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Modified iron-molybdate catalysts with various metal oxides by a mechanochemical method:enhanced formaldehyde yield in methanol partial oxidation

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Frontiers of Chemical Science and Engineering 2021年第5期15卷 1099-1110页

作者： xue Liu Lingtao Kong shengtao xu Chaofan Liu Fengyun Ma Key Laboratory of Coal Clean Conversion&Chemical Engineering Process of Xinjiang Uyghur Autonomous Region College of Chemistry and Chemical EngineeringXinjiang UniversityUrumqi830046China

A mechanochemical method was employed to prepare modified iron molybdate catalysts with various metal salts as *** physicochemical properties of the iron molybdate catalysts were characterized,and their performances in catalyzing the reaction from methanol to formaldehyde(HCHO)were *** molybdate catalysts doped with Co(NO_(3))_(2)·6H_(2)Oand Al(NO_(3))_(3)·9H_(2)O resulted in high HCHO *** with a commercial catalyst,the HCHO yields in the reaction with the modified catalyst at an optimal Co/Mo molar ratio reached 97.37%.According to chemical state analysis,the formation of CoO and the efficient decrease in the MoO_(3)sublimation rate could be important factors enhancing the HCHO yield in reactions catalyzed with iron molybdate doped with different Co/Mo mole ratios.

关键词： iron molybdate catalyst metal oxides methanol to formaldehyde Co/Mo ratio formaldehyde yield

Effects of iron precursors on the structure and catalytic performance of iron molybdate prepared by mechanochemical route for methanol to formaldehyde

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Chinese Journal of Chemical Engineering 2020年第6期28卷 1603-1611页

作者： Lingtao Kong shengtao xu xue Liu Chaofan Liu Dandan Zhang Ling Zhao Key Laboratory of Coal Clean Conversion&Chemical Engineering Process College of Chemistry and Chemical EngineeringXinjiang UniversityUrumqi 830046China Key Laboratory of Oil and Gas Fine Chemicals of Education College of Chemistry and Chemical EngineeringXinjiang UniversityUrumqi 830046China

Mechanochemical synthesis has been applied for many novel material preparations and gained more and more attention due to green and high-efficiency recently. In order to explore the influences of iron precursors on structure and performance of iron molybdate catalyst prepared by mechanochemical route, three typical and cheap iron precursors have been used in preparation of iron molybdate catalyst. Many characterization methods have been employed to obtain the physical and chemical properties of iron molybdate catalyst. Results indicate that iron precursors have the significant impact on the phase composition, crystal morphology and catalytic performance in the conversion of methanol to formaldehyde. It is hard to regulate the phase composition by changing Mo/Fe mole ratios for Fe2(SO4)3 as iron precursor. In addition, as for Fe2(SO4)3, the formaldehyde yield is lower than that from iron molybdate catalyst prepared with Fe(NO3)3·9H2O due to the reduction in Fe2(MoO4)3 phase as active phase. Based on mechanochemical and coprecipitation method, the solvent water could be a key factor for the formation of MoO3 and Fe2(MoO4) for FeCl3·6H2O and Fe2(SO4)3 as precursors. Iron molybdate catalyst prepared with Fe(NO3)3·9H2O by mechanochemical route, shows the best methanol conversion and formaldehyde yield in this reaction.

关键词： Iron precursors Mechanochemical route Iron molybdate catalyst Methanol oxidation

Current development of bicyclic peptides

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Chinese Chemical Letters 2023年第6期34卷 130-143页

作者： Dazhi Feng Lihua Liu Yuqi Shi Pian Du shengtao xu Zheying Zhu Jinyi xu Hong Yao State Key Laboratory of Natural Medicines and Department of Medicinal Chemistry China Pharmaceutical UniversityNanjing 210009China School of Pharmacy The University of NottinghamUniversity Park CampusNottingham NG72RDUnited Kingdom

Bicyclic peptides,a class of polypeptides with two loops within their structure,have emerged as powerful tools in the development of new peptide *** have the potential to bind to challenged drug targets,with antibody-like affinity and ***,bicyclic peptides possess small molecule-like access to chemical synthesis,which is conducive to large-scale synthesis and *** the last five years,bicyclic peptide technology has been increasingly developed,and researchers have carried out a variety of studies to elucidate the potential functions of bicyclic *** the continuous development of synthetic methods and the advances of new technology to build bicyclic peptide libraries,bicyclic peptides are now becoming widely used in the development of new drugs for various *** perspective provides an overview of the structure types,synthesis and applications of bicyclic peptides in current drug development,and our own views on future challenges of bicyclic peptides.

