检索结果-南通市图书馆

Assessment of seismic design response factors of concrete wall buildings

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Earthquake Engineering and Engineering Vibration 2011年第1期10卷 115-127页

作者： aman Mwafy Department of Civil and Environmental Engineering United Arab Emirates University

To verify the seismic design response factors of high-rise buildings, five reference structures, varying in height from 20- to 60-stories, were selected and designed according to modern design codes to represent a wide range of concrete wall structures. Verified fiber-based analytical models for inelastic simulation were developed, considering the geometric nonlinearity and material inelasticity of the structural members. The ground motion uncertainty was accounted for by employing 20 earthquake records representing two seismic scenarios, consistent with the latest understanding of the tectonic setting and seismicity of the selected reference region （UAE）. A large number of Inelastic Pushover Analyses （IPAs） and Incremental Dynamic Collapse Analyses （IDCAs） were deployed for the reference structures to estimate the seismic design response factors. It is concluded that the factors adopted by the design code are adequately conservative. The results of this systematic assessment of seismic design response factors apply to a wide variety of contemporary concrete wall buildings with various characteristics.

关键词： concrete wall buildings seismic design response factors fiber-based modeling inelastic pushover analysis incremental dynamic analysis

Assessment of Diversity, Distribution, Conservation status and Preparation of Management Plan for Medicinal Plants in the Catchment Area of Parbati Hydroelectric Project stage-Ⅲ in Northwestern Himalaya

在线全文

学校读者我要写书评

暂无评论

Journal of Mountain science 2007年第1期4卷 34-56页

作者： s.s. samant Jitendra s. Butola aman sharma G.B. Pant Institute of Himalayan Environment and Development Himachal Unit

The developmental activities, particularly the construction of hydroelectric projects are causing a great loss of biodiversity in the Indian Himalayan Region. The Himaehal Pradesh, a part of IHR is well known for the development of hydroelectric projects. The Parbati H.E. Project is amongst the major projects of the state. The different stages of the project are all causing loss of biodiversity of the area. stage Ⅲ of the Parbati H.E. Project is a run of the river scheme on the sainj River downstream of Power House of Parbati H.E. Project stage Ⅱ. The project shall utilize regulated discharge of Parbati H.E. Project stage Ⅱ and inflow of River sainj for power generation, and has been contemplated as a peaking station operating in tandem with stage Ⅱ. The present study has been undertaken to see the impact of hydroelectric project on the biodiversity, particularly on medicinal plants. A total of 104 species of medicinal plants, belonging to different life forms, i.e., trees （23 spp.）, shrubs （22 spp.）, herbs （57 spp.） and ferns （2 spp.） were recorded. The species have been analyzed and studied for their distribution, classification, altitudinal zones, part （s） used, indigenous uses, nativity, endemism and *** parts of these species, such as whole plants, roots （including rhizomes and tubers）, leaves, flowers, fruits, seeds, stems, barks, spikes, nuts and insect galls are used by the inhabitants for curing various diseases and ailments. 3o species are native to the Himalayan region, 9 species native to the Himalayan region and adjacent countries also and 65 species are non-natives. 9 species are near endemics. Considering the whole Himalaya as a biogeographie unit （sensu lato）, the near endemics are endemic to the Himalaya. Among these species, Zanthoxylum armature is categorized as Endangered and Valeriana wallichii as Vulnerable. Hedychium spicatum, Rhus javanica, Berberis lycium, Thalictrum foliolossum, salvia lanata, Rubia cordifolia and Bergenia ligu

关键词： Hydroelectric project dam submergence area management plan medicinal plant diversity native endemic endangered conservation status indigenous uses Indian Himalaya

spectroscopic investigations on Dy^(3+) ions doped zinc lead alumino borate glasses for photonic device applications

在线全文

学校读者我要写书评

暂无评论

Journal of Rare Earths 2019年第1期37卷 52-59,M0004页

作者： Nisha Deopa shubham saini sumandeep Kaur aman Prasad A.s.Rao Department of Applied Physics Delhi Technological University

