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热处理北山花岗岩变形特性试验与损伤力学分析

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岩土力学 2016年第12期37卷 3427-3436,3454页

作者：胡少华章光张淼姜秀玲陈益峰武汉理工大学资源与环境工程学院湖北武汉430070 武汉大学水资源与水电工程科学国家重点实验室湖北武汉430072

温度与荷载共同作用下岩石力学行为和损伤特性的研究,对于深入认识高放废物处置库围岩在热-力耦合作用下的渐进破坏规律具有重要意义。以国内高放废物处置库预选区甘肃北山花岗岩为研究对象,通过开展不同热处理温度后的物理力学性质测试... 详细信息

温度与荷载共同作用下岩石力学行为和损伤特性的研究,对于深入认识高放废物处置库围岩在热-力耦合作用下的渐进破坏规律具有重要意义。以国内高放废物处置库预选区甘肃北山花岗岩为研究对象,通过开展不同热处理温度后的物理力学性质测试,并借助偏光显微和X射线衍射细微观分析手段,对其宏观变形、损伤演化以及破坏特征开展了研究。研究结果表明:随着热处理温度的升高,质量、密度、纵波波速和峰值强度总体呈下降的趋势,而体积和峰值应变则逐渐增大,1 000℃时不同围压下的峰值强度分别减小了77.70%、57.28%、37.33%及33.97%,峰值应变分别增加了196.37%、115.27%、105.13%及90.38%。在低温、低围压下三轴压缩过程中北山花岗岩的损伤发展迅速,破坏形式以张拉劈裂为主,且试样破坏后极为破碎,在破坏面附近存在多条贯通的轴向裂纹;随着温度和围压的增大,北山花岗岩的变形由脆性向塑性转变,破坏形式都是陡倾角的剪切破坏。

关键词：北山花岗岩高温热处理物理力学特性变形破坏特征损伤演化

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西藏亚东鲑的胚胎发育

水产学报 2006年第3期30卷 289-296页

作者：豪富华陈毅峰蔡斌中国科学院水生生物研究所西藏自治区农牧厅

通过对2002年12月-2003年3月养殖的亚东鲑胚胎进行观察,并结合1999年12月-2000年5月和2000年12月-2001年5月所取样品的对照,对其胚胎发育的过程进行了详细描述。根据胚胎发育的外部形态及典型特征将亚东鲑胚胎发育过程分为10个时期;在... 详细信息

通过对2002年12月-2003年3月养殖的亚东鲑胚胎进行观察,并结合1999年12月-2000年5月和2000年12月-2001年5月所取样品的对照,对其胚胎发育的过程进行了详细描述。根据胚胎发育的外部形态及典型特征将亚东鲑胚胎发育过程分为10个时期;在平均水温4.3℃条件下,从受精到出膜需要大约339.7447.2积温(度.日)不等;胚胎发育的天数与积温呈明显的线性相关;胚胎发育的各期对外界环境的敏感性不同,体节形成至发眼前期这一阶段对外环境比较敏感;不同大小的卵对孵化率没有显著影响;出膜时仔鱼的平均大小为(13.09±0.90)mm之间。

关键词：亚东鲑西藏胚胎发育积温孵化率

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基于准谐振原理的交流退磁电源控制器

电力电子技术 2019年第11期53卷 34-35页

作者：陈一逢陈力苏坚坚厦门市爱维达电子有限公司

近年来,随着电动汽车及机器人领域永磁同步电机的大量使用,导致开发和生产硬磁材料的相关产业高速发展。其中用于硬磁材料的充退磁设备是产业中的关键设备之一。此处在分析交流退磁的基本原理基础上,使用准比例谐振(PR)控制器,实现了交... 详细信息

近年来,随着电动汽车及机器人领域永磁同步电机的大量使用,导致开发和生产硬磁材料的相关产业高速发展。其中用于硬磁材料的充退磁设备是产业中的关键设备之一。此处在分析交流退磁的基本原理基础上,使用准比例谐振(PR)控制器,实现了交流退磁电源退磁电流(磁场强度)的精确跟踪。基于准PR控制器的传递函数,通过3个参数的设计,对传递函数离散化即可实现数字控制。

