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Topography,structure,and formation kinetic mechanism of carbon deposited onto nickel in the temperature range from 400 to 850°C

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International Journal of Minerals,Metallurgy and Materials 2017年第5期24卷 574-583页

作者： Zhi-yuan Chen Liu-zhen Bian Li-jun Wang Zi-you Yu hai-lei zhao Fu-shen Li Kuo-chih Chou State Key Laboratory of Advanced Metallurgy University of Science and Technology Beijing Collaborative Innovation Center of Steel Technology University of Science and Technology Beijing School of Materials Science and Engineering University of Science and Technology Beijing

The carbon deposition behavior on nickel particles was observed within the temperature range from 400 to 800°C in a pure methane atmosphere. The topography, properties, and molecular structure of the deposited carbon were investigated using field-emission scanning electron microscopy (FESEM), temperature-programmed oxidation (TPO) technology, X-ray diffraction (XRD), and Raman spectroscopy. The deposited carbon is present in the form of a film at 400-450°C, as fibers at 500-600°C, and as particles at 650-800°C. In addition, the structure of the deposited carbon becomes more ordered at higher temperatures because both the TPO peak temperature of deposited carbon and the Raman shift of the G band increase with the increase in experimental temperature, whereas the intensity ratio between the D bands and the G band decreases. An interesting observation is that the carbon deposition rate is suppressed in the medium-temperature range (M-T range) and the corresponding kinetic mechanism changes. Correspondingly, the FWHM of the G and D1 bands in the Raman spectrum reaches a maximum and the intensities of the D2, D3, and D4 bands decrease to low limits in the M-T range. These results indicate that carbon structure parameters exhibit two different tendencies with respect to varying temperature. Both of the two group parameters change dramatically as a peak function with increasing reaction temperature within the M-T range.

关键词： nickel carbon deposition kinetic mechanisms solid oxide fuel cells

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Effects of Wei Chang An on expression of multiple genes in human gastric cancer grafted onto nude mice

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World Journal of Gastroenterology 2008年第5期14卷 693-700页

作者： Ai-Guang zhao Ting Li Sheng-Fu You hai-lei zhao Ying Gu Lai-Di Tang Jin-Kun Yang Department of Oncology Longhua Hospital Shanghai University of Traditional Chinese Medicine 725 Wanping Road Shanghai 200032 China

AIM： To investigate the expression of multiple genes in Chinese jianpi herbal recipe Wei Chang An （WCA） in human gastric cancer cell line SGC-7901. METHODS： A human gastric adenocarcinoma cell line SGC-7902 grafted onto nude mice was used as the animal model. The mice were randomly divided into 3 groups, one control and the two representing experimental conditions. Animals in the two experimental groups received either WCA over a 34-d period or 5-fluorouracil （5-FU） over 6-d period starting at 8th d after grafting. Control animals received saline on an identical schedule. Animals were killed 41 d after being grafted. The expression profiles in paired WCA treated gastric cancer samples and the N.S. control samples were studied by using a cDNA array representing 14181 cDNA clusters. The alterations in gene expression levels were confirmed by Real-time Quantitative polymerase chain reaction （qPCR）. RESULTS： When compared with controls, the average tumor inhibitory rate in WCA group was 44.32% ± 5.67% and 5-FU 47.04% ± 22.33% （P 〈 0.01, respectively）. The average labeling index （LI） for PCNA in WCA group and 5-FU group was significantly decreased compared with the control group. Apoptotic index （AI） was significantly increased to 9.72% ± 4.52% using the terminal deoxynucleotidyl transferase-mediated deoxyuridine triphosphate fluorescence nick end labeling （TUNEL） method in WCA group compared with the controls 2.45% ± 2.37%. 5-FU group was also found to have a significantly increased AI compared with the controls. The expression of cleaved Caspase-3 in WCA group and 5-FU group was significantly increased compared with the control group respectively. There were 45 different expressed sequence tags （ESTs） among the control sample pool and WCA sample pool. There were 24 ESTs up-regulated in WCA samples and 21 ESTs down-regulated. By using qPCR, the expression level of Stat3, rap2 interacting protein x （RIPX）, regulator of differentiation 1 （ROD1） and Bcl-2 was lower in

