检索结果-南通市图书馆

Investigation of Epstein-barr virus in Chinese colorectal tumors

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

World Journal of Gastroenterology 2003年第11期9卷 2464-2468页

作者： Huan-Xin liu Yan-Qing ding Xin li kai-Tai Yao, Department of Pathology, the First Military Medical University, Guangzhou 510515, Guangdong Province, China Department of Pathology the First Military Medical University Guangzhou 510515 Guangdong Province China.

AIM: To elucidate the association of Epstein-Barr virus (EBV) with colorectal tumors and to demonstrate whether infection of EBV existed in different stages of colorectal tumors involves in the ***: One hundred and thirty paraffin-embedded tissues of colorectal tumors were classified into 5 groups:26 adenomas, 23 adenomas complicated with dysplasia, 22 adenomas complicated with carcinomatous, 36 colon carcinoma and 23 HNPCC, were examined by PCR, IHC and ISH, ***: EBV DNA was detected by PCR in 26 cases out of the 130 specimens, including 5 cases of adenomas, 5 adenomas complicated with dysplasia, 5 adenomas complicated with carcinomatous, 7 colorectal carcinoma and 4 HNPCC. IHC detection showed the expression of LMP1 in 7 cases, including 1 adenoma, 1 adenoma with dysplasia, 1 HNPPC, 2 adenomas complicated with carcinomatous, and 2 colorectal carcinomas. The expression of EBER1 detected by ISH was positive in 6 cases, including 1 adenoma with dysplasia, 2 adenomas complicated with carcinomatous and 3 colorectal carcinomas. There were no significant differences among the results of PCR, IHC and ISH in the 5 groups. In all cases of HNPCC, none of the tumor cells showed positive signals of EBER1, but some EBV-positive tumor infiltrating lymphocytes were found in 2 of 23 ***: Our results showed that infection of EBV exists in human colorectal tumors, which indicates that EBV may be involved in the carcinogenesis of colorectal tumors but does not play an important role. The mechanisms need to be clarified further.

关键词：爱泼斯坦-巴尔病毒结直肠癌 PCR 肿瘤生成临床研究

Enhanced post-combustion CO2 capture and direct air capture by plasma surface functionalization of graphene adsorbent

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Energy Chemistry 2025年第1期100卷 653-664页

作者： Rahul Navik Eryu Wang Xiao ding Huang Yunyi Yiyu liu Jia li Guangdong-Hong Kong Joint Laboratory for Carbon Neutrality Jiangmen Laboratory of Carbon and Science and Technology Guangzhou HKUST Fok Ying Tung Research Institute The Hong Kong University of Science and Technology (Guangzhou) Carbon Neutrality and Climate Change Thrust Society Hub The Hong Kong University of Science and Technology (Guangzhou) Stoddart Institute of Molecular Science Department of Chemistry Zhejiang University

Graphene has enormous potential to capture CO2due to its unique properties and ***,graphene-based adsorbents have drawbacks of lower CO2adsorption capacity and poor *** work demonstrates a one-step rapid and sustainable N2/H2plasma treatment process to prepare graphene-based sorbent material with enhanced CO2adsorption *** treatment directly enriches amine species,increases surface area,and improves textural *** CO2adsorption capacity increases from 1.6 to 3.3 mmol/g for capturing flue gas,and from 0.14 to 1.3 mmol/g for direct air capture （DAC）.Importantly,the electrothermal property of the plasma-modified aerogels has been significantly improved,resulting in faster heating rates and significantly reducing energy consumption compared to conventional external heating for regeneration of *** aerogels display improved selectivity of 42 and 87 after plasma modification for 5 and 10 min,*** plasma-treated aerogels display minimal loss between 17%and 19% in capacity after 40 adsorption/desorption cycles,rendering excellent *** N2/H2plasma treatment of adsorbent materials would lower energy expenses and prevent negative effects on the global economy caused by climate change.

