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Vanadium oxide assisted synthesis of networked silicon oxide nanowires and their growth dependence

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Particuology 2011年第5期9卷 458-464页

作者： Mohammad Norouzi Banis YongZhang Ruying Li Xueliang Sun xinxiang jiang Darius Nikanpour Department of Mechanical and Materials Engineering University of Western Ontario London Canada Spacecraft Engineering Space Technologies Canadian Space Agency 6767 route de I＇Aeroport St-Hubert QuebecJ3Y 8Y9 Canada

Networked silicon oxide nanowires have been synthesized by VO2-assisted chemical vapor deposition at 1000 ~C on silicon substrate without supplying any gaseous or liquid Si source. Systematic study on the nanowire growth has indicated that morphology and composition of the final products are sensitive to the catalyst components, reaction atmosphere and temperature. Compared to Au and V02 as catalysts individually, co-catalysts of Au and V02 play a critical role in the formation of networked Si02 nanowires. Transmission electron microscopy （TEM） and scanning electron microscopy （SEM） observations indicate that the silicon oxide nanowires have smooth surfaces with uniform diameters of 30-100 rim, and their lengths reach several hundred micrometers. X-ray photoelectron spectroscopy （XPS） results reveal the atomic ratio of silicon to oxygen is about 1：2. Growth dependence of the networked nanowires on hydrogen and temperature is also discussed. Vapor-liquid-solid （VLS） process is proposed for the growth mechanism of the networked nanowires. It is also found that the growth mechanism of SiO2 nanowires by increasing the temperature up to 1200 ℃ changes to vapor-solid （VS） processes since wire-like structures can be formed without any catalyst or H2 gas introduced into the system.

关键词： Networked SiO2 nanowire CVD Vanadium dioxide Gold

Potassium alleviated high nitrogen-induced apple growth inhibition by regulating photosynthetic nitrogen allocation and enhancing nitrogen utilization capacity

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Horticultural Plant Journal 2024年第1期10卷 1-14页

作者： xinxiang Xu Guangyuan Liu Jingquan Liu Mengxue Lyu Fen Wang Yue Xing Hao Meng Min Li Yu jiang Ge Tian Zhanling Zhu Yuanmao jiang Shunfeng Ge State Key Laboratory of Crop Biology College of Horticulture Science and EngineeringShandong Agricultural UniversityTai'anShandong 271018China Key Laboratory of Biochemistry and Molecular Biology in Universities of Shandong College of Biological and Agricultural EngineeringWeifang UniversityWeifangShandong 261061China

There is a close relationship between potassium(K)and nitrogen(N).However,the roles of K under high N conditions remain *** a hydroponics approach,we monitored the morphological,physiological,and molecular changes in M9T337 apple(Malus domestica)rootstocks under different nitrate(10 and 30 mmol·L^(-1)NO_(3)^(-))and K supply(0.5,6,10,and 20 mmol·L_(-1)K^(+))*** revealed that high nitrate inhibited the root growth of M9T337 rootstocks,downregulated the expressions of K transporter genes(MdPT5,MdHKT1,and MdATK1),and reduced the net NO3-and K+influx at the surface of roots,thereby resulting in an N/K imbalance in *** investigation showed that 10 mmol·L^(-1)K increased the activity of N metabolic enzymes(NR,GS,NiR,and GOGAT),upregulated the expressions of genes related to nitrate uptake and transport(MdNRT1.1,MdNRT1.2,MdNRT1.5,and MdNRT2.4),promoted15N transport from the roots to the shoots,optimized leaf N distribution,and improved photosynthetic N utilization efficiency under high nitrate *** results suggest that the negative effects of high nitrate may be related to the N/K imbalance and that reducing N/K in plants by increasing K supply level can effectively alleviate the inhibition of N assimilation by high nitrate stress.

