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Defence Technology（防务技术） 2024年第1期31卷 27-40页

作者： Rui liu Danfeng Yang Kunyu Xiong Ying-Lei Wang Qi-long Yan Science and Technology on Combustion Internal Flow and Thermo-structure LaboratoryNorthwestern Polytechnical UniversityXi'an710072China Xi'an Modern Chemistry Research Institute Xi'an710065China

Boron has high mass and volume calorific values,but it is difficult to ignite and has low combustion efficiency.This literature review summarizes the strategies that are used to solve the above-mentioned problems,which include coatings of boron by using fluoride compounds,energetic composites,metal fuels,and metal oxides.Coating techniques include recrystallization,dual-solvent,phase transfer,electrospinning,etc.As one of the effective coating agents,the fluorine compounds can react with the oxide shell of boron powder.In comparison,the energetic composites can effectively improve the flame temperature of boron powder and enhance the evaporation efficiency of oxide film as a condensed product.Metals and metal oxides would react with boron powder to form metal borides with a lower ignition point,which could reduce its ignition temperature.

关键词： Boron powder coating Structure and morphology Condensed phase thermal reaction Ignition and combustion

An aqueous BiI_(3)-Zn battery with dual mechanisms of Zn^(2+)(de)intercalation and I^(-)/I_(2)redox

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Journal of Energy Chemistry 2024年第2期89卷 670-678,I0014页

作者： Qi Deng Fangzhong liu Xiongwei Wu Changzhu Li Weibin Zhou Bei long State Key Laboratory of Utilization of Woody Oil Resource Key Laboratory of National Forestry and Grassland Administration on Utilization Science for Southern Woody Oil ResourcesHunan Provincial Key Laboratory of Oils&Fats Molecular Structure and FunctionHunan Academy of ForestryChangsha 410004HunanChina School of Chemistry Xiangtan UniversityXiangtan 411105HunanChina School of Chemistry and Materials Science Hunan Agricultural UniversityChangsha 410128HunanChina

The development of aqueous battery with dual mechanisms is now arousing more and more interest.The dual mechanisms of Zn^(2+)(de)intercalation and I^(-)/I_(2)redox bring unexpected effects.Herein,differing from previous studies using Zn I_(2)additive,this work designs an aqueous Bi I_(3)-Zn battery with selfsupplied I^(-).Ex situ tests reveal the conversion of Bi I_(3)into Bi(discharge)and Bi OI(charge)at the 1st cycle and the dissolved I^(-)in electrolyte.The active I^(-)species enhances the specific capacity and discharge medium voltage of electrode as well as improves the generation of Zn dendrite and by-product.Furthermore,the porous hard carbon is introduced to enhance the electronic/ionic conductivity and adsorb iodine species,proven by experimental and theoretical studies.Accordingly,the well-designed Bi I_(3)-Zn battery delivers a high reversible capacity of 182 m A h g^(-1)at 0.2 A g^(-1),an excellent rate capability with 88 m A h g^(-1)at 10 A g^(-1),and an impressive cyclability with 63%capacity retention over 20 K cycles at 10 A g^(-1).An excellent electrochemical performance is obtained even at a high mass loading of 6 mg cm^(-2).Moreover,a flexible quasi-solid-state Bi I_(3)-Zn battery exhibits satisfactory battery performances.This work provides a new idea for designing high-performance aqueous battery with dual mechanisms.

关键词： Aqueous BiI_(3)-Zn battery Dual mechanisms I^(-)-induced uniform zinc deposition Ultralong cyclic life Flexible quasi-solid-state battery

Sulfonated poly(aryl ether ketone sulfone)modified by polyoxometalates LaW_(10) clusters for proton exchange membranes with high proton conduction performance

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Tungsten 2024年第2期6卷 454-464页

作者： Meng-long liu Xu Han Wen-Wen He Feng-yu Jiang Fang Ji Wang-Wang Shen Tao Zhou Jing-Mei Xu Ya-Qian Lan School of Chemistry and Life Science Changchun University of TechnologyChangchun 130012China Advanced Institute of Materials Science Changchun University of TechnologyChangchun 130012China School of Chemistry South China Normal UniversityGuangzhou 510006China

