Results 41 to 50 of about 1,230,916 (170)

Engineering Model of High Pressure Moist Air

open access: yesEPJ Web of Conferences, 2017
The article deals with the moist air equation of state. There are equations of state discussed in the article, i.e. the model of an ideal mixture of ideal gases, the model of an ideal mixture of real gases and the model based on the virial equation of ...
Hyhlík Tomáš
doaj   +1 more source

Direct SMBH Formation Driven by Runaway Stellar Collisions in Globally Unstable Stellar Systems

open access: yesAstronomische Nachrichten, EarlyView.
ABSTRACT The fueling problem addresses the ultimate fate of the reservoirs of gas and stars driven into the deepest gravitational potential wells of galaxies, thus it may contain the Universe's densest concentrations of gas and stars. This raises a key question: does the infalling material collapse directly into a supermassive black hole, or can it ...
Marcelo C. Vergara, Andrés Escala
wiley   +1 more source

An investigation of virial coefficients of gases [PDF]

open access: yes
The most widely used experimental method for studying the forces between pairs of molecules is the determination of the second compressibility virial coefficient, B, defined by: z = Pvm/RT = 1 + B/Vm + C/V2 + . . . For non-polar gases at temperatures
Haworth, William S.
core   +1 more source

Virial Extension for Discrete Data Series

open access: yesSignals
The Virial theorem has been applied with considerable success in various fields of natural sciences. This work proposes an extension of the theorem applied to discrete data series.
Dino Otero   +5 more
doaj   +1 more source

Daniel Berthelot Part I. Contribution to thermodynamics

open access: yesEducación Química, 2018
Daniel Berthelot (1865-1927) did fundamental research on the conductivity of electrolyte solutions, thermodynamics, pyrometry, and photochemistry. In thermodynamics he proved that the limiting density of gases can be used to determine their atomic and ...
Jaime Wisniak
doaj   +1 more source

Ag‐Regulated Cu‐Sites on a Conductive Cu‐Metal‐Organic Framework for Enhanced CO2 Electroreduction to CH4

open access: yesEcoEnergy, EarlyView.
We present a strategy of integrating Ag NPs with a 2D Cu3(HHTP)2 framework to boost selective CO2 electroreduction. The optimal composite achieves 65.1% FECH4 ${\text{FE}}_{{\text{CH}}_{4}}$ at 240 mA cm−2. Synergistic effects enhance CO2 adsorption, facilitate electron transfer, and selectively stabilize key reaction intermediates, steering the ...
Fang‐Fang Wang   +3 more
wiley   +1 more source

Jednadžbe stanja realnih plinova [PDF]

open access: yesKemija u Industriji, 2006
The properties of classical real gases, especially their deviations from ideal behaviour, are reviewed. After a brief overview of molecular interactions, the so-called traditional ('primitive') model is presented and shown to be applicable not only to ...
Simeon, V., Butorac, V.
doaj  

Global well-posedness and scattering for the focusing nonlinear Schrödinger equation in the nonradial case [PDF]

open access: yesOpuscula Mathematica, 2012
The energy-critical, focusing nonlinear Schrödinger equation in the nonradial case reads as follows: \[i\partial_t u = -\Delta u -|u|^{\frac{4}{N-2}}u,\quad (x,0)=u_0 \in H^1 (\mathbb{R}^N),\quad N\geq 3.\] Under a suitable assumption on the maximal ...
Pigong Han
doaj   +1 more source

Methodological guidelines for the characterization of polysaccharide helical structures

open access: yesFood Biomacromolecules, EarlyView.
Abstract Polysaccharide chain conformation is a critical determinant of their physicochemical and biological properties; however, reliable identification remains a significant challenge due to the inconsistent structural evidence yielded by conventional analytical techniques.
Yixuan Wu   +5 more
wiley   +1 more source

The application of the multisolute osmotic virial equation to cryobiology

open access: yes, 2010
Mathematical modelling of cellular osmotic responses to low temperatures is being increasingly used to overcome obstacles in the successful cryopreservation of cells and tissues.
Prickett, Richelle Catherine
core   +1 more source

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