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Optimization of dendritic TS-1/Silica micro–mesoporous composites for efficient hydrodesulfurization of dibenzothiophene and 4,6-dimethyldibenzothiophene

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Petroleum Science 2023年第4期20卷 2521-2530页

作者： Cheng-Kun Xiao Yu-Tong Zou dong-Ze Li En-Hua Wang Ao-Cheng Wang dao-Wei Gao Ai-Jun Duan Peng Zheng Xi-Long Wang State Key Laboratory of Heavy Oil Processing China University of PetroleumBeijing102249China School of Chemistry and Chemical Engineering University of JinanJinanShandong250022China

A novel composite material(TD)composed of TS-1 microcrystalline and dendritic mesoporous silica nanospheres(DMSNs)was successfully *** TD composite material had open pore structure and large specific surface area,which was conducive to the mass transfer of reactants and *** Ti element in TS-1 could be used as an electron assistant,and the spillover d-electrons were conducive to the improvement of the sulfidation and dispersion of MoS_(2),thereby forming more type II MoS_(2) active *** incorporation of Ti could bring more Brønsted(B)and Lewis(L)acid,which was conducive to the hydrogenation pathway(HYD)selectivity(41.2%)of dibenzothiophene(DBT)hydrodesulfurization(HDS)and isomerization(ISO)route selectivity(21.9%)of 4,6-dimethyldibenzothiophene(4,6-DMDBT)HDS,thus improve the HDS activity of DBT and 4,***/TD-70(Aging temperature=70℃)had the best HDS activities of DBT(99.0%)and 4,6-DMDBT(93.7%)due to its large open pore structure,good acidity,suitable metal-support interaction(MSI)and perfect dispersion of the metallic active sites.

关键词： Dendritic TS-1-DMSNs composites NiMo/TD catalysts Dibenzothiophene4,6-Dimethyldibenzothiophene Hydrodesulfurization

GB/T 4208-2017与GB/T 2423.37-2006防尘测试差异分析

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环境技术 2024年第7期42卷 235-241页

作者：金冬磊林道祺曹忠尧沈飞顾擎宇俞春阳嘉兴威凯检测技术有限公司嘉兴314004 威凯检测技术有限公司广州510530

根据GB/T 4208-2017,GB/T 2423.37-2006,比较两份标准中对防尘测试的规定,本文参照试验方法,对各个要求进行解释,介绍如何选择与自身产品相适应的防尘测试等级,以供设计时参考。

关键词： GB/T 4208-2017 GB/T 2423.37-2006 IP代码防尘测试

Exploiting Complex-Type N-Glycan to Improve the in Vivo Stability of Bioactive Peptides

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CCS Chemistry 2023年第7期5卷 1623-1634页

作者： Qijia Wei Jun Zhang Yuankun dao Mengliang Ye Dangliang Liu Weidong dong Ning Yuan Hongxing Li Chunli Song Mo Li Xiaomeng Shi Suwei dong State Key Laboratory of Natural and Biomimetic Drugs Peking UniversityBeijing 100191 Chemical Biology Center Peking UniversityBeijing 100191 Department of Chemical Biology School of Pharmaceutical SciencesPeking UniversityBeijing 100191 Department of Orthopedics Peking University Third HospitalBeijing 100191 Center for Reproductive Medicine Department of Obstetrics and GynecologyPeking University Third HospitalBeijing 100191 National Clinical Research Center for Obstetrics and Gynecology Peking University Third HospitalBeijing 100191 Beijing Key Laboratory of Reproductive Endocrinology and Assisted Reproductive Technology Peking University Third HospitalBeijing 100191

Peptides can be potentmolecules with high efficacy and selectivity in the development of ***,the poor pharmacokinetic properties of peptides pose major challenges for their broader medicinal *** by the proteinstabilizing role of natural N-glycosylation,we design and synthesize a series of parathyroid hormone(PTH)peptides(1-34),bearing either N-GlcNAc or biantennary complex-type N-glycan modification,and evaluate their serum stability and biological *** results indicate that an N-Asn-linked complex-type sialylundecasaccharide can increase the serum half-life and in vivo bioactivity of PTH peptides with a broad tolerance of modification ***,hydrogen/deuterium exchange mass spectroscopy indicates that the larger-sized Nglycan can induce enhanced hydration dynamics in its surroundings,which may facilitate an improved resistance for the peptide against enzymatic *** sialylundecasaccharide-based peptideengineering strategy has also been applied to glucagon-like peptide-1(7-37),leading to glycopeptides with enhanced hypoglycemic activity and acting time in ***,these results demonstrate the potential of using sialylated complextype N-glycan as a general engineering strategy for developing long-acting peptide therapeutics.

