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Stepped-up development of accelerator mass spectrometry method for the detection of ^(60)Fe with the HI-13 tandem accelerator

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Nuclear Science and Techniques 2024年第4期35卷 136-143页

作者： Yang Zhang Sheng-Quan Yan Ming He Qing-Zhang Zhao Wen-Hui Zhang Chao-Xin Kan jian-Ming zhou Kang-Ning Li Xiao-Fei Wang jian-Cheng Liu Zhao-hua Peng Zhuo liang Ai-Ling Li jian Zheng Qi-Wen Fan yun-Ju Li You-Bao Wang Zhi-Hong Li Yang-Ping Shen Ding Nan Wei Nan yu-Qiang Zhang Jia-Ying-Hao Li Jun-Wen Tian jiang-Lin Hou Chang-Xin Guo Zhi-Cheng Zhang Ming-Hao Zhu yu-Wen Chen yu-Chen jiang Tao Tian Jin-Long Ma Yi-Hui Liu jing-yu Dong Run-Long Liu Mei-yue-Nan Ma Yong-Shou Chen Wei-Ping Liu Bing Guo China Institute of Atomic Energy P.O.Box 275(10)Beijing 102413China College of Science Southern University of Science and TechnologyShenzhen 518055China School of Physics Xi’an Jiaotong UniversityXi’an 710049China

The Moon provides a unique environment for investigating nearby astrophysical events such as *** samples retain valuable information from these events,via detectable long-lived“fingerprint”radionuclides such as^(60)*** this work,we stepped up the development of an accelerator mass spectrometry(AMS)method for detecting^(60)Fe using the HI-13tandem accelerator at the China Institute of Atomic Energy(CIAE).Since interferences could not be sufficiently removed solely with the existing magnetic systems of the tandem accelerator and the following Q3D magnetic spectrograph,a Wien filter with a maximum voltage of±60 kV and a maximum magnetic field of 0.3 T was installed after the accelerator magnetic systems to lower the detection background for the low abundance nuclide^(60)Fe.A 1μm thick Si_(3)N_(4) foil was installed in front of the Q3D as an energy *** particle detection,a multi-anode gas ionization chamber was mounted at the center of the focal plane of the ***,an^(60)Fe sample with an abundance of 1.125×10^(-10)was used to test the new AMS *** results indicate that^(60)Fe can be clearly distinguished from the isobar^(60)*** sensitivity was assessed to be better than 4.3×10^(-14)based on blank sample measurements lasting 5.8 h,and the sensitivity could,in principle,be expected to be approximately 2.5×10^(-15)when the data were accumulated for 100 h,which is feasible for future lunar sample measurements because the main contaminants were sufficiently separated.

关键词： Accelerator mass spectrometry Wien filter Isobar separation Supernovae Chang'e-5 lunar samples

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A pore-confined strategy for synthesizing CoFe nanoparticles in mesoporous biocarbon matrix as advanced bifunctional oxygen electrocatalyst for zinc-air battery

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Rare Metals 2024年第11期 5757-5768页

作者： Xiang-Jun Zheng Hong-yu Gong Na Zhang Wen-hua shi Qing Sun yu-Hang Qian Li-Kun jiang xue-Cheng Cao Rui-Zhi Yang Chang-zhou yuan School of Environmental and Chemical Engineering Jiangsu University of Science and Technology Advanced Materials Institute Qilu University of Technology (Shandong Academy of Sciences) Automotive Engineering Research Institute Jiangsu University College of Energy Soochow Institute for Energy and Materials InnovationsSoochow University School of Materials Science and Engineering University of Jinan

Designing rational transition-metal/carbon composites with highly dispersed and firmly anchored nanoparticles（NPs） to prevent agglomeration and shedding is crucial for realizing excellent electrocatalytic ***,a biomass pore-confined strategy based on mesoporous willow catkin is explored to obtain uniformly dispersed CoFe NPs in N-doped carbon nanotubes and hollow carbon fibers（CoFe@N-CNTs/HCFs）.The resultant catalyst exhibits enhanced electrocatalytic performance,which affords a half-wave potential of 0.86 V（***） with a limited current density of 6.0 mA·cm-2for oxygen reduction reaction and potential of 1.67 V（***） at 10 mA·cm-2in 0.1 M KOH for oxygen evolution *** applied to rechargeable zinc-air batteries,a maximum power density of 340 mW·cm-2and long-term cyclic durability over 800 h are *** superior bifunctional electrocatalytic activities are ascribed to the biocarbon matrix with abundant mesopores and unobstructed hollow channels,CoFe NPs with high dispersion and controllable nanoscale and the hybrid composite with optimized electronic *** work presents an effective approach for constraining the size and dispersion of NPs in a low-cost biocarbon substrate,offering valuable insights for designing advanced oxygen electrocatalysts.

