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Laugier-Hunziker syndrome:a report of three cases and literature review

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International Journal of Oral Science 2012年第4期4卷 226-230页

作者： Wen-Mei wang Xiang wang Ning Duan Hong-Liu Jiang xiao-Feng Huang Department of Oral Medicine Institute and Hospital of StomatologyNanjing University Medical School Department of Oral Pathology Institute and Hospital of StomatologyNanjing University Medical School

Laugier-Hunziker syndrome （LHS） is an acquired pigmentary condition affecting lips, oral mucosa and acral area, frequently associated with longitudinal melanonychia. There is neither malignant predisposition nor underlying systemic abnormality associated with LHS. Herein, we present three uncommon cases of LHS with possibly new feature of nail pigmentation, which were diagnosed during the past 2 years. We also review the clinical and histological findings, differential diagnosis, and treatment of the syndrome in published literature.

关键词： differential diagnosis Laugier-Hunziker syndrome longitudinal melanonychia oral pigmentation

Asymmetric Synthesis of N-(Diphenylphosphinyl)furfurylamine by the Enantioselective Alkylation of Furfurylimine

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Chinese Chemical Letters 2005年第9期16卷 1147-1150页

作者： Hai Le ZHANG xiao Mei ZHANG Xin LI Ai Qiao MI Xin CUI Yao zhong JIANG Key Laboratory of Asymmetric Synthesis and Chirotechnology of Sichuan Province and Union Laboraotry of Asymmetric Synthesis Chengdu Institute of Organic Chemistry Chinese Academy of Sciences Chengdu 610041

Optically active N-（diphenylphosphinyl）furfurylamines 2 with good ee values were obtained by the enantioselective addition of dialkylzincs to furfuryl imine 1 in the presence of chiral aminoalcohol derivatives and o... 详细信息

关键词： Asymmetric dialkylzinc N-(diphenylphosphinyl)furfurylarnine.

Co-Fe quantum dots coupled with ultrathin g-C_(3)N_(4) nanosheets as efficient and stable photo-Fenton catalysts

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Rare Metals 2023年第6期42卷 1877-1887页

作者： Jia-Yu Li Xin-Yu wang Jian Tian xiao-Li Zhang Feng Shi School of Materials Science and Engineering Shandong University of Science and TechnologyQingdao266590China School of Materials Science and Engineering Qilu University of Technology(Shandong Academy of Sciences)Jinan250353China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou450001China

The Fenton reaction has been widely used in the environmental ***,the sharp decline of photo-Fenton catalysts activity under neutral conditions is still an urgent problem to be *** study reports a Co/Fe bimetallic oxide quantum dots-coupled g-C_(3)N_(4)nanosheets(CoFeO QDs/g-C_(3)N_(4) NSs) composites with efficient degradation of organic pollutants under neutral *** the photo-Fenton condition,rhodamine B(RhB) degradation efficiency reached 98.32% within 90min for CoFeO QDs/g-C_(3)N_(4) NSs *** formed heterojunction between CoFeO QDs and g-C_(3)N_(4) NSs achieves enhanced charge transfer and efficient charge ***-Fe bimetals make g-C_(3)N_(4) NSs easier to excite the production of·OH by H_(2)O_(2),achieving excellent degradation efficiency and cycle stability for organic pollutants in a wide pH ***,CoFeO QDs/g-C_(3)N_(4)NSs composites can be used as efficient and stable photoFenton catalysts to degrade organic contaminants in practical applications.

