检索结果-南通市图书馆

Tailoring Texture to Highly Strengthen AZ31 Alloy Plate in the Thickness Direction via Pre-tension and Rolling-Annealing

引用

Acta Metallurgica Sinica(English Letters) 2023年第2期36卷 266-280页

作者： Tianjiao Li Jiang zheng Lihong Xia Haoge Shou yongfa Zhang Rong Shi Liuyong He Wenkai Li International Joint Laboratory for Light Alloys(Ministry of Education) College of Materials Science and EngineeringChongqing UniversityChongqing400044China Shenyang National Laboratory for Materials Science Chongqing UniversityChongqing400044China College of Mechanical Engineering Chongqing Technology and Business UniversityChongqing400067China Zhejiang Provincial Engineering Center of Integrated Manufacturing Technology and Intelligent Equipment Zhejiang University City CollegeHangzhou310015China

Conventional wrought Mg alloys,such as AZ31 and ZK60 rolled plates,usually exhibit significantly low tensile yield strength in the thickness direction.This can be attributed to the high activity of{10-12}tension twinning due to the strong basal texture(//ND,normal direction).In this work,the tensile yield strength in the ND of the as-rolled(AR)AZ31 plate increased from 50 to 150 MPa(increased by 200%)via simple processing,i.e.,pre-tension and rolling-annealing(PTRA)treatment.The strong basal texture(//ND)of the AR plate was changed into a weakened fiber texture(⊥ND).The evolution of microstructures during PTRA treatment and the activated deformation modes during uniaxial tension were studied quantitatively and statistically by the means of intergranular misorientation(IM)and in-grain misorientation axes(IGMA)analysis.The results indicate that various twin variants,as well as{10-12}-{10-12}secondary twins,were activated during pre-tension and rolling,and most residual matrix was consumed by twins after annealing.The dominated deformation modes in tension changed from{10-12}tension twinning(the AR sample)to prismatic slip(the PTRA sample)in the early tensile deformation.The underlying formation mechanism of the fiber texture and corresponding strengthening mechanism were discussed.

关键词： Pre-tension Annealing Tailoring texture Texture strengthening Deformation modes

来源：

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

恩度联合化疗治疗117例晚期恶性肿瘤(英文)

引用

The Chinese-German Journal of Clinical Oncology 2013年第2期12卷 61-64页

作者： Pingpo Ming Wei Ge Liang Liu yongfa Zheng Huilin Xu Center of Oncology Renmin Hospital of Wuhan University

Objective: The aim of this study was to evaluate the recent efficacy and adverse reactions of recombinant human endostatin (Endostar) plus chemotherapy in the treatment of advanced malignancies. Methods: One hundred and seventeen cases of advanced malignancies were diagnosed and confirmed by histopathological examination, patients were treated with Endostar combined with chemotherapeutic drugs with no cross-resistance. Evaluate the efficacy and adverse reactions after finished two cycles of combination therapy. Results: All the 117 cases of patients were evaluated according to relevant standards, and there were 12 cases of complete remission (CR), 30 cases of partial remission (PR), 58 cases of stable disease (SD), 17 cases of progressive disease (PD). The response rate (RR) was 35.8%, disease control rate (DCR) was 85.4%. Conclusion: The protocol of Endostar combined with chemotherapy could improve the quality of life of patients with malignances, it also has the advantage of low toxicity. Considering the time span of the study, the long-term efficacy remains to be observed.

关键词：恶性肿瘤化疗药物联合治疗血管内皮晚期重组抑制素病理组织学检查

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Anisotropic cyclic deformation behavior of an extruded Mg-3Y alloy sheet with rare earth texture

引用

Journal of Magnesium and Alloys 2022年第6期10卷 1581-1597页

作者： Tianjiao Li Jinsong Rao Jiang zheng Dongdi Yin Haoge Shou yongfa Zhang Rong Shi Weichao Jing Lihong Xia International Joint Laboratory for Light Alloys(Ministry of Education) College of Materials Science and EngineeringChongqing University174 Shazhengjie StreetShapingba DistrictChongqing 400044China Shenyang National Laboratory for Materials Science Chongqing UniversityChongqing 400044China Key Laboratory of Advanced Technologies of Materials Ministry of EducationSchool of Materials Science and EngineeringSouthwest Jiaotong UniversityChengduSichuan 610031China College of Mechanical Engineering Chongqing Technology and Business UniversityChongqing 400067China

