نتایج جستجو برای: addition of aminated polyacrylamide paa
تعداد نتایج: 21168661 فیلتر نتایج به سال:
current studies in second language (l2) learning have revealed the positive role of corrective feedback (cf) in both oral and written forms in different language features. the present study was an attempt to investigate the effect of both direct and indirect written corrective feedback (wcf) on the use of grammatical collocations in l2 writing. the study also sought to examine whether the effec...
The chemical construction of complex colloidosomes consisting of a molecularly crowded polyelectrolyte-enriched interior surrounded by a continuous shell of closely packed silica nanoparticles is studied using optical and fluorescence microscopy, high-resolution X-ray microcomputed tomography, and synchrotron radiation X-ray tomographic microscopy. The colloidosomes are prepared by addition of ...
BACKGROUND It has been hypothesized that the etiology of schizophrenia, in a distinct group of patients, originates from an autoimmune reaction against platelets. Previous open screenings have recorded significantly higher blood titers of platelet-associated autoantibodies (PAA) in schizophrenic patients as compared to normal healthy subjects. In addition, young schizophrenic patients at the ea...
The phytohormone auxin plays a central role in many aspects of plant growth and development. IAA is the most studied natural auxin that possesses the property of polar transport in plants. Phenylacetic acid (PAA) has also been recognized as a natural auxin for >40 years, but its role in plant growth and development remains unclear. In this study, we show that IAA and PAA have overlapping regula...
We report here on the fabrication of porous anodic alumina PAA films from commercially available impure aluminum foil. While the expensive ultrapure PAA films are restricted to potential applications in nanoelectrophotonics, the impure PAA films are more suitable for large-scale applications, such as in catalysis and filtration. The anodization current behavior and chemical composition of the r...
Peracetic acid (PAA) is a highly potent disinfectant, exhibiting an outstandingly broad spectrum of activity against various microorganisms and viruses. Nevertheless, one disadvantage when applying PAA for disinfection purposes the strongly corrosive effect due to its oxidizing properties. The employment nonionic surfactant as corrosion inhibitor was evaluated in addition adjustment pH value so...
the main purpose of the present study was to investigate the relationship between listening proficiency and metacognitive listening strategies awareness among low, mid, and highly self-regulated students. three hundred and seventy one efl students participated in this study (all grade 3 and 4 high-school students who were studying in khansar in academic year 1391-92). to gather the data, three ...
Peroxyacetic acid (PAA) is one of the most important atmospheric organic peroxides, which have received increasing attention for their potential contribution to the oxidation capacity of the troposphere and the formation of secondary aerosols. We report here, for the first time, a series of data for atmospheric PAA concentrations at urban and rural sites, from five field campaigns carried out i...
We have previously identified pancreatic and duodenal homeobox 1 (Pdx1) autoantibodies (PAA) in sera from both non-obese diabetic (NOD) mice and human type 1 diabetic (T1D) patients. A suitable non-radioactive, sensitive and specific assay is needed for large-scale testing to determine the clinical utility of PAA. Here we reported a liquid-phase luciferase immunoprecipitation system (LIPS) assa...
background and objectives : the attempts were made to describe the development of a whole cell immobilization of p. pastoris by entrapping the cells in polyacrylamide gel beads. the alcohol oxidase activity of the whole cell pichia pastoris was evaluated in comparison with yeast biomass production. materials and methods : methylotrophic yeast p. pastoris was obtained from collection of standard...
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