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High catalytic activity for formaldehyde oxidation of an interconnected network structure composed of δ-MnO_(2) nanosheets and γ-MnOOH nanowires

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Advances in Manufacturing 2020年第4期8卷 429-439页

作者： Ying Tao Rong Li Ai-Bin Huang Yi-Ning Ma Shi-dong ji Ping jin hong-jie Luo State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050.People's Republic of China Institute for the Conservation of Culture Heritage Shanghai UniversityShanghai 200444.People's Republic of China University of Chinese Academy of Sciences Beijing 100049People's Republic of China Department of Criminal Science and Technology Jiangsu Police InstituteNanjing 210031People's Republic of China

Among the transition metal oxide catalysts,manganese oxides have great potential for formaldehyde(HCHO)oxidation at ambient temperature because of their high activity,nontoxicity,low cost,and polybasic *** this work,a MnO_(2)-based catalyst(M-MnO_(2))with an interconnected network structure was successfully synthesized by a one-step hydrothermal *** M-MnO_(2) catalyst was composed of the main catalytic agent,δ-MnO_(2) nanosheets,dispersed in a nonactive framework material of γ-MnOOH *** catalytic activity of M-MnO_(2) for HCHO oxidation at room temperature was much higher than that of the pure δ-MnO_(2) *** is attributed to the special interconnected network *** special interconnected network structure has high dispersion and specific surface area,which can provide more surface active oxygen species and higher surface hydroxyl groups to realize rapid decomposition of HCHO.

关键词： MnO_(2) Formaldehyde Catalytic oxidation Hydrothermal synthesis

Deciphering fungal metabolon coupling tandem inverse-electrondemand Diels-Alder reaction and semipinacol rearrangement for the biosynthesis of spiro polycyclic alkaloids

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Science China Chemistry 2025年第01期 288-296页

作者： Shuai Liu Wen-Qiang Xu Ying-Tong Di Man-Cheng Tang Ding-Kang Chen Ming-Ming Cao Yao-Wen Chang hong-Yu Tang Chun-Mao Yuan Jun-Bo Yang Zhi-Li Zuo Han Guo Zi-Fei Xu Ying Zeng Yun-dong Wu Xiao-jiang Hao Key Laboratory of Phytochemistry and Natural Medicines (Chinese Academy of Sciences) Kunming Institute of Botany Chinese Academy of Sciences University of Chinese Academy of Sciences Lab of Computational Chemistry and Drug Design State Key Laboratory of Chemical Oncogenomics Peking University Shenzhen Graduate School Shenzhen Bay Laboratory State Key Laboratory of Microbial Metabolism School of Life Sciences & Biotechnology Shanghai Jiao Tong University State Key Laboratory of Functions and Applications of Medicinal Plants Guizhou Medical University Molecular Biology Experimental Center Germplasm Bank of Wild Species in Southwest China Kunming Institute of Botany Chinese Academy of Sciences Yunnan Key Laboratory for Wild Plant Resources Kunming Institute of Botany Chinese Academy of Sciences Research Unit of Chemical Biology of Natural Anti-Virus Products Chinese Academy of Medical Sciences

In the intricate process of natural product biosynthesis, a metabolon can enhance metabolic flux by associating sequential enzymes. A fungal metabolon, comprising of flavin-dependent monooxygenase Spe F and P450 monooxygenase Spe G, is identified in the biosynthesis of spiro polycyclic alkaloids(+)-notoamide B and its diastereomer(+)-versicolamide B. Using notoamide E as a substance, Spe F/Spe G metabolon can control the stereoselectivity of its 2,3-epoxidation, followed by hydrogen atom ion at C-17 to generate reactive epoxide tau-m A with dienyl iminium unit. Subsequently,(+)-notoamide B and(+)-versicolamide B are produced via tandem nonenzymatic inverse-electron-demand Diels-Alder reaction and semipinacol rearrangement. This provides the first example of metabolon in the biosynthesis of spiro-prenylated indole alkaloids.

