检索结果-南通市图书馆

Chemical Research in Chinese Universities 2022年第4期38卷 919-927页

作者： ZHU Junlun cui qian WEN Wei ZHANG Xiuhua WANG Shengfu Key Laboratory for the Synthesis and Application of Organic Functional Molecules Ministry of EducationCollege of Chemistry and Chemical EngineeringHubei UniversityWuhan430062P.R.China

Although great progress has been made in the advancement of nanozymes,most of the studies focus on mimicking peroxidase,oxidase,and catalase,while relatively few studies are used to mimic ***,the use of nanomaterials to mimic laccase activity will have great potential in environmental and industrial ***,Cu/CuO-graphene foam with laccase-like activity was designed for the identification of phenolic compounds and the detection of *** a typical experiment,the formation mechanism of Cu/CuO-graphene foam was investigated during the pyrolysis process by thermogravimetric-mass *** a laccase mimic,Cu/CuO-graphene foam exhibited excellent catalytic activity with a Michaelis-Menten constant and a maximum initial velocity of 0.17 mmol/L and 0.012µmol·L^(−1)·s^(−1),*** on this principle,Cu/CuO-graphene foam nanozyme could differentially catalyze phenolic compounds and 4-aminoantipyrine for simultaneous identification of phenolic ***,a colorimetric sensing platform was fabricated for the quantitative determination of epinephrine,showing linear responses to epinephrine in the range of 3µg/mL to 20µg/mL with the detection limit of 0.2µg/*** proposed Cu/CuO-graphene foam nanozyme could be applied for the identification of phenolic compounds and the detection of epinephrine,showing great potential applications for environmental monitoring,biomedical sensing,and food detection fields.

关键词： Nanozyme Laccase-like activity Cu/CuO-graphene foam Phenolic compound Epinephrine

Carbon honeycomb structure with high axial thermal transport and strong robustness

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

Rare Metals 2023年第8期42卷 2679-2687页

作者： Wei-Jun Ren Shuang Lu cui-qian Yu Jia He Jie Chen China-EU Joint Lab for Nanophononics MOE Key Laboratory of Advanced Micro-Structured MaterialsCenter for Phononics and Thermal Energy ScienceSchool of Physics Science and EngineeringTongji UniversityShanghai 200092China

Thermal transport properties of low-dimensional nanomaterials are highly anisotropic and sensitive to the structural disorder,which can greatly limit their applications in heat *** this work,we unveil that the carbon honeycomb structures which have high in-plane thermal conductivity simultaneously possess high axial thermal *** on non-equilibrium molecular dynamics simulations,we find that the intrinsic axial thermal conductivity of carbon honeycomb structure reaches 746 W·m^(-1)·K^(-1)at room temperature,comparable to that of good heat dissipation materials such as hexagonal boron *** comparing the phonon transmission spectrum between carbon honeycombs and few layer graphene,the physical mechanism responsible for the high axial thermal conductivity of carbon honeycombs is *** importantly,our simulation results further demonstrate that the high axial thermal conductivity of carbon honeycomb structure is robust to the structural disorder,which is a common issue during the mass production of the carbon honeycomb *** study suggests that the carbon honeycomb structure has unique advantages to serve as the thermal management material for practical applications.

关键词： Carbon honeycomb Thermal conductivity Molecular dynamics simulation Phonon transmission Structural disorder

Evaluation of the in vitro and in vivo Genotoxicity of Almond Skins

在线全文

学校读者我要写书评

暂无评论

Biomedical and Environmental Sciences 2011年第4期24卷 415-421页

作者： ZHANG XiaoPeng XIANG qian cui WenMing JIA XuDong LI Ning Institute for Nutrition and Food Safety Chinese Center for Disease Control and PreventionBeijing 100021China

Objective It aims to study potential genotoxicity of almond *** A bacterial reverse mutation assay was performed on *** strains TA97,TA98,TA100,TA102,and TA1535 in the absence or presence of S-9 mixture at a dose range of 312.5 to 5 000 μg/plate.A micronucleus test and a mammalian bone marrow chromosome aberration tests were performed in Swiss Albino （CD-1） mice at doses of 625,1 250,and 2 500 mg/kg bw *** Almond skins exerted no mutagenic activity in various bacterial strains of Salmonella typhimurium in either the absence or the presence of metabolic activation at all doses *** doses of almond skins did not affect the proportions of immature to total erythrocytes,the number of micronuclei in the immature erythrocytes,or the number of structural and numerical chromosomal aberrations of Swiss albino *** Almond skins are not genotoxic under the conditions of the in vitro bacterial reverse mutation assay and two in vivo tests-micronucleus test and mammalian bone marrow chromosome aberration test,which supports the safety of almond skins for dietary consumption.

