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Highly Sensitive Ammonia Gas Sensors at Room Temperature Based on the Catalytic Mechanism of N,C Coordinated Ni Single-Atom Active Center

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Nano-Micro Letters 2024年第12期16卷 515-531页

作者： Wenjing quan Jia Shi Min Zeng Wen Lv Xiyu chen chao Fan Yongwei Zhang Zhou Liu Xiaolu Huang Jianhua yang Nantao Hu Tao Wang Zhi yang National Key Laboratory of Advanced Micro and Nano Manufacture Technology Shanghai Jiao Tong UniversityShanghai 200240People’s Republic of China Department of Micro/Nano Electronics School of Electronic Information and Electrical EngineeringShanghai Jiao Tong UniversityShanghai 200240People’s Republic of China Shanghai Key Laboratory of Intelligent Sensing and Detection Technology School of Mechanical and Power EngineeringEast China University of Science and TechnologyShanghai 200237People’s Republic of China

Significant challenges are posed by the limitations of gas sensing mechanisms for trace-level detection of ammonia(NH3).In this study,we propose to exploit single-atom catalytic activation and targeted adsorption properties to achieve highly sensitive and selective NH3 gas ***,Ni singleatom active sites based on N,C coordination(Ni-N-C)were interfacially confined on the surface of two-dimensional(2D)MXene nanosheets(Ni-N-C/Ti_(3)C_(2)Tx),and a fully flexible gas sensor(MNPE-Ni-N-C/Ti_(3)C_(2)Tx)was *** sensor demonstrates a remarkable response value to 5 ppm NH3(27.3%),excellent selectivity for NH3,and a low theoretical detection limit of 12.1 *** analysis by density functional calculation reveals that the Ni single-atom center with N,C coordination exhibits specific targeted adsorption properties for ***,its catalytic activation effect effectively reduces the Gibbs free energy of the sensing elemental reaction,while its electronic structure promotes the spill-over effect of reactive oxygen species at the gas-solid *** sensor has a dual-channel sensing mechanism of both chemical and electronic sensitization,which facilitates efficient electron transfer to the 2D MXene conductive network,resulting in the formation of the NH3 gas molecule sensing ***,the passivation of MXene edge defects by a conjugated hydrogen bond network enhances the long-term stability of MXene-based electrodes under high humidity *** work achieves highly sensitive room-temperature NH3 gas detection based on the catalytic mechanism of Ni single-atom active center with N,C coordination,which provides a novel gas sensing mechanism for room-temperature trace gas detection research.

关键词： Gas sensor Single atom Catalytic activation Targeted adsorption End-sealing passivation

Review on recent advances of inorganic electrode materials for potassium-ion batteries

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Tungsten 2024年第1期6卷 174-195页

作者： Jian-Zhen Xiong Ze-cheng yang Xin-Liang Guo Xi-Ying Wang chao Geng Zong-Fu Sun An-Yong Xiao quan-chao Zhuang Ya-Xin chen Zhi-cheng Ju School of Materials Science and Physics China University of Mining and TechnologyXuzhou 221116China

Rechargeable potassium-ion batteries(PIBs)have great potential in the application of electrochemical energy storage devices due to the low cost,the abundant resources and the low standard reduction potential of *** electrode materials are the key factors to determine the electrochemical performance of devices,relevant research is being carried out to build high-performance *** recent years,significant progress has been made in the study of the design of inorganic electrode ***,we review the cathode materials(Prussian blue and its analogues,layered oxides and poly anionic compounds)and the anode materials(antimony-based,selenium-based and bismuth-based compounds).On the basis of previous work,the structural design principles for improving the performance of electrode materials are reasonably *** the same time,the problems that need to be solved in the preparation of electrode materials and the direction of future research and improvement are pointed out.

关键词： Inorganic electrode materials Potassium-ion batteries Cathode materials Anode materials

Chinese herbal medicine for the treatment of endocrine therapyrelated osteoporosis among patients with breast cancer:A systematic review and meta-analysis

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Journal of Traditional Chinese Medical Sciences 2024年第2期11卷 148-164页

作者： Xiaomin quan Hongyang chen Wenyi Wang Yu Gao Xingyue Zhi Xun Li Guanhu yang Donggui Wan chao An Department of Oncology Dongfang Hospital Beijing University of Chinese Medicine100078BeijingChina Department of Oncology China-Japan Friendship Hospital100029BeijingChina Department of Nephrology Beijing University of Chinese Medicine Third Affiliated Hospital100029BeijingChina Center for Evidence-Based Chinese Medicine Beijing University of Chinese Medicine100029BeijingChina Department of Specialty Medicine OHIO UniversityAthensOH 45701USA

