nowadays, hydrogels are widely used as wound dressings in biomedical applications. similar to other types of the moist (wet) wound dressings, it is necessary to have sufficient information about their dehydration kinetics during the pre-usage period (e.g. storage duration) and also the wound healing process. in this work, hydrogel wound dressings based on polyvinyl alcohol were prepared by cycl...

     Nowadays, hydrogels are widely used as wound dressings in biomedical applications. Similar to other types of the moist (wet) wound dressings, it is necessary to have sufficient information about their dehydration kinetics during the pre-usage period (e.g. storage duration) and also the wound healing process. In this work, hydrogel wound dressings based on polyvinyl alcohol were prepared by...

The molecular structures and reactivity of surface modified niobium oxide catalysts were determined by Raman spectroscopy, pyridine adsorption as well as the methanol oxidation reaction. Metal oxides (RexO,, CrOx, WOs, Moos, and V206) and acids (phosphate and sulfate) form a surface overlayer on the niobia support, and possess a structure similar to the metal oxide ionic species present in acid...

The authors studied the direct conversion of syngas to light paraffins in a dual-bed fixed-bed reactor. A catalyst composed three catalysts, physically mixed methanol synthesis (CZA), and dehydration dimethyl ether (DME) (Al2O3(C)) were put upper bed for DME, while SAPO-34 (SP34-C) zeolite was lower DME conversion. effects mass ratio CZA Al2O3(C), H2/CO molar ratio, space velocity on catalytic ...

how to cite this article: heydarian f, rezaeian a. relationship between changes in serum sodium level and seizures occurrence in children with hypernatremic dehydration. iran j child neurol. 2013 autumn;7(4): 35- 40.   objective to assess any relationship between serum sodium changes and seizure occurrence in children aged 2 months to 5 years with hypernatremic dehydration.   materials & method...

abstract cerebral sinovenous thrombosis (csvt) in children has rarely been reported in the literature, especially without underlying disorder. it has increasingly been diagnosed due to clinical awareness and sensitive neuroimaging techniques. the aim of this article was to report a case of cerebral sinovenous thrombosis without underlying disorder. we reported a 5 year old girl, presented with ...

The production of dimethyl ether (DME) as compared to methanol from synthesis gas allows for increased conversions in a single pass. A challenge this process is the combination and dehydration functionalities catalyst without mutual negative interference their performances. Here, we studied use hydrated niobium pentoxide (Nb2O5·nH2O) phosphate (NbOPO4) with copper-based direct DME, while gamma-...

BACKGROUND An accurate assessment of the degree of dehydration in infants and children is important for proper decision-making and treatment. This emphasizes the need for laboratory tests to improve the accuracy of clinical assessment of dehydration. The aim of this study was to assess the relationship between clinical and laboratory parameters in the assessment of dehydration. METHODS We eva...