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论“慎捕”的法规范控制体系及实践问题破解

武汉大学学报（哲学社会科学版） 2025年第1期78卷 172-184页

作者：董坤中国社会科学院法学研究所中国社会科学院大学北京100720

历次修法中涉及逮捕的制度机制的演进轨迹和条文变化的内在逻辑表明,为实现“慎捕”目标,《中华人民共和国刑事诉讼法》(以下简称《刑事诉讼法》)已初步构筑起一套结构严谨、衔接有序、层次分明的关于逮捕权的法规范控制体系。该体系在... 详细信息

历次修法中涉及逮捕的制度机制的演进轨迹和条文变化的内在逻辑表明,为实现“慎捕”目标,《中华人民共和国刑事诉讼法》(以下简称《刑事诉讼法》)已初步构筑起一套结构严谨、衔接有序、层次分明的关于逮捕权的法规范控制体系。该体系在事前的权力配置阶段“两次分离”逮捕权,以具体社会危险性评估为重心改造逮捕要件;在事中的权力行使阶段以“兼听则明”为原则设计了充分听取控辩双方意见的审查逮捕机制;在事后的权力制约阶段要求检察院、法院及时纠正撤销错捕决定,释放犯罪嫌疑人。从司法办案的角度来看,现有的法规范控制体系在规则制定和程序执行时仍有不足和缺漏,如逮捕权分离不彻底,控辩意见“兼听”机制保障不充分,径行逮捕条件设计机械、不周延,当事人对错捕的救济途径缺失等。本轮《刑事诉讼法》修改应坚持“实践—规范”的互动逻辑,关注司法实践,将解决和弥补逮捕中的权力运行失范和权利保障不足等现实问题作为修法方向,破难题、开新局,不断推动中国刑事诉讼法治现代化进程。

关键词：慎捕法规范控制体系径行逮捕权利保障《刑事诉讼法》修改

Microstructure evolution and thermal physical properties of CuCr alloy after high pressure treatment

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Rare Metals 2014年第3期33卷 293-298页

作者： Yu-Quan Ma hong-ju Lin dong-dong SongMechanical and Electrical Engineering College Hebei Normal University of Science and Technology

The thermal diffusion coefficient, thermal conductivity, and thermal expansion coefficient of CuCr alloy prepared by infiltration were measured by thermal constant tester and dilatometer before and after high pressure heat treatment, at the same time, the effect of high pressure treatment on the thermal physical properties of CuCr alloy was discussed by the analysis of its microstructure. The experimental results show that high pressure heat treatment can increase the thermal diffusion coefficient and thermal conductivity of CuCr alloy, but it changes slightly in the pressure range of 1-6 GPa. As for thermal expansion coefficient, when the temperature is higher than 130 °C, it is obviously higher than that of the alloy without high pressure treatment after 1 GPa pressure treatment, and the higher the temperature is, the larger their differences are.

关键词： CuCr alloy High pressure treatment Thermaldiffusion coefficient Thermal conductivity Thermalexpansion coefficient

Corporate Effects of Temperature and Strain Range on the Low Cycle Fatigue Life of a Single-Crystal Superalloy DD10

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Acta Metallurgica Sinica(English Letters) 2015年第2期28卷 152-158页

作者： Zhi-dong Fan dong Wang Lang-hong Lou Institute of Metal Research Chinese Academy of Sciences

Low cycle fatigue behavior of a nickel-based single-crystal superalloy DD10 was investigated at 760 and 980 ℃ under different strain ranges. Results show that the fatigue life （Nf） of DD10 alloy exhibits different temperature dependence under various strain ranges. Under low strain range, the alloy exhibits a longer Nf at 760 ℃ than that at 980 ℃. However, under high strain range, a reverse result is obtained. This difference can be attributed to the change of dominant damage modes under various test conditions, which is manifested in different modes of crack initiation （crack nucleation and its early propagation）. At 760 ℃, the crack initiates at pores in subsurface due to local stress concentration. This process is mainly controlled by plastic amplitude and plastic property, but not affected by oxygen-induced damage before the crack propagates to the surface. At 980 ℃, the crack initiates at surface instead of pores due to the more homogeneous plastic deformation and the disharmony between the external oxidation layer and the bulk material when the strain amplitude is high. At that temperature, the process is mainly controlled by oxidation damage and strain amplitude simultaneously. Therefore, under high strain range, the crack initiation is much easier at 760 ℃ due to plastic deformation and the poor plasticity, while under low strain range obvious oxidation damage at 980℃ may accelerate the crack initiation.