Polyoxometalates(POMs)are classified as solid superacids which can exhibit notable proton conductivity,making them a promising functional inorganic filler for enhancing the proton conductivity of proton exchange membranes(PEMs).In this study,a series of hybrid membranes were obtained by molecular-level hybridization of Weakley-type POM Na_(7)H_(2)LaW_(10)O_(36)(LaW_(10))clusters into sulfonated poly(aryl ether ketone sulfone)(SPAEKS).All hybrid membranes exhibited greater proton conductivity than the pristine membrane in the 30–80℃temperature range.When the doping amount of LaW 10 reached 7 wt.%,the proton conductivity of M-LaW 10^(-7)achieved 64 mS·cm^(−1)at 80℃.Lanthanide ions'high coordination number property and variable coordination environment can aid to attract more water molecules from the environment.LaW 10 and these bound water can construct denser hydrogen bonds with–SO_(3)H of SPAEKS.These intensive hydrogen bonds will facilitate the constitution of more continuous proton transport channels,and improve the proton conductivity of the hybrid membrane.This work off ers a fresh approach to using POMs containing rare-earth components in PEMs.

关键词： Polyoxometalates Rare-earth elements Sulfonated poly(arylene ether ketone sulfone) Proton exchange membranes

Generic Existence of Infinitely Many Non-contractible Closed Geodesics on Compact Space Forms

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Acta Mathematica Sinica,English Series 2024年第7期40卷 1674-1684页

作者： Hui liu yu Chen WANG School of Mathematics and Statistics Wuhan University School of Mathematics Tianjin Normal University

Let M = S~n/Γ and h be a nontrivial element of finite order p in π1（M）, where the integers n, p ≥ 2, Γ is a finite abelian group which acts freely and isometrically on the n-sphere and therefore M is diffeomorphic to a compact space form. In this paper, we prove that there are infinitely many noncontractible closed geodesics of class [h] on the compact space form with Cr-generic Finsler metrics,where 4 ≤ r ≤ ∞. The conclusion also holds for Cr-generic Riemannian metrics for 2 ≤ r ≤ ∞. The proof is based on the resonance identity of non-contractible closed geodesics on compact space forms.

关键词： Compact space forms non-contractible closed geodesics generic Finsler metrics resonance identity 53C22 58E05 58E10

Dynamic Simulation of Distribution Networks Using Multi-stage Discontinuous Galerkin Method

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CSEE Journal of Power and Energy Systems 2024年第1期10卷 185-196页

作者： Ruizhi yu Wei Gu Weiqi liu Peixin Li Wei liu School of Electrical Engineering Southeast UniversityNanjing 210096China. the School of Electrical Engineering Southeast UniversityNanjing 210096China School of Automation Nanjing University of Science and TechnologyNanjing 210094China

Dynamic simulation plays a fundamental role in security evaluation of distribution networks(DNs).However,the strong stiffness and non-linearity of distributed generation(DG)models in DNs bring about burdensome computation and noteworthy instability on traditional methods which hampers the rapid response of simulation tool.Thus,a novel L-stable approximate analytical method with high accuracy is proposed to handle these problems.The method referred to as multistage discontinuous Galerkin method(MDGM),first derives approximate analytical solutions(AASs)of state variables which are explicit symbolic expressions concerning system states.Then,in each time window,it substitutes values for symbolic variables and trajectories of state variables are obtained subsequently.This paper applies MDGM to DG models to derive AASs.Local-truncation-error-based variable step size strategy is also developed to further improve simulation efficiency.In addition,this paper establishes detailed MDGM-based dynamic simulation procedure.From case studies on a numerical problem,a modified 33-bus system and a practical large-scale DN,it can be seen that proposed method demonstrates fast and dependable performance compared with the traditional trapezoidal method.

