检索结果-南通市图书馆

Deep Geothermal: The ‘Moon Landing' Mission in the Unconventional Energy and Minerals Space

Journal of Earth Science 2015年第1期26卷 2-10页

作者： Klaus Regenauer-Lieb Andrew Bunger Hui Tong Chua Arcady Dyskin Florian Fusseis Oliver Gaede Rob Jeffrey Ali Karrech Thomas Kohl Jie Liu Vladimir Lyakhovsky Elena Pasternak Robert Podgorney Thomas Poulet Sheik Rahman Christoph Schrank Mike Trefry manolis veveakis Bisheng Wu David A.Yuen Florian Wellmann Xi Zhang School of Petroleum Engineering University of New South WalesSydney NSW 2052Australia Earth Science and Resource Engineering CSIROKensington WA 6151Australia School of Earth and Environment The University of Western AustraliaPerth WA 6000Australia Department of Civil and Environmental Engineering & Department of Chemical and Petroleum Engineering University of PittsburghPittsburghPennsylvaniaUSA School of Geosciences University of EdinburghEdinburghUK Science and Engineering Faculty School of EarthEnvironmental and Biological SciencesEarth SystemsQueensland University of TechnologyBrisbaneAustralia Karlsruhe Institute of Technology KarlsruheGerman School of Earth Science and Geological Engineering Sun Yat-Sen University Geological Survey of Israel Jerusalem 95501Israel Idaho National Laboratory Idaho FallsUSA Land and Water CSIROFloreat Park WA 6014Australia School of Environmental Studies China University of Geosciences Department of Earth Sciences and Minnesota Supercomputing Institute University of MinnesotaMinneapolis MN 55455USA Aachen Institute for Advanced Study in Computational Engineering Science (AICES) RWTH Aachen University52062 AachenGermany

Deep geothermal from the hot crystalline basement has remained an unsolved frontier for the geothermal industry for the past 30 years. This poses the challenge for developing a new unconventional geomechanics approach to stimulate such reservoirs. While a number of new unconventional brittle techniques are still available to improve stimulation on short time scales, the astonishing richness of failure modes of longer time scales in hot rocks has so far been overlooked. These failure modes represent a series of microscopic processes： brittle microfracturing prevails at low temperatures and fairly high deviatoric stresses, while upon increasing temperature and decreasing applied stress or longer time scales, the failure modes switch to transgranular and intergranular creep fractures. Accordingly, fluids play an active role and create their own pathways through facilitating shear localization by a process of time-dependent dissolution and precipitation creep, rather than being a passive constituent by simply following brittle fractures that are generated inside a shear zone caused by other localization mechanisms. We lay out a new theoretical approach for the design of new strategies to utilize, enhance and maintain the natural permeability in the deeper and hotter domain of geothermal reservoirs. The advantage of the approach is that, rather than engineering an entirely new EGS reservoir, we acknowledge a suite of creep-assisted geological processes that are driven by the current tectonic stress field. Such processes are particularly supported by higher temperatures potentially allowing in the future to target commercially viable combinations of temperatures and flow rates.

关键词： geothermal energy enhanced geothermal systems fracture mechanics creep dissolution precipitation.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Modelling of Short-Timescale Lithospheric Geodynamics from weeks onwards

Modelling of Short-Timescale Lithospheric Geodynamics from w...

引用

2014年中国地球科学联合学术年会——国际专题（2）Microseismic Monitoring and Inversion

作者： David A.Yuen Yuri Podladchikov Gabriele Cambiotti Roberto Sabadini manolis veveakis Klaus Regenauer Lieb B.Xiujiao Wang Dept. of Earth Sciences University of Minnesota School of Environmental Studies Chinese University of Geosciences Dept. of Earth and Environmental Sciences University of Lausanne Dept. of Earth Sciences University of Milan School of Engineering University of New South Wales Institute of Geology and Geophysics Chinese Academy of Sciences

Knowledge concerning geodynamical phenomena over a short-timescale has grown tremendously in the past 25 years because of the introduction of geodetic measurements driven by GPS and InSAR technology and satellite observations,*** and Topex *** acquisition of these data have forced geodynamicists to develop more refined mathematical models to explain the phenomena of episodic earthquake tremors(ETS)the temporal variations of the Earth’s topography and geoid fields,and the short-term scale movements of the Earth’s rotational axis(TPW or true polar wander),excited by the extremely large earthquakes,greater than Mw=8.5,which occurred in the past 20 *** have increased tremendously our understanding of geodynamical forces for short and intermediate short-timescales.

