Relevant bibliographies by topics / Agricultural and Biological Sciences / Dissertations / Theses
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Dissertations / Theses on the topic 'Agricultural and Biological Sciences'

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Published: 3 June 2025
Last updated: 31 July 2025

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1

Carlin, Graham Richard. "The fabrication of biodegradable nanospheres from novel hydroxyalkanoates for the delivery of actives of pharmaceutical and agricultural interest." Thesis, Aston University, 2001. http://publications.aston.ac.uk/11010/.

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This work describes the fabrication of nanospheres from a range of novel polyhydroxyalkanoates supplied by Monsanto, St Louis, Missouri, USA for the delivery of selected actives of both pharmaceutical and agricultural interest. Initial evaluation of established microsphere and nanosphere fabrication techniques resulted in the adoption and optimisation of a double sonication solvent evaporation method involving the synperonic surfactant F68. Nanospheres could be consistently generated with this method. Studies on the incorporation and release of the surrogate protein Bovine Serum Albumin V demo
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2

Duffy, Margaret R. "Determining the biological turnover rate of phosphate in agricultural soils using stable oxygen isotopes." Bowling Green State University / OhioLINK, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=bgsu1593864445251739.

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3

Law, Audrey. "EVALUATING THE EFFECTS OF ORGANIC AND CONVENTIONAL INPUTS ON SOIL CHEMICAL AND BIOLOGICAL PROPERTIES IN A FOUR-YEAR VEGETABLE ROTATION AND THE INVESTIGATION OF SOIL MICROBIAL PROPERTIES ON PLANT GENE EXPRESSION." UKnowledge, 2009. http://uknowledge.uky.edu/gradschool_diss/704.

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The objective of this research was to determine the effects of conventional inputs on soil chemical and biological properties compared to organic systems in a four year vegetable rotation. Tillage and cover crops were the same in all treatments to avoid confounding factors often present in similar research. Additional experiments investigated plant gene expression in organic and conventional management systems and in soils with decreased microbial diversity. Experimental plots were prepared in the spring of 2004; four replications of three management treatments, organic, low-input and conventi
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4

Thompson, Iris Lee. "Agricultural Systems in Babati : Zea mays and its alternatives." Thesis, Södertörn University College, School of Life Sciences, 2009. http://urn.kb.se/resolve?urn=urn:nbn:se:sh:diva-2660.

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<p>This paper aims to give an understanding on the aspects that influences the choice of cropsand agricultural methods in Babati, Tanzania. Drought is a reoccurring problem in this part ofTanzania, which affects a majority of the towns’ farmers. This fact is likely to affect thechoice of crop as well as the limitations when it comes to the choices in cultivation. But thechoice itself has implications on its surrounding and can be affected by the surrounding. Tounderstand the circumstances, a wider picture will be depicted and an evaluation of thegeography of Babati and on its climate condition
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5

Filling, Julia. "Human Urine : can it be applied as fertilizer in agricultural systems?" Thesis, Högskolan Kristianstad, Fakulteten för naturvetenskap, 2018. http://urn.kb.se/resolve?urn=urn:nbn:se:hkr:diva-18029.

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In cities today, vast amounts of nutrients are being wasted. Improvement in nutrient management within agriculture can contribute to a more sustainable society. Reusing nutrients in agriculture could aid in creating a more circular system, where organic fertilizers can be used instead of chemical fertilizers. Urine is a liquid which has a high nutrient content. According to the Swedish environmental protection agency, human urine can replace mineral fertilizers, by using methods such as source separation, where urine is divided from faeces. This is a cheap, effective and sustainable fertilizer
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6

Walker, Rhonda. "Bacterial Interactions of Inoculated Price's Potato Bean (APIOS PRICEANA): A Biological Study." TopSCHOLAR®, 2011. http://digitalcommons.wku.edu/theses/1124.

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Apios priceana is a native endangered species plant found in the Southeast United States. It is characterized as a leguminous species that bears wisteria like clusters with pea like flowers, a large tuberous root and four to six inch long seed pods. It is believed the Native Americans and early European settlers relied on this species as a source of protein and utilized the seeds for cultivation of the tuberous “potato” which formed. Apios priceana contains an average of 13% fiber, 6.9% protein, 71% carbohydrate and 9 of the 11 essential amino acids needed in human diets (Walter et al.,1986).
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Scurich, Justin J. "STRAWBERRY GROWTH, YIELD, FRUIT NUTRITION, AND CONTROL OF VERTICILLIUM WILT WITH PRE-PLANT SOIL FUMIGANTS, OZONE, AND BIOLOGICAL CONTROL." DigitalCommons@CalPoly, 2012. https://digitalcommons.calpoly.edu/theses/714.