关键词： Almond skins Genotoxicity Mutagenicity Micronuclei Chromosome aberration

Mesenchymal stem cells,extracellular vesicles,and transcranial magnetic stimulation for ferroptosis after spinal cord injury

在线全文

学校读者我要写书评

暂无评论

Neural Regeneration Research 2023年第9期18卷 1861-1868页

作者： Qi-Feng Song qian cui Ya-Shi Wang Li-Xin Zhang Department of Rehabilitation Shengjing Hospital of China Medical UniversityShenyangLiaoning ProvinceChina

Spinal cord injury is characte rized by diffe rent aetiologies,complex pathogenesis,and diverse pathological *** treatments are not ideal,and prognosis is generally *** spinal cord injury,neurons die due to various forms of cell *** them,fe rroptosis causes dysfunction after spinal cord injury,and no existing traditional treatments have been indicated to block its ***,emerging therapies using mesenchymal stem cells,extracellular vesicles,and transcranial magnetic stimulation therapy are promising for reve rsing spinal co rd neuronal ferroptosis after spinal cord ***,no definitive studies have demonstrated the effectiveness of these *** review summarizes the existing research on the mechanisms of ferroptosis;fe rroptosis after spinal cord injury;treatment of spinal cord injury with mesenchymal stem cells,extracellular vesicles,and transc ranial magnetic stimulation;and treatment of ferroptosis using mesenchymal stem cells,extracellular vesicles,and transc ranial magnetic *** ferroptosis can promote the reversal of neurological dysfunction after spinal cord *** addition,mesenchymal stem cells,extracellular vesicles,and transc ranial magnetic stimulation can reve rse adverse outcomes of spinal cord injury and regulate ferroptosis-related fa ***,it can be inferred that mesenchymal stem cells,extracellular vesicles,and transcranial magnetic stimulation have the potential to inhibit fe rroptosis after spinal cord *** review serves as a reference for future research to confirm these conclusions.

关键词： exosomes extracellular vesicles ferroptosis iron overload lipid peroxidation mesenchymal stem cells miRNAs spinal cord injury stem cells transcranial magnetic stimulation

Effective Response of Nonlinear Spherical Coated Composites Under External AC and DC Electric Field

在线全文

学校读者我要写书评

暂无评论

Communications in Theoretical Physics 2009年第4期51卷 743-747页

作者： SHEN Yu-Yan CHEN Xiao-Gang LI qian-qian cui Wei HAO Yan-Hua College of Science Inner Mongolia University of Technology Hohhot 010051 China

Under the external AC and DC electric field, the effective response of nonlinear spherical coated composites, which obey the constitutive relation of electric displaeement and electric field, is investigated in the dilute limit by using the perturbation method. The local potentials in inclusion and host regions are derived at all harmonics. Moreover, the formulae of the effective linear and nonlinear responses are given in the dilute limit.

关键词： nonlinear composites effective response AC electric field

Multi-effect anthraquinone-based polyimide enclosed SnO_(2)/reduced graphene oxide composite as high-performance anode for lithium-ion battery

在线全文

学校读者我要写书评

暂无评论

Frontiers of Chemical Science and Engineering 2023年第9期17卷 1231-1243页

作者： Lin Wang Yinjie Kuang qian cui Junyu Shi Liubin Song Qionghua Li Tianjian Peng Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation School of Chemistry and Chemical EngineeringChangsha University of Science and TechnologyChangsha410114China Guizhou Dalong Huicheng New Material Co. Ltd.Tongren554000China

The cycling stability of SnO_(2)anode as lithium-ion battery is poor due to volume *** coatings can effectively confine the expansion of SnO_(2).However,linear polyimides are easily dissolved in ester electrolytes and their carbonyls is not fully utilized during charging/discharging ***,the SnO_(2)enclosed with anthraquinone-based polyimide/reduced graphene oxide composite was prepared by *** from the anthraquinone unit provide fully available active sites to react with Li^(+),improving the utilization of carbonyl in the *** exposed carbonyl active sites promote the conversion of Sn to SnO_(2)with electrode gradual activation,leading to an increase in reversible capacity during the charge/discharge *** addition,the introduction of reduced graphene oxide cannot only improve the stability of polyimide in the electrolyte,but also build fast ion and electron transport channels for composite *** to the multiple effects of anthraquinone-based polyimide and the synergistic effect of reducing graphene oxide,the composite anode exhibits a maximum reversible capacity of 1266 mAh·g^(−1) at 0.25 A·g^(−1),and maintains an excellent specific capacity of 983 mAh·g^(−1) after 200 *** work provides a new strategy for the synergistic modification of SnO_(2).