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

Energy Expenditure of Adolescents During Overground Walking and Running

引用

Journal of Science in Sport and Exercise 2023年第1期5卷 44-52页

作者： manolis Adamakis School of Education University College CorkCorkIreland Department of Education and Social Work University of LuxembourgLuxembourgLuxembourg

This study aimed to determine the net energy expenditure(EENET)required for overground walking and running 1200 m in a sample of healthy adolescent boys and girls.A secondary purpose was to describe the effect of body composition on energy expenditure(EE)of walking versus *** healthy adolescents(9 boys,11 girls)aged 15.85±2.80 years performed 2 field tests in regular outdoor conditions:overground walking(1.64±0.17 m/s)and submaximal running(3.13±0.42 m/s),at a self-selected steady *** was measured via indirect *** sample t-tests were used to determine if there were differences between walking and running conditions and mean percentage differences were estimated for various physiological *** in EENET between conditions were performed for both genders using a two(condition)by two(gender)analysis of variance repeated measures design,with fat free mass as a *** increased by 90.43%between the 2 conditions,while the different components of EE increased by almost 20%.Running elicited a significantly greater EENET than walking for both genders;however,boys’and girls’EE did not differ *** EENET was adjusted for fat free mass,there was a statistically significant condition×fat free mass *** findings in this study indicate that both adolescent boys and girls expend more energy during running than walking,without being affected by body *** mass and fat free mass significantly correlated with EE only during *** addition,the trained participants of the study optimized locomotion to minimize EE.

关键词： Caloric cost Mode of exercise Fat free mass Body mass Net energy expenditure Physical activity Heart rate

来源：

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

Statistical analysis on the influence of mechanical parameters in the vibration of pylons

引用

Earthquake Engineering and Engineering Vibration 2023年第1期22卷 263-278页

作者： Georgios I.Dadoulis George D.manolis Laboratory for Experimental Mechanics Department of Civil EngineeringAristotle UniversityThessaloniki 54124Greece

We present a statistical investigation of the degree of influence that assumptions made in relation to the mechanical parameters of a pylon have on its ground-induced *** study is set up by using as a key kinematic variable the displacement at the top of a reference,a stand-alone pylon with a uniform cross-section and fixity at its ***,statistics are produced using a dimensionless displacement ratio defined between the‘parental’and the‘subsidiary’cases,the latter defined for the pylon(a)resting on compliant soil,(b)having an attached top mass,and(c)being non-uniform with ***,two materials are examined,namely,steel and reinforced concrete(R/C).More specifically,this displacement ratio is independent of the excitation and plays the role of a transfer function between the base and the top of the *** horizontal and vertical motions are considered,and the equations of motion are solved in the frequency *** ensuing statistical analysis is conducted for the following parameter combinations:(a)pylon founded on soft,intermediate,and stiff soil;(b)low,intermediate,and high-mass ratios of the attached mass to the pylon′s mass;(c)a constant and quadratic degree of pylon tapering with *** correlation coefficients are calculated for all the above combinations to arrive at statistical results that establish validity bounds and quantify the degree of influence of each assumption on the pylon′s response.

关键词： pylons statistical analysis spearman coefficients structural vibrations elastic waveguides attached masses soil springs tapering

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Assessment of water-induced soil erosion as a threat to cultural heritage sites:the case of Chania prefecture,Crete Island,Greece

引用

Big Earth Data 2022年第4期6卷 561-579页

作者： Christos Polykretis Dimitrios D.Alexakis manolis G.Grillakis Athos Agapiou Branka Cuca Nikos Papadopoulos Apostolos Sarris Laboratory of Geophysical-Satellite Remote Sensing and Archaeo-environment(Geosat ReSeArch) Institute for Mediterranean StudiesFoundation for Research and Technology-HellasCreteGreece School of Environmental Engineering Technical University of CreteChaniaCreteGreece Department of Civil Engineering and Geomatics Cyprus University of TechnologyLimassolCyprus Department of Architecture Built Environment and Construction EngineeringMilanItaly Digital Humanities Geoinformatics Lab Archaeological Research UnitDepartment of History and ArchaeologyUniversity of CyprusNicosiaCyprus

Among the environmental threats,the intensification of natural hazards,such as soil erosion may threaten the integrity and value of cultural heritage *** this framework,the present study’s main objective was to identify archaeological sites susceptible by soil erosion,taking the case study of Chania prefecture in Crete *** sensed and other available geospatial datasets were analyzed in a GIS-based empirical model,namely Unit Stream Power Erosion and Deposition(USPED),to estimate the average annual soil loss and deposition rates due to waterinduced erosion in the study *** resultant erosion map was then intersected with the locations and surrounding zones of the known archaeological sites for identifying the sites and the portions of their vicinity being at *** results revealed that Chania prefecture and its cultural heritage are significantly affected by both soil loss and deposition *** the two processes,soil loss was found to be more intensive,influencing a larger part of the prefecture(especially to the west)as well as a higher amount of archaeological *** extreme and high soil loss classes were also detected to cover the most considerable portion of the sites’surrounding *** identification of the archaeological sites being most exposed to soil erosion hazard can constitute a basis for cultural heritage managers in order to take preventive preserva-tion measures and develop specific risk mitigation strategies.

