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Decavanadate-based Transition Metal Hybrids as Bifunctional Catalysts for Sulfide Oxidation and C-C Bond Construction

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Chinese Journal of Chemistry 2021年第9期39卷 2495-2503页

作者： Xianqiang Huang Xiaoyu Gu Yuquan Qi Yanru Zhang Guodong Shen Bingchuan Yang Wenzeng Duan shuwen gong Zechun Xue Yifa Chen Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology School of Chemistry&Chemical EngineeringLiaocheng UniversityLiaochengShandong 252059China Jiangsu Collaborative Innovation Centre of Biomedical Functional Materials Jiangsu Key Laboratory of New Power BatteriesSchool of Chemistry and Materials ScienceNanjing Normal UniversityNanjingJiangsu 210023China

The development of bifunctional catalysts has drawn much attention in realizing efficient and feasible catalytic systems to meet the diverse dema nd of pote ntial industrial applications.Desig n of stable and powerful bifun ctional catalysts for various catalysis systems is highly desirable yet largely unmet.Here,three kinds of decavanadate-based transition metal hybrids(DTMH)(i.e.,Co-DTMH,Ni-DTMH and Ag-DTMH)have been successfully synthesized through a pH tuning strategy and further characterized.Specifically,the rare M05N six-coordinated transition metal coordination modes have been detected in Co-DTMH and Ni-DTMH,while Ag atoms in Ag-DTMH exhibited three-and five-coordinated geometries with the tuning of specially selected imidazole ligands.Thus-obtained clusters can serve as powerful bifunctional catalysts for both sulfide oxidation and C-C bond construction.Remarkably,Ag-DTMH dem on st rated excellent heteroge ne ous bifunctional catalytic properties in the selective oxidati on of sulfides and construction of C-C bond(yields up to 99%),which enable successful recycling for three cycles with remained catalytic activities and structure stability.The newly designed decavanadate-based transition metal hybrids with bifunctional property hold high promise in the practical applications like continuous catalysis or flow bed reactions.

关键词： Polyoxometalates Crystal engineering Bifunctional catalysts Oxidation of sulfides Heterogeneous catalysis

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分子动力学模拟在分散剂/表面活性剂在煤颗粒表面吸附机理方面的研究进展

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燃料化学学报（中英文） 2024年第3期52卷 452-460页

作者：吕冬梅吴慧君陈健朋聂云昊边国琴李静龚树文聊城大学化学化工学院山东聊城252000

本研究从力场、几何优化、牛顿运动方程、周期性边界条件、系宗、控温控压方法、步长步数等方面简述了分子动力学模拟的基本原理。目前,煤大分子的构建方法有三种:经典模型、自主构建模型和含氧官能团修饰的石墨烯层模型。分子动力学模... 详细信息

本研究从力场、几何优化、牛顿运动方程、周期性边界条件、系宗、控温控压方法、步长步数等方面简述了分子动力学模拟的基本原理。目前,煤大分子的构建方法有三种:经典模型、自主构建模型和含氧官能团修饰的石墨烯层模型。分子动力学模拟中,吸附构型的图像信息可以直接观察分散剂/表面活性剂在煤颗粒表面的吸附情况及吸附历程,而密度分布曲线、均方根位移、吸附能等定量结果可以揭示分散剂/表面活性剂的吸附机理。分子动力学模拟与实验方法相结合可以从微观和宏观两个角度揭示分散剂/表面活性剂在煤颗粒表面吸附模式,将为分散剂和浮选剂的开发和应用提供重要的理论支撑。

关键词：分子动力学模拟分散剂表面活性剂煤颗粒吸附机理

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急性髓细胞性白血病患者血小板输注效果的影响因素分析

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中国医药导报 2024年第8期21卷 123-126页

作者：都新萍宫淑文杨青山东省烟台市滨州医学院烟台附属医院血液内科山东烟台264100 山东省烟台市滨州医学院烟台附属医院耳鼻喉科山东烟台264100

目的探索急性髓细胞性白血病(AML)患者血小板输注效果的影响因素。方法选取2021年12月至2022年12月于滨州医学院烟台附属医院进行血小板输注治疗的120例急性髓细胞性白血病患者为研究对象,其中输注无效组52例,输注有效组68例。通过统... 详细信息