关键词： Approximate analytical method distribution network distributed generation dynamic simulation multi-stage discontinuous Galerkin method variable step size

Tongxinluo Activates PI3K/AKT Signaling Pathway to Inhibit Endothelial Mesenchymal Transition and Attenuate Myocardial Fibrosis after Ischemia-Reperfusion in Mice

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Chinese Journal of Integrative Medicine 2024年第7期30卷 608-615页

作者： WEI Ya-ru HOU yun-long YIN yu-jie LI Zhen liu Yi HAN Ning-xin WANG Zi-xuan liu Lu WANG Xiao-qi HAO yuan-jie MA Kun GU Jiao-jiao JIA Zhen-hua Graduate School Hebei University of Chinese Medicine Shijiazhuang Yiling Pharmaceutical New Drug Evaluation Center Hebei Institute of Integrated Traditional and Western Medicine National Key Laboratory for Innovation and Transformation of Luobing Theory Department of Cardiology Hebei Yiling Hospital Graduate School Hebei Medical University

Objective: To investigate the potential role of Tongxinluo(TXL) in attenuating myocardial fibrosis after myocardial ischemia-reperfusion injury(MIRI) in mice. Methods: A MIRI mouse model was established by left anterior descending coronary artery ligation for 45 min. According to a random number table, 66 mice were randomly divided into 6 groups(n=11 per group): the sham group, the model group, the LY-294002 group, the TXL group, the TXL+LY-294002 group and the benazepril(BNPL) group. The day after modeling, TXL and BNPL were administered by gavage. Intraperitoneal injection of LY-294002 was performed twice a week for 4 consecutive weeks. Echocardiography was used to measure cardiac function in mice. Masson staining was used to evaluate the degree of myocardial fibrosis in mice. Qualitative and quantitative analysis of endothelial mesenchymal transition(EndMT) after MIRI was performed by immunohistochemistry, immunofluorescence staining and flow cytometry, respectively. The protein expressions of platelet endothelial cell adhesion molecule-1(CD31), α-smoth muscle actin(α-SMA), phosphatidylinositol-3-kinase(PI3K) and phospho protein kinase B(p-AKT) were assessed using Western blot. Results: TXL improved cardiac function in MIRI mice, reduced the degree of myocardial fibrosis, increased the expression of CD31 and inhibited the expression of α-SMA, thus inhibited the occurrence of EndMT(P0.05). In addition, the use of the PI3K/AKT pathway-specific inhibitor LY-294002 to block this pathway and combination with TXL intervention, eliminated the protective effect of TXL, further supporting the protective effect of TXL. Conclusion: TXL activated the PI3K/AKT signaling pathway to inhibit EndMT and attenuated myocardial fibrosis after MIRI in mice.

关键词： myocardial fibrosis endothelial mesenchymal transition myocardial ischemia-reperfusion injury phosphatidylinositol-3-kinase/protein kinase B (PI3K/AKT) pathway

Pien Tze Huang Inhibits Migration and Invasion of Hepatocellular Carcinoma Cells by Repressing PDGFRB/YAP/CCN2 Axis Activity

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Chinese Journal of Integrative Medicine 2024年第2期30卷 115-124页

作者： LUO Zhi-yi TIAN Qi CHENG Niang-mei liu Wen-han YANG Ye CHEN Wei ZHANG Xiang-zhi ZHENG Xiao-yuan CHEN Ming-sheng ZHUANG Qiu-yu ZHAO Bi-xing liu Cong-sheng liu Xiao-long LI Qin WANG Ying-chao The United Innovation of Mengchao Hepatobiliary Technology Key Laboratory of Fujian Province Mengchao Hepatobiliary Hospital of Fujian Medical UniversityFuzhou(350025)China Fujian Pien Tze Huang Enterprise Key Laboratory of Natural Medicine Research and Development Zhangzhou Pien Tze Huang Pharmaceutical Co.Ltd.ZhangzhouFujian Province(363099)China College of Biological Science and Engineering and Mengchao Med-X Center Fuzhou UniversityFuzhou(350116)China Department of Internal Medicine Mengchao Hepatobiliary Hospital of Fujian Medical UniversityFuzhou(350025)China

