检索结果-南通市图书馆

Calibration of the Solar X-ray Detector on-board the macao science Satellite-1B for Soft X-ray Detection

在线全文

学校读者我要写书评

暂无评论

science China Earth sciences 2025年第1期68卷 11-26页

作者： Man-Hei NG Xiaoping ZHANG Jianwu CHEN Yongqiang SHI Fuchang ZUO Wenxi PENG Weichun FU Liansheng LI Pengwei LUO Chi-Long TANG Guozheng ZHANG Zhiwu MEI Li WANG Cunhui LI Jiaming OU Yanyan Xu State Key Laboratory of Lunar and Planetary sciences Macao University of Science and TechnologyMacao999078China Space Optoelectronic Measurement and Perception Laboratory Beijing Institute of Control EngineeringBeijing100190China Institute of High Energy Physics Chinese Academy of SciencesBeijing100049China science and technology on Vacuum technology and Physics Laboratory Lanzhou Institute of PhysicsLanzhou730000China China National Space Administration(CNSA) Macao Center for Space Exploration and ScienceMacao999078China

The Solar X-ray Detector(SXD)on-board the macao science Satellite-1B(MSS-1B)was successfully launched via the Chinese Long March-2C rocket on 21 May 2023,and commenced operations in early June of the same *** MSS-1B/Soft X-ray Detection Units(SXDUs)employ two silicon drift detectors(SDDs),providing a wide range of energy spectra spanning from 0.7 to 24 ***,the SXDUs deliver a high-resolution capability of 0.14 keV@5.9 keV and operate with a time cadence of 1 ***,we perform thorough calibrations of the MSS-1B/SXDUs,employing a combination of ground experiments and *** addition,quantitative analysis comparing the flux measurements obtained by the MSS-1B/SXDUs to the data collected by the Geostationary Operational Environmental Satellite(GOES),provides compelling evidence of their ***,the preliminary spectral analysis results showcase the robustness and expected performance of the MSS-1B/SXDUs,unlocking their potential for facilitating the study of dynamic evolution of solar ***,the innovative MSS-1B/Solar X-ray Detector facilitates concurrent observations of solar soft and hard X-rays,thereby making valuable contributions to the advancements in solar research.

关键词： macao science Satellite-1B(MSS-1B) Calibration Solar X-Ray Detector Spectrometer Soft X-rays Solar flares Solar abundances

Achievable Rate Analysis and Optimization of Double-RIS Assisted Spatially Correlated MIMO with Statistical CSI

在线全文

学校读者我要写书评

暂无评论

China Communications 2025年第1期22卷 139-157页

作者： Xu Kaizhe Guo Jiajia Zhang Jun Jin Shi Ma Shaodan Department of Communications and Networking Xi’an Jiaotong-Liverpool UniversitySuzhou 215123China State Key Laboratory of Internet of Things for Smart City University of MacaoMacao SARChina Jiangsu Key Laboratory of Wireless Communications Nanjing University of Posts and TelecommunicationsNanjing 210003China National Mobile Communications Research Laboratory Southeast UniversityNanjing 210096China State Key Laboratory of Internet of Things for Smart City and the Department of Electrical and Computer Engineering University of MacaoMacao SARChina

Reconfigurable intelligent surface(RIS)is a novel meta-material which can form a smart radio environment by dynamically altering reflection directions of the impinging electromagnetic *** the prior literature,the inter-RIS links which also contribute to the performance of the whole system are usually neglected when multiple RISs are *** this paper we investigate a general double-RIS assisted multiple-input multiple-output(MIMO)wireless communication system under spatially correlated non line-of-sight propagation channels,where the cooperation of the double RISs is also *** design objective is to maximize the achievable ergodic rate based on full statistical channel state information(CSI).Specifically,we firstly present a closedform asymptotic expression for the achievable ergodic rate by utilizing replica method from statistical *** a full statistical CSI-enabled optimal design is proposed which avoids high pilot training overhead compared to instantaneous CSI-enabled *** further reduce the signal processing overhead and lower the complexity for practical realization,a common-phase scheme is proposed to design the double *** results show that the derived asymptotic ergodic rate is quite accurate even for small-sized antenna *** the proposed optimization algorithm can achieve substantial gain at the expense of a low overhead and ***,the cooperative double-RIS assisted MIMO framework is proven to achieve superior ergodic rate performance and high communication reliability under harsh propagation environment.

