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Nitric oxide assists nitrogen reduction reaction on 2D MBene: A theoretical study

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Chinese Chemical Letters 2024年第5期35卷 428-433页

作者： Chaozheng He Jia Wang Ling Fu wei wei Henan Engineering Center of New Energy Battery Materials College of Chemistry and Chemical EngineeringShangqiu Normal UniversityShangqiu 476000China School of Chemistry and Chemical Engineering Shandong Provincial Key Laboratory/Collaborative Innovation Center of Chemical Energy Storage&Novel Cell TechnologyLiaocheng UniversityLiaocheng 252059China Institute of Environment and Energy Catalysis Shaanxi Key Laboratory of Optoelectronic Functional Materials and DevicesSchool of Materials Science and Chemical EngineeringXi’an Technological UniversityXi’an 710021China College of Resources and Environmental Engineering Tianshui Normal UniversityTianshui 741001China

Electrocatalytic synthesis of ammonia as an environment-friendly and sustainable development method has received widespread attention in recent ***-dimensional(2D)materials are a promising catalyst for ammonia synthesis due to their large surface *** this work,we have constructed a series of 2D metal borides(MBenes)with transition metal(TM)defects(TMd-MBenes)and comprehensively calculated the reactivity of electrocatalytic synthesis of ammonia-based on density functional *** results have demonstrated that the TMd-MBenes can effectively activate nitrogen oxide(NO)and nitrogen(N2)molecules *** interesting,the co-chemisorption of O atoms,dissociated from NO,can facilitate the spilled of the inert N2 molecules into single N atoms,which can further hydrogenate into ammonia easily with an ultralow limiting potential of 0.59 V on *** research has not only provided clues for catalyst design for experimental study but also paved the way for the industrial application of electrocatalytic ammonia synthesis.

关键词： 2D mbenes Nitrogen electro-reduction DFT N_(2)activation Ammonia synthesis

Opportunities for production and property research of neutron-rich nuclei around N=126 at HIAF

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Nuclear Science and Techniques 2024年第6期35卷 101-113页

作者： Shao-Bo Ma Li-Na Sheng Xue-Heng Zhang Shi-Tao Wang Kai-Long Wang Chun-Wang Ma Hool-Jin Ong Zhi-Yu Sun Shu-Wen Tang Yu-Hong Yu Xin-Tong Du Xiao-bao wei Institute of Modern Physics Chinese Academy of SciencesLanzhou 730000China Advanced Energy Science and Technology Guangdong Laboratory Huizhou 516000China university of Chinese Academy of Sciences Beijing 100049China College of Physics Henan Normal UniversityXinxiang 453007China Institute of Nuclear Science and Technology Henan Academy of ScienceZhengzhou 450046China Joint-department for Nuclear Physics Lanzhou University and Institute of Modern PhysicsLanzhou 730000China Research Center for Nuclear Physics Osaka UniversityOsaka 567-0047Japan RIKEN Nishina Center Saitama 351-0198Japan Northwest normal university Lanzhou 730070China

The study of nuclide production and its properties in the N=126 neutron-rich region is prevalent in nuclear physics and astrophysics *** upcoming High-energy FRagment Separator(HFRS)at the High-Intensity heavy-ion Accelerator Facility(HIAF),an in-flight separator at relativistic energies,is characterized by high beam intensity,large ion-optical acceptance,high magnetic rigidity,and high momentum resolution *** provides an opportunity to study the production and properties of neutron-rich nuclei around N=*** this paper,an experimental scheme is proposed to produce neutron-rich nuclei around N=126 and simultaneously measure their mass and lifetime based on the HFRS separator;the feasibility of this scheme is evaluated through *** results show that under the high-resolution optical mode,many new neutron-rich nuclei approaching the r-process abundance peak around A=195 can be produced for the first time,and many nuclei with unknown masses and lifetimes can be produced with high *** the time-of-flight corrected by the measured dispersive position and energy loss information,the cocktails produced from 208 Pb fragmentation can be unambiguously ***,the masses of some neutron-rich nuclei near N=126 can be measured with high precision using the time-of-flight magnetic rigidity *** indicates that the HIAF-HFRS facility has the potential for the production and property research of neutron-rich nuclei around N=126,which is of great significance for expanding the chart of nuclides,developing nuclear theories,and understanding the origin of heavy elements in the universe.

