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国有资产管理模式改革探讨

学习与探索 2005年第6期 213-215页

作者：肖海晶黑龙江省社会科学院学习与探索杂志社黑龙江哈尔滨150001

我国实行的国有资产分级管理模式存在着各级管理机构定位不清,国有资产管理机构职责不明,国企和非国企地位不明确等诸多问题,不符合WTO规则和市场经济发展的要求。国有资产管理应以实现国有资本的保值增值为目的。国有资产管理模式必须... 详细信息

我国实行的国有资产分级管理模式存在着各级管理机构定位不清,国有资产管理机构职责不明,国企和非国企地位不明确等诸多问题,不符合WTO规则和市场经济发展的要求。国有资产管理应以实现国有资本的保值增值为目的。国有资产管理模式必须实现由国有资产管理向国有资本运营转变,实现向国有资产管理模式的“管资本”目标转变,使国有资本在扩张中能够保值增值。

关键词：国有资产资本运营管理模式国有资本

Highly conductive and stable iodine doped argyrodite electrolyte for all-solid-state lithium batteries

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Journal of Energy Chemistry 2025年第1期100卷 50-58页

作者： Gaozhan Liu jing Zhang jing Yang jinghui Chen Xingyue xiao Xiayin Yao Ningbo Institute of Materials Technology and Engineering Chinese Academy of Sciences Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of Sciences

Lithium argyrodites with high ionic conductivity and low cost are considered as one of the most prospective solid electrolytes for all-solid-state lithium ***,the poor chemical stability and compatibility with lithium metal limit their ***,Li5.4PS4.4Cl1.4I0.2solid electrolyte with high ionic conductivity of 11.49 m S cm-1and improved chemical stability is synthesized by iodine *** ultra-thin Li5.4PS4.4Cl1.4I0.2membrane with thickness of 10μm can be obtained by wet coating process,exhibiting a high ionic conductivity of 2.09 mS cm-1and low areal resistance of 1.17Ω***,iodine doping could in-situ form LiI at the lithium/electrolyte interface and improve the critical current density of Li5.4PS4.4Cl1.6from 0.8 to 1.35 mA *** resultant LiCoO2/Li5.4PS4.4Cl1.4I0.2/Li battery shows excellent cycling stability at 1 C,with a reversible specific capacity of 110.1 mA h g-1and a retention of 80.5% after 1000 *** addition,the assembled LiCoO2/Li5.4PS4.4Cl1.4I0.2membrane/Li pouch cell delivers an initial discharge capacity of 110.4 mA h g-1and 80.5% capacity retention after 100 cycles.

关键词： Argyrodite electrolytes Iodine doping Ionic conductivity Stability All-solid-state lithium battery

miRNA-21-5p is an important contributor to the promotion of injured peripheral nerve regeneration using hypoxia-pretreated bone marrow-derived neural crest cells

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Neural Regeneration Research 2025年第1期20卷 277-290页

作者： Meng Cong jing-jing Hu Yan Yu xiao-Li Li xiao-Ting Sun Li-Ting Wang Xia Wu Ling-Jie Zhu xiao-Jia Yang Qian-Ru He Fei Ding hai-Yan Shi School of Medicine Nantong UniversityNantongJiangsu ProvinceChina Key Laboratory of Neuroregeneration of Jiangsu and Ministry of Education and Coinnovation Center of Neuroregeneration Nantong UniversityNantongJiangsu ProvinceChina Department of Physiology Jiangsu Health Vocational CollegeNanjingJiangsu ProvinceChina Department of Pathology Affiliated Hospital of Nantong UniversityNantongJiangsu ProvinceChina Jiangsu Clinical Medicine Center of Tissue Engineering and Nerve Injury Repair Affiliated Hospital of Nantong UniversityNantongJiangsu ProvinceChina

