Results 11 to 20 of about 1,547,004 (264)

Temperature fluctuations in the intergalactic medium [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2002
The temperature of the low-density intergalactic medium is set by the balance between adiabatic cooling resulting from the expansion of the universe, and photo-heating by the UV-background. We have analysed the Lyman-alpha forest of eleven high-resolution quasar spectra using wavelets, and find strong evidence of a marked jump in the temperature at the
Theuns, T.   +4 more
openaire   +4 more sources

What is the temperature of a granular medium? [PDF]

open access: yesJournal of Physics: Condensed Matter, 2005
In this paper we discuss whether thermodynamical concepts and in particular the notion of temperature could be relevant for the dynamics of granular systems. We briefly review how a temperature-like quantity can be defined and measured in granular media in very different regimes, namely the glassy-like, the liquid-like and the granular gas.
A Baldassarri   +5 more
openaire   +4 more sources

Studies of the Thermovoltaic Effect in Semiconductors in the Medium Temperature Range

open access: yesИзвестия высших учебных заведений России: Радиоэлектроника, 2020
Introduction. A conversion of thermal energy into electrical energy is an urgent task. The thermovoltaic effect (TVE) found in samarium sulfide (SmS ) makes it possible to solve a higher efficiency problem as compared with classical thermoelectric ...
Vladimir V. Kaminskiy   +5 more
doaj   +1 more source

A Two‐Temperature Model of the Intracluster Medium [PDF]

open access: yesThe Astrophysical Journal, 1998
We investigate evolution of the intracluster medium (ICM), considering the relaxation process between the ions and electrons. According to the standard scenario of structure formation, ICM is heated by the shock in the accretion flow to the gravitational potential well of the dark halo.
openaire   +2 more sources

Temperature measurement in the flowing medium [PDF]

open access: yesMATEC Web of Conferences, 2018
The article deals with a brief description of methods of temperature measurements in a flowing water steam. Attention is paid to the measurement of pseudo static temperature by a single sealed thermocouple entering the flowing liquid through the flown-by wall. Then three types of probes for stagnation temperature measurement are shown, whose properties
Sedlák Kamil, Fialová Lenka
openaire   +2 more sources

Impact of Sintering Temperature of the Mechanical Properties of a Fe20Cr20Mn20Ni20Ti10Co5V5 Medium Entropy Alloy

open access: yesAfrican Journal of Inter-Multidisciplinary Studies, 2023
Medium entropy alloys (MEAs) are new emerging engineering alloys comprising four principal elements characterised by a low enthalpy of mixing and entropies of formation between 1 and 1.5 molar gas constant.
Steadyman Chikumba   +1 more
doaj   +1 more source

Comprehensive analysis of the variables influencing the techno-economic optimization of medium temperature linear Fresnel collectors

open access: yesEnergy Reports, 2021
A Linear Fresnel Collector (LFC) is a solar concentrating technology with high potential for improvements and therefore significant cost reduction. However, LFC optimization studies found in literature show little agreement regarding optimal geometry. In
Freddy Ordóñez   +2 more
doaj   +1 more source

In-Medium QCD Forces at High Temperature [PDF]

open access: yesStrong Coupling Gauge Theories in the LHC Perspective (SCGT12), 2014
We derive the quantum dynamics of heavy quark systems in quark-gluon plasma as open quantum systems. The scatterings of a heavy quark with the hard medium particles give rise to Debye screened QCD force and drag force and its fluctuation. We present a unified quantum description of these in-medium QCD forces at high temperature in the leading-order ...
openaire   +2 more sources

Control Method of Cold and Hot Shock Test of Sensors in Medium

open access: yesSensors, 2023
In order to meet the latest requirements for sensor quality test in the industry, the sample sensor needs to be placed in the medium for the cold and hot shock test.
Jinming Tian   +4 more
doaj   +1 more source

Tablet Disintegratability: Sensitivity of Superdisintegrants to Temperature and Compaction Pressure

open access: yesPharmaceutics, 2022
Tablet disintegration is an important pre-requisite for drug dissolution and absorption. The disintegration test is typically conducted at 37 °C, but the intragastric temperature may vary due to meals or fever.
Audrey Yi Zheng   +2 more
doaj   +1 more source

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