检索结果-南通市图书馆

Promoted Non-enzymatic Glucose Sensor Based on Synergistic Effect of Hydrothermal Synthesized Ni(OH)_(2)-Graphene Nanocomposite

在线全文

学校读者我要写书评

暂无评论

Chemical Research in Chinese Universities 2024年第5期40卷 914-921页

作者： CAI Yuqing CUI Qingyan zhang Huanrong MA xinlei XUE Mianqi School of Chemistry and Life Resources Renmin University of ChinaBeijing100872P.R.China Technical Institute of Physics and Chemistry Chinese Academy of ScienceBeijing100190P.R.China

Although glucose electrochemical sensors based on enzymes play a dominant role in market,their stability remains a problem due to the inherent nature of ***,glucose sensors that are independent on enzymes have attracted more attention for the development of stable detection *** we present an enzyme-free glucose sensor based on Ni(OH)_(2)and reduced graphene oxide(rGO).The as-fabricated sensor still exhibits excellent electrocatalytic activity for detecting glucose under enzyme independent *** enhanced catalytic performance may due to synergistic effect as follows:(i)the interaction between the Ni2+andπelectron of graphene induces the formation of theβ-phase Ni(OH)_(2)with higher catalytic activity;(ii)the frozen dry process works as a secondary filtration,getting rid of poorly formed Ni(OH)_(2)particles with low catalytic activity;(iii)the rGO network with good conductivity provides a good electronic pathway for promoting electron transfer to reduce the response *** on the synergistic effect,the sensor exhibits a wide linear detection range from 0.2µmol/L to 1.0µmol/L and a low detection limit(0.1µmol/L,S/N=3).The excellent detection performance,as well as the easy and low-cost preparation method,suggests the promising applicability of the sensor in the glucose detection market.

关键词： Glucose sensing Non-enzyme sensor Graphene 2D material Ni(OH)_(2)nanosheet

Recent progress on the functionalization of white phosphorus in China

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

National Science Review 2024年第6期11卷 308-320页

作者： xinlei Huangfu Zhongzhen Wang Yu Chen Junnian Wei Wei Liu Wen-Xiong zhang Beijing National Laboratory for Molecular Sciences(BNLMS) State Key Laboratory of Rare-Earth Materials Chemistry and Applications & Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of EducationCollege of Chemistry and Molecular Engineering Peking University

Direct synthesis of organophosphorus compounds from white phosphorus represents a significant but challenging subject, especially in the context of ongoing efforts to comprehensively improve the phosphorus-derived chemical industry driven by sustainability and safety concerns. China is the world's largest producer of white phosphorus, creating a significant demand for the green transformation of this crucial feedstock. This review provides an overview of advancements in white phosphorus activation by Chinese research teams, focusing on the direct construction of P–C/N/O/S/M bonds from white phosphorus. Additionally, we offer some insights into prospective directions for the activation and transformation of white phosphorus in the future. This review paper aims to attract more researchers to engage in this area, stimulating follow-up exploration and fostering enduring advances.

关键词： white phosphorus organophosphorus compound activation selectivity efficiency

Towards experimental studying the airborne sound insulation of light frame walls with staggered studs

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 China(Technological Sciences) 2024年第7期67卷 2230-2243页

作者： zhang YuCai YUE Kong XIE YiFan CHENG XiangYu SHI xinlei WU Peng ZHAO Hui College of Civil Engineering Nanjing Tech UniversityNanjing 211800China Key Laboratory of Architectural Acoustic Environment of Anhui Higher Education Institutes Hefei 230601China Nanjing Gongda Construction Technology Co.Ltd. Nanjing 211800China

