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Separating mixtures
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Part 1 book "Chemical process design and integration" includes content: The nature of chemical process design and integration, process economics, optimization, chemical reactors I – reactor performance, chemical reactors II – reactor conditions, chemical reactors III – reactor configuration, separation of homogeneous fluid mixtures I – distillation, separation of homogeneous fluid mixtures II – other methods, distillation sequencing.
272p
muasambanhan08
01-03-2024
4
1
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Ebook "Liquid separations with membranes: An introduction to barrier interference (Second edition)" presents a self-consistent approach to separations of liquids with membranes, contrasting equilibrium separations with the rate-controlling effects of barrier interference on mass transfer. Unlike equilibrium separations, which depend on the thermodynamic condition of the fluid mixtures alone, barrier separations additionally are subject to specific interactions of the mixture components with the barrier.
138p
lamquandat
28-12-2023
17
2
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Ebook "Help your kids with science: A unique step-by-step visual guide" sets out to explain the essentials of three key sciences biology, chemistry, and physics. In particular, it focuses on the curricula for these subjects taught in schools worldwide for students between the ages of 9 and 16. This is often a crucial time for developing an understanding of science. Many children become confused by the terminology, equations, and sheer scale of some of the topics.
258p
dangsovu
20-10-2023
5
3
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In the present study, PLS has been used to identify and quantify tetracycline and chlortetracycline without separation steps. In mixtures of one or two components, the use of chemometric tools avoided spectral interference between the target substances. The predictive ability of calibration models was evaluated and showed satisfactory results.
5p
vidoctorstrange
06-05-2023
7
2
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This paper examines how molecular weight affects the diffusion of molecules in the interface of laminar flow in a microfluidic channel. Two mixtures of PS with anisole and PEG were used to evaluate the effect of molecular weight on the microfluidic separation.
8p
vidudley
20-02-2023
5
2
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In this study, antimicrobial nanofibers were produced with the mixtures of polyvinyl alcohol (PVA) and cyclotide-rich fractions by electrospinning method. After extraction, the first separation was carried out with C18 flash chromatography and then fractioned into five separate parts by reversed-phase high-pressure liquid chromatography (RP-HPLC). The molecular weights of cyclotides in each fraction were determined by quadrupole time-of-flight liquid chromatography-mass spectrometry (Q-TOF LC-MS).
10p
lyhuyenthu
31-01-2023
5
1
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Conventional one-dimensional column-based liquid chromatographic (LC) systems do not offer sufficient separation power for the analysis of complex mixtures. Column-based comprehensive two-dimensional liquid chromatography offers a higher separation power, yet suffers from instrumental complexity and long analysis times.
8p
viginny
23-12-2022
9
3
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In the present study separation of enantiomers of some chiral neutral, basic and weakly acidic analytes was investigated on the chiral stationary phase (CSP) made by covalent immobilization of amylose tris(3-chloro-5-methylphenylcarbamate) onto aminopropylsilanized (APS) silica in nano-liquid chromatography (nano-LC) in aqueous methanol or acetonitrile mixtures.
8p
viginny
23-12-2022
7
3
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In this study, we present results obtained on the enantioseparation of some cationic compounds of pharmaceutical relevance, namely tetrahydro-ß-carboline and 1,2,3,4-tetrahydroisoquinoline analogs. In highperformance liquid chromatography, chiral stationary phases (CSPs) based on strong cation exchanger were employed using mixtures of methanol and acetonitrile or tetrahydrofuran as mobile phase systems with organic salt additives.
9p
viginny
23-12-2022
10
3
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Research on oligosaccharides, including the complicated product mixtures generated by lytic polysaccharide monooxygenases (LPMOs), is growing at a rapid pace. LPMOs are gaining major interest, and the ability to efficiently and accurately separate and quantify their native and oxidized products chromatographically is essential in furthering our understanding of these oxidative enzymes.
11p
viginny
23-12-2022
5
3
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There is a great need for efficient analysis of the composition of vegetable oils and fats, since it affects the physical and technical properties. However, due to the complex nature of these kind of samples, it is often difficult and costly. In the present study, we developed a Non-Aqueous Reversed-Phase HPLC method that can be used to separate and quantify different free fatty acids, fatty acid esters, monoacylglycerides.
11p
viginny
23-12-2022
8
3
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Ultra-thin MFI zeolite membranes with different Si/Al ratios (152, 47 and 26) were prepared on graded αalumina supports in the presence of organic template molecules and evaluated for separation of equimolar CO2/ CH4 mixtures at temperatures from 315 to 249 K.
7p
vironald
15-12-2022
4
2
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Separation of an aqueous mixture of 6-kestose/sucrose with zeolites: A molecular dynamics simulation
Extra-large pore zeolites are a small subset (21) among the whole list of 253 zeolites available. The discovery of new low-glycemic sugars is very attractive as new healthy additives in the food field. This is the case of the 6- kestose. In the present case, it appears in a mixture in aqueous solution together with sucrose, the separation of the mixture being necessary.
10p
vironald
15-12-2022
5
2
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Microporous organic polyimides are well suited for carbon dioxide separation from gas mixtures based on their polar surface and their tendency towards ultramicroporosity. Nevertheless, their application potential is limited due to an inherent insolubility and infusibility, preventing an easy processing into functional objects like membranes.
8p
vironald
15-12-2022
6
2
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Porous nanocomposite of polystyrene (PS) is fabricated by non-solvent induced phase separation, and with the addition of ZnO nanomaterials through electrospinning, the different evaporation rates of solvent/non solvent mixture causes phase separation and improves the porosity of the fiber
8p
vironald
15-12-2022
8
2
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Two mixtures of neutral cyclodextrins (CDs) were used in Electrokinetic Chromatography (EKC) to model and optimize the simultaneous enantiomeric separation of a group of seven drugs. Heptakis(2,6-di-Omethyl)-β-CD (DM-β-CD) combined with methyl-γ -CD (M-γ -CD) or with carboxyethyl-γ -CD (CE-γ -CD) was employed in a 25 mM formate buffer at pH 3.0 to have the drugs studied positively charged.
12p
vironald
15-12-2022
12
2
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The paper presents a new kind of stationary phase for gas chromatography based on deep eutectic solvents (DES) in the form of a mixture of L-proline (protonated with hydrochloric acid) as a hydrogen bond acceptor (HBA) and xylitol as a hydrogen bond donor (HBD) in a molar ratio of HBA:HBD 5:1.
8p
vironald
15-12-2022
4
2
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In this paper, we propose a novel method to effectively detect GNSS (Global Navigation Satellite Systems) spoofing signals. Our approach utilizes mixtures of Gaussian distributions to model the Carrier Phase’s Double Difference (DD) produced by two separated receivers.
6p
vimelindagates
18-07-2022
4
2
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Many different methods exist to adjust for variability in cell-type mixture proportions when analyzing DNA methylation studies. Here we present the result of an extensive simulation study, built on cell-separated DNA methylation profiles from Illumina Infinium 450K methylation data, to compare the performance of eight methods including the most commonly used approaches.
17p
viaristotle
29-01-2022
7
0
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The present study aimed to investigate the effect of microbial inoculation adding to corn silage on productive and reproductive performance of sheep. The weaning male and female lambs were fed separately in four groups received a basal diet consisting of concentrate feed mixture (CFM) plus wheat straw (WS).
10p
schindler
30-12-2021
11
0
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