Objective:To investigate the effects of Pien Tze Huang(PZH) on the migration and invasion of HCC cells and underlying molecular mechanism.Methods:Cell counting kit-8(CCK-8) was applied to evaluate the cell viabilities of SMMC-7721,SK-Hep-1,C3A and HL-7702(6 × 10^(3)cells/well) co-incubated with different concentrations of PZH(0,0.2,0.4,0.6,0.8 mg/mL) for 24 h.Transwell,wound healing assay,CCK-8and Annexin V-FITC/PI staining were conducted to investigate the effects of PZH on the migration,invasion,proliferation and apoptosis of SK-Hep-1 and SMMC-7721 cells(650 μg/mL for SK-Hep-1 cells and 330 μg/mL for SMMC-7721 cells),respectively.In vivo,lung metastasis mouse model constructed by tail vein injection of HCC cells was used for evaluating the anti-metastasis function of PZH.SK-Hep-1 cells(10^(6)cells/200 μL per mice) were injected into B-NDG mice via tail vein.Totally 8 mice were randomly divided into PZH and control groups,4 mice in each group.After 2-d inoculation,mice in the PZH group were administered with PZH(250 mg/kg,daily) and mice in the control group received only vehicle(PBS) from the 2nd day after xenograft to day 17.Transcriptome analysis based on RNA-seq was subsequently used for deciphering anti-tumor mechanism of PZH.Quantitative real-time polymerase chain reaction(qRT-PCR) and Western blot were applied to verify RNA-seq results.Luciferase reporter assay was performed to examine the transcriptional activity of yes-associated protein(YAP).Results:PZH treatment significantly inhibited the migration,invasion,proliferation and promoted the apoptosis of HCC cells in vitro and in vivo(P<0.01).Transcriptome analysis indicated that Hippo signaling pathway was associated with anti-metastasis function of PZH.Mechanical study showed PZH significantly inhibited the expressions of platelet derived growth factor receptor beta(PDGFRB),YAP,connective tissue growth factor(CCN2),N-cadherin,vimentin and matrix metallopeptidase 2(MMP2,P<0.01).Meanwhile,the phosphorylation of YAP was also enhanced by PZH treatment in v

关键词： PienTzeHuang hepatocellular carcinoma RNA-seq Hippo yes-associated protein

Equivalence between the internal observability and equation

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Applied Mathematics(A Journal of Chinese Universities) 2024年第1期39卷 89-97页

作者： liu Wen-jun TU Zhi-yu School of Mathematics and Statistics Nanjing University of Information Science and TechnologyNanjing 210044China

This paper is concerned with a third order in time linear Moore-Gibson-Thompson equation which describes the acoustic velocity potential in ultrasound wave program.Influenced by the work of Kaltenbacher,Lasiecka and Marchand(Control Cybernet.2011,40:971-988),we establish an observability inequality of the conservative problem,and then discuss the equivalence between the exponential stabilization of a dissipative system and the internal observational inequality of the corresponding conservative system.

关键词： Moore-Gibson-Thompson equation internal observability exponential stability

Acupoint Selection Standards of Auricular Therapy in the Treatment of Maintenance Hemodialysis Insomnia Based on Data Mining

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World Journal of Traditional Chinese Medicine 2024年第1期10卷 53-64页

作者： Jun-Xin Wang Bing-Qian Zou yu-Feng Chen Cheng-long Wang Wei-Hong Li Xue-Ling Ma Xiang-Di liu Department of TCM Nursing School of NursingBeijing University of Chinese MedicineBeijingChina Department of Healthcare Beijing HospitalNational Center of GerontologyInstitute of Geriatric MedicineChinese Academy of Medical SciencesP.R.China Pharmacology of Integrated Chinese and Western Medicine School of Traditional Chinese MedicineBeijing University of Chinese MedicineBeijingChina Beijing Key Laboratory of TCM Syndrome and Formula School of Traditional Chinese MedicineBeijing University of Chinese MedicineBeijingChina Key Laboratory of TCM Syndrome and Formula School of Traditional Chinese MedicineBeijing University of Chinese MedicineMinistry of EducationBeijingChina

