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Fire resistance evaluation through synthetic fire tests and generative adversarial networks

Frontiers of Structural and Civil Engineering 2024年第4期18卷 587-614页

作者： AybikeÖzyükselÇiftçioğlua M.Z.Naser Department of Civil Engineering Manisa Celal Bayar University45140Türkiye School of Civil&Environmental Engineering and Earth Sciences(SCEEES) Clemson UniversityClemsonSC 29631USA Artificial Intelligence Research Institute for Science and Engineering(AIRISE) Clemson UniversityClemsonSC 29631USA

This paper introduces a machine learning approach to address the challenge of limited data resulting from costly and time-consuming fire experiments by enlarging small fire test data sets and predicting the fire resistance of reinforced concrete *** approach begins by creating deep learning models,namely generative adversarial networks and variational autoencoders,to learn the spatial distribution of real fire *** then use these models to generate synthetic tabular samples that closely resemble realistic fire resistance values for reinforced concrete *** generated data are employed to train state-of-the-art machine learning techniques,including Extreme Gradient Boost,Light Gradient Boosting Machine,Categorical Boosting Algorithm,Support Vector Regression,Random Forest,Decision Tree,Multiple Linear Regression,Polynomial Regression,Support Vector Machine,Kernel Support Vector Machine,Naive Bayes,and K-Nearest Neighbors,which can predict the fire resistance of the columns through regression and *** learning analyses achieved highly accurate predictions of fire resistance values,outperforming traditional models that relied solely on limited experimental *** study highlights the potential for using machine learning and deep learning analyses to revolutionize the field of structural engineering by improving the accuracy and efficiency of fire resistance evaluations while reducing the reliance on costly and time-consuming experiments.

关键词： deep learning fire resistance generative adversarial networks machine learning

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Supporting the scientific advancement from pathogenic microorganisms biobank

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Biosafety and Health 2022年第5期4卷 283-284页

作者： Zisis Kozlakidis io Hong Cheong Qiang Wei Laboratory Services and Biobank Group International Agency for Research on Cancer(IARC)World Health Organization(WHO)France State Key Laboratory of oncogenes and Related Genes Centre for Single-Cell OmicsSchool of Public HealthShanghai Jiao Tong University School of MedicineShanghai 200025China National Pathogen Resource Centre Chinese Center for Disease Control and PreventionBeijing 102206China

Biobanks have emerged in the last two decades as foundational research infrastructures supporting scientific *** are organized collections and providers of high-quality and research-ready biospecimens as they can authenticate,preserve,and offer independent access to biological materials,such as specimens and cultures of pathogenic *** most cases,biospecimens will be standardized and prepared in multiple aliquots for long-term storage so that future researchers can use them as new technologies and knowledge evolve.

关键词： supporting evolve authentic

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Temperature-and thickness-dependence of robust out-of-plane ferroelectricity in CVD grown ultrathin van der Waals a-In2Se3 layers

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Nano Research 2020年第7期13卷 1897-1902页

作者： Weng Fu io Shuoguo Yuan Sin Yi Pang Lok Wing Wong Jiong Zhao Jianhua Hao Department of Applied Physics The Hong Kong Polytechnic UniversityHong KongChina

Two-dimensional(2D)ferroelectric materials with unique structure and extraordinary optoelectrical properties have attracted intensive research in the field of nanoelectronic and optoelectronic devices,such as optical sensors,transistors,photovoltaics and non-volatile memory ***,the transition temperature of the reported ferroelectrics in 2D limit is generally low or slightly above room temperature,hampering their applications in high-temperature electronic ***,we report the robust high-temperature ferroelectricity in 2D a-In2Se3,grown by chemical vapor depostion(CVD),exhibiting an out-of-plane spontaneous polarization reaching above 200℃.The polarization switching and ferroelectric domains are observed in In2Se;nanoflakes in a wide temperature *** coercive field of the CVD grown ferroelectric layers ilustrates a room-temperature thickness dependency and increases drastically when the film thickness decreases;whereas there is no large variance in the coercive field at dfterent termperature from the samples with identical *** results show the stable ferroelectricit of In2Se3 nanoflakes maintained at high temperature and open up the opportunities of 2D materials for novel applications in high-temperature nanoelectronic devices.

