检索结果-南通市图书馆

Rheumatic valvular heart disease treated with traditional Chinese medicine:A case report

在线全文

学校读者我要写书评

暂无评论

World Journal of Clinical Cases 2023年第7期11卷 1600-1606页

作者： Wei-Hang Chen yan Tan ya-lei wang Xu wang Zhao-Heng Liu School of Life Sciences Beijing University of Chinese MedicineBeijing 102488China School of Traditional Chinese Medicine Beijing University of Chinese MedicineBeijing 102488China

BACKGROUND Rheumatic heart disease(RHD)is an autoimmune disease that leads to irreversible valve damage and heart *** is an effective treatment;however,it is invasive and carries risks,restricting its broad ***,it is essential to find alternative nonsurgical treatments for *** SUMMARY A 57-year-old woman was assessed with cardiac color Doppler ultrasound,left heart function tests,and tissue Doppler imaging evaluation at Zhongshan Hospital of Fudan *** results showed mild mitral valve stenosis with mild to moderate mitral and aortic regurgitation,confirming a diagnosis of rheumatic valve *** her symptoms became severe,with frequent ventricular tachycardia and supraventricular tachycardia>200 beats per minute,her physicians recommended *** a 10-day preoperative waiting period,the patient asked to be treated with traditional Chinese *** 1 week of this treatment,her symptoms improved significantly,including resolution of the ventricular tachycardia,and the surgery was postponed pending further *** 3-month follow-up,color Doppler ultrasound showed mild mitral valve stenosis with mild mitral and aortic ***,it was determined that no surgical treatment was *** Traditional Chinese medicine treatment effectively relieves symptoms of RHD,particularly mitral valve stenosis and mitral and aortic regurgitation.

关键词： Rheumatic heart disease Valvular damage Mitral stenosis Chinese formulas Traditional Chinese medicine treatment Case report

In-situ SEM characterization of fracture mechanism of TiB/Ti-2Al-6Sn titanium matrix composites after electroshocking treatment

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Rare Metals 2024年第6期43卷 2805-2818页

作者： ya-ya Wu Jian Zhou Guo-lei Han yan Wen Zhou wang Li-Qiang wang Wei-Jie Lv Le-Chun Xie Lin Hua Hubei Key Laboratory of Advanced Technology for Automotive Components Wuhan University of TechnologyWuhan 430070China Hubei Collaborative Innovation Center for Automotive Components Technology Wuhan 430070China Faculty of Materials and Manufacturing Beijing University of TechnologyBeijing 100124China State Key Laboratory of Metal Matrix Composites School of Materials Science and EngineeringShanghai Jiao Tong UniversityShanghai 200240China

In this article,in-situ scanning electron microscope characterization of the tensile properties of TiB/Ti-2Al-6Sn titanium matrix composite(TMC)was conducted before and after electroshocking treatment(EST).After EST,the tensile strength increased by 113.2 *** effect of EST on the tensile strength and fracture behavior of TiB was investigated using in-situ characterization of the fracture morphology and crack propagation path of the matrix and *** EST,TiB fracture introduced cracks that extended into the matrix,resulting in material *** EST,the refined TiB improved the bearing capacity of the matrix,thereby improving TMC ***,after EST,the cracks were introduced into the matrix,and resulting the fracture of matrix *** an increase in the external load,cracks in the matrix were observed to propagate to TiB,and the refined TiB was fractured,detached,and pulled out,resulting in the formation of *** the propagation path of the main crack after EST showed that the deflection angle of the main crack *** micro structure of the fracture surface indicated that the fracture of the matrix was plastic,whereas that of TiB was *** EST,the size and area of the dimples increased,confirming the increase in *** results revealed that the comprehensive mechanical properties of TiB/Ti-2Al-6Sn improved after ***,EST is an efficient method for tailoring the micro structures and mechanical properties of TMCs.

