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(Results) p LJ1, a transferable plasmid that was present in 86 % of the extended-spectrum b-lactamase producing collection, was found to harbour an integron carrying aad B, a gene cassette for gentamicin, kanamycin and tobramycin resistance and a bla SHV-12 gene for third generation cephalosporin resistance.(Justification of results) The presence of this plasmid accounts for the gentamicin resistance phenotype that is often associated with organisms displaying an extended-spectrum b-lactamase phenotype.(Jones 2004, p.9)Abstract(Background statement) A review of groundwater remediation in use today shows that new techniques are required that solve the problems of pump and treat, containment and in-situ treatment.
(Narrowing statement) One such technique is the method that involves the use of permeable treatment walls.
(Elaboration) These methods use a reactive medium such as iron to remediate contaminated groundwater.
These pages show two examples of typical abstracts from honours theses.
Notice that the stages of the abstracts have been labelled, so that you can see the function of each sentence or part-sentence.
(Aims) The aims of this study were to screen clinical isolates for integrons, characterise gene cassettes and extended spectrum b-lactamase (ESBL) genes.
(Extended aim) Subsequent to this, genetic linkage between ESBL genes and gentamicin resistance was investigated.(Evaluation of results) A sensitivity analysis has been conducted that shows that increasing the size of the capture zone decreases the residence time (Limitations) which will limit the design.(Future applications and research) The results of the modelling and sensitivity analysis are presented such that they can be used as an aid to the design of permeable treatment walls.(Dasey G.You should view it as an opportunity to set accurate expectations.An abstract often functions, together with the thesis title, as a stand-alone text.(Results) In this study, 41 % of multiple antibiotic resistant bacteria and 79 % of extended-spectrum b-lactamase producing organisms were found to carry either one or two integrons, as detected by PCR.(Results) A novel gene cassette contained within an integron was identified from Stenotrophomonas maltophilia, encoding a protein that belongs to the small multidrug resistance (SMR) family of transporters.Abstracts appear, absent the full text of the thesis, in bibliographic indexes such as Psyc Info.They may also be presented in announcements of the thesis examination.(Results) The results showed that increasing the wall length, gate length and permeability increases the size of the plume captured.(Key result) An important factor in designing the walls is the residence time of the water in the gate or the contact time of the contaminant with the reactive media.