We describe a method for simultaneously measuring concentrations of coproporphyrin, zinc protoporphyrin IX, and protoporphyrin IX in whole blood by liquid chromatography, with use of reversed-phase ion-pair system, fluorometric detection, and internal standardization. Each analysis requires 10 microL of whole blood and 15 min total analysis time. Analytical recovery ranged from 84 to 92%, day-t...

BACKGROUND Pneumonia is a leading cause of morbidity and mortality in children. OBJECTIVE The aim of study was to evaluate the efficacy of Zinc supplementation in treatment of severe pneumonia in hospitalized children. DESIGN/METHODS A double blind randomized, placebo- controlled clinical trial conducted at a tertiary care centre of a teaching hospital. Children with diagnosis of severe pne...

Magnesium, zinc, and chromium are mineral elements required in modest amounts to maintain health and optimal physiologic function. For physically active persons, adequate amounts of these micronutrients are needed in the diet to ensure the capacity for increased energy expenditure and work performance. Most physically active individuals consume diets that provide amounts of magnesium and zinc s...

Due to the difficulty in dispersing some engineered nanomaterials in exposure media, realizing homogeneous distributions of nanoparticles (NP) in soil may pose major challenges. The present study investigated the distribution of zinc oxide (ZnO) NP (30 nm) and non-nano ZnO (200 nm) in natural soil using two different spiking procedures, i.e. as dry powder and as suspension in soil extract. Both...

YGL196W of Saccharomyces cerevisiae encodes a putative protein that is unidentified but is predicted to have a motif similar to that of the N-terminal domain of the bacterial alanine racemase. In the present study we found that YGL196W encodes a novel D-serine dehydratase, which belongs to a different protein family from that of the known bacterial enzyme. The yeast D-serine dehydratase purifie...

Polyacrylamide gel electrophoresis (PAGE), which is widely used to assess protein purity and molecular weight [1], is best combined with a highly sensitive, reproducible, inexpensive, rapid, and easy to perform protein staining/detection method. Coomassie brilliant blue (CBB)1 staining is a popular method, known for its simplicity, economy, and compatibility with downstream analysis but relativ...

Male BALB/c mice were infected with a single cercarial dose of Schistosoma mansoni and later treated curatively with praziquantel on Day 42 post-infection. Serum from the animals was studied for changes in concentration of haptoglobin, albumin, iron, zinc and copper. The infection resulted in significant decreases in serum albumin, iron and zinc, and increases in serum haptoglobin and copper. H...

The first section of this chapter describes general pollution prevention techniques for plating solutions and covers housekeeping, monitoring, additives, equipment modification, and on-site recycling and recovery. The next section covers general issues in pollution prevention for cyanide-based plating. The next seven sections cover pollution prevention options for plating specific metals such a...

As the depletion of zinc sulfide ores becomes more severe, investigations into recovery from oxide have aroused interest. In this regard, acid-based hydrometallurgical treatment strategies had great effectiveness. However, they are inadequate for low-grade ores. study, we examined alkaline gossan that bear zinc, such as siderite and limonite. Additionally, particular note, effects a leaching ag...