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, recovering of flavors and pungencies ... 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 270 bar and...

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 and surface charge, the applications of ... developed in this thesis may be of Chapter 18 importance in combining tissue engineering and drug delivery nicely, with potential in clinical applications 1. 3 Drug delivery dosage forms In addition...

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 1637-1646 random 10±1 10±3 10±1 10 2 11±1 1660-1680 ... 3.4 .2 In vitro release results The shape of the release curve (Figure 3.6) obtained from this experiment is consistent with the in vitro release profiles of many studies of bone engineering (Jansen...

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 scaffold F3 The hydrophilicity of ... applied at 1 :30 0 dilution for 60 at 37 ºC Peroxidase activity was detected by 0.4 mg/L of 3, 3 -diaminobenzidine in phosphate buffer at a pH of 7 .3, in the presence of 0.12 percent of H2O2 Then...

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 of DNA loading on the physical and ... remaining 15-20% of DNA could be released within the following 4- 5 days This time scale of release is comparable to other dosage forms, like nanoparticles and microparticles On the other hand,...

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 separately An equal volume of both solutions ... healing is observed for samples A1, B1, B3, and C1 Furthermore, this also confirms that during the progress of bone healing, tissue reabsorbing/remodeling, and the in growth of blood vessel are interactively...

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) on the molecular integrity of plasmid ... maintained after going through the processes of spray drying, supercritical CO2 foaming and post-processing conditions (handling of scaffold, incubations, and lyophilization) As shown in Figure 7.7b,...

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 constant rate of the in vitro release processes ... an initial and significant release of DNA is demanded in order to optimize this kind of devices Lysine, an α-amino acid of chemical formula HO2CCH(NH2)(CH2)4NH2, pKa 10.54 and hydrophobility of...

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 pepetide modified foams The sustained release of ... results indicate that the bioactivity of BMP-2 plasmid released from all the three kinds of scaffolds was well maintained, which helped improve the formation of new bone and the healing of segmental...

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 by removal of screws securing the back panel ... potential recovery of tonnes of liquid crystals with a market value of between 27 and 187 million dollars dependent on liquid crystal quality; 900 kg of indium and 8,000 tonnes of optical quality...

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- sonic irradiation on curcumin extraction from C longa rhizome ... rhizomes ( ) % Extraction of curcumin using ethanol from ethanol soaked curcuma powder, ( ) % extraction of curcumin using ethanol from water soaked curcuma powder and ( ) % extraction of curcumin...

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Báo cáo khoa học: " Effects of epinephrine and vasopressin on end-tidal carbon dioxide tension and mean arterial blood pressure in out-of-hospital cardiopulmonary resuscitation: an observational study" pptx

... suggest that vasopressin could be more potent than epinephrine in increasing the cardiac output Table End-tidal pressure of carbon dioxide and mean arterial blood pressure in two groups of cardiac ... KB, Sanders AB, Otto CW, Ewy GA: Effects of graded doses of epinephrine on both noninvasive and invasive measures of myocardial perfusion and blood flow during cardiopulmonary resuscitation Crit ... MAP, mean arterial blood pressure; petCO2, end-tidal pressure of carbon dioxide epinephrine is associated with adverse cardiac effects, including postresuscitation myocardial dysfunction and increased...

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 39: GC results of essential oil from ... results of essential oil from Lemongrass, Leaves (RSM) 169 Appendix I: Analyses results of essential oil from Lemongrass, stems (RSM) 174 x Appendix J: Effects of extraction conditions on extraction...

DETERMINATION OF ORGANIC COMPOUNDS IN DRINKING WATER BY LIQUID-SOLID EXTRACTION AND CAPILLARY COLUMN GAS CHROMATOGRAPHY/MASS SPECTROMETRY pdf

... METHOD 525.2 DETERMINATION OF ORGANIC COMPOUNDS IN DRINKING WATER BY LIQUID-SOLID EXTRACTION AND CAPILLARY COLUMN GAS CHROMATOGRAPHY/MASS SPECTROMETRY 1.0 SCOPE AND APPLICATION 1.1 This ... procedures for determination of organic compounds in finished drinking water, source water, or drinking water in any treatment stage The method is applicable to a wide range of organic compounds that ... portion of the sample into the solvent reservoir The water sample will drain into the cartridge, and from the exit into the suction flask Maintain the packing material in the cartridge immersed in water...