关键词： TiB/Ti-2Al-6Sn In-situ microstructure characterization Tensile properties Reinforcement Electroshocking treatment(EST)

Metal-organic framework-derived CoSe_(2)@N-doped carbon nanocubes for high-performance lithium-ion capacitors

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2024年第5期43卷 2150-2160页

作者： lei wang Xiong Zhang yan-yan Kong Chen Li ya-Bin An Xian-Zhong Sun Kai wang yan-Wei Ma Institute of Electrical Engineering Chinese Academy of SciencesBeijing 100190China School of Engineering Sciences University of Chinese Academy of SciencesBeijing 100190China Institute of Electrical Engineering and Advanced Electromagnetic Drive Technology Qilu ZhongkeJinan 250013China School of Materials Science and Engineering Zhengzhou UniversityZhengzhou 450001China

Cobalt selenide(CoSe_(2))has garnered considerable attention as a prospective anode candidate for advanced lithium-ion storage,prompting comprehensive ***,CoSe_(2)-based anodes usually suffer from significant volume variation upon lithiation leading to unsatisfactory cycling ***,a versatile synthesis route is proposed for the in-situ fabrication of CoSe2nanoparticles embedded in N-dope carbon skeleton(CoSe_(2)@NC)through annealing treatment and selenization of a metal–organic framework-derived(MOF)*** N-doped carbon derived from the MOF serves not only as an excellent conductive substrate but also as a confined reactor,effectively inhibiting the structural instability and alleviating the inevitable volume change of CoSe_(2).Owing to their unique nanostructure,the as-prepared CoSe_(2)@NC exhibits a high capacity of 745.9mAh·g^(-1)at 0.1 A·g^(-1),while maintaining excellent rate capability and an impressive ***,the assembled lithium-ion capacitor(LIC)based on CoSe_(2)@NC demonstrates an energy density of 130Wh·kg^(-1),a power density of 24.6 kW·kg^(-1),and remarkable capacity retention of 90.8%after 8000 *** results highlight the great potential of CoSe_(2)@NC for practical applications.

关键词： Lithium capacitors Cobalt selenide Metal-organic frameworks N-doped carbon

The neuroprotective role of Panax notoginseng saponins in APP/PS1 transgenic mice through the modulation of cerebrovascular

在线全文

学校读者我要写书评

暂无评论

Traditional Medicine Research 2020年第5期5卷 355-367页

作者： yan Tan Chen-Chen Song Zi-Hui Xu Fang He ya-Li Zhang ya-lei wang Xue wang Liang-Qin Wan Xu wang Ling-Ling Qin Tong-Hua Liu Qian Hua Beijing University of Chinese Medicine Beijing 100029China Tianjin College University of Science and Technology BeijingTianjin 301830China

Background:Panax notoginseng saponins(PNS)is extracted from Sanqi(Panax notoginseng),which is a valuable herb and has been widely used in traditional Chinese medicine for the treatment of cerebrovascular diseases and *** has been proved to promote blood circulation and angiogenesis by inhibiting platelet *** our previous study,PNS accompanied with geniposide can prevent Alzheimer’s disease(AD).However,the efficacy of PNS and its potential mechanism in AD remain ***:Amyloid precursor protein/presenilin-1(APP/PS1)transgenic(Tg)mice were used as AD-like animal ***-type mice and APP/PS1 transgenic were administrated with saline solution while mice in PNS treatment group were administrated with PNS at a dosage of 17 mg/kg/day for three *** water maze(MWM)was applied to evaluate the spatial learning and memory and step-down test was used to evaluate the cognitive function.1%Thioflavin-S staining was used to calculate the average number amyloid plaques in cortex and ***31 staining was detected to observe the density of cerebrovascular in hippocampus areas and CD105 staining was further detected to evaluate *** Doppler PeriFlux 5000 was further measured the change of cerebrovascular blood *** was used to draw the molecular structures of five main ingredients of *** were used to estimate the potential targets of ***:By a bench of behavioral tests,PNS showed a better tendency in proving cognitive *** addition,the amyloid plaques in both cortex and hippocampus were significantly reduced after PNS intervention(P<0.05 and P<0.001 respectively).Furthermore,the density of cerebrovascular in the hippocampus areas was increased under PNS administration(P<0.001),which accompanied with angiogenesis in dentate gyrus areas and cerebrovascular blood flow promotion(P<0.05).By AlzPlatform docking serve,we screened five major ingredients of PNS-R1,Rd,Rb1,Re and *** screening

关键词： Alzheimer’s disease Angiogenesis Behavioral test Cerebrovascular blood flow Panax notoginseng saponins

Two-Stage Online Debiased Lasso Estimation and Inference for High-Dimensional Quantile Regression with Streaming Data

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Journal of Systems Science & Complexity 2024年第3期37卷 1251-1270页

作者： PENG yanjin wang lei School of Statistics and Data Science KLMDASRLEBPS and LPMCNankai UniversityTianjin 300071China