Mg-RE(magnesium-rare earth)alloys exhibit pronounced in-plane anisotropy of mechanical response under quasi-static monotonic loading resulting from the RE texture,as extensively reported.In this work,an obvious in-plane anisotropy of cyclic deformation behavior was observed in an extruded Mg-3Y alloy sheet during strain-controlled tension-compression low-cycle fatigue(LCF)at room temperature.The extrusion direction(ED)samples displayed better fatigue resistance with almost symmetrical hysteresis loops and longer fatigue life compared with the transverse direction(TD)samples.The influences of texture on the deformation modes,cracking modes,and mechanical behavior of Mg-Y alloy sheets under cyclic loading were studied quantitatively and statistically.The activation of various slip/twinning-detwinning systems was measured at desired fatigue stages via EBSD observations together with in-grain misorientation axes(IGMA)analysis.The results indicate that the activation of deformation modes in the TD sample was featured by the cyclic transition,i.e.,prismatic slip(at the tensile interval)→{10–12}tension twinning(at the compressive reversal)→detwinning+prismatic slip(at the re-tensile reversal).In the case of the ED sample,the cyclic deformation was dominated by the basal slip throughout the fatigue life.For cracking modes,intergranular cracking and persistent slip bands(PSB)cracking were the primary cracking modes in the ED sample while the TD sample showed a high tendency of{10–12}tension twinning cracking(TTW cracking).The underlying mechanisms influencing the activation of various slip/twinning-detwinning systems,as well as cracking modes and cyclic mechanical behavior,were discussed.

关键词： Anisotropic cyclic deformation Dislocation slip Twinning-detwinning Cracking modes Mechanical behavior

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Fabrication of microwave-sensitized nanospheres of covalent organic framework with apatinib for tumor therapy

引用

Chinese Chemical Letters 2023年第5期34卷 427-432页

作者： Qijun Du Jian Zou Zhongbing Huang Shimei Li Longfei Tan Xiangling Ren Guangfu Yin yongfa Zheng Xianwei Meng College of Biomedical Engineering Sichuan UniversityChengdu 610065China Laboratory of Controllable Preparation and Application of Nanomaterials CAS Key Laboratory of CryogenicsTechnical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China Sichuan Kangcheng Biotechnology Co. Ltd.Chengdu 610041China Department of Oncology Renmin Hospital of Wuhan UniversityWuhan 430060China

A new nanocomposite of hollow covalent organic framework(COF)conjugated with the apatinib(AP)and loading microwave-sensitizer(ionic liquid,IL)was prepared by layer by layer(LBL)method and hyaluronic acid(HA)coating,named as COF-AP-IL@HA.AP loading rate in COF hollow-spheres(~30 nm shell thickness)was~40.3%,due to the interactions of hydrogen andπ-πbonds between AP and COF shell,and acidic environment destroyed COF structure,promoting AP release.Microwave sensitization of loaded IL in COF hollow-spheres could enhance the microwave heat-effect,and combined AP therapeutic ability,leading to their higher inhibitation on tumor,due to targeting ability of HA and the local release of apatinib.88.9%of inhibition rate of COF-AP-IL@HA under microwave on the in vivo tumor was significantly higher than those without microwave(12.3%)and COF-IL@HA with microwave(37.5%),indicating a synergism of sensitized microwave hyperthermia and AP therapy on the reduced expression of VEGF via the downregulation pathway of hypoxia inducible factor.These results indicated that COF-AP-IL@HA was potential to the application in the combination therapy of tumor of the sensitized microwave hyperthermia and apatinib.

关键词： Covalent organic framework Antiangiogenesis Tumor therapy Microwave hyperthermia Hollow spheres

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Atomically dispersed Mn-Nx catalysts derived from Mn-hexamine coordination frameworks for oxygen reduction reaction

引用

Carbon Energy 2024年第5期6卷 114-126页

作者： Guoyu Zhong Liuyong Zou Xiao Chi Zhen Meng Zehong Chen Tingzhen Li yongfa Huang Xiaobo Fu Wenbo Liao Shaona zheng Yongjun Xu Feng Peng Xinwen Peng Guangdong Provincial Key Laboratory of Distributed Energy Systems School of Chemical Engineering and Energy TechnologyDongguan University of TechnologyDongguanChina State Key Laboratory of Pulp and Paper Engineering South China University of TechnologyGuangzhouChina Department of Chemistry Centre for Advanced 2D Materials(CA2DM)National University of SingaporeSingaporeSingapore School of Chemistry and Chemical Engineering Guangzhou UniversityGuangzhouChina

