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Capillary Electrophoresis in the Presence of Fosfomycin

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Wuhan University Journal of Natural Sciences 2000年第2期5卷 210-214页

作者： XIE min jie, feng Yu qi , DA Shi lu College of Chemistry and Environmental Science, Wuhan University, Wuhan 430072, China Received date: 1999 09 29 Corresponding author Foundation item: Supported by the National Natural Science Foundation o Wuhan University College of Chemistry and Environmental Science Wuhan China (GRID:grid.49470.3e) (ISNI:***)

Fosfomycin, a sodium salt ofcis-(3-methyloxiranyl) phosphonic acid, was used as electrolyte in binary methanol-water media for capillary electrophoresis. The variety of electroosmotic flow with pH*, methanol concentration and ionic strength was investigated. The migration behavior of nine bases was examined under various conditions, and the separation of thymine, cytosine, 5-flurouracil, 4, 6-diamino-pyrimidine, purine was accomplished.

关键词： Key words fosfomycin electrophoresis electroomotic flow bases

Ru doping triggering reconstruction of cobalt phosphide for coupling glycerol electrooxidation with seawater electrolysis

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Journal of Energy Chemistry 2025年第1期100卷 317-326页

作者： Binglu Deng jie Shen Jinxing Lu Chuqiang Huang Zhuoyuan Chen feng Peng Yunpeng Liu School of Materials Science and Hydrogen Energy Foshan University School of Chemistry and Chemical Engineering Guangzhou University Guangdong Key Laboratory for Hydrogen Energy Technologies

Seawater electrolysis is a promising approach for sustainable energy without relying on precious ***,the large-scale seawater electrolysis is hindered by low catalytic efficiency and severe anode corrosion caused by the harmful *** contrast to the oxygen evolution reaction （OER）and chlorin ion oxidation reaction （ClOR）,glycerol oxidation reaction （GOR） is more thermodynamically and kinetically favorable ***,a Ru doping cobalt phosphide （Ru-CoP2） is proposed as a robust bifunctional electrocatalyst for seawater electrolysis and GOR,for the concurrent productions of hydrogen and value-added *** in situ and ex situ characterization analyses demonstrated that Ru doping featured in the dynamic reconstruction process from Ru-CoP2to Ru-CoOOH,accounting for the superior GOR *** coupling GOR with hydrogen evolution was realized by employing Ru-CoP2as both anode and cathode,requiring only a low voltage of 1.43 V at 100 mA cm-2,which was 250 m V lower than that in alkaline *** work guides the design of bifunctional electrocatalysts for energy-efficient seawater electrolysis coupled with biomass resource upcycling.

关键词： Glycerol electrooxidation Hydrogen evolution Ru doping Cobalt phosphide Bifunctional electrocatalysts

Production,characterization and application of a keratinase from Chryseobacterium L99 sp. nov.

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Production,characterization and application of a keratinase ...

Metal-organic frameworks with dinuclear metal centers for synergistically boosting CO2 photoreduction

2010年第四届全国微生物遗传学学术研讨会

作者： Long-Xian Lv,ming-Hao Sim,Yu-Dong Li,jie min,Wei-Hong feng,Yong-Quan Li~* Institute of Biochemistry,Zhejiang University,China

Keratins are important bioresources for apparels and feedstuffs,but recalcitrant to common ***,it is popular and essential to develop keratinolytic enzymes for environmental prevention and improvement of keratin produ...

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Science China Chemistry 2025年第01期 201-208页

作者： Hui-feng Wang Wen-jie Shi Yu-Xin Yang Bao-Xia Dong Tong-Bu Lu Di-Chang Zhong School of Chemistry and Chemical Engineering Yangzhou University Institute for New Energy Materials and Low Carbon Technologies School of Materials Science and Engineering Tianjin University of Technology

Dinuclear metal synergistic catalysis （DMSC） has been proved powerful in boosting CO2reduction,while this has not been achieved in heterogeneous catalysts with long-range order *** this study,we,by introduction of metal catalytic centers into an indium-based metal-organic framework （MOF）,obtained a series of isostructural In-MOFs,including three MOFs with mononuclear metal catalytic center （M-In）,three MOFs with dinuclear homometallic catalytic centers （MM-In）,and three MOFs with dinuclear heterometallic catalytic centers (MM’-In,M/M’=Co（II）,Ni（II）,Zn（II）).It was found that all these MOFs can serve as catalysts for photochemical CO2reduction to *** with M-In,the catalytic activities of MM-In were obviously enhanced,and that of MM’-In was further significantly *** example,the CO yield of Co Zn-In reaches a record value of 12,700μmol g-1h-1,which is 4.0,8.1,9.4,and 18.6-fold higher than that of Co Co-In,Zn Zn-In,Co-In,and Zn-In,***,the catalytic activities of Co Ni-In and Ni Zn-In also show different fold increase than those of corresponding dinuclear homometallic and mononuclear metallic *** results of control experiments and theoretical calculation reveal that the higher catalytic activities of MM-In over M-In can be ascribed to the DMSC effect,and the higher catalytic activity of MM’-In over MM-In can be ascribed to the strengthened DMSC *** work reveals the relationship between DMSC effect and bimetal centers in CO2reduction,which provides new insights into the DMSC and paves a new way to design highly active catalysts for photochemical CO2reduction.