关键词：控制器准比例谐振退磁

Depression mechanism of sulfite ions on sphalerite and Pb^(2+)activated sphalerite in the flotation separation of galena from sphalerite

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 335-345页

作者： feng Zhang chenyang Zhang Linlin Wu Wei Sun Hongliang Zhang Jianhua chen Yong Pei Songjiang Li Engineering Research Center of Ministry of Education for Carbon Emission Reduction in Metal Resource Exploitation and Utilization Hunan International Joint Research Center for Efficient and Clean Utilization of Critical Metal Mineral ResourcesSchool of Minerals Processing and BioengineeringCentral South UniversityChangsha 410083China State Key Laboratory of Mineral Processing Beijing General Research Institute of Mining&MetallurgyBeijing 100160China Hunan Provincial Key Laboratory of Micro&Nano Materials Interfaces Science College of Chemistry and Chemical EngineeringCentral South UniversityChangsha 410083China School of Resources Environment and MaterialsGuangxi UniversityNanning 530004China Department of Chemistry Xiangtan UniversityXiangtan 411105China China Railway Resource Group Co.Ltd Beijing 102300China

The depression mechanism of sulfite ions on sphalerite and Pb^(2+)activated sphalerite in the flotation separation of galena from sphalerite still lacked in-depth ***,the depression mechanism of sulfite ions on sphalerite and Pb^(2+)activated sphalerite in the flotation separation of galena from sphalerite was further systematically investigated with experiments and density functional theory(DFT)*** X-ray photoelectric spectroscopy(XPS)results,DFT calculation results,and frontier molecular orbital analysis indicated that sulfite ions were difficult to be adsorbed on sphalerite surface,suggesting that sulfite ions achieved depression effects on sphalerite through other non-adsorption ***,the oxygen content in the surface of sphalerite treated with sulfite ions in creased,which enhanced the hydrophilicity of the sphalerite and further increased the difference in hydrophilicity between sphalerite and ***,sulfite ions were chelated with lead ions to form PbSO_(3)in *** hydrophilic PbSO_(3)was more easily adsorbed on sphalerite than *** interaction between sulfite ions and lead ions could effectively inhibit the activation of *** addition the UV spectrum showed that after adding sulfite ions,the peak of perxanthate in the sphalerite treated xanthate solution was significantly stronger than that in the galena with xanthate solution,indicating that xanthate interacted more readily with sulfite ions and oxygen mo lecules within the sphalerite system,leading to the formation of ***,sulfite ions hardly depressed the flotation of ga lena and could promote the flotation of galena to some *** study deepened the understanding of the depression mechanism o sulfite ions on sphalerite and Pb^(2+)activated sphalerite.

关键词： sphalerite galena sulfite ion density functional theory depression mechanism

Metabolic reprogramming: a new option for the treatment of spinal cord injury

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Neural Regeneration Research 2025年第4期20卷 1042-1057页

作者： Jiangjie chen Jinyang chen Chao Yu Kaishun Xia Biao Yang Ronghao Wang yi Li Kesi Shi Yuang Zhang Haibin Xu Xuesong Zhang Jingkai Wang Qixin chen chengzhen Liang Department of Orthopedics The Second Affiliated Hospital of Zhejiang University School of MedicineHangzhouZhejiang ProvinceChina Orthopedics Research Institute of Zhejiang University Zhejiang UniversityHangzhouZhejiang ProvinceChina Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province HangzhouZhejiang ProvinceChina Clinical Research Center of Motor System Disease of Zhejiang Province HangzhouZhejiang ProvinceChina Qiandongnan Prefecture People’s Hospital KailiGuizhou ProvinceChina Department of Orthopedics Fourth Medical CenterChinese PLA General HospitalBeijingChina