关键词： anthraquinone-based polyimide multi-effect tin dioxide reduced graphene oxide lithium-ion battery

身体活动水平对2型糖尿病患者颈动脉内膜中层厚度增厚的影响研究

在线全文

学校读者我要写书评

暂无评论

中国全科医学 2025年第6期28卷 697-704页

作者：孙珍珍崔茜楼青青陈晓栋方丹姚平袁晓丹南京中医药大学附属医院内分泌科江苏省南京市210004 南京医科大学附属常州第二人民医院内分泌科江苏省常州市213000 海南医学院第一附属医院代谢性疾病临床医学研究中心海南省海口市570102 南京中医药大学附属中西医结合医院心血管内科江苏省南京市210028 南京中医药大学护理学院江苏省南京市210023 南京中医药大学附属中西医结合医院内分泌科江苏省南京市210028 南京中医药大学附属中西医结合医院公共卫生科江苏省南京市210028

背景心血管疾病是2型糖尿病(T2DM)患者的主要死亡原因,颈动脉内膜中层厚度(CIMT)增厚可预测心血管疾病的发生。中高水平的身体活动(PA)可改善患者的血糖水平并降低心血管疾病的发生率和死亡风险。探讨这一可改变的生活方式与CIMT的关系... 详细信息

背景心血管疾病是2型糖尿病(T2DM)患者的主要死亡原因,颈动脉内膜中层厚度(CIMT)增厚可预测心血管疾病的发生。中高水平的身体活动(PA)可改善患者的血糖水平并降低心血管疾病的发生率和死亡风险。探讨这一可改变的生活方式与CIMT的关系可能是预防心血管疾病的有效策略。目的分析不同PA水平与T2DM患者CIMT增厚的关系,为患者推荐个性化活动方案提供科学依据。方法本研究为横断面研究,选取2019年1月—2022年2月于江苏省两家三级甲等医院内分泌门诊就诊的3099例T2DM患者为研究对象,采用国际身体活动量表(IPAQ)短问卷评估患者的PA水平,将患者分为轻度及以下PA组、中度PA组和高强度PA组。通过二元Logistic回归分析探讨PA与CIMT增厚的关系,并按照不同肥胖程度和血压、血脂及糖化达标状况进行分层分析。将PA水平作为连续变量绘制限制性立方样条评价PA与CIMT增厚的剂量反应关系。结果与轻度及以下PA患者(n=981)相比,中度(n=1389)和高强度(n=729)PA患者的年龄较小,糖化血红蛋白(HbA_(1c))和低密度脂蛋白胆固醇(LDL-C)水平较高(P0.05);而在肥胖患者(n=708)中仅中度PA与CIMT增厚相关(OR=0.614,95%CI=0.382~0.987,P<0.05);血压、血脂及糖化3项指标均不达标(n=324)和仅1项指标达标(n=1416)的患者,中度PA与发生CIMT增厚呈负相关(P<0.05)。结论PA水平与CIMT增厚存在剂量反应关系,中度PA与CIMT增厚呈负相关,尤其是在肥胖、血压、血脂及糖化控制较差的人群中,而高强度PA对CIMT的影响不显著。

关键词：糖尿病,2型身体活动颈动脉内膜中膜厚度横断面研究江苏省

Recent progress of amine modified sorbents for capturing CO2 from flue gas

同方期刊数据库博看期刊评论

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Chemical Engineering 2018年第11期26卷 2292-2302页

作者： Xinglei Zhao qian cui BaodengWang Xueliang Yan Surinder Singh Feng Zhang Xing Gao Yonglong Li National Institute of Clean and Low Carbon Energy (NICE) Beijing 102211 China NICE America Research Mountain View CA USA

Under the Paris agreement, China has committed to reducing CO_2 emissions by 60%–65% per unit of GDP by *** CO_2 emissions from coal-fired power plants currently account for over 30% of the total carbon emissions in China, it will be necessary to mitigate at least some of these emissions to achieve this goal. Studies by the International Energy Agency(IEA) indicate CCS technology has the potential to contribute 14% of global emission reductions, followed by 40% of higher energy efficiency and 35% of renewable energy, which is considered as the most promising technology to significantly reduce carbon emissions for current coal-fired power ***, the announcement of a Chinese national carbon trading market in late 2017 signals an opportunity for the commercial deployment of CO_2 capture ***, the only commercially demonstrated technology for post-combustion CO_2 capture technology from power plants is solvent-based absorption. While commercially viable, the costs of deploying this technology are high. This has motivated efforts to develop more affordable alternatives, including advanced solvents, membranes,and sorbent capture systems. Of these approaches, advanced solvents have received the most attention in terms of research and demonstration. In contrast, sorbent capture technology has less attention, despite its potential for much lower energy consumption due to the absence of water in the sorbent. This paper reviews recent progress in the development of sorbent materials modified by amine functionalities with an emphasis on material characterization methods and the effects of operating conditions on performance. The main problems and challenges that need to be overcome to improve the competitiveness of sorbent-based capture technologies are discussed.

