نتایج جستجو برای: and carboxymethyl cellulose cmc at three concentrations of 01
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this research is aimed at the effect of carboxymethyl cellulose(cmc) on the mechanical properties of paper made from virgin pulp in paper. in this work, cmc was added to pulp furnished in 0%, 0.5%, 1%, and 1.5% dosages. also pulp fibers of furnishes (60hw:40sw) formed by mixing bleached softwood and bleached hardwood pulps were prepared from russia factory. then the 80-gram handsheets were prep...
126 abstract: in this research we studied the effects of cyclic hydration and dehydration of cysts of artemia urmiana and artemia parthenogenetica on the hatching percentage, survival and growth. the experiment was carried out in 3 treatments (1-3 hydration/dehydration cycles) with 3 replicates for each treatment. later effects of cold preservation at -20°c during three time periods were ...
Background & Aim: Since the mutant Hbs do not have any obvious electrical charge, globin chain separation is helpful for the diagnosis ofunknown Hbs. Therefore, the present study was carried out to detect alpha or beta chain variants by cation exchangechromatography.There are several point mutations in hemoglobin(Hb) genes which can cause hemoglobinopathy.Material and Method: count(CBC), HbA2 a...
Microbulbifer strain CMC-5 produces agarase, alginate lyase, xylanase, carboxymethyl cellulase and carrageenase. The extracellular production of the above carbohydrases was investigated by growing Microbulbifer strain CMC-5 in a sea water based medium containing homologous/heterologous polysaccharides as a single substrate or as a combination of mixed assorted substrate. Presence of singular ho...
recent years have witnessed an increased attention to form focused instruction and consciousness raising activities (ellis, 2002; doughty & williams, 1998) on the one hand and extensive and meaningful exposure to the target language (klapper & rees, 2003; day & bamford, 1998) on the other. due to significance attributed to above mentioned issues by scholars, this study attempted to bridge them ...
the purpose of the present study was to see which one of the two instruction-processing instruction (pi) and meaningful output based instruction (mobi) accompanied with prompt and recast- is more effective on efl learners’ writing accuracy. in order to homogenize the participants in term of language proficiency a preliminary english test (pet) was administrated between 74 intermediate students ...
Carboxymethyl cellulose, a water-soluble cellulose derivative, has been used extensively as a biomaterial for wound healing and pharmacological applications. It is a biocompatible and biodegradable polymer but its poor stability, limits its long-term application. In this study, carboxymethyl cellulose scaffolds were prepared at different concentrations (2.5 wt% and 5.0 wt%) by freeze drying met...
The purpose of the present study was to evaluate carboxymethyl cellulose (CMC) coated polypropylene (PP) films containing Zataria multiflora (ZEO) essential oils (4%) as an antimicrobial packaging for chicken breast stored at 4 °C. To increase PP film hydrophilicity, it was treated by atmospheric cold plasma prior to coating by CMC. Then, different films including PP, PP/CMC, PP/CMC containing ...
the concepts of similarity and dissimilarity have been the interest of many researchers. basically, in the studies the similarity between two objects or phenomena, has been discussed. in this thesis, we consider the case when the resemblance or similarity among three objects or phenomena of a set, 3-similarity in our terminology, is desired. later we will extend our definitions and propos...
abstract over the past two decades, applied linguists and language teachers have shown a great deal of interest in genre-centered approaches , mainly because of pedagogic concerns . this has been due to the need to help non-native readers enhance their ability to understand academic and scientific texts. following swales’ (1981) works on genre analysis, studies of different sections of resear...
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