Spinal cord injuries impose a notably economic burden on society,mainly because of the severe after-effects they *** the ongoing development of various therapies for spinal cord injuries,their effectiveness remains ***,a deeper understanding of metabolism has opened up a new therapeutic opportunity in the form of metabolic *** this review,we explore the metabolic changes that occur during spinal cord injuries,their consequences,and the therapeutic tools available for metabolic *** spinal cord metabolism is characterized by independent cellular metabolism and intercellular metabolic ***,spinal cord injury results in metabolic disorders that include disturbances in glucose metabolism,lipid metabolism,and mitochondrial *** metabolic disturbances lead to corresponding pathological changes,including the failure of axonal regeneration,the accumulation of scarring,and the activation of *** rescue spinal cord injury at the metabolic level,potential metabolic reprogramming approaches have emerged,including replenishing metabolic substrates,reconstituting metabolic couplings,and targeting mitochondrial therapies to alter cell *** available evidence suggests that metabolic reprogramming holds great promise as a next-generation approach for the treatment of spinal cord *** further advance the metabolic treatment of the spinal cord injury,future efforts should focus on a deeper understanding of neurometabolism,the development of more advanced metabolomics technologies,and the design of highly effective metabolic interventions.

关键词： axons glycolysis metabolic reprogramming metabolism mitochondria neural regeneration neuroprotection oxidative phosphorylation spinal cord injury therapy

高乌甲素对S180荷瘤小鼠的免疫调节作用研究

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中国药房 2008年第30期19卷 2343-2344页

作者：胡建楣陈凤仪广州市番禺区人民医院药剂科广州市511400

目的:研究高乌甲素(LA)对S180荷瘤小鼠的免疫调节作用。方法:每只小鼠腋窝皮下接种S180荷瘤生理盐水混悬液,24h后肌肉注射LA,每天给药1次,连续10d。检测S180荷瘤小鼠的免疫功能。结果:LA能显著升高S180荷瘤小鼠血清免疫球蛋白G(IgG)抗... 详细信息

目的:研究高乌甲素(LA)对S180荷瘤小鼠的免疫调节作用。方法:每只小鼠腋窝皮下接种S180荷瘤生理盐水混悬液,24h后肌肉注射LA,每天给药1次,连续10d。检测S180荷瘤小鼠的免疫功能。结果:LA能显著升高S180荷瘤小鼠血清免疫球蛋白G(IgG)抗体水平;对2,4-二硝基氟苯诱导的迟发性超敏反应有增强作用;能诱导淋巴细胞转化为淋巴母细胞;能显著提高S180荷瘤小鼠网状内皮系统的吞噬功能;且能增强其红细胞免疫功能。结论:LA对小鼠S180荷瘤的生长具有抑制作用,能显著增强S180荷瘤小鼠的细胞免疫功能。

关键词：高乌甲素细胞免疫功能 S180荷瘤小鼠

乳结平胶囊对乳腺增生大鼠乳腺组织ER、PR表达的影响

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中国药房 2008年第27期19卷 2098-2101页

作者：陈凤仪胡建楣广州市番禺区人民医院药剂科广州市511400

目的:探讨乳结平胶囊对乳腺增生大鼠病理组织雌激素受体(ER)和孕酮受体(PR)表达的影响。方法:先采用苯甲酸雌二醇注射液连续im25d,后改用黄体酮注射液连续im5d,从而建立大鼠乳腺增生模型,以三苯氧胺为阳性对照药物,用乳结平胶囊高、低... 详细信息

目的:探讨乳结平胶囊对乳腺增生大鼠病理组织雌激素受体(ER)和孕酮受体(PR)表达的影响。方法:先采用苯甲酸雌二醇注射液连续im25d,后改用黄体酮注射液连续im5d,从而建立大鼠乳腺增生模型,以三苯氧胺为阳性对照药物,用乳结平胶囊高、低剂量治疗30d。结果:三苯氧胺组及乳结平胶囊高、低剂量组均能减轻大鼠乳头红肿或增生症状,降低大鼠血清雌二醇(E2)、催乳素(PRL)水平及升高孕酮(P)水平,降低子宫指数,明显减少导管上皮细胞层数和腺泡数,同时减少乳腺组织ER、PR的含量,抑制乳腺组织增生。结论:乳结平胶囊可通过调节雌激素水平,改善增生乳腺的病理形态变化,从而有效治疗大鼠乳腺增生。

关键词：乳结平胶囊乳腺增生雌激素受体孕酮受体大鼠