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Prediction of Renal Function by Urinary Lead and Cadmium - Based on Classification Decision Tree and Logistic Regression Model

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Biomedical and Environmental Sciences 2024年第3期37卷 331-335页

作者： LI Yang WANG Qing Yao TIAN Qing hua AN Qi YANG yu Tong ZHANG Jia Chen LI Shuang jing zhou Han liang yun Fen SHEN Wei Tong MU Li Na LEI Li jian Department of Epidemiology School of Public HealthShanxi Medical UniversityTaiyuan 030001ShanxiChina Department of Epidemiology School of Public HealthShanxi Key Laboratory of Environmental Health Impairment and PreventionNHC Key Laboratory of PneumoconiosisMOE Key Laboratory of Coal Environmental Pathogenicity and PreventionShanxi Medical UniversityTaiyuan 030001ShanxiChina Department of Epidemiology and Environmental Health School of Public Health and Health ProfessionsThe State University of New York at BuffaloBuffaloNYUSA.

It is estimated that chronic kidney disease(CKD)will be the fifth leading cause of death in the world by 2040[1].Early recognition and intervention for kidney damage are *** glomerular filtration rate(eGFR)can be calculated by measuring blood creatinine to evaluate glomerular function,and urinary N-acetyl-β-δ-glucosaminidase(UNAG)level is generally recognized as a marker of renal tubular *** to lead(Pb)and cadmium(Cd)can damage renal function,leading to a decrease in eGFR and an increase in UNAG[2].Both Pb and Cd are easily accumulated in the body and then slowly released by the kidneys and ***,urinary Pb(UPb)and Cd(UCd)levels can be used as biomarkers of exposure[3,4].

关键词： urinary damage slowly

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Genus-specific secondary metabolome in Allokutzneria and Kibdelosporangium

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Synthetic and Systems Biotechnology 2024年第3期9卷 381-390页

作者： Man-jing Ma Wen-Chao yu huai-Ying Sun Bing-Cheng Dong Gang-Ao Hu Zhen-Yi zhou Yi hua Buddha Bahadur Basnet Yan-Lei yu Hong Wang Bin Wei College of Pharmaceutical Science&Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Zhejiang Key Laboratory of GreenLow-Carbonand Efficient Development of Marine Fishery ResourcesZhejiang University of TechnologyHangzhou 310014China Central Department of Biotechnology Trihuvan UniversityKathmanduNepal

Rare actinomycete genera are highly recognized as a promising source of structurally diverse and bioactive natural *** these genera,Allokutzneria and Kibdelosporangium are two phylogenetically closely related and have been reported to encode some valuable biosynthetic enzymes and secondary ***,there is currently no relevant systematic research available to outline the linkage of genomic and metabolomics for specific secondary metabolites in these two promising *** this study,we first investi-gated the genus-specific secondary metabolic potential in Allokutzneria and Kibdelosporangium by comparing the diversity and novelty of their secondary metabolite biosynthetic gene clusters(BGCs).The specific secondary metabolites produced by two representative strains of these genera were comprehensively investigated using untargeted metabolomics *** findings unveiled that the majority(95.4%)of the gene cluster families(GCFs)encoded by Allokutzneria and Kibdelosporangium were genus-specific,including NRPS GCFs encoding *** untargeted metabolomics analysis revealed that the metabolic profiles of two representative strains exhibit extensive specificity,with the culture medium having a big impact on the metabolic ***,an MS-cluster featuring a series of hydroxamate-type siderophores was identified from Allokutzneria albata JCM 9917,with two of them,including a novel one(N-deoxy arthrobactin A),being experimentally *** present study offers valuable insights for the targeted discovery of genus-specific natural products from microorganisms.

关键词： Genus-specific secondary metabolism Allokutzneria Kibdelosporangium Genome mining Untargeted metabolomics Siderophore

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Assessing target optical camouflage effects using brain functional networks:A feasibility study

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Defence Technology（防务技术） 2024年第4期34卷 69-77页

作者： zhou yu Li xue Weidong Xu Jun Liu Qi Jia jianghua Hu Jidong Wu National Key Laboratory of Lightning Protection and Electromagnetic Camouflage Army Engineering University Nanjing 210007JiangsuChina Unit 31608 of PLA Xiamen 361000FujianChina School of Biological Sciences&Medical Engineering Southeast UniversityNanjing 210096JiangsuChina

Brain functional networks model the brain's ability to exchange information across different regions,aiding in the understanding of the cognitive process of human visual attention during target searching,thereby contributing to the advancement of camouflage *** this study,images with various camouflage effects were presented to observers to generate electroencephalography(EEG)signals,which were then used to construct a brain functional *** topological parameters of the network were subsequently extracted and input into a machine learning model for *** results indicate that most of the classifiers achieved accuracy rates exceeding 70%.Specifically,the Logistic algorithm achieved an accuracy of 81.67%.Therefore,it is possible to predict target camouflage effectiveness with high accuracy without the need to calculate discovery *** proposed method fully considers the aspects of human visual and cognitive processes,overcomes the subjectivity of human interpretation,and achieves stable and reliable accuracy.