关键词： ln2Se3 two-dimensional(2D)materials ferroelectricity high-temperature coercive field

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The potential development of drug resistance in rheumatoid arthritis patients identified with p53 mutations

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Genes & Diseases 2023年第6期10卷 2252-2255页

作者： Congling Qiu Joyce Tsz Wai Chan David Wei Zhang io Nam Wong Yaling Zeng Betty Yuen Kwan Law Simon Wing Fai Mok Ivo Ricardo De Seabra Rodrigues Dias Wenfeng Liu Liang Liu Vincent Kam Wai Wong Dr.Neher's Biophysics Laboratory for Innovative Drug Discovery State Key Laboratory of Quality Research in Chinese MedicineMacao University of Science and TechnologyMacao SAR 999078China Department of Public Health and Preventive Medicine School of MedicineJinan UniversityGuangzhouGuangdong 510000China Faculty of Medicine Macao University of Science and TechnologyMacao SAR 999078China School of Biotechnology and Health Sciences Wuyi UniversityJiangmenGuangdong 529000China

Rheumatoid arthritis(RA)is a chronic inflammatory disease characterized by cartilage and bone damage with the presence of pannus formation which causes uncontrollable proliferation and invasion of fibroblast-like synoviocytes(FLS).Since rheumatoid arthritis is a chronic disorder,the patients normally need to undergo prolonged antirheumatic treatment with the use of disease-modifying antirheumatic drugs(DMARDs),steroids,and nonsteroidal anti-inflammatory drugs(NsaIDs).The efficacy of such long-term pharmaceutical intervention can be significantly affected by the development of drug *** pathological relationship between rheumatoid arthritis and cancer hinted that some chemotherapeutic drugs,such as methotrexate(MTX),could be used for RA *** idea was reinforced by the analysis of mutations in p53 tumor suppressor *** 50%of p53 somatic mutations observed from various cancers are also identified in the synovium of RA patients1(Fig.1A).of note,the hyperplastic synovium in RA with overexpressed p53 mutants contributed to the destruction of joints in patients with erosive RA.

关键词： patients drugs rheumatoid

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俄罗斯东部地区的能源业:地区特征与脱碳

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西伯利亚研究 2024年第3期51卷 5-18页

作者： [俄]Б.I.萨涅耶 A.Д.索科洛夫 И.io.伊万诺娃 A.I.科尔涅耶夫 Γ.Γ.拉奇科夫 E.Л.马苏克 P.И.穆兹丘克 C.Л.波波夫 Л.H.塔卡什维利杨欣玥(译) 俄罗斯科学院西伯利亚分院Д.A.梅连季耶夫能源系统研究所俄罗斯科学院西伯利亚分院Д..A.梅连季耶夫能源系统研究所实验室俄罗斯科学院西伯利亚分院Д.A.梅连季耶夫能源系统研究所“亚洲能源基础设施”国际研究中心吉林大学东北亚研究院

鉴于俄罗斯燃料动力综合体技术的演进态势,俄联邦东部地区能源发展状况研究呈现出显著的复杂性与综合性。在地缘政治局势和对俄制裁压力带来的新挑战下,俄东部地区的特殊性和重要性愈发凸显。面对国际社会及俄联邦政府的经济脱碳要求,... 详细信息

鉴于俄罗斯燃料动力综合体技术的演进态势,俄联邦东部地区能源发展状况研究呈现出显著的复杂性与综合性。在地缘政治局势和对俄制裁压力带来的新挑战下,俄东部地区的特殊性和重要性愈发凸显。面对国际社会及俄联邦政府的经济脱碳要求,需对燃料动力综合体及能源系统发展的评估进行相应调整。深入分析俄联邦东部能源系统运行的地区特征,确定影响燃料动力综合体地区生产结构发展、能源消耗、交通基础设施建设、向亚太地区国家出口能源,以及向偏远地区用户供应能源效率的关键因素。明确俄东部地区能源系统在经济社会、基础设施、部门、燃料动力平衡及环境气候方面的关联性特征,并在制定能源低碳转型发展策略进程中予以充分考量。原文发表于俄罗斯《地区:经济学与社会学》杂志2023年第4期①,经作者同意在《西伯利亚研究》以中文刊发。

关键词：燃料动力综合体能源基础设施燃料动力平衡国内生产总值能耗燃料动力资源消耗污染物排放温室气体能源合作

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Resolution pattern of jaundice among children presenting with severe malaria in rural South-West Nigeria

