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A new polyacetylene glycoside from the rhizomes of Atractylodes lancea

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Chinese Chemical Letters 2010年第7期21卷 850-852页

作者： Ying ji xu feng Chao Cheng Xiao Yun Fa Dong Qi Zhi Wang Ming Wang You Yi Zhao jiangsu Center for Research & Development of Medicinal Plants Jiangsu Institute of BotanyChinese Academy of Sciences Nanjing Botanical GardenMem.Sun Yat-SenNanjing 210014China

A new polyacetylene glycoside,（1,3Z,11E）-tridecatriene-7,9-diyne-5-hydroxyl-6-O-β-D-glucopyranoside,was isolated from the rhizomes of Atractylodes lancea（Thunb.） *** structure was elucidated on the basis of spect... 详细信息

关键词： Atractylodes lancea Polyacetylene (1 3Z 11E)-Tridecatriene-7 9-diyne-5-hydroxyl-6-O-β-D-glucopyranoside

Low Th/U Pacific-type isotopic mantle domain of Paleo-Asian Ocean

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Low Th/U Pacific-type isotopic mantle domain of Paleo-Asian ...

The Electronic Structures and Catalytic Activities of Triruthenium Ketenylidene Clusters Supported on Oxides

作者： Xijun Liu ji-feng xu Wenjiao Xiao

The presence of Pacific-type and Indian-type mid-ocean ridge (MORB) isotopic source domains in the upper mantle is a clear manifestation of global-scale mantle compositional heterogeneities. The Indian-type mantle domain is a long-lived feature that can be traced back to, at least, the Palaeozoic Tethyan mantle domain. Few temporal constraints currently exist, however, regarding the longevity of Pacific-type mantle domain.

关键词： domain Low Th/U Pacific-type isotopic mantle domain of Paleo-Asian Ocean

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Chemical Research in Chinese Universities 1994年第2期10卷 115-119页

作者： LI Zhi-ru XIAO feng-shou ZHANG Yun-han WEI jia-you LI Jun feng ji-kang and xu Ru-ren(Department of Chemistry , jilin University , Changchun , 130023)

he catalytic activities of [H_nRu_3(CO)_9(CCO)]￣(-(2-n)) (n=0, 1 , 2 , 3) support-ed on oxides have been estimated using INDO calculations and correlation betweencatalytic activity and electronic structure for these clusters have been *** activity in ￣(13)CO isotopic exchange strongly relates to the bond orders of Ru-CO and C-CO, and the activity in alkylation with nucleophile or electrophile de-pends mainly on the net charges at Ca atoms. In addition, the possible species of[H_3Ru_3(CO)_9(CCO)]￣+ has been proposed although it has not been synthesized upto now.

关键词： Triruthenium ketenylidene clusters Electronic structures Catalyticactivities

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英国“教育研究”的学科基准述评

教育科学 2009年第2期25卷 64-68页

作者：季旭峰胡锋吉丽水学院教育学院浙江丽水323000

2000年,英国高等教育质量保证署(QAA)发布了"教育研究"(本科荣誉学位)的学科基准,以帮助高等教育机构设计和发展教育研究类课程。2007年,依据定期审核的结果对此进行了修订。本文评介了英国"教育研究"的学科基准及其在三所大学中的应用... 详细信息

2000年,英国高等教育质量保证署(QAA)发布了"教育研究"(本科荣誉学位)的学科基准,以帮助高等教育机构设计和发展教育研究类课程。2007年,依据定期审核的结果对此进行了修订。本文评介了英国"教育研究"的学科基准及其在三所大学中的应用状况。

关键词：英国教育研究学科基准专业规格

Mechanism Study on the Effect of Retarder on Polyurethane Setting Time Based on Molecular Simulation

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 224-231页

作者： WU Yuxuan xu Wenyuan YU Tianlai ji Yongcheng School of Civil Engineering Northeast Forestry UniversityHarbin 150040China

