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Wearable Triboelectric Nanogenerators Based on Printed Polyvinylidene Fluoride Films Incorporated with Cobalt-Based Metal-Organic Framework for Self-Powered Mobile Electronics

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Energy & Environmental Materials 2024年第4期7卷 396-403页

作者： Myeong-Hyeon Kim Sang-Joon Park Tae-Jun ha Department of Electronic Materials Engineering Kwangwoon UniversitySeoul 01897Korea

In this study,wearable triboelectric nanogenerators comprising bar-printed polyvinylidene fluoride(PVDF)films incorporated with cobalt-based metal-organic framework(Co-MOF)were *** enhanced output performance of the TENGs was attributed to the phase transition of PVDF from a-crystals toβ-crystals,as facilitated by the incorporation of the *** synthesis conditions,including metal ion,concentration,and particle size of the MOF,were optimized to increase open-circuit voltage(VOC)and open-circuit current(I_(SC))of PVDF-based *** addition to high operational stability,mechanical robustness,and long-term reliability,the developed TENG consisting of PVDF incorporated with Co-MOF(Co-MOF@PVDF)achieved a VOC of 194 V and an I_(SC)of 18.8μ***,the feasibility of self-powered mobile electronics was demonstrated by integrating the developed wearable TENG with rectifier and control units to power a global positioning system(GPS)*** local position of the user in real-time through GPS was displayed on a mobile interface,powered by the battery charged through friction-induced electricity generation.

关键词： bar printing phase transition polyvinylidene fluoride incorporated with cobalt-based metal-organic framework self-powered mobile electronics wearable triboelectric nanogenerators

An Automatically Filtering Blacklist Model of Social Network Based on Semantic Web

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Journal of harbin Institute of Technology(New Series) 2014年第6期21卷 67-73页

作者： Le ha Guo-Zi Sun College of Computer Nanjing University of Posts & Telecommunications Jiangsu High Technology Research Key Laboratory for Wireless Sensor Networks

According to the features of the semantic web technology,it is very suitable to solve the security issue of the current social network ***,in this paper,it extends the existing ontology model of the social network with some relevant classes,and introduces a brand new ontology which is used to represent the malicious *** introducing these models,a method of identifying the malicious message is ***,the experiments and simulations analyze the feasibility of the whole *** results validate that the malicious users can be automatically filtered,and some worthy digital evidence can be effectively provided to forensic investigators.

关键词： social network semantic web ontology OWL digital evidence

Localized Electrochemical Impedance Spectroscopy Study on the Corrosion Behavior of Fe-Cr Alloy in the Solution with Cl^- and SO_4^(2-)

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Journal of Wuhan University of Technology(Materials Science) 2012年第1期27卷 27-32页

作者： XIAO Kui ZhaNG Xin D0NG Chaofang WEI Dan WANG Chen LI Xiaogang Advanced Material and Technology Institute University of Science&Technology BeijingBeijing 100083China Society Service Center China Association for Science and TechnologyBeijing 100081China Faculty of Metallurgical and Energy Engineering Kunmming University of Science and TechnologyKunming 650093China

The corrosion behaviors of Fe-Cr alloy under three different pH values solutions with C1- and SO42- were investigated by localized electrochemical impedance spectroscopy （LEIS） measurements and the corrosion products were analyzed by laser Raman spectrometry. The results show that the high corrosion resistance of Fe-Cr Alloy is attributed to a passive film which is formed more easily when the alloy contains a large quantity of Cr element. However, its corrosion resistance varies in the solutions with different pH values, especially in the initial corrosion. The average impedance values in neutral and alkaline solution are much higher than that in acidic solution because the passive film is more likely to dissolve in the acidic condition. Moreover, the destructive effect of C1- and SO42 ions on the passive film is also demonstrated in corrosion process through the change of the impedance value with the steeping time.