Objective To assess the efficacy and safety of combining traditional Chinese medicine(TCM),specifically Chinese herbal medicine(CHM),with Western medicine(WM),compared to WM alone to treat breast cancer endocrine therapy-related osteoporosis(BCET-OP)by *** Thirty-eight randomized controlled trials involving 2170 participants were *** databases were searched for articles published between inception and December *** assessment was performed using the Risk of Bias 2 *** Significant increases were observed in the TCM-WM group in lumbar vertebrae bone mineral density(BMD)(P<.001,mean difference(MD)=0.07,95%confidence interval(CI):0.06 to 0.08),lumbar vertebrae T-score(P=.0005,MD=0.21,95%CI:0.09 to 0.33)and collum femoris BMD(P=.01,MD=0.10,95%CI:0.02 to 0.19).No significant difference was observed between the groups in the collum femoris T-score and estradiol *** gla-protein levels were significantly increased in the TCM-WM group(P=.0002,MD=0.52,95%CI:0.25 to 0.79).Beta-CrossLaps decreased significantly in the TCM-WM group(P=.0008,MD=−0.10,95%CI:−0.16 to−0.04).No significant difference was observed between the TCM-WM and WM groups in alkaline phosphatase,in procollagen type I N-terminal propeptide,and in the Kupperman *** visual analog score(VAS)was decreased in the TCM-WM group compared to the WM group(P<.001,MD=−1.40,95%CI:−1.94 to−0.87).No significant difference in adverse events was observed between the two *** Combining CHM with WM in patients with BCET-OP significantly improved BMD,T-score,and certain bone turnover markers and reduced the VAS score,indicating potential benefits for bone health and related *** event analysis revealed no differences between the groups,supporting the feasibility of the combination ***,further research,particularly in diverse populations,is required.

关键词： Breast cancer Endocrine therapy Osteoporosis Traditional Chinese medicine Meta-analysis

J-family genes redundantly regulate flowering time and increase yield in soybean

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The Crop Journal 2024年第3期12卷 944-949页

作者： haiyang Li Zheng chen Fan Wang Hongli Xiang Shuangrong Liu Chuanjie Gou chao Fang Liyu chen Tiantian Bu Fanjiang Kong Xiaohui Zhao Baohui Liu Xiaoya Lin Guangdong Key Laboratory of Plant Adaptation and Molecular Design/Guangzhou Key Laboratory of Crop Gene Editing/Innovative Center of Molecular Genetics and Evolution School of Life SciencesGuangzhou UniversityGuangzhou 510006GuangdongChina

Soybean(Glycine max)is a short-day crop whose flowering time is regulated by *** longjuvenile trait extends its vegetative phase and increases yield under short-day *** variation in J,the major locus controlling this trait,modulates flowering *** report that the three J-family genes influence soybean flowering time,with the triple mutant Guangzhou Mammoth-2 flowering late under short days by inhibiting transcription of E1-family genes.J-family genes offer promising allelic combinations for breeding.

关键词： Soybean Flowering time Yield J-family genes

FAST Observations of Four Comets to Search for the Molecular Line Emissions between 1.0 and 1.5 GHz Frequencies

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Research in Astronomy and Astrophysics 2024年第10期24卷 130-140页

作者： Long-Fei chen chao-Wei Tsai Jian-yang Li Bin yang Di Li Yan Duan Chih-Hao Hsia Zhichen Pan Lei Qian Donghui quan Xue-Jian Jiang Xiaohu Li Ruining Zhao Pei Zuo School of Physics and Electronic Science Guizhou Normal UniversityGuiyang 550025China Guizhou Provincial Key Laboratory of Radio Astronomy and Data Processing Guiyang 550025China Research Center for Astronomical Computing Zhejiang LaboratoryHangzhou 311100China National Astronomical Observatories Chinese Academy of SciencesBeijing 100101China Institute for Frontiers in Astronomy and Astrophysics Beijing Normal UniversityBeijing 102206China Key Laboratory of Radio Astronomy and Technology Chinese Academy of SciencesBeijing 100101China School of Atmospheric Sciences Sun Yat-sen UniversityZhuhai 519082China Núcleo de Astronomía Facultad de Ingenieríay CienciasUniversidad Diego PortalesChile Department of Astronomy College of Physics and Electronic EngineeringQilu Normal UniversityJinan 250200China Department of Electronic and Optical Engineering Space Engineering UniversityBeijing 101416China Laboratory for Space Research Faculty of ScienceThe University of Hong KongHong Kong(SAR)China Xinjiang Astronomical Observatory Chinese Academy of SciencesUrumqi 830011China CAS Key Laboratory of Optical Astronomy National Astronomical ObservatoriesChinese Academy of SciencesBeijing 100101China School of Astronomy and Space Sciences University of Chinese Academy of SciencesBeijing 100049China

