monoxide carbon dioxide and hydrogen

... for a supercritical CO2loop Fig 4e Velocity and temperature contours (A and C) Velocity and (B and D) temperature contours at (A and B) source and (C and D) sink centers of sCO2-based loop for ... buoyancy and friction Therefore, an ac-curate estimation of thermodynamic and transport properties plays a vital role in any NCL simulation National Institute of Standards and Technology (NIST) standard ... Comparison of Thermalhydraulic Aspects of Supercritical Carbon Dioxide and Subcritical Water-Based Natural Circulation Loop Milan Krishna Singha Sarkar and Dipankar Narayan Basu* Department of Mechanical

Ngày tải lên: 10/02/2020, 00:09

... Cyanate and thiocyanate do not interfere with the CN − quantitation This technique is easy to perform and is specific It requires a minimum of handling of the samples and a small sample size, and ... constant values for R A and R B are calculated using Equations (5) and (6), respectively, from the values obtained for the negative and positive COHb controls from the CO-Oximeter and spectrophotometer ... and R B constants, once calculated, to determine the percentage mass fraction of COHb, w COHb , in a sample from Equation (4) From the procedures in 8.5.6 and Equations (5) and (6), the R A and

Ngày tải lên: 09/03/2024, 15:34

... absorption of CO2 in amine solution (Mandal and Bandyopadhyay, 2005; Mandal and Bandyopadhyay, 2006) Blends of primary and tertiary amines or secondary and tertiary amines have shown the combination ... liquid membrane (ILM) Ward and Robb immobilized an aqueous bicarbonate-carbonate solution into a porous support and reported a CO2/O2 separation factor of 1,500 (Ward and Robb, 1967) Meldon et ... follows Fick’s law and the downstream pressure is much less than the upstream pressure, the permeability is given by (Zolandz and Fleming, 1992): (2.2) i i P = × where D i and S i are the average

Ngày tải lên: 02/10/2024, 01:50

... tracing of helmet and airway (lung) flow and pressure during HF-BiPAP, BIVENT, and PSV Original tracing of helmet and airway (lung) flow and pressure during HF-BiPAP, BIVENT, and PSV Compliance ... of 5 and 15 cmH2O, respiratory rates of 15 and 30 breaths/min, inspiratory efforts (respiratory drive) of 2.5 and 10 cmH2O) and different lung characteristics Additionally, CO2 removal and noise ... device is easy to handle and provides two different pressure levels Overall, it might improve patient comfort and maximize CO2 washout This study compared HF-BiPAP with PSV and biphasic posi-tive

Ngày tải lên: 13/08/2014, 16:21

... MMA were made by Hsiao and coworkers.31Other than MMA and PFOA system, other systems, such as MMA and poly(dimethylsiloxane) (PDMS),32 vinyl acetate and PDMS,33 and styrene and poly(styrene-b-FOA),34 ... and S1, S2, and S3 in CO2 at 298 K and 10 wt% 125 Table 6.3* Viscosity of neat CO2 and galactose pentaacetate solutions at 313 K and 17.24 MPa (2500 psi) 127 Table 8.1 Thickening candidates with ... supercritical carbon dioxide using as a medium for polymer synthesis and for polymer processing has attracted great attention recently There are a number of factors that make carbon dioxide a desirable

Ngày tải lên: 13/11/2014, 10:49

... investigated, D tertiolecta was selected as a candidate for carbon dioxide sequestration and its potential for carbon dioxide capture was evaluated through carbon partitioning studies of glycerol synthesis ... 2011) However, abiotic carbon dioxide mitigation methods pose significant challenges such as leakage and large space requirements 1.2 Carbon dioxide capture by bacteria Carbon dioxide capture by ... for carbon dioxide sequestration (Stewart and Hessami, 2005, Kumar et al., 2010) Oxygenic photosynthesis is a natural process which converts sunlight, water and carbon dioxide to oxygen and organic

Ngày tải lên: 09/09/2015, 11:30

... Trang 61.3 Carbon Dioxide as Building Blocks for Synthetically Useful Intermediates 18 1.4 Carbon Dioxide as a Tool for Organic Transformations 22 Chapter 2 – Conversion of Carbon Dioxide to ... the fixation and utilization of CO2 as a feedstock, to yield fuels and synthetically useful intermediates In the first part of this thesis, the fixation and utilization of carbon dioxide as a ... fixation and utilization of carbon dioxide has been the focus of intense research, so as to the mitigate the levels of the greenhouse gas released to the atmosphere While carbon capture and storage

