homogeneous catalysis in supercritical carbon dioxide

... concentration of 1-butanol in the supercritical carbon dioxide during our experiment The solubility of 1-butanol in supercritical carbon dioxide (yBu–OH= 0.0135) was obtained using CHEMSHARE DESIGN ... models describing wet gel drying with supercritical carbon dioxide are rare and oversimplified.14–16 In this paper, mathematical modeling of wet gel drying with supercritical car-bon dioxide is ... Mathematical models of alumina/silica gel supercritical drying with carbon dioxide were studied using supercritical drying experimental data An alumina/silica gel with zinc chloride was synthesized...

Ngày tải lên: 04/12/2022, 15:12

... COMPOUNDS IN SUPERCRITICAL CARBON DIOXIDE: EXPERIMENTAL AND MODELING STUDIES HUANG ZHEN NATIONAL UNIVERSITY OF SINGAPORE 2003 Trang 2IN SUPERCRITICAL CARBON DIOXIDE: EXPERIMENTAL AND MODELING ... showing the supercritical region of CO2 10 Figure 2.2 Variation in density of CO2 in the vicinity of its critical point 12 Figure 2.3 Diffusivity behavior of carbon dioxide in the vicinity ... acetate, butyrate and benzoate in supercritical CO2 Experimentally determined solubility isotherms in pure supercritical carbon dioxide were obtained over a range of operating conditions from 90 to...

Ngày tải lên: 17/09/2015, 17:19

... http://en.wikipedia.org/wiki/Tissue_engineering Trang 41993), is "an interdisciplinary field that applies the principles of engineering and life sciences toward the development of biological substitutes that restore, maintain, ... (drug in a broad sense including chemical drugs, protein, DNA, et al.) polymeric pellets and microspheres introduced a new concept in drug delivery: Drugs can be delivered to tissues in a sustained, ... Vacanti, 1993) Tissue engineering has also been defined as "understanding the principles of tissue growth, and applying this to produce functional replacement tissue for clinical use" (MacArthur,...

Ngày tải lên: 14/09/2015, 08:41

... provide sufficient bone tissue to the injury site (Huang et al., 2005) Other implications of grafting including severe pain, persistent aching, scarring and infection have also been reported (Swan ... is to conduct an in vitro study of recombinant BMP-2 encapsulated in fibrous scaffolds by investigating the effects of HAp content and the different methods of protein loading on the biological ... 10 mL glass syringe MATE interchangeable 10cc hypodermic syringe, Popper & Sons, Inc., New Hyde Park, (MICRO-NY US) fitted with a 29-g needle and set up in the elecontrospinning apparatus...

Ngày tải lên: 14/09/2015, 08:41

... both in vitro and in vivo (Jingushi et al., 1995; Nixon et al., 1998; Pfeilschifter et al., 1993; Scherping et al., 1997; Thaller et al., 1993) In particular, BMPs are osteoinductive proteins ... Before performing further characterizations in vivo, gas chromatography was used in the present study to determine the residual amount of Trang 5Dichloromethane (DCM) remaining in the scaffolds ... scaffolds obtained from the electrospinning method, 15mg of each sample of F1-F4 were weighed and dissolved in 5 mL of DMF solution to extract DCM after freeze drying for 3 days inside a Martin Christ...

Ngày tải lên: 14/09/2015, 08:41

... syringe, Popper & Sons, Inc., New Hyde Park, NY US) fitted with a 29-g needle and set up in the elecontrospinning apparatus The flow rate of polymer solution from the syringe into the spinneret ... amounts of protein because of its short half-life Gene transfection is a powerful and promising alternative that involves the in vitro or in vivo incorporation of exogenous genes into cells for ... the corresponding strain Differential scanning calorimetry (DSC) Differential scanning calorimetry (DSC) can be employed to determine the amount of crystalline structure within the microfibers...