This study identified castor oil and phosphate ester as effective retarders through setting time,tensile,and flexural tests,and determined their optimal *** mechanism by which phosphate ester affects the setting time of polyurethane was further investigated using molecular dynamics *** transform infrared spectroscopy was also employed to systematically study the physical and chemical interactions between phosphate esters and polyurethane *** results demonstrate that a 1%concentration of phosphate ester provides the most effective retarding effect with minimal impact on the strength of *** phosphate ester is added to the B component of the two-component polyurethane system,its interaction energy with component A decreases,as do the diffusion coefficient and aggregation degree of component B on the surface of component *** reduction in interaction slows the setting ***,the addition of phosphate ester to polyurethane leads to the disappearance or weakening of functional groups,indicating competitive interactions within the phosphate ester components that inhibit the reaction rate.

关键词： polyurethane retarder setting time molecular dynamics diffusion coefficient

Preparation and Performance of Ternary Early Strength Agent and Quercetin Composite Cement Sealing Material

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Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 130-140页

作者： LIU jian CHEN Meiting ji Xiaoli xu Chao WANG Chunmei Department of Safety Science and Engineering Anhui University of Science and TechnologyHuainan 232001China Key Laboratory of Mine Safety and High Efficient Mining Jointly Built by Province and Education Ministry Anhui University of Science and TechnologyHuainan 232001China Department of Chemical Engineering and Explosives Anhui University of Science and TechnologyHuainan 232001China

A ternary early-strengthening agent consisting of calcium formate+triethanolamine+lithium sulfate was compounded with quercetin to shorten the setting time of cementitious materials while ensuring their early *** optimum ratio of the three early-strengthening agents was determined as 0.5%calcium formate+0.04%triethanolamine+0.4%lithium sulfate by response surface *** effects of the ternary early-strengthening agent composed of calcium formate+triethanolamine(TEA)+lithium sulfate on cementitious pore sealing materials under the synergistic effect of quercetin were studied by means of the performance tests of compressive strength,fluidity,and setting time,and the microstructural characterizations of X-ray powder diffractometer(XRD),thermogravimetry(TG-DSC)and scanning electron microscopy(SEM).The study shows that the synergistic effect of ternary early-strengthening agent and quercetin forms a multi-performance composite admixture for cementitious *** best performance was obtained with the compounding scheme of 0.5%calcium formate+0.04%triethanolamine+0.4%lithium sulfate ternary early-strengthening agent and 0.05%*** compressive strength of 1,3,7,and 28 d are 94.8%,39.8%,42%,and 28%higher than those of the blank group,*** initial time and final setting time are 41 and 57 minutes,*** to the microscopic analysis,the network and fibrous C-S-H gels generated by ternary early-strengthening agents are attached to the surface promoted by quercetin,which forms skeleton support while thickening and solidifying the cement slurry,which enhances the early compressive strength of the cement-based materials.

关键词： sealing material ternary early-strengthening agent quercetin synergetic effect response surface methodology

高校青年教师诚信文化生成研究——基于什托姆普卡信任理论的视角

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中国青年社会科学 2019年第1期38卷 90-95页

作者：胡锋吉季旭峰丽水学院教务处浙江丽水323000 丽水学院继续教育学院浙江丽水323000

青年教师诚信文化是高校文化的重要组成部分,深刻持久地影响着学校文化引领作用的发挥。对于当前高校青年教师的诚信行为与文化,什托姆普卡的"信任文化的社会生成"理论具有重要的解释意义与实践价值。依据什托姆普卡的信任理论,高校青... 详细信息

青年教师诚信文化是高校文化的重要组成部分,深刻持久地影响着学校文化引领作用的发挥。对于当前高校青年教师的诚信行为与文化,什托姆普卡的"信任文化的社会生成"理论具有重要的解释意义与实践价值。依据什托姆普卡的信任理论,高校青年教师诚信文化生成条件应包括学校的结构环境、个人和学校情绪、个人和学校资源。结合生成条件,可以通过强化教育、固化制度、调整心态、矫治行为等策略促进高校青年教师诚信文化的生成。

关键词：高校青年教师诚信文化什托姆普卡信任理论

Mainchain conformation ordering self-assembly tailored room temperature phosphorescence emission

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Science China Chemistry 2025年第1期68卷 329-336页

