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Expression of Dickkopf-related Protein 1 in Patients with Temporomandibular Osteoarthritis after Treatment with Hyaluronic Acid

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Current Medical Science 2020年第3期40卷 574-579页

作者： Sheng-jun jiang Zhong-zhi JIN You-jian PENG Department of Stomatology Renmin Hospital of Wuhan UniversityWuhan430060China

We previously reported that the increased expression of Dickkopf-related protein 1(DKK1)is positively related to vascular endothelial growth factor in the synovial fluid from patients with temporomandibular joint disorders(TMDs).DKK1 is involved in angiogenic activities in the TMD synovium in vitro,but the expression of DKK1 after treatment of TMD-osteoarthritis(TMD-OA)with hyaluronic acid(HA)remains *** this study,we assessed the expression of DKK1 in the synovial fluid of TMD-OA patients before and after treatment with HA via enzyme-linked immunosorbent *** also investigated the role of DKK1 in TMD-OA via immunohistochemical *** relationship between the expression of DKK1 and the clinicopathological characteristics was determined by Pearson *** results showed that the expression of DKK1 was significantly decreased after treatment with *** analyses indicated that the expression of DKK1 in the TMD-OA samples was closely correlated with mouth opening and *** findings suggest that DKK1 could play an important role in the pathogenesis and treatment of *** of the pain by HA treatment may be correlated with the decreased expression of DKK1.

关键词： Dickkopf-related protein 1 temporomandibular joint disorders hyaluronic acid synovial fluid

Monte Carlo Hamiltonian: Linear Potentials

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Communications in Theoretical Physics 2002年第5期38卷 561-565页

作者： LUO Xiang-Qian LIU Jin-jiang HUANG Chun-Qing jiang jun-Qin Helmut KROGER Department of Physics Zhongshan University Guangzhou 510275 China Department of Physics Zhongshan University Guangzhou 510275 China Department of Physics Zhongshan University Guangzhou 510275 China Department of Physics Zhongshan University Guangzhou 510275 China 2Département de Physique Université Laval Québec Québec G1K 7P4 Canada

We further study the validity of the Monte Carlo Hamiltonian method. The advantage of the method,in comparison with the standard Monte Carlo Lagrangian approach, is its capability to study the excited states. Weconsider two quantum mechanical models: a symmetric one V(x) = |x|/2; and an asymmetric one V(x) = ∞, forx ＜ 0 and V(x) = x, for x ≥ 0. The results for the spectrum, wave functions and thermodynamical observables are inagreement with the analytical or Runge-Kutta calculations.

关键词： Monte Carlo method, quantum mechanics, computational physics

Effect of chip rate on the ranging accuracy in a regenerative pseudo-noise ranging system

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Journal of Zhejiang University-Science C(Computers and Electronics) 2011年第2期12卷 132-139页

作者： Jian-wen jiang Wei-jun YANG Chao-jie ZHANG Xiao-jun JIN Zhong-he JIN Department of Information Science and Electronic Engineering Zhejiang University Hangzhou 310027 China

The ranging accuracy of a pseudo-noise ranging system is mainly decided by range jitter and time delay discrimination. Many factors can affect the ranging accuracy, one of which is the chip rate. In digital signal processing, the time delay discrimination and autocorrelation function of sampled ranging sequences of different chip rates are very different. An approximation simulation model is established according to an in-phase quadrature (I/Q) correlator which is used to evaluate the time delay. Simulation results of the range jitter and time delay discrimination show that the chip rate which provides a non-integer sample-to-chip rate ratio can achieve a higher ranging accuracy, and some test results validate the simulation model. In some design missions, the simulation results may help to select an optimum sample-to-chip rate ratio to satisfy the design requirement on the ranging accuracy.

