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exploring the Interplay between Local Chain Structure and Stress Distribution in Polymer Networks

Chinese Journal of Polymer Science 2024年第6期42卷 874-885页

作者： Jin-Tong Xue Yang Bai Li Peng Xian-bo Huang Zhao-Yan Sun School of Applied Chemistry and engineering University of Science and Technology of ChinaHefei230026China State Key Laboratory of Polymer Physics and Chemistry Changchun Institute of Applied ChemistryChinese Academy of SciencesChangchun130022China National-certified enterprise Technology Center Kingfa Science and Technology Co.Ltd.Guangzhou510663China

The mechanical behavior of polymer networks is intrinsically correlated with the local chain topology and chain *** this study,we delve into this relationship through the lens of coarse-grained molecular dynamics(CG-MD)*** aim is to illuminate the intricate interplay between local topology and stress distribution within polymer monomers,cross-linkers,and various components with distinct cross-link connections,thereby elucidating their collective impact on the mechanical properties of polymer *** mainly focus on how specific local structures contribute to the overall mechanical response of the *** particular,we employ local stress analysis to unravel the mechanics of these *** findings reveal the diverse responses of individual components,such as junctions,strands,cross-linkers between junctions,and dangling chain ends,when subjected to ***,we observe that these components exhibit varying degrees of deformation tolerance,underscoring the significance of their roles in determining the mechanical characteristics of the *** investigations highlight junctions as primary contributors to stress accumulation,and particles with higher local stress showing a stronger correlation between stress and Voronoi ***,our results indicate that both strands and cross-linkers between junctions exhibit heightened stress levels as strand lengths *** study enhances our understanding of the multifaceted factors governing the mechanical attributes of cross-linked polymer systems at the microstructural level.

关键词： Local chain structure Local stress Molecular dynamics simulation

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efficacy of Huoxue Qianyang Qutan recipe on essential hypertension:A randomized,double-blind,placebo-controlled trial

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Journal of Integrative Medicine 2024年第4期22卷 484-492页

作者： Jun Xie Yu-long Ma Ming-tai Gui Lei Yao Jian-hua Li Ming-zhu Wang Xun-jie Zhou Yi-fan Wang Ming-yi Zhao Hui Cao bo Lu de-yu Fu department of Cardiology Yueyang Hospital of Integrated Traditional Chinese and Western MedicineShanghai University of Traditional Chinese MedicineShanghai 200437China Shanghai University of Traditional Chinese Medicine Shanghai 200120China

Background:Hypertension,a prevalent disease,is a significant risk factor for coronary heart *** Qianyang Qutan recipe (HQQr),a traditional Chinese herbal remedy,has been used for treating hypertension over several ***:This study assesses HQQr’s efficacy for controlling blood pressure among patients with hypertension related to blood stasis,yang hyperactivity and ***,setting,participants and interventions:A randomized controlled trial was conducted at the Yueyang Hospital of Integrated Traditional Chinese and Western Medicine,Shanghai University of Traditional Chinese Medicine,China,from July 2020 to June *** components of HQQr were identified using thin-layer chromatography and high-performance liquid *** aged18–80 years,exhibiting traditional Chinese medicine syndromes of blood stasis,yang hyperactivity or phlegm,along with grades 1 or 2 hypertension,were randomly categorized into two *** intervention group was given HQQr granules alongside conventional hypertension treatment,while the control group was given placebo granules in addition to conventional treatment for 12 *** outcome measures:The primary outcome was clinic blood pressure,whereas secondary outcomes included metabolic indices (e.g.,homeostasis model assessment of insulin resistance[HOMA-Ir],total cholesterol[TC],low-density lipoprotein cholesterol and triglyceride),target organ damage indices (left ventricular mass index and urinary albumin creatinine ratio[UACr]) and inflammation indices(interleukin-6[IL-6]and high-sensitivity C-reactive protein[hs-CrP]).results:HQQr’s primary components were identified as salvianolic acid B,emodin and ferulic *** the 216 participants (108 in each group),compared to the control,the intervention group exhibited significant improvements (Pressure ([136.24±7.63]vs[130.06±8.50]mmHg),clinic diastolic blood pressure ([84.34±8.72]vs[80.46±6.05]mmHg),home systol