关键词： Cultural heritage soil erosion USPED model GIS Crete

来源：

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

What blockchain can do for power grids?

引用

Blockchain(Research and Applications) 2021年第1期2卷 15-28页

作者： Magda Foti manolis Vavalis University of Thessaly Volos38221Greece

The aim of this work is to provide an up-to-date comprehensive review of the peer-reviewed articles,the research projects and the entrepreneurial efforts that consider the utilization of blockchain technology in the energy sector in general and the power grid in *** our review study we systematically classify existing applications of blockchain technology in the energy sector according to their field of *** comprehensive and holistic picture provided aims to contribute to the body of knowledge of the applicability of blockchain technology within the energy sector and pave the way for further research in this field.

关键词： Energy Power grid Blockchain Distributed ledger technology Review

来源：

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

Direct adaptive regulation of unknown nonlinear systems with analysis of the model order problem

引用

Journal of Zhejiang University-Science C(Computers and Electronics) 2011年第1期12卷 1-16页

作者： Dimitrios THEODORIDIS Yiannis BOUTALIS manolis CHRISTODOULOU Department of Electrical and Computer Engineering Democritus University of Thrace Department of Industrial Informatics Technological Education Institute of Kavala Chair of Automatic Control University of Erlangen-Nuremberg Department of Electronic and Computer Engineering Technical University of Crete Dipartimento di Automatica et Informatica Politecnico di Torino

A new method for the direct adaptive regulation of unknown nonlinear dynamical systems is proposed in this paper,paying special attention to the analysis of the model order *** method uses a neurofuzzy (NF) modeling of the unknown system,which combines fuzzy systems (FSs) with high order neural networks (HONNs).We propose the approximation of the unknown system by a special form of an NF-dynamical system (NFDS),which,however,may assume a smaller number of states than the original unknown *** omission of states,referred to as a model order problem,is modeled by introducing a disturbance term in the approximating *** development is combined with a sensitivity analysis of the closed loop and provides a comprehensive and rigorous analysis of the stability *** adaptive modification method,termed ‘parameter hopping’,is incorporated into the weight estimation algorithm so that the existence and boundedness of the control signal are always *** applicability and potency of the method are tested by simulations on well known benchmarks such as ‘DC motor’ and ‘Lorenz system’,where it is shown that it performs quite well under a reduced model order ***,the proposed NF approach is shown to outperform simple recurrent high order neural networks (RHONNs).

关键词： Neuro-fuzzy systems Direct adaptive regulation Model order problems Parameter hopping

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

引用

Frontiers of Nursing 2022年第3期9卷 285-293页

作者： Michael Rovithis Argyroula Kalaitzaki Sofia Koukouli Nikos Rikos Martha Kelesi Georgia Fasoi manolis Linardakis Areti Stavropoulou Department of Nursing School of Health SciencesHellenic Mediterranean UniversityCrete 71410Greece Department of Social Work School of Health SciencesHellenic Mediterranean UniversityCrete 71410Greece Department of Nursing School of Health and Care SciencesUniversity of West AtticaAthens 12243Greece Department of Social Medicine Faculty of MedicineUniversity of CreteHeraklion 70013Greece

Objective:To determine the levels of burnout among Greek nurses during the first wave of Coronavirus disease 2019(COVID-19)pandemic and to investigate the relationship among levels of burnout,satisfaction and concern about information,personal protection equipment(PPE),and safety for ***:A cross-sectional study was *** were collected by using the Burnout subscale of the Greek version of the Professional Quality of Life *** concerning satisfaction and concern about information,PPE,and safety for COVID-19 were *** sampling method was *** statistics and multiple linear regression analysis were applied,and distributions were tested for their symmetry using Bloom’s ***:The sample comprised of 301 nurses working in public and private hospitals in Greece.A moderate level of burnout was found among the Greek nurses(mean=29.95,±4.75).Regarding satisfaction and concern about information,PPE,and safety for COVID-19,nurses expressed overall low satisfaction with a mean score of 1.96(±0.77),and high levels of concern with a mean score of 3.19(±0.85).Increased satisfaction regarding the information provided was significantly associated with decreased levels of burnout(β=-1.32,P<0.001),and increased concern for COVID-19 was significantly associated with increased levels of burnout(β=0.83,P=0.010).Conclusions:Greek nurses expressed low satisfaction concerning information,PPE,and safety for COVID-19 and high levels of concern of possible COVID-19 ***,a moderate level of burnout was found.