关键词： Fe-Cr Alloy localized electrochemical impedance spectroscopy (LEIS) corrosionproducts Raman spectroscopy

Detection of Chlamydophila psittaci from feral pigeons in environmental samples:problems with currently available techniques

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Integrative Zoology 2010年第1期5卷 63-69页

作者： Ila GEIGENFEIND Daniel ha AG-WACK ERNAGEL Department of Biomedicine Institute of AnatomyUniversity of BaselBaselSw itzerland

Chlamydophila psittaci(Lillie,1930)Everett et al.,1999,the pathogenic agent of human ornithosis,is widespreadin feral pigeon populations and many cases of transmission from feral pigeons to humans have been *** of the present study was to detect *** in environmental samples to find out more about possibletransmission routes and,therefore,to assess the zoonotic risk for *** samples were collected from nestboxes in a feral pigeon ***,samples were taken from the feather dust film covering the water surface ofpublic fountains where pigeons regularly *** samples were tested for the presence of chlamydial antigenusing an antigen enzyme-linked immunosorbent assay to prove shedding of *** by feral *** testdetects a genus specific lipopolysaccharide in the outer membrane of the chlamydial *** were testedusing the IDEIA PCE Chlamydia Test kit(DakoCytomation)and positive results were verified with IDEIA ChlamydiaBlocking Reagents(DakoCytomation).The IDEIA PCE Chlamydia Test yields a high proportion of positive ***,when IDEIA Chlamydia Blocking was performed,most of the positive results turned out to be negative orcould not be *** conclude that antigen-enzyme-linked immunosorbent assay tests are not suitable fordetecting *** in environmental *** publications where no blocking test was used should bereconsidered critically.

关键词： antigen-enzyme-linked immunosorbent assay Chlamydophila psittaci Columba livia environmen-tal samples zoonosis

Role and Mechanisms of Actions of Thyroid Hormone on the Skeletal Development

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Bone Research 2013年第2期1卷 146-161页

作者： ha-Young Kim Subburaman Mohan Musculoskeletal Disease Center Loma Linda VA HealthCare System Departments of Medicine Loma Linda University Division of Endocrinology Department of Internal MedicineWonkwang University Sanbon Hospital

The importance of the thyroid hormone axis in the regulation of skeletal growth and maintenance has been well established from clinical studies involving patients with mutations in proteins that regulate synthesis and/or actions of thyroid hormone. Data from genetic mouse models involving disruption and overexpression of components of the thyroid hormone axis also provide direct support for a key role for thyroid hormone in the regulation of bone metabolism. Thyroid hormone regulates proliferation and/or differentiated actions of multiple cell types in bone including chondrocytes, osteoblasts and osteoclasts. Thyroid hormone effects on the target cells are mediated via ligand-inducible nuclear receptors/transcription factors, thyroid hormone receptor （TR） a and ~, of which TRa seems to be critically important in regulating bone cell functions. In terms of mechanisms for thyroid hormone action, studies suggest that thyroid hormone regulates a number of key growth factor signaling pathways including insulin-like growth factor-I, parathyroid hormone related protein, fibroblast growth factor, Indian hedgehog and Wnt to influence skeletal growth. In this review we describe findings from various genetic mouse models and clinical mutations of thyroid hormone signaling related mutations in humans that pertain to the role and mechanism of action of thyroid hormone in the regulation of skeletal growth and maintenance.

关键词： thyroid hormone bone cartilage growth factors bone cells

Optimal Spatial Allocation of Initial Attack Resources for Firefighting in the Republic of Korea Using a Scenario Optimization Model

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Journal of Mountain Science 2014年第2期11卷 323-335页

作者： Yohan LEE Byungdoo LEE Kyung ha KIM Korea Rural Economic Institute 117-3 Hoegi-ro Dongdeamun-guSeoul 130-710 South Korea Korea Forest Research Institute Hoegiro 57 Dongdaemun-guSeoul 130-712 South Korea

【Title】 This study explores the optimal spatial allocation of initial attack resources for firefighting in the Republic of Korea. To improve the effectiveness of Korean initial attack resources with a range of policy goals, we create a scenario optimization model that minimizes the expected number of fires not receiving a predefined response. In this study, the predefined response indicates the number of firefighting resources that must arrive at a fire before the fire escapes and becomes a large fire. We use spatially explicit GIS-based information on the ecology, fire behavior, and economic characterizations important in Korea. The data include historical fire events in the Republic of Korea from 1991 to 2007, suppression costs, and spatial information on forest fire extent. Interviews with forest managers inform the range of we address in the decision model. Based on the geographic data, we conduct a sensitivity analysis by varying the parameters systematically. Information on the relative importance of the components of the settings helps us to identify “rules of thumb” for initial attack resource allocations in particular ecological and policy settings.