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Asian Pacific Journal of Tropical Biomedicine 2012年第7期2卷 551-553页

作者： osonuga oA osonuga A osonuga AA osonuga io Department of Pharmacology and Physiology University of Cape Coast School of Medical Sciences University of Cape Coast Department of Nursing University of Cape Coast olabisi onabanjo University Remo Campus

objective:To compare the pattern of jaundice resolution among children with severe malaria treated with quinine and ***:Thirty two children who fulfilled the inclusion criteria were recruited for the study from two hospitals with intensive care *** were divided into two groups:'Q' and 'A',receiving quinine and *** was assessed by clinical ***:Sixteen out of 32 children recruited(representing50%) presented with jaundice on the dav of *** mean age was(7.00±2.56) *** day 3,tour patients in 'A' and six patients in 'o' had *** day *** child had ***:The study has shown that hoth drugs resolve jaundice although artemether relatively resolves it faster by the third day.

关键词： Jaundice Quinine Artemether Severe malaria South-west Nigeria

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A regionalized io-model to value seasonal recreational ecosystem services in a mountain National Park in Spain

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Journal of Mountain Science 2022年第1期19卷 211-227页

作者： Víctor MARTIN BARRoSo Mónica de CASTRo-PARDo Pascual FERNÁNDEZ MARTÍNEZ João C.AZEVEDo Department of Applied Economics I and history and economic institutions Faculty of Law and Social SciencesUniversidad Rey Juan CarlosCampus of VicálvaroTulipanMóstoles 28933Spain Department of Financial and Actuarial Economics and Statistics-Statistics and operational Research Complutense University of MadridCampus of SomosaguasPozuelo de Alarcon 28223Spain Centro de Investigação de Montanha Instituto Politécnico de BragançaCampus de Santa ApolóniaBragança 5300-253Portugal

Recreational Ecosystem Services(RES)are among the most frequently evaluated ecosystem *** are seen as a major opportunity for sustainable development in areas of high ecological value resulting from the presence of emblematic species,habitats or scenery,often integrated in conservation areas,in particular in mountain areas affected by depopulation,rising environmental risks and ***,the assessment of RES has been based on Contingent Valuation and Choice Experiments,methods with limitations related to their ***,Input-output(io)models provide a very accurate and effective way of valuation of RES with regional information regarding interindustry *** data on nature tourist expenditure may be only available annually,tourism inflows have a strong seasonal behavior,which impacts the profitability of several local economic *** this paper,we firstly constructed a novel regionalized io-model based on Cross-Industry Location Quotients using employment data and,secondly,based on Monte Carlo simulation,we estimated nature tourist expenditure monthly using data on nature tourism *** method allowed for a more precise RES evaluation,estimating direct,indirect and induced monthly economic impacts of nature-based *** method was applied to the ordesa and Monte Perdido(oMP)National Park in the Spanish *** estimate the average tourist expenditure,we collected and analyzed spending on commerce,hospitality and restaurants,leisure,and transport of 385 *** suggest that using a regionalized io model leads to a considerable reduction of over-estimation of the economic impact of tourist expenditure estimated by conventional *** into consideration the direct,indirect and induced effects of tourist expenditure in 2016-2018,the total annual output effect in the oMP National Park amounted to€208.8 million,while the total income effect amounted to€86.29 ***,a total of

关键词： Input-output Monte Carlo Simulation Location quotients Recreational Ecosystem Services Nature tourism Sustainable mountain development

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Effect of artemether on hematological parameters of healthy and uninfected adult Wistar rats

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Asian Pacific Journal of Tropical Biomedicine 2012年第6期2卷 493-495页

作者： osonuga io osonuga oA osonuga A onadeko AA osonuga AA Department of Physiology Olabisi Onabanjo University Department of Pharmacology Olabisi Onabanjo University School of Medical Sciences University of Cape Coast Department of Nursing University of Cape Coast

objective:To evaluate the effect of short term artemether administration on some blood parameters in adult male Wistar ***:Sixty five albino rats with body weight of 190-220 g were used for the four-phased study. The animals were randomly divided into five groups. The first-four groups of 15 rats were further divided into 3 subgroups of 5 rats. The drug was administered orally at sub-optimal, therapeutic, and high doses of 25, 50 and 75 mg/kg bw,respectively to the rats for 1 day, 2 days and 3 days. Blood samples were collected by cardio-puncture from the rats for hematology at the end of each phase. The last group served as control,and they were given waterad ***:Artemether caused significant reduction(Pof the hematological profile of the animals in a dose dependent manner. Discontinuation of the drug use however showed gradual recovery of the depressed indices of the blood ***:The results suggest that artemether can induce reversible changes in hematological profiles of rats by extension man. This can probably aggravate anemia when artemether is administered to malaria patients. Hence, the study supports the use of the drug with cautione specially in patients prone to anemic tendencies.