Ngày tải lên: 09/09/2015, 17:57

... (Conwell and Huang, 2005; Schreier, 1994; Trang 3Tomlinson and Rolland, 1996) There have been two major approaches proposed: the viral mediated and non-viral mediated gene transfection (Ledley and ... cells and immune system cells (e.g., lymphocytes and tissue cells from spleen, thymus, and lymph nodes) For the circulatory system and bone marrow in which cells can occur in a liquid suspension and ... products based on lactic and glycolic acid-and on other materials, including poly(dioxanone), poly(trimethylene carbonate) copolymers, and poly(caprolactone) homo-polymers and copolymers have been

Ngày tải lên: 14/09/2015, 08:41

... calculated and used to determine the secondary structure of the protein using procedures reported by Nahar and Riahi (Nahar and Riahi, 1996) Trang 11Tajmir-3.3.5 Cell culture, cell attachment and cytotoxicity ... microscope and compared after day 1, 2, 3, 4, 5, 6, 7 and 8, respectively Trang 123.3.6 Statistical analysis All the data were statistically analyzed to express the mean ± standard deviation (S.D.) and ... molecular integrity and biological activity of BMP-2, in vitro release sample was centrifuged and the supernatant was analyzed by Native-PAGE to determine the integrity and conformation of BMP-2

Ngày tải lên: 14/09/2015, 08:41

... segmental bone defects Aebli and colleagues (Aebli et al., 2005) and Saito and colleagues (Saito et al., 2005) reported that BMPs improve bone regeneration in vivo, and BMP-2 has been found to ... growth factor, fibroblast growth factor and insulin growth factor have been shown to stimulate bone growth, collagen synthesis, and fracture repair both in vitro and in vivo (Jingushi et al., 1995; ... in the HAp or/and BMP-2 loaded scaffolds, standard solutions with range of DCM concentrations in N, N Dimethyl Formamide (DMF) from 0.5 to 10 x 10-6 mL DCM per mL DMF were prepared and placed in

Ngày tải lên: 14/09/2015, 08:41

... US) and purchased from Lakeshore Biomaterials (Birmingham, England) Chitosan (medium molecular weight and 75-85% deacetylated), chitosanase from Streptomyces griseus (lyophilized powder) and ... analyzed to express the mean ± the standard deviation (S.D.) of the mean and p<0.05 was accepted to be significant 5.4 Results and discussion 5.4.1 pT7T3D-Pac purity and concentration In order to ... of scaffold is needed because nanoparticles and microparticles are not suitable in view of their fluidity, and hence can’t be localized themselves and give new born bone enough support Electrospun

Ngày tải lên: 14/09/2015, 08:41

... from the sonication of organic and aqueous mixture Table 6.1 Trang 4summarizes the composition of the emulsion of the 3 groups (A, B and C) and 9 samples (A1-A3, B1-B3 and C1-C3) The detailed fabrication ... properties of groups A, B and C, and are consistent with the in vitro release profiles of BMP-2 plasmid from different scaffolds (Nie and Wang, 2007), As naked Trang 9DNA and DNA/chitosan nanoparticles ... deviation (S.D.) Student’s t-test was performed and p<0.05 was accepted to be significant Trang 56.3 Results and discussion 6.3.1 Preparation and characterization of the DNA/chitosan nanoparticles

Ngày tải lên: 14/09/2015, 08:41

... (Onishi and Machida, 1999) extracted from crustaceans and has been shown to be non-toxic in animals (Rao and Sharma, 1997) and humans (Aspden et al., 1997) Due to its good biocompatibility and cytotoxicity ... release and adhering cells On the other hand, supercritical CO2 technique is a versatile foaming tool to produce micro-porous structures with particular pore sizes and shapes Here, the morphology and ... like pressure, temperature and gas release rate (Mikos and Temenoff, 2000; Kim et al., 2006) In this study, the surface physical and chemical properties of pure PLGA and PLGA/chitosan porous foams

Ngày tải lên: 14/09/2015, 08:41

... The stable and uniform porous structures, tunable pore size and well-defined surface properties of these materials allows the incorporation and release of a diversity of proteins and DNAs in ... engineered by supercritical carbon dioxide foaming technique with large, controlled pore size and highly ordered morphology offer an intriguing channel structure for DNA delivery and cell adhesion (Mikos ... rate of DNA and subsequent expression of target protein is too low, especially in the initial stage (Figures 7.5a and 7.7b) Therefore, an initial and significant release of DNA is demanded in order