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Verticillium wilt is a widespread soilborne disease of strawberry historically controlled by soil fumigation with methyl bromide (MB). MB was banned by the United Nations in 1995 and will be completely phased out by 2015. Research has concentrated on alternative methods of disease control without finding a single alternative able to replace MB in widespread disease control and yield increase. For the current study, strawberries were greenhouse grown in container pots filled with soil from both infested and non-infested areas of a commercial strawberry field in Watsonville, CA. Treatments i
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8

Ham, Brian. "Using Conservative and Biological Tracers to Better Understand the Transport of Agricultural Contaminants from Soil Water through the Epikarstic Zone." TopSCHOLAR®, 2009. http://digitalcommons.wku.edu/theses/133.

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Agriculture contamination is very common in karst systems due to the vulnerability of these aquifers. Animal waste is often spread across crop land to enrich the soil with nitrates and phosphates. Herbicides and pesticides are also applied to the crops. The transport of these pollutants through the soil and epikarst is a difficult process to monitor due to the complex, heterogeneous behavior of the groundwater as it makes its way down to the aquifer below. An experimental site at Crumps Cave lended a unique opportunity to monitor the vadose zone at a waterfall in the cave below. A previous
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9

Birgand, François. "Quantification and Modeling of In-Stream Processes in Agricultural canals of the lower coastal plain." NCSU, 2000. http://www.lib.ncsu.edu/theses/available/etd-20000807-154716.

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<p>BIRGAND, FRANÇOIS. Quantification and Modeling of In-Stream Processes in Agricultural Canals of the Lower Coastal Plain. (Under the direction of Dr. R. Wayne Skaggs).Excess nutrient loads have been recognized to be the major cause of serious water quality problems recently encountered in the North Carolina estuaries and coastal waters. There has been a particular concern in coastal watersheds because agricultural and forested lands are located in close proximity to recreational and environmentally sensitive waters. The key to nutrient management at the watershed scale is the understanding a
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10

Kilaru, Aruna. "Phosphate Replacement System – A Sustainable Agriculture Approach." Digital Commons @ East Tennessee State University, 2016. https://dc.etsu.edu/etsu-works/4766.

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11

Jamrozy, Dorota M. "Genotypic and phenotypic analysis for the typing and characterisation of veterinary and human isolates of Staphylococcus aureus." Thesis, Kingston University, 2013. http://eprints.kingston.ac.uk/28790/.

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Staphylococcus aureus is a member of the skin commensal flora in humans and other mammals, as well as a recognised pathogen. Treatment of S. aureus infections have been complicated by the emergence of antimicrobial-resistant isolates, most notably the methicillin-resistant S. aureus (MRSA). This organism is a significant hospital-acquired pathogen, with community-acquired infections presently on the rise. Recently, MRSA has emerged in livestock, with isolates commonly identified as clonal complex 398 (CC398). The sudden emergence and dissemination of MRSA CC398 poses questions concerning the m
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12

Mousset, Emmanuel, and Emmanuel Mousset. "Integrated processes for removal of persistent organic pollutants : soil washing and electrochemical advanced oxidation processes combined to a possible biological post-treatment." Phd thesis, Université Paris-Est, 2013. http://tel.archives-ouvertes.fr/tel-00976552.

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Soils contaminated by hydrophobic organic pollutants like polycyclic aromatic hydrocarbons (PAHs) are a common concern since they are extremely difficult to remove and their potential toxicological impacts are significant. As an alternative to traditional thermal or physical treatments, soil washing and soil flushing processes appear to be conceivable and efficient approaches, especially for higher level of pollution. However, the treatment of highly loaded soil washing/flushing solutions is another challenge to overcome. In that way, a new integrated approach is suggested: soil washing/flushi
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13

Michua, Cedillo Jeny. "Efecto de Beauveria bassiana y Metarhizium anisopliae como biocontroladores del barrenador de las ramas del aguacatero (Copturus aguacatae Kissinger)." Tesis de Licenciatura, Universidad Autónoma del Estado de México, 2011. http://hdl.handle.net/20.500.11799/65295.