关键词： therapeutic peptides stability Nglycosylation solid-phase peptide synthesis chemoenzymatic approach hydrogen-deuterium exchange mass spectrometry

Visible light induced four component reaction of styrene for the access of thiodifluoroesters

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中国化学快报:英文版 2023年第9期34卷 143-146页

作者： Shao-Hui Yang Jing-Cheng Song Hao Yang Meng-Yu Zhou Ze-Hui Wei Jia-Hui Gao dao-Qing dong Zu-Li Wang College of Chemistry and Pharmaceutical Sciences Qingdao Agricultural UniversityQingdao 266109China National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass Nanjing Forestry UniversityNanjing 210037China

The visible light induced multicomponent reaction of styrene,carbon disulfide,amine and ethyl difluorobromoacetate for the synthesis of thiodifluoroesters is *** developed protocol offers a facile and general route to access various valuable thiodifluoroesters in moderate to good *** mechanistic studies revealed that a radical process might be involved in this transformation.

关键词： Green chemistry Visible light Thiodifluoroester Radical Multicomponent reaction

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邵雍“先天”“后天”义辨

洛阳师范学院学报 2024年第6期43卷 33-38页

作者：曹栋西北大学中国思想文化研究所陕西西安710100 咸阳师范学院马克思主义学院陕西咸阳712000

“先天”“后天”是贯穿邵雍思想始终的一对概念,基本义是分判伏羲之易与文王之易,或融摄先天图与后天图、易道与易书的易学形态,核心义是融摄境界与工夫、用与体、自然与人事的“心迹之辩”。兼综二义,将“先天”统摄为“生长收藏”的... 详细信息

“先天”“后天”是贯穿邵雍思想始终的一对概念,基本义是分判伏羲之易与文王之易,或融摄先天图与后天图、易道与易书的易学形态,核心义是融摄境界与工夫、用与体、自然与人事的“心迹之辩”。兼综二义,将“先天”统摄为“生长收藏”的自然之道,为始、为用;将“后天”统摄为“兴衰存亡”的人事之道,为终、为体。“知权明变”的圣人之道贯通“先天”与“后天”、始与终、用与体。探索邵雍贯通“先天”与“后天”的价值追求,对判断其“儒道兼综”的学术身份具有重要意义。

关键词：邵雍先天后天易心

基于高密度遗传图谱的玉米雄穗分枝数QTL定位

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玉米科学 2024年第5期32卷 32-39页

作者：张莹莹张君孙海潮张盼董文恒李永江史丽丽卢道文张凤启庞文喜安阳市农业科学院河南安阳455000 河南省农业科学院粮食作物研究所郑州450002

利用PD80和PHJ65组配的包含310个家系的重组自交系群体为材料,结合在3个单环境条件下的雄穗分枝数表型值和最佳线性无偏预测值,经完备区间作图法在包含8384个SNP标记的连锁图谱上共检测到11个QTLs,分别位于1、2、4、5、7、8染色体上,LO... 详细信息

利用PD80和PHJ65组配的包含310个家系的重组自交系群体为材料,结合在3个单环境条件下的雄穗分枝数表型值和最佳线性无偏预测值,经完备区间作图法在包含8384个SNP标记的连锁图谱上共检测到11个QTLs,分别位于1、2、4、5、7、8染色体上,LOD值为4.99~11.42,表型贡献率为4.62%~11.80%。在2个以上单环境和BLUP值下重复检测到5个QTLs(qTBN1.1、qTBN2.1、qTBN4、qTBN5、qTBN7)。其中,qTBN1.1、qTBN5表型贡献率大于10%,属于稳定的主效QTLs,物理区间分别位于第1染色体303.01~304.87 Mb(B73_RefGen_v4_genomic)、第5染色体168.16~170.97 Mb。基于生物信息学分析及基因功能注释在2个主效QTL位点筛选出19个高表达的候选基因。