关键词： Apple rootstock K level High nitrate stress N metabolism ^(15)N

微型螺钉结合克氏针内固定治疗第一掌骨基底部骨折

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现代保健（医学创新研究） 2006年第4X期3卷 7-8页

作者：蒋新祥东台市五烈医院江苏东台224200

目的报告微型螺钉结合克氏针内固定治疗第一掌骨基底部骨折的成功经验。方法共收治46例，其中男34例，女12例。平均年龄38-4岁。关节外骨折10例；Bennett骨折23例；Rolando骨折5例；粉碎骨折8例。均采用微型螺钉结合克氏针内固定治疗。... 详细信息

目的报告微型螺钉结合克氏针内固定治疗第一掌骨基底部骨折的成功经验。方法共收治46例，其中男34例，女12例。平均年龄38-4岁。关节外骨折10例；Bennett骨折23例；Rolando骨折5例；粉碎骨折8例。均采用微型螺钉结合克氏针内固定治疗。结果46例患者骨折均获得愈合。随访5—12月（平均7．6月），关节功能优29例，占63．1％；良13例，占28．3％；差4例，占8．6％。结论采用微型螺钉结合克氏针内固定治疗第一掌骨基底部骨折是一种简单、有效的治疗手段。

关键词：第一掌骨基底部骨折微型螺钉克氏针外科治疗

盐酸米诺环素联合替硝唑治疗重度慢性牙周炎的临床效果分析

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临床医学工程 2020年第3期27卷 321-322页

作者：江新香桂林医学院附属口腔医院口腔内科广西桂林541000

目的分析盐酸米诺环素联合替硝唑治疗重度慢性牙周炎的临床效果。方法选择2017年2月至2018年10月我院收治的100例重度慢性牙周炎患者,随机分为对照组和研究组各50例。对照组给予牙周基础治疗联合盐酸米诺环素治疗,研究组在对照组基础上... 详细信息

目的分析盐酸米诺环素联合替硝唑治疗重度慢性牙周炎的临床效果。方法选择2017年2月至2018年10月我院收治的100例重度慢性牙周炎患者,随机分为对照组和研究组各50例。对照组给予牙周基础治疗联合盐酸米诺环素治疗,研究组在对照组基础上采用替硝唑治疗。比较两组的治疗效果。结果研究组的治疗总有效率为96.00%,明显高于对照组的76.00%(P0.05)。结论盐酸米诺环素联合替硝唑治疗重度慢性牙周炎效果显著,可有效改善患者的临床症状,且安全性高,值得临床推广应用。

关键词：慢性牙周炎盐酸米诺环素替硝唑不良反应

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mRNA疫苗研究进展及挑战

免疫学杂志 2016年第5期32卷 446-449页

作者：苗鹤凡郭勇江新香邹先琼桂林医学院生物技术学院 541100 桂林医学院附属医院口腔科 541001

相对于DNA疫苗,mRNA疫苗是一种比较安全的新型核酸疫苗。mRNA疫苗的分子设计及化学修饰的研究目前主要集中于增强其稳定性和降低其免疫原性。mRNA疫苗的传递主要包括脂质体、非脂质体、病毒、纳米颗粒等。新的传递方法也在不断产生。mRN... 详细信息

相对于DNA疫苗,mRNA疫苗是一种比较安全的新型核酸疫苗。mRNA疫苗的分子设计及化学修饰的研究目前主要集中于增强其稳定性和降低其免疫原性。mRNA疫苗的传递主要包括脂质体、非脂质体、病毒、纳米颗粒等。新的传递方法也在不断产生。mRNA疫苗用于肿瘤、感染性疾病等的防治研究表明其具有良好的效果,有较好的应用前景。本文概述了mRNA疫苗近年来研究的新进展及其挑战,并对该领域的研究趋势进行了展望。

关键词： mRNA疫苗 mRNA传递蛋白表达肿瘤抗原

Current perspectives on mesenchymal stem cells as a potential therapeutic strategy for non-alcoholic fatty liver disease

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World Journal of Stem Cells 2024年第7期16卷 760-772页