关键词： Gastric cancer Chinese Jianpi herbs Expressions of multiple genes Real-time quantitative PCR

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国际视角下的成人教育治理研究

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成人教育 2017年第10期37卷 15-18页

作者：张睿杨海平赵蕾重庆城市管理职业学院重庆401331 湖南医药学院湖南怀化418000 湖北工业大学工程技术学院武汉430070

成人教育治理强调参与主体的多元化、公共利益的最大化、教育决策的科学化。文章从国际视角探究了成人教育治理的内涵、模式、主体协作,提出通过政府分权和加强治理主体的能力建设来促使成人教育从"共治"达到"善治",为推进我国成人教育... 详细信息

成人教育治理强调参与主体的多元化、公共利益的最大化、教育决策的科学化。文章从国际视角探究了成人教育治理的内涵、模式、主体协作,提出通过政府分权和加强治理主体的能力建设来促使成人教育从"共治"达到"善治",为推进我国成人教育管理模式的变革和发展提供参考。

关键词：成人教育治理成人教育治理模式主体协作政府分权能力建设

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Effects of Chinese Jianpi herbs on cell apoptosis and related gene expression in human gastric cancer grafted onto nude mice

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World Journal of Gastroenterology 2002年第5期8卷 792-796页

作者： Ai-Guang zhao hai-lei zhao Jin-Kun Yang Lai-Di Tang Department of Oncology,Longhua Hospital,Shanghai University of Traditional Chinese Medicine,Shanghai 200032,China Xiao-Jie Jin Renji Hospital,Shanghai Second Medical University,Shanghai 200032,China Department of Oncology Longhua Hospital Shanghai University of Traditional Chinese Medicine Shanghai 200032 China. aiguang@***

AIM: To explore the mechanism of the Sijunzi decoction and another Chinese herbal recipe (SRRS) based mainly on the Sijunzi decoction in treatment of gastric ***: A human gastric adenocarcinoma cell line SGC7901 grafted onto nude mouse was used as the animal model. The mice were divided into 3 groups, one control and the two representative experimental conditions. Ahimals in the two experimental groups received either Sijunzi decoction or SRRS over a 40-day period starting at 1st day after grafting. Control animals received saline on an identical schedule. Animals were killed 41 days after being *** effect of therapy was assessed by two ways: (1)tumor size was periodically measured during the life of the animals; (2) tumor weight was determined by a electron balance immediately after the animals killed. For detection of apoptotic cells, apoptotic indices(AI) were examined by the terminal deoxynucleotidyl transferase-mediated deoxyuddine tdphosphate fluorescence nick end labeling (TUNEL) *** alterations were observed with electron microscopy. S-P immunohistochemical method was used to detect the expression of Ki-67 in xenografts. Expression of bcl-2 and p53 was semiquantitatively detected using a reverse transcriptase-polymerase chain reaction (RT-PCR)***: When compared with controls, tumor growth (size and weight) was significantly inhibited by treatment with the Sijunzi decoction (P＜0.05) or SRRS (P＜0.01). The tumor inhibitory rate in the Sijunzi decoction group was 34.33 % and SRRS group 46.53 %. AI of human gastric cancer xenografts in nude mice was significantly increased to 16.24±3.21% using TUNEL method and 11.38±6.46 % by FACScan in the Sijunzi decoction group compared with the controls (TUNEL: 2.63±1.03 %, P＜0.01; FACScan: 7.15± 1.32 %, P＜0.05). SRRS group was also found a significantly increased AI by using TUNEL method and flow cytometry analysis compared with the controls (TUNEL: 13.18±3.05 %,P＜0.05; FACSc

关键词：胃癌健脾中药作用机制细胞凋亡基因表达动物实验

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健脾中药诱导人胃癌细胞裸小鼠移植瘤细胞凋亡的实验研究

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世界华人消化杂志 2000年第7期8卷 737-740页

作者：赵爱光杨金坤赵海磊上海中医药大学附属龙华医院肿瘤一科上海市200032

目的研究健脾类中药复方四君子汤及以四君子汤等健脾药物为基础结合清热解毒、软坚散结中药组成的复方 SRRS 对人胃癌细胞裸小鼠移植瘤的抑瘤作用与诱导肿瘤细胞凋亡的关系.方法采用人胃癌细胞 SGC-7901裸小鼠皮下移植瘤模型.实验动物... 详细信息

