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Hierarchically porous carbon foams for electric double layer capacitors

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Nano Research 2016年第10期9卷 2875-2888页

作者： Feng Zhan Tianyu Liu Guihua Hou Tianyi kou Lu Yue Rongfeng Guan Yat Li Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province Yancheng Institute of Technology Yancheng 224051 China Department of Chemistry and Biochemistry University of California Santa Cruz 1156 High Street Santa Cruz CA 95064 USA

The growing demand for portable electronic devices means that lightweight power sources are increasingly sought after. Electric double layer capacitors （EDLCs） are promising candidates for use in lightweight power sources due to their high power densities and outstanding charge/discharge cycling stabilities. Three-dimensional （3D） self-supporting carbon-based materials have been extensively studied for use in lightweight EDLCs. Yet, a major challenge for 3D carbon electrodes is the limited ion diffusion rate in their internal spaces. To address this limitation, hierarchically porous 3D structures that provide additional channels for internal ion diffusion have been proposed. Herein, we report a new chemical method for the synthesis of an ultralight （9.92 mg/cm3） 3D porous carbon foam （PCF） involving carbonization of a glutaraldehyde- cross-linked chitosan aerogel in the presence of potassium carbonate. Electron microscopy images reveal that the carbon foam is an interconnected network of carbon sheets containing uniformly dispersed macropores. In addition, Brunauer-Emmett-Teller measurements confirm the hierarchically porous structure. Electrochemical data show that the PCF electrode can achieve an outstanding gravimetric capacitance of 246.5 F/g at a current density of 0.5 A/g, and a remarkable capacity retention of 67.5% was observed when the current density was increased from 0.5 to 100A/g. A quasi-solid-state symmetric supercapacitor was fabricated via assembly of two pieces of the new PCF and was found to deliver an ultra-high power density of 25 kW/kg at an energy density of 2.8 Wh/kg. This study demonstrates the synthesis of an ultralight and hierarchically porous carbon foam with high capacitive performance.

关键词： hierarchically porouss tructure glutaraldehyde-crosslinked chitosan light weight carbon foam electrical double layer capacitors

Reinnervation of spinal cord anterior horn cells after median nerve repair using transposition with other nerves

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Neural Regeneration Research 2019年第4期14卷 699-705页

作者： Yu-song Yuan Su-Ping Niu You-Lai Yu Pei-Xun Zhang Xiao-Feng Yin Na Han Ya-Jun Zhang Dian-Ying Zhang Hai-Lin Xu Yu-Hui kou Bao-Guo Jiang Peking University People's Hospital The Affiliated Hospital of Xuzhou Medical University

Our previous studies have confirmed that during nerve transposition repair to injured peripheral nerves, the regenerated nerve fibers of motor neurons in the anterior horn of the spinal cord can effectively repair distal nerve and target muscle tissue and restore muscle motor function. To observe the effect of nerve regeneration and motor function recovery after several types of nerve transposition for median nerve defect(2 mm), 30 Sprague-Dawley rats were randomly divided into sham operation group, epineurial neurorrhaphy group, musculocutaneous nerve transposition group, medial pectoral nerve transposition group, and radial nerve muscular branch transposition group. Three months after nerve repair, the wrist flexion test was used to evaluate the recovery of wrist flexion after regeneration of median nerve in the affected limbs of rats. The number of myelinated nerve fibers, the thickness of myelin sheath, the diameter of axons and the cross-sectional area of axons in the proximal and distal segments of the repaired nerves were measured by osmic acid staining. The ratio of newly produced distal myelinated nerve fibers to the number of proximal myelinated nerve fibers was calculated. Wet weights of the flexor digitorum superficialis muscles were measured. Muscle fiber morphology was detected using hematoxylin-eosin staining. The cross-sectional area of muscle fibers was calculated to assess the recovery of muscles. Results showed that wrist flexion function was restored, and the nerve grew into the distal effector in all three nerve transposition groups and the epineurial neurorrhaphy group. There were differences in the number of myelinated nerve fibers in each group. The magnification of proximal to distal nerves was 1.80, 3.00, 2.50, and 3.12 in epineurial neurorrhaphy group, musculocutaneous nerve transposition group, medial pectoral nerve transposition group, and radial nerve muscular branch transposition group, respectively. Nevertheless, axon diameters of new

关键词： nerve regeneration transposition repair median nerve functional remodeling muscle atrophy surgical intervention peripheral nerve injury neural regeneration

AngiotensinⅡinduces monocyte chemoattractant protein-1 synthesis in osteoblasts

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AngiotensinⅡinduces monocyte chemoattractant protein-1 synt...

Formation of novel TRIP-ductilized bulk metallic glass composites by manipulating nucleation kinetics via minor alloying

中华医学会第五次中青年骨质疏松和骨矿盐疾病学术会议

作者： Yongtao Zhang Qichun song Kunzheng Wang Chunsheng Wang Jianqiang kou Second Affiliated Hospital of Xian Jiaotong University Department of Orthopaedics

Purpose AngiotensinⅡ(AngⅡ) significantly induced the expression of receptor activator of NF-κB ligand(RANKL) in osteoblasts,leading to the formation of *** chemoattractant protein-1(MCP-1) is a potent stimulator of...