目的探索急性髓细胞性白血病(AML)患者血小板输注效果的影响因素。方法选取2021年12月至2022年12月于滨州医学院烟台附属医院进行血小板输注治疗的120例急性髓细胞性白血病患者为研究对象,其中输注无效组52例,输注有效组68例。通过统计学软件SPSS 23.0软件分析两组患者的一般性资料,并分析影响因素。结果单因素分析结果显示,不同年龄、脾脏、活动性出血、血小板抗体、合并感染、输注次数及输注前后发热情况的AML患者血小板输注效果比较,差异有统计学意义(P<0.05)。多因素分析结果显示,年龄[18~<60岁组(OR=6.324,95%CI:1.1953~20.473,≥60岁组(OR=0.121,95%CI:0.019~0.757)]、脾脏(OR=2.850,95%CI:1.063~7.638)、合并感染(OR=9.994,95%CI:3.109~32.130)及输血次数(OR=5.053,95%CI:1.502~17.000)是影响AML患者血小板输注效果的相关因素(P<0.05)。结论年龄、脾脏、合并感染及输血次数是影响AML患者血小板输注效果的危险因素,可针对具有相关临床特征的患者采取有针对性的预防措施,为急性髓系白血病患者提供更好的血小板输注效果。

关键词：急性髓细胞性白血病血小板输注因素分析疗效

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Deep learning based wavefront sensor for complex wavefront detection in adaptive optical microscopes

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Frontiers of Information Technology & Electronic Engineering 2021年第10期22卷 1277-1288页

作者： shuwen HU Lejia HU Wei gong Zhenghan LI Ke SI Department of Neurology of the First Affiliated Hospital State Key Laboratory of Modern Optical InstrumentationZhejiang University School of MedicineHangzhou 310009China College of Optical Science and Engineering Zhejiang UniversityHangzhou 310027China Research Units for Emotion and Emotion Disorders Chinese Academy of Medical SciencesMOE Frontier Science Center for Brain Research and Brain-Machine IntegrationSchool of Brain Science and Brain MedicineZhejiang UniversityHangzhou 310058China

The Shack-Hartmann wavefront sensor(SHWS)is an essential tool for wavefront sensing in adaptive optical microscopes.However,the distorted spots induced by the complex wavefront challenge its detection performance.Here,we propose a deep learning based wavefront detection method which combines point spread function image based Zernike coefficient estimation and wavefront stitching.Rather than using the centroid displacements of each micro-lens,this method first estimates the Zernike coefficients of local wavefront distribution over each micro-lens and then stitches the local wavefronts for reconstruction.The proposed method can offer low root mean square wavefront errors and high accuracy for complex wavefront detection,and has potential to be applied in adaptive optical microscopes.

关键词： Adaptive optics Wavefront detection Deep learning Zernike coefficients Microscopy

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Constructal optimization of cylindrical heat sources with forced convection based on entransy dissipation rate minimization

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Science China(Technological Sciences) 2016年第4期59卷 631-639页

作者： gong shuwen CHEN LinGen XIE ZhiHui FENG HuiJun SUN FengRui Institute of Thermal Science and Power Engineering Naval University of Engineering Military Key Laboratory for Naval Ship Power Engineering Naval University of Engineering College of Power Engineering Naval University of Engineering

Based on constructal theory and entransy theory,the optimal designs of constant-and variable-cross-sectional cylindrical heat sources are carried out by taking dimensionless equivalent resistance minimization as optimization objective.The effects of the cylindrical height,the cylindrical shape and the ratio of thermal conductivity of the fin to that of the heat source are analyzed.The results show that when the volume of the heat source is fixed,there exists an optimal ratio of the center-to-centre distance of the fin and the heat source to the cylinder radius which leads to the minimum dimensionless equivalent thermal resistance.With the increase in the height of the cylindrical heat source and the ratio of thermal conductivity,the minimum dimensionless equivalent thermal resistance decreases gradually.For the heat source model with inverted variable-cross-sectional cylinder,there exist an optimal ratio of the center-to-centre distance of the fin and the heat source to the cylinder radius and an optimal radius ratio of the smaller and bigger circles of the cylindrical fin which lead to a double minimum dimensionless equivalent thermal resistance.Therefore,the heat transfer performance of the cylindrical heat source is improved by adopting the cylindrical model with variable-cross-section.The optimal constructs of the cylindrical heat source based on the minimizations of dimensionless maximum thermal resistance and dimensionless equivalent thermal resistance are different.When the thermal security is ensured,the optimal construct of the cylindrical heat source based on minimum equivalent thermal resistance can provide a new alternative scheme for the practical design of heat source.The results obtained herein enrich the work of constructal theory and entransy theory in the optimal design field of the heat sources,and they can provide some guidelines for the designs of practical heat source systems.

