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Science China Materials 2024年第12期67卷 3976-3985页

作者： Xilong Zhang Zhongshan Deng Huize Song Minghui Guo Lei Li Key Laboratory of Cryogenic Science and Technology Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China School of Future Technology University of Chinese Academy of SciencesBeijing 100049China

The presence of electromagnetic interference(EMI)leads to distortion of current and voltage waveforms,which reduces the accuracy and stability of sensor *** emergence of flexible electronic devices has broken the limits of physical space,as they can be bent and twisted at ***,this characteristic exacerbates unwanted coupling of their internal sensing elements,which can interfere with each *** present,the solution to EMI is based on electromagnetic shielding(EMS),but this method alone cannot solve internal EMI of flexible sensor *** this study,the gallium-based liquid metal(LM)circuits are printed on the Ecoflex@Fe film to realize a stretchable film with both EMS and wave-absorbing functions,which is expected to simultaneously address the effects of internal and external *** results show that the shielding efficiency of the electromagnetic wave shielding and absorbing(EWSA)film is as high as 54.5 dB on one side,while the reflection loss on the other side is as low as−43.5 *** addition,the LM-based EWSA film maintains positive wave-absorbing and EMS properties during stretching in different directions and it can also effectively avoid EMI after 1000 times of ***,the LM-based EWSA film,which enables broadband EMS and wave-absorption,provides a solution for the development of next-generation flexible electronic skin that eliminates both internal and external EMI.

关键词： liquid metal wave absorbing electromagnetic shielding electromagnetic interference

Evaluate the Use of Blog Sites in the Language Teaching and Learning

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Journal of Contemporary Educational Research 2021年第12期5卷 195-199页

作者： Rui Xu Qi Wang Lili Zhou Anhui Vocational and technical College Hefei 230000China West Anhui Health Vocational College Luan 237000China

In the era of rapid development of information technology,an increasing number of educators involve blog sites in their language teaching *** blogs are incredibly effective in language teaching and learning,there is still space for *** may be able to choose helpful learning content and share their thoughts with teachers and other language ***,as compared to traditional educational methods,blogs encourage students to communicate with their professors or other students in written form more *** a result,it may help pupils enhance their reading and writing skills,as well as their learning initiative and ***,it may allow students to track their learning progress,which may be beneficial in developing students’self-assessment,self-management,and self-education skills.

关键词： Blog Language teaching and learning Learning autonomy Language abilities

Integrating 2D layered materials with 3D bulk materials as van der Waals heterostructures for photodetections:Current status and perspectives

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InfoMat 2023年第10期5卷 1-31页

作者： Weijie Liu Yiye Yu Meng Peng Zhihua Zheng Pengcheng Jian Yang Wang Yuanchen Zou Yongming Zhao Fang Wang Feng Wu Changqing Chen Jiangnan Dai Peng Wang Weida Hu Wuhan National Laboratory for Optoelectronics Huazhong University of Science and TechnologyWuhanthe People's Republic of China State Key Laboratory of Infrared Science and Technology Shanghai Institute of Technical PhysicsChinese Academy of SciencesShanghaithePeople's Republic of China State Key Laboratory of ASIC and System School of MicroelectronicsFudan UniversityShanghaithe People's Republic of China

In the last decade,two-dimensional layered materials(2DLMs)have been drawing extensive attentions due to their unique properties,such as absence of surface dangling bonds,thickness-dependent bandgap,high absorption coeffi-cient,large specific surface area,and so *** the high-quality growth and transfer of wafer-scale 2DLMs films is still a great challenge for the commerciali-zation of pure 2DLMs-based ***,the material growth and device fabrication technologies of three-dimensional(3D)semiconductors photodetectors tend to be gradually ***,the further improvement of the photodetection performance is limited by the difficult heterogeneous inte-gration or the inferior crystal quality via ***,2D/3D van der Waals heterostructures(vdWH)combine the advantages of the two types of materials simultaneously,which may provide a new platform for developing high-performance optoelectronic ***,we first discuss the unique advantages of 2D/3D vdWH for the future development of photodetection field and simply introduce the structure categories,working mechanisms,and the typical fabrication methods of 2D/3D vdWH ***,we outline the recent progress on 2D/3D vdWH-based photodetection devices integrating 2DLMs with the traditional 3D semiconductor materials,including Si,Ge,GaAs,AlGaN,SiC,and so ***,we highlight the current challenges and pros-pects of heterointegrating 2DLMs with traditional 3D semiconductors toward photodetection applications.