关键词： common reflection pattern double RISs large system analysis MIMO replica method

Residential Energy Scheduling With Solar Energy Based on Dyna Adaptive Dynamic Programming

在线全文

学校读者我要写书评

暂无评论

IEEE/CAA Journal of Automatica Sinica 2025年第2期12卷 403-413页

作者： Kang Xiong Qinglai Wei Hongyang Li the Institute of Systems Engineering Macau University of Science and Technology IEEE the State Key Laboratory of Multimodal Artificial Intelligence Systems Institute of Automation Chinese Academy of Sciences the School of Artificial Intelligence University of Chinese Academy of Sciences

Learning-based methods have become mainstream for solving residential energy scheduling problems. In order to improve the learning efficiency of existing methods and increase the utilization of renewable energy, we propose the Dyna actiondependent heuristic dynamic programming(Dyna-ADHDP)method, which incorporates the ideas of learning and planning from the Dyna framework in action-dependent heuristic dynamic programming. This method defines a continuous action space for precise control of an energy storage system and allows online optimization of algorithm performance during the real-time operation of the residential energy model. Meanwhile, the target network is introduced during the training process to make the training smoother and more efficient. We conducted experimental comparisons with the benchmark method using simulated and real data to verify its applicability and performance. The results confirm the method's excellent performance and generalization capabilities, as well as its excellence in increasing renewable energy utilization and extending equipment life.

关键词： Adaptive dynamic programming (ADP) dynamic residential scenarios optimal residential energy management smart grid

A promising approach for quantifying focal stroke modeling and assessing stroke progression:optical resolution photoacoustic microscopy photothrombosis

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

Neural Regeneration Research 2025年第7期20卷 2029-2037页

作者： Xiao Liang Xingping Quan Xiaorui Geng Yujing Huang Yonghua Zhao Lei Xi Zhen Yuan Ping Wang Bin Liu Faculty of Health sciences University of MacaoMacao Special Administrative RegionChina Center for Cognitive and Brain sciences University of MacaoMacao Special Administrative RegionChina Department of Biomedical Engineering Southern University of Science and TechnologyShenzhenGuangdong ProvinceChina State Key Laboratory of Quality Research in Chinese Medicine Institute of Chinese Medical SciencesUniversity of MacaoTaipaMacao Special Administrative RegionChina Department of Emergency Zhujiang HospitalSouthern Medical UniversityGuangzhouGuangdong ProvinceChina

To investigate the mechanisms underlying the onset and progression of ischemic stroke,some methods have been proposed that can simultaneously monitor and create embolisms in the animal cerebral ***,these methods often require complex systems and the effect of age on cerebral embolism has not been adequately studied,although ischemic stroke is strongly *** this study,we propose an optical-resolution photoacoustic microscopy-based visualized photothrombosis methodology to create and monitor ischemic stroke in mice simultaneously using a 532 nm pulsed *** observed the molding process in mice of different ages and presented age-dependent vascular embolism ***,we integrated optical coherence tomography angiography to investigate age-associated trends in cerebrovascular variability following a *** imaging data and quantitative analyses underscore the differential cerebrovascular responses to stroke in mice of different ages,thereby highlighting the technique's potential for evaluating cerebrovascular health and unraveling age-related mechanisms involved in ischemic strokes.

关键词： age-dependent cerebral cortex ischemic stroke mouse model optical coherence tomography angiography photoacoustic microscopy photothrombosis vascular imaging

Event-Triggered Robust Parallel Optimal Consensus Control for Multiagent Systems

在线全文

学校读者我要写书评

暂无评论

IEEE/CAA Journal of Automatica Sinica 2025年第1期12卷 40-53页

作者： Qinglai Wei Shanshan Jiao Qi Dong Fei-Yue Wang IEEE the Institute of Systems Engineering Macau University of Science and Technology the State Key Laboratory of Multimodal Artificial Intelligence Systems Institute of Automation Chinese Academy of Sciences the School of Artificial Intelligence University of Chinese Academy of Sciences China Academy of Electronics and Information technology the State Key Laboratory of Multimodal Artificial Intelligence Systems the School of Artificial Intelligence University of Chinese Academy of Sciences

This paper highlights the utilization of parallel control and adaptive dynamic programming(ADP) for event-triggered robust parallel optimal consensus control(ETRPOC) of uncertain nonlinear continuous-time multiagent systems(MASs).First, the parallel control system, which consists of a virtual control variable and a specific auxiliary variable obtained from the coupled Hamiltonian, allows general systems to be transformed into affine systems. Of interest is the fact that the parallel control technique's introduction provides an unprecedented perspective on eliminating the negative effects of disturbance. Then, an eventtriggered mechanism is adopted to save communication resources while ensuring the system's stability. The coupled HamiltonJacobi(HJ) equation's solution is approximated using a critic neural network(NN), whose weights are updated in response to events. Furthermore, theoretical analysis reveals that the weight estimation error is uniformly ultimately bounded(UUB). Finally,numerical simulations demonstrate the effectiveness of the developed ETRPOC method.

