A rapid and sensitive spectrophotometric method is proposed for determination of metronidazole and secnidazole. The method depends on the reduction of metronidazole and secnidazole molecule with zinc dust and hydrochloric acid flowed by diazotization and coupling with 8-quinolinol to give red colored chromogens easily measured spectrophotometrically which has lambda(max) = 500 nm. The experimen...

New, simple and sensitive spectrophotometric methods for the determination of rosiglitazone and pioglitazone have been developed. The method is based on the oxidation of 2, 4-dinitrophenyl hydrazine (2, 4DNP) and coupling of the oxidized product with rosiglitazone and pioglitazone to give intensely colored chromogen. Rosiglitazone and pioglitazone showed maximum absorbance at 421 nm and 480 nm ...

The aim of study was to develop and validate two simple, sensitive, and extraction-free spectrophotometric methods for the estimation of risperidone in both pure and pharmaceutical preparations. They are based on the charge transfer complexation reactions between risperidone (RSP) as n-electron donor and p-chloranilic acid (p-CA) in method A and 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ) i...

objective: very recent studies have reported positive effects of dietary nitrate on the oxygen consumption during exercise. this research aimed to study the effect of moderate dose of high-nitrate vegetables, watercress (nasturtium officinale) and red radish (raphanus sativus) compared with a control group on the incremental treadmill exercise test following a standard bruce protocol controlled...

amyloidosis cutis dyschromica (acd) is a rare form of macular amyloidosis characterized by hypo and hyperpigmented macules. here we described a 20 year old girl with diffuse hypo and hyperpigmentation since she was four years old. five other members of her family are also involved. biopsy of hyperpigmented lesions revealed increase of melanin in the basal layer, pigment incontinence and amorpho...

Article history: Received 22 December 2016 Accepted 27 December 2016 clinically relevant increase in theQT interval, especially in consideration that these were LQTS patients, and thus expected to have a prolonged QT intervals to begin with. As analogy, the guidelines for LQTS indicate that whenever mexiletine shortens the QTc by at least 40 ms it should be added to beta-blockers for chronic th...

Background: Recently, concerns have been raised regarding the environmental and public health safety of azo dyes, most widely used synthetic dyes. The membrane technique has introduced as one efficient methods for dye removal treatments. Polyvinylidene fluoride (PVDF) manipulated by surfactants was studied dye, carmoisine. Methods: PVDF prepared via non-solvent-induced phase separation (NIPS) t...

background: synthetic dyes have several harmful effects on human health as well as aquatic life. in this study, activated carbon (av-ac), based on aloe vera leaf shells, was used as a novel agricultural adsorbent, one that is low-cost and available for the removal of congo red (cr) as a carcinogenic dye from aqueous solutions. methods: in the batch system, the influence of different parameters ...

background : an outbreak investigation was carried out to determine the cause and confirm the source of food poisoning in deptsang village for implementing prevention and control measures. methods : we conducted a retrospective cohort study for the outbreak investigation. stool specimens were collected from cases to perform culture and antibiogram. the team also inspected the environment and hy...