关键词： Low cycle fatigue Single-crystal superalloy Temperature Strain Crack initiation

Clinical correlates of hypotension in patients with acute organophosphorus poisoning

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World Journal of Emergency Medicine 2021年第1期12卷 24-28页

作者： Ning dong Zhe-xi Lu Xing-liang Li Wei Li Li Pang ji-hong Xing Department of Emergency the First Hospital of Jilin UniversityChangchun 130021China School of Medicine Pennsylvania State College of MedicineHershey 17033USA

BACKGROUND:The aim of the present study is to describe the clinical correlates of hypotension and its associated outcomes in patients with acute organophosphorus poisoning(AOPP).METHODS:In this retrospective cohort study,we analyzed data pertaining to 871 patients with AOPP who were treated at two *** from hypotensive and non-hypotensive patients were compared to identify clinical correlates of *** also evaluated the association between clinical parameters(including hypotension)and in-hospital ***:The incidence of hypotension in AOPP patients was 16.4%.Hypotensive patients showed signifi cantly higher in-hospital mortality(1.1%vs.39.9%,P<0.001).Advanced age(odds ratio[OR]1.25,95%confi dence interval[CI]1.08–1.44),history of diabetes(OR 2.65,95%CI 1.14–5.96),and increased white blood cell count(OR 1.06,95%CI 1.03–1.09),plasma cholinesterase(OR 0.91,95%CI 0.84–0.94),plasma albumin(OR 0.88,95%CI 0.85–0.92),serum amylase(OR 1.01,95%CI 1.01–1.02),and blood pH(OR 0.64,95%CI 0.54–0.75)were signifi cantly associated with *** adjusting for potential confounders,hypotension was associated with increased in-hospital mortality(hazard ratio 8.77–37.06,depending on the controlled variables).CONCLUSIONS:Hypotension is a common complication of AOPP and is associated with increased in-hospital *** age,history of diabetes,and changes in laboratory parameters were associated with hypotension in AOPP patients.

关键词： Acute organophosphate poisoning Hypotension Cholinesterase inhibitor Cardiovascular complication Shock

Interaction of CdTe/CdS quantum dots with antibodies

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Chinese Chemical Letters 2009年第9期20卷 1119-1122页

作者： Chen Shi Xiang Yi Huang Chao Qing dong hong jin Chen ji Cun Ren College of Chemistry & Chemical Engineering Shanghai Jiaotong University Shanghai 200240 China

In the study, we observed the strong adsorption of CdTe/CdS QDs to antibodies and the formation of QDs-antibodies conjugates. Capillary electrophoresis with laser-induced fluorescence detection （CE-LIF）, fluorescence spectrometry and fluorescence correlation spectroscopy （FCS） were used to characterize the QDs conjugates with antibody. We found that the QDs-antibody conjugates possessed high fluorescence, small hydrodynamic radii and good stability in aqueous solution. 2009 ji Cun Ren. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.

