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The Bright Single Pulse Emission from PSR B1133+16

Research in Astronomy and Astrophysics 2024年第4期24卷 253-261页

作者： Jun Tan Zhi-Gang wen Zhen Wang Xue-Feng duan Hong-Guang Wang Na Wang Vishal Gajjar jian-Ping Yuan Rai Yuen wen-Ming Yan jian-Ling Chen Wei Han Hui Wang Cheng-Bing Lyu Ai-Jun Dong Maths and Information Technology School Yuncheng UniversityYuncheng 044000China Xinjiang Astronomical Observatory Chinese Academy of SciencesUrumqi 830011China Xinjiang Key Laboratory of Radio Astrophysics Urumqi 830011China School of Physics and Materials Science Guangzhou UniversityGuangzhou 510006China Space Science Laboratory University of CaliforniaBerkeley 94710USA Department of Physics and Electronic Engineering Yuncheng UniversityYuncheng 044000China School of Physics and Electronic Science Guizhou Normal UniversityGuiyang 550025China

We have conducted a comprehensive investigation into the bright single pulse emission from PSR B1133+16using the Giant Metrewave Radio *** time resolution data(61μs)were obtained at a center frequency of 322 MHz with a bandwidth of 32 MHz over a continuous observation period of 7.45 hr.A total of 1082 bright pulses were sporadically detected with peak flux densities ranging from 10 to 23 times stronger than the average pulse ***,no giant pulse-like emission with a relative pulse energy larger than 10 and extremely short duration was detected,indicating that these bright pulses cannot be categorized as giant pulse *** majority of these bright pulses are concentrated in pulse phases at both the leading and trailing windows of the average pulse profile,with an occurrence ratio of approximately *** pulse energy distribution for all individual pulses can be described by a combination of two Gaussian components and a cutoff power-law with an index of α=-*** updated nulling fraction of 15.35%±0.45% was determined from the energy *** emission of individual pulses follows a log-normal distribution in peak flux density *** is imperative that regular phase drifting in bright pulse sequence is identified in both the leading and trailing components for the first *** physical mechanisms are discussed in detail to provide insights into these observations.

关键词： (stars:)pulsars:general (stars:)pulsars:individual(PSR B1133+16) methods:observational methods:data analysis

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Advocating for the implementation of SonoVue microbubbles as pressure sensors: a call to action for clinical noninvasive pressure estimation

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Hepatobiliary Surgery and Nutrition 2024年第4期13卷 690-695页

作者： Ao wen Lingxiao Yang Tao Lv Huayu Yang Fei Li Yilei Mao Gang Xu jia-Yin Yang Liver Transplant Center Organ Transplant CenterWest China Hospital of Sichuan UniversityChengduChina Laboratory of Liver Transplantation Key Laboratory of Transplant Engineering and ImmunologyNational Health Commission(NHC)West China Hospital of Sichuan UniversityChengduChina West China Hospital West China School of MedicineSichuan UniversityChengduChina Department of Liver Surgery Peking Union Medical College(PUMC)HospitalPUMC and Chinese Academy of Medical SciencesBeijingChina Paul C.Lauterbur Research Center for Biomedical Imaging Shenzhen Institutes of Advanced TechnologyChinese Academy of SciencesShenzhenChina

Pressure measurement within the body is of pivotal significance in the diagnosis of vascular and organ-related diseases associated with hydrostatic *** present,the most commonly used clinical method is to insert a catheter along with a pressure sensor and then guide it to the area of interest through vessels such as central venous pressure(CVP).However,the presence of sensors within the vessel of interest will inevitably cause alterations to the circulation and thus affect blood ***,the use of invasive methods does not allow monitoring of every area inside the body.

关键词： SonoVue microbubbles pressure estimation noninvasive

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Combining lymph node ratio to develop prognostic models for postoperative gastric neuroendocrine neoplasm patients

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World Journal of Gastrointestinal Oncology 2024年第8期16卷 3507-3520页

作者： wen Liu Hong-Yu Wu jia-Xi Lin Shu-Ting Qu Yi-Jie Gu Jin-Zhou Zhu Chun-Fang Xu Department of Gastroenterology Changzhou Hospital of Traditional Chinese MedicineChangzhou 213000Jiangsu ProvinceChina Department of Gastroenterology The First Affiliated Hospital of Soochow UniversitySuzhou 215006Jiangsu ProvinceChina Department of Gastroenterology Suzhou Ninth Hospital Affiliated to Soochow UniversitySuzhou 215200Jiangsu ProvinceChina

