检索结果-南通市图书馆

First-principles study on the co-adsorption of water and oxygen molecules on chalcopyrite(112)-M surface

在线全文

学校读者我要写书评

暂无评论

International Journal of Mining Science and Technology 2023年第8期33卷 1055-1063页

作者： Yingchao liu Jianhua Chen yuqiong li Cuihua Zhao School of Chemistry&Chemical Engineering School of ResourcesEnvironment and MaterialsGuangxi UniversityNanning 530004China Guangxi Key Laboratory of Processing for Non-ferrous Metal and Featured Materials Guangxi UniversityNanning 530004China

Chalcopyrite is a common copper-bearing mineral with antiferromagnetic ***,this property has rarely been considered in previous studies for detailed adsorption behaviors of molecules on *** on density functional theory(DFT),new adsorption pathways by H_(2)O and O_(2)on the chalcopyrite metal terminated(112)surface((112)-M)is found in this ***,through simulating the adsorption of an isolated water molecule and monolayer water molecules,it is confirmed that H_(2)O molecules tend to adsorb on the surface Fe atoms more than on the surface Cu ***,we studied various adsorption behaviors of the O_(2)*** is found that the adsorption on the hollow FeAFe site is the most stable case;however,O_(2)is *** adsorption cases will happen when H_(2)OAO_(2)adsorb simultaneously on the *** the S site,the H_(2)O molecule thoroughly dissociated and formed SAO species,and the other case is H_(2)O undissociated adsorbing at the Cu *** the former case,it is interesting that H_(2)O is dissociated before O_(2).

关键词： Chalcopyrite Water molecule Oxygen molecule Co-adsorption

新质战斗力背景下大模型赋能国防科技创新路径预测研究

在线全文

学校读者我要写书评

暂无评论

科技情报研究 2025年第1期7卷 86-94页

作者：段雨竺付强李玉琼湖南师范大学教育科学学院长沙410081 南华大学经济管理与法学学院衡阳421001 湖南工学院湖南省开放型经济研究基地衡阳421001 中国刑事警察学院沈阳110854

[目的/意义]国防科技创新助力新质战斗力发展已成为我国战略需求,有效预测国防科技创新路径对于切实提高国防科技创新能力、打造我国新质战斗力具有重要意义。[方法/过程]针对国防科技创新突变性、不确定性与高风险性特征,文章根据国防... 详细信息

[目的/意义]国防科技创新助力新质战斗力发展已成为我国战略需求,有效预测国防科技创新路径对于切实提高国防科技创新能力、打造我国新质战斗力具有重要意义。[方法/过程]针对国防科技创新突变性、不确定性与高风险性特征,文章根据国防科技创新路径预测核心要素,构建大模型赋能国防科技创新路径预测逻辑框架,利用军事需求识别、军工企业关键技术预测与创新政策挖掘子模型,对国防科技创新路径预测进行理论分析。[结果/结论]研究发现,大模型能够有效预测国防科技的发展趋势和关键技术突破点,为国防科技创新决策提供科学依据,切实推动新质生产力与新质战斗力深度融合。

关键词：新质战斗力大模型国防科技创新创新路径预测

A comprehensive simulation of weak-light phase-locking for space-borne gravitational wave antenna

维普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

Science China(Technological Sciences) 2016年第5期59卷 730-737页

作者： DONG YuHui liU HeShan LUO ZiRen li yuqiong JIN Gang National Microgravity Laboratory (NML) Institute of Mechanics Chinese Academy of Sciences Beijing 100190 China University of Chinese Academy of Sciences Beijing 100190 China QUEST Centre of Quantum Engineering and Space-Time Research Leibniz Universitat Hannover Hannover 30167 Germany Max-Planck-Institude for Gravitational Physics (Albert Einstein Institute) Hannover 30167 Germany

A comprehensive simulation was performed to better understand the impacts and effects of the additional technical noises on weak-light phase-locking for liSA. The result showed that the phase of the slave laser tracked well with the received transmitting light under different noise level, and the locking precision was limited by the phase readout noise when the laser frequency noise and clock jitter noise were removed. This result was then confirmed by a benchtop experimental test. The required liSA noise floor was recovered from the simulation which proved the validity of the simulation program. In order to convert the noise function into real time data with random characteristics, an algorism based on Fourier transform was also invented.