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El umbral económico de Copturus aguacatae Kissinger no esta adecuadamente determinado para el estado de México. Para determinar el grado de infestación de dicha plaga, a partir del mes de febrero de 2010 se realizaron 16 muestreos en una huerta de aguacate 'Hass' en la localidad de San Sebastián, municipio de Malinalco. Además se buscó observar la eficiencia de los hongos entomopatógenos Metarhizium anisopliae y Beauveria bassiana como biocontroladores del insecto en estudio. Se determinó el número de instares de los que consta el ciclo biológico del insecto y la duración de cada uno de estos.
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Wanjura, John David. "A science based emission factor for particulate matter emitted from cotton harvesting." [College Station, Tex. : Texas A&M University, 2008. http://hdl.handle.net/1969.1/ETD-TAMU-2650.

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15

Dibenedetto, Silvia. "Direct activation of endogenous Calcineurin A : biological impact of selective peptide aptamers." Phd thesis, Ecole normale supérieure de lyon - ENS LYON, 2011. http://tel.archives-ouvertes.fr/tel-00757018.

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Therapeutic approaches leading to the stimulation of regeneration, and/or inhibition of degeneration processes in neuromuscular disorders are believed to offer valid therapeutic strategies that would preserve muscle tone and contribute to the quality of life while lengthening patient life span. Activation of CalcineurinA (CnA), a threonine-serine phosphatase, controls gene regulatory programs in skeletal muscle by stimulating slow muscle fiber (type I) gene expression. This phosphatase has been also identified as a key mediator in the hypertrophic response and in skeletal muscle regeneration.
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16

Widodo. "The Effects of Spacings & Cultivars on Biological Yields, Yields, Component of Yield & Harvest Index of Green Bush Snap Bean (Phaseolus vulgaris L.)." TopSCHOLAR®, 1989. https://digitalcommons.wku.edu/theses/2967.

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The effects of cultivars and plant spacings on biological yield, seed yield, seeds per pod, average seed weight, and harvest index of beans (Phaseolus vulgaris L.) were studied in 1987 and 1988. Two cultivars, 'Blue Lake 27' and 'Kentucky Wonder 125' and four plant spacings -- 7, 14, 21, and 28 cm, constituted eight treatments that were arranged in a split-plot with four replications. Each experimental unit or hill consisted of five plants -- four in the corners and one in the center of a square. Spacings treatment were established by varying the distance between the center plant and the four
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17

Lloyd, Davidson A. "The effect of forest to pasture conversion on soil biological diversity and function." Diss., Lincoln University, 2008. http://hdl.handle.net/10182/711.

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Recent declines in returns from primary forest products in New Zealand and projected increases in world food prices have led to the land-use conversion from plantation forest to pastoral farming in many lowland areas. After decades of forest cover the soils are in many cases less than adequate for pastoral farming, as they are acidic, with toxic levels of exchangeable aluminum, and contain low levels of available nitrogen (N), very high carbon (C):N ratio, and are devoid of earthworms and structural integrity. Overcoming the major site limitations of low soil pH and available N was a major pri
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18

Aravena, Duarte Andrés Octavio. "Probabilistic and constraint based modelling to determine regulation events from heterogeneous biological data." Phd thesis, Université Rennes 1, 2013. http://tel.archives-ouvertes.fr/tel-00988255.

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This thesis proposes a method to build realistic causal regulatory networks hat has lower false positive rate than traditional methods. The first contribution of this thesis is to integrate heterogeneous information from two types of network predictions to determine a causal explanation of the observed gene co-expression. The second contribution is to model this integration as a combinatorial optimization problem. We demonstrate that this problem belongs to the NP-hard complexity class. The third contribution is the proposition of a heuristic approach to have an approximate solution in a pract
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19

Orre, G. U. S. "'Attract and reward' : combining a floral resource subsidy with a herbivore-induced plant volatile to enhance conservation biological control." Diss., Lincoln University, 2009. http://hdl.handle.net/10182/1429.

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Experiments were conducted to assess whether a concept termed 'attract and reward' (A&R) could enhance conservation biological control (CBC). In A&R, a synthetically-produced herbivore induced plant volatile (HIPV) ('attract') is combined with a floral resource ('reward'). It is anticipated that the two will work synergistically attracting natural enemies into the crop ('attract') and maintaining them within the crop ('reward'). The study system consists of brassica, the most commonly occurring brassica herbivores, their natural enemies and higher order natural enemies. The HIPV deployed is me
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20

Diarrassouba, Fatoumata. "Interactions between ß-lactoglobulin and nutraceutical ligands riboflavin, vitamin D3 and lysozyme Formation, physico-chemical and biological characterization of functional delivery scaffolds." Thesis, Université Laval, 2013. http://www.theses.ulaval.ca/2013/30500/30500.pdf.

