We performed multifractal analysis of fetal heart rate (FHR) variability in fetuses with and without acidosis during labor. Multifractal analysis was performed on fetal electrocardiograms in 10-minute sliding windows within the last 2 hours before delivery in 45 term fetuses divided in three groups according to umbilical arterial pH and FHR pattern: group A had pH ≥7.30 and normal FHR, group B ...

Rhbg is a membrane glycoprotein that is involved in NH(3)/NH(4)(+) transport. Several models have been proposed to describe Rhbg, including an electroneutral NH(4)(+)/H(+) exchanger, a uniporter, an NH(4)(+) channel, or even a gas channel. In this study, we characterized the pH sensitivity of Rhbg expressed in Xenopus oocytes. We used two-electrode voltage clamp and ion-selective microelectrode...

OBJECTIVES Evaluate erosive potential of beverages, using exposure times from 3 to 30 min, and to analyse the relationship between erosion and several drink parameters. METHODS pH, calcium, phosphate and fluoride concentration, saturation, titratable-acidity to pH 5.5 and the viscosity of sixteen beverages were measured or calculated. Enamel samples (N = 90) were serially exposed to 1 ml of t...

RŮŽIČKOVÁ J., ŠUSTOVÁ K. (2006): Determination of selected parameters of quality of the dairy products by NIR spectroscopy. Czech J. Food Sci., 24: 255–260. The possibility of the application of near-infrared spectroscopy to the analysis of the selected parameters of quality of the dairy products was followed. The contents of solids and fat, as well as pH in yoghurts (also the titrable acidity)...

1. Acetylated chymotrypsinogen was prepared by the reaction of crystallized chymotrypsinogen with acetic anhydride at pH 6.7 and 4O, and purification of the product. End group analysis and Van Slyke amino nitrogen determination indicated that all the free Eand or-amino groups of the chymotrypsinogen molecule had been blocked by acetylation. 2. Activation of acetylated chymotrypsinogen by trypsi...

The problems of fish and plant cultivation are limited land, decreasing quality quantity water for human needs, food sources, increasing population on earth. Optimization farming with high stocking densities accompanied by feeding will cause accumulation organic matter in the culture containers which worsen rearing ultimately have an impact physiological conditions, survival growth fish. One te...

The development of in vitro digestion models relies on the availability of in vivo data such as digestive enzyme levels and pH values recorded in the course of meal digestion. The variations of these parameters along the GI tract are important for designing dynamic digestion models but also static models for which the choice of representative conditions of the gastric and intestinal conditions ...

Water samples were collected from river Pandu at six stations where human and animal activities were high. Composite samples were analyzed for dissolved oxygen (DO), biochemical oxygen demand (BOD), chemical oxygen demand (COD) , pH values during dry and wet seasons as well as the harmattan period. The total data points were used to establish relationships between the parameters and data were a...

Lithiation of the bis(pyrazolyl)methanes H2C(PzAd,Me)2 (1 a) and H2C(PzPh,Ph)2 b) subsequent addition N,N’-diisopropylcarbodiimide in THF yields [(thf)Li{(PzAd,Me)2HC−C(=NiPr)(NiPr)}] (2 [(thf)Li{(PzPh,Ph)2HC−C(=NiPr)(NiPr)}] b). For comparison reasons, structure [(thf)Li{(PztBu,tBu)2HC−C(=NCy)(NCy)}] (I) has been determined as well. Protolysis with aqueous ammonium chloride solution gives (PzA...