Facial expression has many applications in human-computer interaction. Although feature extraction and selection have been well studied, the specificity of each expression variation is not fully explored in state-of-the-art works. In this work, the problem of multiclass expression recognition is converted into triplet-wise expression recognition. For each expression triplet, a new feature optimi...

Microarray gene expression data play a vital in biological processes, gene regulation and disease mechanism. Biclustering in gene expression data is a subset of the genes indicating consistent patterns under the subset of the conditions. Finding a biclustering is an optimization problem. In recent years, swarm intelligence techniques are popular due to the fact that many real-world problems are...

conclusions full factorial design experimental approach helped to identify the critical culture condition parameters in heterologous expression of v2r. it would allow studying the parameters affecting the function of this protein in future experiments. results the maximum amount of protein production was obtained by the addition of 0.75 mm iptg at 37°c after three hours. the most important fact...

Background: Chlamydomonas reinhardtii is a novel recombinant eukaryotic expression system with many advantages including fast growth rate, rapid scalability, absence of human pathogens and the ability to fold and assemble complex proteins accurately, however, obstacle relatively low expression level necessitates optimizing foreign gene expression in this system. The Green Fluorescent Protein (G...

human interferon β (inf-β) is a member of cytokines family which different studies have shown its immunomodulatory and antiviral activities. in this study an expression vector was designed and constructed for expression of human inf-β-1b either in shake flasks and bench top bioreactor. the designed vector was constructed based upon pet-25b(+) with t7 promoter. recombinant human beta interferon ...

introduction: gene expression and purification of luciferases from the firefly, lampyris turkestanicus, and optimization of cellular atp measurements were performed. methods: cdna encoding luciferases from lampyris turkestanicus was transferred from pqe30 vector into pet28a expression vector and pltu28 was built. newly constructed vector was expressed in e. coli xl1 blue and the recombinant luc...

objective: dna vaccines have been widely used to develop immunity against various pathogens including parasites and viruses. the potential of dna vaccine to induce an effective immune response is related to the expression levels of the encoded protein in eukaryotic cells. therefore, optimization of plasmid dna delivery system is a major concern in protein expression in order to make an efficien...

vicia sativa l., an annual winter growing leguminous plant, is a valuable source of protein and minerals for cattle. drought is one of the key stress factors that influence plant growth and development. in order to investigate common vetch physiological and molecular responses under normal irrigation (n) and two levels of drought stress [s1= 30% and s2= 10% field capacity (fc)], a greenhouse exp...

background:class ii transactivator (ciita) is a dominanttranscriptional element, controlling numerous genes in theimmune system. ciita is expressed in a constitutive pattern inantigen presenting cells although its expression can occur inother cell types. since the revelation of ciita, there have beenconsiderable advances toward understanding its role as anactivator of mhc ii genes in humans and...

in this article, multiple-product pvrp with pickup and delivery that is used widely in goods distribution or other service companies, especially by railways, was introduced. a mathematical formulation was provided for this problem. each product had a set of vehicles which could carry the product and pickup and delivery could simultaneously occur. to solve the problem, two meta-heuristic methods...