目的研究健脾类中药复方四君子汤及以四君子汤等健脾药物为基础结合清热解毒、软坚散结中药组成的复方 SRRS 对人胃癌细胞裸小鼠移植瘤的抑瘤作用与诱导肿瘤细胞凋亡的关系.方法采用人胃癌细胞 SGC-7901裸小鼠皮下移植瘤模型.实验动物共30只,造模后随机分为3组,每组10只:SRRS 方剂组,予240 g/L SRRS 煎剂0.5mL/d 灌胃;四君子汤组,予160 g/L 四君子汤煎剂0.5 mL/d 灌胃;对照组,予生理盐水0.5 mL/d 灌胃,共40 d.应用末端脱氧核苷酸转移酶介导的dUTP 缺口末端标记法(TUNEL 法)、电镜,结合流式细胞仪分析技术,观察 SRRS 方剂及四君子汤的抑瘤作用与肿瘤细胞凋亡率及形态学改变,结果四君子汤、SRRS 方剂对人胃癌细胞裸小鼠移植瘤抑瘤率分别为34%,47%,TUNEL 法检测肿瘤细胞凋亡指数(AI)分别为:16%±3%,13%±3%,与对照组 AI:3%±1%比较,显著提高(四君子组 P<0.01;SRRS 方剂组 P<0.05,均为 t 检验);流式细胞分析示四君子汤组凋亡率:11%±6%,SRRS 方剂组:12%±6%,均较对照组:7%±1%提高(t 检验,P<0.05);但四君子汤和 SRRS 方剂组之间的凋亡率 TUNEL法和流式细胞分析均无差异.电镜下二中药治疗组见较多凋亡细胞和凋亡小体;对照组凋亡细胞和凋亡小体极少.结论中药四君子汤、SRRS 方剂在体内的抑瘤作用与诱导胃癌细胞凋亡有关,其诱导细胞凋亡作用可能主要与健脾药物有关.诱导肿瘤细胞凋亡可能是健脾药物抗癌作用的机制之一.

关键词：健脾药细胞凋亡胃肿瘤中医药疗法

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Regulation and function of endoplasmic reticulum autophagy in neurodegenerative diseases

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Neural Regeneration Research 2025年第1期20卷 6-20页

作者： Xiu-Yun zhao De-En Xu Ming-lei Wu Ji-Chuan Liu Zi-Ling Shi Quan-Hong Ma Department of Neurology and Clinical Research Center of Neurological Disease the Second Affiliated Hospital of Soochow UniversitySuzhouJiangsu ProvinceChina Institute of Neuroscience&Jiangsu Key Laboratory of Translational Research and Therapy for Neuro-Psycho-Diseases Soochow UniversitySuzhouJiangsu ProvinceChina Department of Neurology Jiangnan University Medical CenterWuxiJiangsu ProvinceChina

The endoplasmic reticulum,a key cellular organelle,regulates a wide variety of cellular *** reticulum autophagy,one of the quality control systems of the endoplasmic reticulum,plays a pivotal role in maintaining endoplasmic reticulum homeostasis by controlling endoplasmic reticulum turnover,remodeling,and *** this review,we briefly describe the endoplasmic reticulum quality control system,and subsequently focus on the role of endoplasmic reticulum autophagy,emphasizing the spatial and temporal mechanisms underlying the regulation of endoplasmic reticulum autophagy according to cellular *** also summarize the evidence relating to how defective or abnormal endoplasmic reticulum autophagy contributes to the pathogenesis of neurodegenerative *** summary,this review highlights the mechanisms associated with the regulation of endoplasmic reticulum autophagy and how they influence the pathophysiology of degenerative nerve *** review would help researchers to understand the roles and regulatory mechanisms of endoplasmic reticulum-phagy in neurodegenerative disorders.

