Conventional isotachophoresis (ITP) can be used for pre-concentration of a single analyte, but preconcentration multiple analytes is time consuming due to handling and washing steps required the extensive buffer optimization procedure. In this work, we present programmable microfluidic platform (PMP) demonstrate fully automated ITP analytes. By interfacing PMP with ITP, selection repetitive pro...

Water oxidation is the bottleneck of artificial photosynthesis. Since first ruthenium-based molecular water catalyst, blue dimer, was reported by Meyer's group in 1982, catalysts based on transition metals have been widely employed to explore mechanism oxidation. Because requires harsh oxidative conditions, stability complexes under relevant catalytic conditions has always a challenge. In this ...

In the present review, we describe current knowledge about synthesis of borate crosslinked rhamnogalacturonan II (RG-II) and it physiological roles. RG-II is a portion of pectic polysaccharide with high complexity, present in primary cell wall. It is composed of homogalacturonan backbone and four distinct side chains (A-D). Borate forms ester bonds with the apiosyl residues of side chain A of t...

PURPOSE To investigate toxicity associated with buffers commonly used in topical ocular drug formulations using a human corneal-limbal epithelial (HCLE) and a human conjunctival epithelial (HCjE) cell model. METHODS HCLE and HCjE cells were incubated for 10, 30, or 60 minutes with 4 different buffers based on borate, citrate, phosphate, and Tris-HCl at 10, 50, and 100 mM concentrations. To de...

Mummification salts and mummified bones were assayed for borate. In two samples of mummification salt one from Deir el-Bahari (26th Dynasty, 700Ð600 BC) and salt from the embalming material of Tutankhamen (18th Dynasty, 1370Ð1335 BC) 3.9 and 2.1 μMol borate/ gram were found, respectively. Six mummified bone fragments from the Old Kingdom contained up to 1.2 μMol/gram. It is suggested that borat...

The purpose of the studies was to choose additives for eye drops containing cefazolin and the assessment of the influence of used additives and the storage temperature on the physicochemical properties and the stability of the eye drops. The drops were 1% sterile solutions of cefazolin in citrate buffer of pH 6.15-6.20. The drops were preserved with 0.002% thiomersal or 0.001% phenylmercuric bo...

A micellar electrokinetic capillary chromatography method was developed and validated for the simultaneous determination of ezetimibe and simvastatin in pharmaceutical preparations. The influence of buffer concentration, buffer pH, sodium dodecyl sulphate (SDS) concentration, organic modifier, capillary temperature, applied voltage, and injection time was investigated, and the method validation...