关键词： Spatial allocation Initial attack Firefighting The Republic of Korea Senario optimization

Clinical Application of Bioprosthesis in China:Current Status and Future

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Current Medical Science 2019年第4期39卷 523-525页

作者： Yin WANG Wei-wei JIANG Nian-guo D0NG Department of Cardiovascular Surgery Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022China Department of Gastroenterology Union HospitalTongji Medical CollegeHuazhong University of Science and TechnologyWuhan 430022China

China is one of the countries which have a high incidence of heart valvular disease,but the use of biological valve is limited in China before because the majority of patients are young patients suffering from rheumatic heart *** biological valve has a good application prospect in *** the one hand,the new generation of biological valves have been significantly improved in the aspects of anti-calcification treatment,anti-metabolism,material quality control,valve frame mechanics design,and leaflet sewing technology,and the application effect is improved;on the other hand,surgeons should adapt to the new concept changes,and correctly understand and rationally apply biological valves,master valve repair,atrial fibrillation ablation and other techniques,combined with interventional,minimally invasive techniques,etc.,according to the specific conditions of the disease and choose the surgery type to ensure the patients5 long-term life quality.

关键词： biological valve valve surgery clinical application China

Base editing: a novel cure for severe combined immunodeficiency

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Signal Transduction and Targeted Therapy 2023年第10期8卷 4433-4435页

作者： Teng-Cheong ha Michael Morgan Axel Schambach Institute of Experimental Hematology Hannover Medical SchoolHannover30625Germany REBIRTH Research Center for Translational Regenerative Medicine Hannover Medical SchoolHannover30625Germany Division of Hematology/Oncology Boston Children’s HospitalHarvard Medical SchoolBostonMA02115USA

In a recent Cell article,McAuley,Kohn et *** proof-of-principle of a promising gene therapy(GT)approach to correct the underlying genetic defect responsible for CD3δ-deficient severe combined immunodeficiency(SCID)using a CRISPR-Cas9-derived adenine-base-editor(ABE).1 This ground-breaking and important study could impact future GTs for monogenic diseases by providing novel tailored therapeutic options(Fig.1).

关键词： immunodeficiency al. diseases

Predicting Concrete Compressive Strength Using Deep Convolutional Neural Network Based on Image Characteristics

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Computers, Materials & Continua 2020年第10期65卷 1-17页

作者： Sanghyo Lee Yonghan Ahn ha Young Kim Division of Architecture and Civil Engineering Kangwon National UniversitySamcheok-si25913Korea School of Architecture and Architectural Engineering Hanyang University ERICAAnsan-si15588Korea Graduate School of Information Yonsei UniversitySeoul03722Korea

In this study,we examined the efficacy of a deep convolutional neural network(DCNN)in recognizing concrete surface images and predicting the compressive strength of concrete.A digital single-lens reflex(DSLR)camera and microscope were simultaneously used to obtain concrete surface images used as the input data for the ***,training,validation,and testing of the DCNNs were performed based on the DSLR camera and microscope image *** of the analysis indicated that the DCNN employing DSLR image data achieved a relatively higher *** accuracy of the DSLR-derived image data was attributed to the relatively wider range of the DSLR camera,which was beneficial for extracting a larger number of ***,the DSLR camera procured more realistic images than the ***,when the compressive strength of concrete was evaluated using the DCNN employing a DSLR camera,time and cost were reduced,whereas the usefulness ***,an indirect comparison of the accuracy of the DCNN with that of existing non-destructive methods for evaluating the strength of concrete proved the reliability of DCNN-derived concrete strength *** addition,it was determined that the DCNN used for concrete strength evaluations in this study can be further expanded to detect and evaluate various deteriorative factors that affect the durability of structures,such as salt damage,carbonation,sulfation,corrosion,and freezing-thawing.

关键词： Deep convolutional neural network(DCNN) non-destructive testing(NDT) concrete compressive strength digital single-lens reflex(DSLR)camera microscope