BACKGROUND Lymph node ratio(LNR)was demonstrated to play a crucial role in the prognosis of many ***,research concerning the prognostic value of LNR in postoperative gastric neuroendocrine neoplasm(NEN)patients was *** To explore the prognostic value of LNR in postoperative gastric NEN patients and to combine LNR to develop prognostic *** A total of 286 patients from the Surveillance,Epidemiology,and End Results database were divided into the training set and validation set at a ratio of 8:2.92 patients from the First Affiliated Hospital of Soochow University in China were designated as a test *** regression analysis was used to explore the relationship between LNR and disease-specific survival(DSS)of gastric NEN *** survival forest(RSF)algorithm and Cox proportional hazards(CoxPH)analysis were applied to develop models to predict DSS respectively,and compared with the 8th edition American Joint Committee on Cancer(AJCC)tumornode-metastasis(TNM)*** Multivariate analyses indicated that LNR was an independent prognostic factor for postoperative gastric NEN patients and a higher LNR was accompanied by a higher risk of *** RSF model exhibited the best performance in predicting DSS,with the C-index in the test set being 0.769[95%confidence interval(CI):0.691-0.846]outperforming the CoxPH model(0.744,95%CI:0.665-0.822)and the 8th edition AJCC TNM staging(0.723,95%CI:0.613-0.833).The calibration curves and decision curve analysis(DCA)demonstrated the RSF model had good calibration and clinical ***,the RSF model could perform risk stratification and individual prognosis prediction *** A higher LNR indicated a lower DSS in postoperative gastric NEN *** RSF model outperformed the CoxPH model and the 8th edition AJCC TNM staging in the test set,showing potential in clinical practice.

关键词： Gastric neuroendocrine neoplasm Lymph node ratio Disease-specific survival Random survival forest Predictive model

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Epidemic Characteristics and Spatio-Temporal Patterns of HFRS in Qingdao City,China,2010-2022

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Biomedical and Environmental Sciences 2024年第9期37卷 1015-1029页

作者： Ying Li Runze Lu Liyan Dong Litao Sun Zongyi Zhang Yating Zhao Qing duan Lijie Zhang Fachun jiang Jing jia Huilai Ma Chinese Field Epidemiology Training Program Chinese Center for Disease Control and PreventionBeijing 100050China National Institute for Viral Disease Control and Prevention Chinese Center for Disease Control and PreventionBeijing 102206China Qingdao Municipal Center for Disease Control and Prevention Qingdao 266024ShandongChina jiaozhou Center for Disease Control and Prevention Qingdao 266399ShandongChina Institute for Infectious Disease Control and Prevention Shandong Center for Disease Control and PreventionJinan 250013ShandongChina Office of Epidemiology(Technical Guidance Office for Patriotic Health Work) Chinese Center for Disease Control and PreventionBeijing 102206China

Objective This study investigated the epidemic characteristics and spatio-temporal dynamics of hemorrhagic fever with renal syndrome(HFRS)in Qingdao City,*** Information was collected on HFRS cases in Qingdao City from 2010 to *** epidemiologic,seasonal decomposition,spatial autocorrelation,and spatio-temporal cluster analyses were *** A total of 2,220 patients with HFRS were reported over the study period,with an average annual incidence of 1.89/100,000 and a case fatality rate of 2.52%.The male:female ratio was 2.8:1.75.3%of patients were aged between 16 and 60 years old,75.3%of patients were farmers,and 11.6%had both“three red”and“three pain”*** HFRS epidemic showed two-peak seasonality:the primary fall-winter peak and the minor spring *** HFRS epidemic presented highly spatially heterogeneous,street/township-level hot spots that were mostly distributed in Huangdao,Pingdu,and *** spatio-temporal cluster analysis revealed three cluster areas in Qingdao City that were located in the south of Huangdao District during the fall-winter *** The distribution of HFRS in Qingdao exhibited periodic,seasonal,and regional characteristics,with high spatial clustering *** typical symptoms of“three red”and“three pain”in patients with HFRS were not obvious.