Ngày tải lên: 14/09/2015, 08:41

... IN SUPERCRITICAL CARBON DIOXIDE: EXPERIMENTAL AND MODELING STUDIES HUANG ZHEN NATIONAL UNIVERSITY OF SINGAPORE 2003 Trang 2IN SUPERCRITICAL CARBON DIOXIDE: EXPERIMENTAL AND MODELING STUDIES ... solute/cosolvent/carbon dioxide systems (an organic solid, i.e cholesterol or a cholesteryl ester, SCF CO2 and a cosolvent such as methanol or acetone), and solute 1/solute 2/carbon dioxide systems ... Diffusivity behavior of carbon dioxide in the vicinity of critical point (McHugh and Krukonis, 1994) The viscosity behavior of carbon dioxide dependent on the pressure and temperature is given

Ngày tải lên: 17/09/2015, 17:19

... vapor, carbon dioxide (CO2), methane (CH4), nitrous oxide (N2O), hydro fluorocarbons (HFCs), chlorofluorocarbons (CFCs), per fluorocarbons (PFCs) or sulfur hexafluoride (SF6), but carbon dioxide ... namely corruption – carbon dioxide – emission, corruption – income per capita and income per capita – carbon dioxide emission 34 Trang 8LIST OF TABLES Table 3.1: Name of sub-regions and countries ... measured by carbon dioxide (CO2) emissions Carbon dioxide is emitted into the atmosphere from human activities such as burning fossil fuels (natural gas, coal and oil), solid waste, forest, and also

Ngày tải lên: 29/11/2018, 23:55

... exercise and rest at two draught levels and at 75% berseem on DMB as feed Fig.3.5 Carbon dioxide emission at 10% draught level and different feed proportions at exercise and rest period Fig.3.6 Carbon ... 0th,1st, 2rd and 3rd 4th, 5th and 6th CO2 production T 2 75 25 2.5 kg 10 12 0th,1st,2rd and 3rd 4th, 5th and 6th CO2 production T 3 50 50 2.5 kg 10 12 0th, 1st, 2rd and 3rd 4th, 5th and 6th CO2 ... https://doi.org/10.20546/ijcmas.2019.804.054Effect of Feed and Draught on Carbon Dioxide Emission from the Rumen of He-Buffalo Akanksha*, Jayant Singh and T.P Singh Department of Farm Machinery and Power Engineering, College

Ngày tải lên: 13/01/2020, 06:32

... Component Analysis (PCA) and Heatmaps to understand global patterns Phytohormone extraction and analysis Lyophilized and finely ground foliar tissues were sent to the Proteomics and Mass Spectrometry ... phy-tohormone and deuterium-labelled standards [57] Con-centrations were determined from standard curves of known compounds Glucosinolate (GSL) extraction and analysis GSLs were extracted and analyzed ... GSLs (i.e 8-methylthiooctyl GSL and 8-sulphinyloctyl GSL) and indole GSLs (i.e GBC and N-methoxy-3-GBC) in-creased after methyl jasmonate treatment Bidart-Bouzat and Imeh-Nathaniel [44] stress

Ngày tải lên: 22/05/2020, 04:08

... from hydrogen and carbon oxides The conversion of carbon monoxide is referred to as CO methanation (Eq (1)), the conversion of carbon dioxide as CO2 methanation, respectively (Eq (2)) of carbon monoxide ... with hydrogen, gas and liquid carbonaceous carriers as the primary candidates.Figure 2.3 A generic energy cycle using captured or sequestered CO2 and sustainable or renewable hydrogen to yield carbon-neutral ... options, CO methanation and CO2 methanation CO methanation (Eq (1)) is an exothermic process using carbon monoxide and hydrogen as educts for the catalytic production of methane and water [49] Educt

Ngày tải lên: 25/01/2021, 23:13

... Encapsulation and Release of Carbon Dioxide from Amorphous and Crystalline Alpha-Cyclodextrin Powders and Its Application in Food Systems Minh Thao Ho M.Eng (Food Engineering and Bioprocess ... encapsulation, carbon dioxide, inclusion complex, cottage cheese, release properties Australian and New Zealand Standard Research Classifications (ANZSRC) ANZSRC code: 090801 Food Chemistry and Molecular ... COMPLEXES IN AGRICULTURE AND FOOD PRODUCTION 25 2.4 CHARACTERISTICS OF CRYSTALLINE AND AMORPHOUS SOLIDS 27 2.5 PROPERTIES OF CARBON DIOXIDE GAS AND ITS APPLICATIONS IN AGRICULTURE AND FOOD PRODUCTION

Ngày tải lên: 28/02/2021, 20:37