In this paper,the authors propose a two-stage online debiased lasso estimation and statistical inference method for high-dimensional quantile regression(QR)models in the presence of streaming *** the first stage,the authors modify the QR score function based on kernel smoothing and obtain the online lasso smoothed QR estimator through iterative *** estimation process only involves the current data batch and specific historical summary statistics,which perfectly accommodates to the special structure of streaming *** the second stage,an online debiasing procedure is carried out to eliminate biases caused by the lasso penalty as well as the accumulative approximation error so that the asymptotic normality of the resulting estimator can be *** authors conduct extensive numerical experiments to evaluate the performance of the proposed *** experiments demonstrate the effectiveness of the proposed method and support the theoretical *** application to the Beijing PM2.5 Dataset is also presented.

关键词： Adaptive tuning asymptotic normality debiased lasso online updating quantile regres-sion

Research on shell-side heat and mass transfer with multi-component in LNG spiral-wound heat exchanger under sloshing conditions

在线全文

学校读者我要写书评

暂无评论

Petroleum Science 2024年第2期21卷 1333-1345页

作者： Xue-Ping Du Guang-lei Yu ya-Cheng Xu Zhi-Jie Chen Nai-Liang Li Huan-Guang wang School of Low-carbon Energy and Power Engineering China University of Mining and TechnologyXuzhou221116JiangsuChina Key Laboratory of Thermo-Fluid Science and Engineering MOEXi'an Jiaotong UniversityXi'an710049ShaanxiChina Xi'an Aerospace Propulsion Test Technology Institute Xi'an710100ShaanxiChina

The spiral-wound heat exchanger(SWHE) is the primary low-temperature heat exchanger for large-scale LNG plants due to its high-pressure resistance, compact structure, and high heat exchange efficiency. This paper studied the shell-side heat and mass transfer characteristics of vapor-liquid two-phase mixed refrigerants in an SWHE by combining a multi-component model in FLUENT software with a customized multicomponent mass transfer model. Besides, the mathematical model under the sloshing condition was obtained through mathematical derivation, and the corresponding UDF code was loaded into FLUENT as the momentum source term. The results under the sloshing conditions were compared with the relevant parameters under the steady-state condition. The shell-side heat and mass transfer characteristics of the SWHE were investigated by adjusting the component ratio and other working conditions. It was found that the sloshing conditions enhance the heat transfer performance and sometimes have insignificant effects. The sloshing condition is beneficial to reduce the flow resistance. The comprehensive performance of multi-component refrigerants has been improved and the improvement is more significant under sloshing conditions, considering both the heat transfer and pressure *** results will provide theoretical support for the research and design of multi-component heat and mass transfer enhancement of LNG SWHE under ocean sloshing conditions.

关键词： Spiral-wound heat exchanger Sloshing conditions Two-phase flow Multi-component Heat and mass transfer

Mafic-ultramafic magma activity and copper-nickel sulfide metallogeny during Paleozoic in the Eastern Kunlun Orogenic Belt,Qinghai Province,China

在线全文

学校读者我要写书评

暂无评论

China Geology 2019年第4期2卷 467-477页

作者： Zhao-wei Zhang ya-lei wang Chi-yuan wang Bing Qian Wen-yuan Li Jiang-wei Zhang Min-xin You Key Laboratory for the Study of Focused Magmatism and Giant Ore Deposits Xi’an Center of China Geological SurveyMinistry of Natural ResourcesXi’an 710054China Natural Resources Department of Xinjiang Uygur Autonomous Region Urumqi 830000China Institute of Earth Sciences Chengdu University of GeosciencesChengdu 610059China

The Eastern Kunlun Orogenic Belt(EKOB)has a complex geological structure and diverse magmatic activities,which are closely related to the Qaidam Basin and the Tethys tectonic *** are at least 3 stages mafic-ultramafic rocks occurred in the Early Paleozoic in *** first stage is the Later-Silurian to Early Devonian,represented by the giant Xiarihamu super large magmatic Cu-Ni deposit,containing about 1.18 million metric tons(Mt)of nickel with average grades of 0.65%Ni,and its age of ore-forming pyroxene peridotite is 411 Ma;The second stage is the Early Carboniferous,represented by the large Shitoukengde magmatic Cu-Ni sulfide deposit,and its ore-forming age of the olivine websterite is 334 Ma;The third stage of mafic-ultramafic rocks occurred mainly during the Middle-Late Triassic,represented by Xiaojianshan,Lalinggaoli,and Kaimuqi complexes,and no economical ore bodies have been found in this *** authors summarized the difference between the ore-bearing and the nonmineralized mafic-ultramafic rocks in the *** olivine of the ore-bearing complexes contains higher MgO and SiO2 content but lower FeO and CaO contents,and the clinopyroxene of ore-bearing complexes contains lower FeO and CaO *** sulfur contamination is key to the formation of the giant Xiarihamu Ni deposit,and crustal sulfur contamination degree of the giant magmatic Ni deposit is higher than that of large Ni *** above indicators could guide the exploration and evaluation of similar deposits in the EKOB.