We used the Five-hundred-meter Aperture Spherical radio Telescope(FAST)to search for the molecular emissions in the L-band between 1.0 and 1.5 GHz toward four comets,C/2020 F3(NEOWISE),C/2020 R4(ATLAS),C/2021 A1(Leonard),and 67P/Churyumov-Gerasimenko during or after their perihelion *** of molecular transition lines fall in this low-frequency range,many attributed to complex organic or prebiotic *** conducted a blind search for the possible molecular lines in this frequency range in those comets and could not identify clear signals of molecular emissions in the *** several molecules have been detected at high frequencies of greater than100 GHz in comets,our results confirm that it is challenging to detect molecular transitions in the L-band frequency *** non-detection of L-band molecular lines in the cometary environment could rule out the possibility of unusually strong lines,which could be caused by the masers or non-LTE *** the line strengths are predicted to be weak,for FAST,using the ultra-wide bandwidth receiver and improving the radio frequency interference environments would enhance the detectability of those molecular transitions at low frequencies in the future.

关键词： astrochemistry ISM:molecules comets:general line:identification

Delayed neurological dysfunction following posterior laminectomy with lateral mass screw fixation:A case report and review of literature

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World Journal of Clinical Cases 2024年第7期12卷 1356-1364页

作者： Rui-Zhong Yan chao chen Chu-Ran Lin Yan-Hui Wei Zhi-Jian Guo Ya-Kun Li quan Zhang He-Yi Shen Hao-Lin Sun Department of Orthopedics Taiyuan Central HospitalTaiyuan 030009Shanxi ProvinceChina Department of Orthopedics Graduate School Shanxi University of Traditional Chinese MedicineTaiyuan 030024Shanxi ProvinceChina Department of Orthopedics Peking University First HospitalBeijing 100034China

BACKGROUND While most complications of cervical surgery are reversible,some,such as symptomatic postoperative spinal epidural hematoma(SEH),which generally occurs within 24 h,are associated with increased morbidity and *** neurological dysfunction is diagnosed in cases when symptoms present>3 d *** to its rarity,the risk factors for delayed neurological dysfunction are ***,this condition can result in irreversible neurological deficits and serious *** this paper,we present a case of postoperative SEH that developed three days after hematoma *** SUMMARY A 68-year-old man with an American Spinal Injury Association(ASIA)grade C injury was admitted to our hospital with neck pain and tetraplegia following a *** C3-C7 posterior laminectomy and the lateral mass screw fixation surgery were performed on the tenth ***,the patient showed no changes in muscle strength or ASIA *** patient experienced neck pain and subcutaneous swelling on the third day postoperatively,his muscle strength decreased,and his ASIA score was grade *** resonance imaging showed hypointense signals on T1 weighted image(T1WI)and T2WI located behind the epidural space,with spinal cord *** surgical intervention for the hematoma was performed 12 h after *** hypoproteinemia and pleural effusion did not improve in the perioperative period,the patient recovered to ASIA grade C on day 30 after surgery,and was transferred to a functional rehabilitation exercise *** This case shows that amelioration of low blood albumin and pleural effusion is an important aspect of the perioperative management of cervical *** to relieve the pressure on the spinal cord should be performed as soon as possible to decrease neurological disabilities.

