نتایج جستجو برای: earth is naturally a great thermal source
تعداد نتایج: 14269336 فیلتر نتایج به سال:
Iran has a great wealth of various naturally occurring medicinal plants which have great potential pharmacological activities. Otostegia persica (Burm.f.) Boiss. is one of these plants which is a perennial shrub found in South and Southeast of Iran. The aerial parts of O. persica have been used in Iranian traditional medicine to treat various types of diseases (e.g., inflammatoryand pain-mediat...
The internal thermal and magnetic evolution of rocky exoplanets is critical to their habitability. We focus on the thermal-orbital evolution of Earth-mass planets around low-mass M stars whose radiative habitable zone overlaps with the "tidal zone," where tidal dissipation is expected to be a significant heat source in the interior. We develop a thermal-orbital evolution model calibrated to Ear...
We introduce a new blind source separation approach, based on modified Kullback– Leibler divergence between copula densities, for both independent and dependent source component signals. In the classical case of independent source components, the proposed method generalizes the mutual information (between probability densities) procedure. Moreover, it has the great advantage to be naturally ext...
for a given riemannian manifold (m,g),it is an interesting question to study the existence of a conformal diffemorphism (also called as a conformal transformation) f : m ! m such that the metric g? = fg has one of the following properties: (i)(m; g?) has constant scalar curvature. (ii)(m; g?) is an einstein manifold.
Adiabatic compression is a key factor that exerts control over thermal convection in the compressible solid mantle of super-Earths. To discuss the effects of adiabatic compression, we present a numerical model of transient convection in the cooling mantle of a super-Earth that is ten times larger in size than the Earth. The calculations started with the shallow mantle that was hotter than expec...
geothermal energy because of its versatility has extensive applications in power generation, industry, agriculture, treatment of diseases etc: ...this source of energy has received great attention in recent years many countries in the world are benefiting from it. it possesses an eternal heat source and is pollution free. in this article it is tried to demonstrate the importance of georhermal e...
Designing nanostructured materials with high dosimetric efficiency is a great challenge in radiation dosimetry research. From rare-earth series, yttrium oxide is considered as excellent host matrix for rare-earth ions, leading to formation of advanced functional materials with optical, mechanical, chemical, and thermal properties notably improved. Nevertheless, there is a lack of information wh...
The oxidant forms the most part of the propellants, and ammonium perchlorate is the most applicable oxidizer in composite solid propellants. Therefore, its thermal decomposition and immunity properties have been a great effect on the propellants properties. The using of polymeric additives is one of the different methods for improving the thermal and immunological properties of ammonium perchlo...
a phase-locked loop (pll) based frequency synthesizer is an important circuit that is used in many applications, especially in communication systems such as ethernet receivers, disk drive read/write channels, digital mobile receivers, high-speed memory interfaces, system clock recovery and wireless communication system. other than requiring good signal purity such as low phase noise and low spu...
in new management approaches, in the organizations with inflexible structure, existing of red tapes and interruptions caused by limitations and also non-compliance with environmental changes, create demotivation among staff. with regard to the influence of job motivational potential and its relationship to the type of organizational structure( enabling and dissuasive), the goal of this research...
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