关键词： Adaptive dynamic programming (ADP) critic neural network (NN) event-triggered control optimal consensus control robust control

An electrically activable nanochip to intensify gas-ionic-immunotherapy

在线全文

同方期刊数据库

学校读者我要写书评

暂无评论

science Bulletin 2025年第3期70卷 390-406页

作者： Gang Wang Jingrui Li Shumin Sun Yuqi Yang Zhihui Han Zifan Pei Liang Cheng Institute of Functional Nano&Soft Materials(FUNSOM) Jiangsu Key Laboratory for Carbon-Based Functional Materials&DevicesSoochow UniversitySuzhou 215123China

Excess intracellular H_(2)S induces destructive mitochondrial toxicity,while overload of Zn^(2+)results in cell pyroptosis and potentiates the tumor immunogenicity for ***,the precise delivery of both therapeutics remains a great ***,an electrically activable ZnS nanochip for the controlled release of H_(2)S and Zn^(2+)was developed for enhanced gas-ionic-immunotherapy(GIIT).Under an electric field,a locality with particularly high concentrations of H_(2)S and Zn^(2+)was established by the voltage-controlled degradation of the ZnS nanoparticles(NPs).Consequently,the ZnS nanochip-mediated gas-ionic therapy(GIT)resulted in mitochondrial membrane potential depolarization,energy generation inhibition,and oxidative stress imbalance in tumor ***,the cyclic guanosine monophosphate-adenosine monophosphate synthase-stimulator of interferon genes(cGAS-STING)signaling pathway was activated due to the mitochondrial ***,the released Zn^(2+)resulted in the increase of the intracellular Zn levels and cell pyroptosis,which enhanced the immunogenicity via the release of damage-associated molecular patterns(DAMPs).In vitro and in vivo studies revealed that the ZnS nanochip-based GIT effectively eliminated the tumors under an electric field and mobilized the cytotoxic T lymphocytes for *** combination withαCTLA-4 further promoted the adaptive immune response and inhibited tumor metastasis and long-term tumor *** work presented an electrically activable ZnS nanochip for combined immunotherapy,which might inspire the development of electric stimulation therapy.

关键词： H_(2)S gas therapy lonic interference therapy Electrically controll eddelivery Cell pyroptosis CGAS-STING pathway

On equidistribution theorems for multi-sequences of holomorphic line bundles

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

science China Mathematics 2025年第2期68卷 285-298页

作者： Manli Liu Weixiong Mai Guokuan Shao Department of Mathematics South China Agricultural UniversityGuangzhou 510642China macao Center for Mathematical sciences Macao University of Science and TechnologyMacao 999078China School of Mathematics(Zhuhai) Sun Yat-sen UniversityZhuhai 519082China

Given several sequences of Hermitian holomorphic line bundles{(L_(kp),h_(kp))}_(p=1)^(∞),we establish the distribution of common zeros of random holomorphic sections of Lkp with respect to singular *** also study the... 详细信息

关键词： equidistribution random holomorphic section pseudo-effective line bundle current

Compound heterozygous mutation of AFG3L2 causes autosomal recessive spinocerebellar ataxia through mitochondrial impairment and MICU1 mediated Ca2+overload

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

science China(Life sciences) 2025年第2期68卷 484-501页

作者： Hongyu Li Qingwen Ma Yan Xue Linlin Cai Liwen Bao Lei Hong Yitao Zeng Shu-Zhen Huang Richard H.Finnell Fanyi Zeng Shanghai Institute of Medical Genetics Shanghai Children’s HospitalShanghai Jiao Tong University School of MedicineShanghai 200040China Department of Histo-Embryology Genetics and Developmental BiologyShanghai Jiao Tong University School of MedicineShanghai 200025China NHC Key Laboratory of Medical Embryogenesis and developmental Molecular Biology Shanghai Key Laboratory of Embryo and Reproduction EngineeringShanghai 200040China Center for Precision Environmental Health Baylor College of MedicineHouston 77030USA School of Pharmacy Macao University of Science and TechnologyMacao 999078China

