منابع مشابه
Continuum Thermo-Mechanics Fundamentals
We assume that at the continuum scales of interest here, the mass density ⇢ as well as the the momentum per unit volume ⇢u can be interpreted as well-defined averages of microscopic masses and momenta. That is, they are averages over minute spatial regions and time intervals, which can nevertheless be chosen large enough that there are negligible statistical fluctuations about those averages at...
متن کاملMaximal thermo-geometric parameter
A nonlinear heat conduction equation is studied, and the maximal thermo-geometric parameter in the equation is analytically determined, above which thermal instability occurs. The first-order result yields an acceptable error, and the variational iteration method is recommended for a higher accurate prediction. 2010 Mathematics Subject Classification: 35K05, 35Q79, 80A20, 34B15
متن کاملThermo - Gravitational Equilibrium
Acknowledging that what is currently defined as ‘pressure’ should not have reason to exist without the existence of a gravity field, the connection between thermodynamics and gravity can be easily made clear. Comprehensive thermo-gravitational equilibrium conditions may be defined without raising any doubt about the validity of the conventional thermodynamic and gravitational equilibrium condit...
متن کاملSupersymmetry in Thermo Field Dynamics
By considering the enlarged thermal system including the heat bath, it is shown that this system has supersymmetry which is not broken at finite temperature. The superalgebra is constructed and the Hamiltonian is expressed as the anti-commutator of two kinds of super charges. With this Hamiltonian and the thermal vaccum | 0(β) >, this supersymmetry is found to be preserved.
متن کاملAero-Thermo-Dynamic Mass Analysis
Each gas molecule has its own molecular weight, while such a microscopic characteristic is generally inaccessible, and thus, it is measured indirectly through e.g. ionization in conventional mass analysis. Here, we present a novel approach to the direct measurement of molecular weight through a nanoarchitectonic combination of aerodynamics, thermodynamics, and mechanics, transducing microscopic...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: The Lancet
سال: 1884
ISSN: 0140-6736
DOI: 10.1016/s0140-6736(02)12885-6