Background:Insomnia is a high-incidence complication in patients undergoing maintenance hemodialysis(MHD).Auricular therapy can effectively improve sleep with few adverse effects.Acupoint selection affects the impact of auricular therapy.However,there is currently a lack of analysis on the standards of acupoint selection.Our study used data mining technology to investigate the acupoint selection principles and characteristics of auricular therapy for the treatment of MHD-related insomnia.Objective:The objective of the study is to explore the standards of acupoint selection in auricular therapy for the treatment of MHD-related insomnia through data mining technology.Materials and Methods:We searched three English(PubMed,WOS,and Embase)and four Chinese(CNKI,VIP,Wangfang,and CBM)databases for studies on auricular therapy for MHD-related insomnia from self-establishment to November 14,2022.Results:Eighty-one publications were involved,which included 33 acupoints.The most common auricular points in patients with MHD-related insomnia were the Shenmen,heart,and kidney points.More applications involved the visceral,nervous system,and specific acupoints.Five effective clusters and two clusters were obtained through cluster analysis,including specific auricular points for insomnia,such as the multi-dream area,neurasthenia area,deep sleep point,and anterior ear lobe.Complex network analysis showed that the core auricular acupoint combinations for the intervention of MHD-related insomnia were Shenmen with kidney,Shenmen with heart,heart with kidney,heart with Shenmen,and heart and Shenmen with subcortex.Conclusions:The selection of auricular points for the treatment of MHD-related insomnia was guided by the heart theory of traditional Chinese medicine.Clinical treatment attaches importance to the use of the multi-dream area,neurasthenia area,and other acupoints.

关键词： Acupoint selection standards auricular therapy data mining insomnia maintenance hemodialysis

V0405 Dra: A New Deep and Low Mass Ratio Contact Binary with Extremely Fast Decrease in the Orbital Period

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Research in Astronomy and Astrophysics 2024年第6期24卷 289-295页

作者： Chao-yue Li Lin-Qiao Jiang Jie Zheng Yi-Man liu Xiao-yu long Min Sun Han-Lu Zhang Xiao-Man Tian School of Science Leshan Normal University Center for Applied Optics Research Leshan Normal University Key Laboratory of Detection and Application of Space Effect in Southwest Sichuan CAS Key Laboratory of Optical Astronomy National Astronomical Observatories Chinese Academy of Sciences School of Aeronautics Shandong Jiaotong University

V0405 Dra is a W UMa-type binary star. Based on the TESS data, we have conducted an orbital period study and performed a light curve analysis for the system. The orbital period study reveals that the O-C curve for V0405 Dra exhibits secular decrease at an extremely high rate of d P/dt =-2.71 × 10-6day year-1, along with periodic variations characterized by an amplitude of A3= 0.0032 day and a period of P3= 1.413 years. The orbital periodic change is possibly due to the light-travel time effect resulting from an additional third body in the system, for which we estimate a minimum mass of M3= 0.77M⊙. By employing the 2013 version of the Wilson-Devinney（W-D） method to synthesize a light curve, we derived photometric solutions indicating that V0405 Dra is a new deep（ f = 68.7%） and low-mass ratio（q = 0.175） contact binary. The fast decrease in its orbital period is likely caused by mass transfer from the more massive primary star to the less massive secondary star, or due to angular momentum loss. With further mass transfer and loss of angular momentum, the binary will gradually evolve into a tighter contact configuration, eventually leading to a merger into a single star, following the evolutionary paths suggested for such deep and low mass ratio contact binaries.

关键词： (stars:) binaries (including multiple): close (stars:) binaries: eclipsing stars: individual (V0405 Dra)