Báo cáo lâm nghiệp: "The successional status of tropical rainforest tree species is associated with diﬀerences in leaf carbon isotope discrimination and functional traits" pot

... between leaf carbon isotope discrimination (∆) and intrinsic water-use eﬃciency (WUE = A/gs ) for potted seedlings of 22 tropical rainforest species grown in non-limiting environmental conditions in ... 57] Leaf carbon traits of tropical rainforest seedlings studied here were in agreement with general trade-oﬀs since carbon assimilation increases with increasing N and SLA, and decreases with increasing ... ones in an in situ experiment on saplings in BCI, Panama [15] Furthermore, sunlit leaf carbon isotope discrimination (∆) of adult trees was lower in FL species as compared to SL and FE species in...

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Từ khóa: blending in supercritical carbon dioxide recent studies involving in situ blend formation using supercritical carbon dioxide degradation of organic compounds in aerobic and anaerobic environments adsorption of organic compounds by activated carbon solubility of metal complexes in supercritical co2 monitoring of nitrogen compounds in the environment biota and food occurrence of corrinoid compounds in edible cyanobacteria biosynthesis of corrinoid compounds in cyanobacteria assessment of cholesterol homeostasis in astrocytes and neurons analysis of volatile compounds in the headspace of rice using spme gc ms v— measurement of cholesterol crystallization in bile iii— thermodynamics of calcium salts in bile the potential use of triterpene compounds in dendritic cells based immunotherapy hppe data of copolymer solutions in supercritical fluids toxicity of chlorophenolic compounds in aquatic biota Nghiên cứu sự biến đổi một số cytokin ở bệnh nhân xơ cứng bì hệ thống Nghiên cứu sự hình thành lớp bảo vệ và khả năng chống ăn mòn của thép bền thời tiết trong điều kiện khí hậu nhiệt đới việt nam Nghiên cứu tổ chức pha chế, đánh giá chất lượng thuốc tiêm truyền trong điều kiện dã ngoại Một số giải pháp nâng cao chất lượng streaming thích ứng video trên nền giao thức HTTP Nghiên cứu vật liệu biến hóa (metamaterials) hấp thụ sóng điện tử ở vùng tần số THz Nghiên cứu tổ chức chạy tàu hàng cố định theo thời gian trên đường sắt việt nam Giáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôit Giáo án Sinh học 11 bài 13: Thực hành phát hiện diệp lục và carôtenôit Phát triển mạng lưới kinh doanh nước sạch tại công ty TNHH một thành viên kinh doanh nước sạch quảng ninh Nghiên cứu về mô hình thống kê học sâu và ứng dụng trong nhận dạng chữ viết tay hạn chế Nghiên cứu khả năng đo năng lượng điện bằng hệ thu thập dữ liệu 16 kênh DEWE 5000 Định tội danh từ thực tiễn huyện Cần Giuộc, tỉnh Long An (Luận văn thạc sĩ)Chuong 2 nhận dạng rui ro Kiểm sát việc giải quyết tố giác, tin báo về tội phạm và kiến nghị khởi tố theo pháp luật tố tụng hình sự Việt Nam từ thực tiễn tỉnh Bình Định (Luận văn thạc sĩ)Quản lý nợ xấu tại Agribank chi nhánh huyện Phù Yên, tỉnh Sơn La (Luận văn thạc sĩ)BT Tieng anh 6 UNIT 2 Giáo án Sinh học 11 bài 14: Thực hành phát hiện hô hấp ở thực vật BÀI HOÀN CHỈNH TỔNG QUAN VỀ MẠNG XÃ HỘI HIỆU QUẢ CỦA MÔ HÌNH XỬ LÝ BÙN HOẠT TÍNH BẰNG KIỀM MÔN TRUYỀN THÔNG MARKETING TÍCH HỢP