关键词： Camouflage effect evaluation Electroencephalography(EEG) Brain functional networks Machine learning

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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 (P1) in clinic systolic blood 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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Hollow Multishelled Structure: Synthesis Chemistry and Application

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Chemical Research in Chinese Universities 2024年第3期40卷 346-393页

作者： MAO Dan WANG Chao LI Wei zhou liang LIU jian ZHENG Zjian ZHAO Yong CAO An-min WANG Shutao huaNG Jiaxing HUO Fengwei CHEN Hongyu MAI Liqiang yu Ranbo WANG Lianzhou LU yunfeng yu Chengzhong YANG Qihua YANG Zhenzhong ZENG hua Chun ZHAO Hujun TANG Zhiyong ZHAO Dongyuan WANG Dan State Key Laboratory of Biochemical Engineering Institute of Process EngineeringChineseAcademy of SciencesBeijing 100190P.R.China Key Laboratory of Biopharmaceutical Preparation and Delivery Chinese Academy of SciencesBejing 100190P.R.China School of Fashion and Textiles The Hong Kong Polytechnic UniversityHong Kong SARP.R.China Department of Chemistry Fudan UniversityShanghai 200433P.R.China State Key Laboratory of Advanced Technology for Materials Synthesis and Processing Wuhan University of TechnologyWuhan 430070P.R.China State Key Laboratory of Catalysis Dalian Institute of Chemical PhysicsChinese Academy of SciencesDalian 116023P.R.China School of Chemistry Beihang UniversityBejing 100191P.R.China CAS Key Laboratory of Molecular Nanostructure and Nanotechnology and Beijing National Laboratory for Molecular Sciences Institute of ChemistryChinese Academy of SciencesBeijing 100190P.R.China CAS Key Laboratory of Bio-inspired Materials and Interfacial Science Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190P.R.China School of Engineering Westlake UniversityHangzhou 310024P.R.China School of Flexible Electronics(Future Technologies) Nanjing Tech UniversityNanjing 211816P.R.China School of Science Westlake UniversityHangzhou 310024P.R.China School of Materials Science and Engineering Wuhan University of TechnologyWuhan 430070P.R.China School of Metallurgical and Ecological Engineering University of Science and Technology BeijingBeijing 100083P.R.China School of Chemical Engineering and Australian Institute for Bioengineering and Nanotechnology The University of QueenslandBrisbaneQueensland 4072Australia College of Life Science and Technology Bejing University of Chemical TechnologyBejing 100029P.R.China School of Chemistry and Molecular Engineering East China Normal UniversityShanghai 200241P.R.China College of Life Sciences Zhejiang Normal UniversityJinhua 321004P.R.China Department of Chemical Engineering Tsinghua UniversityBeijing 100

Hollow multishelled structure(HoMS),a promising and complex multifunctional structural system,features at least two shells that are separated by internal *** unique structure endows it with numerous advantages including low density,high loading capacity,large specific surface area,facilitated mass transport,and multiple spatial confinement *** the past twenty years,benefiting from the booming development of synthesis methods,various HoMS materials have been prepared and show promising applications in diverse areas.

关键词： Hollow multishelled structure Synthesis chemistry Energy storage Catalysis Electromagnetic wave absorption Drug delivery Sensor

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Insights into photocatalytic mechanism over a novel Cu_(2)WS_(4)/MoS_(2) S-scheme heterojunction

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Rare Metals 2024年第7期43卷 3118-3133页

作者： Wei Zhao Ji-Hui Cao Jun-Jie Liao yun Liu Xiao-Jun Zeng Jun-yu Shen xue-Kun Hong Yang Guo He-hua Zeng Ya-Zi Liu School of Materials Engineering Jiangsu Key Laboratory of Advanced Functional MaterialsSchool of Electronic and Information EngineeringChangshu Institute of TechnologyChangshu215500China School of Chemistry and Chemical Engineering Changji UniversityChangji 831100China State Environmental Protection Key Laboratory of Soil Environmental Management and Pollution Control Ministry of Ecology and EnvironmentNanjing Institute of Environmental SciencesNanjing 210023China School of Environment Jiangsu Engineering Lab of Water and Soil Eco-RemediationNanjing Normal UniversityNanjing 210023China Department of Chemical Engineering Curtin UniversityPerthWA6845Australia