This paper presents the structural, optical absorption, photoluminescence (PL) and decay spectral properties of Dy^(3+)ions doped zinc lead alumino borate (ZPAB) glasses to elucidate their possible usage in photonic devices such as w-LEDs and lasers. A broad hump shown by the XRD spectrum recorded for an un-doped ZPAB glass confirms its non-crystalline nature. The Judd-Ofelt (J-O) intensity parameter evaluated from the measured oscillator strengths of the absorption spectral features were used to estimate various radiative parameters and also to understand the nature of bonding between Dy^(3+)ions and oxygen ligands. Under 350 nm excitation, the as-prepared glasses are exhibiting two emission bands^4F_(9/2)→~6H_(15/2)(blue),and^4F_(9/2)→~6H_(13/2)(yellow) at 483 and 575 nm,respectively. From the PL spectra,the Y/B ratio values, CIE chromaticity color coordinates and color correlated temperature (CCT) were evaluated. The experimental lifetimes measured from the decay profiles are decreasing with increase in Dy^(3+)ions concentration in these glasses which may be attributed to the cross-relaxation and nonradiative multiphonon relaxation process. Decay profiles observed for higher concentration were well fitted to Inokuti-Hirayama (I-H) model to understand the energy transfer process and subsequent decrease in experimental lifetimes. The higher values of radiative parameters, emission cross-sections,quantum efficiency, optical gain and gain band width suggest the suitability of 0.5 mol%of Dy^(3+) ions in these ZPAB glasses for the photonic device application.

关键词： Glasses J-O parameters Luminescence Inokuti-Hirayama model Energy transfer Rare earths

Influences of different forces on the bubble entrainment into a stationary Gaussian vortex

在线全文

学校读者我要写书评

暂无评论

science China(Physics,Mechanics & Astronomy) 2013年第11期56卷 2162-2169页

作者： ZHANG aman NI BaoYu College of shipbuilding Engineering Harbin Engineering University

simulations of bubble entrainment into a stationary Gaussian vortex are performed by using the combined particle tracking method(PTM)and boundary element method(BEM).Before the bubble is captured by the vortex core,oscillation and migration of the quasi-spherical nucleus are solved by using improved RP equation and the momentum theorem in the Lagrangian reference frame simultaneously,and the trajectory of the nucleus presents a kind of reduced helix *** captured by the vortex core,the bubble grows immediately and moves and deforms along the vortex core *** non-spherical evolution and deformation of the bubble is simulated by adopting a mixed Eulerian-Lagrangian *** output of quasi-spherical stage is taken as the input of non-spherical stage,and all the behaviors of the entrained bubble can be simulated such as inception,motion,deformation and *** results agree well with published experimental *** this basis,the influences of various factors such as viscosity,surface tension,buoyancy are studied *** the results from this paper would provide some insight into the control on vortex bubble entrainment.

关键词： bubble entrainment gaussian vortex trajectory split

Cross Intelligence Evaluation for Effective Emotional Intelligence Estimat

在线全文

学校读者我要写书评

暂无评论

Computers, Materials & Continua 2022年第2期70卷 2489-2505页

作者： Ibrahim Alsukayti aman singh Department of Computer science College of ComputerQassim UniversityBuraydah51452Saudi Arabia Computer science and Engineering Lovely Professional University144411PunjabIndia

Afamous psychologist or researcher,Daniel Goleman,gave a theory on the importance of Emotional Intelligence for the success of an individual’s *** Goleman quoted in the research that“The contribution of an individual’s Intelligence Quotient(IQ)is only 20%for their success,the remaining 80%is due to Emotional Intelligence(EQ)”.However,in the absence of a reliable technique for EQ evaluation,this factor of overall intelligence is ignored in most of the intelligence evaluation *** research presented an analysis based on basic statistical tools along with more sophisticated deep learning *** proposed cross intelligence evaluation uses two different aspects which are similar,i.e.,EQ and sQ to estimate EQ by using a trained model over sQ *** presented analysis ensures the resemblance between the Emotional and social Intelligence of an *** research authenticates the results over standard statistical tools and is practically inspected by deep learning *** Emotional Intelligence Questionnaire-short Form(TEIQue-sF)and social IQ dataset are deployed over aMulti-layered Long-short TermMemory(M-LsTM)based deep learning model for accessing the resemblance between EQ and *** M-LsTM based trained deep learning model registered,the high positive resemblance between Emotional and social Intelligence and concluded that the resemblance factor between these two is more than 99.84%.This much resemblance allows future researchers to calculate human emotional intelligence with the help of social *** flexibility also allows the use of Big Data available on social networks,to calculate the emotional intelligence of an individual.

