Results 111 to 120 of about 574,337 (298)

Development and Optimization of Osmotically Controlled Asymmetric Membrane Capsules for Delivery of Solid Dispersion of Lycopene

The Scientific World Journal, 2014
The aim of the present investigation is to develop and statistically optimize the osmotically controlled asymmetric membrane capsules of solid dispersion of lycopene.
Nitin Jain, Rashmi Sareen, Neeraj Mahindroo, K. L. Dhar   +3 more
doaj   +1 more source

Local Surface Density of the Galactic Disk from a 3-D Stellar Velocity Sample

, 2003
We have re-estimated the surface density of the Galactic disk in the solar neighborhood within $\pm$ 0.4 kpc of the Sun using parallaxes and proper motions of a kinematically and spatially unbiased sample of 1476 old bright red giant stars from the ...
Chen B., Creze M., D. I. Dinescu, Flynn C., Hargreaves J. C., Kuijken K., Kuijken K., McNamara B. J., Oort J. H., Oort J. H., T. M. Girard, T. V. Borkova, Turon, V. I. Korchagin, van der Kruit P. C., W. F. van Altena   +15 more
core   +1 more source

Connection between the dispersion relation, surfaces of constant energy, and energy bands in solids [PDF]

American Journal of Physics, 1976
The aim of this paper is to exhibit the relationship, for free electrons in two dimensions, between the dispersion relation ε=ε (k) = (h/2/2m)(kx2+ky2), the contours of constant energy, and energy band structures in various directions. It has been found that these results, while well known, are not usually interconnected and presented together for the ...
openaire   +2 more sources

Laser Powder Bed Fusion of Copper–Tungsten Composites for Heat Sink Applications in High‐Power Electronics

Advanced Engineering Materials, EarlyView.
This article demonstrates the successful qualification of a copper–tungsten composite for laser powder bed fusion. The resulting components exhibited high density, high thermal conductivity, and reduced thermal expansion. Heat sinks with complex geometries were successfully manufactured, clearly showcasing the material's potential for additive ...
Simon Rauh, Shashank Deepak Prabhu, Jannik Huber, Lioba Fischer, Gerhard Wolf, Nico Hempel, Peter Mayr   +6 more
wiley   +1 more source

Electronic structure of the (111) and (-1-1-1) surfaces of cubic BN: A local-density-functional ab initio study

, 1999
We present ab initio local-density-functional electronic structure calculations for the (111) and (-1-1-1) surfaces of cubic BN. The energetically stable reconstructions, namely the N adatom, N3 triangle models on the (111), the (2x1), boron and nitrogen
B. Stankiewicz, C. Kress, E. Kaxiras, E. Kaxiras, G. Kern, G. Kern, G. Kresse, G. Kresse, G. Kresse, G. Kresse, G. Makov, H. J. Monkhorst, J. Furthmüller, J. Hafner, J. Neugebauer, K. Kádas, K. Kádas, K. T. Park, R. M. Wentzcovich, R. M. Wentzcovich, W. E. Picket, Y. N. Xu   +21 more
core   +1 more source

Interactions between Molten High‐Silicon Electrical Steels and Carbon‐Bonded MgO Refractories Based on Recyclates

Advanced Engineering Materials, EarlyView.
This study examines how several molten high‐silicon electrical steels interact with both conventional and recycled MgO–C refractories. For this, various immersion experiments are conducted. In addition to infiltration, a number of mechanisms are identified and explained that control the corrosion of the refractory material.
Lukas Neubert, Matheus Roberto Bellé, Anton Yehorov, Anhelina Mospan, Till M. J. Stadtmüller, Seetharaman Sridhar, Christos G. Aneziris, Olena Volkova   +7 more
wiley   +1 more source

Direct numerical experiment on measuring of dispersion relation for gravity waves in the presence of condensate

, 2012
During previous numerical experiments on isotropic turbulence of surface gravity waves we observed formation of the long wave background (condensate). It was shown (Korotkevich, Phys. Rev. Lett. vol.
Korotkevich, Alexander O.
core   +1 more source

Elinvar Materials: Recent Progress and Challenges

Advanced Engineering Materials, EarlyView.
Elinvar materials, exhibiting temperature‐invariant elastic modulus, are critical for precision instruments and emerging technologies. This article reviews recent progress in the field, with a focus on the anomalous thermoelastic behavior observed in key material systems.
Wenjie Li, Yang Ren
wiley   +1 more source

Advancing Research on Biomaterials and Biological Materials with Scanning Electron Microscopy under Environmental and Low Vacuum Conditions

Advanced Engineering Materials, EarlyView.
Herein, environmental scanning electron microscopy (ESEM) is discussed as a powerful extension of conventional SEM for life sciences. By combining high‐resolution imaging with variable pressure and humidity, ESEM allows the analysis of untreated biological materials, supports in situ monitoring of hydration‐driven changes, and advances the functional ...
Jendrian Riedel, Lea Dierker, Antoine Eyram Kwame, Kim Nora Wagner, Jonas J. Unterholzner, Jan‐Henning Dirks, Dorothea Brüggemann   +6 more
wiley   +1 more source

Thermal Surface Properties, London Dispersive and Polar Surface Energy of Graphene and Carbon Materials Using Inverse Gas Chromatography at Infinite Dilution

Molecules
The thermal surface properties of graphenes and carbon materials are of crucial importance in the chemistry of materials, chemical engineering, and many industrial processes.
Tayssir Hamieh
doaj   +1 more source