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La protéine majeure du lactosérum, la β-lactoglobuline (βlg) est bien reconnue pour ses propriétés structurales intéressantes lui permettant d’établir des interactions avec des ligands de taille et de caractéristiques différentes. La riboflavine (RF) et la vitamine D3 (D3) ont été sélectionnées comme modèles de petits nutraceutiques amphiphiles et hydrophobes, respectivement, et le lysozyme (Lyso), comme ligand protéique de plus grande taille. La capacité de la βlg à lier la RF a été étudiée par des méthodes spectroscopiques. La βlg et la RF forment le complexe βlg-RF dont la photoactivation g
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21

Stark, Christine H. "Effects of long- and short-term crop management on soil biological properties and nitrogen dynamics." Lincoln University, 2005. http://hdl.handle.net/10182/30.

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To date, there has been little research into the role of microbial community structure in the functioning of the soil ecosystem and on the links between microbial biomass size, microbial activity and key soil processes that drive nutrient availability. The maintenance of structural and functional diversity of the soil microbial community is essential to ensure the sustainability of agricultural production systems. Soils of the same type with similar fertility that had been under long-term organic and conventional crop management in Canterbury, New Zealand, were selected to investigate relation
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Mairs, Ryan Alan. "Effects of Bacillus Mycoides Supplement in a Reduced Frequency Fungicide Program on Chambourcin Grapevines (Vitis Vinifera L.)." TopSCHOLAR®, 2018. https://digitalcommons.wku.edu/theses/3047.

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Fungal diseases pose significant challenges for grapevine producers in Kentucky due to the region’s abundant moisture and relative humidity. Methods to reduce fungicide application frequency would prove both economically and temporally valuable to producers. A field experiment was established in Bowling Green, KY in 2017 to investigate Bacillus mycoides isolate J (LifeGard) as a supplement to a fungicide program for systemic acquired resistance (SAR). Three fungicide treatment regimens were implemented consisting of a program modelled from the Midwest Fruit Pest Management Guide (2017) and an
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Laubertie, Elsa. "The role of resource subsidies in enhancing biological control of aphids by hoverflies (Diptera: Syrphidae)." Diss., Lincoln University, 2007. http://hdl.handle.net/10182/984.

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In this thesis, experiments were conducted in the laboratory and the field to determine whether the provision of floral resources to hoverflies could enhance the biological control of aphids. The overall aim was to clarify hoverfly behaviour and ecology in an agroecosystem in order to understand the potential of these insects for biocontrol under a conservation biological control (CBC) regime. A preliminary experiment in New Zealand compared the effect of different coloured water-traps on catches of the hoverflies Melanostoma fasciatum (Macquart) and Melangyna novaezelandiae (Macquart). Signif
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Fisher, P. M. "Residual concentrations and persistence of the anticoagulant rodenticides brodifacoum and diphacinone in fauna." Lincoln University, 2009. http://hdl.handle.net/10182/930.

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Brodifacoum is a highly effective anticoagulant rodenticide that presents a secondary hazard to some non-target wildlife. The high acute toxicity of brodifacoum to mammals and birds, and its prolonged persistence in liver predicates secondary risk to predators and scavengers of poisoned rodents. Hence there is a need to improve ability to monitor and predict hazards of brodifacoum to non-targets, and optimise use patterns accordingly. Use of a less persistent anticoagulant rodenticide, diphacinone, is an alternative approach currently under investigation in New Zealand. This thesis describes a
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Bloomberg, Mark. "Modelling germination and early seedling growth of radiata pine." Lincoln University, 2008. http://hdl.handle.net/10182/681.

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Background: This study seeks to model aspects of the regeneration of radiata pine (Pinus radiata D.Don) seedlings under a range of environmental conditions. This study investigated whether “hybrid” mechanistic models, which predict plant growth and development using empirical representations of plant physiological responses to the environment, could provide a realistic alternative to conventional empirical regeneration models. Objectives: The objectives of this study were to 1) identify the functional relationships between the environmental conditions controlling germination, establishmen
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Murray, Tara J. "Effect of physiological and behavioural characteristics of parasitoids on host specificity testing outcomes and the biological control of Paropsis charybdis." Lincoln University, 2010. http://hdl.handle.net/10182/1558.

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An established host-parasitoid-hyperparasitoid system was used to investigate how the physiological and behavioural characteristics of parasitoids influence the outcomes of laboratory-based host specificity tests. The characteristics of the two pteromalid egg parasitoids, Enoggera nassaui (Girault) and Neopolycystus insectifurax Girault, were assessed and interpreted in regard to the particular host specificity testing methods used and the control of the eucalypt defoliating beetle Paropsis charybdis Stål (Chrysomelidae) in New Zealand. The physiology of N. insectifurax was examined to determ
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Robinson, K. A. "Use of floral resources by the lacewing Micromus tasmaniae and its parasitoid Anacharis zealandica, and the consequences for biological control by M. tasmaniae." Diss., Lincoln University, 2009. http://hdl.handle.net/10182/823.