关键词： Huoxue Qianyang Qutan recipe Hypertension Target organ damage Glycolipid metabolism Inflammatory Chinese herbal compound

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Dynamical Dark energy in Light of Cosmic Distance Measurements.Ⅰ.A demonstration Using Simulated Datasets

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research in Astronomy and Astrophysics 2024年第6期24卷 7-14页

作者： Gan Gu Xiaoma Wang Xiaoyong Mu Shuo Yuan Gong-bo Zhao National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Institute for Frontiers in Astronomy and Astrophysics Beijing Normal UniversityBeijing 102206China

We develop methods to extract key dark energy information from cosmic distance measurements including the BAO scales and supernova(SN) luminosity *** using simulated data sets of the complete deSI,LSST and roman surveys designed for BAO and SN distance measurements,we show that using our method,the dynamical behavior of the energy,pressure,equation of state(with its time derivative) of dark energy and the cosmic deceleration function can all be accurately recovered from high-quality data,which allows for robust diagnostic tests for dark energy models.

关键词： (cosmology:)dark energy (cosmology:)large scale structure of universe (cosmology:)cosmic background radiation (cosmology:)cosmological parameters

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extreme precipitation detection ability of four high-resolution precipitation product datasets in hilly area:a case study in Nepal

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Advances in Climate Change research 2024年第3期15卷 390-405页

作者： Sunil Subba Yao-Ming Ma Wei-Qiang Ma Cun-bo Han Land-Atmosphere Interaction and its Climatic effects Group State Key Laboratory of Tibetan Plateau Earth SystemEnvironment and Resources(TPESER)Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijing 100101China College of earth and Planetary Sciences University of Chinese Academy of SciencesBeijing 100049China College of Atmospheric Science Lanzhou UniversityLanzhou 730000China National Observation and research Station for Qomolongma Special Atmospheric Processes and environmental Changes Dingri 858200China Kathmandu Center of research and education Chinese Academy of SciencesBeijing 100101China China-Pakistan Joint research Center on earth Sciences Chinese Academy of SciencesIslamabad 45320Pakista

Given Nepal's vulnerability to extreme precipitation(eP),it is imperative to conduct a comprehensive analysis to comprehend the historical trends of such ***,acquiring precise precipitation data for eP remains challenging in mountainous countries like Nepal owing to the scarcity of densely gauged *** limitation impedes the dissemination of knowledge pertaining to eP variability events in *** current research on this topic is deficient for two main reasons:1)there is a lack of studies leveraging recently released high-resolution precipitation products to identify their eP detection capabilities,which further hinders the usability of those products in data-scarce regions like Nepal,and 2)most studies have focused on the characterisation of eP events in Nepal rather than their spatial and temporal *** address these issues,this study evaluated the eP detection capabilities of four high-resolution precipitation product datasets(PPDs)across Nepal from 1985 to *** datasets include the erA5 Land reanalysis data,satellite-based precipitation data(PerSIANN_CCS_CDr and CHIrPS_V2.0)and a merged dataset(TPHiPr).We used various statistical and categorical indices to assess their ability to capture the spatial and temporal variability of eP *** annual eP events were characterised by 11 indices divided into frequency and intensity *** TPHiPr merged dataset offered a robust depiction of monthly precipitation estimates,achieving the highest critical success index,accuracy,probability of detection and a low false alarm ratio for daily precipitation detection of 0.1 mm in ***,the PerSIANN_CCS_CDr dataset exhibited poor *** PPDs showed increasing trends in eP ***,the TPHiPr dataset showcased those trends with fewer errors and stronger correlations for many frequency(r10mm,r20mm and r25mm)and intensity(rX1day,rX5day,PrCPTOT and r99p)*** results indicate that TPHiPr outperformed ot

