the stem cells can be considered as the miracle of creation, because, they are a major reservoir of the bioactive factors, molecules and cells. these reservoir cells play a major role in development and growth of the tissues and organs. regardless of the differences in differentiation capacity of embryonic and adult stem cells, both the cells are rich sources of stem cells with therapeutic appl...

Many industrial processes use hot air as a medium. This is especially relevant for drying. Nowadays, most of them consume fossil energy. study analyses an innovative facility direct solar heating up to 400 °C. For this aim, medium-scale field linear Fresnel collectors proposed heat ambient inside it. No other dedicated transfer fluid necessary. A simpler layout avoids costs, hurdles, and risks ...

The use of the organic Rankine cycle (ORC), flash (OFC) and Kalina (KC) is proposed to enhance electricity generated by a supercritical CO2 recompression Brayton (SCRB) cycle. Novel comparisons SCRB/ORC, SCRB/OFC SCRB/KC integrated plants from thermodynamic, exergoeconomic sustainability perspectives are performed choose most appropriate bottoming for waste heat recovery SCRB For comprehensiven...

Black holes are arguably the most extreme regions of universe. Yet, they also utterly inaccessible to experimentation, and even just indirect observation poses significant technical challenges. The phenomenological approach thermodynamics is uniquely suited explore at least some physical properties such scenarios, this has motivated study so-called holographic engines. We show that efficiency a...

A supercritical CO2 (S-CO2) Brayton cycle is a compact and simple power conversion system with competitive efficiency. However, the strong real gas effects of S-CO2 pose challenges to design its components. In particular, designing turbomachinery for expansion compression processes has accurately reflect effects. Windage loss one major losses that affects motor load heat generation in turbomach...

In this study, a nuclear hybrid energy system (NHES) with large-scale hydrogen storage integrated gas turbine cycle is proposed as flexible for load following. The consists of reactor, steam Rankine cycle, electrolyzer, in an underground salt cavern, and Brayton that uses fuel to generate additional electricity meet peak demand. A dynamic mathematical model developed each subsystem the NHES. To...

In recent years, there has been an increase in the use of renewable energy resources, which led to need for large-scale Energy Storage units electric grid. Currently, Compressed Air (CAES) and Pumped Hydro (PHES) are main commercially available storage technologies. However, these technologies restricted geographically can require fossil fuel streams heat air. Thus, is a develop novel that do n...