For high-throughput production of recombinant protein in Escherichia coli (E. coli), besides important parameters such as efficient vector with strong promoter and compatible host, other important issues including codon usage, rare codons, and GC content specially at N-terminal region should be considered. In the current study, the effect of decreasing the percentage of GC nucleotides and optim...

The purpose of this investigation was to study the intra-oral rehardening of acid-softened enamel and fluoride uptake from SnF2 gel. Bovine enamel slabs were softened with 0.1 mol/L lactate buffer at pH 4.0 for 14 hrs and then mounted in a mandibular removable Hawley appliance. Control slabs were worn for 96 hrs by seven adult males whose teeth were brushed daily with a fluoride-free dentifrice...

This articles is comprised of two parts: a) an experimental investigation on the behavior of an acrylic gel under DC electric field and b) a physico - mathematical description.a) Gel rods made of poly [acrylamide-co-bisacrylamide] were partially hydrolyzed to different extents at pH 12 by teteramethylethylene diamine. Equlibrium properties of the resulting gels rods (water content,...

A new cholesterol-binding protein (CBP) has been purified from rat liver cytosol by ammonium sulfate precipitation, gel filtration and ion exchange chromatography. It appears to be homogeneous by sodium dodecyl sulfate (SDS)-polyacrylamide gel electrophoresis, and, using antiserum to purified CBP, by Ouchterlony double-immunodiffusion analysis, by immunoelectrophoresis, and by SDS gel electroph...

BACKGROUND The optimal cardiac graft for the repair of congenital heart defects will be composed of autologous cells and will grow with the child. The biodegradable material should permit rapid cellular growth and delayed degradation with minimal inflammation. We compared a new material, epsilon-caprolactone-co-L-lactide sponge reinforced with knitted poly-L-lactide fabric (PCLA), to gelatin (G...

A fundamental study of the deposition and aging of a thin incipient wax-oil gel that is formed during the flow of waxy oils in cooled pipes was performed. The solubility of high molecular weight paraffins in naphthenic, aromatic or paraffinic sol®ents is ®ery low and decreases rapidly with decreasing temperature. This property of the paraffins leads to the formation of gels of complex morpholog...

introduction: the purpose of this work was to study the ability of mri normoxic polymer gel dosimetry for evaluating the dose distribution in hdr brachytherapy of esophagial cancer at imam reza brachytherapy center (mashhad, iran). materials and methods: initially, 2liters of normoxic gel (magic) was fabricated and then poured into 12 calibration test tubes and placed in a perspex walled phanto...

to introduce a new rice cultivar with high grain yield and desirable cooking characteristics for the warm regions of kohgilouyeh-ve-boyrahmad province, 203 lines of rice originated form irri breeding program were evaluated in preliminary and advanced yield trials from 1993 to 2000 in choram agricultural research station. in each year, data were recorded from different agronomical and morpho-phy...