We report the complete DNA sequence of the Escherichia coli elt A gene, which codes for the A subunit of the heat-labile enterotoxin, LT. The amino acid sequence of the LT A subunit has been deduced from the DNA sequence of elt A. The LT A subunit starts with methionine, ends with leucine, and comprises 264 amino acids. The computed molecular weight of LT A is 29,673. The A subunit of cho...

In the scope of the evaluation of architecture and technologies for the control system of the E-ELT (European-Extremely Large Telescope) instruments, a collaboration has been set up between the Instrumentation and Control Group of the INAF-OATs and the ESO Directorate of Engineering. The first result of this collaboration is the design and implementation of a prototype of a small but representa...

The purpose of this study was to develop novel experimental (Exp) vinyl polysiloxane (VPS) impression materials (ab initio) and evaluate their reproduction fine details compatibility with pouring materials. Exp were compared three commercial VPSs (Aquasil Ultra Monophase (Aq M), Extrude Medium-Bodied (Extr Elite HD (Elt M)) under dry, moist wet conditions. Five (Exp-I–V) developed, out which Ex...

Materials evaluation studies have constantly demonstrated that there is no one fixed procedure for conducting textbook evaluation studies. Instead, the criteria must be selected according to the needs and objectives of the context in which evaluation takes place. The speaking skill as part of the communicative competence has been emphasized as an important objective in language teaching. The pr...

Aim In the present study, we investigated the prevalence of E. coli pathotypes and Shigella sero-groups and their antimicrobial profiles among diarrheic children in Nairobi city, Kenya. Background Although diarrheagenic E. coli pathotypes and Shigella sero-groups are leading causes of diarrhea in children under five years in developing countries, their distribution and antimicrobial resistanc...

Exposure to early life trauma (ELT) is known to have a profound impact on mental development, leading to a higher risk for depression and anxiety. Our aim was to use multiple structural imaging methods to systematically investigate how traumatic stressors early in life impact the emotional brain circuits, typically found impaired with clinical diagnosis of depression and anxiety, across the lif...

Postembryonic development in Caenorhabditis elegans is a powerful model for the study of the temporal regulation of development and for the roles of microRNAs in controlling gene expression. Stable switch-like changes in gene expression occur during development as stage-specific microRNAs are expressed and subsequently down-regulate other stage-specific factors, driving developmental progressio...

This study aims at investigating the challenges of conducting qualitative research (QLR) from Iranian ELT (English Language Teaching) Ph.D. students’ and ELT faculty members’ viewpoints in the Iranian higher education context. The participants of the study consisted of 100 Ph.D. students majoring in ELT and 50 ELT faculty members. The study followed a mixed-method appro...

This paper reviews current critiques of Kolb’s experiential learning theory. Critiques converge on the belief that the theory places undo emphasis on the role of individual experience at the expense of social, political, and cultural elements of learning. This paper suggests that such critiques are based on a limited, selective, or simplistic reading of the initial theory. The theoretical relat...