Our previous study found that rat bone marrow–derived neural crest cells(acting as Schwann cell progenitors)have the potential to promote long-distance nerve ***-based therapy can enhance peripheral nerve repair and regeneration through paracrine bioactive factors and intercellular ***,the complex contributions of various types of soluble cytokines and extracellular vesicle cargos to the secretome remain *** investigate the role of the secretome and extracellular vesicles in repairing damaged peripheral nerves,we collected conditioned culture medium from hypoxia-pretreated neural crest cells,and found that it significantly promoted the repair of sensory neurons damaged by oxygen-glucose *** mRNA expression of trophic factors was highly expressed in hypoxia-pretreated neural crest *** performed RNA sequencing and bioinformatics analysis and found that miR-21-5p was enriched in hypoxia-pretreated extracellular vesicles of neural crest ***,to further clarify the role of hypoxia-pretreated neural crest cell extracellular vesicles rich in miR-21-5p in axonal growth and regeneration of sensory neurons,we used a microfluidic axonal dissociation model of sensory neurons in vitro,and found that hypoxia-pretreated neural crest cell extracellular vesicles promoted axonal growth and regeneration of sensory neurons,which was greatly dependent on loaded ***,we constructed a miR-21-5p-loaded neural conduit to repair the sciatic nerve defect in rats and found that the motor and sensory functions of injured rat hind limb,as well as muscle tissue morphology of the hind limbs,were obviously *** findings suggest that hypoxia-pretreated neural crest extracellular vesicles are natural nanoparticles rich in ***-21-5p is one of the main contributors to promoting nerve regeneration by the neural crest cell *** helps to explain the mechanism of action of the secretome and e

关键词： axotomy cell-free therapy conditioned medium extracellular vesicles hypoxic preconditioning microRNA oxygen-glucose deprivation peripheral nerve injury Schwann cell precursors

Effects of aggregate size distribution and carbon nanotubes on the mechanical properties of cemented gangue backfill samples under true triaxial compression

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International Journal of Minerals,Metallurgy and Materials 2025年第2期32卷 311-324页

作者： Qian Yin Fan Wen Zhigang Tao hai Pu Tianci Deng Yaoyao Meng Qingbin Meng Hongwen jing Bo Meng Jiangyu Wu State Key Laboratory of Intelligent Construction and Healthy Operation and Maintenance of Deep Underground Engineering China University of Mining and TechnologyXuzhou 221116China State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines Anhui University of Science and TechnologyHuainan 232001China State Key Laboratory for Geomechanics&Deep Underground Engineering China University of Mining and Technology(Beijing)Beijing 100083China Key Laboratory of Xinjiang Coal Resources Green Mining Ministry of EducationXinjiang Institute of EngineeringUrumqi 830023China

The mechanical behavior of cemented gangue backfill materials(CGBMs)is closely related to particle size distribution(PSD)of aggregates and properties of cementitious ***,the true triaxial compression tests,CT scanning,SEM,and EDS tests were conducted on cemented gangue backfill samples(CGBSs)with various carbon nanotube concentrations(P_(CNT))that satisfied fractal theory for the PSD of *** mechanical properties,energy dissipations,and failure mechanisms of the CGBSs under true triaxial compression were systematically *** results indicate that appropriate carbon nanotubes(CNTs)effectively enhance the mechanical properties and energy dissipations of CGBSs through micropore filling and microcrack bridging,and the optimal effect appears at P_(CNT)of 0.08wt%.Taking PSD fractal dimension(D)of 2.500 as an example,compared to that of CGBS without CNT,the peak strength(σ_(p)),axial peak strain(ε_(1,p)),elastic strain energy(Ue),and dissipated energy(U_(d))increased by 12.76%,29.60%,19.05%,and90.39%,***,excessive CNTs can reduce the mechanical properties of CGBSs due to CNT agglomeration,manifesting a decrease inρ_(p),ε_(1,p),and the volumetric strain increment(Δε_(v))when P_(CNT)increases from 0.08wt%to 0.12wt%.Moreover,the addition of CNTs improved the integrity of CGBS after macroscopic failure,and crack extension in CGBSs appeared in two modes:detour and pass through the ***σ_(p)and U_(d)firstly increase and then decrease with increasing D,and porosity shows the opposite ***ε_(1,p)andΔε_(v)are negatively correlated with D,and CGBS with D=2.150 has the maximum deformation parameters(ε_(1,p)=0.05079,Δε_(v)=0.01990)due to the frictional slip effect caused by coarse *** increasing D,the failure modes of CGBSs are sequentially manifested as oblique shear failure,"Y-shaped"shear failure,and conjugate shear failure.