关键词： Burnout syndrome COVID-19 nurses satisfaction quality

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Arsenic speciation in fish from Greek coastal areas

引用

Journal of Environmental Sciences 2017年第6期29卷 300-312页

作者： Ioanna Kalantzi Kyriaki Mylona Katerina Sofoulaki manolis Tsapakis Spiros A.Pergantis Institute of Oceanography Hellenic Centre for Marine Science(HCMR)PO Box 2214Heraklion 71003CreteGreece Environmental Chemical Processes Laboratory Department of ChemistryUniuersity of CreteHeraklion 71003CreteGreece

Arsenic speciation analysis was conducted on fish samples （sardine and anchovy） collected from six areas along the Greek coastline, i.e. Artemisium Straits, Thermaikos Gulf, Amvrakikos Gulf, Strymonian Gulf, Thracian Sea, and Elefsina Gulf. Total arsenic levels ranging from 11.8 to 62.6 mg As/kg dry weight were determined. Arsenobetaine, a non-toxic form of arsenic, was found to be the main arsenic species, present at 8.6 to 58.8 mg As/kg dry weight, accounting for 67--95% of the total arsenic. Also detected in all fish samples was dimethylarsinic acid, although at considerably lower concentrations, ranging from 0.072-3.956 mg As/kg dry weight. Monomethylarsonic acid was detected at low levels in all anchovy samples, and only in sardines from one area. Finally, inorganic arsenic in the form of arsenate was detected only in fish at one area, indicating the possible effect of an environmental parameter on its presence at detectable amounts. Statistical analysis revealed the environmental variables, such as salinity, total organic carbon and nitrogen, ammonium, phosphate, total phosphorus, dissolved oxygen and pressure index, are potentially correlated to As species concentrations. Furthermore, based on factor analysis, the biological parameters, such as fish weight, lipids, protein and ash content, that are correlated to As species concentrations of fish were also identified. The interrelationship of arsenobetaine and dimethylarsinic acid concentrations within each fish species was evaluated.

关键词： Arsenic speciationArsenobetaineDimethylarsinic acidArsenateFishEnvironmental and biologicalparameters

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Purkait’s triangle revisited:role in sex and ancestry estimation

引用

Forensic Sciences Research 2022年第3期7卷 440-455页

作者： MennattAllah Hassan Attia Mohamed Hassan Attia Yasmin Tarek Farghaly Bassam Ahmed El-Sayed Abulnoor Sotiris K.manolis Ruma Purkait Douglas H.Ubelaker Forensic Medicine&Clinical Toxicology Department Faculty of MedicineAlexandria UniversityAlexandriaEgypt Institute for Intelligent Systems Research and Innovation Deakin UniversityVictoriaAustralia Biomedical Engineering Medical Research InstituteAlexandria UniversityAlexandriaEgypt Diagnostic Radiology Faculty of MedicineAlexandria UniversityAlexandriaEgypt Fixed Prosthodontics Faculty of DentistryFayoum UniversityFaiyumEgypt Animal&Human Physiology Faculty of BiologyNational&Kapodistrian University of AthensAthensGreece Department of Anthropology University of AllahabadAllahabadIndia Department of Anthropology Smithsonian InstitutionWashingtonDCUS

Identification of unknown remains recovered from marine and terrestrial locations is a significant humanitarian *** investigation proposes a simple method applicable to fragmentary femora for a more refined level of ancestry and/or sex *** that end,we re-examined Purkait’s triangle which involves three inter-landmark distances between the traction epiphyses and the articular rim of femoral head.A large sample(n=584)from geographically diverse(Egyptian,Indian and Greek)populations was ***,shape(n=3)and trigonometrically derived variables and ratios(n=9 variables)were employed to detect any geographically-clustered morphological differences between these *** forest modelling(RFM)and linear discriminant function analysis(LDA)were employed to create classification models in instances where sex was known or *** sample was apportioned into training and test sets with a ratio 70/*** classification accuracies were evaluated by means of k fold cross-validation *** sex estimation,RFM showed similar performance to ***,RFM outperformed LDA in ancestry *** estimation was satisfactory in the Indian and Egyptian samples albeit the Greek sample was *** Greek samples presented greater morphological overlap with the Indian sample due to high within-group *** samples were accurately assigned to their ancestral category when sex was ***,higher classification accuracies in the validation sample were obtained in the sex-specific model of females than in *** RFM and the linear variables,the overall accuracy reached 83%which is distributed as 95%,71%and 86%for the Egyptian,Indian and Greek females,respectively;whereas in males,the overall accuracy is 72%and is distributed as 58%,87%and 50%for the Egyptian,Indian and Greek males,*** accuracies were also calculated per group in the test data using the 12 derived *** the f

关键词： Forensic sciences forensic anthropology Purkait’s triangle fragmentary femora ancestry estimation random forest modelling international forensic investigations

来源：

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

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：