关键词： autophagy endoplasmic reticulum endoplasmic reticulum autophagy endoplasmic reticulum quality control system endoplasmic reticulum receptors endoplasmic reticulum-associated degradation neurodegeneration neurodegenerative disease selective autophagy unfolded protein response

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Inhibiting SHP2 reduces glycolysis, promotes microglial M1 polarization, and alleviates secondary inflammation following spinal cord injury in a mouse model

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Neural Regeneration Research 2025年第3期20卷 858-872页

作者： Xintian Ding Chun Chen Heng zhao Bin Dai lei Ye Tao Song Shuai Huang Jia Wang Tao You Department of Orthopedics The First Affiliated Hospital of USTCDivision of Life Sciences and MedicineUniversity of Science and Technology of ChinaHefeiAnhui ProvinceChina Department of Orthopedics Provincial Hospital Affiliated to Anhui Medical UniversityHefeiAnhui ProvinceChina

Reducing the secondary inflammatory response, which is partly mediated by microglia, is a key focus in the treatment of spinal cord injury. Src homology 2-containing protein tyrosine phosphatase 2(SHP2), encoded by PTPN11, is widely expressed in the human body and plays a role in inflammation through various mechanisms. Therefore, SHP2 is considered a potential target for the treatment of inflammation-related diseases. However, its role in secondary inflammation after spinal cord injury remains unclear. In this study, SHP2 was found to be abundantly expressed in microglia at the site of spinal cord injury. Inhibition of SHP2 expression using siRNA and SHP2 inhibitors attenuated the microglial inflammatory response in an in vitro lipopolysaccharide-induced model of inflammation. Notably, after treatment with SHP2 inhibitors, mice with spinal cord injury exhibited significantly improved hind limb locomotor function and reduced residual urine volume in the bladder. Subsequent in vitro experiments showed that, in microglia stimulated with lipopolysaccharide, inhibiting SHP2 expression promoted M2 polarization and inhibited M1 polarization. Finally, a co-culture experiment was conducted to assess the effect of microglia treated with SHP2 inhibitors on neuronal cells. The results demonstrated that inflammatory factors produced by microglia promoted neuronal apoptosis, while inhibiting SHP2 expression mitigated these effects. Collectively, our findings suggest that SHP2 enhances secondary inflammation and neuronal damage subsequent to spinal cord injury by modulating microglial phenotype. Therefore, inhibiting SHP2 alleviates the inflammatory response in mice with spinal cord injury and promotes functional recovery postinjury.

关键词： apoptosis glycolysis inflammatory response microglia neurons polarization spinal cord injury Src homology 2-containing protein tyrosine phosphatase 2

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A promising approach for quantifying focal stroke modeling and assessing stroke progression:optical resolution photoacoustic microscopy photothrombosis

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Neural Regeneration Research 2025年第7期20卷 2029-2037页

作者： Xiao Liang Xingping Quan Xiaorui Geng Yujing Huang Yonghua zhao lei Xi Zhen Yuan Ping Wang Bin Liu Faculty of Health Sciences University of MacaoMacao Special Administrative RegionChina Center for Cognitive and Brain Sciences University of MacaoMacao Special Administrative RegionChina Department of Biomedical Engineering Southern University of Science and TechnologyShenzhenGuangdong ProvinceChina State Key Laboratory of Quality Research in Chinese Medicine Institute of Chinese Medical SciencesUniversity of MacaoTaipaMacao Special Administrative RegionChina Department of Emergency Zhujiang HospitalSouthern Medical UniversityGuangzhouGuangdong ProvinceChina

To investigate the mechanisms underlying the onset and progression of ischemic stroke,some methods have been proposed that can simultaneously monitor and create embolisms in the animal cerebral ***,these methods often require complex systems and the effect of age on cerebral embolism has not been adequately studied,although ischemic stroke is strongly *** this study,we propose an optical-resolution photoacoustic microscopy-based visualized photothrombosis methodology to create and monitor ischemic stroke in mice simultaneously using a 532 nm pulsed *** observed the molding process in mice of different ages and presented age-dependent vascular embolism ***,we integrated optical coherence tomography angiography to investigate age-associated trends in cerebrovascular variability following a *** imaging data and quantitative analyses underscore the differential cerebrovascular responses to stroke in mice of different ages,thereby highlighting the technique's potential for evaluating cerebrovascular health and unraveling age-related mechanisms involved in ischemic strokes.