关键词： CO2 sorbent Amine Flue gas CO2 adsorption CO2 regeneration

THERMO-RESPONSIVE BLOCK COPOLYMERS BASED ON LINEAR-TYPE POLY(ETHYLENE GLYCOL):TUNABLE LCST WITHIN THE PHYSIOLOGICAL RANGE

在线全文

学校读者我要写书评

暂无评论

Chinese Journal of Polymer Science 2012年第5期30卷 770-776页

作者： Guo-liang Yue qian-ling cui Yu-xi Zhang Er-jian Wang 吴飞鹏 Technical Institute of Physics and Chemistry Chinese Academy of SciencesBeijing100190China Graduate School of Chinese Academy of Sciences Beijing100049China

Therrno-responsive block copolymers poly（ethylene glycol）-block-poly（N-acryloyl-2,2-dimethyl-1,3-oxazolidine）, PEG-b-PADMO, based on linear PEG were prepared via a versatile reversible addition-fragmentation chain transfer （RAFT） polymerization, PEG22 （Mw = 1000） was used as the hydrophilic component, whose dehydration was the main driving force for the phase transition of these copolymers, as demonstrated by the tH-NMR spectra. Their lower critical solution temperatures （LCSTs） could be tuned in the range of 20℃ to 35℃, by adjusting the degree of polymerization （DP） of PADMO between 14-27. Furthermore, a sharp phase transition at ca. 33℃, close to the physiological temperature with minimal hysteresis, was observed for the PEGzz-b-PADMO14 copolymer. Moreover, excellent reversibility and reproducibility were displayed for the same copolymer over 10 cycles of repeated temperature change between 25℃ （below the LCST） and 40℃ （above the LCST）.

关键词： Thermo-responsive Block copolymers Linear PEG Phase transitions.

Characteristics of the Paleozoic slope break system and its control on stratigraphic-lithologic traps:An example from the Tarim Basin,western China

在线全文

学校读者我要写书评

暂无评论

Journal of Palaeogeography 2015年第3期4卷 284-304页

作者： Hao Liu Chang-Song Lin Rui-Bo Guo Min Zhu Yong-qian cui School of Ocean Sciences China University of Geosciences(Beijing) Institute of Pet Engineering Heriot-Watt University Geophysical Exploration Research Institute of PetroC hina Huabei Oilfield Company

Based on comprehensive analyses of seismic and tog data, this study indicates that mainty four widespread angutar to minor angutar unconformities （Tg8, Tg51, Tg5 and Tg3） were formed during the Pateozoic. Through the interpretation of structural unconformities, calcutation of eroded thickness, correction of pataeo-water depth and compaction and compiration of the Earty Paleozoic structural maps, the Earty Paleozoic stope break bert （geomorphologic unit） of the Tarim Basin is subdivided into uptift area, subaqueous uptift area, rift slope break belt, flexure stope break bert （stope bert）, depression area and deep basin area. Pataeogeomorphotogy of the Cambrian-Early Ordovician was approximately in EW trend within which three tectonic units inctuding the Tabei Pataeo-uptift, the northern Depressional Belt and the southern Pataeo-uptift developed respectivety and are grouped into two stope break systems namety as the Tabei Pataeo-uptift and the southern Pataeo-uptift. These tectonic units obviousty controt the deposition of isolated platform, open platform, restricted ptatform and deep basin. Influenced by extrusion in the Mid-Late Ordovician, the southern and northern subaqueous uptifts graduat[y etevated and then were eroded. Resuttant[y two slope break systems devetoped, namely as the northern and central Pataeo-uptifts which obviousty controtled the deposition of provenance area, isolated ptatform, mixed continental shelf, slope and basin facies. The intensive extrusion of the Mid-Late Ordovician reads to significant tectonic deformation of the Tarim Basin： large area of uplifting and erosion and development of EW trending anticline and syncline. Deposition of shore, tidal fiat, delta, shallow marine clastics and deep marine facies is obviously controlled by the Tabei, the southern and the Tadong Palaeo-uplifts. Slope break systems control development of stratigraphic unconformity and thus truncation and onlap unconformity zones become favorable areas in a palaeo-u

关键词： Earty Pateozoic structural unconform-ity stope break system stratigraphic-lithologictrap Tarim Basin