关键词：热源模型构形优化圆柱形最小化强制对流基础耗散率等效电阻

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Simplifying the detection of optical distortions by machine learning

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Journal of Innovative Optical Health Sciences 2020年第3期3卷 61-69页

作者： shuwen Hu Lejia Hu Biwei Zhang Wei gong Ke Si State Key Laboratory of Modern Optical Instrumentation Department of Neurobiology of the First Affiliated Hospital Zhejiang University School of Medicine Hangzhou 310027 P.R.China College of Optical Science and Engineering Zhejiang University Hangzhou 310027 P.R.China Center for Neuroscience Department of Neurobiology NHC and CAMS Key Laboratory of Medical Neurobiology Zhejiang University School of Medicine Hangzhou 310058 P.R.China

Adaptive optics has been widely used in biological science to recover high-resolution optical image deep into the tissue,where optical distortion detection with high speed and accuracy is strongly required.Here,we introduce convolutional neural networks,one of the most popular machine learning models,into Shack-Hartmann wavefront sensor(SHWS)to simplify optical distortion detection processes.Without image segmentation or centroid positioning algorithm,the trained network could estimate up to 36th Zernike mode coefficients directly from a full SHWS image within 1.227ms on a personal computer,and achieves prediction accuracy up to 97.4%.The simulation results show that the average root mean squared error in phase residuals of our method is 75.64%lower than that with the modal-based SHWS method.With the high detection accuracy and simplified detection processes,this work has the potential to be applied in wavefront sensor-based adaptive optics for in vivo deep tissue imaging.

关键词： Machine learning adaptive optics wavefront sensor

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Ball-milling Synthesis of Tetrahydroquinolines via 'One-pot' Three-component Diels-Alder Reaction Catalyzed by Phosphotungstic Acid

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Chemical Research in Chinese Universities 2020年第5期36卷 835-842页

作者： WANG Zeyou SHEN Guodong HUANG Xianqiang gong shuwen YANG Bingchuan SUN Zhenzhen ZHANG Zuhao LIU Wanxing School of Chemistry and Chemical Engineering Liaocheng UniversityLiaocheng 252000P.R.China Department of Chemistry Liaocheng Chemical Institute of Industrial ScienceLiaocheng 252000P.R.China

We reported an economic and practical ball-milling method for the synthesis of tetrahvdroquinoline derivatives via a wone-pot"three-component Diels-Alder reaction of anilines,aldehydes and alkenes catalyzed by phos-photungstic acid at room temperature.For this reaction,a simple 'one-pot'ball-milling operation was conducted,readily available starting materials were employed,'one-pot'conditions were applied,and the most important was to use inexpensive and environmentally friendly catalyst phosphotungstic acid.Various tetrahvdroquinolines,which might be potentially applicable in the pharmaceutical and biochemical areas,were conveniently synthesized in moderate to excellent yields.

关键词： Ball-milling Diels-Alder reaction Phosphotungstic acid Tetraliydroquinoline

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普洱熟茶对D-半乳糖衰老模型小鼠肠道菌群的影响

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食品科学 2022年第7期43卷 120-127页

作者：雷舒雯侯艳陈德洪龚加顺云南农业大学食品科学技术学院云南昆明650201 云南农业大学茶学院云南昆明650201 云南农业大学动物医学院云南昆明650201

以D-半乳糖(D-galactose,D-gal)皮下注射建立小鼠衰老模型,探究普洱熟茶对衰老小鼠抗氧化酶活力、小肠形态结构、肠道菌群多样性及肠道微生物结构变化等的影响。本实验将C57/BL6小鼠随机分为对照组、衰老组和普洱熟茶组,18周后,对小鼠... 详细信息