关键词： cemented gangue backfill materials particle size distribution true triaxial compression test carbon nanotubes mechanical properties failure modes

电离辐射诱导人正常角化细胞衰老死亡的作用机制研究

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中国现代医学杂志 2013年第15期23卷 19-22页

作者：肖海静董庆华武汉市中心医院湖北武汉430020 浙江大学医学院附属邵逸夫医院中心实验室浙江杭州310016

目的研究电离辐射对人正常角化细胞的影响,探讨放射治疗引起口腔黏膜炎的可能作用机制。方法原代培养正常人角化细胞在5 Gy辐射后,SAβ-Gal染色法检测细胞衰老情况,CM-H2DCF-DH染色法检测细胞活性氧产生情况,实时荧光定量PCR检测氧化酶... 详细信息

目的研究电离辐射对人正常角化细胞的影响,探讨放射治疗引起口腔黏膜炎的可能作用机制。方法原代培养正常人角化细胞在5 Gy辐射后,SAβ-Gal染色法检测细胞衰老情况,CM-H2DCF-DH染色法检测细胞活性氧产生情况,实时荧光定量PCR检测氧化酶基因表达情况,γ-H2AX免疫荧光染色检测细胞DNA修复能力。结果电离辐射可引起人正常角化细胞衰老死亡,细胞内活性氧大量产生,氧化酶基因表达明显增高,细胞DNA双链断裂。结论电离辐射引起的正常角化细胞衰老死亡与活性氧产生和DNA损伤有关,这可能是放射治疗引起口腔黏膜炎的作用机制之一。

关键词：电离辐射人正常角化细胞活性氧 DNA修复

肾移植后不同免疫抑制剂抗排斥反应的临床应用及不良反应

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中国组织工程研究 2012年第18期16卷 3383-3386页

作者：肖海静武汉市中心医院湖北省武汉市430014

背景:如何利用免疫抑制剂之间的协同作用,发挥最佳疗效是肾移植后抗排斥反应的关键所在,如何做到个体化用药,提高疗效避免不良反应的发生显得尤为重要。目的:评价不同免疫抑制剂对肾移植受者和移植肾存活的影响,以便更好地避免药物不良... 详细信息

背景:如何利用免疫抑制剂之间的协同作用,发挥最佳疗效是肾移植后抗排斥反应的关键所在,如何做到个体化用药,提高疗效避免不良反应的发生显得尤为重要。目的:评价不同免疫抑制剂对肾移植受者和移植肾存活的影响,以便更好地避免药物不良反应。方法:应用计算机检索1999-01/2009-10CNKI数据库相关文献,检索词为"免疫抑制剂,肾移植,排斥反应"。选择文章内容与肾移植免疫抑制剂有关者,同一领域文献则选择近期发表或发表在权威杂志文章,入选25篇文献进行综述。结果与结论:任何一种免疫抑制剂在发挥免疫抑制作用时都会伴有一定毒副作用,临床上应尽量避免不良反应发生。联合用药抗排斥反应已达成共识,事实证明无论采用何种联合方式,均有单一用药无可替代的优势。如何利用免疫抑制药之间的协同作用,发挥最佳疗效是临床关键所在,医生应严密监测患者血药浓度,做到个体化用药,尽可能降低肾移植后排斥反应发生率。

关键词：免疫抑制剂肾移植排斥反应环孢素A 吗替麦考酚酯他克莫司

Laparoscopic liver resection utilizing the ventral avascular area of the inferior vena cava:A retrospective cohort study

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World Journal of Gastroenterology 2025年第1期31卷 42-57页

作者： Kun Huang Zhu Chen Heng xiao hai-Yang Hu Xing-Yu Chen Cheng-You Du Xiang Lan Department of Hepatobiliary Surgery The First Affiliated Hospital of Chongqing Medical UniversityChongqing 400000China Department of General Surgery Mianyang Hospital of Traditional Chinese MedicineMianyang 621000Sichuan ProvinceChina

BACKGROUND Laparoscopic liver resection(LLR)can be challenging due to the difficulty of establishing a retrohepatic tunnel under *** the third hepatic hilum before parenchymal transection often leads to significant liver mobilization,tumor compression,and bleeding from the short hepatic veins(SHVs).This study introduces a novel technique utilizing the ventral avascular area of the inferior vena cava(IVC),allowing SHVs to be addressed after parenchymal transection,thereby reducing surgical complexity and improving outcomes in in situ *** To introduce and evaluate a novel LLR technique using the ventral avascular area of the IVC and compare its short-term outcomes with conventional *** The clinical cohort data of patients with pathologically confirmed hepatocellular carcinoma or intrahepatic cholangiocarcinoma who underwent conventional LLR and novel LLR between July 2021 and July 2023 at the First Affiliated Hospital of Chongqing Medical University were retrospectively *** novel LLR,we initially separated the caudate lobe from the IVC using dissecting forceps along the ventral avascular area of the ***,we transected the parenchyma of the left and right caudate lobes from the caudal side to the cephalic side using the avascular area as a ***,we addressed the SHVs and finally dissected the root of the right hepatic vein or left hepatic *** short-term postoperative outcomes and oncological results of the two approaches were evaluated and *** A total of 256 patients were included,with 150(58.59%)undergoing conventional LLR and 106(41.41%)undergoing novel *** novel technique resulted in significantly larger tumor resections(6.47±2.96 cm vs 4.01±2.33 cm,P<0.001),shorter operative times(199.57±60.37 minutes vs 262.33±83.90 minutes,P<0.001),less intraoperative blood loss(206.92±37.09 mL vs 363.34±131.27 mL,P<0.001),and greater resection volume(345.11±31.40 mL vs 264.38±31.98 mL,P<0.001)comp