关键词： Bimetallic oxide Quantum dots(QDs) gC_(3)N_(4) Wastewater treatment Photo-Fenton

Identification of low-resistivity-low-contrast pay zones in the feature space with a multi-layer perceptron based on conventional well log data

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Petroleum Science 2022年第2期19卷 570-580页

作者： Lun Gao Ran-Hong Xie Li-Zhi xiao Shuai wang Chen-Yu Xu State Key Laboratory of Petroleum Resources and Prospecting China University of Petroleum(Beijing)Beijing102249China

In the early exploration of many oilfields,low-resistivity-low-contrast(LRLC)pay zones are easily overlooked due to the resistivity similarity to the water *** identification methods are model-driven and cannot yield satisfactory results when the causes of LRLC pay zones are *** this study,after analyzing a large number of core samples,main causes of LRLC pay zones in the study area are discerned,which include complex distribution of formation water salinity,high irreducible water saturation due to micropores,and high shale ***,different oil testing layers may have different causes of LRLC pay *** a result,in addition to the well log data of oil testing layers,well log data of adjacent shale layers are also added to the original dataset as reference *** densitybased spatial clustering algorithm with noise(DBSCAN)is used to cluster the original dataset into 49 clusters.A new dataset is ultimately projected into a feature space with 49 *** new dataset and oil testing results are respectively treated as input and output to train the multi-layer perceptron(MLP).A total of 3192 samples are used for stratified 8-fold cross-validation,and the accuracy of the MLP is found to be 85.53%.

关键词： Low-resistivity-low-contrast(LRLC)pay zones Conventional well logging Machine learning DBSCAN algorithm Multi-layer perceptron

Loss of monocarboxylate transporter 1 aggravates white matter injury after experimental subarachnoid hemorrhage in rats

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Frontiers of Medicine 2021年第6期15卷 887-902页

作者： Xin Wu Zongqi wang Haiying Li Xueshun Xie Jiang Wu Haitao Shen Xiang Li zhong wang Gang Chen Department of Neurosurgery&Brain and Nerve Research Laboratory The First Affiliated Hospital of Soochow UniversitySuzhou215006China

Monocarboxylic acid transporter 1(MCT1)maintains axonal function by transferring lactic acid from oligodendrocytes to *** hemorrhage(SAH)induces white matter injury,but the involvement of MCT1 is *** this study,the SAH model of adult male Sprague-Dawley rats was used to explore the role of MCT1 in white matter injury after *** 48 h after SAH,oligodendrocyte MCT1 was significantly reduced,and the exogenous overexpression of MCT1 significantly improved white matter integrity and long-term cognitive *** training after SAH significantly increased the number of ITPR2+SOX10+oligodendrocytes and upregulated the level of MCT1,which was positively correlated with the behavioral ability of *** addition,miR-29b and miR-124 levels were significantly increased in SAH rats compared with non-SAH *** intervention experiments showed that miR-29b and miR-124 could negatively regulate the level of *** study confirmed that the loss of MCT1 may be one of the mechanisms of white matter damage after SAH and may be caused by the negative regulation of miR-29b and ***1 may be involved in the neurological improvement of rehabilitation training after SAH.

关键词： microRNAs monocarboxylate transporter 1 motor training subarachnoid hemorrhage white matter injury

The effects of PAF antagonist on intestinal mucosal microcirculation after burn in rats

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World Journal of Gastroenterology 2000年第6期6卷 906-908页

作者： Pei Wu Yu Guang Xia xiao xiao jian Qin Li Xin Zhou Zi Qiang wang Department of General Surgery Southwest HospitalThird Military Medical UniversityChongqing 400038China Institute of Burn Research Southwest HospitalThird Military Medical UniversityChongqing 400038China

INTRODUCTIONGut originated infection(GOI)has been recognizedas a potential factor for postburn irreversible shock,early sepsis and multiple system organ *** intestinal mucosal barrier injury has beenimplicated as the ... 详细信息

关键词： platelet activating factor intestinal mucosa intramucosal PH burn

Effect of oxygen addition and annealing time on microstructure and mechanical properties of Ti-34Nb alloy

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Journal of Iron and Steel Research International 2023年第1期30卷 158-164页

作者： Jun-shuai wang Wen-long xiao Lei Ren Yu Fu Chao-li Ma Key Laboratory of Aerospace Advanced Materials and Performance of Ministry of Education School of Materials Science and EngineeringBeihang UniversityBeijing 100191China