关键词： Peptide therapeutics Bicyclic peptides Protein-protein interaction Peptides synthesis Peptide drugs

Molecular glues modulate protein functions by inducing protein aggregation:A promising therapeutic strategy of small molecules for disease treatment

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Acta Pharmaceutica Sinica B 2022年第9期12卷 3548-3566页

作者： Hongyu Wu Hong Yao Chen He Yilin Jia Zheying Zhu shengtao xu Dahong Li Jinyi xu State Key Laboratory of Natural Medicines Department of Medicinal ChemistryChina Pharmaceutical UniversityNanjing 210009China Division of Molecular Therapeutics&Formulation School of Pharmacythe University of NottinghamUniversity Park CampusNottingham NG72RDUK Key Laboratory of Structure-Based Drug Design&Discovery Ministry of EducationSchool of Traditional Chinese Materia MedicaShenyang Pharmaceutical UniversityShenyang 110016China

Molecular glues can specifically induce aggregation between two or more proteins to modulate biological *** recent years,molecular glues have been widely used as protein *** addition,however,molecular glues play a variety of vital roles,such as complex stabilization,interactome modulation and transporter inhibition,enabling challenging therapeutic targets to be druggable and offering an exciting novel approach for drug *** most molecular glues are identified serendipitously,exploration of their systematic discovery and rational design are *** this review,representative examples of molecular glues with various physiological functions are divided into those mediating homo-dimerization,homo-polymerization and hetero-dimerization according to their aggregation modes,and we attempt to elucidate their mechanisms of *** particular,we aim to highlight some biochemical techniques typically exploited within these representative studies and classify them in terms of three stages of molecular glue development:starting point,optimization and identification.

关键词： Small molecule Molecular glue Dimerization Polymerization Protein–protein interaction

植物覆盖对香蕉园土壤真菌多样性及群落结构的影响

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中国农学通报 2024年第23期40卷 60-67页

作者：张文龙王永芬徐胜涛杨丽梅周昀璠李迅东郑泗军云南省农业科学院农业环境资源研究所昆明650205 云南农业大学植物保护学院昆明650201 云南省农业科学院热带亚热带经济作物研究所云南保山678000 国际生物多样性中心昆明650205

高度集约化的农业措施致使蕉园土壤退化日趋严重,制约了中国香蕉产业的健康可持续发展。植物覆盖能够改善土壤理化性质,优化土壤微生物群落结构,是一种重要的改善农业生态系统土壤退化的耕作措施。本研究通过宽窄行种植方式,以传统的裸... 详细信息

高度集约化的农业措施致使蕉园土壤退化日趋严重,制约了中国香蕉产业的健康可持续发展。植物覆盖能够改善土壤理化性质,优化土壤微生物群落结构,是一种重要的改善农业生态系统土壤退化的耕作措施。本研究通过宽窄行种植方式,以传统的裸露土壤种植方式为对照,在宽行中人工种植大翼豆[Macroptilium atropurpureum(DC.)Urb.]和自然生杂草为植物覆盖处理,通过连续定位试验,采集土壤样品并进行高通量测序,分析蕉园在植物覆盖下的土壤真菌多样性及群落结构的差异特征,以期探索蕉园土壤可持续利用种植模式。结果表明:蕉园植物覆盖处理下真菌群落组成差异显著,并随着覆盖年限增加呈现加强的趋势。根据FUNguild功能预测,与对照相比,大翼豆覆盖处理2019年和2020年Saprotroph_Symbiotroph真菌种群显著地(P≤0.05)增加,2020年Pathogen_Saprotroph真菌种落显著(P≤0.05)降低。共线性网络分析结果表明大翼豆覆盖处理与对照相比,群落复杂性无差异,但群落稳定性更高。同时核心物种无镰刀菌属ASVs,这可能反映了大翼豆覆盖可以减少镰刀属ASVs在群落中主导力,降低土传病害香蕉枯萎病的潜在发生风险。大翼豆处理有效提高了共生有益真菌群,减少了潜在的致病真菌群,有利于保持香蕉种植中的土壤健康。宽窄行与行间覆盖植物相结合的种植技术可有效改善土壤微生物多样性,有利于香蕉产业的可持续发展。

关键词：覆盖作物香蕉土壤真菌多样性群落结构

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植物生长营养液对燕麦生长和产量的影响

作物杂志 2012年第1期 61-64页

作者：刘慧军刘景辉徐胜涛郭敏内蒙古农业大学农学院内蒙古呼和浩特010019

为明确植物生长营养液对燕麦生长及产量的影响,研究了燕麦拔节期、抽穗期和灌浆期喷施相同量不同稀释倍数的植物营养液后燕麦株高、干物质积累量、产量及产量构成因素的变化。结果表明:不同稀释倍数的营养液均可以缩短燕麦生育期,其中50... 详细信息

为明确植物生长营养液对燕麦生长及产量的影响,研究了燕麦拔节期、抽穗期和灌浆期喷施相同量不同稀释倍数的植物营养液后燕麦株高、干物质积累量、产量及产量构成因素的变化。结果表明:不同稀释倍数的营养液均可以缩短燕麦生育期,其中500倍稀释液与对照相比可提前7d成熟;各营养液处理的燕麦株高、干物质积累量和叶面积在抽穗期、灌浆期和成熟期均高于对照,各指标均随着稀释倍数的增加先升高后降低;喷施植物营养液后燕麦穗数、穗粒数、千粒重和产量均增加,喷施500倍稀释液后,燕麦穗数、生物产量和子粒产量与其他处理间差异均达显著水平,子粒增产达15.9%。

