236 Hits in 11.6 sec

Towards the next generation of high-fidelity simulators for online computing: adaptive modelling through the scales

Pierre Kerfriden
2019 Zenodo  
and physically detailed numerical simulations, with a particular emphasis on reliability assessment for composite materials and fracture.  ...  This thesis introduces and summarises research contributions that aim to help bridge this gap, through the development of robust model reduction approaches to control the cost associated with multiscale  ...  CutFEM method for unilateral contact [22] This paper is one of the first applications of CutFEM for the simulation of composite structures with imperfect contact conditions.  ... 
doi:10.5281/zenodo.3404685 fatcat:qj3nv253bnhdrn366s2wowmud4

Analysis of Materials and Modern Technologies for PDC Drill Bit Manufacturing

L. Ya. Ropyak, T. O. Pryhorovska, K. H. Levchuk
2020 Uspehi Fiziki Metallov  
The article presents a review of PDC (polycrystalline diamond composite) drill bit manufacturing technologies and used metals in order to provide surface quality and accuracy as well as to attract a wider  ...  range of scientists to find new technologies and improve current ones in the field of oil and gas production.  ...  Levchuk study of stress state and performance of the drilling equipment • elements, including the finite element method; study of complex shaped workpiece quality. • At the same time, certain issues are  ... 
doi:10.15407/ufm.21.02.274 fatcat:cei4x7fyavg35gusadyhb4hg4a

An efficient finite element method for embedded interface problems

John Dolbow, Isaac Harari
2009 International Journal for Numerical Methods in Engineering  
We focus on developing a computationally efficient finite element method for interface problems. Finite element methods are severely constrained in their ability to resolve interfaces.  ...  We propose an approach that facilitates such an independent representation by embedding interfaces in the underlying finite element mesh.  ...  It can be seen as representing the hydraulic head or temperature if flow in porous media or thermal problems were studied, respectively.  ... 
doi:10.1002/nme.2486 fatcat:tvnjqvcmtndsnka6pb6u2k5cra

Design of a shape-optimized metallic nanoheater

Arnab Dewanjee, Daniel F. V. James, Mohammad Mojahedi
2013 Optical Society of America. Journal A: Optics, Image Science, and Vision  
Also, the transfer of this generated thermal energy is dependent on the surface area of the object in contact with the surrounding medium.  ...  We have used a parallel genetic algorithm (GA) in conjunction with a coupled electromagnetic (FDTD) and thermodynamic modeling of the metallic nanostructures for the optimization.  ...  A number of such numerical techniques exist for solving multi-variable differential equations, among which the Method of Moments (MoM), the Finite Element Method (FEM) and the Finite Difference Time-Domain  ... 
doi:10.1364/josaa.30.000671 pmid:23595327 fatcat:sh53vccrinbjtgvyxah3lmympq

Seawater intrusion processes, investigation and management: Recent advances and future challenges

Adrian D. Werner, Mark Bakker, Vincent E.A. Post, Alexander Vandenbohede, Chunhui Lu, Behzad Ataie-Ashtiani, Craig T. Simmons, D.A. Barry
2013 Advances in Water Resources  
This review presents the state of knowledge in SI research, compares classes of methods for assessing and managing SI, and suggests areas for future research.  ...  Despite this, knowledge gaps exist in SI process understanding, in particular associated with transient SI processes and timeframes, and the characterization and prediction of freshwater-saltwater interfaces  ...  freshwater unfit for drinking.  ... 
doi:10.1016/j.advwatres.2012.03.004 fatcat:z7ipqxfnfrcinldu52wmo65jzi

Software-based representation of selected benchmark hierarchies equipped with publically available data

Marcus Bannenberg, Patricia Barral, Jean-David Benamou, Federico Bianco, Andreas Binder, Sören Dittmer, Daniel Fernández Comesaña, Michele Girfoglio, Michael Günther, José Carlos Gutiérrez Pérez, Lena Hauberg-Lotte, Wilbert Ijzerman (+23 others)
2019 Zenodo  
These will be equipped with publically available data and will be used for training in modelling, model testing, reduced order modelling, error estimation, efficiency optimization in algorithmic approaches  ...  Based on the multitude of industrial applications, benchmarks for model hierarchies will be created that will form a basis for the interdisciplinary research and for the training programme.  ...  DOLFIN is the highly optimized computational back-end written in C++ responsible for finite-element machinery.  ... 
doi:10.5281/zenodo.3474967 fatcat:by5nwr624jaqnbvc3iky6wzsua

Spatial Analysis of Groundwater Hydrochemistry through Integrated Multivariate Analysis: A Case Study in the Urbanized Langat Basin, Malaysia

Nur Fatihah Mohamad Zainol, Azim Haziq Zainuddin, Ley Juen Looi, Ahmad Zaharin Aris, Noorain Mohd Isa, Anuar Sefie, Ku Mohd Kalkausar Ku Yusof
2021 International Journal of Environmental Research and Public Health  
The study will help in the understanding of the groundwater quality issue and serve as a reference for other basins with similar characteristics.  ...  Classification of the groundwater facies indicated that the studied groundwater belongs to the Na-Cl with saline water type and Na-HCO3 with mix water type characteristics.  ...  Special thanks and gratitude to all fellow research members, the staff of the Faculty of Forestry and Environment, and the National Water Research Institute of Malaysia for their assistance and guidance  ... 
doi:10.3390/ijerph18115733 pmid:34071804 fatcat:4yg2ssl7dbcfxadptnoxxazu2u