关键词： Carbon neutrality CO 2 capture Climate change Plasma treatment Graphene aerogel

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

超重力旋转床用亲水涂料的制备和性能

表面技术 2016年第10期45卷 135-140页

作者：胡晨邓先和丁凯利华南理工大学化学与化工学院广州510641

目的为减少多级离心雾化超重力旋转床气体出口过量的雾沫夹带现象,针对以金属丝网为填料的旋转床,制备一种具有优秀耐热性能及耐腐蚀性能,且能良好附着于金属丝网上的亲水涂层,以提升超重力旋转床的除雾性能及塔板效率。方法以具有亲水... 详细信息

目的为减少多级离心雾化超重力旋转床气体出口过量的雾沫夹带现象,针对以金属丝网为填料的旋转床,制备一种具有优秀耐热性能及耐腐蚀性能,且能良好附着于金属丝网上的亲水涂层,以提升超重力旋转床的除雾性能及塔板效率。方法以具有亲水性的丙烯酸、丙烯酸羟丙酯、丙烯酰胺为共聚单体,采用水溶液聚合法合成亲水性丙烯酸树脂,系统研究了合成时亲水性单体用量、引发剂用量、反应时间、反应温度、乳化剂等参数对涂膜亲水性能的影响,通过热重分析、接触角测试、红外光谱、3D形貌仪等性能测试,对产物的综合性能进行了系统研究。结果确定了涂层亲水性的最佳反应条件为:引发剂质量分数为0.1%,AA摩尔分数为50%,反应时间为5 h,反应温度为30℃。此时产物的初期接触角为11.7°,持续接触角为16.2°且硬度为2,附着力1级,耐蚀性能良好。结论获得了符合超重力旋转床要求的亲水涂层,在多级离心雾化超重力旋转床上具有良好的应用,减少了超重力旋转床中低气速下的雾沫夹带现象。

关键词：多级离心雾化超重力旋转床雾沫夹带水溶液聚合法丙烯酸树脂亲水性附着力性能测试

大孔树脂纯化艾草多酚及其对α-葡萄糖苷酶活性抑制作用

在线全文

学校读者我要写书评

暂无评论

食品与机械 2023年第7期39卷 13-19页

作者：吴萍香魏明丁凯莉聂风安徽工程大学生物与食品工程学院安徽芜湖241000

目的:分离纯化艾草多酚,并研究其对α-葡萄糖苷酶的抑制活性。方法:对比了7种大孔树脂对艾草多酚的吸附与解吸性能的差异,得到较合适的树脂,优化了其纯化条件。采用乙醇溶液进行梯度洗脱,研究了不同梯度乙醇洗脱组分对α-葡萄糖苷酶活... 详细信息

目的:分离纯化艾草多酚,并研究其对α-葡萄糖苷酶的抑制活性。方法:对比了7种大孔树脂对艾草多酚的吸附与解吸性能的差异,得到较合适的树脂,优化了其纯化条件。采用乙醇溶液进行梯度洗脱,研究了不同梯度乙醇洗脱组分对α-葡萄糖苷酶活性的抑制作用。结果:D101树脂是较好的艾草多酚吸附剂,静态吸附120 min即达到饱和,最佳分离纯化条件为:粗多酚质量浓度1.5 mg/mL,pH 2.0,上样流速1.5 mL/min,吸附平衡后,以60%乙醇为洗脱液,1.5 mL/min流速进行洗脱,纯化效果良好,多酚纯度由21.42%提升到69.19%,纯度提高了3.23倍。对比不同梯度乙醇洗脱组分对α-葡萄糖苷酶抑制活性,其中60%乙醇洗脱组分可以很好地抑制α-葡萄糖苷酶活性。60%乙醇洗脱的艾草多酚主要含有异槲皮苷、根皮苷、芦丁等,其可能对α-葡萄糖苷酶活性具有抑制作用。结论:艾草多酚具有一定的降血糖效果。

关键词：艾草多酚大孔树脂纯化 α-葡萄糖苷酶活性

维普期刊数据库博看期刊

An Efficient Boron Source Activation Strategy for the Low‑Temperature Synthesis of Boron Nitride Nanotubes

