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Unveiling inverse vulcanized polymers as metal-free,visible-light-driven photocatalysts for cross-coupling reactions

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Chinese Chemical Letters 2024年第4期35卷 142-146页

作者： lang gao Cen Zhou Rui Wang Feng Lan Bohang An Xiaozhou Huang Xiao Zhang Fujian Key Laboratory of Polymer Science Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical EngineeringCollege of Chemistry and Materials ScienceFujian Normal UniversityFuzhou 350007China Fujian Engineering and Research Center of New Chinese Lacquer Materials College of Materials and Chemical EngineeringMinjiang UniversityFuzhou 350108China

Inverse vulcanized polymers(IVPs) that generated from elemental sulfur and smaller amounts of alkenes have found broad promising applications such as cathode materials for Li-S batteries, dynamic and repairable materials, optics applications, and metal sorption. However, their exploration in organic synthesis is still unprecedented. Here we first report the application of inverse vulcanized polymers in catalysis for organic transformations. A biomass-derived inverse vulcanized polymer(IVP-EAE) is found to be capable of catalyzing cross-coupling reactions in a transition-metal-free fashion under visible *** method allows the direct C–H functionalization of pyrroles and N-arylacrylamides with(hetero)aryl halides, respectively, leading to the formation of two sets of structurally important scaffolds including pyrrole-containing biaryls and 3,3-disubstituted oxindoles with high selectivity. We anticipate this study will not only unveil the new potential of IVPs, but also offer a distinct type of catalysts for organic transformations.

关键词： Cross coupling Inverse vulcanized polymers Metal free Photocatalyst Visible light

Highly sensitive gas sensing material for polar gas molecule based on Janus group-Ⅲ chalcogenide monolayers: A first-principles investigation

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Science China(Technological Sciences) 2020年第8期63卷 1566-1576页

作者： PANG KaiJuan WEI YaDong LI WeiQi ZHOU Xin JIANG YingJie YANG JianQun LI XingJi gao lang JIANG YongYuan School of Physics Harbin Institute of TechnologyHarbin 150001China School of Chemistry and Chemical Engineering Harbin Institute of TechnologyHarbin 150001China School of Materials Science and Engineering Harbin University of Science and TechnologyHarbin 150080China School of Materials Science and Engineering Harbin Institute of TechnologyHarbin 150001China

Gas sensors play an indispensable role in industrial,personal safety and environmental protection,and have been widely investigated by *** some cases,the sensitivity of a two-dimensional material sensor can be enhanced by generating vacancies or applying an external electric *** results can be achieved using Janus 2D materials,which have an inherent electric field and are good candidates for high-sensitivity gas *** this study,the electronic and transport properties of Janus group-Ⅲchalcogenide monolayers(Ga2SSe,In2SSe)were investigated for detecting CO2 and NO2 using first-principles *** several parameters that affect the performance of gas sensors,such as adsorption distances,adsorption energies,charge transfers and density of states(DOS),a detailed comparison of Janus group-Ⅲchalcogenide monolayers has been provided with their pristine systems,Janus group-Ⅲchalcogenide monolayers(Ga2SSe,In2SSe)have high *** was mainly ascribed to the built-in electric field caused by the out-of-plane asymmetric structure of Janus monolayer which enhances the dipole-dipole interaction between the polar gas molecule and the 2D *** the variation of transmission spectra of the Janus group-Ⅲchalcogenide monolayer before and after adsorbing molecules further proves the feasibility of this kind of material as a high-sensitivity gas sensor.

关键词： group-III chalcogenide monolayers gas sensors transmission spectrum electronic structure first-principles calculations

Prophylactic effect of glyceryl trinitrate on post-endoscopic retrograde cholangiopancreatography pancreatitis:A randomized placebo-controlled trial

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World Journal of Gastroenterology 2009年第3期15卷 366-368页

作者： Jian-Yu Hao Dong-Fang Wu Yue-Zeng Wang Ying-Xin gao Hai-Po lang Wei-Zhen Zhou Department of Digestion Beijing Chaoyang Hospital Affiliated to Capital Medical University Beijing 100020 China

AIM:To examine the prophylactic effect of glyceryl trinitrate on post-endoscopic retrograde cholangiopancreatography(ERCP) pancreatitis and ***:Patients scheduled for ERCP were randomly divided into study group and placebo *** in study group and placebo group were treated with 5 mg glyceryl trinitrate and 100 mg vitamin C,respectively,5 min before endoscopic ***:A total of 74 patients were enrolled in the final ***-ERCP pancreatitis occurred in 3 patients(7.9%) of the study group and 9 patients(25%) in the placebo group(P = 0.012).Hyperamylasemia occurred in 8 patients of the study group(21.1%) and 13 patients(36.1%) of the placebo group(P = 0.037).CONCLUSION:Glyceryl trinitrate before ERCP can effectively prevent post-ERCP and hyperamylasemia.

