Search Within
114413
Applied Filters:
Keyword:'114413'
Showing 1-30 of 33 results for "114413" within Papers
Shigui Yuan et al.
Environmental science & technology, 42(16), 6092-6099 (2008-09-05)
Two different sulfonephthalein indicators, cresol red (CR) with a pKa of approximately 8.3 and bromothymol blue (BTB) with pKa of approximately 7.4, were tested for an analysis of freshwater over a broad range of pH and total alkalinity values. Measurements
S T Tay et al.
Mycoses, 51(6), 515-519 (2008-05-24)
Cryptococcus albidus and C. laurentii were the predominant non-neoformans cryptococci isolated during an environmental sampling study for C. gattii at Klang Valley, Malaysia. Cryptococcus gattii was not isolated from any of the environmental samples. Cryptococcus albidus and C. laurentii were
Joseph A Price
Journal of biochemical and biophysical methods, 70(3), 441-444 (2006-12-16)
Phospholipase A(2) is an important enzyme in various pathologies. Although fluorescent substrate assays for it have been recently developed, there is a need for an assay with inexpensive commercially available substrates, useful when samples interfered with fluorescent assays, that is
S G Cardoso et al.
Die Pharmazie, 62(1), 34-37 (2007-02-14)
Simple extraction-free spectrophotometric methods have been developed for the determination of carvedilol (CAR). The methods were based either on charge-transfer reaction of the drug with the sigma-acceptor iodine, in acetonitrile, or on ion-pair formation with the acidic sulphophthalein dyes bromothymol
Khaled M Darwish et al.
Pakistan journal of pharmaceutical sciences, 25(1), 207-217 (2011-12-22)
An easy, precise and valid extractional-spectrophotometric technique is described for the assessment of metronidazole (MNZ), tinidazole (TNZ), ornidazole (ONZ) and secnidazole (SNZ) in pure state and in their pharmaceutical formulations. The technique includes first the reduction of above cited drugs
Camilo E La Rotta H et al.
Enzyme and microbial technology, 48(6-7), 487-497 (2011-11-25)
The bioelectrochemical behavior of three triphenylmethane (TPM) dyes commonly used as pH indicators, and their application in mediated electron transfer systems for glucose oxidase bioanodes in biofuel cells was investigated. Bromophenol Blue, Bromothymol Blue, Bromocresol Green were compared bioelectrochemically against
Bartlomiej Kowalczyk et al.
Nanoscale, 2(11), 2366-2369 (2010-10-13)
Films comprising metal nanoparticles are assembled on the surfaces of liquid droplets of different shapes and macroscopic dimensions. These films are reinforced by dithiol crosslinks and are mechanically rugged yet permeable to the diffusion of small molecules.
Julia Schumacher et al.
Molecular plant-microbe interactions : MPMI, 28(6), 659-674 (2015-01-28)
Botrytis cinerea, the gray mold fungus, is an important plant pathogen. Field populations are characterized by variability with regard to morphology, the mode of reproduction (conidiation or sclerotia formation), the spectrum of secondary metabolites (SM), and virulence. Natural variation in
Bambang Kuswandi et al.
Talanta, 74(4), 613-618 (2008-03-29)
An optical fiber biosensor consisting of acetylcholinesterase (AChE) and bromothymol blue (BTB) doped sol-gel film was employed to detect organophosphate pesticide chlorpyrifos. The main advantage of this optical biosensor is the use of a single sol-gel film with immobilized AChE
Russell W McGifford et al.
Analytica chimica acta, 662(1), 44-50 (2010-02-16)
A novel binding phase was developed for use in diffusive gradients in thin-film (DGT) sampling for Cu(II) by employing methylthymol blue as a chelating and chromogenic agent. Methylthymol blue was adsorbed onto beads of Dowex 1 x 8 resin (200-400
Sevgi Tatar Ulu
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 67(3-4), 778-783 (2006-10-13)
A simple, rapid, accurate, precise and sensitive colorimetric method for the determination of finasteride in tablets is described. The proposed methods are based on the formation of ion-pair complexes between the examined drug with bromophenol blue (BPB), bromocresol green (BCG)
Xiongwei Xu et al.
Chemical & pharmaceutical bulletin, 58(6), 788-793 (2010-06-05)
A sensitive and selective electrochemical method for simultaneous determination of ascorbic acid (AA), dopamine (DA), and uric acid (UA) using an electropolymerized bromothymol blue (BTB)-modified glassy carbon electrode (GCE) was developed. The electrochemically synthesized film was investigated using electrochemical impedance
Kristina Jurcic et al.
Journal of chromatography. A, 1134(1-2), 317-325 (2006-10-07)
An effective sample preconcentration technique for proteins and peptides was recently developed using capillary electrophoresis (CE) with discontinuous buffers [C.A. Nesbitt, J.T.-M. Lo, K.K.-C. Yeung, J. Chromatogr. A 1073 (2005) 175]. Two buffers of different pH created a junction to
Mariana A Sanchez et al.
Analytica chimica acta, 694(1-2), 95-99 (2011-05-14)
Liquid-liquid microextraction without phase segmentation was implemented in a multicommuted flow system for determination of the anti-hypertensive diltiazem. The procedure was based on ion pair formation between the drug and the dye bromothymol blue at pH 3.5. The detection was
K R Klein et al.
Journal of clinical microbiology, 47(11), 3669-3672 (2009-10-02)
Cryptococcus neoformans and Cryptococcus gattii are closely related pathogenic fungi. Cryptococcus neoformans is ecologically widespread and affects primarily immunocompromised patients, while C. gattii is traditionally found in tropical climates and has been reported to cause disease in immunocompetent patients. l-Canavanine
Reza Amin et al.
