Applications of electrospinning and supercritical carbon dioxide foaming techniques in controlled release and bone regeneration 5
Applications of electrospinning and supercritical carbon dioxide foaming techniques in controlled release and bone regeneration 1
... silk fibroin fiber scaffolds containing bone morphogenetic protein (BMP-2) and/ or nanoparticles of hydroxyapatite (nHAp) using electrospinning, and showed its ability in inducing in vitro bone formation ... the applications of electrospinning and supercritical CO2 foaming techniques With the aid of physical and chemical modifications on mechanical properties...
Ngày tải lên: 14/09/2015, 08:41
Applications of electrospinning and supercritical carbon dioxide foaming techniques in controlled release and bone regeneration 2
... 1660-1680 Turn 26 2 38±18 30 2 29±1 26 2 1681-16 92 β- Antiparallel 26 ±3 24 ±4 25 2 24±1 26 2 α-helix percentage is the most important criterion in judging the denaturation of protein In Figure 3.9, ... conformations BMP -2 from from from F1 components native F2 F3 F4 (cm-1) 1647-1660 α-Helix 12 1 9 2 11 2 11 2 12 1 1615-1636 β- sheet 26 ±4 19±7 24 ±6 26 2 25 2 163...
Ngày tải lên: 14/09/2015, 08:41
Applications of electrospinning and supercritical carbon dioxide foaming techniques in controlled release and bone regeneration 3
... 4 .3 Comparison of performance scores for all samples at specific intervals* Control F1 F2 F3 F4 Week 0.00 0.00 0 .33 0.67 1 .33 Week 1.67 2.00 1.00 2.00 2.00 Week 2.67 3. 33 2.67 3. 33 3 .33 Week 3. 67 ... with increasing HAp content From 408ppm in scaffold F1, the DCM content dropped to 34 035 0ppm in scaffolds F2 and F4, and dropped even further to almost 33 2ppm in sca...
Ngày tải lên: 14/09/2015, 08:41
Applications of electrospinning and supercritical carbon dioxide foaming techniques in controlled release and bone regeneration 4
... DNA release from different scaffolds in PBS at 37 ºC Irrespective of the release modes, the release rate of plasmid DNA increases with increasing loading of HAp nanoparticles, but the whole release ... their release properties and morphology We further explored the in vitro study of plasmid DNA by investigating the effects of HAp content and the different methods...
Ngày tải lên: 14/09/2015, 08:41
Applications of electrospinning and supercritical carbon dioxide foaming techniques in controlled release and bone regeneration 5
... three kinds of scaffolds was well maintained, which helped improve the formation of new bone and the healing of segmental defects in vivo Groups A, B and C released DNA or DNA nanoparticles in different ... solution (0.02% in mM sodium acetate buffer, pH 5. 0) and DNA solution of 100µg/mL in 5- 50 mM of sodium sulfate solution were preheated to 50 -55 °C separatel...
Ngày tải lên: 14/09/2015, 08:41
Applications of electrospinning and supercritical carbon dioxide foaming techniques in controlled release and bone regeneration 6
... fabricated by the combination of spray drying and supercritical CO2 foaming techniques and the effects of chitosan incorporation on the following factors was investigated: in vitro release of DNA, cell ... cases of scaffolds F1 and F2 To evaluate the effects of the fabrication process (including spray drying, supercritical CO2 foaming, and handling of samples)...
Ngày tải lên: 14/09/2015, 08:41
Applications of electrospinning and supercritical carbon dioxide foaming techniques in controlled release and bone regeneration 7
... promising results in controlled release of DNA, but the release rate of DNA and subsequent expression of target protein is too low, especially in the initial stage (Figures 7. 5a and 7. 7b) Therefore, ... by a period of slow release profile Compared with the release profile of F0, the release profiles of F1 and F2 are relatively linear and sustainable The...
Ngày tải lên: 14/09/2015, 08:41
Applications of electrospinning and supercritical carbon dioxide foaming techniques in controlled release and bone regeneration 8
... potential applications of electrospinning and supercritical CO2 foaming techniques in the fabrication of three dimensional scaffolds for controlled release and bone regeneration These two techniques ... sustained release of DNA, possibly due to a balance of electrostatic interaction and hydrophilic interaction between DNA and the surface of Lysine pep...