关键词： weak-light phase-locking gravitational wave detection heterodyne laser interferometer

Principle demonstration of fine pointing control system for inter-satellite laser communication

在线全文

学校读者我要写书评

暂无评论

Science China(Technological Sciences) 2015年第3期58卷 449-453页

作者： DONG YuHui liU HeShan LUO ZiRen li yuqiong JIN Gang National Microgravity Laboratory (NML) Institute of Mechanics Chinese Academy of Sciences University of Chinese Academy of Sciences

Due to high data rates and reliability,inter-satellite laser communication has developed rapidly in these ***,the stability of the laser beam pointing is still a key technique which needs to be solved;otherwise,the beam pointing jitter noise would reduce the communication quality or,even worse,would make the inter-satellite laser communication *** this purpose,a bench-top of the fine beam pointing control system has been built and tested for inter-satellite laser *** pointing offset of more than 100rad is produced by the steering *** beam pointing control system turned on,the offset could be rapidly suppressed to lower than 100 nrad in less than 0.5 ***,the pointing stability can be kept at 40 nrad for yaw motion and 62 nrad for pitch motion,when the received beam jitter is set at 20rad.

关键词： laser beam pointing control inter-satellite laser communication heterodyne laser interferometer differential wave-front sensing(DWS) technique

Hydroxyl radical electrochemically generated with water as the complete atom source and its environ-mental application

在线全文

学校读者我要写书评

暂无评论

Chinese Science Bulletin 2007年第10期52卷 1432-1435页

作者： CONG YanQing WU ZuCheng li yuqiong Department of Environmental Engineering Zhejiang University Hangzhou 310027 China

The most reactive hydroxyl radical (°OH) was generated by electrochemical approach with safe water as the complete atom source. The direct evidence for °OH formation was obtained by electron spin resonance method. The powerful °OH electrochemically generated could effectively degrade organic pollutants and reduce the toxicity of wastewater. Electrochemical disinfection by °OH was considerably efficient even without the aid of active chlorine. Bacteria inactivation of 99.99% was achieved for contact time of 30 min and current density of 5 mA·cm-2. In comparison with active chlorine, °OH is rather attractive as a promising environmentally benign disinfectant and opens a new route for microbial inactivation.

关键词：羟基 ESR 电化学过程环境保护应用水质净化

Effects of SiO_2 and TiO_2 on resistance stabilities of flexible indium-tin-oxide films prepared by ion assisted deposition

在线全文

学校读者我要写书评

暂无评论

Rare Metals 2009年第6期28卷 559-563页

作者： li yuqiong YU Zhinong WANG Wuyu FAN Yuejiang DING Zhao XUE Wei School of Optoelectronics Beijing Institute ofTectmology Beijing 100081 China General Research Institute for Nonferrous Metals Beijing 100088 China

Inorganic buffer layers such as SiO2 or TiO2 and transparent conductive indium-tin-oxide （ITO） films were prepared on polyethylene terephthalate （PET） substrates by ion assisted deposition （IAD） at room temperature, and the effects of SiO2 and TiOzon the bending resistance performance of flexible ITO films were investigated. The results show that ITO films with SiO2 or TiO2 buffer layer have better resistance stabilities compared to ones without the buffer layer when the ITO films are inwards bent at a bending radius more than 1.2 cm and when the ITO films are outwards bent at a bending radius from 0.8 cm to 1.2 cm. 1TO films with SiO2 buffer layer have better resistance sta- bilities compared to ones with TiO2 buffer layer after the ITO fdms are bent several hundreds of cycles at the same bending radius, for the adhesion of SiO2 is stronger than that of TiO2. The compressive stress resulted from inward bending leads to the formation of more defects in the ITO films compared with the tensile stress arising from outward bending. SiO2 and TiO2 buffer layers can effectively improve the crystallinity of ITO films in （400）, （440） directions.

关键词： indium-tin-oxide (ITO) inorganic buffer layers bending resistance performance stress ion assisted deposition (IAD)

DFT study on the interaction of HCHO molecule with S-doped TiO_(2) (001) surface without and with water and oxygen molecules

在线全文

学校读者我要写书评

暂无评论

Journal of Materiomics 2019年第4期5卷 558-566页

作者： Guofei Wu Cuihua Zhao Xi Zhou Jianhua Chen yuqiong li School of Resources Environment and MaterialsGuangxi UniversityNanning530004China Guangxi Key Laboratory of Processing for Non-ferrous Metal and Featured Materials Guangxi UniversityNanning530004China