关键词： photodetectors three-dimensional semiconductors two-dimensional layered materials vander Waals heterostructures

2002年——移动通信业的机遇、挑战与选择

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电信网技术 2002年第1期 42-46页

作者： Albert Lu director of Strategic development Ericsson(China)Company Ltd. Hold various technical and management positions since joined Ericsson in 1995.Master of Engineering in 'telecommunications from Southeast University China. MBA from the University of Chicago.

经历了世界经济滑坡之后,移动通信产业的未来必将成为各设备制造公司及运营公司关注的焦点之一。2001年全球移动通信市场仍然呈现出迅猛的发展势头,数据业务已出现了从量变到质变的转变。这振奋人心的一个个数字,促使我们对现有市场和... 详细信息

经历了世界经济滑坡之后,移动通信产业的未来必将成为各设备制造公司及运营公司关注的焦点之一。2001年全球移动通信市场仍然呈现出迅猛的发展势头,数据业务已出现了从量变到质变的转变。这振奋人心的一个个数字,促使我们对现有市场和业务进行深入的分析。本篇文章作为系列文章的开卷篇为我们描绘了未来移动通信业务和市场的宏伟蓝图,提出了诸如“移动数据业务的成功主要取决于消费者和产业链,而不是技术本身”,“业务应用时间应遵循技术引入曲线”等新颖的理论,同时对市场结构的重组提出了指导性的建议,最后对中国运营商所面临的种种挑战进行了剖析。本篇文章对于政府管理部门、网络运营者和业务提供者在策略决策和业务实施上具有很好的指导意义。

关键词：电信业电信运营业移动通信业

The acute lymphoblastic leukemia among Afghan children, Indira Gandhi Children’s Hospital

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Clinical Research Communications 2022年第3期5卷 38-41页

作者： Mohamad Haroon Noori Nasser Ahmad Shinwari Ahmad Mujtaba Barekzai Department of Hematology Spinghar Institute of Higher EducationKabul CampusAfghanistan Department of Pediatric Andhra Gandhi Government Hospital Department of Biotechnology and Microbial Technology Spinghar Institute of Higher EducationKabul CampusAfghanistan Research director Spinghar Institute of Higher EducationKabul CampusAfghanistan Department of Public Health Spinghar Institute of Higher EducationKabul CampusAfghanistan technical Manager of Food Safety providing quality and quantity inspection services for UN-WFPKICAfghanistan

Objective:Almost all leukemia patients died,fortunately now with the advancement of medicine and science and with the advent of treatment Chemotherapy,Radiotherapy,and Surgical treatment 75%of patients with leukemia who need treatment for up to 5 years,live longer than patients with leukemia who do not receive *** the one side,in our country,Afghanistan the number of incidents has increased recently,and on the other side,we do not have data at the national ***,the child health hospital administration considered the necessary and left me to research this case in the last 6 months of ***:This is an observational descriptive study,which observed 10,293 patients that come to the pediatric internal which 300 patients who indicate leukemia,and 200 patients with acute lymphoblastic leukemia(ALL),who were admitted to the oncology service of Andhra Gandhi Child Health Hospital in 2018 the study took ***:Based on the age we detect less than one year’s 10(5%)patients,1-10 years old 150(75%)patients,and more than 10 years old 40(20%)*** on sex,boys were 120(60%)patients and girls 80(40%)*** on clinical findings,anemia 155(77.5%)patients,fever 130(65%)patients,bleeding 90(45%)patients,spleen thickness 88(44%)patients,liver thickness 73(36.6%)patients,lymph nodes thickness 70(35.55%)patients,great pains 66(33%)patients and nervous system disorders 38(19%)***:We can say with great conviction that 200 patients out of 10,293 had acute lymphoblastic *** studies with prospective nature are required to confirm this observation.

