نتایج جستجو برای: vv solvent comparing to acetone procedure moreover

تعداد نتایج: 10722938  

Journal: :Journal of biomedical materials research. Part A 2004
Edward A Sander Alina M Alb Eric A Nauman Wayne F Reed Kay C Dee

Poly(lactide-co-glycolide) (PLGA) is used in many biomedical applications because it is biodegradable, biocompatible, and FDA approved. PLGA can also be processed into porous tissue scaffolds, often through the use of organic solvents. A static light scattering experiment showed that 75/25 PLGA is well solvated in acetone and methylene chloride, but forms aggregates in chloroform. This led to a...

Journal: :Clinical chemistry 1991
K E Brooks N B Smith

We describe a method for efficiently extracting basic, neutral, and weakly acidic drugs from plasma for toxicological analysis by gas chromatography-mass spectrometry (GC/MS). The 2-mL plasma sample is diluted with an equal volume of saturated NaCl containing triethylamine, 10 mmol/L, and then extracted twice with 4 mL of an equivolume solution of dichloromethane/acetone. The organic (top) phas...

Journal: :Journal of Chemistry 2021

Isolation and enrichment of multiclass pesticides’ residue, namely, fungicides (benalaxyl), herbicides (atrazine), carbamate insecticides (carbofuran), organophosphate (chlorpyrifos), organochlorine (4,4′-DDT), pyrethroid (bifenthrin), were made by combining acetone-based salting-out assisted extraction with the dispersive liquid-liquid microextraction (SADLLME) method, followed high-performanc...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه رازی - پژوهشکده فنی و مهندسی 1388

asymmetric polyethersulfone (pes) microfiltration flat sheet membranes were composed by the phase inversion method (pim) and were used as supports. composite membranes were fabricated by coating silicone rubber as selective layer. effect of different concentrations of pes and pdms and different solvent such as nmp, dmf and dms effects as pes solvents and support thickness and different coagulat...

2016
Hemali Padalia Sumitra Chanda

Bacteria have evolved numerous defences against antimicrobial agent and drug resistance in pathogen is on rise. This is due to rapid development of multi-drug resistance, limited anti-bacterial spectrum and adverse effects of available anti-microbial agents. This necessitates the search for new antimicrobials with diverse structures and novel mechanism of action. Flowers are mostly used for orn...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه فردوسی مشهد - دانشکده علوم 1377

chapter one is devoted to a moderate discussion on preliminaries, according to our requirements. chapter two which is based on our work in (24) is devoted introducting weighted semigroups (s, w), and studying some famous function spaces on them, especially the relations between go (s, w) and other function speces are invesigated. in fact this chapter is a complement to (32). one of the main fea...

Journal: :Lebensmittel-Wissenschaft & Technologie 2021

Persimmon byproduct upcycling was performed by solvent-assisted extraction (SAE) to obtain dietary fiber (DF). The effect of SAE on DF modulation studied specific beneficial and pathogenic strains before after the in vitro digestion process. Overall, digested samples extracted using acetone as a solvent (dCET) showed higher ( p < 0.05) prebiotic activity scores (PASs) bacteria such Bifidobacter...

2016
Ramezan Sadeghi Farzad Kobarfard Hassan Yazdanpanah Samira Eslamizad Mitra Bayat

Dispersive liquid-liquid microextraction (DLLME) combined with gas chromatography-mass spectrometry (GC-MS) was used for the extraction and determination of 13 polycyclic aromatic hydrocarbons (PAHs) in mineral water samples. In this procedure, the suitable combination of extraction solvent (500 µL chloroform) and disperser solvent (1000 µL acetone) were quickly injected into the water sample (...

2015

Extracts of Riccinus communis were made in mid-polar solvent acetone and non-polar solvent, petroleum ether by using fresh stem, leaves and tender fruits. Bioassay and Minimum Inhibitory Concentration (MIC) was done against various gram positive and gram negative bacteria by agar cup method. Significant activity was found in all acetone extracts against mainly gram positive bacteria and some gr...

پایان نامه :وزارت علوم، تحقیقات و فناوری - پژوهشگاه شیمی و مهندسی شیمی ایران - پژوهشکده شیمی تجزیه و معدنی 1390

hydrochlorothiazide (hct) is a diuretic agent which is shown to be effective in the treatment of hypertension. literature reports have demonstrated that urinary excretion data may be used to assess the bioavailability of various formulations containing this thiazide. also hct consumption by the athletes is one of the drugs which should be regulated by world anti-doping agency (wada), because of...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید