Results 161 to 170 of about 13,002,222 (403)

Smooth-Particle Phase Stability with density and density-gradient potentials

open access: yes, 2005
Stable fluid and solid particle phases are essential to the simulation of continuum fluids and solids using Smooth Particle Applied Mechanics. We show that density-dependent potentials, such as Phi=(1/2)Sum (rho-rho_0)^2, along with their corresponding ...
Carol G. Hoover   +3 more
core   +1 more source

The Density of Chlorine [PDF]

open access: yesNature, 1880
THE article on the density of chlorine, bromine, and iodine at high temperatures which appeared in NATURE, vol. xxi. p. 461, places before your readers in the clearest manner the present condition of this important question. The conclusion hinted at in the closing sentences of the article, viz.
openaire   +2 more sources

Are exposures to ready-to-eat food environments associated with type 2 diabetes? A cross-sectional study of 347 551 UK Biobank adult participants

open access: yesThe Lancet Planetary Health, 2018
Summary: Background: Rapid urbanisation and associated socioeconomic transformations have modified current lifestyles, shifting dietary preferences towards ready-to-eat, calorie-dense food of poor nutritional quality.
Chinmoy Sarkar, PhD   +2 more
doaj  

Review of Conductive Reciprocating Liquid Metal Magnetohydrodynamic Generators

open access: yesEnergies
Reciprocating liquid metal magnetohydrodynamic (MHD) power generation is a new MHD power generation method in which the working fluid is a single-phase liquid metal with a low melting point and high conductivity.
Lingzhi Zhao, Aiwu Peng
doaj   +1 more source

Unlocking the potential of tumor‐derived DNA in urine for cancer detection: methodological challenges and opportunities

open access: yesMolecular Oncology, EarlyView.
Urine is a rich source of biomarkers for cancer detection. Tumor‐derived material is released into the bloodstream and transported to the urine. Urine can easily be collected from individuals, allowing non‐invasive cancer detection. This review discusses the rationale behind urine‐based cancer detection and its potential for cancer diagnostics ...
Birgit M. M. Wever   +1 more
wiley   +1 more source

Tail Densities of Skew-Elliptical Distributions [PDF]

open access: yesarXiv, 2019
Skew-elliptical distributions constitute a large class of multivariate distributions that account for both skewness and a variety of tail properties. This class has simpler representations in terms of densities rather than cumulative distribution functions, and the tail density approach has previously been developed to study tail properties when ...
arxiv  

Invariance of density correlations with charge density in polyelectrolyte solutions

open access: yes, 2003
We present a theory for the equilibrium structure of polyelectrolyte solutions. The main element is a simple, new optimization scheme that allows theories such as the random phase approximation (RPA) to handle the harsh repulsive forces present in such ...
Donley, James P.   +2 more
core   +1 more source

A Tutorial on the One-Dimensional Theory of Electron-Beam Space-Charge Effect and Steady-State Virtual Cathode

open access: yesPlasma
The space-charge effects of pulsed high-current electron beams are very important to high-power particle beam accelerators and high-power microwave devices.
Weihua Jiang
doaj   +1 more source

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