关键词： acute lymphoblastic leukemia Afghan children Indira Gandhi Children’s Hospital

Potential of Constructed Wetland for Wastewater Treatment in Rural Areas in Kosovo

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Journal of Hydraulic Engineering 2015年第1期1卷 27-34页

作者： Lavdim Osmanaj Agon Haxhikadrija Pierre-Henri Dodane Astrit Vokshi Department of Wastewater NGO "CDI-Community Development Initiatives " Prishtina 10000 Republic of Kosovo independant Consultant Montperreux France Executive director of NGO "CDI-Community Development Initiatives " Prishtina 10000 Republic of Kosovo

Republic of Kosovo has 1,304 settlements from which only 37 are urban and 1,267 are rural. Shown in percentage, only 39.2% （765,125） of inhabitants live in urban areas. The focus is to work and find the best and cheap solutions for the 60.8% （1,173,370） of inhabitants of the country which live in rural areas. From this number only 42% of them have access to the sewage network while 60.8% of them have implemented individual solutions （latrines） without any treatment, leading to a large pollution of the water bodies. The existing rural sewage networks are built only with septic tanks, poorly designed and do not fulfill the wastewater treatment criteria. Regarding this issue, the Kosovan legislation concerns only urban areas （settlements of more than 2,000 inhabitants） and is expected to be completed in 2014 for rural areas according to the EU （European Union） directive for wastewater discharge. As a pilot project, the CDI （community development initiatives） started with WWTP （waste water treatment plants） based on the Vertical Constructed Wetland option （french model） as it appears to be the most adapted option in this rolling, rural, and temperate climate context, implementing this kind of treatment in 3 villages for the first time in Kosovo. Through this, it is interesting to take a perspective on all the phases of these projects starting from feasibility reports, project design to concept and modalities of implementation and options for operation and maintenance, in order to assess how this technical option is feasible and replicable in the country at a large scale. It finally appears that the potential for constructed wetland in the Balkan region is promising as it provides a simple solution for most of the regional constraints, but requires skills to be developed locally for designing and building as well as a deeper consideration in the national regulation.

关键词： Sanitation WWTP constructed wetland sewage Eastern Europe Balkans.

Function toggle of tumor microenvironment responsive nanoagent for highly efficient free radical stress enhanced chemodynamic therapy

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Nano Research 2022年第9期15卷 8228-8236页

作者： Xueting Yang Shuaitian Guo Li Wang Shanyue Guan Shuyun Zhou Jun Lu State Key Laboratory of Chemical Resource Engineering Beijing University of Chemical TechnologyBeijing 100029China Key Laboratory of Photochemical Conversion and Optoelectronic Materials Technical Institute of Physics and ChemistryChinese Academy of SciencesBeijing 100190China University of Chinese Academy of Sciences Beijing 100190China Beijing Advanced Innovation Center for Soft Mater Science and Engineering Beijing University of Chemical TechnologyBeijing 100029China

In contrast to reactive oxygen species(ROS),the generation of oxygen-irrelevant free radicals is oxygen-and H2O2-independent in cell,which can offer novel opportunities to maximum the chemodynamic therapy(CDT)***,an H2O2-independent“functional reversion”strategy based on tumor microenvironment(TME)-toggled C-free radical generation for CDT is developed by confining astaxanthin(ATX)on the NiFe-layered double hydroxide(LDH)nanosheets(denoted as ATX/LDH).The unique ATX/LDH can demonstrate outstanding TME-responsive C-free radical generation performance by proton coupled electron transfer(PCET),owing to the specific ATX activation by unsaturated Fe sites on the LDH nanosheets formed under ***,the Brönsted base sites of LDH hydroxide layers can promote the generation of neutral ATX C-free radicals by capturing the protons generated in the ATX activation ***,ATX/LDH maintain antioxidant performance to prevent normal tissue cancerization due to the synergy of LDH nanosheets and antioxidative *** addition,C-free radical can compromise the antioxidant defense in cells to the maximum extent,compared with *** free radicals burst under TME can significantly elevate free radical stress and induce cancer cell *** strategy can realize TME-toggled C free radical generation and perform free radical stress enhanced CDT.

关键词： ultrathin layered double hydroxide nanosheets astaxanthin free radical chemodynamic therapy

Temperature tuning of BaGa_(4)Se_(7) optical parametric oscillator

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Chinese Optics Letters 2021年第2期19卷 57-62页

作者： Hui Kong Jintian Bian Jiyong Yao Qing Ye Xiaoquan Sun State Key Laboratory of Pulsed Power Laser Technology National University of Defense TechnologyHefei 230037China Advanced Laser Technology Laboratory of Anhui Province Hefei 230037China technical Institute of Physics and Chemistry Chinese Academy of SciencesBeijing 100190China

The temperature tuning of BaGa_(4)Se_(7)(BGSe)was demonstrated for the first time,to the best of our *** the temperature of BGSe(56.3°,0°)was raised from 30℃ to 140℃,the idler light under type Ⅰ raised from 3637 nm to 3989 nm,the tunable range reached 352 nm,and Δλ_(2)=ΔT reached 3.20 nm/℃.We calculated the phase matching curve of BGSe when Φ and T took different *** relationship between θ and Δλ_(2)=ΔT was obtained by fixing Φ at 0°.The maximum Δλ_(2)=ΔT and its corresponding(θ,Φ)phase matching type were reported under different fixed λ_(2)(3μm,3.2μm,...,5μm).