关键词： HFRS Fragmentation Neutron-rich nuclei around N=126 Mass measurement Lifetime

ONO-1078 reduces NMDA-induced brain injury and vascular cell adhesion molecule-1 expression in rats

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Acta Pharmacologica Sinica 2005年第4期26卷 435-440页

作者： Li-hui ZHANG~(2,3) Er-qing wei~(2,4) 2 department of Pharmacology,School of Medicine,zhejiang university,hangzhou 310031 3 Medical School,hangzhou normal university,hangzhou 310018,china departmentofPharmacology SchoolofMedicineZhejiangUniversityHangzhou310031China

Aim:To determine whether ONO-1078 （pranlukast）,a potent cysteinyl leukotrienereceptor 1 （CysLTI） antagonist,has an effect on N-methyl-D-aspartate （NMDA）-induced brain injury and vascular cell adhesion molecule-1 （VCAM-1） expres-sion in ***:Brain injury was induced by direct microinjection of NMDA（0.3 μmol in 1 μL of sterile 0.1 mol/L PBS,pH 7.4） into the cerebral *** volume （area）,brain edema and neuron density were assessed by an imageanalyzer and the expression of VCAM-1 in the cortex was detected by Westernblot 24 h after NMDA ***-1078 （0.03,0.1,or 0.3 mg/kg） andedaravone （MCI-186,10 mg/kg）,a neuroprotective agent,were ip injected 30rain before and after NMDA ***:NMDA microinjection producedwell-defined focal lesions （Figure 1） dose- and ***-1078（0.1,0.3 mg/kg） and edaravone （10 mg/kg） decreased the total lesion volume,lesion area and brain edema induced by ***,ONO-1078 （0.1,0.3mg/kg） significantly inhibited the enhanced expression of VCAM-1 in the injuredcortices,but edaravone did not have this ***:CysLT1receptorantagonist ONO-1078 at tenufftes NMDA-induced brain damage in rats,and thismight relate to the attenuation of NMDA receptor-dependent neurotoxicity andthe inhibition of the upregulation of VCAM-1 expression.

关键词： leukotriene antagonists pranlukast N-methylaspartate vascular cell adhesion molecule-1 neurotoxicity brain injuries

Synthesis, catalytic and biological activity of novel dinuclear copper complex with Schiff base

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Science china Chemistry 2006年第3期49卷 225-229页

作者： wei Danyi1,2, LI Ning1, LU Gui1 & YAO Kemin1 1. department of Chemistry, zhejiang university, hangzhou 310027, china 2. Institute of Inorganic Chemistry, Ningbo university, Ningbo 315211, china 1. department of Chemistry Zhejiang University Hangzhou 310027 China 2. Institute of Inorganic Chemistry Ningbo University Ningbo 315211 China

A novel dinuclear copper complex with tetraglycol aldehyde-phenylalanineSchiff base has been synthesized. It was characterized and formulated as [Cu_2L(NO_3)]NO_3 byelemental analysis, magnetic susceptibility, TG-DTA, IR, EPR and ~1H NMR spectra. The obtainedcomplex can be used as a good catalyst for the polymerization of methyl methacrylate (MMA). Theoptimum polymerization conditions are: MMA/catalyst = 500 (molar ratio); [catalyst] =7.5x10^(-3)mol·L^(-1); dioxane as solvent; 80℃; 6 h. Polymethyl methacrylate (PMMA) with 80%conversion, 7.2x10^5 viscosity-average molecular weight and 60.5% syndiotacticity was obtained. Thiscomplex has also been shown to play an important role in scavenging O_2^-.

关键词： novel copper complex, Schiff base, catalytic activity, scavenging effect of O-·2.

A NEIGHBORHOOD UNION CONDITION FOR PANCYCLIC GRAPHS

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Systems Science and Mathematical Sciences 1998年第4期11卷 289-298页

作者： LI Xiangwen(department of mathematics, Huazhong normal university, Wuhan 430070, china)wei Bing(Institute of Systems Science, Academia Sinica, Beijing 100080, china)

Let C be a 2-connected graph on > 2 31 venices. G is called pancyclic if itcontains a cycle of length I for every I such that 3 l n. In this paper we shall prove thatif IN(u) U N(v) Z (2n - 3)/3 for any nonadjacent pa... 详细信息

关键词： Neighborhood union cycle pancyclic graph

Hydrogen Storage Properties of Ti_(1.2)Fe+xCa Hydrogen Storage Alloys

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Rare Metals 2001年第4期20卷 265-269页

作者： wei Wang, Changpin Chen, Haiou Xu, Hon gbo Li, Qidong Wang department Materiak Science and Engineering, zhejiang university, Hangvhou 310027. china zhejiang Univ Dept Mat Sci & Engn Hangzhou 310027 Peoples R China

The hydrogen storage properties of Ti1.2Fe+xCa (x=1%, 3% and 5% in mass fraction) alloys was investigated. Results stow that the modified alloys can be activated without any thermal treatment at room temperature due to the addition of Ca and excess Ti in (lie alloys. Hydrogen storage properties of these modified alloys vary with Ca amount and reaction temperature. In addition, the influence mechanism of the addition of Ca and excessive Ti on the activation behavior and hydrogen storage capacity of the alloys was discussed.