作者： Yan jiang Narazah Mohd Yusoff jiang Du Emmanuel Jairaj Moses Jun-Tang Lin School of Nursing Xinxiang Medical UniversityXinxiang 453000Henan ProvinceChina Department of Biomedical Sciences Advanced Medical and Dental InstituteUniversiti Sains MalaysiaKepala Batas 13200Pulau PinangMalaysia Advanced Medical and Dental Institute Universiti Sains MalaysiaKepala Batas 13200Pulau PinangMalaysia Henan Joint International Research Laboratory of Stem Cell Medicine School of Medical EngineeringXinxiang Medical UniversityXinxiang 453003Henan ProvinceChina Stem Cells and Biotherapy Engineering Research Center of Henan National Joint Engineering Laboratory of Stem Cells and BiotherapySchool of Life Science and TechnologyXinxiang Medical UniversityXinxiang 453003Henan ProvinceChina Henan Joint International Research Laboratory of Stem Cell Medicine School of Medical EngineeringXinxiang Medical UniversityXinxiang 453000Henan ProvinceChina

Non-alcoholic fatty liver disease(NAFLD)has emerged as a significant health challenge,characterized by its widespread prevalence,intricate natural progression and multifaceted *** NAFLD initially presents as benign fat accumulation,it may progress to steatosis,non-alcoholic steatohepatitis,cirrhosis,and hepatocellular *** stem cells(MSCs)are recognized for their intrinsic self-renewal,superior biocompatibility,and minimal immunogenicity,positioning them as a therapeutic innovation for liver ***,this review aims to elucidate the potential roles of MSCs in alleviating the progression of NAFLD by alteration of underlying molecular pathways,including glycolipid metabolism,inflammation,oxidative stress,endoplasmic reticulum stress,and *** insights are expected to provide further understanding of the potential of MSCs in NAFLD therapeutics,and support the development of MSC-based therapy in the treatment of NAFLD.

关键词： Non-alcoholic induced fatty liver disease Mesenchymal stem cells Lipid accumulation Inflammation Oxidative stress Endoplasmic reticulum stress Fibrosis

Gelation mechanisms of gel polymer electrolytes for zinc-based batteries

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Chinese Chemical Letters 2024年第5期35卷 97-116页

作者： Mengjun Sun Zhi Wang Jvhui jiang Xiaobing Wang Chuang Yu Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals Key Laboratory of Green Chemical Media and ReactionsMinistry of EducationSchool of Chemistry and Chemical EngineeringHenan Normal UniversityXinxiang 453007China Key Laboratory for Yellow River and Huaihe River Water Environment and Pollution Control Ministry of EducationHenan Key Laboratory for Environmental Pollution ControlSchool of EnvironmentHenan Normal UniversityXinxiang 453007China State Key Laboratory of Advanced Electromagnetic Engineering and Technology School of Electrical and Electronic EngineeringHuazhong University of Science and TechnologyWuhan 430074China

Zinc-based batteries(ZBs)have been deemed as a potential substitute for lithium-ion batteries due to its unique advantages of abundant resources,low cost and acceptable energy *** great progress in designing electrode materials has been made,the development of high-performance ZBs still remain challenges,such as the dendrite growth of zinc anode,hydrogen evolution reaction,limited electrochemical stability window,water evaporation and liquid *** polymer electrolytes(GPEs),including hydrous GPEs with low content of active water and anhydrous GPEs without the presence of water,are proposed to avoid these ***,employing GPEs is conductive to fabricate flexible devices owing to the good mechanical *** date,most of researches focus on discovering new GPEs and exploring its application on flexible or wearable *** reviews also have outlined the polymer matrixes and advances of GPEs in various battery *** this,herein,we seek to summarize the gelation mechanisms of GPEs,involving physical gel of polymer,chemical crosslinking of polymer and chemical polymerization of ***,the preparation methods are also *** addition,not only the features and central conundrum of GPEs are analyzed but also the corresponding strategies are discussed,contributing to design GPEs with ideal properties for high-performance ZBs.