关键词：燕麦植物生长营养液产量产量构成因素

保水剂不同用法下马铃薯形态特征、渗透调节物质及产量的变化

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西北农业学报 2011年第10期20卷 58-63页

作者：李倩刘景辉张磊徐胜涛陈勤刘慧军内蒙古农业大学农学院呼和浩特010019 加拿大农业食品部列桥研究中心

以马铃薯品种克新1号为材料,设对照、保水剂穴施、沟施和拌种4个处理,分析马铃薯形态特征、渗透调节物质及产量的变化。结果表明,株高随生育时期的推进逐渐增大,至淀粉积累期时,穴施处理的株高较高,是对照处理的1.21倍;植株鲜质量、干... 详细信息

以马铃薯品种克新1号为材料,设对照、保水剂穴施、沟施和拌种4个处理,分析马铃薯形态特征、渗透调节物质及产量的变化。结果表明,株高随生育时期的推进逐渐增大,至淀粉积累期时,穴施处理的株高较高,是对照处理的1.21倍;植株鲜质量、干质量具有相似的变化趋势,随生育时期的推进均逐渐增加,块茎形成期后增加较为迅速,淀粉积累期时加施保水剂处理的生物量均高于对照处理。脯氨酸含量随生育时期的推进呈上升趋势,淀粉积累期时,拌种处理脯氨酸含量比对照大11.19%,其他处理均低于对照。叶片中可溶性糖含量先逐渐升高,而后下降,逐渐向薯块中转移。叶绿素含量呈单峰曲线变化。穴施处理产量最高,高出对照8.37个百分点,其次是沟施,拌种处理产量较低。加施保水剂处理基本较利于旱作马铃薯增产。

关键词：马铃薯保水剂渗透调节物质叶绿素产量

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不同粒径保水剂对土壤水分及燕麦生长的影响

西北农业学报 2012年第8期21卷 89-93,100页

作者：刘慧军刘景辉徐胜涛侯冠男李倩内蒙古农业大学农学院呼和浩特010019

以燕麦燕科1号为材料,研究不同粒径保水剂对土壤水分及燕麦生长的影响。结果表明,不同粒径保水剂均可提高0～100cm土层土壤质量含水量,10～60cm各土层各处理差异较明显;施用保水剂可明显提高燕麦株高、叶面积指数和干物质积累量,其中以... 详细信息

以燕麦燕科1号为材料,研究不同粒径保水剂对土壤水分及燕麦生长的影响。结果表明,不同粒径保水剂均可提高0～100cm土层土壤质量含水量,10～60cm各土层各处理差异较明显;施用保水剂可明显提高燕麦株高、叶面积指数和干物质积累量,其中以小粒径保水剂效果较佳;保水剂能提高燕麦穗数、穗粒数和千粒质量,从而显著(P<0.01)提高燕麦产量,大小粒径保水剂分别比对照增产12.65%和16.61%;大小粒径保水剂均可显著(P<0.01)提高燕麦水分利用效率,分别比对照增加15.12%和23.56%。说明,小粒径保水剂在提高当地土壤水分和促进燕麦生长方面优于大粒径保水剂。

关键词：保水剂燕麦土壤水分生长产量

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巴曲抗栓酶与氟桂利嗪治疗眩晕的疗效观察

西南军医 2009年第4期11卷 612-613页

作者：徐生涛欧海军舒增平徐生南大邑县妇幼保健院大邑县急救指挥分中心四川成都611330 隆昌县人民医院四川隆昌642158

目的比较巴曲抗栓酶与氟桂利嗪治疗眩晕的疗效及安全性。方法83例眩晕病人分为两组,巴曲抗栓酶组42例,在常规输注肌苷和维生素C基础上,给予巴曲抗栓酶治疗;氟桂利嗪组41例,给氟桂利嗪片治疗。均于入组前及治疗2周后对眩晕强度、频度和... 详细信息

目的比较巴曲抗栓酶与氟桂利嗪治疗眩晕的疗效及安全性。方法83例眩晕病人分为两组,巴曲抗栓酶组42例,在常规输注肌苷和维生素C基础上,给予巴曲抗栓酶治疗;氟桂利嗪组41例,给氟桂利嗪片治疗。均于入组前及治疗2周后对眩晕强度、频度和持续时间进行定量评价及统计学处理。结果两组治疗2周后,眩晕3项指标均明显改善(P<0.01),巴曲抗栓酶组眩晕强度及频度的改善较氟桂利嗪组更显著(P<0.01)。巴曲抗栓酶不良反应少,而氟桂利嗪不良反应较多,并有因不良反应重而停药者。结论巴曲抗栓酶治疗眩晕的疗效和安全性均优于氟桂利嗪。

关键词：巴曲抗栓酶氟桂利嗪眩晕