关键词： extreme precipitation Precipitation product Nepal TPHiPr erA5 land PerSIANN_CCS_CDr CHIrPS_V2.0

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Special Unipotent representations of Simple Linear Lie Groups of Type A

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Acta Mathematica Sinica,english Series 2024年第3期40卷 707-716页

作者： Dan BArBASCH Jia Jun MA Bin Yong SUN Chen bo ZHU department of Mathematics Cornell UniversityIthacaNY 14853USA School of Mathematical Sciences Xiamen UniversityXiamen 361005P.R.China department of Mathematics Xiamen University Malaysia CampusSepangSelangor Darul Ehsan43900Malaysia Institute for Advanced Study in Mathematics&New Cornerstone Science Laboratory Zhejiang UniversityHangzhou 310058P.R.China department of Mathematics National University of Singapore10 Lower Kent Ridge RoadSingapore 119076

Let G be a special linear group over the real,the complex or the quaternion,or a special unitary *** this note,we determine all special unipotent representations of G in the sense of Arthur and Barbasch-Vogan,and show... 详细信息

关键词： Special unipotent representations unitary representations coherent continuation Weyl group representations

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Metal–Organic Framework‑Based Photodetectors

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Nano-Micro Letters 2024年第11期16卷 675-703页

作者： Jin‑Biao Zhang Yi‑bo Tian Zhi‑Gang Gu Jian Zhang State Key Laboratory of Structural Chemistry Structure of MatterFujian Institute of ResearchChinese Academy of SciencesFuzhouFujian 350002People’s Republic of China College of Chemistry and Materials Science Fujian Nornal UniversityFuzhou 350007FujianPeople’s Republic of China Fujian Science&Technology Innovation Laboratory for Optoelectronic Information of China Fuzhou 350108FujianPeople’s Republic of China University of Chinese Academy of Science Beijing 100049People’s Republic of China

The unique and interesting physical and chemical properties of metal–organic framework(MOF)materials have recently attracted extensive attention in a new generation of photoelectric *** this review,we summarized and discussed the research progress on MOF-based *** methods of preparing MOF-based photodetectors and various types of MOF single crystals and thin film as well as MOF composites are introduced in ***,the photodetectors applications for X-ray,ultraviolet and infrared light,biological detectors,and circularly polarized light photodetectors are ***,summaries and challenges are provided for this important research field.

关键词： Metal-organic frameworks Semiconductor Photodetectors

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refiector deformation Measurement and Correction Methodology of Large Antenna Based on Phased Array Feed

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research in Astronomy and Astrophysics 2024年第3期24卷 297-308页

作者： Zan Wang de-Qing Kong Hong-bo Zhang Yan Su Xin-Ying Zhu Cong-Si Wang Yu-Chen Liu Key Laboratory of Lunar and deep Space exploration National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China University of Chinese Academy of Sciences Beijing 100049China Key Laboratory of electronic equipment Structure design Ministry of EducationXidian UniversityXi'an 710071China

To solve the problem of time-consuming measurement and correction of large antennas’reflector deformation,a new microwave holography methodology based on a Phased Array Feed(PAF)is *** from the known expression of receiving signals in microwave holography,the theory of PAF holography is derived through Geometrical *** deformation,as well as pointing deviation and subreflector offset,can be calculated out by applying the derived equations.A measurement and correction system based on PAF holography is depicted,and two kinds of measurement methods are *** proposed measurement methodology is verified by numerical simulation,and its measurement error is *** results indicate that our proposed methodology is feasible,especially for Cassegrain antennas.