Light frame walls(LFWs) serve as common partition walls in prefabricated buildings due to their lightweight nature, costeffectiveness, energy efficiency, and adaptability for rapid on-site assembly. However, their acoustic insulation capability is hindered by issues such as sound bridges, resonance, and coincidence dips, resulting in inadequate sound insulation. This study aims to propose LFW designs with superior acoustic insulation suitable for practical engineering while meeting prevailing national standards. Nine full-scale LFW configurations were subjected to laboratory testing to evaluate the impact of staggered stud arrangements, stud types, and incorporation of compounded materials. The tests were performed between 100 and 5000 Hz,and the sound pressure level and reverberation time at 1/3 octave band were measured and used to calculate the weighted sound insulation index(Rw). Results demonstrated that the outlined design modifications significantly enhanced the sound insulation of the LFW. These modifications effectively mitigate the influence of sound bridges while addressing resonance and coincidence dips inherent in the wall system. Particularly noteworthy was the superior sound insulation achieved by staggered-stud LFWs with compounded materials, surpassing that of autoclaved lightweight concrete walls commonly used in prefabricated constructions despite having lesser thickness and surface density. Rwvalues increased from 43 to 54 dB compared to conventional LFWs, translating to a notable elevation in airborne sound insulation level from 4 to 7 as an internal separation component,meeting the requisite standards for most applications.

关键词： light frame wall staggered stud airborne sound insulation weighted sound insulation index

Electrical discharge and arc milling with automatic tracking of optimal flushing direction:A novel high-efficiency compound machining method

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Aeronautics 2024年第3期37卷 351-364页

作者： xinlei WU Yonghong LIU Pengxin zhang Liang QI Dege LI Chi MA Renjie JI College of Mechanical and Electronic Engineering China University of Petroleum(East China)Qingdao 266580China School of Mechanical and Power Engineering Nanjing Tech UniversityNanjing 211816China

The arc milling method has the advantages of high machining efficiency and low cost and is independent of the strength and hardness of machined ***,frequent electrode back-offs and the risk of workpiece burning may occur if erosion products are not removed *** this study,it was found that the flushing method of the working medium had a significant impact on the machining performance of arc *** on this,a novel highefficiency compound machining method of electrical discharge and arc milling with automatic tracking of the optimal flushing direction was *** automatic tracking optimizer for external working medium injection was designed to determine the optimal external flushing direction according to the feed *** influence of flushing methods,working mediums,and machining parameters on the machining efficiency,tool electrode wear rate,machining error,and surface integrity of titanium alloys were *** results indicated that better machining performance and environmental friendliness were achieved using the compound flushing method of outer compressed air and inner deionized ***,the automatic tracking flushing method in the opposite direction of the feed direction showed superior results compared to other *** material removal rate with the opposite direction injection could be increased up to 1.62 times that of the same direction,and the relative electrode wear rate could be reduced by 14.76%.This novel method has broad application prospects for machining parts with difficult-to-cut materials in aerospace and military industries.

关键词： Arc milling Dielectric Difficult-to-cut materials Electric discharge machining Erosion Material removal rate

Synergetic effects of Bi^(5+)and oxygen vacancies in Bismuth(Ⅴ)-rich Bi_(4)O_(7)nanosheets for enhanced near-infrared light driven photocatalysis

在线全文

学校读者我要写书评

暂无评论

Journal of Materials Science & Technology 2021年第26期85卷 1-10页

作者： Jin Liu Sheng Guo Hongzhang Wu xinlei zhang Jun Li Kun Zhou Henan Key Laboratory of Rare Earth Functional Materials Zhoukou Normal UniversityZhoukou 466001PR China Henan Institute of Advanced Technology Zhengzhou UniversityZhengzhou 450052PR China School of Chemistry and Environmental Engineering Wuhan Institute of TechnologyWuhan 430205PR China Environmental Process Modelling Centre Nanyang Environment and Water Research InstituteNanyang Technological University1 CleanTech Loop637141Singapore School of Mechanical and Aerospace Engineering Nanyang Technological University50 Nanyang Avenue639798Singapore