Micromachines, 11(6) (2020-07-01)
To transform from reactive to proactive healthcare, there is an increasing need for low-cost and portable assays to continuously perform health measurements. The paper-based analytical devices could be a potential fit for this need. To miniaturize the multiplex paper-based microfluidic
Moglan Simona et al.
Revista medico-chirurgicala a Societatii de Medici si Naturalisti din Iasi, 116(3), 914-919 (2013-01-01)
Enalapril is an angiotensin-converting enzyme inhibitor widely used in the treatment of hypertension and heart failure. To design and validate a simple and sensitive spectrophotometric method. This method is based on a ternary complex formation between enalapril, copper (II), and
Luyang Li et al.
Journal of chromatographic science, 53(2), 307-311 (2014-07-12)
The roots of Berberis plants are widely used as a traditional Chinese medicine called "Sankezhen", having the activities of antibacterial and anti-inflammatory, and the ingredients are alkaloids. This work aims to study and compare the total alkaloids and individual alkaloid
Olga D Bochkova et al.
Colloids and surfaces. B, Biointerfaces, 92, 327-333 (2012-01-03)
The quenching effect of dyes (phenol red and bromothymol blue) on Tb(III)-centered luminescence enables to sense the aggregation of cationic and anionic surfactants near the silica surface of Tb-doped silica nanoparticles (SN) in aqueous solutions. The Tb-centered luminescence of non-decorated
X M Li et al.
Die Pharmazie, 63(9), 638-640 (2008-09-30)
A simple, sensitive, and accurate spectrophotometric method has been developed for the assay of TRODAT-1 hydrochloride in lyophilized kit. The method is based on the formation of ion-pair association complex of TRODAT-1 with bromothymol blue (BTB) in disodium hydrogen phosphate/citric
Patricia Balderas-Hernández et al.
Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy, 69(4), 1235-1245 (2007-08-25)
This work presents the results obtained from a spectrophotometry study performed on some indicators of the sulfonphtaleins like phenol red (PR), thymol blue (TB), bromothymol blue (BTB), xylenol orange (XO) and methylthymol blue (MTB). During the first stage the acidity
Yuji Suzuki
Analytical sciences : the international journal of the Japan Society for Analytical Chemistry, 24(8), 1061-1064 (2008-08-12)
In the dye-binding method, the absorbance increase caused by a protein error of a pH indicator is observed only in a restricted pH range. However, this pH range in the presence of a detergent has not yet been examined. Thus
Atchareeya Nopwinyuwong et al.
Talanta, 81(3), 1126-1132 (2010-03-20)
A colorimetric mixed pH dye-based indicator with potential for the development of intelligent packaging, as a "chemical barcode" for real-time monitoring of intermediate-moisture dessert spoilage, is described. This on-package indicator contains mixed pH-sensitive dyes, bromothymol blue and methyl red, that
S C Jung
Water science and technology : a journal of the International Association on Water Pollution Research, 63(7), 1491-1498 (2011-04-22)
In this study, TiO(2) photo-catalyst balls produced by the chemical vapour deposition method were used for degradation of organic dyes in which simultaneous irradiation of microwave and UV was evaluated. An electrodeless UV lamp that emits UV upon the irradiation
Zeynep Aydogmus et al.
Journal of AOAC International, 90(5), 1237-1241 (2007-10-25)
Two simple and sensitive extractive spectrophotometric methods have been developed for determination of zolmitriptan (ZTP) in tablets. These methods are based on the formation of yellow ion-pair complexes between ZTP and tropaeolin OO (TPOO) and bromothymol blue (BTB) in citrate-phosphate
Qiaoli Yue et al.
Journal of fluorescence, 21(3), 1131-1135 (2010-12-21)
We synthesized ZnO quantum dots (QDs) simply in alcoholic solution, and investigated the interaction between ZnO QDs and bromothymol blue. The structural, morphological, size and spectral properties of ZnO QDs were studied. It was found that ZnO QDs were spherical
Solimar G Machado et al.
Journal of food science, 80(8), M1842-M1849 (2015-07-21)
The storage of fresh raw milk at low temperature does not prevent proliferation of psychrotrophic bacteria that can produce heat-resistant proteolytic enzymes contributing to the reduced shelf life of dairy products. This study aimed to identify the dominant psychrotrophic proteolytic
Sabrine S Jensen et al.
European journal of pharmaceutical sciences : official journal of the European Federation for Pharmaceutical Sciences, 69, 26-36 (2015-01-13)
For parenteral biopharmaceuticals, subcutaneous diffusion and, in the case of solid implants or suspensions, dissolution may govern the clinical profile of the drug product. Insight into the dissolution and diffusion processes of biopharmaceuticals after parenteral administration is fundamental in the
Olga A Zaporozhets et al.
Analytica chimica acta, 597(1), 171-177 (2007-07-31)
Solid-phase spectrophotometric and visual test-methods of fluoride and oxalate determination are proposed. The methods are based on the competitive reactions of ZrOCl2 with methylthymol blue immobilized on silica gel and fluoride or oxalate in solution. Absorbance of the solid-phase reagent
Andrea Pastore et al.
Talanta, 219, 121251-121251 (2020-09-06)
A pH colorimetric sensor array (CSA) with fast response time (<1 min) using only one acid-base indicator, Bromothymol Blue (BB), was prepared and characterized by modulating the amount, C, of the surfactant Hexadecyltrimethylammonium p-toluenesulfonate between 0 and 0.3725 gCTApTs/gprecursor with a
Page 1 of 2