Phase Separator

Investigation of the mobile phase for separating amlodipine and valsartan using the isocratic elution method and validation of the simultaneous quantification of amlodipine and valsartan in three different dissolution media with pH of 1.2, 4.5, and 6.8.

7p vinatisu 29-08-2024 0 0   Download

In this study, an evaluation of the enantioselective of a chiral flavanone with 2'-OH substitution (5,7,2'- trihydroxyflavanone) on ring C was studied by high performance liquid chromatography using the cellulose tris(3,5- dimethylphenyl carbamate)-based stationary phase with n-hexane and iso-propanol doped with 0.1% (v/v) trifluoroacetic acid as a mobile phase.

6p dianmotminh02 03-05-2024 2 2   Download

The effects of polyethylene glycol (PEG), PEG concentration, molecular weight, sodium citrate, and sodium chloride (NaCl) on yield and purification factor were studied. The highest purification factor (4.5) and yield (83%) were obtained in system PEG 6000 (14% w/w)-sodium citrate (18% w/w) with 6% (w/w) NaCl.

6p mudbound 10-12-2021 11 0   Download

The shift in Raman and change in absorption spectra are evidence that would relate to the structure change or disorder and impurity in the samples. From the above results, a critical substituent content at which the structural phase change takes place is shown.

7p tamynhan8 04-11-2020 14 2   Download

Source and sink activity measured after anthesis in six poplar rice cultivars. The experiment was laid in randomized block design with six cultivars MTU-1001, MTU1010, MTU-7029, BPT-2231, BPT-3291 and BPT-5204 replicated four times. After anthesis, top three leaves separately, top three internodes collectively, panicle axis and grain of main culm were sampled at seven day interval and analysed for biochemical parameters that serve remobilization of nutrients. During the initial and later halves of the sampling, there was a shift in higher amylase activity from third to flag leaves.

8p gaocaolon5 14-06-2020 10 1   Download

Thiết lập các phản ứng Conversion và Equilibrium, 5 kiểu phản ứng được mô phỏng, các phản ứng có thể có trong: Tank, separator, three Phase Separator, column là những nội dung chính trong bài giảng chem 4 "Reactions". Mời các bạn cùng tham khảo nội dung bài giảng để nắm bắt thông tin chi tiết.

62p ntchung8894 11-12-2015 61 6   Download

Các thiết bị phân tách được chia ra làm 3 nhóm: Các thiết bị tách lỏng khí Separator 2-pha và 3-pha, tính tháp chưng luyện Shortcut Column, thiết bị chia tách cấu tử Component Splitter. Nhằm giúp các bạn hiểu hơn về vấn đề này mời các bạn cùng tham khảo bài giảng "Separation Operations: Phase Separator, Shortcut Column, Component Splitter". Hy vọng nội dung bài giảng là tài liệu tham khảo hữu ích cho các bạn.

48p ntchung8894 11-12-2015 69 4   Download

The research part comprised a systematic study of the synthesis and phase separation of Interpenetrating Polymer Network (IPN) gels consisting of crosslinked polyurethane (CPU) and polymethacrylic acid (PMA). CPU was prepared by crosslinking polyaddition between the triblock polyalkylene oxide (ethylene oxide-propylene oxide-ethylene oxide), diisocyanate, crosslinker (triethanolamine) and chain extender (1,4-butanediol). IPN gels based on CPU and PMA were formed by the sequential interpenetrating polymerization (two-stage procedure).

5p uocvong04 24-09-2015 56 6   Download

Shikimic acid is an important product in the synthesis of the anti-influenza drug osseltamivir phosphate. LC-MS method was applied for the determination and quantification of shikimic acid from Vietnamese star anis (Illicium verum Hook.f.). Using the instrument system LC/MSD Agilent series 1110, separation was performed on a Zorbax SB-C18 RP (3.0x150 mm) column with water containing 0.1% formic acid and methanol as mobile phase. Analytes were detected both by DAD at 210 nm and by MS detectors.

6p uocvong03 24-09-2015 49 5   Download

5A, 4A and 3A zeolites were successfully prepared using solid seeds at pilot scale. The adsorption properties of 5A, 4A and 3A zeolites were determined by adsorption isotherm method. The results showed that water adsorption capacity and rate of 5A and 4A zeolites were higher than those of 3A zeolite. Even at low vapor pressure of water of 4 mmHg, adsorption capacity of 5A, 4A and 3A zeolites also reached about 23%, 22% and 17%, respectively, and was much higher than that of silicagel (5%).

