Results 41 to 50 of about 19,110 (124)

Determination of Quinone Reductase Activity

open access: yesBio-Protocol, 2015
We recently demonstrated the presence of a quinone detoxification pathway present in Firmicutes. It is based on two enzyme activities, namely a quinone reductase, YaiB, described here, and a hydroquinone dioxygenase, YaiA, described in a separate ...
Stefano Mancini, Marc Solioz
doaj   +1 more source

Current clinical use of depigmenting agents

open access: yesDermatologica Sinica, 2014
A variety of topical depigmenting agents have been used clinically, with varying degrees of success. To date, the most effective topical treatment is a triple-combination agent containing hydroquinone (HQ), tretinoin, and fluocinolone acetonide. However,
Jung Won Shin, Kyoung Chan Park
doaj   +1 more source

Adsorptive Stripping Voltammetric Determination of Hydroquinone using an Electrochemically Pretreated Glassy Carbon Electrode [PDF]

open access: yesPakistan Journal of Analytical & Environmental Chemistry, 2008
A simple and efficient adsorptive stripping voltammetric (AdSV) method was developed for the determination of hydroquinone at an electrochemically pretreated glassy carbon (GC) electrode in waste water.
Abdul Niaz1,   +4 more
doaj  

Single stage surgery for Blepharophimosis syndrome

open access: yesIndian Journal of Ophthalmology, 2012
Purpose: The purpose of this study was to report the functional and cosmetic outcome of single stage surgical procedure for correction of the classic components of Blepharophimosis syndrome.
Kasturi Bhattacharjee   +4 more
doaj   +1 more source

Preparation of Poly-N-Methylpyrrole Coated Platinum Modified Electrode in Chloroform in the Presence of Various Supporting Electrolytes and Its Use for the Catalytic Oxidation of Ascorbic Acid and Hydroquinone [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2002
The electrochemical preparation of poly-N-methylpyrrole (PMPy) coated platinum electrode in chloroform in the presence of tetrabutylammonium Perchlorate, hexafluorophosphate, hydrogensulphate, Periodate and Iodide as supporting electrolytes was performed.
Jahanbakhsh Raoof   +2 more
doaj  

KINETICS AND MECHANISM OF AERIAL OXIDATION OF HYDROQUINONE IN A DEVELOPER SOLUTION AND DETERMINATION OF DEVELOPER'S HALF-LIFE AT 20°C [PDF]

open access: yesJournal of Sciences, Islamic Republic of Iran, 1995
The aerial oxidation of hydroquinone in a freshly prepared developer solution at 20°C has been studied through the measurement of concentration changes by a spectrophotometric method. The concentration of consumed hydroquinone is directly proportional to
doaj  

Analysis of Hydroquinone in Face Whitening Cream by UV-Vis Spectrophotometry and GC-MS Spectrometry

open access: yesIndonesian Journal of Chemical Research
The analytical method to determine the compound content in both food and cosmetic products must be carried out carefully to ensure the validity of the analysis results.
Karnelasatri Karnelasatri   +4 more
doaj  

Molecular basis of the explosive defence response in the bombardier beetle Brachinus crepitans

open access: yesRoyal Society Open Science
Bombardier beetles have evolved a sophisticated and unique chemical defence mechanism involving controlled explosions within their paired defensive glands, producing a hot, benzoquinone-rich defensive spray.
Heiko Vogel   +5 more
doaj   +1 more source

Comparative Study of Thrapeutic Effcts of%20 Azelaic Acid and %4 Hydroquinone Cream in Treatment of Melasma

open access: yesپزشکی بالینی ابن سینا, 2017
Introduction: Melasma is a recurrent, symmetric, and chronic acquired hyperpimentation that presents gray-brown macules and patches with determined margins in areas exposed to light.
M Bahadori   +3 more
doaj  

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