Background: Escherichia coli is still the common host for ing and heterologous protein expression. Various strategies have been employed to increase protein expression in E. coli, but, it seems that external factors such as selection marker concentration can drastically aff ect the yield of protein and plasmid.Objectives: Alterations of protein expression...

recent growth and developments in internet and electronic services play a significant role in banking industry all over the world especially in iran. it caused an intensive competition between governmental and non- governmental banks in the field of using e-banking services in a way that each bank attempts to attract more customers using high-quality e-services. ways of delivering services, qua...

E-readiness is one of the major prerequisites for effective implementation of e-government. For the correct implementation of e-government, it is needed to accurately assess the state of e-readiness in desired community. In this regard, there are models to assess, but the correct choice of model is one of the most important challenges in this area. The process of evaluating and selecting the ap...

The aim of livestock breeding plans is to improve an objective of selection by acting on several criteria of selection. The criteria of selection are composed by a subset of traits selected by its easiness of measure and its correlation with the objective of selection. In general, traits included on the criteria of selection are direct measures of the performance of candidates to selection. Fro...

Previous work on the regression discontinuity (RD) design has emphasized identi…cation and estimation of an e¤ect at the selection threshold (discontinuity). Focusing on the so-called “fuzzy”RD design, this paper examines identi…cation and estimation of the average treatment e¤ect (ATE) under various forms of selection bias— selection on the observables, selection on the unobservables, and sele...

Background: In the current study, a hybrid feature selection approach involving filter and wrapper methods is applied to some bioscience databases with various records, attributes and classes; hence, this strategy enjoys the advantages of both methods such as fast execution, generality, and accuracy. The purpose is diagnosing of the disease status and estimating of the patient survival. Method...

This paper compares the relative advantages of two models (a) a two-factor (i.e. source and channel) choice model; and (b) a theory of planned behaviour (TPB)–based acceptance model, developed to explain electronic government (e-government) service adoption. The models were empirically validated in the government-to-citizen (G2C) anti/counter-terrorism (ACT) service domain by a telephone survey...

Spam is an unwanted email that is harmful to communications around the world. Spam leads to a growing problem in a personal email, so it would be essential to detect it. Machine learning is very useful to solve this problem as it shows good results in order to learn all the requisite patterns for classification due to its adaptive existence. Nonetheless, in spam detection, there are a large num...

Previous studies have shown that negative selection of T cells to sheep erythrocytes (SRC) after adoptive transfer to irradiated mice requires a sharing of H-2 determinants between the donor T cells and the selection hosts. This paper examines which part of the H-2 complex controls selection. The results show that, in the case of T cells of the H-2k haplotype, complete selection occurs with don...

in this research multiple-regression analysis with stepwise selection method was employed for investigating the effectof vertical building envelopes solar radiation (evr) on cooling energy consumption (e cooling) in residential sector.the high capacity of solar energy in semi-arid climate (shiraz) can provide a part of buildings required energy. dependson house orientations in two directions of...