关键词： Emotional intelligence social intelligence deep learning social IQ dataset multi-layered long short term memory

Detection of digestive malignancies and post-gastrectomy complications via gastrointestinal fluid examination

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Frontiers of Medicine 2017年第1期11卷 20-31页

作者： Lei Huan aman Xu Department of Gastrointestinal surgery the First Affiliated Hospital of Anhui Medical University Hefei 230022 China German Cancer Research Center (DKFZ) Heidelberg Germany Department of General surgery the Fourth Affiliated Hospital of Anhui Medical University Hefei 230022 China

To date, gastric carcinoma （GC） is one of the common and fatal digestive malignancies worldwide. The prognosis of GC is not always satisfactory because of late diagnosis. scholars are keen on discovering novel accurate and economical biomarkers in body liquids for GC screening to detect and evaluate the lesion before the results of imaging techniques are obtained. While traditional serum assays have limited sensitivity and specificity, gastrointestinal juice may provide relevant specific biomarkers because of its close contact with the tumor. Herein, the current progress in the relationship between gastrointestinal fluid analyses and GC is systematically and comprehensively reviewed. The detection of gastric juice pH, fluorescence spectrum, cytology, Helicobacterpylori- associated markers, nitrosamines, conventional tumor markers, amino acids, proteomics, microRNAs, long noncoding RNAs, protein-coding genes, vitamin C, etc., and combination tests of different category markers could provide important diagnostic and prognostic clues for gastrointestinal diseases. Particularly, early GC may be efficiently screened using gastric juice. Gastrointestinal fluid examination could also predict the adverse effects of postgastrectomy, such as pancreatic leakage, fistula, and abscess. Gastric fluid markers should be further studied to reveal the early predicators of malignancy and complications. The methods for obtaining the samples of gastrointestinal juice with minimum incision should also be comprehensively investigated.

关键词： gastrointestinal fluid gastric carcinoma biomarker diagnosis prognosis gastrectomy adverse events

Fast Modification of Microdischarge Emission Bands by Fracture of sugar

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Chinese Physics Letters 2011年第8期28卷 304-306页

作者： sergej aman Juergen Tomas Astreletskii Otto-von-Guericke University MagdeburgP.O.Box 412039106 MagdeburgGermany Institute of Chemical Physics RASKosygina 4Moscow 119991Russia

Intensive light pulses with widths of about 10 ns were observed during the crack propagation by cleavage of crystalline sugar at atmospheric *** observed light pulses were caused by a sequence of gas microdischarges(MDs).The pulses were detected in the UV/VIs and NIR wavelength *** the light pulses appear in the UV/VIs wavelength range,and then after a delay of about 0.4–1.2 ns in the NIR wavelength *** characteristic feature of MDs can be used for the characterization of crack propagation.

关键词： delay sugar Fast

Generalized Backward Doubly stochastic Differential Equations Driven by Lévy Processes with Continuous Coefficients

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

Acta Mathematica sinica,English series 2012年第10期28卷 2011-2020页

作者： Auguste aman Jean Marc OWO UFR de Mathématiques et Informatique Université de Cocody

A new class of generalized backward doubly stochastic differential equations （GBDsDEs in short） driven by Teugels martingales associated with Levy process are investigated. We establish a comparison theorem which al... 详细信息

关键词： Backward doubly stochastic differential equations L@vy processes Teugels martingales comparison theorem continuous and linear growth conditions

The effect of side walls on particles mixing in rotating drums

在线全文

学校读者我要写书评

暂无评论

Particuology 2023年第1期72卷 112-121页

作者： aman Jain Fabien Evrard Berend van Wachem Chair of Mechanical Process Engineering Otto-von-Guericke-University MagdeburgUniversitaetsplatz 2Magdeburg 39106Germany

In this paper, we study the effects of the presence and shape of side walls and of the overall length of rotating cylindrical drums on the mixing of particles with differing sizes by application of the discrete element method (DEM). By varying the semi-axis of the spheroidally shaped side walls and the length of the overall drum, we observe the formation of circulation patterns near the side walls. Although there is a vast amount of literature studying mixing regimes in rotating drums, little is known about the effect of the side walls of the drum on particle mixing. The results of our study demonstrate that introducing curved side walls induces a strong circulation pattern near these side walls, but has, paradoxically, a negative impact on mixing and actually promotes segregation. The cause for this segregation is the difference in velocity of differently sized particles near the curved side walls. Large particles accumulate at the curved side walls, whereas small particles move away from the curved side walls. When the length of the drum is increased, the overall effect of the side walls is decreased, although it does remain observable, even in very large drums.

关键词： Discrete element method Rotating drums Particle mixing side walls of rotating drums