关键词： Glyceryl trinitrate Cholangiopancreatography Endoscopic retrograde Pancreatitis

Correlation between Helicobacter pylori-associated gastric diseases and colorectal neoplasia

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World Journal of Gastroenterology 2016年第18期22卷 4576-4584页

作者： Ying Qing Min Wang Ying-Min Lin Dong Wu Jing-Yu Zhu lang gao Yan-Yan Liu Teng-Fei Yin Department of Geriatric Gastroenterology Qi-Lu Hospital of Shandong University Department of General Medicine Qi-Lu Hospital of Shandong University Department of General Surgery Qi-Lu Hospital of Shandong University Department of Gastroenterology Jinan Central Hospital

AIM: To explore the correlation between Helicobacter pylori(H. pylori)-associated gastric diseases and colorectal ***: Patients included in this study underwent a colonoscopy and esophago-gastro-duodenoscopy(EGD) along with histopathological measurement between March 2012 and March 2015 at Qi-Lu Hospital of Shandong University, who also had results of H. pylori detection. A total of 233 cases were selected. Demographic data, H. pylori infection status(including results of rapid urease tests and gastric mucosa pathological examinations) and histopathological examination results of gastric and colorectal mucosa were gathered and analyzed. The statistical analysis focused on the prevalence of colorectal neoplasms among patients with various histopathological categories of the stomach. ORs and their 95%CI were calculated to describe the strengths of the ***: The incidence rates of colorectal adenoma without high-grade intraepithelial neoplasia(HGIEN)(OR = 2.400, 95%CI: 0.969-5.941), adenoma with HGIEN(5.333, 1.025-27.758) and adenocarcinoma(1.455, 0.382-5.543) were all higher for patients with H. pylori-associated gastritis than for those in the control group. The incidence rate of colorectal adenoma with HGIEN(3.218, 0.767-13.509) was higher in patients with intestinal metaplasia than in the control group, while the incidence rates of adenoma without HGIEN(0.874, 0.414-1.845) and adenocarcinoma(0.376, 0.096-1.470) were lower in the intestinal metaplasia group than in the control group. The incidence rate of colorectal adenoma without HGIEN(3.111, 1.248-7.753) was significantly higher in the gastric intraepithelial neoplasia group than in the control group, while the rates of adenoma with HGIEN(1.481, 0.138-15.941) and adenocarcinoma(2.020, 0.561-7.272) were higher in the gastric intraepithelial neoplasia group. Incidence rates of colorectal adenoma without HGIEN(1.067, 0.264-4.314), adenoma with HGIEN(2.667, 0.231-30.800) and adenocarcino

关键词： Helicobacter pylori Helicobacter pylori-associated gastric diseases Colorectal neoplasia Endoscopy with pathological biopsy Chinese population

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工程方案选择的权重-属性决策分析方法

环境科学 2000年第3期21卷 31-35页

作者：程声通高朗清华大学环境科学与工程系环境模拟与污染控制联合国家重点实验室北京100084

工程方案的选择是工程项目的战略决策问题 .从认知学原理出发 ,提出方案选择决策的 3个要素 :目标、权重和属性 .对决策目标体系的建立、权重的调查和赋值、属性的分析和规范化进行了讨论 ,提出了解决问题的思路和方法 .文中引用了一项... 详细信息

工程方案的选择是工程项目的战略决策问题 .从认知学原理出发 ,提出方案选择决策的 3个要素 :目标、权重和属性 .对决策目标体系的建立、权重的调查和赋值、属性的分析和规范化进行了讨论 ,提出了解决问题的思路和方法 .文中引用了一项工程方案决策实例 ,进一步说明权重 -属性分析方法的应用 .

关键词：决策分析权重属性工程方案选择

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越南沿海海港工程部分水域平面尺度优化

水运工程 2020年第5期 138-142,152页

作者：高浪中交第三航务工程勘察设计院有限公司上海200032

基于越南电力中心沿海海港工程,阐述了水深不能满足要求的项目的水域平面尺度设计方法。除根据各国标准规范及设计者的经验判断来决定外,结合船舶操纵模拟试验验证并优化设计方案,更能保证船舶在港内操纵航行的可行性、安全性和经济性... 详细信息

