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Full-Text Articles in Social and Behavioral Sciences
Schema Construction Among Pre-Service Teachers And The Use Of It In Mathematics Teaching: A Case Study, Mohan Chinnappan
Schema Construction Among Pre-Service Teachers And The Use Of It In Mathematics Teaching: A Case Study, Mohan Chinnappan
Faculty of Social Sciences - Papers (Archive)
Recent developments about cognitions underlying mathematical learning are beginning to suggest that the activation and appropriate use of prior knowledge by students is, to a large measure, controlled by the quality of organisation of that knowledge. Thus, teaching needs to support the construction of well-connected mathematical knowledge. An important assumption here is that teachers need to construct a repertoire of subject-matter knowledge that is rich and well connected before they can help their students build similar mathematical knowledge. Thus, mathematics knowledge building is an important issue in teacher preparation programs. This paper reports on a study about the knowledge state …
Stx1c Is The Most Common Shiga Toxin 1 Subtype Among Shiga Toxin-Producing Escherichia Coli Isolates From Sheep But Not Among Isolates From Cattle, Kim Brett, Vidiya Ramachandran, Michael A Hornitzky, Karl A Bettelheim, Mark J. Walker, Steven P. Djordjevic
Stx1c Is The Most Common Shiga Toxin 1 Subtype Among Shiga Toxin-Producing Escherichia Coli Isolates From Sheep But Not Among Isolates From Cattle, Kim Brett, Vidiya Ramachandran, Michael A Hornitzky, Karl A Bettelheim, Mark J. Walker, Steven P. Djordjevic
Faculty of Science, Medicine and Health - Papers: part A
Unlike Shiga toxin 2 (stx2) genes, most nucleotide sequences of Shiga toxin 1 (stx1) genes from Shiga toxin-producing Escherichia coli (STEC), Shigella dysenteriae, and several bacteriophages (H19B, 933J, and H30) are highly conserved. Consequently, there has been little incentive to investigate variants of stx1 among STEC isolates derived from human or animal sources. However stx1OX3, originally identified in an OX3:H8 isolate from a healthy sheep in Germany, differs from other stx1 subtypes by 43 nucleotides, resulting in changes to 12 amino acid residues, and has been renamed stx1c …
Distribution Of Intimin Subtypes Among Escherichia Coli Isolates From Ruminant And Human Sources, Vidiya Ramachandran, Kim Brett, Michael A Hornitzky, Mark Dowton, Karl A Bettelheim, Mark J. Walker, Steven P. Djordjevic
Distribution Of Intimin Subtypes Among Escherichia Coli Isolates From Ruminant And Human Sources, Vidiya Ramachandran, Kim Brett, Michael A Hornitzky, Mark Dowton, Karl A Bettelheim, Mark J. Walker, Steven P. Djordjevic
Faculty of Science, Medicine and Health - Papers: part A
The intimin gene eae, located within the locus of enterocyte effacement pathogenicity island, distinguishes enteropathogenic Escherichia coli (EPEC) and some Shiga toxin-producing E. coli (STEC) strains from all other pathotypes of diarrheagenic E. coli. EPEC is a leading cause of infantile diarrhea in developing countries, and intimin-positive STEC isolates are typically associated with life-threatening diseases such as hemolytic-uremic syndrome and hemorrhagic colitis. Here we describe the development of a PCR-restriction fragment length polymorphism (RFLP) assay that reliably differentiates all 11 known intimin types (α1, α2, β, γ, κ, ɛ, η, ι, λ, θ, and ζ) and three new …