Ngày tải lên: 14/09/2015, 08:41

... electrospinning method and DNA was incorporated into the scaffolds in three ways (i.e coating of naked DNA or DNA/chitosan nanoparticles on scaffolds after fiber fabrication by dripping, and ... the lowest Interestingly, the concentration increased significantly in the subsequent two weeks, suggesting that the expression of DNA from group C samples was sustainable and lasting Nonetheless, ... in the Trang 11fourth week, although the level was still comparable to other samples In contrast, C1 showed a steep increase before reaching a peak in the fourth week ALP activity is a good indicator...

Ngày tải lên: 14/09/2015, 08:41

... fabrication process (including spray drying, supercritical agarose DNA gel electrophoresis was utilized to determine the integrity of plasmid DNA released out from foams in vitro after 3 days ... 3-dimensional structural guide in the formation and regeneration of tissue (Goldstein et al., 2001).Therefore, combining the concept of gene delivery and tissue engineering, porous foam has an obvious ... encapsulation shell in most cases In contrast, in the present work, its polycationic property will be used as an additive for controlling DNA release and adhering cells On the other hand, supercritical...

Ngày tải lên: 14/09/2015, 08:41

... N-methylmorpholine The removal of Fmoc was completed using 20% piperidine in dimethylformamide (DMF) Cycles of deprotection, washings, double couplings, and washings were repeated until the desired chain ... fetal bovine serum (Gibco), 10U/mL penicillin G sodium and 10 mg/mL streptomycin as Fungizone (Gibco) and incubated at extracted with PBS solution containing 0.25% trypsin-EDTA (Biological Industries, ... peptides Blank PLGA foams were engineered based on a gas foaming method using supercritical CO2 as the blowing agent All the procedures are the same as explained in Chapter 7 (see Figure 7.1) Both...

Ngày tải lên: 14/09/2015, 08:41

... USING SUPERCRITICAL CARBON DIOXIDE In Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy in Chemical Engineering Submitted by HUYNH KY PHUONG HA Chemical Engineering ... during the time I stayed and researched inJapan but also in the Philippines Thank you for kindly sharing your knowledge aswell as experience in research, Thank you for cherishing and supervising ... were also determined Trang 3De La Salle University, Host Institution of Chemical Engineering inAUN/SEED-Net program Ho Chi Minh City University of Technology Chemical Engineering Laboratory and...

Ngày tải lên: 13/11/2014, 06:25

... through a closed circuit, without bringing them in direct contact and also without involving any rotating machinery The density difference between the fluids flowing through two vertical sections ... D) sink centers of sCO2-based loop for 8.5 MPa pressure with 298 K sink temperature and 320 W input power sCO2, supercritical carbon dioxide Trang 6forces, and the loop flow rate continually increases ... of CO2 and water as working media under low-to-intermediate power levels Operating conditions were selected so as to maintain CO2in a supercritical state and water as a single-phase liquid Effects...

Ngày tải lên: 10/02/2020, 00:09

... USING SUPERCRITICAL CARBON DIOXIDE In Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy in Chemical Engineering Submitted by HUYNH KY PHUONG HA Chemical Engineering ... during the time I stayed and researched inJapan but also in the Philippines Thank you for kindly sharing your knowledge aswell as experience in research, Thank you for cherishing and supervising ... were also determined Trang 3De La Salle University, Host Institution of Chemical Engineering inAUN/SEED-Net program Ho Chi Minh City University of Technology Chemical Engineering Laboratory and...

Ngày tải lên: 17/06/2021, 16:22

... strong in the gas-like region, increasing significantly with increasing density; plateaulike in the near-critical density region, beginning at ρr ∼ 0.5 and extending to ρr ∼ 1.5; and again increasing ... solute–solvent interactions in supercritical fluids, the Py values were found to increase with increasing density in a nonlinear manner (2,3,40–43) For example, Sun et al reported Py values in supercritical ... Hutchenson Homogeneous Catalysis in Supercritical Carbon Dioxide Can Erkey Supercritical Fluid Processing of Polymeric Materials Mark A McHugh, J Don Wang, and Frederick S Mandel Surfactants in Supercritical...

