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Effect of cerium alloying on microstructure,texture and mechanical properties of magnesium during cold-rolling process

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Journal of Rare Earths 2024年第5期42卷 1001-1008,I0007页

作者： Zhen Zhang Huanhuan chen Shiju Cao jinhua Peng Peng Guo Chang Long Shan Wang Chang chen Yong Wu Ji'an Huang Xiaodong Du Haigen Wei School of Materials Science and Engineering Hefei University of TechnologyHefei230009China NationalLocal Joint Research Center of Non-ferrous Metal Materials and Processing Technology Hefei230009China Laboratory of Nonferrous Metal Material and Processing Engineering of Anhui Province Hefei230009China School of Materials Science and Engineering Jiangsu University of Science and TechnologyZhenjiang212003China Institute of Industry and Equipment Technology Hefei University of TechnologyHefei230009China Faculty of Materials Metallurgy and Chemistry Jiangxi University of Science and TechnologyGanzhou341000China

Hot-extrusion and cold-rolling were conducted on Mg-Ce binary alloys to explore the effect of cerium(Ce)on microstructure,texture and mechanical properties of Mg *** addition of Ce results in significant grain refinement both in as-cast and hot-extruded *** basal texture is also weakened after extrusion and an inclined basal texture is formed with Ce *** strength and elongation of the Mg-Ce alloys are improved simultaneously due to such grain refinement and texture weakening *** cold-rolling,plenty of twins are found in the pure Mg and AZ31 plates while grains in the Mg-0.3Ce plate deform more uniformly without lamellar twin ***,Mg-0.3Ce alloys own strong and continuous strain hardening because Ce atoms and Mg-Ce precipitated phases serve as obstacles for dislocation slip.

关键词： Mg-Ce alloys Hot extrusion Cold-rolling Rare earths

Organic-inorganic fertilization promotes paddy soil macroaggregate organic carbon accumulation associated with key bacterial populations in subtropical China

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Pedosphere 2024年第5期34卷 941-950页

作者： jinhua ZHAO Lin chen Guixiang ZHOU Fang LI Jiabao ZHANG Congzhi ZHANG Donghao MA Biao FENG Fengqiu Experimental Station of National Ecosystem Research Network of China State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil Science Chinese Academy of Sciences University of Chinese Academy of Sciences College of Resources and Environment Henan Agricultural University

Macroaggregate organic carbon (Macro-OC) accumulation in paddy soils is of great significance in promoting multiple agroecosystem services. However,the effects of different fertilization practices on Macro-OC accumulation in paddy soils at the regional scale have not been comprehensively ***, we conducted long-term fertilization field experiments at four sites, Taoyuan, Wangcheng, Jinxian, and Suzhou, in the subtropical area of China to reveal the effects of inorganic and organic-inorganic (OIF) fertilization on Macro-OC accumulation and its relationships with important microbial traits (the abundance ratio of GH48:cbhI genes and the richness of keystone bacterial taxa) in paddy soils. The results showed that long-term fertilization (particularly OIF) significantly increased the content of Macro-OC, which mainly consisted of particulate organic carbon (C). Organic-inorganic fertilization decreased the percentage of O-alkyl C but increased the percentages of alkyl, aromatic, and phenolic C. Organic-inorganic fertilization promoted the abundance of the bacterial cellulose-degrading gene GH48 retrieved from macroaggregates. The orders Anaerolineales, Bacillales, and Clostridiales were identified as keystone bacterial taxa in macroaggregates and were significantly correlated with the physical fraction and chemical structure of Macro-OC. Structural equation modeling revealed that fertilization-induced changes in soil pH and C:N ratio affected the richness of Anaerolineales, Bacillales, and Clostridiales, which was strongly associated with the increase of percentages of aromatic and phenolic C and further facilitated Macro-OC accumulation. Together, these results suggested that OIF promoted Macro-OC accumulation associated with key bacterial populations in paddy soils. The results provide an important basis for boosting soil C accrual in the subtropical rice-growing areas.

关键词： bacterial community keystone bacterial taxa mean weight diameter mineral-associated organic carbon particulate organic carbon structural equation modeling

The Decision Rules of Rough Set and its Application in Aquaculture

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南昌工程学院学报 2006年第2期25卷 129-132页

作者： Lian chen Yu Lin jinhua Sun Yuan Liao Computing Center Nanchang University Nanchang 330029 China

In this article,the basic theory of rough set is presented,followed by a new heuristics approach for rule reduction,and the procedure of rule mining in aquaculture is illuminated with an example.