Соответствие систем менеджмента в топливно-энергетическом комплексе стандартам: анализ заинтересованности руководства в оценке

Илья Лившиц
2020 Менеджмент качества  
Many legends, stories and poems, in particular, composed by representatives of the people about the founder of Islam, the prophet of Mohammed, which tells of his extraordinary childhood friendship with  ...  ACKNOWLEDGEMENTS The author wishes that thank professors of North-Caucasus Federal University in particular T. Schebzuhova, I. Pershin, and A. Malkov for helpful discussions.  ...  THE TASK FOR OPTIMIZATION The specific optimization problem may be related to the type of problems of the static optimization of the control processes occurring in the steady state.  ... 
doi:10.36627/2619-1385-2020-2-2-156-162 fatcat:od3gaqgsg5crlcqg4jqmb7r72e

Genetic glass ceilings: transgenics for crop biodiversity

2008 ChoiceReviews  
The ratio of fluorescence emission at the optimal wavelengths for each probe reflects the ratio of the abundance of that sequence in the probes for each element of the microarray.  ...  The excellent control was the key to resistance problems.  ... 
doi:10.5860/choice.45-6156 fatcat:jowc443fojfnhgj4a3vsy532uy

Penilaian Kualiti Laporan EIA Dalam Aspek Kajian Hakisan Tanah [article]

Abdul Mahmud
2020 Figshare  
Study shows that, there are weaknesses among the developer in terms of implementing erosion anda sedimentation control measures.  ...  The scale of measurement 0 to 5 has been used to rating score quality for each item. 35 samples of EIA report for housing projects from the year 2012 to 2016 were evaluated.  ...  Optimization for pH was then carried out by using optimized amount of glucose, optimized amount of yeast with different pH in optimized day.  ... 
doi:10.6084/m9.figshare.12095736 fatcat:fzsit3wyqjc3fni4no4zzopz5e

An overview of advances in biomass gasification

Vineet Singh Sikarwar, Ming Zhao, Peter Clough, Joseph Yao, Xia Zhong, Mohammad Zaki Memon, Nilay Shah, Edward J. Anthony, Paul S. Fennell
2016 Energy & Environmental Science  
The article reviews diverse areas of conventional and advanced biomass gasification discussing their feasibility and sustainability vis-à-vis technological and socio-environmental impacts.  ...  Clough thanks the EPSRC for funding a DTA studentship and J. Yao thanks Imperial College for funding a studentship. We also thank Ms Shujuan Zhang for her assistance.  ...  as the gasifying media, coupled with in situ CO 2 capture by CaO.  ... 
doi:10.1039/c6ee00935b fatcat:pzu7tqlcbnd3bc5nvl5gdmkhty

Modern Applied Science, Vol. 3, No. 2, February 2009, all in one file

Editor MAS
2009 Modern Applied Science  
exhibited significantly greater value (288 -1500%) over the treatments and control (Figure 6a) .  ...  , respectively which clearly indicated that the rate of water flow is a paramount important, largely influencing the photocatalysis reaction process of TiO 2 and UV with antibiotics in water medium possibly  ...  The results emphasise that for adsorption from surfactant mixtures, it is necessary to take into account the changes in the CMC with changes in composition.  ... 
doi:10.5539/mas.v3n2p0 fatcat:4bjvcqfu5jg7bbzxcjoq477gcy


2022 Zenodo  
They are then placed in a crucible and mixed and placed in a furnace at a temperature of 400 °C for 2 hours in order for the solid state reaction to take place to form the composite.  ...  As the pH of the solution in contact with the mineral is reduced below the pHpzc, the surface of the mineral becomes positively charged.  ...  In this work, the synthesized CdS-NiO nanoparticles are blended with CNT to get the composite. This novel composite showed effective photocatalytic degradation of methyl violet dye.  ... 
doi:10.5281/zenodo.6384186 fatcat:kmgejxnhgbajzesymttd5pnnge

Optimisation of Graphite-Matrix Composites for Collimators in the LHC Upgrade

Jorge Guardia-Valenzuela, Raul Arenal, Alessandro Bertarelli
2021 Zenodo  
A broad spectrum of candidate elements to replace mol [...]  ...  This calls for the development of novel advanced materials.  ...  Acknowledgements When I started working on the subject of graphite-based materials for particle accelerators, I did not know how complex is to collide particles and in particular nor did I know how complex  ... 
doi:10.5281/zenodo.5837351 fatcat:ohgray27dnh2jexzvu5piu4npu

Porous silicon multilayer antireflection coating for solar cells; process considerations

Josefine H. Selj, Erik Stensrud Marstein, Annett Thøgersen, Sean Erik Foss
2011 Physica Status Solidi. C, Current topics in solid state physics  
Sunding at University of Oslo for XPS imaging.  ...  Acknowledgements Acknowledgments This work has been funded by the Research Council of Norway through the project "Thin and highly efficient silicon-based solar cells incorporating nanostructures," NFR  ...  As the four point probe is unfit to measure at the sample edges a quantitative measure of the sheet resistance outer rim of the wafer is not obtained.  ... 
doi:10.1002/pssc.201000033 fatcat:2o5wvtqqlngvnemedl24ndhqae
« Previous Showing results 1 — 15 out of 236 results