Autosomal recessive spinocerebellar ataxias(SCARs)are one of the most common neurodegenerative diseases characterized by progressive *** SCARs are known to be caused by mutations in multiple genes,there are still many cases that go undiagnosed or are *** this study,we presented a SCAR patient,and identified a probable novel pathogenic mutation(c.1A>G,p.M1V)in the AFG3L2 start *** proband's genotype included heterozygous mutations of the compound AFG3L2(p.[M1V];[R632X](c.[1A>G];[1894.C>T])),which were inherited from the father(c.1A>G,p.M1V)and mother(c.1894C>T,p.R632X).Functional studies performed on hi PSCs(human induced pluripotent stem cells)generated from the patients and HEK293T cells showed that the mutations impair mitochondrial function and the unbalanced expression of AFG3L2 mRNA and protein ***,this novel mutation resulted in the degradation of the protein and the reduction of the stability of the AFG3L2 protein,and MCU(mitochondrial calcium uniporter)complex mediated Ca2+overload.

关键词： AFG3L2 gene autosomal recessive spinocerebellar ataxia mitochondrial impairment Ca2+overload

Cerbera odollam fruit extracts enhance anti-cancer activity of sorafenib in HCT116 and HepG2 cells

在线全文

学校读者我要写书评

暂无评论

Chinese Herbal Medicines 2025年第1期17卷 108-126页

作者： Supawadee Parhira Orakot Simanurak Khemmachat Pansooksan Julintorn Somran Apirath Wangteeraprasert Zhihong Jiang Liping Bai Pranee Nangngam Dumrongsak Pekthong Piyarat Srisawang Department of Pharmaceutical technology Faculty of Pharmaceutical Sciences Naresuan University Center of Excellence for Innovation in Chemistry Naresuan University Center of Excellence for Environmental Health and Toxicology Faculty of Pharmaceutical Sciences Naresuan University Department of Physiology Faculty of Medical Science Naresuan University Department of Pharmaceutical Chemistry and Pharmacognosy Faculty of Pharmaceutical Sciences Naresuan University Department of Pathology Faculty of Medicine Naresuan University Department of Medicine Faculty of Medicine Naresuan University State Key Laboratory of Quality Research in Chinese Medicine Guangdong-Hong Kong-Macao Joint Laboratory of Respiratory Infectious Disease Macau Institute for Applied Research in Medicine and Health Macau University of Science and Technology Department of Biology Faculty of Science Naresuan University Department of Pharmacy Practice Faculty of Pharmaceutical Sciences Naresuan University Center of Excellence in Medical Biotechnology Faculty of Medical Science Naresuan University

Objective:While higher therapeutic doses of toxic cardiac glycosides derived from Cerbera odollam are frequently employed in cases of suicide or homicide,ongoing research is investigating the potential anticancer properties of low-concentration extracts obtained from the fruits of *** present study aimed to determine the enhanced anticancer effects and minimize potential side effects of combining extracts from *** fruits from Thailand with sorafenib against HCT116 and HepG2 ***:The dried powder of fresh green fruits of *** was fractionated,and its phytochemical contents,including total cardiac glycosides,phenolics,flavonoids,and triterpenoids,were *** cytotoxic effects of these fractions were evaluated against HCT116 and HepG2 cells using the MTT *** fractions showing the most significant response in HCT116 and HepG2 cells were subsequently combined with sorafenib to examine their synergistic *** induction,cell cycle progression,and mitochondrial membrane potential（MMP） were then *** underlying mechanism of the apoptotic effect was further investigated by analyzing reactive oxygen species（ROS） generation and the expression levels of antioxidant ***:Phytochemical analysis showed that ***-ethyl acetate fraction（COEtOAc） was rich in cardiac glycosides,phenolics,and flavonoids,while the dichloromethane fraction（CODCM） contained high levels of triterpenoids and *** 24 h treatment,HCT116 showed the most significant response to COEtOAc,while HepG2 responded well to CODCM with IC50values of（42.04±16.94） μg/mL and（123.75±14.21） μg/m L,***,COEtOAc（20 μg/mL） or CODCM（30 μg/mL）,both administered at sub-IC50concentrations,were combined with sorafenib at 6 μmol/L for HCT116 cells and2 μmol/L for HepG2 cells,incubated for 24 *** combination resulted in a significant suppression in cell viability by approximately 50%.The combination of treatments marked

关键词： apoptosis Cerbera odollam Gaertn. HCT116 HepG2 reactive oxygen species sorafenib