关键词： roughset data mining decision rule

Multi-Material Topology Optimization for Spatial-Varying Porous Structures

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工程与科学中的计算机建模(英文) 2024年第1期138卷 369-390页

作者： chengwan Zhang Kai Long Zhuo chen Xiaoyu Yang Feiyu Lu jinhua Zhang Zunyi Duan State Key Laboratory for Alternate Electrical Power System with Renewable Energy Sources North China Electric Power UniversityBeijing102206China School of Mechanical and Automotive Engineering South China University of TechnologyGuangzhou510640China Faculty of Materials and Manufacturing Beijing University of TechnologyBeijing100124China Institute of Structural Health Monitoring and Control School of MechanicsCivil Engineering&ArchitectureNorthwestern Polytechnical UniversityXi’an710072China

This paper aims to propose a topology optimization method on generating porous structures comprising multiple *** mathematical optimization formulation is established under the constraints of individual volume fraction of constituent phase or total mass,as well as the local volume fraction of all *** original optimization problem with numerous constraints is converted into a box-constrained optimization problem by incorporating all constraints to the augmented Lagrangian function,avoiding the parameter dependence in the conventional aggregation ***,the local volume percentage can be precisely *** effects including the globalmass bound,the influence radius and local volume percentage on final designs are exploited through numerical *** numerical results also reveal that porous structures keep a balance between the bulk design and periodic design in terms of the resulting *** results,including those for irregular structures andmultiple volume fraction constraints,demonstrate that the proposedmethod can provide an efficient solution for multiple material infill structures.

关键词： Topology optimization porous structures local volume fraction augmented lagrangian multiple materials

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肝圆韧带浆膜面在胆道修补中的应用

中国普通外科杂志 2024年第8期33卷 1240-1250页

作者：徐国辉黄国荣蔡联明王德进汪志平许岩聂乐乐邓彬钟世洪陈锦华张长和陈曦姜家宝魏小勇李小军饶荣生周存才江西省肿瘤医院/江西省肿瘤研究所/南昌医学院第二附属医院肝胆外科江西南昌330029 江西省德兴市人民医院外科江西德兴334200 江西省赣州市肿瘤医院外科江西赣州341005 江西省抚州市人民医院肝胆外科江西抚州344000 江西省万载县人民医院外科江西万载336100 南京医科大学附属泰州人民医院影像科江苏泰州225300 南京医科大学附属泰州人民医院肝胆外科江苏泰州225300

背景与目的:肝胆外科手术中可因各种原因发生胆管损伤、胆管缺损,如缺损较小可以直接行缝合修补,如缺损较大则往往需要行胆管对端吻合或胆肠Y吻合,后两种手术方式比较复杂,而且胆管对端吻合有可能由于吻合口的张力及血供问题出现胆汁漏... 详细信息

背景与目的:肝胆外科手术中可因各种原因发生胆管损伤、胆管缺损,如缺损较小可以直接行缝合修补,如缺损较大则往往需要行胆管对端吻合或胆肠Y吻合,后两种手术方式比较复杂,而且胆管对端吻合有可能由于吻合口的张力及血供问题出现胆汁漏、胆管狭窄,而胆肠吻合则改变了正常生理通道,并发症也较多,因此有必要寻求更为安全、有效、简便的胆管修补方法。本研究探讨肝圆韧带浆膜面修补胆管缺损的临床效果及其应用价值。方法:回顾性分析2008年5月-2023年3月6家医院13例采用肝圆韧带浆膜面修补胆管缺损患者的临床资料。结果:13例患者中男性3例,女性10例;年龄40~68岁,平均55.6岁;胆囊结石2例、胃癌1例、胆管炎性狭窄4例、肝左内叶肝细胞癌2例、其他恶性肿瘤4例。术后有6例(46.2%)患者发生胆汁漏,经胆管引流及腹腔引流5例患者于术后7~27 d停止,1例患者于术后56 d停止,无围手术期死亡。7例患者行胆管造影检查,未见胆汁漏、胆管狭窄及胆管结石征象。2例患者行胆管镜检查,未见胆管黏膜与肝圆韧带浆膜之间存在分界。术后随访时间3个月至14年,1例患者出现左侧肝内胆管轻度扩张,考虑肝圆韧带修补的左肝管可能存在狭窄,其余12例患者修补处胆管无狭窄及囊状扩张。结论:肝圆韧带浆膜面修补胆管缺损疗效好,且简单易行,值得临床推广应用。