关键词： CdTe/CdS quantum dots Antibodies Capillary electrophoresis Fluorescence correlation spectroscopy Interaction

Magnetron sputtered nickel oxide with suppressed interfacial defect states for efficient inverted perovskite solar cells

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Journal of Energy Chemistry 2025年第1期100卷 348-355页

作者： Guoqiang Ma Qin Tan Zhaoning Li jingwei Xiu jiafeng Wang Tianle Cheng dong He Qiang Sun Xuhang Ma Francesco Lamberti Zhubing He Department of Materials Science and Engineering Institute of Innovative Materials (I2M) Shenzhen Key Laboratory of Full Spectral Solar Electricity Generation (FSSEG)Southern University of Science and Technology (SUSTech) Core Research Facilities Southern University of Science and Technology Department of Chemical Sciences Department of Industrial Engineering University of Padova

Widely used spin-coated nickle oxide （NiOx） based perovskite solar cells often suffer from severe interfacial reactions between the NiOxand adjacent perovskite layers due to surface defect states,which inherently impair device performance in a long-term view,even with surface molecule *** this study,we developed high-quality magnetron-sputtered NiOxthin films through detailed process optimization,and compared systematically sputtered and spin-coated NiOxthin film surfaces from materials to *** sputtered NiOxfilms exhibit improved crystallinity,smoother surfaces,and significantly reduced Ni3+or Ni vacancies compared to their spin-coated ***,the interface between the perovskite and sputtered NiOxfilm shows a substantially reduced density of defect *** solar cells （PSCs） fabricated with our optimally sputtered NiOxfilms achieved a high power conversion efficiency （PCE） of up to 19.93%and demonstrated enhanced stability,maintaining 86.2% efficiency during 500 h of maximum power point tracking under one standard sun ***,with the surface modification using (4-(2,7-dibromo-9,9-dimethylacridin-10（9H）-yl)butyl)p hosphonic acid （DMAcPA）,the device PCE was further promoted to 23.07%,which is the highest value reported for sputtered NiOxbased PSCs so far.

关键词： Nickle oxide Magnetron sputter Defect Stability Perovskite solar cell

HOTTIP downregulation reduces neuronal damage and microglial activation in Parkinson's disease cell and mouse models

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Neural Regeneration Research 2022年第4期17卷 887-897页

作者： Peng Lun Tao ji De-hong Wan Xia Liu Xiao-dong Chen Shuai Yu Peng Sun Department of Neurosurgery the Affiliated Hospital of Qingdao UniversityQingdaoShandong ProvinceChina Department of Neurosurgery Laiyang People’s HospitalYantaiShandong ProvinceChina Department of Endocrine and Metabolic Diseases the Affiliated Hospital of Qingdao UniversityQingdaoShandong ProvinceChina Emergency Department the Affiliated Hospital of Qingdao UniversityQingdaoShandong ProvinceChina

HOXA transcript at the distal tip(HOTTIP),a newly identified long noncoding RNA,has been shown to exhibit anti-inflammatory effects and inhibit oxygen-glucose deprivation-induced neuronal ***,its role in Parkinson's disease(PD)remains unclear.1-Methyl-4-phenylpyridium(MPP+)and 1-methyl-4-phenyl-1,2,3,6-tetrahydropyridine(MPTP)were used to establish PD models in SH-SY5 Y and BV2 cells and in C57 BL/6 male mice,*** vitro,after HOTTIP knockdown by sh-HOTTIP transfection,HOTTIP and FOXO1 overexpression promoted SH-SY5 Y apoptosis,BV2 microglial activation,proinflammatory cytokine expression,and nuclear factor kappa-B and NACHT,LRR and PYD domains-containing protein 3 inflammasome *** of mi R-615-3 p inhibited MPP+-induced neuronal apoptosis and microglial inflammation and ameliorated HOTTIP-and FOXO1-mediated nerve injury and *** vivo,HOTTIP knockdown alleviated motor dysfunction in PD mice and reduced neuronal apoptosis and microglial activation in the substantia *** findings suggest that inhibition of HOTTIP mitigates neuronal apoptosis and microglial activation in PD models by modulating mi R-615-3 p/*** study was approved by the Ethics Review Committee of the Affiliated Hospital of Qingdao University,China(approval ***-2018-042)in June 2018.

关键词： apoptosis inflammation miR-615-3p neuron NLRP3 noncoding RNA Parkinson's disease HOTTIP