关键词： Hemorrhagic fever with renal syndrome Epidemic characteristics Spatio-temporal distribution

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Nucleus++: a new tool bridging Ame and Nubase for advancing nuclear data analysis

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Nuclear Science and Techniques 2024年第10期35卷 1-6页

作者： Shi, Jin-Yang Huang, wen-jia Wang, Meng Yan, Xin-Liang Lunney, David Audi, Georges Kondev, Filip G. Naimi, Sarah Chakma, Rikel School of Nuclear Science and Technology University of Chinese Academy of Sciences Beijing 100049 China CAS Key Laboratory of High Precision Nuclear Spectroscopy Institute of Modern Physics Chinese Academy of Sciences Lanzhou 730000 China Advanced Energy Science and Technology Guangdong Laboratory Huizhou 516007 China Université Paris-Saclay CNRS/IN2P3 IJCLab Orsay 91405 France Physics Division Argonne National Laboratory Lemont IL 60439 United States

The newly developed software, Nucleus++, is an advanced tool for displaying basic nuclear physics properties from Nubase and integrating comprehensive mass information for each nuclide from Atomic Mass Evaluation. Additionally, it allows users to compare experimental nuclear masses with predictions from different mass models. Building on the success and learning experiences of its predecessor, Nucleus, this enhanced tool introduces improved functionality and compatibility. With its user-friendly interface, Nucleus++ was designed as a valuable tool for scholars and practitioners in the field of nuclear science. This article offers an in-depth description of Nucleus++, highlighting its main features and anticipated impacts on nuclear science research. © The Author(s), under exclusive licence to China Science Publishing & Media Ltd. (Science Press), Shanghai Institute of Applied Physics, the Chinese Academy of Sciences, Chinese Nuclear Society 2024.

关键词： Atomic physics

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Feasibility of compacted attapulgite/diatomite amended clayey soils as gas barrier materials

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Journal of Rock Mechanics and Geotechnical Engineering 2024年第9期16卷 3707-3717页

作者： Heng Zhuang Wei-Yi Xia jia-Ming wen Min Wang Ying-Zhen Li Ning-Jun jiang Konstantin S.Rodygin Yan-Jun Du jiangsu Key Laboratory of Low Carbon and Sustainable Geotechnical Engineering Institute of Geotechnical EngineeringSoutheast UniversityNanjing211189China jiangsu Province Ecology and Environment Protection Engineering Research Center of Groundwater Pollution Prevention and Control Jiangsu Environmental Engineering Technology Co.Ltd.Nanjing210036China Zijin(Changsha)Engineering Technology Co. Ltd.Changsha410006China Institute of Chemistry Saint Petersburg State UniversityStary Petergof198504Russia

Compacted clay liners are extensively used as barriers to control the upward diffusion of vapors of volatile or semi-volatile organic contaminants released from unsaturated contaminated soils at industrycontaminated *** study aimed to investigate the gas diffusion barrier performance of compacted clayey soils amended with three agents including attapulgite and diatomite individually,and attapulgite/diatomite *** properties including water retention,volumetric shrinkage,gas diffusion,and unconfined compressive strength were evaluated through a series of laboratory tests of amended compacted clayey *** results demonstrate that the decrease in volume proportions of interaggregate pores leads to an increase in unconfined compressive strength(qu).Both hydrophilic groups and microstructures of attapulgite and diatomite result in an increase in water retention percent(Wt)of compacted clayey soil specimens after amendment regardless of the type of agent or initial water content(w0).Furthermore,the ratio of the gas diffusion coefficient(De)to the gas diffusion coefficient in the air(Da)was significantly reduced owing to a decrease in volume proportions of inter-aggregate pores,hydrophilic group,and microstructures of attapulgite and *** electron microscope analyses revealed that rod-shaped attapulgite filled the inter-aggregate pores formed by clay particles,whereas the disc-shaped diatomite particles,characterized by micropores,failed to obstruct the interaggregate pores due to their larger particle *** intrusion porosimetry(MIP)analyses showed a reduction in pore volume in the inter-aggregate pores,leading to a reduction in the total pore volume for both the attapulgite and attapulgite/diatomite mixture amended clays,which is in accordance with the scanning electron microscope(SEM)*** findings are pertinent to the practical application of compacted clay liners as gas barriers against the upward migration of volatile or s

关键词： Compacted clay liner Attapulgite/diatomite mixture Diffusion barrier Water retention