Ngày tải lên: 02/04/2014, 15:48

... slash pine (Pinus elliotii) from pine plantations The increase in monoterpene emissions in the deep south was because of an increase in loblolly pine (P taeda), both in pine plantations and in natural ... which often appears in pine plantations in the south, and which in South Carolina and Georgia increased significantly within pine plantations (although sweetgum also increased in nonplantation forests ... defined in Methods; and the set RBiso ðjÞ contains all isopreneemitting trees within plot j, excluding as before trees greater than in (12.7 cm) in diameter that were not measured in the first inventory...

Ngày tải lên: 14/02/2014, 08:20

... used in countrywide, including agriculture sector did not applied this technique for their agricultural development and land use planning • A meanwhile, in that times agriculture lands in Laos ... farming system • The problems above due to lack of an appropriate tool in terms of integrated spatial data on land use/land covers However, recently GIS and remote sensing has been using in several ... types of works in both government and private agencies As we know, GIS and remote sensing have an important role in linkage and analysis of such data, in particular for detection, interpretation,...

Ngày tải lên: 17/03/2014, 11:20

... expressed in spring varieties: it remained low and unchanging in both tissues, however Thus, TaAGL42 might not be involved in phase transition at all A clue that instead it might be involved in cold ... occur during the winter in a northern climate – a gradual decline in temperature, day-length and light intensity In most previous studies, unnaturally high light intensities have been maintained ... to promote flowering However, the complete lack of response in the spring variety, Paragon, is intriguing: does the gibberellin pathway not function to promote flowering in spring varieties of...

Ngày tải lên: 12/08/2014, 03:20

... changes including increased superoxide generation from leukocytes, increased total nitrites and nitrates, increased protein carbonyls, increased nitric oxide in exhaled breath condensate, increased ... constant flow rate of 1.0 ml/min Two microliters of sample was injected into the 270°C inlet using split mode with an injection ratio of 10 and a split flow of 10 ml/min The initial oven temperature ... exclusively in its reduced form, a conversion to GSSG, which his inducible following oxidative stress, would indicate an increase in oxidative stress in the lung BAL samples were collected at 10 minutes,...

Ngày tải lên: 12/08/2014, 11:22

... Gelsolin/villin superfamily severs actin filaments Twinfilin inhibits actin nucleotide exchange Actin/Bundling/Crosslinking Proteins α-actinin connects and organizes actin filaments EPLIN stabilizes ... A1 A2 A3 adseverin domains through A4 A5 A6 scinlA scinderin-like A scinlB scinderin-like B SB1-SB3 scinlB N-terminal half SB4-SB6 scinlB C-terminal half SB1 SB2 SB3 scinlB domains through SB4 ... Roles of actin binding proteins in actin dynamics (A) Actin monomer binding proteins Thymosin-β4 blocks all assembly reactions; profilin promotes nucleotide exchange and inhibits pointed-end elongation...

Ngày tải lên: 11/09/2015, 10:17

... several sorting mechanisms may induce heterogeneity in the population of ILVs in single MVBs by acting separately on different domains of the limiting membrane C: Receiving lipids and proteins from ... several sorting mechanisms may induce heterogeneity in the population of ILVs in single MVBs by acting separately on different domains of the limiting membrane C: Receiving lipids and proteins from ... multiple follicle in single ovulation species including humans and bovine In bovine, in order to expand the number of offspring during the lifetime of an individual, female animals with high genetic...

Ngày tải lên: 25/11/2015, 14:53

... mPTP-opening induced by rBAX To gain insight into the existence of putative mitochondrial lipid microdomains in vivo, we evaluated the inducing effect of rBAX on opening of the mPTP in kidney ... blot Protein loading was determined by using anti-ANT polyclonal IgG (C) Cytochrome c content in mitochondria (M) and in supernatants (SS) recovered after rBAX incubation Proteins in the supernatants ... Modifications in the cholesterol content in vivo may lead to alterations in the physical environment of the membrane, consequently changing the likelihood of certain proteins partitioning into these domains...

Ngày tải lên: 07/03/2014, 05:20