCC of≥10 cm has not been ***:Patients who underwent curative liver resection for a solitary huge HCC were identified from a multicenter *** imaging findings were used to define spherical-or ellipsoidal-shaped lesions with smooth edges as balloon-shaped HCCs(BS-HCCs);out-of-shape lesions or lesions of any shape with matt edges were defined as non-balloon-shaped HCCs(NBS-HCCs).The two groups of patients with BS-HCCs and NBS-HCCs were matched in a 1:1 ratio using propensity score matching(PSM).Clinicopathologic characteristics,long-term overall survival(OS)and recurrence-free survival(RFS)were ***:Among patients with a solitary huge HCC,74 pairs of patients with BS-HCC and NBS-HCC were *** pathological features including proportions of microvascular invasion,satellite nodules,and incomplete tumor encapsulation in the BS-HCC group were lower than the NBS-HCC *** a median follow-up of 50.7 months,median OS and RFS of all patients with a solitary huge HCC after PSM were 27.8 and 10.1 months,*** BS-HCC group had better median OS and RFS than the NBS-HCC group(31.9 vs.21.0 months,P=0.01;and 19.7 vs.6.4 months,P=0.015).Multivariate analyses identified BS-HCC as independently associated with better OS(HR=0.592,P=0.009)and RFS(HR=0.633,P=0.013).Conclusions:For a solitary huge HCC,preoperative imaging on tumor morphology was associated with prognosis following *** particular,patients with BS-HCCs had better long-term survival following liver resection versus patients with large NBS-HCCs.

关键词： Hepatocellular carcinoma(HCC) survival recurrence tumor morphology hepatectomy

Preclinical evaluation of the safety and effectiveness of a new bioartificial cornea

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Bioactive Materials 2023年第11期29卷 265-278页

作者： Yansha hao Jingting Zhou ju Tan feng Xiang Zhongliang Qin jun Yao Gang Li Mingcan Yang Lingqin Zeng Wen Zeng Chuhong Zhu Department of Anatomy Engineering Research Center for Organ Intelligent Biological Manufacturing of Chongqingkey Lab for Biomechanics and Tissue Engineering of ChongqingThird Military Medical UniversityChongqing400038China Engineering Research Center of Tissue and Organ Regeneration and Manufacturing Ministry of EducationChongqing400038China State Key Laboratory of Traum1 Burnand Combined InjuryChongqingChina Department of Cell Biology Third Military Army Medical UniversityChongqing400038China Hong Chang Biotechnology Co. LtdGuangzhou510700China Zhong Zhi Yi gu Research Institute Chongqing Jiukang Medical Research Institute Co.Ltd..China

Cross-linking agents are frequently used to restore corneal properties after decellularization,and it is especially important to select an appropriate method to avoid excessive *** addition,how to promote wound healing and how to improve scar formation require further *** ensure the safety and efficacy of animal-derived products,we designed bioartificial corneas(BACs)according to the criteria for Class III medical *** BACs do not require cross-linking agents and increase mechanical strength via self-cross-linking of aldehyde-modified hyaluronic acid(AHA)and carboxymethyl chitosan(CMC)on the surface of decellularized porcine corneas(DPCs).The results showed that the BACs had good biocompatibility and transparency,and the modification enhanced their antibacterial and anti-inflammatory properties in *** animal studies showed that the BACs can rapidly regenerate the epithelium and restore vision within a *** 3 months,the BACs were gradually filled with epithelial,stromal,and neuronal cells,and after 6 months,their transparency and histology were almost *** addition,side effects such as corneal neovascularization,conjunctival hyperemia,and ciliary body hyperemia rarely occur in ***,these BACs show promise for clinical application for the treatment of infectious corneal ulcers and as a temporary covering for corneal perforations to achieve the more time.

关键词： Decellularization Bioartificial cornea Cross-linking Biocompatibility Transparency

基于HLA的鱼雷武器系统仿真环境设计与实现

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

兵工学报 2007年第3期28卷 382-384页

作者：康凤举顾浩吴宇苏颖宋志明西北工业大学航海学院陕西西安710072 西北工业大学水下信息处理与控制国家重点实验室陕西西安710072

提出了一种基于高层体系结构的可扩展、可重构的鱼雷武器作战仿真开放式应用体系结构的设计方法,研制了基于软件复用技术的领域内联邦成员软件应用框架,有效地解决了时间管理策略制定及公布/定购声明的自动化、RTI与仿真应用之间接口一... 详细信息

提出了一种基于高层体系结构的可扩展、可重构的鱼雷武器作战仿真开放式应用体系结构的设计方法,研制了基于软件复用技术的领域内联邦成员软件应用框架,有效地解决了时间管理策略制定及公布/定购声明的自动化、RTI与仿真应用之间接口一致性问题。同时,开发出能够提供海底地形、闪烁光斑、气泡、水下混浊及环境色等功能的水下空间Vega扩展模块,从而解决了海体、海底的三维显示。采用pRTI1.3等工具软件构建了含舰艇、鱼雷、水声装备对抗器材等10个联邦成员的分布交互仿真综合环境,初步运行表明,其具有良好的人机界面、模型可重用、实时性好等特点,能适应潜—舰,潜—潜等多种水下对抗样式的仿真要求。

关键词：计算机应用鱼雷 HLA 开放式应用体系结构软件应用框架水下空间模块