the voltammetric behaviour of sulfadoxine (sdn) was studied at a glassy carbon electrode in 0.2 m phosphate buffer solutions using cyclic, differential-pulse (dpv) and square wave voltammetry (swv). the dependence of the current on ph, concentration, and scan rate was investigated to optimize the experimental conditions for the determination of sdn. the oxidation process was shown to be diffusi...

Bacillus subtilis subsp. stercoris [ster’co.ris. L. gen. n. stercoris, of compost, from which the strain was isolated]. Grows optimally at 45 C (range 24–50), pH of 7 (range 5–9), and grew in the presence of 7% NaCl. Facultative anaerobe by fermentation, forms white irregular colonies 1–2 mm in diameter when grown on dTSA, cells are straight rods 4–5 lm length by 1 lm width, and stain Gram posi...

Investigations have been carried out on proteolytic activities of four laticiferous plants, viz. Calotropis procera (Ait.) R. Br. (Ruie), Carica papaya Linn. (Papaya), Euphorbia nivulia Buch.-Ham. (Sabar) and Ficus carica Linn. (Anjir) using Hammerstein grade casein and skimmed milk powder. Ratio of milk clotting to proteolytic activity was highest in the latex sample of C. papaya followed by F...

We report fabrication and characterization of a new hydrogel-based microsensor for wireless chemical monitoring. The basic device structure is a high-sensitivity capacitive pressure sensor coupled to a stimuli-sensitive hydrogel that is confined between a stiff porous membrane and a thin glass diaphragm. As small molecules pass through the porous membrane, the hydrogel swells and deflects the d...

OBJECTIVES This study sought to investigate the prognostic importance of a low diffusion capacity of the lung for carbon monoxide (DLCO) in patients with a catheter-based diagnosis of pulmonary hypertension due to heart failure with preserved ejection fraction (PH-HFpEF). BACKGROUND In patients with pulmonary arterial hypertension, a low DLCO is associated with poor outcome. It is unclear whe...

A novel color control strategy for 3D printing was proposed based on a single channel nozzle with raw material. The basic principle to regulate the pH of extruded line through electrolysis which would result in change pH-sensitive pigments mixed printed materials. Using pulped yam as feedstock and sensitive pigment extracted from purple sweet potato (PPP), process parameters were optimized usin...

Accessing vaginal pH is fundamental during gynaecological visit for the detection of abnormal vaginal flora (AVF), but use of pH strips may be time-consuming and difficult to interpret. The aim of this study was to evaluate the VS-SENSE test (Common Sense Ltd, Caesarea, Israel) as a tool for the diagnosis of AVF and its correlation with abnormal pH and bacterial vaginosis (BV). The study popula...

BACKGROUND Acetobacter sp. CCTCC M209061 could catalyze carbonyl compounds to chiral alcohols following anti-Prelog rule with excellent enantioselectivity. Therefore, the enzymatic characterization of carbonyl reductase (CR) from Acetobacter sp. CCTCC M209061 needs to be investigated. RESULTS A CR from Acetobacter sp. CCTCC M209061 (AcCR) was cloned and expressed in E. coli. AcCR was purified...