Ngày tải lên: 14/09/2015, 08:41
extraction of liquid crystals from flat panel display devices using both liquid and supercritical carbon dioxide
... Demonstration of the disassembly of a defunct LCD Carbon dioxide extraction was carried out using a Thar Technologies SFE-500F-2-FMC System and liquid withdrawal carbon dioxide (99.9 %) The extraction ... for extraction of liquid crystals from defunct display devices with high efficiency MATERIALS AND METHODS A LCD (Figure 2A) device may be disassembled b...
Ngày tải lên: 28/04/2014, 10:50
Optimization of microwave, ultra sonic and supercritical carbon dioxide assisted extraction techniques for curcumin from curcuma longa
... ) % extraction of curcumin using acetone Fig Curcumin extraction by supercritical CO2 ( ) % Extraction of curcumin from curcuma powder using supercritical CO2 3.3 Ultra- sonic assisted extraction ... extraction (UAE) 3.4 Supercritical carbon dioxide extraction (SC CO2 E) 3.3.1 Effect of ultra- sonic irradiation Fig shows the effect of ultra- s...
Ngày tải lên: 01/07/2014, 13:23
identification, design and synthesis of oxygenated hydrocarbon-based carbon dioxide-soluble polymers for chemical and petroleum engineering applications
... ABSTRACT IDENTIFICATION, DESIGN AND SYNTHESIS OF OXYGENATED HYDROCARBON-BASED CO2-SOLUBLE POLYMERS FOR CHEMICAL AND PETROLEUM ENGINEERING APPLICATIONS Lei Hong, Ph.D University of Pittsburgh, 2006 ... defended on March 29, 2006 and approved by Dr Eric J Beckman, Professor, Chemical and Petroleum Engineering Department Dr J Karl Johnson, Professor, Chem...
Ngày tải lên: 13/11/2014, 10:49
Thermodynamics of cholesterol compounds in supercritical carbon dioxide experimental and modeling studies
... THERMODYNAMICS OF CHOLESTEROL COMPOUNDS IN SUPERCRITICAL CARBON DIOXIDE: EXPERIMENTAL AND MODELING STUDIES HUANG ZHEN (M ENG., TIANJIN UNIVERISTY) A THESIS SUBMITTED FOR THE DEGREE OF DOCTOR ... Largescale supercritical CO2 extraction has been in commercial operation since the late 1970s for decaffeination of coffee and tea, refining of cooking oils, recover...
Ngày tải lên: 17/09/2015, 17:19
Báo cáo lâm nghiệp: "Soil carbon dioxide efflux in pure and mixed stands of oak and beech" potx
... Three sampling areas were located in each of the quasi -pure stands dominated either by oak or beech and four were located in a mixture of both species The ne roots of the forest oor and of the Ah ... the mixed and oak stands which showed similar annual FFRs (Tab V) FFR accounted respectively for 28, 30 and 46% of TSR in the oak, mixed and beech stands...
Ngày tải lên: 07/08/2014, 16:20
Báo cáo khoa học: " The effects of ectomycorrhizal status on carbon dioxide assimilation capacity, water-use efficiency and response to transplanting in seedlings of Pseudotsuga menziesii (Mirb) Franco" docx
... demand function (D) which defines the mesophyll photosynthetic capacity and, ii), the photosynthetic CO supply function (Su) defining the diffusional limitation to CO as2 similation For determining ... strain used as mycobiont and ii), that there may be a discrepancy between effects of mycorrhizae on stem elongation on the one hand and on diameter and weight growth...
Ngày tải lên: 09/08/2014, 03:25
extraction of essential oil from lemongrass using supercritical carbon dioxide
... Properties of Lemongrass Oil 32 Table 5: Physicochemical Properties of main components of essential oil 34 Table 6: Investigation of SC CO2 extraction of essential oil from lemongrass ... result of Lemongrass essential oil from steam distillation, stem 106 Figure 38: GC result of Lemongrass essential oil from steam distillation, leaf 106 Figure...
Ngày tải lên: 13/11/2014, 06:25