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 72 for “"QH Natural history"”.
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A Phylogenetic History of the Tenerife Skink Chalcides viridanus: A multi-locus Coalescent Approach
… within-island cladogenesis and the geological history of the island. Since these studies there have been many advances in conceptual, numerical and methodological approaches in phylogenetic analyses. This study aims to revisit the phylogeography of the Tenerife skink, using more current *BEAST …
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Uptake of manganese into the exoskeleton of the swimming crab Liocarcinus depurator (L.) in relation to biomonitoring and biosorption
… Loch Fyne in the west coast of Scotland as a naturally high Mn area and the Clyde Sea area as the reference area. The ability of the crushed carapace to remove Mn from aqueous solution in a biosorption column system in the remediation of contaminated waters was also investigated as an attempt …
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Establishment potential of non-native glasshouse biological control agents, with emphasis on 'Typhlodromips montdorensis' (Schicha) (Acari: Phytoseiidae) in the UK
Typhlodromips montdorensis is a non-native predatory mite used for control of red spider mite and thrips, but is not yet licensed for use in the UK. Current legislation requires that non-native glasshouse biological control agents may not be introduced into the UK without a risk assessment of …
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The effects of intensive agriculture on the breeding of the lapwing (Vanellus vanellus L.).
Changes in modem agriculture have been shown to have detrimental affects on those bird species whose populations mainly inhabit the wider countryside. Recently extensive changes to the farmed landscape have occurred through implementation of European agricultural policy much of which has been …
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Duplex camera portable motion capture system for single athlete’s performance analysis
In recent years, introduction of depth camera in motion capture have caught a massive attention by both researchers and biomechanists. Therefore, high-performance sports certainly require motion capture technology to compete with other competitors. Thus, a study involving quantitative analysis is …
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Insecticidal and repellant activities of selected botanical extracts against rice weevil (Sitophilus oryzae L.)
Stored rice is infected primarily by adult rice weevil (Sitophilus oryzae L.). Botanical pesticides could be alternatives to synthetic insecticides due to their effectiveness and lower toxicity. This study investigated repellence activity, insecticidal activity and phytochemical composition of …
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Investigation of porcupine bezoar extract (Hystrix Brachyuran) on hela cell combined with electroporation method
… rate percentage of HeLa cell. For the natural resource compound or extract which is available in Malaysia Porcupine Bezoar (Hystrix Brachyuran) were used. This extract has the potential as an anti-proliferation agent, which is useful in anti-cancer application. The experiment suggests …
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Study of low voltage electroporation technique on hela cell treated with neolamarckia cadamba extracts daing
… of the cell. Neolamarckia Cadamba is a natural source that is widely used in the medical arena due to its pharmacological properties. Neolamarckia Cadamba known as kelempayang to Malaysian people. Its mainly planted in the states of Pahang, Perak, Sabah and Sarawak. Electrochemotherapy …
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Understanding the complexity and dynamics of mangrove social-ecological systems through the use of a resilience approach in Unguja, Zanzibar
There has been growing concern by policy and other decision makers that timber extraction by local communities is the main threat to achieving sustainable management of mangrove systems in Unguja Island, Zanzibar, Tanzania. However, this concern, and responses to the perceived threat to date, do …
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Molecular genetics of 2, 4-dichlorophenoxyacetate (2, 4-D) degradation in pseudomonas cepacia strain 2a
Pseudomonas cepacia strain 2a, which utilises2,4-dichlorophenoxyacetate (2,4-D) as a sole source of carbon and energy, has been shown to contain an 17kbp plasmid, p2,4-D, which has been mapped using BamHI and Asp718. Several mutants of strain 2a unable to grow on 2,4-D were generated by temperature …
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Developing conservation governance strategies: holistic management of protected areas in Nepal
The Buffer Zone (BZ) concept has been introduced in Nepal as a key component of the national biodiversity conservation strategy to mitigate the impacts of protected areas on local communities, and thereby reduce adverse impacts of local people on protected areas. Unlike traditional Buffer Zone …
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A curate's egg: feeding birds during reproduction is 'good in parts'. A study of blue tits Cyanistes caeruleus and great tits Parus major
Food supplementation of birds in gardens is widespread and UK householders have recently been advised to supplement birds throughout the spring and summer. This coincides with reproduction of many avian species and supplementation with specific foods (e.g. live invertebrates) is encouraged to …
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Testing the emotional value of facial stimuli using attention bias in Rhesus Macaques, Macaca mulatta.
Approximately 2000 rhesus macaques, Macaca mulatta, are used annually forbiomedical research in the UK, the psychological wellbeing and welfare of theseprimates is a primary concern. Attention bias is a measure of cognitive bias usedto assess whether an individual is stressed. Current methods using …
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The effect of genotype on attention bias in rhesus macaques, Macaca mulatta, as a welfare indicator.
Rhesus macaques, Macaca mulatta, are one of the most commonly used non-human primates in biomedical research in the UK. Their welfare is of great concern for both ethical and quality-of-science reasons. Attention bias (AB), a measure of cognitive bias, assesses whether an individual is stressed, …
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Development of Alternative Methods to Assess the Toxicity and Bioaccumulation Potential of Chemicals in the Aquatic Environment
The toxicity and bioaccumulation potential of chemicals are properties that need to be assessed in risk assessment. In the context of the aquatic environment, both properties were traditionally evaluated in the whole fish. However, due to the reluctance to use a large number of animals for …
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Polyunsaturated fatty acids and immune cell functions
In MS patients there was a significantly positive relationship between membrane AA and TGF-ß1 indicating that it is the individual long chain (LC) PUFA, i.e. AA that regulate the levels of TGF-ß1. Investigation of the effects of n-6 and n-3 PUFAs on normal healthy PBMC production of TGF-ß1 in vitro …
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Membrane transport studies: novel methods, model systems and thermodynamics
The work in this thesis shows that it is possible to design a diffusion cell which will allow access to the flux and lag time of a permeant without the need for invasive sampling and that this novel cell is both sensitive and reproducible. It was also shown that the cell could be used in …
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