关键词： TiFe Ca hydrogen storage alloy hydrogen storage property

Parallel Subtraction using LCLV and Lenslet Array in Optical Neural Networks

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Chinese Journal of Lasers 1997年第2期B6卷 169-176页

作者： YANG Jianwen WANG Bin TIAN weijian bao Zhengkang LU Zukang(State Key Laboratory of Modern Optical Instrumentation, Optical Engineering(department, zhejiang university, hangzhou, 310027)(Applied Physics Research Lab, zhejiang university of Technology, zhejiang Univ Hangzhou China

Basing on the method of wavelength and beam deviation encoding for implementing a bipolar optical neural networks, the subtraction between the positive and negative stimulation of a neuron can be converted to the addition by the normal and in verse states of a liquid crystal light value (LCLV). The summation can be performed by using a lenslet to focus the two light spots which represent the two stimulations. The pre liminary experimental results demonstrate the feasibility of the presental method.

关键词： liquid crystal light valve lenslet array parallel subtraction neural networks

Extracellular vesicles derived from mesenchymal stem cells mediate extracellular matrix remodeling in osteoarthritis through the transport of microRNA-29a

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World Journal of Stem Cells 2024年第2期16卷 191-206页

作者： Fan Yang Wan-Qi Xiong Chen-Zhi Li Ming-Jian Wu Xiu-Zhi Zhang Chun-Xiao Ran Zhen-Hao Li Yan Cui bao-Yi Liu De-wei Zhao department of Orthopedics Affiliated Zhongshan Hospital of Dalian UniversityDalian 116001Liaoning ProvinceChina

BACKGROUND Knee osteoarthritis(KOA)is a common orthopedic condition with an uncertain etiology,possibly involving genetics and *** like changes in chondrocyte microenvironment,oxidative stress,inflammation,and immune responses affect KOA ***-stage treatment options primarily target symptom *** stem cells(MSCs)show promise for treatment,despite *** research highlights microRNAs(miRNAs)within MSC-released extracellular vesicles that can potentially promote cartilage regeneration and hinder KOA *** suggests exosomes(Exos)as a promising avenue for future *** these findings emphasize the need for effective KOA progression management,further safety and efficacy validation for Exos is *** To explore miR-29a’s role in KOA,we’ll create miR-29a-loaded vesicles,testing for early treatment in rat *** Extraction of bone marrow MSC-derived extracellular vesicles,preparation of engineered vesicles loaded with miR-29a using ultrasonication,and identification using quantitative reverse transcription polymerase chain reaction;after establi-shing a rat model of KOA,rats were randomly divided into three groups:Blank control group injected with saline,normal extracellular vesicle group injected with normal extracellular vesicle suspension,and engineered extrace-llular vesicle group injected with engineered extracellular vesicle *** three groups evaluation,histological detection,and immunohistochemical detection to compare and evaluate the progress of various forms of *** General behavioral observation results showed that the extracellular vesicle group and engineered extracellular vesicle group had better performance in all four indicators of pain,gait,joint mobility,and swelling compared to the blank control ***,the engineered extracellular vesicle group had better pain relief at 4 wk and better knee joint mobility at 8 wk compared to the nor

关键词： Exosomes Osteoarthritis Mesenchymal stem cells MicroRNA-29a Intra-articular injection

Coupled Transfer of Water and Heat in Red Soil: Experiment and Numerical Modelling

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Pedosphere 2001年第2期11卷 123-130页

作者： HANXIAOFEI LUJUN 等 departmentofGeography EastChianNormalUniversityShanghai200062（China） departmentofResourceScience ZhejiangUniversityHangzhou310029（China）

Coupled transfer of soil water and heat in closed columns of homogeneous red soil was studied under laboratory conditions. A coupled model was constructed using soil physical theory, empirical equations and experimental data to predict the coupled transfer. The results show that transport of soil water was affected by temperature gradient, and the largest net water transport was found in the soil column with initial water content of 0.148 m3 m-3. At the same time, temperature changes with the transport of soil water was in a nonlinear shape as heat parameters were function of water content, and the changes of temperature were positively correlated with the net amount of water transported. Numerical modelling results show that the predicted values of temperature distribution were close to the observed values, while the predicted values of water content exhibited limited deviation at both ends of the soil column due to the slight temperature changes at both ends. It was indicated that the model proposed here was applicable.

关键词： coupled transfer of water and heat numerical modelling red soil