The interactions of formaldehyde(HCHO)molecule with S-doped anatase TiO_(2)(001)surface without and with water and oxygen were studied by density functional theory(DFT).The adsorption energy of HCHO adsorption on S-doped TiO_(2) surface with water and oxygen(-709.62 kJ/mol)is much larger than that without water and oxygen(-312.14 kJ/mol).For HCHO adsorption system without water and oxygen,one CeH bond of HCHO molecule is *** oxygen and carbon atoms of HCHO are bonded to the titanium and sulfur atoms of SeTiO_(2) surface,respectively,and form a CH_(2)OS *** the system with water and oxygen,H_(2)O and HCHO molecules are both *** molecule not only interacts with TiO_(2) surface,but also combines with O_(2) *** CeH bonds of HCHO are broken,one hydrogen atom(H1)is bonded to the sulfur atom(S)of TiO_(2) surface doping,while another hydrogen atom(H_(2))is bonded to the O atom(O_(2))of O_(2) *** remaining CeO bond can be oxidized to form CO_(2) in subsequent action by oxygen from the *** surface doping of sulfur have significant impact on the degradation of HCHO molecule on anatase TiO_(2)(001)surface with H_(2)O and O_(2).

关键词： TiO_(2)(001)surface S surfacedoping Formaldehyde adsorption H_(2)O+O_(2) DFTB

Interpretable Machine Learning Method for Compressive Strength Prediction and Analysis of Pure Fly Ash-based Geopolymer Concrete

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

Journal of Wuhan University of Technology(Materials Science) 2025年第1期40卷 65-78页

作者： SHI yuqiong li Jingyi ZHANG Yang li li Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education Northwest A&F Uni-versityYangling 712100China College of Water Resources and Architectural Engineering Northwest A&F UniversityYangling 712100China Chongqing Key Laboratory of Public Big Data Security Technology Chongqing 401420China Chongqing College of Mobile Communication Chongqing 401520China Department of Civil and Environmental Engineering The Hong Kong Polytechnic UniversityHung HomKowloonHong KongChina National Rail Transit Electrification and Automation Engineering Technology Research Center(Hong Kong Branch) The Hong Kong Polytechnic UniversityKowloonHung HomHong KongChina

In order to study the characteristics of pure fly ash-based geopolymer concrete(PFGC)conveniently,we used a machine learning method that can quantify the perception of characteristics to predict its compressive *** this study,505 groups of data were collected,and a new database of compressive strength of PFGC was *** order to establish an accurate prediction model of compressive strength,five different types of machine learning networks were used for comparative *** five machine learning models all showed good compressive strength prediction performance on *** them,R2,MSE,RMSE and MAE of decision tree model(DT)are 0.99,1.58,1.25,and 0.25,*** R2,MSE,RMSE and MAE of random forest model(RF)are 0.97,5.17,2.27 and 1.38,*** two models have high prediction accuracy and outstanding generalization *** order to enhance the interpretability of model decision-making,we used importance ranking to obtain the perception of machine learning model to 13 *** 13 variables include chemical composition of fly ash(SiO_(2)/Al_(2)O_(3),Si/Al),the ratio of alkaline liquid to the binder,curing temperature,curing durations inside oven,fly ash dosage,fine aggregate dosage,coarse aggregate dosage,extra water dosage and sodium hydroxide *** temperature,specimen ages and curing durations inside oven have the greatest influence on the prediction results,indicating that curing conditions have more prominent influence on the compressive strength of PFGC than ordinary Portland cement *** importance of curing conditions of PFGC even exceeds that of the concrete mix proportion,due to the low reactivity of pure fly ash.

关键词： machine learning pure fly ash geopolymer compressive strength feature perception

Advances in the Study of Antitumor Activity and Mechanism of Antipsychotic Drug Brexpiprazole

在线全文

学校读者我要写书评

暂无评论

Medicinal Plant 2024年第5期15卷 81-84页

作者： Jingjing DONG yuqiong li Ruifen SUN School of Yunnan University of Traditional Chinese Medicine Kunming 650500China

Antipsychotics such as phenothiazines,pimozide,flupentixol and brexpiprazole have been shown to have good antitumor ***,the successor to aripiprazole,has a better safety *** promotes the death of tumor cells by inhibiting the prolif-eration of tumor stem cells,resolving the resistance of tumor cells to EGFR-TKIs,and promoting the sensitivity of tumor cells to chemothera-peutic agents,thus inhibiting the development of colorectal,lung,glioblastoma,pancreatic,and gastric *** review focuses on the antitumor effects of antipsychotic drugs,especially the inhibitory effect of brexpiprazole on tumor cells,aiming to provide a theoretical basis for antipsychotic drugs in antitumor field.

关键词： Antipsychotics Brexpiprazole Cancer therapy