关键词： Gelation mechanisms Gel polymer electrolytes Zinc-based batteries Gelation methods

Direct enantioselective reduction of C=C bond of β-polyfluoro-alkylated enones via asymmetric photoredox catalysis

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Science China Chemistry 2024年第6期67卷 2016-2021页

作者： Linghong Zhang Jin Ma Xu Ban Xiaowei Zhao Yanli Yin Zhiyong jiang Key Laboratory of Natural Medicine and Immuno-Engineering of Henan Province Henan UniversityKaifeng475004China School of Chemistry and Chemical Engineering Henan Normal UniversityPingyuan LaboratoryXinxiang453007China College of Advanced Interdisciplinary Science and Technology Henan University of TechnologyZhengzhou450001China

Direct enantioselective reduction of the C=C bond ofβ-polyfluoro-alkylated enones is an important but long-pending subject in asymmetric ***,we report on the viability of visible light-driven cooperative photoredox and chiral hydrogenbonding catalysis to effectively address this challenge,as a variety of products are obtained in high yields(up to 85%)with good to excellent enantioselectivities(up to 98%ee).The formation of thermodynamically favorable enol intermediates after double single-electron reduction represents the center of the ***,the utility of the current method is validated by the convenient regio-specific and-diverse synthesis of various deuterated derivatives for these products using inexpensive D_(2)O as the deuterium source.

关键词： photoredox catalysis Br?nsted acids asymmetric reduction enantioselective protonation azaarenes

Involvement of the ABA-and H_(2)O_(2)-Mediated Ascorbate-Glutathione Cycle in the Drought Stress Responses of Wheat Roots

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Phyton-International Journal of Experimental Botany 2024年第2期93卷 329-342页

作者： Mengyuan Li Zhongye Gao Lina jiang Leishan Chen Jianhui Ma College of Life Science Henan Normal UniversityXinxiang453007China School of Life Science and Basic Medicine Xinxiang UniversityXinxiang453003China

Abscisic acid(ABA),hydrogen peroxide(H_(2)O_(2)) and ascorbate(AsA)–glutathione(GSH)cycle are widely known for their participation in various ***,the relationship between ABA and H_(2)O_(2) levels and the AsA–GSH cycle under drought stress in wheat has not been *** this study,a hydroponic experiment was conducted in wheat seedlings subjected to 15%polyethylene glycol(PEG)6000–induced *** stress caused the rapid accumulation of endogenous ABA and H_(2)O_(2) and significantly decreased the number of root tips compared with the *** application of ABA significantly increased the number of root tips,whereas the application of H_(2)O_(2) markedly reduced the number of root tips,compared with that under 15%*** addition,drought stress markedly increased the DHA,GSH and GSSG levels,but decreased the AsA levels,AsA/DHA and GSH/GSSG ratios compared with those in the *** activities of the four enzymes in the AsA–GSH cycle were also markedly increased under drought stress,including glutathione reductase(GR),ascorbate peroxidase(APX),monodehydroascorbate reductase(MDHAR)and dehydroascorbate reductase(DHAR),compared with those in the ***,the application of an ABA inhibitor significantly inhibited GR,DHAR and APX activities,whereas the application of an H_(2)O_(2) inhibitor significantly inhibited DHAR and MDHAR ***,the application of ABA inhibitor significantly promoted the increases of H_(2)O_(2) and the application of H_(2)O_(2) inhibitor significantly blocked the increases of ABA,compared with those under 15% *** together,the results indicated that ABA and H_(2)O_(2) probably interact under drought stress in wheat;and both of them can mediate drought stress by modulating the enzymes in AsA–GSH cycle,where ABA acts as the main regulator of GR,DHAR,and APX activities,and H_(2)O_(2) acts as the main regulator of DHAR and MDHAR activities.

关键词： ABA H_(2)O_(2) AsA-GSH cycle drought stress wheat roots