关键词： Early Devonian Early Carboniferous Mafic-ultramafic complexes Cu-Ni deposit Mineral exploration engineering Eastern Kunlun orogenic belt Qinghai China

Anti-corrosive and highly reversible zinc metal anode enabled by the phenolic resin coating

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2024年第5期43卷 2115-2124页

作者： ya-Ping wang ya-Di yang Shu-Qi Duan Li wang Jia-Shuo Guo An-Qiang Pan School of Materials Science and Engineering Hebei University of TechnologyTianjin 300130China Key Laboratory of Special Functional Materials for Ecological Environment and Information(Hebei University of Technology).Ministry of Education Tianjin 300130China Key Laboratory for New Type of Functional Materials in Hebei Province Hebei University of TechnologyTianjin 300130China School of Materials Science and Engineering Central South UniversityChangsha 410083China

Aqueous zinc-ion batteries have attracted much attention due to their high theoretical capacity,low cost high safety,and ***,challenges such as dendrite growth and side reactions severely hinder the electrochemical performance of the Zn anode,leading to low Coulombic efficiency(CE)or even short circuits Herein,phenolic resin(PF)is used as a protective coating on the surface of the zinc metal *** PF layer can greatly improve the corrosion resistance of the Zn electrode in the ***,this artificial electrode/electrolyte interphase also elevates the nucleation barrier and restrains Zn^(2+)2D diffusion,regulating the zinc deposition/dissolution *** a result,PF@Zn symmetric cells exhibit superior performance than that of bare Zn symmetric cells,achieving a stable and dendrite-free cycle of 1400 ***,the carbon nanotube MnO_(2)||PF@Zn(CNT/MnO_(2)||PF@Zn)full cell also delivers a long cycle life with a high-capacity retention of about 180.0 m Ah·g^(-1)after 1400 cycles,far exceeding that of bare Zn *** work provides a facile strategy for achieving a dendrite-free and rechargeable zinc anode.

关键词： Rechargeable aqueous batteries Zn metal anode Phenolic resin Anti-corrosion

Pre-Training Physics-Informed Neural Network with Mixed Sampling and Its Application in High-Dimensional Systems

在线全文

学校读者我要写书评

暂无评论

Journal of Systems Science & Complexity 2024年第2期37卷 494-510页

作者： LIU Haiyi ZHANG yabin wang lei School of Mathematics and Physics North China Electric Power UniversityBeijing 102206China School of Control and Computer Engineering North China Electric Power UniversityBeijing 102206China

Recently,the physics-informed neural network shows remarkable ability in the context of solving the low-dimensional nonlinear partial differential ***,for some cases of high-dimensional systems,such technique may be time-consuming and *** this paper,the authors put forward a pre-training physics-informed neural network with mixed sampling(pPINN)to address these *** based on the initial and boundary conditions,the authors design the pre-training stage to filter out the set of the misfitting points,which is regarded as part of the training points in the next *** authors further take the parameters of the neural network in Stage 1 as the initialization in Stage *** advantage of the proposed approach is that it takes less time to transfer the valuable information from the first stage to the second one to improve the calculation accuracy,especially for the high-dimensional *** verify the performance of the pPINN algorithm,the authors first focus on the growing-and-decaying mode of line rogue wave in the Davey-Stewartson I *** case is the accelerated motion of lump in the inhomogeneous Kadomtsev-Petviashvili equation,which admits a more complex evolution than the uniform *** exact solution provides a perfect sample for data experiments,and can also be used as a reference frame to identify the performance of the *** experiments confirm that the pPINN algorithm can improve the prediction accuracy and training efficiency well,and reduce the training time to a large extent for simulating nonlinear waves of high-dimensional equations.

关键词： High-dimensional systems mixed sampling nonlinear wave pre-training physics-informed neural network