关键词： Laparoscopic liver resection Inferior vena cava Retrohepatic tunnel Short hepatic veins Complex liver tumors Intraoperative bleeding control

Effects of the extrusion parameters on microstructure,texture and room temperature mechanical properties of extruded Mg-2.49Nd-1.82Gd-0.2Zn-0.2Zr alloy

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 136-146页

作者： Chenjin Zhang Guangyu Yang Lei xiao Zhiyong Kan jing Guo Qiang Li Wanqi Jie State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi’an 710072China College of Materials Science and Engineering Fuzhou UniversityFuzhou 350108China College of Chemistry and Environmental Science Qujing Normal UniversityQujing 655011China

Microstructure,texture,and mechanical properties of the extruded Mg-2.49Nd-1.82Gd-0.2Zn-0.2Zr alloy were investigated at different extrusion temperatures(260 and 320℃),extrusion ratios(10:1,15:1,and 30:1),and extrusion speeds(3 and 6 mm/s).The experimental results exhibited that the grain sizes after extrusion were much finer than that of the homogenized alloy,and the second phase showed streamline distribution along the extrusion direction(ED).With extrusion temperature increased from 260 to 320℃,the microstructure,texture,and mechanical properties of alloys changed *** dynamic recrystallization(DRX)degree and grain sizes enhanced as the extrusion ratio increased from 10:1 to 30:1,and the strength gradually decreased but elongation(EL)*** the extrusion speed increased from 3 to 6 mm/s,the grain sizes and DRX degree increased significantly,and the samples presented the typical-rare-earth(RE)*** alloy extruded at 260℃ with extrusion ratio of 10:1 and extrusion speed of 3 mm/s showed the tensile yield strength(TYS)of 213 MPa and EL of 30.6%.After quantitatively analyzing the contribution of strengthening mechanisms,it was found that the grain boundary strengthening and dislocation strengthening played major roles among strengthening *** results provide some guidelines for enlarging the industrial application of extruded Mg-RE alloy.

关键词： Mg-rare earth alloys extrusion temperature extrusion ratio extrusion speed strengthening mechanisms

结合分区和改进ICP的三维颅骨自动配准算法

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小型微型计算机系统 2018年第4期39卷 631-637页

作者：史重阳刘晓宁罗星海胡晓静耿国华西北大学信息科学与技术学院西安710127

颅骨配准是统计颅面复原过程的重要步骤之一.在建立颅骨数据库以及后续的相似性颅骨检索中,都需要进行颅骨配准.针对现有的颅骨配准方法准确度和效率不高造成复原效果不理想的问题,本文提出一种结合分区和改进迭代最近点算法(ICP)的三... 详细信息

颅骨配准是统计颅面复原过程的重要步骤之一.在建立颅骨数据库以及后续的相似性颅骨检索中,都需要进行颅骨配准.针对现有的颅骨配准方法准确度和效率不高造成复原效果不理想的问题,本文提出一种结合分区和改进迭代最近点算法(ICP)的三维颅骨自动配准算法.首先根据Voronoi图对颅骨进行区域划分,计算得到每个区域的质心,并作为区域配准的基本单位,根据Euclidean距离和k近邻(KNN)算法实现区域匹配;然后对每对匹配区域运用随机抽样一致算法(RANSAC)选出四对共面的匹配点对,并进行变换矩阵和最大化公共点集(LCP)的求解,根据LCP值得到最优变换矩阵,组合所有区域对的最优变换矩阵求得全局最优变换矩阵,完成初始配准;最后,在ICP算法中设置动态估计(Destimation)来有效剔除误匹配点对,以均方根误差(RMSE)作为配准误差,完成精确配准.实验结果表明,本文算法与基于区域中稀疏ICP算法和基于曲率图中的经典ICP算法对比,迭代收敛性更好,配准准确度有明显的提高,配准的时间复杂度显著降低.

关键词：颅骨配准随机抽样一致算法颅骨分区动态估计迭代最近点算法