Metal-organic frameworks recently have been burgeoning and used as precursors to obtain various metal-nitrogen-carbon catalysts for oxygen reduction reaction(ORR).Although rarely studied,Mn-N-C is a promising catalyst for ORR due to its weak Fenton reaction activity and strong graphitization catalysis.Here,we developed a facile strategy for anchoring the atomically dispersed nitrogen-coordinated single Mn sites on carbon nanosheets(MnNCS)from an Mn-hexamine coordination framework.The atomically dispersed Mn-N4 sites were dispersed on ultrathin carbon nanosheets with a hierarchically porous structure.The optimized MnNCS displayed an excellent ORR performance in half-cells(0.89 V vs.reversible hydrogen electrode(RHE)in base and 0.76 V vs.RHE in acid in half-wave potential)and Zn-air batteries(233 mW cm^(−2)in peak power density),along with significantly enhanced stability.Density functional theory calculations further corroborated that the Mn-N4-C1_(2)site has favorable adsorption of*OH as the rate-determining step.These findings demonstrate that the metal-hexamine coordination framework can be used as a model system for the rational design of highly active atomic metal catalysts for energy applications.

关键词： carbon nanosheets electrocatalyst metal-organic frameworks Mn-N4 oxygen reduction reaction Zn-air batteries

来源：

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

Integrated lithium niobate single-mode lasers by the Vernier effect

引用

Science China(Physics,Mechanics & Astronomy) 2021年第9期64卷 82-86页

作者： Ru Zhang Chen Yang ZhenZhong Hao Di Jia Qiang Luo DaHuai zheng HongDe Liu XuanYi Yu Feng Gao Fang Bo yongfa Kong GuoQuan Zhang JingJun Xu MOE Key Laboratory of Weak-Light Nonlinear Photonics TEDA Institute of Applied Physics and School of PhysicsNankai UniversityTianjin 300457China Collaborative Innovation Center of Extreme Optics Shanxi UniversityTaiyuan 030006China Collaborative Innovation Center of Light Manipulations and Applications Shandong Normal UniversityJinan 250358China

Microcavity lasers based on erbium-doped lithium niobate on insulator(LNOI),which are key devices for LNOI integrated photonics,have attracted significant attention recently.In this study,we report the realization of a C-band single-mode laser using the Vernier effect in two coupled erbium-doped LNOI microrings with different radii under the pump of a 980-nm continuous laser.The laser,operating stably over a large range of pumping power,has a pump threshold of about 200μW and a side-mode suppression ratio exceeding 26 dB.The high-performance LNOI single-mode laser will promote the development of lithium niobate integrated photonics.

关键词： lithium niobate LNOI microcavities single-mode laser

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

紫杉醇脂质体联合奈达铂治疗晚期非小细胞肺癌17例(英文)

引用

The Chinese-German Journal of Clinical Oncology 2012年第4期11卷 196-198页

作者： Tao Suo Wei Ge Jinzhong Zhang yongfa Zheng Shunxiang Luo Department of Oncology Renmin Hospital of Wuhan UniversityWuhan 430060China

Objective:The aim of this study was to evaluate the recent efficacy and adverse reactions of paclitaxel liposome plus nedaplatin in the treatment of advanced non-small cell lung cancer (NSCLC).Methods:Seventeen cases of NSCLC treated with paclitaxel liposome and nedaplatin for 2 to 6 cycles,by infusing paclitaxel liposome 135 mg/m2 for 3 h on d1 and nedaplatin 80 mg/m2 as infusion on d2.Results:Among 17 patients being evaluated for response to treatment,1 achieved complete response (CR),4 achieved partial response (PR),3 achieved stable disease (SD),9 achieved progress disease (PD).The main adverse reaction was haematological toxicities,especially leukopenia and thrombocytopenia.The non-haematological toxicities included nausea,vomiting,mild hepatic dysfunction,alopecia and so on.Conclusion:Paclitaxel liposome plus nedaplatin was effective and well tolerated for treating patients with advanced NSCLC.

关键词：非小细胞肺癌脂质体紫杉醇治疗晚期铂不良反应血小板减少

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

MoS2-Based Photodetectors Powered by Asymmetric Contact Structure with Large Work Function Difference

引用

Nano-Micro Letters 2019年第2期11卷 217-228页

作者： Zhe Kang yongfa Cheng Zhi zheng Feng Cheng Ziyu Chen Luying Li Xinyu Tan Lun Xiong Tianyou Zhai Yihua Gao Center for Nanoscale Characterization and Devices(CNCD)Wuhan National Laboratory for Optoelectronics(WNLO)and School of Physics and School of Materials Science and Engineering Huazhong University of Science and Technology(HUST)Luoyu Road 1037Wuhan 430074People’s Republic of China College of Materials and Chemical Engineering China Three Gorges UniversityDaxue Road 8Yichang 443002People’s Republic of China Hubei Key Laboratory of Optical Information and Pattern Recognition School of Optical Information and Energy EngineeringSchool of Mathematics and PhysicsWuhan Institute of TechnologyGuanggu 1st Road 206Wuhan 430205People’s Republic of China