以D-半乳糖(D-galactose,D-gal)皮下注射建立小鼠衰老模型,探究普洱熟茶对衰老小鼠抗氧化酶活力、小肠形态结构、肠道菌群多样性及肠道微生物结构变化等的影响。本实验将C57/BL6小鼠随机分为对照组、衰老组和普洱熟茶组,18周后,对小鼠超氧化物歧化酶(superoxide dismutase,SOD)活力、谷胱甘肽过氧化物酶(glutathione peroxidase,GSH-Px)活力、丙二醛(malondialdehyde,MDA)含量、小肠组织病理和肠道菌群结构(16S rDNA高通量测序)变化进行检测分析。结果发现,D-gal致衰老小鼠SOD和GSH-Px活力显著降低,MDA含量显著升高(P<0.05);普洱熟茶显著提高衰老小鼠体内SOD和GSH-Px活力,显著降低MDA含量(P<0.05);在苏木素-伊红染色实验中,与对照组相比,衰老组小鼠绒毛长度、隐窝深度和肌层厚度显著降低(P<0.05);与衰老组相比,普洱熟茶组小鼠绒毛长度、隐窝深度和肌层厚度显著升高(P<0.05);利用高通量测序技术发现普洱熟茶干预改善了衰老小鼠肠道菌群结构,具体表现为拟杆菌门与厚壁杆菌门数量比值显著升高(P<0.05),乳杆菌科和乳杆菌属相对丰度显著降低(P<0.05),瘤胃菌科相对丰度显著升高(P<0.05)。普洱熟茶在正常的3倍高剂量条件下可改善衰老所致的肠道菌群结构失衡现象,有助于延缓衰老。

关键词：普洱熟茶 D-半乳糖肠道菌群菌群分析

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Investigation of GaN-based light-emitting diodes using a p-GaN/i-InGaN short-period superlattice structure as last quantum barrier

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Science China(Technological Sciences) 2013年第1期56卷 98-102页

作者： LIU XiaoPing FAN GuangHan ZHENG shuwen gong ChangChun LU TaiPing ZHANG YunYan XU YiQin ZHANG Tao Institute of Opto-electronic Materials and Technology South China Normal University

In this work,GaN-based light-emitting diodes(LEDs) with a p-GaN/i-InGaN short-period superlattice(SPSL) structure,p-GaN and undoped GaN last quantum barrier(LQB) have been numerically investigated by using the APSYS simulation software.It has been found that the efficiency droop is significantly improved when the undoped GaN LQB in a typical blue LED is replaced by a p-GaN/i-InGaN SPSL structure.According to the simulation analysis,using the p-GaN/i-InGaN SPSL structure as LQB is beneficial to increasing the hole injection efficiency and decreasing the electron current leakage.Therefore,the radiative recombination and optical power are enhanced.

关键词：超晶格结构发光二极管量子势垒 GaN 短周期蓝色LED 仿真软件数值研究

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ANXA2 Facilitates Enterovirus 71 Infection by Interacting with 3D Polymerase and PI4KB to Assist the Assembly of Replication Organelles

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Virologica Sinica 2021年第6期36卷 1387-1399页

作者： Qiuhan Zhang Siliang Li Ping Lei Zixian Li Feifei Chen Qi Chen Yulu Wang Jiami gong Qi Tang Xinjin Liu Ke Lan shuwen Wu State Key Laboratory of Virology College of Life SciencesWuhan UniversityWuhan430072China Medical Research Institute Wuhan UniversityWuhan430072China Frontier Science Center for Immunology and Metabolism Wuhan UniversityWuhan430072China

Similar to that of other enteroviruses, the replication of enterovirus 71(EV71) occurs on rearranged membranous structures called replication organelles(ROs). Phosphatidylinositol 4-kinase Ⅲ(PI4KB), which is required by enteroviruses for RO formation, yields phosphatidylinositol-4-phosphate(PI4P) on ROs. PI4P then binds and induces conformational changes in the RNA-dependent RNA polymerase(Rd Rp) to modulate Rd Rp activity. Here, we targeted 3D polymerase, the core enzyme of EV71 ROs, and found that the host factor Annexin A2(ANXA2) can interact with 3 D polymerase and promote the replication of EV71. Then, an experiment showed that the annexin domain of ANXA2, which possesses membranebinding capacity, mediates the interaction of ANXA2 with EV71 3 D polymerase. Further research showed that ANXA2 is localized on ROs and interacts with PI4KB. Overexpression of ANXA2 stimulated the formation of PI4P, and the level of PI4P was decreased in ANXA2-knockout cells. Furthermore, ANXA2, PI4KB, and 3D were shown to be localized to the viral RNA replication site, where they form a higher-order protein complex, and the presence of ANXA2 promoted the PI4 KB-3D interaction. Altogether, our data provide new insight into the role of ANXA2 in facilitating formation of the EV71 RNA replication complex.

关键词： Enterovirus 71(EV71) Annexin A2(ANXA2) 3D polymerase Phosphatidylinositol 4-kinaseⅢ(PI4KB)

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