Results 81 to 90 of about 92,104 (231)
Encapsulation of water insoluble drugs in mesoporous silica nanoparticles using supercritical carbon dioxide [PDF]
, 2011 Mesoporous silica nanoparticles MCM – 41 were synthesized with two dimensional hexagonal p6mm symmetry, high specific surface area(~ 980m2/g) narrow pore size and an average particle size of 186 nm.
Chirmade, U. N. +5 more
core +1 more source
Interglacials, Milankovitch Cycles, and Carbon Dioxide [PDF]
, 2010 The existing understanding of interglacial periods is that they are initiated by Milankovitch cycles enhanced by rising atmospheric carbon dioxide concentrations. During interglacials, global temperature is also believed to be primarily controlled by carbon dioxide concentrations, modulated by internal processes such as the Pacific Decadal Oscillation ...
arxiv +1 more source
Yuanzineng kexue jishu, 2023 When the pressure vessel of supercritical carbon dioxide energy conversion system breaks, very complex ejection phenomena will occur, and its critical flow characteristics need to be studied urgently.
MING Yang;FANG Huawei;LIU Kai;YI Jingwei;LIU Jiusong;ZHAO Fulong;TIAN Ruifeng
doaj
β-Sitosterol: Supercritical Carbon Dioxide Extraction from Sea Buckthorn (Hippophae rhamnoides L.) Seeds [PDF]
, 2010 Supercritical fluid extraction represents an efficient and environmentally friendly technique for isolation of phytosterols from different plant sources.
Andras +22 more
core +3 more sources
Carbamazepine solubility in supercritical CO$_2$: a comprehensive study [PDF]
arXiv, 2020 In this paper we present our study of carbamazepine solubility in supercritical carbon dioxide. We have calculated the solubility values along two isochores corresponding to the CO$_2$ densities $\rho = 1.1\rho_{cr}(CO_2)$ and $\rho= 1.3\rho_{cr}(CO_2)$, where $\rho_{cr}(CO_2)$ is the critical density of CO$_2$, in the temperature range from $313$ to ...
arxiv
Thermophysical properties of liquid carbon dioxide under shock compressions: Quantum molecular dynamic simulations [PDF]
, 2010 Quantum molecular dynamic simulations are introduced to study the dynamical, electrical, and optical properties of carbon dioxide under dynamic compressions. The principal Hugoniot derived from the calculated equation of states is demonstrated to be well accordant with experimental results.
arxiv +1 more source
Supercritical Carbon DioxideâBased Sterilization of Decellularized Heart Valves
JACC: Basic to Translational Science, 2017 Summary: Sterilization of grafts is essential. Supercritical carbon dioxide, electrolyzed water, gamma radiation, ethanol-peracetic acid, and hydrogen peroxide techniques were compared for impact on sterility and mechanical integrity of porcine ...
Ryan S. Hennessy, MD +7 more
doaj
Авіаційно-космічна техніка та технологіяRecent decades have been characterized by growing interest in research into improving the efficiency of these cycles. The purpose of this work is a bibliometric analysis based on Scopus data (2001-2024) and an overview of the main trends associated with ...
Hanna Vorobiova
doaj +1 more source
Physics of rapidly expanding supercritical solutions: A first approach [PDF]
arXiv, 1999 We consider the case when a supercritical fluid emerges at sonic speed from a small orifice in a high pressure chamber. The subsequent expansion causes a pressure drop and the fluid then enters a regime where its equation of state in $P-V$ space becomes concave towards the origin. This is the signal for an expansion shock to occur in a non-ideal fluid.
arxiv
A new numerical algorithm for Low Mach number supercritical fluids [PDF]
arXiv, 2007 A new algorithm has been developed to compute low Mach Numbers supercritical fluid flows. The algorithm is applied using a finite volume method based on the SIMPLER algorithm. Its main advantages are to decrease significantly the CPU time, and the possibility for supercritical fluid flow modelisation to use other discretisation methods (such as ...
arxiv