关键词： Ranging accuracy Range jitter Time delay discrimination Sample-to-chip rate ratio Integration time Autocorrelation function Fractional chip period delay

A unique organic-inorganic hybrid Fe^(Ⅲ)–Pr^(Ⅲ)-included 2-germano-20-tungstate and its electrochemical biosensing properties

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Chinese Chemical Letters 2022年第5期33卷 2630-2634页

作者： Xiaoyi Liu Limin Cui jun jiang Fan Ji junwei Zhao College of Chemistry and Chemical Engineering Henan UniversityKaifeng 475004China

An organic-inorganic hybrid Fe^(Ⅲ)–Pr^(Ⅲ)-included 2-germano-20-tungstate[Pr(H_(2)O)_(8)]2 H_(2)[Fe_(4)(H_(2)O)_(4)(pca)_(4) Ge_(2)W_(20)O_(72)]•34H_(2)O(Hpca=2-pyridinecarboxylic acid)(1)was hydrothermally *** polyoxoanion comprises one tetra-Fe^(Ⅲ)incorporated[Fe_(4)(H_(2)O)_(4)(pca)_(4) Ge_(2)W_(20)O_(72)]^(8-)hybrid entity and two[Pr(H_(2)O)_(8)]^(3+)ornamental ***[Fe_(4)(H_(2)O)_(4)(pca)4 Ge_(2)W_(20)O_(72)]^(8-)2-germano-20-tungstate entity can be regarded as an infrequent S-type[Ge_(2)W_(20)O_(72)]^(16-)cluster pocketed by four[Fe(H_(2)O)(pca)]2+*** S-type[Ge_(2)W_(20)O_(72)]16-cluster could be imagined as condensation of two divacant Keggin[α-GeW _(10)O_(37)]^(10-)segments by sharing two *** is of interest is that carboxyl O and pyridine N atoms on pca ligands concurrently bind with Fe ^(3+)cations in a five-membered heterocyclic fashion to increase the stability of the whole ***,the electrochemical biosensing properties of 1 as the modified electrode material have been investigated for detecting norepinephrine(NPP),showing a low detection limit of 3.25μmol/*** work not only enriches structures of heterometallic german-otungstates(GTs),but also expands applications of polyoxometalates(POMs)in the electrochemical biosensing field.

关键词： Polyoxometalate Germanotungstate Heterometallic polyoxotungstate Electrochemistry Biosensing

Heat treatment effect on structural evolution and hydrogen sorption properties of Y_(0.5)La_(0.2)Mg_(0.3-x)Ni_(2) compound

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Rare Metals 2023年第6期42卷 1813-1820页

作者： Hao Shen Li-jun jiang Ping Li Hui-Ping Yuan Zhi-Nian Li jun-Xian Zhang National Engineering Research Center of Nonferrous Metals Materials and Products for New Energy GRINM Group Co.Ltd.Beijing100088China Institute for Advanced Materials and Technology University of Science and TechnologyBeijing100083China CNRS ICMPEUMR 7182Univ Paris Est CreteilThiais94320France GRIMAT Engineering Institute Co. Ltd.Beijing101407China

The effect of heat treatment on phase occurrence,crystal structures and hydrogen sorption properties of Y_(0.5)La_(0.2)Mg_(0.3-x)Ni_(2) compounds has been *** targeted compounds were synthesized through induction melting and processed heat treatment at 700 and 900℃,*** occurrence and structural properties were studied by X-ray powder diffraction(XRD).The global compositions and phase compositions have been determined by inductively coupled plasma-optical emission spectrometer(ICP-AES) and electron probe microanalysis(EPMA) respectively.

关键词： hydrogen treatment structural

Effect of coordination structure of aluminum on its activation from minerals and Oxisols during their acidification

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Pedosphere 2024年第5期34卷 916-928页

作者： Kewei LI Yangxiaoxiao SHI Jackson Nkoh NKOH jun jiang Renkou XU State Key Laboratory of Soil and Sustainable Agriculture Institute of Soil ScienceChinese Academy of SciencesNanjing 210008China University of Chinese Academy of Sciences Beijing 100049China

The types and contents of phyllosilicate minerals in soils play an important role in soil acidification,as soil acid buffering capacity varies with the composition of the phyllosilicate *** addition to aluminum-oxygen(Al-O)octahedrons,a certain number of Al-O tetrahedrons exist in phyllosilicate minerals due to the isomorphic substitution of silicon ion(Si4+)by aluminum ion(Al3+)in Si-O tetrahedrons of ***,the effect of the two coordination structures of Al on the release of Al during mineral acidification has not yet been ***,the differences in Al activation in phyllosilicate minerals and soils with different Al coordination structures were investigated through constant-p H experiments and27Al magic-angle spinning nuclear magnetic resonance(MAS-NMR)*** results of27Al MAS-NMR spectra showed that kaolinite contained Al-O octahedrons,phlogopite and illite contained Al-O tetrahedrons,and vermiculite composite contained both octahedral and tetrahedral *** p Hvermiculite composite>phlogopite>kaolinite,which was consistent with the orders of cation exchange capacity and content of tetrahedral Al of the *** to the rate constants,the Al release rates were in the order of phlogopite>illite>vermiculite composite>kaolinite at p H *** for phlogopite,the Al release rates in these minerals increased with decreasing suspension p ***,the Al release contents and rates were greater in phlogopite,illite,and vermiculite composite containing Al-O tetrahedrons than in kaolinite containing only Al-O *** Oxisols derived from basalt with different ages were selected for similar ***27Al MAS-NMR spectra of the Oxisols showed that the 0.01-million-year(Ma)Oxisol contained both octahedral and tetrahedral Al,while the 1.33-Ma Oxisol contained only Al-O *** contents of both exchan