5p uocvong03 24-09-2015 89 7   Download

Due to the high toxicity of arsenic and the poison effects to human being, identification and quantification of individual arsenic forms are important to appropriately measure the arsenic toxicity, environmental impact and health risk related to arsenic exposure. Arsenic species were quantified by HPLC-UV-HG-AAS. The separation was performed on an anion exchange Hamilton PRP-X100 (250 mm× 4,1 mm i.d.× 10 µm) column by using mobile phase A: 12 mmol/l KH2PO4- K2HPO4; pH = 6.5 and B: 24 mmol/l KH2PO4-K2HPO4; pH = 6.

6p uocvong02 24-09-2015 77 3   Download

Epoxy resin networks have been modified with hybrid copolymer consisting of an urethane prepolymer and a solid bisphenol A diglycidyl ether. Hybrid copolymer prepared from isocyanate-terminated urethane (NCOPUER) resulted in cured transparent epoxy networks with no discernible phase-separated morphology, as indicated by scanning electron microscopy.

6p uocvong01 24-09-2015 34 3   Download

The aim of Caffeine and chlorogenic acid separation from raw coffee beans using supercritical CO2 in water was to develop new process for extracting and separating hydrophilic and hydrophobic compounds from coffee beans using supercritical CO in water. In this work, experiments and simulation of the process has been conducted. Chlorogenic acid and caffeine from coffee beans were used as model compounds of hydrophilic and hydrophobic compounds, respectively.

8p phannguyen05 16-03-2015 60 5   Download

Conventional and saturation transfer electron paramagnetic resonance spectroscopy (EPR and ST EPR) was used to study the orientation of probe molecules in muscle fibers in different intermediate states of the ATP hydrolysis cycle. A separate procedure was used to obtain ST EPR spectra with precise phase settings even in the case of samples with low spectral intensity. Fibers prepared from rabbit psoas muscle were labeled with isothiocyanate spin labels at the reactive thiol sites of the catalytic domain of myosin....

10p research12 01-06-2013 38 6   Download

Antibacterial peptides were isolated fromhuman peripheral granulocytes of a healthy donor who had been treated with granulocyte-colony stimulating factor (G-CSF) and cortisol. Peptides were solubilized in acidi®ed chloroform/methanol, and partitioned in chloroform/methanol/water. Water-soluble polypeptides were separated by cation-exchange and reversed-phase chromatography. Several previously char-acterized antibacterial polypeptides were identi®ed; defen-sins 1±3, defensin 4, lysozyme, eosinophil cationic protein, and calgranulin A. ...

7p research12 23-04-2013 26 3   Download

A rat liver nuclear insoluble protein fraction was analyzed to investigate candidate proteins participating in nuclear architecture formation. Proteins were subjected to two-dimensional separation by reversed-phase HPLC in 60% formic acid and SDS⁄PAGE. The method produced good resolution of insoluble proteins. One hundred and thirty-eight proteins were separ-ated, and 28 of these were identified.

12p fptmusic 11-04-2013 62 2   Download

Depolarization and repolarization phases (D and R phases, respectively) of mitochondrial potential fluctuations induced by photoactivation of the fluorescent probe tetramethylrhodamine methyl ester (TMRM) were ana-lyzed separately and investigated using specific inhibitors and substrates. The frequency of R phases was significantly inhibited by oligomycin and aurovertin (mitochondrial ATP synthase inhibitors), rotenone (mitochond-rial complex I inhibitor) and iodoacetic acid (inhibitor of the glycolytic enzyme glyceraldehyde-3-phosphate dehydrogenase)....

11p awards 06-04-2013 48 2   Download

● Adsorption chromatography • The stationary phase is an adsorbent (like silica gel or any other silica-based packing) • The separation is based on repeated adsorption-desorption steps. ● Normal-phase chromatography • The stationary bed is strongly polar in nature (e.g., silica gel), and the mobile phase is nonpolar (such as n-hexane or tetrahydrofuran). • Polar samples are retained on the polar surface of the column packing longer than less polar materials.

28p qdung92ct 03-07-2012 81 11   Download

 IUPAC Definition: chromatography is a physical method of separation in which the components to be separated are distributed between two phases, one of which is stationary while the other moves in a definite direction  Stationary phase (SP): common name for the column packing material in any type of chromatography  Mobile phase (MP): liquid media that continuously flows through the column and carries the analytes  Analyte: the chemical species being investigated (detected and quantitatively measured) by an analytical method...

19p qdung92ct 03-07-2012 78 10   Download

Tuyển tập các báo cáo nghiên cứu về y học được đăng trên tạp chí y học quốc tế cung cấp cho các bạn kiến thức về ngành y đề tài: " Can visco-elastic phase separation, macromolecular crowding and colloidal physics explain nuclear organisation?

11p toshiba17 28-10-2011 35 2   Download