Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 27 for “"Applied biology"”.
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Effects of Biological Principles Integration on Achievement and Attitudes of Secondary Agriculture Students
… how well instruction in agriculture and in biology could be integrated in a high school agriculture setting. This purpose was accomplished by testing the effect of the incorporation of biological principles instruction into a problem area in vocational agriculture on student achievement in …
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Towards an intelligent system for biosynthesis: fragment annotation of the building plasmid
… project, we study a new task in computational biology, which is Fragment An- notation of the Building Plasmid. Plasmid, a small circulated DNA, is used extensively in basic and applied biology. Plasmids play a significant role in numerous computational biology experiments, emphasizing the …
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The isolation, identification and detection of Clostridium Difficile
The aim of the study was to determine the feasibility of an enzyme linked immunosorbant assay (ELISA) for detection of Clostridium difficile in broth cultures and faeces, to develop a new selective isolation medium and rapid identification test for Cl.difficile, to investigate the use of SDS-PAGE …
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Study on polypeptides of cyanobacterial photosystem 2
The main objective of this work was to characterize cyanobacterial PS2 polypeptides with particular respect to calcium binding. A number of cyanobacteria were studied by trypsin digestion of their thylakoid membranes which showed that using the same method of preparation some cyanobacteria produce …
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The effect of serum on the hypodynamic frog heart
An investigation was made of the effects of serum and serum fractions on the isolated spontaneously beating frog heart preparation. Initial experiments were performed to develop a sensitive bioassay preparation to test for inotropic agents in serum. The isolated spontaneously beating frog heart was …
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Sex difference in the endocrine response of adult domestic chickens to gonadotrophin-releasing hormone-I
The responsiveness and sensitivity to an injection of chicken [Gln 8]-gonadotrophinreleasing hormone (GnRH-I) is lower, and the duration of increased plasma luteinizing hormone (LH) is more prolonged, in laying hens than in adult cockerels (Callus domesticus). This thesis sought to further …
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Studies on photosystem II in higher plant chloroplasts
… Holzvarth (1986). However, none of the models applied to our data could adequately explain them. The lifetime data from PSI was dominated by a 20 psec component which was not seen when the chloroplast measurements were taken. Thus a lot more work is needed to be dane before energy transfer …
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Secretomotor substances in the rat lacrimal gland: Immunocytochemical functional and ligand binding studies
The rat lacrimal gland has a characteristic pattern of autonomic innervation which has important roles in the control of lacrimation and blood flow. Protein secretion is observed in the presence of cholinergic and adrenergic antagonists, implicating the involvement of a noncholinergic, …
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Photosynthetic adaptations in grasses to abnormal levels of soil cations
… spectra of excised leaves were standardised and applied. The soil conditiens were shovn to have a marked effect on the flucrescence spectra of leaves of barley plants grown in a rccge of soil typcs. The assay of light—induced oxygen evolution from excised leaf segments of the Merlin cultivar of …
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Polymorphism in Hawkmoth caterpillars - an ecological and biochemical study of crypsis in Smerinthus Ocellata (L.) and Laothoe Populi (L.)
Extensive field surveys in Lancashire and Merseyside have shown that for both Smerinthus ocellata (the eyed hawkmoth) and Laothoe populi (the poplar hawkmoth) there is a correlation between larval and foodplant coloration. For L. populi, experiments have shown that foodplant determines the colour …
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Mineral nutrition of micropropagated plants
Aspects of the mineral nutrition of plants in in vitro cultures were studied in Delphinium 'Princess Caroline' and Hosta 'Fladspen Blue', two species with contrasting growth habits. Initially methods for accurately measuring mineral concentrations within gelled culture media using atomic absorption …
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The effects of histamine on the gallbladder and exocrine pancreas of the guinea-pig
In the mammalian gastrointestinal tract histamine has multiple functions including contraction of smooth muscle and secretion of gastric acid. This study investigated the secretory and contractile actions of histamine on the exocrine pancreas and gallbladder of the guinea-pig respectively. …
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The role of Ca2+ in photosystem 2 of anacystis nidulans
It has been previously shown in various studies that Ca 2 have at least two roles in P32, that of regulation (England and Evans, 1983) and that of stabilisation (Barber, 1987). It was decided, during this study, to investigate both roles to a greater extent. Through the extraction of P52 from …
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The neurobiology of parental behaviour of the ring dove (streptopelia risoria)
The ring dove (Streptopelia risoria) expresses a stereotyped breeding cycle and has been used extensively as a laboratory animal model for studies of avian parental behaviour. Studies were undertaken to identify brain regions of the ring dove involved in the exprcssion of these behaviours, and to …
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Calcium and growth hormone secretion in the domestic fowl (Gallus domesticus)
Extracellular calcium is a ubiquitous molecule required for secretagogue induced growth hormone release from somatotroph cells of the chicken anterior pituitary. Growth hormone release can be induced via different intracellular pathways and these in turn can act to produce a synergistic hormone …
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Central mechanisms involved in the reproductive cycle of the ring dove (Streptopelia Risoria)
An immunocytochemical method was employed to localize progesterone receptors in the brain, pituitary and oviduct of incubating, non-incubating and oestrogen (E 2)-treated ring doves. Progesterone receptors were localized in similar regions of the brain in both sexes: the preoptic area (POA), …
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Psychological, cardiovascular and haematological aspects of the type A behaviour pattern in relation to coronary heart disease
The programme of work comprised two maj or aspects of enquiry. Firstly, the work aimed to identify specific situations which promote the Type A coping response. Secondly, the research aimed to investigate the biological mechanisms by which Type A behaviour may be translated into coronary heart …
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Changes in behaviour and prolactin secretion in bantam hens (gallus domesticus) during extended incubation
The function of incubation behaviour in birds is to maintain the eggs at the temperature required for embryo development and hatching. During incubation, single-sex incubators such as the domestic hen, leave their nests each day for a limited number of short periods (recesses) to carry out body …
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Isolation, growth and epidemiology of campylobacter jejuni / coli
A selective blood agar (SBA) and a selective blood enrichment broth (SBEB) containing polymyxin (5,000 iu/l), trimethoprim (10 mg/i), rifampicin (10 mg/l) and cyclohexamide (100 mg/l) have been developed. Results from a comparison with four other media showed that the SBA gave the most isolations …
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