关键词： Al-O octahedrons Al-O tetrahedrons aluminum release exchangeable Al phyllosilicate minerals soil acidification

Reconstruction Results about the Exponential Radon Transform

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Wuhan University Journal of Natural Sciences 2013年第1期18卷 25-28页

作者： jiang jun WANG Jinping Faculty of Science Ningbo University

In this paper, the properties of the exponential Radon transform and its dual are discussed. Furthermore, the analytical reconstruction formulas of exponential Radon transform with two different methods are developed.

关键词： exponential Radon transform dual transform re-construction formula Dirac function

Enhanced compactness and element distribution uniformity of Cu2ZnSnS4 thin film by increasing precursor S content

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Rare Metals 2020年第3期39卷 256-261页

作者： Hao Han Ji-Ning Wang Jing Mi Xiao-Peng Liu Li-jun jiang Department of Energy Material and Technology General Research Institute for Nonferrous MetalsBeijing100088China Beijing Engineering Research Center of Nonferrous Metal Products for New Energy Beijing100088China

Cu2ZnSnS4 thin films were prepared by cosputtering with Cu(or Cu2S),ZnS and SnS2 targets in this study.S amount in the precursor of Cu2ZnSnS4 thin film was verified by using Cu or Cu2S *** effect of S amount in the precursor on the microstructure and element distribution of Cu2ZnSnS4 thin film was *** was found that S content is sufficient in the precursor thin film using Cu2 S instead of Cu *** microstructure,composition homogeneity,and secondary phase formation of the Cu2ZnSnS4 thin film are seriously affected by S amount in the precursor thin ***,sufficient S can improve the crystallization and orientation of the precursor thin film and enhance the compactness as well as composition homogeneity of the Cu2ZnSnS4 thin film after ***,the secondary phase formation in Cu2ZnSnS4 thin film can be greatly inhibited by increasing S content in the precursor thin film.

关键词： Cu2ZnSnS4 Thin film S content Diffusion

Role of hydrogen in China's energy transition towards carbon neutrality target:IPAC analysis

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Advances in Climate Change Research 2023年第1期14卷 43-48页

作者： Pian-Pian XIANG Chen-Min HE Sha CHEN Wei-Yi jiang Jia LIU Ke-jun jiang College of Energy and Environment Beijing University of TechnologyBeijing 100124China Zhejian Carbon Neutral Innovation Institute Zhejiang University of TechnologyHangzhou 310014China Graduate School of International Studies Yonsei UniversitySeoul 03722South Korea Renm Consulting Co. Beijing 100038China Energy Research Institute Chinese Academy of Macro-Economic ResearchBeijing 100038China

China announced its intention to achieve carbon neutrality by 2060 in 2020,and there is an urgent need to understand the viability of emission pathways to reach this *** study presents the IPAC modelling team's scenario analysis on China's hydrogen utilisation as a key option for carbon neutrality *** contrast to other studies,this study examines the demand for hydrogen as a feedstock and process material in the industrial sector and as a source of energy in the transportation sector in relation to China's energy system *** process of manufacturing hydrogen from carbon-free power generation was also *** finding indicates that the demand for hydrogen could reach 52.4 Mt by 2050 and that the hydrogen will come from renewable power generation and nuclear energy,increasing the demand for electricity by 1884.8 TW *** are several regions in China with abundant renewable energy and low power generation costs,which will make the hydrogen-based industry competitive in these regions after 2035.

关键词： Scenario Hydrogen Carbon neutrality targets CO_(2)mitigation China