The effect of oxygen addition and annealing time on microstructure and mechanical properties of Ti-34Nb and Ti-34Nb-0.2O alloys was *** addition of O suppresses the martensitic *** phase composition changes from singleα''phase toα''+βphases with oxygen *** addition of oxygen increases strength significantly at as-received,cold-rolled,and annealed alloys through solid solution *** accumulation of abundance of defects and grain refinement introduced by cold rolling have a significant strengthening effect but also damage *** addition of oxygen increasesα/βtransformation temperature and promotes the precipitation ofαphase during annealing in Ti-34Nb-0.2O alloy.αprecipitates can inhibit grain growth during *** strength decreases with annealing time increased due to the increase in grain size in Ti-34Nb alloy,while the strength increases in Ti-34Nb-0.2O alloy mainly due to the precipitation ofα*** cold rolling followed by annealing and addition of oxygen can improve the properties of alloys.

关键词： Titanium alloy Oxygen addition Annealing time αprecipitate

Effect of Metal Cations on Corrosion Behavior and Surface Structure of Carbon Steel in Chloride Ion Atmosphere

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Acta Metallurgica Sinica(English Letters) 2020年第9期33卷 1302-1310页

作者： Yu-Wei Liu Jian Zhang xiao Lu Miao-Ran Liu Zhen-Yao wang Environmental Corrosion Center Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Analysis and Testing Center Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China University of Chinese Academy of Sciences Beijing 100049.China

In order to better understand why the corrosion behavior of carbon steel exposed in Nansha atmospheric environment is very serious, the effect of sodium, potassium and magnesium chlorides deposited on carbon steel surface has been studied under atmosphere conditions by wet/dry accelerated test. The difference of corrosion behavior and surface structure in Na+, K+, and Mg2+ containing atmosphere has been investigated by thickness loss, scanning electron microscope, X-ray diffraction and electrochemical techniques. The results indicate that the thickness loss of carbon steel exposed in different metal cations containing atmospheric environment increases in the order of Na+, K+, Mg2+. The hard metal cation can promote the dissolution of the steel to a certain extent. In Mg2+ containing atmosphere, the relative content of β-FeOOH is rather higher and the protective ability index α */γ * decreases in the order of Na+, K+, Mg2+. The corrosion current density of both bare carbon steel and the rusted carbon steel increases in the order of Na+, K+, Mg2+. The polarization resistance and the charge transfer resistance decreases in the order of Na+, K+, Mg2+.

关键词： Metal cation Carbon steel Chloride Atmospheric corrosion

Insight into the green route to dimethyl succinate by direct esterification of bio-based disodium succinate using CO_(2)and CH_(3)OH

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Chinese Journal of Chemical Engineering 2023年第12期64卷 188-195页

作者： Yu-Gao wang xiao-Chen Han Bao Gu Hua-Shuai Wu Jun Shen School of Chemical Engineering and Technology Taiyuan University of TechnologyTaiyuan 030024China

The fermentation for succinic acid production outperforms other methods by low energy consumption and environmental benignity,with the resulting products mainly as disodium succinate(DSA).By directly esterifying DSA using CO_(2) and CH3OH,it is expected to avoid the use of inorganic *** high-resolution mass spectrometry analysis and theoretical calculation,this study establishes that the reaction consists of three steps,i.e.,first forming 3-carboxypropanoate,then monomethyl succinate(MMS),and finally dimethyl succinate(DMS).A detailed kinetic analysis is further performed,the results demonstrate that the transformation of DSA to MMS is regarded to be a second-order reaction for reactant DSA,while the transformation of MMS to DMS is a first-order reaction for reactant *** activation energy for the generation of MMS from DSA is 37.15 kJ·mol^(-1),and that for the generation of DMS from MMS is 85.80 kJ·mol^(-1),indicating the latter one is the rate-determining step.

关键词： Succinate Carbon dioxide Direct esterification Reaction mechanism Reaction kinetics Kinetic modeling