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Observation of acoustic hybrid topological phases induced by the p-d orbital interactions

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 132-139页

作者： Xiao Xiang feng Gao Yu-Gui Peng Peng Wu Zong-Lin Li Xue-feng Zhu School of Physics and Innovation Institute Huazhong University of Science and Technology

In spinless systems,growing attention has recently been attracted to synthetic gauge fields,which redefine the fundamental crystal symmetries by utilizing the projective algebraic ***,synthetic gauge fields have been commonly investigated in single orbital systems,and explorations on hybrid orbitals remain elusive in ***,we report the experimental observation of hybrid topological phases induced by hybrid synthetic gauge flux,which is formed by the interaction between p and d orbitals embedded in acoustic *** breaking the translation symmetries of Lxand/or Ly,we unambiguously demonstrate the first-order M?bius edge states and higher-order corner *** work establishes a platform for seeking exotic topological phases induced by hybrid-orbitals interactions and initializing the framework of hybrid-orbitalsrelated topological *** applications can be anticipated in scenarios such as high-quality sensing and robust wave trapping due to the stepwise energy distribution of the hybrid topological phase.

关键词： topological insulator synthetic gauge field projective symmetry corner states

采用多参考组态相互作用方法研究AsN(X1Σ+)自由基的光谱常数与分子常数

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物理学报 2011年第12期60卷 139-145页

作者：王杰敏孙金锋洛阳师范学院物理与电子信息学院洛阳471022 河南师范大学物理与信息工程学院新乡453007

采用内收缩多参考组态相互作用方法和相关一致基对AsN(X1Σ+)自由基的势能曲线进行了研究.计算过程中对两原子分别采用不同基组,As原子为aug-cc-pV5Z基组,N原子为aug-cc-pV6Z基组.通过最小二乘法将势能曲线拟合成Murrell-Sorbie函数,并... 详细信息

采用内收缩多参考组态相互作用方法和相关一致基对AsN(X1Σ+)自由基的势能曲线进行了研究.计算过程中对两原子分别采用不同基组,As原子为aug-cc-pV5Z基组,N原子为aug-cc-pV6Z基组.通过最小二乘法将势能曲线拟合成Murrell-Sorbie函数,并进一步计算得到AsN(X1Σ+)自由基的光谱常数.光谱常数分别为De=4.97eV,Re=0.16259nm,ωe=1061.14cm-1,ωexe=5.4715cm-1,Be=0.53919cm-1和αe=0.003409cm-1.通过比较发现它们与实验值符合非常好.利用得到的解析势能函数,求解双原子分子核运动的径向Schrdinger方程,找到了J=0时该自由基存在的全部67个振动态.对于每一振动态,分别计算了振动能级、经典转折点、惯性转动常数和离心畸变常数.与实验结果比较后发现,计算结果达到了很高的计算精度.

关键词： AsN 势能曲线光谱常数分子常数

Nanocarrier-mediated siRNA delivery:a new approach for the treatment of traumatic brain injury-related Alzheimer's disease

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Neural Regeneration Research 2025年第9期20卷 2538-2555页

作者： jie Jin Huajing Zhang Qianying Lu Linqiang Tian Sanqiao Yao feng Lai Yangfan Liang Chuanchuan Liu Yujia Lu Sijia Tian Yanmei Zhao Wenjie Ren Institute of Disaster and Emergency Medicine Tianjin UniversityTianjinChina Key Laboratory for Disaster Medicine Technology TianjinChina Henan Medical Key Laboratory for Research of Trauma and Orthopedics The Third Affiliated Hospital of Xinxiang Medical UniversityXinxiangHenan ProvinceChina Clinical Medical Center of Tissue Engineering and Regeneration Xinxiang Medical UniversityXinxiangHenan ProvinceChina Institutes of Health Central Plain Xinxiang Medical UniversityXinxiangHenan ProvinceChina School of Public Health Xinxiang Medical UniversityXinxiangHenan ProvinceChina