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Rare Metals 2023年第7期42卷 2182-2188页

作者： Xi-Lai Jiang Wen-Li song Ming Yang Yuan-Bo Zhou Yan Huang Zhi-Chao Lu Yi-Bo Zhang Jie Dong Liang Wang Bo Peng Chun-Ming Hu Jin-Kui Zhao Sheng-Zhong kou Dong Ma School of Materials Science and Engineering Lanzhou University of TechnologyLanzhou730050China Institute of High Energy Physics Chinese Academy of Sciences(CAS)Beijing100049China Spallation Neutron Source Science Center Dongguan523803China Neutron Science Platform Songshan Lake Materials LaboratoryDongguan523808China State Key Laboratory for Advanced Metals and Materials University of Science and Technology BeijingBeijing100083China Institute of Physics Chinese Academy of Sciences(CAS)Beijing100190China

A series of conical bulk metallic glass composites(BMGCs)with compositions of Zr_(47)Cu_(47-x)Al_(5)Ag_(1)Ga_(x)(x=0,1,2,4;at%)were synthesized using the minor alloying method to investigate the effect of Ga addition ... 详细信息

关键词： alloying properties glass

口蹄疫病毒通用型RT-RAA-LFD快速检测方法的建立

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中国动物检疫 2024年第6期41卷 97-102页

作者：寇美玲谢佳芮李占鸿张振兴苏晓航王轶男宋建领苗海生云南省畜牧兽医科学院云南省热带亚热带动物病毒病重点实验室云南昆明650224

为建立一种操作简便、有效的口蹄疫病毒(FMDV)核酸通用型检测方法,以FMDV 3D基因为靶基因,设计标记引物及探针,建立了一种新的检测FMDV的反转录-重组酶介导链置换核酸扩增结合侧流层析试纸检测(RT-RAA-LFD)方法。该方法操作简便,耗时短... 详细信息

为建立一种操作简便、有效的口蹄疫病毒(FMDV)核酸通用型检测方法,以FMDV 3D基因为靶基因,设计标记引物及探针,建立了一种新的检测FMDV的反转录-重组酶介导链置换核酸扩增结合侧流层析试纸检测(RT-RAA-LFD)方法。该方法操作简便,耗时短,40℃35 min内即可完成检测,通过肉眼观察可判定结果;具有较好的覆盖面,能够检出我国O型、A型FMDV主要流行拓扑型病毒,与猪瘟病毒(CSFV)、猪伪狂犬病病毒(PRV)等其他猪病病原无交叉反应;对RNA标准品的最低检测限为10^(-7)拷贝/μL,敏感性较高。利用建立的FMDV RT-RAA-LFD方法对5份临床样品进行检测,其结果与RT-PCR结果一致。结果表明,本研究建立的FMDVRT-RAA-LFD方法具有快速、直观、特异强、重复性好等优点,适合在基层兽医防疫部门和养殖场推广应用。

关键词：口蹄疫病毒重组酶介导链置换核酸扩增侧流层析试纸恒温扩增快速检测

Safety and efficacy of hepatic arterial infusion chemotherapy with raltitrexed and oxaliplatin post-transarterial chemoembolization for unresectable hepatocellular carcinoma

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Journal of Interventional Medicine 2019年第2期2卷 91-96页

作者： Baojiang Liu Xu Zhu song Gao Jianhai Guo Xiaodong Wang Guang Cao Linzhong Zhu Peng Liu Haifeng Xu Hui Chen Xin Zhang Shaoxing Liu Fuxin kou Key Laboratory of Carcinogenesis and Translational Research Department of Interventional TherapyPeking University Cancer Hospital&InstituteBeijing100142China

Objective:To investigate the safety,efficacy,and prognostic factors of hepatic arterial infusion chemotherapy(HAIC)with raltitrexed and oxaliplatin post-transarterial chemoembolization(TACE)for unresectable hepatocellular carcinoma(uHCC).Methods:Thirty-seven patients with uHCC who received HAIC with raltitrexed and oxaliplatin post-TACE between June 2014 and December 2016 at our hospital were *** primary endpoint was overall survival(OS),and secondary endpoint was progression-free survival(PFS).The overall response rate(ORR)was evaluated using the modified Response Evaluation Criteria in Solid *** was assessed according to the Common Terminology Criteria for Adverse Events(v4.0).The OS and prognostic factors were analyzed using the Kaplan-Meier method,log-rank test,and Cox regression ***:Three(8.1%)patients achieved complete response,17(46.0%)patients achieved partial response,and the ORR was54.0%.The median OS and median PFS were 19.0 months and 12.0 months,*** common toxicities included grade 3-4 increased aspartate aminotransferase levels(8/37,21.6%),grade 1-2 hyperbilirubinemia(75.7%,28/37),nonspecific abdominal pain and fever,and grade 2-3 thrombocytopenia(18.9%,7/37);no patients developed grade 3-4 *** analysis showed that the tumor diameter(≤50 mm,p=0.028),Barcelona Clinic Liver Cancer(BCLC)stage(p=0.012),hepatitis B virus DNA level(p=0.033),and derived neutrophil-to-lymphocyte ratio(dNLR;derived neutrophils/leukocytes minus neutrophils)(p=0.003)were predictive factors for *** analysis showed that patients with BCLC stage B disease(p=0.029)and dNLR<2 before therapy(p=0.004)had better ***:HAIC with raltitrexed and oxaliplatin post-TACE is a safe and efficacious therapy for patients with uHCC;in particular,those with BCLC stage B and dNLR<2 have better prognosis.