A novel efficient Cu_(2)WS_(4)/MoS_(2) step-scheme(S-scheme)heterojunction photocatalyst was constructed for the first time and applied in the removal of environmental *** the as-prepared photocatalysts,the Cu_(2)WS_(4)/MoS_(2)-8%heterojunc tion photoc atalyst demonstrates the optimal photocatalytic performance,with the catalytic oxidation efficiency of tetracycline(TC)and the catalytic reduction efficiency of Cr^(6+)reaching 93.3%and 82.1%,*** excellent catalytic properties of Cu_(2)WS_(4)/MoS_(2) heterojunction photocatalysts are attributed to the effective separation pathways of charges and the presence of S-scheme heterojunctions,together with stronger redox *** is speculated that the photogenerated carrier migration path of the Cu_(2)WS_(4)/MoS_(2) catalyst follows the typical S-scheme photocatalytic mechanism,which is verified by the in-depth experimental study and simulated calculations including the electron paramagnetic resonance(EPR)analysis,free radical quenching experiments,charge density distribution,and simulated built-in electric field formation at the interface,which acts as driving force to promote the separation of photoinduced electrons and ***,the photocatalytic mechanism of S-scheme photogenerated carrier migration for the Cu_(2)WS_(4)/MoS_(2) catalyst is revealed based on the systematic experimental techniques and simulated calculations,accounting for its superior photocatalytic oxidation and reduction *** study provides inspiring implications to develop high-efficient S-scheme photocatalytic systems for versatile applications in solarenergy conversion.

关键词： Cu_(2)WS_(4)/MoS_(2) S-scheme Heterojunction Photocatalysis

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Experiment and modelling of texture and sliding direction dependence on finger friction behavior

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Friction 2024年第9期12卷 1955-1968页

作者： yuanzhe LI xue zhou Pengpeng BAI Zhonghuan XIANG Yonggang MENG Liran MA yu TIAN State Key Laboratory of Tribology in Advanced Equipment School of Mechanical EngineeringTsinghua UniversityBeijing 100084China

Humans rely on their fingers to sense and interact with external *** the tribological behavior between finger skin and object surface is crucial for various fields,including tactile perception,product appearance design,and electronic skin *** describing finger frictional behavior is always challenging,given the complex structure of the *** this study,the texture and sliding direction dependence of finger skin friction was quantified based on explicit mathematic *** proposed double-layer model of finger skin effectively described the nonlinear elastic response of skin and predicted the scaling-law of effective elastic modulus with contact ***,the skin friction model on textured surface considering adhesion and deformation factors was *** revealed that adhesive term dominated finger friction behavior in daily life,and suggested that object texture size mainly influenced friction-induced vibrations rather than the average friction *** with digital image correlation(DIC)technique,the effect of sliding direction on finger friction was *** was found that the anisotropy in finger friction was governed by the finger’s ratchet pawl structure,which also contributes to enhanced stick-slip vibrations in the distal sliding *** proposed friction models can offer valuable insights into the underlying mechanism of skin friction under various operating conditions,and can provide quantitative guidance for effectively encoding friction into haptics.

关键词： finger friction tactile perception tribological model textured surface sliding direction

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WNT5A Regulated by miR154-5p is Associated with Angiopoiesis and Invasion of Placental Site Trophoblastic Tumor (PSTT)

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Biomedical and Environmental Sciences 2024年第4期37卷 423-427页

作者： ZHANG Sai CHEN Zhi Xian ZHANG Mo DU Yan zhou Jia Yi WU jing yu Yin hua CAO Qi ZHAO Hong Bo Obstetrics and Gynecology Hospital Fudan UniversityShanghai 200011China Shanghai Key Laboratory of Female Reproductive Endocrine Related Diseases Shanghai 200011China

Placental site trophoblastic tumor(PSTT),a rare gestational trophoblastic neoplasm(GTN),exhibits slow growth,late-onset metastasis,and chemotherapy insensitivity[1,2].The invasive capacity of trophoblasts induces angiogenesis in PSTT,yet the specific mechanism remains unclear[3].PSTT is typically resistant to chemotherapy and hysterectomy stands as the primary therapeutic choice for patients with an overall cure rate of approximately 75%-80%[4,5].Therefore,investigating the precise emergence and progression of PSTT is crucial,aiming to identify novel targets for diagnosis and therapy.

关键词： chemotherapy diagnosis metastasis

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