Traumatic brain injury and Alzheimer's disease share pathological similarities,including neuronal loss,amyloid-βdeposition,tau hyperphosphorylation,blood-brain barrier dysfunction,neuroinflammation,and cognitive ***,traumatic brain injury can exacerbate Alzheimer's disease-like pathologies,potentially leading to the development of Alzheimer's *** offer a potential solution by facilitating the delive ry of small interfering RNAs across the blood-brain barrier for the targeted silencing of key pathological genes implicated in traumatic brain injury and Alzheimer's disease.U nlike traditional approaches to neuro regeneration,this is a molecula r-targeted strategy,thus avoiding non-specific drug *** review focuses on the use of nanocarrier systems for the efficient and precise delive ry of siRNAs,discussing the advantages,challenges,and future *** principle,siRNAs have the potential to target all genes and non-targetable protein s,holding significant promise for treating various *** the various therapeutic approaches currently available for neurological diseases,siRNA gene silencing can precisely"turn off"the expression of any gene at the genetic level,thus radically inhibiting disease progression;however,a significant challenge lies in delivering siRNAs across the blood-brain *** have received increasing attention as an innovative drug delive ry tool fo r the treatment of brain *** are considered a potential therapeutic strategy with the advantages of being able to cross the blood-brain barrier,targeted drug delivery,enhanced drug stability,and multifunctional *** use of nanoparticles to deliver specific modified siRNAs to the injured brain is gradually being recognized as a feasible and effective *** this strategy is still in the preclinical exploration stage,it is expected to achieve clinical translation in the future,creating a new field of molecular tar

关键词： blood-brain barrier cognitive dysfunction exosomes gene silencing immunotherapy inorganic nanomaterials liposome nanoparticles neuroinflammation polymer nanoparticles stem cells

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石墨烟雾粒径时空分布特性仿真研究

制导与引信 2016年第3期37卷 23-28页

作者：王凤杰陈慧敏冯星泰胡宗毅北京理工大学机电动态控制重点实验室北京100081

粒径分布是影响烟雾光学性能的重要因素之一,为获取烟雾粒径分布,基于拉格朗日随机游走模式,考虑风场、湍流、重力、浮力等作用,建立自由空间烟雾扩散模型。针对连续烟源,数值模拟石墨烟雾扩散过程,分析烟雾粒径在空间下风、跨风、垂直... 详细信息

粒径分布是影响烟雾光学性能的重要因素之一,为获取烟雾粒径分布,基于拉格朗日随机游走模式,考虑风场、湍流、重力、浮力等作用,建立自由空间烟雾扩散模型。针对连续烟源,数值模拟石墨烟雾扩散过程,分析烟雾粒径在空间下风、跨风、垂直地面方向和时间上的分布特性。仿真结果表明,在烟源释放烟雾阶段,石墨烟雾粒径空间分布特性为:沿垂直地面方向存在明显差异,沿下风方向和跨风方向基本保持不变;石墨烟雾粒径时间分布特性为:在沿下风方向划设的空间网格内基本保持不变,在沿跨风方向和垂直方向划设的空间网格内存在微小差异。仿真方法与仿真结果对烟雾的光学特性研究及激光抗烟雾干扰研究,具有重要的参考价值。

关键词：粒径分布时空分布特性烟雾扩散

Automatic segmentation of bladder in CT images

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2009年第2期10卷 239-246页

作者： feng SHI jie YANG Yue-min ZHU Institute of Image Processing and Pattern Recognition Shanghai Jiao Tong University Shanghai 200240 China CREATIS. LNSA of Lyon University of Lyon 1 Villeurbanne France

Segmentation of the bladder in computerized tomography(CT) images is an important step in radiation therapy planning of prostate cancer. We present a new segmentation scheme to automatically delineate the bladder contour in CT images with three major steps. First,we use the mean shift algorithm to obtain a clustered image containing the rough contour of the bladder,which is then extracted in the second step by applying a region-growing algorithm with the initial seed point selected from a line-by-line scanning process. The third step is to refine the bladder contour more accurately using the rolling-ball algorithm. These steps are then extended to segment the bladder volume in a slice-by-slice manner. The obtained results were compared to manual segmentation by radiation oncologists. The average values of sensitivity,specificity,positive predictive value,negative predictive value,and Hausdorff distance are 86.5%,96.3%,90.5%,96.5%,and 2.8 pixels,respectively. The results show that the bladder can be accurately segmented.

关键词： Image segmentation Computerized tomography (CT) Mean shift Bladder Rolling ball