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Extraction constants (Kex±) for the extraction of sodium salts (NaA) with 18-crown-6 ether (18C6) from water (w) into nitrobenzene (NB) were determined at 298 K, together with the determination of individual distribution constants (KD,A) of several pairing anions A−. The symbols Kex± and KD,A were defined as .. Read More
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Removal and Analysis of Mercury (II) From Aqueous Solution by Ionic Liquids
D2EHP-] and 1-methyl-imidazolium di(2-ethylhexyl) phosphate [MIm+][D2EHP-] were synthesized and tested as extractants in the batch removal of mercury (II) from aqueous solution. The influence of contact time, aqueous to organic phase’s volume ratio, initial concentration of Hg (II), IL concentration, pH levels, ionic stren.. Read More
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Selected-ion monitoring (SIM) mode mass selective detection was developed and validated for the trace analysis of an impurity, methane sulfonyl chloride as an impurity in Itraconazole (ICR) active pharmaceutical ingredient (API). The analytical method validation is essential for analytical method development and tested extensive.. Read More
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Synthesis, structural, electronic, and magnetic characterization of two [CuII 2(thb)] (thb = N,N,N’,N’- tetrakis-{3-[(2- hydroxibenzyliden)-amine]propyl}-1,4-butanodiamine)]) crystalline phases (1a and 1b) are reported. Both, 1a and 1b, showed free radical scavenging activity, which was quantified by the DPPH free ra.. Read More
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In this research work we have tried to emphasis that the synergistic approach is required wherein during method development sample processing and instrument i.e., mass spectrometershall be evaluated in synchronized manner to get the best possible combination of processing technique and instrument model to get a method with no or.. Read More
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The work describes the application of columns with high-polar stationary liquid phases based on pyridinium ionic liquids for GC × GC separation of bio-oil and product of coal pyrolysis. By using inverse combination columns- the first ionic liquid column, the second is HP-5 the good separation results have been obtained. In.. Read More
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Mercury is one of the most poisonous elements found on earth bonded to sulfhydryl groups of enzymes and proteins, thereby inactivating vital cell functions. Indeed this has drawn the attention of many environmental researchers who have been attempting through various mean to expunging mercury from these contaminated medium. Biol.. Read More
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Delignificant pretreatments are fundamental in lignocellulosic materials preprocessing to remove lignin from biomass. Current wet chemical methods are time-consuming, labor-intensive and use hazardous reagents. Near Infrared Spectroscopy (NIRS) provides rapid and non-destructive analysis, and has shown promising results. Spectra.. Read More
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Pain is often considered as the most feared symptom amongst individuals living with cancer. It can arrive at any stage during the course of the illness. In 15% to 20% of patients, conventional analgesic therapy either fails to relieve pain or induces adverse effects. Use of analgesic admixture has been recommended by the most re.. Read More
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Energy Dispersive X-Ray Fluorescence Analysis of Amapá Milk (Brosimum ssp.)
Latex from Brosimum species has several indications in folk medicine and is also largely ingested at the Amazon Region with food purposes, to replace cow’s milk and as base for chewing gum. The presence of inorganic substances with potential to be irritating or toxic were analysed by Energy Dispersive X-Ray Fluorescence mu.. Read More
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Characteristics of spatiotemporal fluctuation of gray values at a single-pixel level within bright field, label free image of a cell are explored in a variety of physiological and mitochondrial dysfunction states. From these fluctuations, the gray level information entropy (GLIE) is calculated and its derivative measures such as.. Read More
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The use of a combination of 5HT3 receptor antagonist, a NK-1 receptor antagonist and dexamethasone has been classified to be state of the art in patients receiving highly as well as moderately emetogenic chemotherapy like cisplatin and anthracyclines. The administration of the ad-hoc admixture of fosaprepitant, dexamethasone and.. Read More
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Endocannabinoids and related N-acylethanolamines (NAEs) are lipid mediators involved in a number of physiological and pathological mechanisms in peripheral tissues. Microdialysis (MD) technique allows continues sampling of endogenous substances in the interstitial fluids of the tissues. The main limitation of MD sampling of lipo.. Read More
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In this paper, the separation of metoprolol tartarate enantiomers using conventional achiral chromatography was followed employing experimental design 24. Design was useful tool in evaluation of chromatographic behavior of enantiomers. For the separation, Supelcosil LC18 4.6 mm × 250 mm, 5 m particle size column was used. .. Read More
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After development and implementation of Mat-pKa software, since 3 years, pKa(s) determinations for approximately 70 compounds were successfully conducted. But a remaining objective was to enlarge the capabilities of this software to resolve cases for non-soluble compounds in aqueous phases. Until now, pKa(s) calculations were ba.. Read More
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The use of biological warfare agents by terrorists remains a global concern. While there has been substantial effort since the 2001 distribution of Bacillus anthracis spores through the US Postal System to develop analyzers to detect this and other biological agents, the analyzers lack sensitivity, lack specificity (produce high.. Read More
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Pyrolysis is a thermal process for converting various biomasses, wastes and residues to produce high-energydensity fuels (bio-oil). In this paper, we have done some important analysis of bio-oil which is obtained from the pyrolysis of agricultural wastes - discarded soybean frying oil, coffee and eucalyptus sawdust in the presen.. Read More
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In this work, two fast and highly sensitive analytical methods, based on UV-VIS spectroscopy, were adapted for its use on the determination of specific activity (SA) and Tellurium (IV) concentration, in 124I- solutions produced by the 124Te(p,n)124I reaction. The solutions analyzed showed high specific activity (209 - 216 Ci/mg).. Read More
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The electrochemical analysis of dopamine and uric acid was performed at Pregabalin modified carbon paste electrode by cyclic voltammetry in 0.2M phosphate buffer solution of pH 7.5 at scan rate 100 mV/s. The Pregabalin modified carbon paste electrode showed an increase in anodic peak current as compared to the bare carbon paste .. Read More
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Zinc, iron and copper are essential mineral nutrients for the human body to function. It is also known that there are biological processes which relate to metals in the body including cells. Therefore, understanding about intracellular metals is important for the regeneration medicine. Intracellular metals were thought to be abl.. Read More
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