关键词： Delayed postoperative spinal epidural hematoma Complications Spinal surgery Hypoproteinemia Risk factor Case report

Associations of prenatal exposure to bisphenols with BMI growth trajectories in offspring within the first two years:evidence from a birth cohort study in China

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World Journal of Pediatrics 2024年第7期20卷 701-711页

作者： chao Xiong Kai chen Lu-Li Xu Yi-Ming Zhang Hua Liu Meng-Lan Guo Zhi-Guo Xia Yu-Ji Wang Xiao-Feng Mu Xiao-Xuan Fan Jing-quan chen Yu-Ru Liu Yuan-Yuan Li Wei Xia You-Jie Wang Ai-Fen Zhou Wuhan Children’s Hospital(Wuhan Maternal and Child Healthcare Hospital) Tongji Medical CollegeHuazhong University of Science and TechnologyWuhan430016China Key Laboratory of Environment and Health Ministry of Education and Ministry of Environmental Protectionand State Key Laboratory of Environmental HealthSchool of Public HealthTongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina Department of Maternal and Child Health School of Public HealthTongji Medical CollegeHuazhong University of Science and TechnologyWuhan430030China

Background Prenatal bisphenol exposure has been reported to be associated with lower birth weight and obesity-related indicators in early *** findings warrant an investigation of the relationship between prenatal bisphenol exposure and the dynamic growth of *** study aimed to evaluate the relationship of maternal bisphenol concentration in urine with the body mass index(BMI)growth trajectory of children aged up to two years and to identify the critical exposure *** A total of 826 mother–offspring pairs were recruited from Wuhan Children’s Hospital between November 2013 and March *** urine samples collected during the first,second,and third trimesters were analyzed for bisphenol A(BPA),bisphenol S,and bisphenol F(BPF)*** of length and weight were taken at 0,1,3,6,8,12,18,and 24 ***'s BMI was standardized using the World Health Organization reference,and group-based trajectory modeling was used to identify BMI growth *** associations between prenatal bisphenol exposure and BMI growth trajectory patterns were assessed using multinomial logistic regression *** The BMI growth trajectories of the 826 children were categorized into four patterns:low-stable(n=134,16.2%),low-increasing(n=142,17.2%),moderate-stable(n=350,42.4%),and moderate-increasing(n=200,24.2%).After adjusting for potential confounders,we observed that prenatal exposure to BPA during the second trimester[odds ratio(OR)=2.20,95%confidence interval(CI)=1.09–4.43]and BPF during the third trimester(OR=3.28,95%CI=1.55–6.95)at the highest quartile concentration were associated with an increased likelihood of the low-increasing BMI ***,in the subgroup analysis by infant sex,the positive association between the highest quartile of prenatal average urinary BPF concentration during the whole pregnancy and the low-increasing BMI trajectory was found only in girls(OR=2.82,95%CI=1.04–7.68).Conclus

关键词： Birth cohort study Bisphenol A Bisphenol S Bisphenol F Body mass index trajectory Prenatal exposure

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

矿用硬岩巷道机械化掘进破岩形式研究现状及展望

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煤炭科学技术 2024年第S1期52卷 259-268页

作者：李潮鲁义强陈召易海洋王明耀华北科技学院建筑工程学院河北廊坊065201 中铁工程装备集团有限公司河南郑州450000 同济大学土木工程学院上海200092 河南理工大学能源科学与工程学院河南焦作454003

硬岩巷道快速掘进是实现煤矿智能高效开采的重要环节,悬臂掘进机、TBM和底切割装备都在尝试解决这一难点,掘进技术和装备的发展直接影响采矿的安全生产和经济效益。首先,总结了悬臂掘进机在硬岩截割工况的适用范围和截齿消耗现状,分析... 详细信息

硬岩巷道快速掘进是实现煤矿智能高效开采的重要环节,悬臂掘进机、TBM和底切割装备都在尝试解决这一难点,掘进技术和装备的发展直接影响采矿的安全生产和经济效益。首先,总结了悬臂掘进机在硬岩截割工况的适用范围和截齿消耗现状,分析截割破岩形式的现场试验,发现在较高的岩石强度条件下,截齿消耗量较正常磨损翻倍,掘进速度与开采速度的不匹配,严重制约了矿井生产。其次,分析了滚刀破岩形式和装备在矿山领域的应用和新产品现状,得出移动式矿用掘进设备采用滚刀挤压破岩,块状渣土少,粉末多,刀盘推力小,导致破岩能力不足。最后,分析了线性底切割破岩技术和非线性底切割技术的原理和装备研发现状。结果表明:随着振荡频率的提高,切削力显著降低,非线性底切割破岩单位体积消耗能量少,优势明显。但在硬岩条件下的掘进效率、设备稳定性等关键问题有待验证,非线性底切割技术有望突破未来矿山硬岩掘进的技术难题。

关键词：硬岩巷道掘进技术破岩形式截齿破岩滚刀破岩底切割技术