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2025年第1期17卷 548-558页

作者： Ying Wang kai Zhang liping ding liyun Wu Songfeng E Qian He Nanyang Wang Hui Zuo Zhengyang Zhou Feng ding Yue Hu Jin Zhang Yagang Yao National Laboratory of Solid State Microstructures College of Engineering and Applied SciencesJiangsu Key Laboratory of Artificial Functional Materialsand Collaborative Innovation Center of Advanced MicrostructuresNanjing UniversityNanjing 210093People’s Republic of China School of Electronic Information and Artificial Intelligence Shaanxi University of Science&TechnologyXian 710000People’s Republic of China College of Bioresources Chemical and Materials Engineering Shaanxi University of Science&TechnologyXian 710000People’s Republic of China Key Laboratory of Carbon Materials of Zhejiang Province College of Chemistry and Materials EngineeringWenzhou UniversityWenzhou 325000People’s Republic of China Shenzhen Institutes of Advanced Technology Chinese Academy of SciencesShenzhen 518000People’s Republic of China College of Chemical and Molecular Engineering Peking UniversityBeijing 100871People’s Republic of China

Lowering the synthesis temperature of boron nitride nanotubes(BNNTs)is crucial for their *** primary reason for adopting a high temperature is to enable the effective activation of highmelting-point solid *** this study,we developed a novel approach for efficiently activating boron by introducing alkali metal compounds into the conventional MgO–B *** approach can be adopted to form various low-melting-point AM–Mg–B–O growth *** growth systems have improved catalytic capability and reactivity even under low-temperature conditions,facilitating the synthesis of BNNTs at temperatures as low as 850℃.In addition,molecular dynamics simulations based on density functional theory theoretically demonstrate that the systems maintain a liquid state at low temperatures and interact with N atoms to form BN *** findings offer novel insights into the design of boron activation and are expected to facilitate research on the low-temperature synthesis of BNNTs.

关键词： Boron nitride nanotubes Low-temperature Boron activation Density functional theory

Optimization Strategies of Na_(3)V_(2)(PO_(4))_(3) Cathode Materials for Sodium‑Ion Batteries

在线全文

学校读者我要写书评

暂无评论

Nano-Micro Letters 2025年第2期17卷 204-251页

作者： Jiawen Hu Xinwei li Qianqian liang li Xu Changsheng ding Yu liu Yanfeng Gao School of Materials Science and Engineering Shanghai UniversityShanghai 200444People’s Republic of China Shanghai Institute of Ceramics Chinese Academy of SciencesShanghai 200050People’s Republic of China

Na_(3)V_(2)(PO_(4))_(3)(NVP)has garnered great attentions as a prospective cathode material for sodium-ion batteries(SIBs)by virtue of its decent theoretical capacity,superior ion conductivity and high structural ***,the inherently poor electronic conductivity and sluggish sodium-ion diffusion kinetics of NVP material give rise to inferior rate performance and unsatisfactory energy density,which strictly confine its further application in ***,it is of significance to boost the sodium storage performance of NVP cathode *** to now,many methods have been developed to optimize the electrochemical performance of NVP cathode *** this review,the latest advances in optimization strategies for improving the electrochemical performance of NVP cathode material are well summarized and discussed,including carbon coating or modification,foreign-ion doping or substitution and nanostructure and morphology *** foreign-ion doping or substitution is highlighted,involving Na,V,and PO_(4)^(3−)sites,which include single-site doping,multiple-site doping,single-ion doping,multiple-ion doping and so ***,the challenges and prospects of high-performance NVP cathode material are also put *** is believed that this review can provide a useful reference for designing and developing high-performance NVP cathode material toward the large-scale application in SIBs.

关键词： Sodium-ion batteries Na_(3)V_(2)(PO_(4))_(3) Cathode materials Electrochemical performance Optimization strategies

Controlled cationic ring-opening polymerization of L-lactide by organic ion pair: novel approach to isotactic-rich and crystalline polylactide