关键词：胆道外科手术再手术肝圆韧带

Changes in brain function and anatomical structure following treatment of hyperbaric oxygen for visual pathway abnormalities in 16 cases Evaluation of functional magnetic resonance imaging combined with diffusion tensor imaging

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Neural Regeneration Research 2008年第2期3卷 117-123页

作者： Ziqian chen Ping Ni Hui Xiao jinhua chen Gennian Qian Youqiang Ye Shangwen Xu Jinliang Wang Xizhang Yang Department of Medical Imaging Center Fuzhou General Hospital of Nanjing Military Area Command of Chinese PLA Fuzhou 350025 Fujian Province China Deparment of Medical Engineering Fuzhou General Hospital of Nanjing Military Area Command of Chinese PLA Fuzhou Province China Department of Medical Statistics Fuzhou General Hospital of Nanjing Military Area Command of Chinese PLA Fuzhou Province China

BACKGROUND： There is a growing research focus on the combination of blood oxygenation level dependent functional magnetic resonance imaging （BOLD-fMRI） and diffusion tensor imaging （DTI） to evaluate visual cortical function and structural changes in the cerebrum, as well as morphological changes to the white matter fiber tracks, after visual pathway lesions. However, the combined application of BOLD-fMRI and DTI in treating of visual pathway abnormalities still requires further studies. OBJECTIVE： To observe and evaluate the effects of hyperbaric oxygen on visual pathway abnormalities, and to evaluate the characteristics of cerebral function and anatomic structural changes by using BOLD-fMRI combined with DTI technique. DESIGN： Case contrast observation. SETTING： Fuzhou General Hospital of Nanjing Military Area Command of Chinese PLA. PARTICIPANTS： Sixteen patients （9 males and 7 females, 15-77 years old） with lateral or bilateral visual disorder induced by visual pathway lesions were selected from the Department of Neurology, Fuzhou General Hospital of Nanjing Military Area Command of Chinese PLA from January 2006 to May 2007. These patients comprised the lesion group. Measures of interventional therapy： hyperbaric oxygen of two normal atmospheres for three courses （10 d/course） and routine internal medicine treatment. In addition, 12 healthy subjects of similar sex and age to the lesion group were regarded as the control group. The control group underwent routine ophthalmological and ocular fundus examinations; diagnostic results were normal. The experiment received confirmed consent from the local ethic committee, and all patients provided informed consent. METHODS： BOLD-fMRI and DTI manifestations in the lesion group were observed before and after hyperbaric oxygen intervention, and the results were compared with the control group. The subjects were positioned on their back, and BOLD-fMRI images were collected with the following GRE EPI sequence： TR = 2

关键词： vision functional magnetic resonance imaging diffusion tensor imaging hyperbaric oxygen therapy

己二酸二酯原位功能化SiO2稳定Pickering乳液的相反转研究

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高等学校化学学报 2020年第1期41卷 140-144页

作者：陈静陈进华尹德忠张伟西北工业大学理学院西安710072 西北工业大学长三角研究院苏州215400

研究了原位改性SiO2稳定的己二酸二酯⁃水体系的乳液相反转特性,探究了不同己二酸二酯分子对SiO2的功能化改性能力.研究发现,己二酸二酯的烷基链长对乳化行为有重要影响,长分子链二酯倾向于形成O/W乳液,而短分子链二酯则倾向于形成W/O型... 详细信息

研究了原位改性SiO2稳定的己二酸二酯⁃水体系的乳液相反转特性,探究了不同己二酸二酯分子对SiO2的功能化改性能力.研究发现,己二酸二酯的烷基链长对乳化行为有重要影响,长分子链二酯倾向于形成O/W乳液,而短分子链二酯则倾向于形成W/O型乳液.结果表明,短分子链的己二酸二酯对SiO2粒子的原位功能化改性效果更好,其原因在于短分子链的己二酸二酯空间位阻较小,酯基与Si—OH形成氢键能力较强.改性SiO2的红外光谱证明了SiO2表面不同己二酸二酯的数量变化.碱性条件下乳液稳定特性再次证实了所提出的机理.