The appropriate energy level position of photocatalysts dominates the photocatalytic redox reaction and utilization efficiency of solar energy for wastewater ***,we report a near-infrared(NIR)light driven Bi^(5+)-rich Bi407 photocatalyst,achieving a greatly enhanced photocatalytic activity for pollutant removal compared with Bi3+-replenished *** functional theory calculations show the formation of an intermediate band in the Bi_(4)O_(7)structure because of the hybridization of O 2p and Bi 4s *** formation of the intermediate band not only narrows the band gap but also improves the optical absorption property and separation efficiency of the photoinduced *** existence of the oxygen vacancies(OVs)in the Bi_(4)O_(7)nanosheets ensures high carriers’concentration,which is verified by the Hall effect *** synergetic effects of the OVs and Bi^(5+)greatly accelerate the separation efficiency of the photogenerated ***,the Bi_(4)O_(7)nanosheets exhibit enhanced NIR light driven photocatalytic activity for the degradation of rhodamine B and ciprofloxacin compared with the bulk *** study paves the way to the design of highly efficient NIR light-responsive Bi-based photocatalysts for environmental purification.

关键词： Bi_(4)O_(7)nanosheets Near-infrared light Oxygen vacancies Charge separation Photocatalysis

新形势下以解决复杂工程问题为导向的城市地下空间专业人才培养模式

在线全文

学校读者我要写书评

暂无评论

创新创业理论研究与实践 2024年第11期7卷 129-134页

作者：张鑫磊高洪梅申志福刘璐王志华孙晋晶南京工业大学交通运输工程学院江苏南京211816

人工智能、虚拟仿真、大数据等新兴技术的蓬勃发展,促进了城市地下空间专业越发注重学科交叉融合及技术原始创新。在新形势下,传统的人才培养模式已无法适应城市地下空间利用面临的新挑战,以解决复杂工程问题为导向的人才培养模式成了... 详细信息

人工智能、虚拟仿真、大数据等新兴技术的蓬勃发展,促进了城市地下空间专业越发注重学科交叉融合及技术原始创新。在新形势下,传统的人才培养模式已无法适应城市地下空间利用面临的新挑战,以解决复杂工程问题为导向的人才培养模式成了当务之急。该文阐明以解决复杂工程问题为导向的培养模式的重要性,探索其教学模式,旨在培养学生解决复杂工程问题的跨学科及综合能力,以适应未来城市地下空间工程发展的需求与挑战。

关键词：新工科城市地下空间工程解决复杂工程问题为导向新形势新兴技术学科交叉

Higher ambient temperatures may worsen obstructive sleep apnea:A nationwide smartwatch-based analysis of 6.2 million person-days

在线全文

学校读者我要写书评

暂无评论

Science Bulletin 2024年第13期69卷 2114-2121页

作者： Anni Li Qingli zhang Yuan Yao xinlei Zhu Cong Liu Yutao Guo Haidong Kan Renjie Chen School of Public Health Key Lab of Public Health Safety of the Ministry of Education and NHC Key Lab of Health Technology AssessmentFudan UniversityShanghai 200032China Ministry of Education-Shanghai Key Laboratory of Children’s Environmental Health Xinhua Hospital Affiliated to Shanghai Jiao Tong University School of MedicineShanghai 200092China Department of Pulmonary Vessel and Thrombotic Disease Sixth Medical CenterChinese PLA General HospitalBeijing 100048China Institute for Hospital Management Research Chinese PLA General HospitalBeijing 100048China Children’s Hospital of Fudan University National Children’s Medical CenterShanghai 201102China School of Public Health Hengyang Medical SchoolUniversity of South ChinaHengyang 421001China

Obstructive sleep apnea(OSA)is a serious type of sleep disorder that can lead to cardiometabolic and neurocognitive *** utilized smart device-based photoplethysmography technology to collect sleep data from the Chinese population from 2019 to *** lag nonlinear models combined with a generalized nonlinear model or a linear mixed effects model were used to investigate the shortterm associations between daily temperature and indicators of OSA *** included a total of 6,232,056 d of sleep monitoring data from 51,842 participants with moderate to severe risk of OSA from 313 Chinese *** relationships between ambient temperature and OSA exacerbation,apneahypopnea index(AHI),and minimum oxygen saturation(MinSpO_(2))were almost linear and present only on the same *** temperatures were associated with a greater risk of OSA exacerbation,with an 8.4%(95%confidence interval(CI):7.6%–9.3%)increase per 10℃increase in temperature.A 10℃increase in daily temperature corresponded to an AHI increase of 0.70 events/h(95%CI:0.65–0.76)and a MinSpO_(2)decrease of 0.18%(95%CI:0.16%–0.19%).Exposure to elevated temperatures during the night can also lead to adverse *** effects of higher temperatures on OSA severity were stronger among men,participants with a body mass index24 kg/m2,those aged 45 years and older,individuals with a history of hypertension and diabetes,and during the cold *** large-scale,nationwide,longitudinal study provides robust evidence suggesting that higher ambient temperatures may immediately worsen OSA.