关键词： Artemether Anemia Antimalaria Hematology Hematological profile Malaria Anemic tendency

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Fabrication of 3D air-core MEMS inductors for very-highfrequency power conversions

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Microsystems & Nanoengineering 2018年第1期4卷 509-517页

作者： Hoa Thanh Le io Mizushima Yasser Nour Peter Torben Tang Arnold Knott Ziwei ouyang Flemming Jensen Anpan Han National Center for Micro-and Nanofabrication DanchipTechnical University of Denmark2800 Kongens LyngbyDenmark Department of Electrical Engineering Technical University of Denmark2800 Kongens LyngbyDenmark IPU Nils Koppels Allé2800 Kongens LyngbyDenmark

We report a fabrication technology for 3D air-core inductors for small footprint and very-high-frequency power *** process is scalable and highly generic for fabricating inductors with a wide range of geometries and core *** demonstrate spiral,solenoid,and toroidal inductors,a toroidal transformer and inductor with advanced geometries that cannot be produced by wire winding *** inductors are embedded in a silicon substrate and consist of through-silicon vias and suspended *** inductors fabricated with 20 and 25 turns and 280-350μm heights on 4-16 mm2 footprints have an inductance from 34.2 to 44.6 nH and a quality factor from 10 to 13 at frequencies ranging from 30 to 72 *** air-core inductors show threefold lower parasitic capacitance and up to a 140% higher-quality factor and a 230% higher-operation frequency than silicon-core inductors.A 33 MHz boost converter mounted with an air-core toroidal inductor achieves an efficiency of 68.2%,which is better than converters mounted with a Si-core inductor(64.1%).our inductors show good thermal cycling stability,and they are mechanically stable after vibration and 2-m-drop tests.

关键词： MEMS inductor PwrSoC TSVs very high frequency 3D

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Sexual Behaviour and Contraceptive Usage of Secondary School Adolescents in Ibadan, Nigeria

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Journal of Reproduction and Contraception 2007年第4期18卷 279-288页

作者： A oladokun io Morhason-Bello CA Enakpene KM owonikoko Jo Akinyemi KA obisesan Department of obstetrics & Gynaecology University College Hospital Ibadan Nigeria Department of Epidemiology Medical Statistics and Environmental Health College of Medicine University of Ibadan Nigeria

objective To determine the prevalence and pattern of sexual activity as well as the contraceptive practices among the selected secondary school adolescents in Ibadan, Nigeria. Methods A descriptive cross-sectional study was conducted among the selected senior secondary school students in Ibadan, following a stratified multistage random sampling technique. Results There were 695 respondents out of which the females constituted 51% and the males were 49%. Less than one third （28.3%） of the respondents have had previous sexual exposure at the time of the study. The median age of sexual debut among the sexually exposed was 15 years in both the males and the females. Bivariate analysis of sociodemographic characteristics of respondents with previous sexual exposure showed that, sex, religion, father＇s and mother＇s educational background and level of class were statistically significant（P〈0. 001）. Further analysis using logistic regression model revealed that male respondents were 3 times more likely than females （95% CI 1.92-4.56） to have had sexual experience while those whose mother had tertiary educational background were less likely to have had previous sexual experience compared with those with secondary and lower educational background （oR= 1.76, 95% CI 1.11-2.77）. of all the sociodemographic characteristics of respondents considered with the age of sexual partners using bivariate analysis showed that only level of class was significant （P=0. 018）. Less than half of the sexually active males （44.2%） were using various methods of contraception, while 54.4% of the sexually active females were using different types of modern methods.Conclusion It is quite obvious that risky sexual behaviours are in practice among the secondary school students studied and by extension in the country. It therefore means that reproductive health issues especially concerning the adolescents will have to be openly discussed by all with our youths while abstinence/chastity should be

关键词： adolescents sexual health contraceptive usage

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