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2025年第1期 394-402页

作者： Zhiqiang ding Mingqian Wang Zijing Zhou Bin Wang Yuesheng li Tianjin Key Laboratory of Composite & Functional Materials School of Materials Science and Engineering Tianjin University

living/controlled cationic ring-opening polymerization （ROP） of L-lactide is a promising approach to isotactic-rich and crystalline poly（L-lactide）.In contrast with the unsubstituted lactones,L-LA can not be polymerized by organic Lewis acids or carbenium ions,and the state of the art in this field is the cationic ROP of L-LA catalyzed by Br?nsted acid/alcohol system via activated monomer ***,we reported the first example of controlled cationic ROP of L-LA by using Meerweintype ion pair[Me3O]+[B（C6F5）4]-as the catalyst.[Me3O]+[B（C6F5）4]-promoted rapid L-LA cationic polymerization in the absence of alcohol,producing isotactic-rich and crystalline PLLA without transesterification and epimerization side *** activated chain end mechanism,involving twice SN2 substitution and configuration-inversion （S→R→S） with the assistance of released Me2O,was proposed and further verified by density functional theory and control *** work expands the catalytic toolbox of isotactic-rich and crystalline polylactide *** represents a unique example of cationic-controlled polymerization of L-LA catalyzed by an organic ion pair.

关键词：

同方期刊数据库

政务新媒体矩阵建设实践与发展路径探析——基于“共青团中央”新媒体账号的研究

在线全文

学校读者我要写书评

暂无评论

岭南学刊 2020年第4期 50-56,63页

作者：蔡岚丁凯利广东外语外贸大学社会与公共管理学院广东广州511400

政务新媒体矩阵是指政务新媒体向多种模式互动及多介质互融转变,形成包含网站、“两微多端”等在内的跨媒体形态的传播矩阵。通过梳理“共青团中央”新媒体矩阵的发展历程,分析其在微博、微信公众平台、知乎、B站和抖音的传播现状、平... 详细信息

政务新媒体矩阵是指政务新媒体向多种模式互动及多介质互融转变,形成包含网站、“两微多端”等在内的跨媒体形态的传播矩阵。通过梳理“共青团中央”新媒体矩阵的发展历程,分析其在微博、微信公众平台、知乎、B站和抖音的传播现状、平台定位、受众特征和内容类别等,发现其新媒体矩阵中存在着权威消解下的“冷处理”现象,低原创率背后的“同质化”难题以及矩阵扩张中的“人格分裂”危机等困境,因此,新媒体矩阵的未来发展要以制度树立权威,做疑声的“回应者”,要深度利用平台,当好内容的“创作者”,要注重解决身份矛盾,选好后台的“运营者”。

关键词：政务新媒体新媒体矩阵实践发展路径共青团中央

Deciphering the role of mtH2O2 in hepatic ischemia-reperfusion injury mechanisms with low-background super-resolution fluorogenic probe

在线全文

学校读者我要写书评

暂无评论

Science China Chemistry 2025年第01期 297-307页

作者： Bin Fang limin Wang Haoqin li Jiaxin Zhang Yang ding Pan Pan li Bo Peng Hua Bai lin li Frontiers Science Center for Flexible Electronics Xi'an Institute of Flexible Electronics (IFE) and Xi'an Institute of Biomedical Materials &Engineering Northwestern Polytechnical University Institute of Flexible Electronics (IFE Future Technologies) Xiamen University

Hepatic ischemia-reperfusion injury（HIRI） is characterized by mitochondrial dysfunction and oxidative stress. Monitoring mitochondrial hydrogen peroxide（mtH2O2） levels in real-time through super-resolution imaging is crucial for elucidating its distribution in live cells and its mechanism of action during HIRI. However, low-background fluorogenic probes have been overlooked in the context of super-resolution imaging. In this study, we developed a low-background fluorogenic probe（MitoWG） with the potential for super-resolution morphology-correlated mitochondrial identification to track the fluctuates of mtH2O2in HIRI. Activation of the desirable fluorescence properties of the probe by mtH2O2was confirmed using structural illumination microscopy（SIM）, enabling high-quality mitochondrial imaging with exceptional specificity and *** in mtH2O2levels were successfully observed in both cellular and rat models of HIRI. Furthermore, we associated the decline in mitochondrial redox homeostasis with accelerated mtH2O2production during HIRI, which triggered mitophagy deficiency and led to cell death. In conclusion, Mito-WG possesses excellent photophysical and low-background properties for SIM imaging, making it a promising tool for mtH2O2tracking in HIRI research and clinical diagnosis.

关键词：

同方期刊数据库