关键词： age-dependent cerebral cortex ischemic stroke mouse model optical coherence tomography angiography photoacoustic microscopy photothrombosis vascular imaging

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Transforming waste particles into valuable adsorbents via amyloid-mediated molecular engineering

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Science China Chemistry 2025年第01期 317-328页

作者： Qingmin Yang Jian zhao Yujia Zhang Xingyu Zhou Hao Ren Bowen Hu Zhongli lei Lixin Chen Peng Yang School of Material and Chemical Engineering Bengbu University Anhui Provincial Engineering Laboratory of Silicon-Based Materials School of Chemistry and Chemical Engineering Northwestern Polytechnical University Key Laboratory of Applied Surface and Colloid Chemistry Ministry of Education School of Chemistry and Chemical EngineeringShaanxi Normal University Xi'an Key Laboratory of Polymeric Soft Matter School of Chemistry and Chemical Engineering Shaanxi Normal University International Joint Research Center on Functional Fiber and Soft Smart Textile School of Chemistry and Chemical EngineeringShaanxi Normal University

The high-value utilization of industrial solid waste using a facile and eco-friendly process is of great interest and significance in reducing environmental pollution and developing a green circular economy. Herein, we propose an amyloid-mediated molecular engineering strategy to transform particulate waste into valuable adsorbents for metal ions. Our method has the advantage of aqueous solution fabrication under mild conditions without the use of high-temperature hydrothermal methods and toxic chemical reagents. Amyloid-mediated molecular engineering manipulates the phase transition of bovine serum albumin(BSA)on particulate waste surfaces, resulting in a remarkable ～3.1 times improvement in the adsorption capacity of fly ash, a typical industrial solid waste for gold ions after modification with the phase-transitioned BSA(PTB). The resultant adsorption ability was 69–1,980 times higher than those of conventional and emerging adsorbent materials such as ion exchange resins, activated carbon(AC), covalent organic frameworks(COFs), and metal-organic frameworks(MOFs). We further demonstrated the application of our PTB-modified materials in the recovery of precious metals from low-grade gold ore and electronic waste leachates. Consequently, this strategy could increase the value of waste materials nearly 27 times. In addition, this method is generally extendable to other conventional industrial adsorbents such as resin, clay, and Al2O3, and enhances their adsorption capabilities at least twofold. Overall, this work provides a simple and green approach for improving the adsorption performance of solid particles, and is expected to develop into a universal strategy for transforming waste particles into high-value-added products.

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Oxygen vacancies enriched Ir/WOx catalysts for the directly chem-catalytic conversion of cellulose to ethanol

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Tungsten 2025年第1期 88-99页

作者： Yu-Jing Weng zhao-Ying Ding Ying-Chao Li Yuan-Feng Wu Yuan-Yang Xu Rui Chen Xiao-lei zhao hai-Yong Wang Da-lei Zhang Yu-Long Zhang Henan Key Laboratory of Coal Green Conversion and International Joint Laboratory of Coal Clean Utilization College of Chemistry and Chemical Engineering Henan Polytechnic University Key Laboratory of Renewable Energy Guangzhou Institute of Energy Conversion Chinese Academy of Sciences Liaoning Institute of Energy Technology

Tungsten and its oxides are highly versatile catalysts with unique properties that hold great promise for a wide array of applications,including biological pathways and chemical *** chemo-catalysis of cellulose to ethanol presents a promising avenue for ethanol synthesis with the potential for enhanced efficiency compared to conventional methods,offering a sustainable and carbon-neutral alternative to existing petrochemical and biological ***,Ir/WOxcatalysts enriched with oxygen vacancies were meticulously prepared and demonstrated remarkable catalytic performance in converting cellulose to ethanol directly in the presence of tungstic *** catalyst achieved a high ethanol yield of 66.5%under optimal reaction conditions,approaching the theoretical yield limit of traditional ethanol *** results revealed the presence of oxygen defects,Bronsted/Lewis acidity,and Ir nanoclusters on the catalyst surface,working synergistically to facilitate the cascade catalysis of cellulose hydrolysis,sugar retro-aldol condensation reaction,and C2 intermediate hydrodeoxygenation to *** situ Fourier transform infrared spectrometer analysis confirmed the catalyst's ability to enhance the adsorption and activation of ethylene glycol for ethanol *** manipulating subtle structural features,this study offers a fresh perspective on tungsten group catalyst design and underscores the importance of synergistic effects among catalytic sites for the efficient production of ethanol from cellulose.

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