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数字新基建、要素配置效率与中国式农业农村现代化

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管理现代化 2024年第2期44卷 28-37页

作者：段洪成武文柳佳哈尔滨金融学院会计学院黑龙江哈尔滨150030

基于2012—2021年中国30个省份面板数据,实证检验数字新基建对中国式农业农村现代化的影响及作用机制。研究结果表明:数字新基建对中国式农业农村现代化发展存在显著促进作用,且这一作用在东部地区、非粮食主产区和高科技投入地区更显... 详细信息

基于2012—2021年中国30个省份面板数据,实证检验数字新基建对中国式农业农村现代化的影响及作用机制。研究结果表明:数字新基建对中国式农业农村现代化发展存在显著促进作用,且这一作用在东部地区、非粮食主产区和高科技投入地区更显著。机制分析发现,要素配置效率在数字新基建驱动中国式农业农村现代化过程中起到关键传导作用。门槛分析显示,在跨过数字新基建的单门槛和要素配置效率的双门槛后,数字新基建对中国式农业农村现代化的推动作用更显著。空间分析发现,数字新基建对中国式农业农村现代化的影响具有正向空间溢出效应。基于此,提出完善数字新基建布局、提高生产要素配置效率、实施区域特色发展战略的建议,以期为扎实推进中国式农业农村现代化发展提供参鉴。

关键词：数字新基建要素配置效率中国式农业农村现代化空间溢出效应

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Charge regulation by ferromagnetic metal/LiF spin-polarized interface for high-performance Li metal anodes

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Rare Metals 2024年第3期43卷 995-1005页

作者： Ming-Yang Feng Shuang Zhou Yi-Fang Zhang Ya-Ping Wang Chun-Yan Fu jian-wen Li Yuan-Lang Wan Zhi-jia Zhang Yong jiang An-Qiang Pan State Key Laboratory of Powder Metallurgy School of Materials Science and EngineeringCentral South UniversityChangsha410083China State Key Laboratory of Separation Membranes and Membrane Processes Tianjin Key Laboratory of Advanced Fibers and Energy StorageSchool of Material Science and EngineeringTiangong UniversityTianjin300387China School of Materials Science and Engineering Hebei University of TechnologyTianjin300130China

The interfacial characteristics of the Li metal anode(LMA)play a crucial role in its overall *** various materials being applied to modify the interface,a comprehensive understanding of their specific mechanisms remains to be ***,we have prepared carbon cloth(CC)frameworks with their surfaces modified using ferromagnetic metal/LiF heterogeneous films(T^(M)-LiF-CC)as the substrate for LMA,which exhibit superior electrochemical *** ferromagnetic Co as a representative example,our study demonstrates that the enhanced performance of Co-LiF-CC,compared to bare CC,is attributed to the spinpolarized interface contributed by the Co/LiF *** and LiF play individual roles in redistributing electrons and Li^(+)to promote homogeneous Li *** nanoparticles play a crucial role in generating strong surface capacitance by storing electrons in spin-split bands,while LiF,with low surface diffusion barriers,ensures fast transportation of Li^(+).The Co-LiF-CC@Li electrodes deliver long lives of 7400 and 3600 h at 1 and 2 mA·cm^(-2)in symmetric cells,respectively;moreover,they enable full batteries with high and durable capacities,particularly when the N/P ratios are low(3.3 or even 1.7).

关键词： Lithium metal anode Interfacial charge Ferromagnetic metal Lithium fluoride Spin polarization

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Enriched electrophilic oxygen species facilitate acidic oxygen evolution on Ru-Mo binary oxide catalysts

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Nano Research 2024年第3期17卷 1165-1172页

作者： Yaya Wang Yunzhou wen Yumeng Cheng Xinhong Chen Mengjiao Zhuansun Tongbao Wang Jun Li Debora Meira Huarui Sun Jun Wei jia Zhou Yuhang Wang Sisi He Shenzhen Key Laboratory of Flexible Printed Electronics Technology Harbin Institute of Technology(Shenzhen)University TownShenzhen 518055China School of Science Harbin Institute of Technology(Shenzhen)University TownShenzhen 518055China Institute of Functional Nano&Soft Materials(FUNSOM) Jiangsu Key Laboratory of Advanced Negative Carbon TechnologiesSoochow UniversitySuzhou 215123China Frontiers Science Center for Transformative Molecules Shanghai Jiao Tong UniversityShanghai 200240China Science Division Canadian Light SourceSaskatoonSKS7N 2V3Canada Photon Science Division Argonne National LaboratoryLemontIL60439USA School of Materials Science and Engineering Harbin Institute of Technology(Shenzhen)University TownShenzhen 518055China