关键词： Hepatocellular carcinoma Transcatheter arterial chemoembolization (TACE) Hepatic arterial infusion chemotherapy(HAIC) Oxaliplatin Raltitrexed

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36MnVS4连杆裂解加工模拟及缺陷分析

吉林大学学报（工学版） 2017年第3期47卷 861-868页

作者：寇淑清宋玮峰石舟吉林大学辊锻工艺研究所长春130022

针对具有更高疲劳强度的连杆新材料36MnVS4,开展了连杆裂解加工性能研究,并与C70S6材料进行对比,探究其裂解缺陷形成原因。依据新材料I型裂纹的脆性解理断裂特性,确定了连杆裂解K判据及最大主应力断裂失效准则,建立了预制切口条件下的... 详细信息

针对具有更高疲劳强度的连杆新材料36MnVS4,开展了连杆裂解加工性能研究,并与C70S6材料进行对比,探究其裂解缺陷形成原因。依据新材料I型裂纹的脆性解理断裂特性,确定了连杆裂解K判据及最大主应力断裂失效准则,建立了预制切口条件下的连杆裂解有限元模型。通过分析裂解过程中的应力集中和变形分布情况,获得不同材料的切口起裂位置和时间、切口附近及断面的塑性变形,结合裂纹扩展速度和裂解载荷,研究了容易导致的缺陷类型并评估了断口质量。结果表明:在相同几何参数和载荷下,因36MnVS4连杆较C70S6起裂位置分散、裂纹扩展不稳定、缺口敏感性高、铁素体组织多,容易导致批量生产时裂解工序缺陷增加,但裂解后大头孔失圆和断面塑性变形小。

关键词：材料合成与加工工艺 36MnVS4 连杆裂解加工数值模拟

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遗传算法求解多模态优化问题的动力性

自动化学报 2008年第2期34卷 180-187页

作者：李航李敏强寇纪淞天津大学管理学院

多模态函数一般存在多个局部极值解,局部极值解处适应值的大小很大程度上影响了它们被遗传算法搜索到的概率.为了弄清楚这种影响机制,通过分析基因池遗传算法的无限种群动力系统,刻画了双峰函数局部极值解的适值差与系统不动点之间的解... 详细信息

多模态函数一般存在多个局部极值解,局部极值解处适应值的大小很大程度上影响了它们被遗传算法搜索到的概率.为了弄清楚这种影响机制,通过分析基因池遗传算法的无限种群动力系统,刻画了双峰函数局部极值解的适值差与系统不动点之间的解析关系,进一步分析推广了理论结果的适用范围.最后,提出针对多模态优化问题的两阶段遗传算法,给出了应用理论结果改善遗传搜索性能的范例,实验结果表明该算法对多模态函数的搜索性能有明显改善,从侧面证明了理论结果在实际应用中的正确性.

关键词：多模态优化问题双峰函数 Walsh变换基因池遗传算法

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社会问题报道与受众心理引导

天津师范大学学报（社会科学版） 2010年第4期30卷 54-58页

作者：寇纪淞荣荣天津大学管理与经济学部天津大学管理与经济学部博士后流动站天津师范大学新闻传播学院

现阶段的中国社会处于急剧变革的时期,取得很多成绩也面临众多的"问题"。对于社会问题报道的尺度把握以及对社会心理的引导是新闻媒介应密切关注的问题,对社会问题的关注实质上是对政府决策能力实行有效的舆论监督,同时也是帮助受众构... 详细信息

现阶段的中国社会处于急剧变革的时期,取得很多成绩也面临众多的"问题"。对于社会问题报道的尺度把握以及对社会心理的引导是新闻媒介应密切关注的问题,对社会问题的关注实质上是对政府决策能力实行有效的舆论监督,同时也是帮助受众构筑社会认知全景。因此,对该领域的报道需要新闻工作者做到与时俱进,不断探索传播规律,使新闻媒介发挥高水平的舆论功能,对社会心理引导起到积极作用。

关键词：社会问题心理引导新闻媒介