关键词：玉米雄穗分枝数重组自交系 QTL定位

酷似急性前壁心肌梗死中年女性暴发性心肌炎成功抢救1例

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心脏杂志 2024年第2期36卷 247-248,F0003页

作者：公绪合王佳丽姚道阔沈爱东李虹伟陈晖首都医科大学附属北京友谊医院心脏中心北京100050

1临床资料53岁女性,“间断胸闷1 d”入院,既往体健,患者1天前做饭过程中突发胸闷、憋气,伴头晕、心悸、出汗,无胸痛、晕厥、黑曚,无发热、咳嗽与咳痰,自服糖果后约40 min缓解,患者未诊治。后患者无诱因仍反复胸闷,憋气、出汗,就诊急诊... 详细信息

1临床资料53岁女性,“间断胸闷1 d”入院,既往体健,患者1天前做饭过程中突发胸闷、憋气,伴头晕、心悸、出汗,无胸痛、晕厥、黑曚,无发热、咳嗽与咳痰,自服糖果后约40 min缓解,患者未诊治。后患者无诱因仍反复胸闷,憋气、出汗,就诊急诊心电图(图1A)窦性节律.

关键词：暴发性心肌炎心源性休克主动脉球囊反搏糖皮质激素心肌活检

C(sp^(3))-H bond functionalization of oximes derivatives via 1,5-hydrogen atom transfer induced by iminyl radical

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Chinese Chemical Letters 2022年第3期33卷 1199-1206页

作者： dao-Qing dong Jing-Cheng Song Shao-Hui Yang Qi-Xue Qin Zu-Li Wang En-Xuan Zhang Yuan-Yuan Sun Qing-Qing Han Shan Yue College of Chemistry and Pharmaceutical Sciences Qingdao Agricultural UniversityQingdao 266109China Asymchem Life Science(Tianjin)Co. Ltd.Tianjin 300457China

Oximes derivatives have been vastly used in organic synthesis. In this review, C(sp^(3))-H bond functionalization of oximes derivatives via iminyl radical induced 1,5-hydrogen atom transfer was discussed. According to the different type of products, this review was divided into three parts: (1) C(sp^(3))-H bond functionalization for C-C bond formation. (2) C(sp^(3))-H bond functionalization for C-N bond formation. (3) C(sp^(3))-H bond functionalization for C-S, C-F bond formation.

关键词： Oximes derivatives 1 5-hydrogen atom transfer Iminyl radicals C(sp^(3))-H Bond Visible light

Analytical solution for 1D consolidation of unsaturated soil with mixed boundary condition

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2013年第1期14卷 61-70页

作者： Zhen-dong SHAN dao-sheng LING Hao-jiang DING MOE Key Lab of Soft Soils and Geo-environmental Engineering Zhejiang University Institute of Engineering Mechanics China Earthquake Administration

Based on consolidation equations proposed for unsaturated soil, an analytical solution for 1D consolidation of an unsaturated single-layer soil with nonhomogeneous mixed boundary condition is developed. The mixed boundary condition can be used for special applications, such as tests occur in laboratory. The analytical solution is obtained by assuming all material parameters remain constant during consolidation. In the derivation of the analytical solution, the nonhomogeneous boundary condition is first transformed into a homogeneous boundary condition. Then, the eigenfunction and eigenvalue are derived according to the consolidation equations and the new boundary condition. Finally, using the method of undetermined coefficients and the orthogonal relation of the eigenfunction, the analytical solution for the new boundary condition is obtained. The present method is applicable to various types of boundary conditions. Several numerical examples are provided to investigate the consolidation behavior of an unsaturated single-layer soil with mixed boundary condition.

关键词：英文摘要编辑工作优秀论文医学期刊