关键词： Pickering乳液相反转表面改性己二酸二烷基酯

低血糖生成指数饮食对社区初发肥胖2型糖尿病患者血糖的影响

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糖尿病新世界 2024年第3期27卷 20-24页

作者：谌金花刘言曾书勤罗洪林王意君赵昕怡伍悦蕾成都市第一人民医院全科医学科四川成都610041 成都市第一人民医院临床营养科四川成都610041 成都高新区石羊社区卫生服务中心四川成都610041 成都高新区中和社区卫生服务中心四川成都610041 成都市第一人民医院内分泌代谢科四川成都610041

目的探讨低血糖生成指数(Low Glycemic Index,LGI)饮食对初发肥胖2型糖尿病(Type 2 Diabetes Mellitus,T2DM)体质量、血脂、血糖和膳食结构的影响。方法选取成都高新区石羊社区卫生服务中心和成都高新区中和社区卫生服务中心于2023年4—... 详细信息

目的探讨低血糖生成指数(Low Glycemic Index,LGI)饮食对初发肥胖2型糖尿病(Type 2 Diabetes Mellitus,T2DM)体质量、血脂、血糖和膳食结构的影响。方法选取成都高新区石羊社区卫生服务中心和成都高新区中和社区卫生服务中心于2023年4—6月收治的130例初发肥胖2型糖尿病患者作为研究对象,采用随机数表法分为LGI组和对照组。比较两组患者干预前后的体质量、体质指数(Body Mass Index,BMI)、血糖、血脂指标及膳食结构。结果干预3个月后,LGI组的体质指数和体质量较对照组显著降低,分别为(26.84±1.20)kg/m2和(73.85±7.67)kg,差异有统计学意义(t=7.557、2.124,P均<0.05)。LGI组的空腹血糖、餐后2 h血糖、糖化血红蛋白和血脂指标也显著优于对照组,LGI饮食组的每日能量摄入、脂肪供能比、油和盐的摄入与对照组相比显著减少,LGI饮食组的蛋白质供能比、碳水化合物供能比、维生素C和膳食纤维显著均高于对照组,差异有统计学意义(P均<0.05)。结论结合本区域饮食习惯,LGI饮食干预可改善初发肥胖T2DM患者的体质量、血糖和血脂代谢指标。

关键词：低血糖指数饮食干预 2型糖尿病

Up-regulation of glycolipid transfer protein by bicyclol causes spontaneous restriction of hepatitis C virus replication

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Acta Pharmaceutica Sinica B 2019年第4期9卷 769-781页

作者： Meng-Hao Huang Hu Li Rong Xue Jianrui Li Lihua Wang Junjun cheng Zhouyi Wu Wenjing Li jinhua chen Xiaoqin Lv Qiang Li Pei Lan Limin Zhao Yongfeng Yang Zonggen Peng Jiandong Jiang Institute of Medicinal Biotechnology Chinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100050China Department of Liver Diseases the Second Hospital of NanjingSoutheast UniversityNanjing 210003China State Key Laboratory of Bioactive Substance and Function of Natural Medicines Institute of Materia MedicaChinese Academy of Medical Sciences&Peking Union Medical CollegeBeijing 100050China

Bicyclol is a synthetic drug for hepatoprotection in clinic since 2004. Preliminary clinical observations suggest that bicyclol might be active against hepatitis C virus(HCV) with unknown mechanism. Here, we showed that bicyclol significantly inhibited HCV replication in vitro and in hepatitis C patients. Using bicyclol as a probe, we identified glycolipid transfer protein(GLTP) to be a novel restrictive factor for HCV replication. The GLTP preferentially bound host vesicle-associated membrane protein-associated protein-A(VAP-A) in competition with the HCV NS5 A, causing an interruption of the complex formation between VAP-A and HCV NS5 A. As the formation of VAP-A/NS5 A complex is essential for viral RNA replication, up-regulation of GLTP by bicyclol reduced the level of VAP-A/NS5 A complex and thus inhibited HCV replication. Bicyclol also exhibited an inhibition on HCV variants resistant to direct-acting antiviral agents(DAAs) with an efficacy identical to that on wild type HCV. In combination with bicyclol, DAAs inhibited HCV replication in a synergistic fashion. GLTP appears to be a newly discovered host restrictive factor for HCV replication, Up-regulation of GLTP causes spontaneous restriction of HCV replication.

关键词： Bicyclol Hepatitis C virus Glycolipid transfer protein Host restrictive factor Protein interaction