Optimization of microwave, ultra sonic and supercritical carbon dioxide assisted extraction techniques for curcumin from curcuma longa

... benign solvents for extraction of liquid crystals from display devices. Typically the recovery with liquid carbon dioxide was in excess of 96% after 15 minutes. Extractions with carbon dioxide demonstrate ... 9 tonnes of liquid crystal per year with a potential value of tens of millions of dollars.[2] Herein we demonstrate that both liquid and supercritical c...

Ngày tải lên: 28/04/2014, 10:50

... Li 1 and Hui Lv 1 Abstract In this article, we consider the problem of joint optimization of multi-input multi-output (MIMO) radar waveform and biased estimator with prior information on targets of ... 2011:15 http://asp.eurasipjournals.com/content/2011/1/15 Page 10 of 13 RESEARCH Open Access Joint optimization of MIMO radar waveform and biased estimator with prior informa...

Ngày tải lên: 21/06/2014, 02:20

... were baked at 80°C for 10 h, coated for 10 min and removed by annealing. Most of the nanotubes are straight and have uniform dimensions along their entire lengths. The average outer diameter of the nanotubes ... nanofibers were baked from 80 to 150°C for 8–10 h and coated for 6–15 min, but it still kept suspended and tight with a length of 4 mm, indicating that PVP has...

Ngày tải lên: 22/06/2014, 00:20

... mass of coal burnt. This is given by: fccfCO mCQ ,, 2 η ××= (21) where C is the carbon fraction of the fuel (coal) and it can be obtained from the molecular formula of coal C135H96O9NS and ... O. and Prasad B. N., “Thermodynamic Modeling and Simulation of Advanced Combined Cycle for Performance Enhancement”, Proceedings of the Institution of Mechanical Engin...

Ngày tải lên: 05/09/2013, 15:28

... types of diabetes mellitus. High levels of free radicals and the decline of antioxidant defense mechanisms lead to damage of cellular or- ganelles and enzymes, increased lipid peroxidation, and ... reserved Research Paper Ultra- low microcurrent in the management of diabetes mellitus, hyper- tension and chronic wounds: Report of twelve cases and discussion of mech...

Ngày tải lên: 26/10/2012, 09:39

... analyzing and optimizing performance of various thermodynamic cycles and devices. In recent years, some authors have performed the performance analysis and optimization for various cogeneration ... efficiency) and second law (exergetic efficiency) of thermodynamics and investigated the effects of overall pressure ratio, cycle temperature ratio and pressure losses on th...

Ngày tải lên: 05/09/2013, 14:58

... utility of the CFD numerical simulations as a tool for design and optimization of hydropower performance and flow behavior through hydromechanical devices or hydraulic structures of intake and ... are composed of a set of pipes, valves and other hydromechanical equipments necessary for adequate operational management, control and safety. International Journal of...

Ngày tải lên: 05/09/2013, 14:58

... It can be seen from Figure 2 that with the increase of 1 π , () opt h u Π and () opt k u Π decrease first and then increase, () opt l u Π International Journal of Energy and Environment ... Characteristic of ,, , , () opt j jhlki u = Π and () opt ex η Π versus 1 π 2.2 Maximum dimensionless profit rate and corresponding exergetic efficiency Figures 3 and...

Ngày tải lên: 05/09/2013, 14:58

... a powerful tool for analyzing and optimizing performance of various thermodynamic cycles and devices. Some authors have performed the performance analysis and optimization for various CHP plants ... [40] and refrigerator [41]. On the basis of Refs. [32-41], Tao et al [42, 43] performed the finite time exergoeconomic performance analysis and optimization for endorever...

Ngày tải lên: 05/09/2013, 14:59

... as 3634.2, 3736.4, and 4185.5 kJ/kg CO 2 for the 85, 90, and 95% CO 2 removal process for coal fired power plant and 3781, 4050, and 4240 kJ/kg CO 2 for 85%, 90%, and 95% for gas fired power ... Mohammad A. Carbon dioxide capture from flue gas. Ph.D Thesis, University of Delft, Netherland, 2009. [9] Bravo J.L., Rocha J.A. and Fair J.R Mass Transfer in Gauze P...

Ngày tải lên: 05/09/2013, 14:59