基于越南电力中心沿海海港工程,阐述了水深不能满足要求的项目的水域平面尺度设计方法。除根据各国标准规范及设计者的经验判断来决定外,结合船舶操纵模拟试验验证并优化设计方案,更能保证船舶在港内操纵航行的可行性、安全性和经济性。同时分析了模型试验存在的局限性,提醒设计者需要在建模和操纵等环节尽量减少模拟和实际情况的误差,保证试验准确可靠。相关设计方法与思路可为类似港口水域平面设计提供参考。

关键词：港口水域设计方法水域平面尺度船舶操纵模拟试验

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运动季教学模式的理论建构及应用研究

成都体育学院学报 2020年第2期46卷 107-113页

作者：高航高嵘高朗北京科技大学体育部北京100083 北京师范大学体育与运动学院北京100875 北京工业大学耿丹学院北京101301

依据《关于强化学校体育促进学生身心健康全面发展的意见》总体要求,通过文献资料法、逻辑推理法、实验法,以超大单元的运动季、课内外结合、技术课与竞赛课衔接、强化体能训练等方式方法改良运动教育模式,建构新型的运动季教学模式,并... 详细信息

依据《关于强化学校体育促进学生身心健康全面发展的意见》总体要求,通过文献资料法、逻辑推理法、实验法,以超大单元的运动季、课内外结合、技术课与竞赛课衔接、强化体能训练等方式方法改良运动教育模式,建构新型的运动季教学模式,并分析其对体质健康的促进效果。得出:运动季教学模式结构合理、方法优化、效果良好,有益于推进《意见》的落地,促进学校体育教学改革。

关键词：运动季运动教育运动技术运动竞赛体质健康

Parthenolide enhances the metronomic chemotherapy effect of cyclophosphamide in lung cancer by inhibiting the NF-kB signaling pathway

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World Journal of Clinical Oncology 2024年第7期15卷 895-907页

作者： Zheng Cai lang gao Kai Hu Qi-Ming Wang Department of Internal Medicine The Affiliated Cancer Hospital of Zhengzhou University&Henan Cancer HospitalZhengzhou 450008Henan ProvinceChina Department of Oncology The No.1 Affiliated Hospital of Yunnan University of Traditional Chinese MedicineKunming 650021Yunnan ProvinceChina

BACKGROUND Parthenolide(PTL),a sesquiterpene lactone derived from the medicinal herb Chrysanthemum parthenium,exhibits various biological effects by targeting NF-kB,STAT3,and other *** has emerged as a promising adjunct therapy for multiple *** To evaluate the in vitro and in vivo effect of PTL on cyclophosphamide(CTX)metronomic *** The cytotoxicity of PTL and CTX on Lewis lung cancer cells(LLC cells)was assessed by measuring cell activity and *** anti-tumor efficiency was evaluated using a tumor xenograft mice model,and the survival of mice and tumor volume were ***,the collected tumor tissues were analyzed for tumor microenvironment indicators and inflammatory *** In vitro,PTL demonstrated a synergistic effect with CTX in inhibiting the growth of LLC cells and promoting *** vivo,metronomic chemotherapy com-bined with PTL and CTX improved the survival rate of tumor-bearing mice and reduced tumor growth ***,metronomic chemotherapy combined with PTL and CTX reduced NF-κB activation and improved the tumor immune microenvironment by decreasing tumor angiogenesis,reducing Transforming growth factorβ,andα-SMA positive *** PTL is an efficient compound that enhances the metronomic chemotherapy effects of CTX both in vitro and in vivo,suggesting its potential as a supplementary therapeutic strategy in metronomic chemotherapy to improve the chemotherapy effects.

关键词： Lung cancer Parthenolide Cyclophosphamide Rhythmic chemotherapy NF-κB pathway

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机电产品多策略模块划分方法

计算机集成制造系统 2014年第5期20卷 1020-1028页

作者：高浪向东彭玲方昕清华大学机械工程系北京100084 四川长虹电器股份有限公司四川绵阳621000

为解决机电产品开发中客制化、技术进化和通用化三种策略之间的矛盾,提出机电产品多策略模块划分方法。该方法首先采用多策略质量功能展开方法,构建主参数分布模型和演进模型;其次采用基于流准则的功能模块划分方法初步划分模块;然后针... 详细信息

为解决机电产品开发中客制化、技术进化和通用化三种策略之间的矛盾,提出机电产品多策略模块划分方法。该方法首先采用多策略质量功能展开方法,构建主参数分布模型和演进模型;其次采用基于流准则的功能模块划分方法初步划分模块;然后针对多策略设计目标分析模块与主参数的关系,提出分离准则和实例设计准则对划分结果进行评估。通过电冰箱产品族的模块划分验证了方法的有效性和可行性。

关键词：产品多策略模块化设计模块划分方法