关键词： telescopes-methods analytical--methods numerical

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erratum to:Tribological behaviour of Ti_(3)C_(2)T_(x)nano-sheets:Substrate-dependent tribo-chemical reactions

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Friction 2024年第7期12卷 1618-1619页

作者： Alberto rOTA Nicolas BeLLINA bo WANG Andreas rOSeNKrANZ Dipartimento di Scienze Fisiche Informatiche e MatematicheUniversitàdi Modena e Reggio EmiliaModena 41125Italy CNr-Istituto di Nanoscienze Centro S3Modena 41125Italy Centro Interdipartimentale per la ricerca Applicata e i Servizi nel settore della Meccanica Avanzata e della Motoristica Universitàdi Modena e Reggio EmiliaModena 41125Italy Key Laboratory of Marine New Materials and related Technology Zhejiang Key Laboratory of Marine Materials and Protection TechnologyNingbo Institute of Material Technology&EngineeringChinese Academy of SciencesNingbo 315201China department of Chemical engineering Biotechnology and MaterialsUniversity of ChileSantiago 8370456Chile

erratum to Alberto rota,Nicolas Bellina,bo Wang&Andreas *** behaviour of Ti_(3)C_(2)T_(x)nano-sheets:Substratedependent tribo-chemical *** 11(8):1522–1533(2023).

关键词： Friction behaviour chemical

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Neural dynamics for improving optimiser in deep learning with noise considered

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CAAI Transactions on Intelligence Technology 2024年第3期9卷 722-737页

作者： Dan Su Predrag S.Stanimirović Ling bo Han Long Jin School of Information Science and engineering Lanzhou UniversityLanzhouChina Faculty of Sciences and Mathematics University of NišNišSerbia School of electronics and Information engineering Guangdong Ocean UniversityZhanjiangChina

As deep learning evolves,neural network structures become increasingly sophisticated,bringing a series of new optimisation *** example,deep neural networks(DNNs)are vulnerable to a variety of *** neural networks under privacy constraints is a method to alleviate privacy leakage,and one way to do this is to add noise to the ***,the existing optimisers suffer from weak convergence in the presence of increased noise during training,which leads to a low robustness of the *** stabilise and improve the convergence of DNNs,the authors propose a neural dynamics(ND)optimiser,which is inspired by the zeroing neural dynamics originated from zeroing neural *** authors first analyse the relationship be-tween DNNs and control ***,the authors construct the ND optimiser to update network ***,the proposed ND optimiser alleviates the non-convergence problem that may be suffered by adding noise to the gradient from different ***,experiments are conducted on different neural network structures,including resNet18,resNet34,Inception-v3,MobileNet,and long and short-term memory *** results using CIFAr,YouTube Faces,and r8 datasets demonstrate that the ND optimiser improves the accuracy and stability of DNNs under noise-free and noise-polluted *** source code is publicly available at https://***/LongJin-lab/ND.

关键词： deep learning deep neural networks

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Laser-Induced Methanol decomposition for Ultrafast Hydrogen Production

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research 2024年第1期2023卷 131-137页

作者： Weiwei Cao Yinwu Li bo Yan Zhiping Zeng Pu Liu Zhuofeng Ke Guowei Yang State Key Laboratory of Optoelectronic Materials and Technologies Nanotechnology Research CenterSun Yat-sen UniversityGuangzhou 510275P.R.China School of Materials Science and engineering Sun Yat-sen UniversityGuangzhou 510275P.R.China

Methanol(CH_(3)OH)is a liquid hydrogen(H_(2))source that effectively releases H_(2) and is convenient for *** thermocatalytic CH_(3)OH reforming reaction is used to produce H_(2),but this process needs to undergo high reaction temperature(e.g.,200℃)along with a catalyst and a large amount of carbon dioxide(CO_(2))*** photocatalysis and photothermal catalysis under mild conditions are proposed to replace the traditional thermal catalysis to produce H_(2) from CH_(3)OH,they still inevitably produce CO_(2) emissions that are detrimental to carbon ***,we,for the first time,report an ultrafast and highly selective production of H_(2) without any catalysts and no CO_(2) emission from CH_(3)OH by laser bubbling in liquid(LBL)at room temperature and atmospheric pressure.

关键词： catalysis reforming replace

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