Posted by admin on Dec 31, 2016 in |
Let G=(V,E) be molecular graph with vertex set V (G) and edge set E(G) in which the set of vertices and the set of edges of the graph correspond to the atoms of the molecule and chemical bonds, respectively. We denote d(u,v) the distance between u and v i.e the length of the shortest path connecting u and v. The eccentricity of a vertex in V(G) is defined to be Recently, we proposed the fifth atom-bond connectivity index of a simple connected graph G as . In this paper, we present more study of the fifth atom-bond connectivity index and compute this new index of polycyclic aromatic...
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Posted by admin on Dec 31, 2016 in |
Background: Vidang (Embelia ribes Burm. f.) is a very famous plant for its anthelmintic activity. In Ayurveda, it is a first choice of drug for its krimighna action or to kill foreign pathogens. Embeliaro busta auct. Nonroxb., the other species of vidang is adulterated in Embelia ribes Burm. f. Therefore shastrokta or original vidang and its adulterant species were selected for the comparative study. Methods: Both aqueous and alcoholic extracts of fruits of both species of Embelia at 10, 20, 30% concentrations were tested for antimicrobial activity by agar well diffusion method against a range of gram-positive and gram-negative bacteria. Zone of inhibition of extracts were determined, then activity index and IC50 value was calculated. Results: Both ethanol and Aqueous extracts of Embelia ribes Burm. f. and Embeliaro busta auct. Nonroxb. inhibited the growth of all the tested strains of bacteria. Aqueous extract Embelia ribes Burm. f. has more potent action against microorganism Staphylococcus aureus, Escherichia coli, Klebsiellaaerogenes, ZOI (16mm,14mm,19mm respectively), AI(0.64, 0.78, 0.70 resp.), IC50 (1.751, 1.166, 1.641...
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Posted by admin on Dec 31, 2016 in |
Five novel benzimidazolium salts were synthesized as N-heterocyclic carbene (NHC) precursors (1a–e). They were characterized by different techniques. The antimicrobial activities of these compounds were tested. The compounds showed moderate activity against three Gram (+) and seven Gram (-) bacteria in comparison to tetracycline, which was used as the standard antibiotic, whereas all the compounds (1a-e) showed no activity against the test yeast C....
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Posted by admin on Dec 31, 2016 in |
Introduction: Measurement of glycated hemoglobin (HbA1c) and fructosamine has a growing role in the assessment of glycemic control but their use for screening purpose is questionable. Material and methods: The study was carried out on 50 controls and 50 patients suffering from hyperthyroidism from October 2014 to March 2015 at Geetanjali Medical College & Hospital, Udaipur (Rajasthan). Results: Fructosamine in hyperthyroid subjects (male & female) and control male & female (Mean ± SD) 141.87 ±41.14, 149.35 ± 49.82 and 223.54 ± 9.95, 224.15 ± 9.06 µmol/L respectively and the difference between them found statically significant. (P<0.001) Conclusion: The Fructosamine level was low in hyperthyroid patients as compared with...
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Posted by admin on Dec 31, 2016 in |
Ultrasound-assisted dispersive liquid-liquid micro extraction (UA-DLLME) was proposed for simultaneous determination of trace levels of Vitamin B1 (thiamine) and Vitamin B9 (folic acid) in the human urine and serum samples. High performance liquid chromatography (HPLC) coupled with chemometrics method was employed to analysis the extraxtants. Objective: The optimal conditions of the extraction recovery, including pH of sample solution, type and volume of extraction solvent, disperser solvent type and volume, temperature and time of ultrasound, centrifugation time and ionic strength were were studied step-by-step via one-factor-at-a time procedure. Then significant variables were chosen and considered to further optimize using the hybrid Box–Behnken design -genetic algorithm. UA-DLLME method with HPLC-UV and utilizing hybrid Box–Behnken design -genetic algorithm to optimize the extraction process was presented for the first time in this study. Under the optimized extractions, relative standard deviations (RSD) of the analyses less than 4% (n= 3) and detection limit of 3.09-11.15 ng mL. Recoveries for both thiamine and folic acid were in the ranges of 88–107%. As the result, the...
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