Results 81 to 90 of about 1,422,419 (283)

Determination of Effective Permittivity and Permeability of Metamaterials from Reflection and Transmission Coefficients

, 2002
We analyze the reflection and transmission coefficients calculated from transfer matrix simulations on finite lenghts of electromagnetic metamaterials, to determine the effective permittivity and permeability.
A. M. Nicholson, B. Gralak, C. M. Soukoulis, D. R. Smith, D. R. Smith, D. R. Smith, F. Mariotte, H. Kosaka, J. B. Pendry, J. B. Pendry, J. B. Pendry, M. Notomi, P. Markoš, P. Markoš, P. Markoš, R. A. Shelby, S. Schultz, V. G. Veselago, W. B. Weir   +18 more
core   +1 more source

One-dimensional fluid diffusion induced by constant-rate flow injection: Theoretical analysis and application to the determination of fluid permeability and specific storage of a cored rock sample [PDF]

, 2004
We describe the conceptual design and first application of a new method for simultaneously measuring the fluid permeability and specific storage of a rock sample.
B. T. Ngwenya, Biot, Brace, Detournay, Esaki, Fournier, Green, Hart, Hsieh, I. G. Main, I. Song, Johnson, Kranz, Kwon, Liang, Lin, Lin, Mok, Morin, Mortensen, N. F. Smyth, N. W. Odling, Neuzil, Olsen, Rice, Roeloffs, S. C. Elphick, Simpson, Simpson, Trimmer, Wong, Wu, Zeynaly-Andabily, Zoback   +33 more
core   +1 more source

Choroid Plexus Enlargement and USPIO‐Based Inflammatory Feature in Cerebral Small Vessel Disease

Annals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective The choroid plexus (CP) is a key component of the blood–cerebrospinal fluid barrier (BCSFB), but its mechanism of action in cerebral small vessel disease (CSVD) remains unclear. This study investigated CP volume (CPV) alterations and their association with conventional imaging markers in CSVD and explored the underlying role of ...
Yongqiang Qu, Xiaoning Ren, Cuihua Fan, Chun Li, Lijie Zhang, Zaiqiang Zhang, Shaowu Li, Zhongmeng Lai, Bin Cai, Ying Fu, Yi Lin, Zhibao Zhu   +11 more
wiley   +1 more source

Reservoir formation conditions and key technologies for exploration and development in Qingcheng large oilfield

Petroleum Research, 2020
The Qingcheng oilfield, the largest shale oil field in China, was discovered in 2019 in source rock of Chang 7 Member of Mesozoic Yanchang Formation, Changqing Oilfield in Ordos Basin, with newly increased proven geological reserves of 358 million tons ...
Suotang Fu, Jinhua Fu, Xiaobing Niu, Shixiang Li, Zhiyu Wu, Xinping Zhou, Jiangyan Liu   +6 more
doaj   +1 more source

Non-crimp fabric permeability modelling [PDF]

, 2008
A qualitative study to the in-plane permeability modelling of Non-Crimp\ud Fabrics has been carried out. A network flow model was developed to describe flow through\ud inter bundle channels (meso level).
Akkerman, R., Haanappel, S.P.
core   +1 more source

Low‐Cost, Large‐Scale Nanoporous Metals by Mechanical Alloying, Oxide Reduction, and Dealloying of Powders

Advanced Engineering Materials, EarlyView.
Powder metal processing provides scalable advantages in nanoporous (np) metal development. Mechanical alloying is used to produce unique precursors for hybrid nanopore formation by oxide reduction and dealloying. As demonstrated in np Ag, this approach improves process efficiency while promoting smaller ligaments and larger pores, both of which are ...
Mark A. Atwater, Oliver A. Fowler
wiley   +1 more source

Physio-Chemical and Mechanical Behaviour of(Pinussylvestris) as Binders on Foundry Core Strength [PDF]

, 2012
The mechanical potential of sand core binders made withPinussylvestris has been examined. Ota silica base sand bonded with 6% of cassava starch in admixed proportion of Pinussylvestris was tested for tensile, compressive strength and permeability to ...
Abdulwahab, M, Fayomi, O. S. I, Gbenebor, O. P, Popoola, A. P. I   +3 more
core  

Packaging of Macroscopic Material Payloads: Needs, Challenges, Concepts, and Future Directions

Advanced Engineering Materials, EarlyView.
This review introduces a unified framework that decomposes any macroscopic packaging system into the payload, packaging material, and packaging strategy and combines them into a conceptual packaging equation: packaging strategy = payload + packaging material.
Venkata S. R. Jampani, Manos Anyfantakis
wiley   +1 more source

A quantitative evaluation for well pattern adaptability in ultra-low permeability oil reservoirs: A case study of Triassic Chang 6 and Chang 8 reservoirs in Ordos Basin

Petroleum Exploration and Development, 2018
: Based on the previous studies and development practice in recent 10 years, a quantitative evaluation method for the adaptability of well patterns to ultra-low permeability reservoirs was established using cluster analysis and gray correlation method ...
Jiyong ZHAO, Xiaoping AN, Jing WANG, Jianming FAN, Xingmei KANG, Xiqun TAN, Wenqing LI   +6 more
doaj   +1 more source

Selective permeability in gels: Beyond the solution-diffusion model [PDF]

, 2019
Permeability, a measure of potential transport of macromolecules through crowded media such as hydrogels, determines important control parameters in bio-soft functional material applications, e.g., for filtration, drug release, and transport of reactants
Kim, Won-Kyu
core