Self-powered devices are widely used in the detection and sensing fields.Asymmetric metal contacts provide an effective way to obtain self-powered devices.Finding two stable metallic electrode materials with large work function differences is the key to obtain highly efficient asymmetric metal contacts structures.However,common metal electrode materials have similar and high work functions,making it difficult to form an asymmetric contacts structure with a large work function difference.Herein,Mo2C crystals with low work function(3.8 eV) was obtained by chemical vapor deposition(CVD) method.The large work function difference between Mo2C and Au allowed us to synthesize an efficient Mo2C/MoS2/Au photodetector with asymmetric metal contact structure,which enables light detection without external electric power.We believe that this novel device provides a new direcfor the design of miniature self-powered photodetectors.These results also highlight the great potential of ultrathin Mo2C prepared by CVD in heterojunction device applications.

关键词： Mo2C MoS2 Chemical vapor deposition Asymmetric metal contacts Photodetector

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

CT/CT图像融合用于非小细胞肺癌放射治疗对V_(20)及放射性肺炎影响的临床研究(英文)

引用

The Chinese-German Journal of Clinical Oncology 2012年第2期11卷 72-75页

作者： Liang Liu Jinzhong Zhang Changhu Li Wei Ge Shunxiang Luo Yu Huang yongfa Zheng Center of Oncology Renmin Hospital of Wuhan UniversityWuhan 430060China

Objective:The aim of our study was to investigate the value of CT/CT image fusion radiation treatment planning in non-small cell lung cancer(NSCLC) and the impact on V20 and radiation pneumonitis(RP).Methods:Patients who were pathologically or cytologically diagnosed of stage IIIA and IIIB NSCLC were treated with three-dimensional conformal radiation therapy(4000 cGy).Forty patients got at least 25% tumor reduction were randomly divided into two groups:group A of regular shrink field radiotherapy(20 cases) and group B of CT/CT image fused shrink field radiotherapy(20 cases).Dosage reached 6600 cGy.Clinical data,V20 and RP were observed within 3 months after radiotherapy.Statistical analysis was conducted for the NSCLC patients.Results:22.5%(9/40) patients got RP during follow-up.Group A accounted for 6 cases(30%),and group B had 3 cases(15%).There was no marked difference between the two groups(P = 0.256),univariate analysis revealed that the IV20 of A and B groups,and IV20 and CV20 of all patients were statistically related to the incidence of RP(P < 0.05).With Wilcoxon method assay,the ipsilateral lung V20 and contralateral lung V20 had statistical significance between the two groups(P < 0.05).Conclusion:The CT/CT image infusion treatment planning could increase the radical dosage with better tumor control probability but won't increase adverse reaction.

关键词：非小细胞肺癌 CT检查图像融合 V20 辐射性放疗肺炎放射治疗

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

多西他赛联合同步放疗治疗晚期鼻咽癌的临床研究(英文)

引用

The Chinese-German Journal of Clinical Oncology 2013年第12期12卷 592-595页

作者： Wei Luo Wei Ge yongfa Zheng Xianfeng Pan Jing Song Huilin Xu Pingpo Ming Cancer Center Renmin Hospital of Wuhan University

Objective:The aim of this study was to study the short-term curative effects and adverse reactions of docetaxel(DOC) in concurrent chemoradiotherapy compared to DDP plus 5-Fu(DF) combined with concurrent radiotherapy in patients with advanced nasopharyngeal carcinoma.Methods:Thirty-three patients in the experimental group(DOC group) were given DOC 25 mg/m 2 ivgtt,d1,7 times,concurrent radiotherapy was performed from d1.Thirty-three patients in the control group(DF group) were given cisplatin 25 mg/m 2 ivgtt d1–3 and 5-Fu 550 mg/m 2 iv,d1–5,3 weeks a cycle,2 cycles,and concurrent radiotherapy was performed from d1.Six MV X-ray and 9 MeV electronic line for external irradiation were adopted in concurrent radiotherapy.Results:The response rates of DOC group and DF group were 90.9% and 93.9%,the rates of neutropenia were 45.45% and 67.74%,and the rates of oral mucositis were 60.61% and 90.32%.Conclusion:The difference of shortterm curative effects between DOC group and DF group was not statistically significant in patients with advanced nasopharyngeal carcinoma.The rates of adverse reactions were lower in DOC group.DOC combined with concurrent radiotherapy could be a new choice for patients with advanced nasopharyngeal carcinoma.

关键词：联合治疗鼻咽癌多西紫杉醇同步晚期临床不良反应静脉滴注

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：