The polymer electrolyte membrane(PEM)electrolyzers are burdened with costly iridium(Ir)-based catalysts and high operation overpotentials for the oxygen evolution reaction(OER).The development of earth-abundant,highly active,and durable electrocatalysts to replace Ir is a critical step in reducing the cost of green hydrogen *** we develop a Ru5Mo4Ox binary oxide catalyst that exhibits high activity and stability in acidic *** electron-withdrawing property of Mo enriches the electrophilic surface oxygen species,which promotes acidic OER to proceed via the adsorbate evolution *** a result,we achieve a 189 mV overpotential at 10 mA·cm^(-2) and a Tafel slope of 48.8 mV·dec^(-1).Our catalyst demonstrates a substantial 18-fold increase in intrinsic activity,as evaluated by turnover frequency,compared to commercially available RuO_(2) and IrO_(2) ***,we report a stable OER operation at 10 mA·cm^(-2) for 100 h with a low degradation rate of 2.05 mV·h^(-1).

关键词： electrocatalysis oxygen evolution reaction(OER) ruthenium(Ru)-based oxide molybdenum electrophilic oxygen

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Activation of endogenous neurogenesis and angiogenesis by basic fibroblast growth factor-chitosan gel in an adult rat model of ischemic stroke

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Neural Regeneration Research 2024年第2期19卷 409-415页

作者： Hongmei duan Shulun Li Peng Hao Fei Hao wen Zhao Yudan Gao Hui Qiao Yiming Gu Yang Lv Xinjie Bao Kin Chiu Kwok-Fai So Zhaoyang Yang Xiaoguang Li Department of Neurobiology School of Basic Medical SciencesCapital Medical UniversityBeijingChina Beijing Key Laboratory for Biomaterials and Neural Regeneration School of Engineering MedicineBeihang UniversityBeijingChina Department of Epidemiology and Statistics School of Public Health and ManagementNingxia Medical UniversityYinchuanNingxia Hui Autonomous RegionChina Department of Physical Education Capital University of Economics and BusinessmBeijingChina Department of Neurosurgery Peking Union Medical College HospitalChinese Academy of Medical Sciences and Peking Union Medical CollegeBeijingChina Department of Psychology State Key Lab of Brain and Cognitive SciencesThe University of Hong KongHong Kong Special Administration RegionChina Guangdong-Hongkong-Macao Institute of CNS Regeneration Ministry of Education CNS Regeneration Collaborative Joint LaboratoryJinan UniversityGuangzhouGuangdong ProvinceChina Bioland Laboratory(Guangzhou Regenerative Medicine and Health Guangdong Laboratory) GuangzhouGuangdong ProvinceChina Department of Ophthalmology and State Key Laboratory of Brain and Cognitive Sciences The University of Hong KongHong Kong Special Administration RegionChina Center for Brain Science and Brain-Inspired Intelligence Guangdong-Hong Kong-Macao Greater Bay AreaGuangzhouGuangdong ProvinceChina Co-innovation Center of Neuroregeneration Nantong UniversityNantongJiangsu ProvinceChina Department of Biomedical Engineering School of Biological Science and Medical EngineeringBeihang UniversityBeijingChina

Attempts have been made to use cell transplantation and biomaterials to promote cell proliferation,differentiation,migration,and survival,as well as angiogenesis,in the context of brain ***,whether bioactive materials can repair the damage caused by ischemic stroke by activating endogenous neurogenesis and angiogenesis is still *** this study,we applied chitosan gel loaded with basic fibroblast growth factor to the stroke cavity 7 days after ischemic stroke in *** gel slowly released basic fibroblast growth factor,which improved the local microenvironment,activated endogenous neural stem/progenitor cells,and recruited these cells to migrate toward the penumbra and stroke cavity and subsequently differentiate into neurons,while enhancing angiogenesis in the penumbra and stroke cavity and ultimately leading to partial functional *** study revealed the mechanism by which bioactive materials repair ischemic strokes,thus providing a new strategy for the clinical application of bioactive materials in the treatment of ischemic stroke.

关键词： adult endogenous neurogenesis angiogenesis basic fibroblast growth factor-chitosan gel chitosan functional recovery ischemic stroke neural stem cell newborn neuron

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