作者： Yuzhu Li Yumeng Gao feng Tian Yu Wang Yuan Yao Shaoliang Lin Xiang Ma Binbin xu Shanghai Key Laboratory of Advanced Polymeric Materials Key Laboratory for Ultrafine Materials of Ministry of Education School of Materials Science and Engineering East China University of Science and Technology Shanghai Synchrotron Radiation Facility Shanghai Advanced Research Institute Chinese Academy of Sciences Key Laboratory for Advance Materials and Feringa Noble Prize Scientist Joint Research Centre Frontiers Science for Materiobiology and Dynamic Chemistry School of Chemistry and Molecular Engineering East China University of Science & Technology

Developing organic room-temperature phosphorescence （RTP） materials with a wide range of tunable-emission is significant in expanding the applications of RTP ***,we rationally designed amphiphilic alternating copolymers poly(1,2-bis（4-alkoxyphenyl）ethane-1,2-dione-alt-（ethylene glycol）x)(P（Bz-alt-EGx）) that combined the advantage of alternating benzil and EGxskeleton,and tunable mainchain *** a mainchain conformation ordering assembly （COA） process,P（Bz-alt-EGx） self-assembled into well-defined platelets,and such assemblies emitted blue RTP at ca.425 nm due to the ordered folded-chain conformation and confined *** contrast,traditional self-assembly （TA） of P（Bz-alt-EGx） obtained less ordered aggregates,such as asymmetric worms,vesicles,and rod-like *** resultant less ordered aggregates exhibited yellow-green RTP at ca.550 *** wide-tuning RTP emission in solution （between blue and yellow-green,over125 nm） is realized using the P（Bz-alt-EGx） alternating copolymers under the treatment of different self-assembly *** study uncovers a new strategy to tailor the RTP emission through different self-assembly pathways and holds great promise for the fabrication of advanced optical materials.

关键词： self-assembly conformation ordering alternating copolymer phosphorescence emission

Perfluoropentane-based oxygen-loaded nanodroplets reduce microglial activation through metabolic reprogramming

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Neural Regeneration Research 2025年第4期20卷 1178-1191页

作者： Wanxian Luo Chuanhui xu Linxi Li Yunxiang ji Yezhong Wang Yingjia Li Yongyi Ye Department of Medicine Ultrasonics Nanfang HospitalSouthern Medical UniversityGuangzhouGuangdong ProvinceChina Institute of Neuroscience Department of NeurosurgeryThe Second Affiliated Hospital of Guangzhou Medical UniversityGuangzhouGuangdong ProvinceChina

Microglia,the primary immune cells within the brain,have gained recognition as a promising therapeutic target for managing neurodegenerative diseases within the central nervous system,including Parkinson’s *** perfluorocarbon droplets have been reported to not only possess a high oxygen-carrying capacity,but also exhibit remarkable anti-inflammatory ***,the role of perfluoropentane in microglia-mediated central inflammatory reactions remains poorly *** this study,we developed perfluoropentane-based oxygen-loaded nanodroplets(PFP-OLNDs)and found that pretreatment with these droplets suppressed the lipopolysaccharide-induced activation of M1-type microglia in vitro and in vivo,and suppressed microglial activation in a mouse model of Parkinson’s *** suppression led to a reduction in the inflammatory response,oxidative stress,and cell migration capacity in ***,the neurotoxic effects were mitigated,which alleviated neuronal ***,ultrahigh-performance liquid chromatography–tandem mass spectrometry showed that the anti-inflammatory effects of PFP-OLNDs mainly resulted from the modulation of microglial metabolic *** further showed that PFP-OLNDs regulated microglial metabolic reprogramming through the AKT-mTOR-HIF-1α***,our findings suggest that the novel PFP-OLNDs constructed in this study alleviate microglia-mediated central inflammatory reactions through metabolic reprogramming.

关键词： metabolic reprogramming microglia microglial migration nanotherapy neurodegenerative diseases neuroinflammation oxygen-loaded nanodroplets Parkinson’s disease perfluoropentane ultra-performance liquid chromatography–mass spectrometry