关键词： Obstructive sleep apnea Temperature Apnea-hypopnea index Oxygen saturation Smart device

Quantitative proteomics analysis of parthenogenetically induced pluripotent stem cells

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

Protein & Cell 2011年第8期2卷 631-646页

作者： Zhe Hu LeiWang Zhensheng Xie xinlei zhang Du Feng Fang Wang Bingfeng Zuo Lingling Wang Zhong Liu Zhisheng Chen Fuquan Yang Lin Liu Department of Cell Biology and Genetics Key Laboratory of Bioactive Materials of Ministry of EducationCollege of Life SciencesNankai UniversityTianjin 300071China Laboratory of Proteomics Institute of BiophysicsChinese Academy of SciencesBeijing 100101China Center for Computational and Systems Biology Institute of BiophysicsChinese Academy of SciencesBeijing 100101China

Parthenogenetic embryonic stem(pES)cells isolated from parthenogenetic activation of oocytes and embryos,also called parthenogenetically induced pluripotent stem cells,exhibit pluripotency evidenced by both in vitro and in vivo differentiation *** proteomic analysis was performed using differential in-gel electrophoresis and isotope-coded affinity tag-based quantitative proteomics to investigate the molecular mechanisms underlying the developmental pluripotency of pES cells and to compare the protein expression of pES cells generated from either the in vivo-matured ovulated(IVO)oocytes or from the in vitro-matured(IVM)oocytes with that of fertilized embryonic stem(fES)cells derived from fertilized embryos.A total of 76 proteins were upregulated and 16 proteins were downregulated in the IVM pES cells,whereas 91 proteins were upregulated and 9 were downregulated in the IVO pES cells based on a minimal 1.5-fold change as the cutoff *** distinct pathways were found in the differentially expressed proteins except for those involved in metabolism and physiological ***,no differences were found in the protein expression of imprinted genes between the pES and fES cells,suggesting that genomic imprinting can be corrected in the pES cells at least at the early *** germline competent IVM pES cells may be applicable for germ cell renewal in aging ovaries if oocytes are retrieved at a younger age.

关键词： parthenogenetic embryonic stem cell proteome fluorescent two-dimensional difference in-gel electrophoresis isotope-coded affinity tag

在线全文

学校读者我要写书评

暂无评论

高职英语混合式教学的知识图谱分析

山东电力高等专科学校学报 2024年第2期27卷 62-65页

作者：许晓晨张新磊朱磊庄庆法卢英娜李文进山东电力高等专科学校山东济南250002

近年来,混合式教学成为教学实践和研究的焦点,对于提升教学质量具有重要意义。以中国知网数据库中主题为“高职英语混合式教学”的文献为基础,运用专业的知识图谱分析软件CiteSpace,对高职英语混合式教学的研究现状进行了深入分析。根... 详细信息

近年来,混合式教学成为教学实践和研究的焦点,对于提升教学质量具有重要意义。以中国知网数据库中主题为“高职英语混合式教学”的文献为基础,运用专业的知识图谱分析软件CiteSpace,对高职英语混合式教学的研究现状进行了深入分析。根据分析数据将高职英语混合式教学研究知识图谱进行可视化,深入挖掘高职英语混合式教学研究主题和热点,提出混合式教学的参考性建议,以提升高职英语混合式教学水平。

关键词：高职英语混合式教学知识图谱教学研究