关键词： temperature tuning BaGa_(4)Se_(7) optical parametric oscillator

Raman Optical Activity and Raman Spectra of Amphetamine Species--Quantum Chemical Model Calculations and Experiments

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American Journal of Analytical Chemistry 2012年第6期3卷 410-421页

作者： Rolf Willestofte Berg Irene Shim Peter Cyril White Salim Abdali Department of Chemistry Technical University of DenmarkLyngbyDenmark ReForensics LincolnUK Biophysical Chemistry Group Department of ChemistryH.C.Orsted Inst.University of CopenhagenCopenhagenDenmark

Theoretical calculations and preliminary measurements of vibrational Raman optical activity (ROA) spectra of different species of amphetamine (amphetamine and amphetamine-H+) are reported for the first time. The quantum chemical calculations were carried out as hybrid ab initio DFT-molecular orbital calculations by use of the Gaussian 03W program, based on complete geometry minimizations of the conformational energy of the S-(+)-amphetamine molecule, the S-(+)-amphetamine-H+ ion, and the R-(–)-amphetamine molecule. Following this, harmonic frequency calculations have been made, providing information about the cation vibrational bands, expected in salts of single anions (chlorides) as well as in salts of anions with internal bonds (sulfates, hydrogen phosphates, etc.). It shows that the kind of anion should be given better attention, as so far it has often not been the case, when the spectra are employed for identification purposes. The DFT calculations show that the most stable conformations are those allowing for close contact between the aromatic ring and the amine hydrogen atoms. The internal rotational barrier within the same amphetamine enantiomer has a considerable influence on the Raman and ROA spectra. As predicted the experimental ROA spectra were found to depend on the chirality. Two street samples, provided by the London Police, were also measured and compared to the calculated ROA spectra. The street samples were found to contain different enantiomers of the protonated amphetamine-H+ sulfate. According to the present study the AMPH+ ion in aqueous sulfate solution seems to adopt a conformation in which the phenyl and ammonium groups are in transpositions, similar to what has been found in the solid state.

关键词： Amphetamine Raman ROA DFT Molecular Orbital Drugs Forensic

Renewable and Nonrenewable Energy Flow Resiliency for Day-to-Day Production and Consumption

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Journal of Energy and Power Engineering 2022年第1期16卷 13-18页

作者： Bahman Zohuri Farhang Mossavar-Rahmani Masoud Moghaddam Ageno School of Business Golden Gate UniversitySan FranciscoCalifornia 94105USA Galaxy Advanced Engineering San MateoCalifornia 94401USA Professor of Finance and director of MBA School of Business and Management National UniversitySan DiegoCalifornia 92123USA ***

Energy resilience is about ensuring a business and end-use consumers have a reliable,regular supply of energy and contingency measures in place in the event of a power failure,generating a source of power such as electricity for daily needs from an uninterrupted source of energy no matter either renewable or *** of resilience issues include power surges,weather,natural disasters,or man-made accidents,and even equipment *** human operational error can also be an issue for grid-power supply to go down and should be factored into resilience *** the energy landscape undergoes a radical transformation,from a world of large,centralized coal plants to a decentralized energy world made up of small-scale gas-fired production and renewables,the stability of electricity supply will begin to affect energy *** must plan for this *** challenges that the growth of renewables brings to the grid in terms of intermittency mean that transmission and distribution costs consume an increasing proportion of *** progress in the technology of AI(Artificial Intelligence)integration of such progressive technology in recent decades,we are improving our resiliency of energy flow,so we prevent any unexpected interruption of this *** your business is energy resilient helps insulate against price increases or fluctuations in supply,becoming critical to maintaining operations and reducing commercial *** the form short TM(technical Memorandum),this paper covers this issue.

关键词： Resilience system energy flow energy storage energy grid BI(business intelligence) AI cyber security decision making in real-time machine learning and deep learning BD(big data)and cloud-based servers for repository and storage of data