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Arthropod species that have the potential to damage crops are food resources for communities of predators and parasitoids. From an agronomic perspective these species are pests and biocontrol agents respectively, and the relationships between them can be important determinants of crop yield and quality. The impact of biocontrol agents on pest populations may depend on the availability of other food resources in the agroecosystem. A scarcity of such resources may limit biological control and altering agroecosystem management to alleviate this limitation could contribute to pest management. This
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Sheets, Johnathon P. "Development of a Biomass-to-Methanol Process Integrating Solid State Anaerobic Digestion and Biological Conversion of Biogas to Methanol." The Ohio State University, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=osu1493807817862038.

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29

Rempel, Silvana Pereira. "Obtenção de micro/nanofibras poliméricas por fiação por sopro : parâmetros e aplicação no controle de pragas agrícolas." reponame:Repositório Institucional da UCS, 2018. https://repositorio.ucs.br/11338/3937.

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Este trabalho apresenta a obtenção de micro/nanofibras de EVA utilizando o método de fiação por sopro em solução e sua possibilidade de aplicação na agricultura, no controle de pragas, através da incorporação de feromônios sexuais sintéticos. Soluções com concentração de 0,5−15% em massa de EVA em xileno: clorofórmio (96:4% em peso) foram preparadas com base no parâmetro de solubilidade do copolímero. A viscosidade das soluções, assim como o regime de concentração foi determinado por meio de medidas reológicas. A morfologia e estrutura das fibras foram avaliadas por meio de microscopia eletrôn
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Abro, Manzoor Ali. "Nitrogen fertilization of the host plant influences susceptibility, production and aggressiveness of Botrytis cinerea secondary inoculum and on the efficacy of biological control." Phd thesis, Université d'Avignon, 2013. http://tel.archives-ouvertes.fr/tel-00985012.

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Nitrogen (N) fertilization is known to influence the susceptibility of many plants to a variety of diseases. In the case of diseases caused by Botrytis cinerea, the role of N fertilization appears to be variable, with high levels either fostering or reducing severity depending on the studies. To test whether this variability could be due to possible differences in the host plants, inoculum pressure or in the behavior of different strains of the pathogen, studies were carried out to investigate the effect of different N fertilization regimes on the susceptibility of tomato and lettuce to six is
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Kim, Kyung-Tae. "Seasonal variation of seaweed components and novel biological function of fucoidan extracted from brown algae in Quebec." Thesis, Université Laval, 2012. http://www.theses.ulaval.ca/2012/28833/28833.pdf.

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Fucus vesiculosus et Ascophyllum nodosum sont des algues brunes comestibles et abondantes au Québec. Cependant, elles ont été négligées en raison de leur valeur potentielle inconnue et de la période de récolte limitée. Afin de valider leur utilité, la composition chimique de ces algues et l’activité inhibitrice des enzymes digestives de l'amidon par les fucoïdanes extraits de ces deux espèces d'algues ont été étudiés en fonction de la saison. Les composants principaux des algues sont dans l’ordre: les polysaccharides> minéraux> protéines> fucoïdane> lipides>> composés phénoliques, et leur quan
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Yamoah, Emmanuel. "A model system using insects to vector Fusarium tumidum for biological control of gorse (Ulex europaeus)." Phd thesis, Lincoln University. Bio-Protection and Ecology Division, 2007. http://theses.lincoln.ac.nz/public/adt-NZLIU20080131.114607/.

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The overall objective of this study was to test the hypothesis that insects can vector F. tumidum conidia to infect gorse plants with the aim of developing an alternative approach to mycoherbicide delivery to control weeds. Four potential insect species (Apion ulicis, Cydia ulicetana, Epiphyas postvittana and Sericothrips staphylinus) were assessed for their ability to vector F. tumidum conidia. To achieve this, the external microflora (bacteria and fungi) and the size and location of fungal spores on the cuticle of these insect species were determined. In addition, the ability of the insects
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Benitez, Maria Soledad. "Applied T-RFLP Analyses for the Identification and Characterization of Microbial Populations Associated With Damping-Off Incidence in a Transitional Organic Cropping System." The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1218471106.

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Pitt, Joel Peter William. "Modelling the spread of invasive species across heterogeneous landscapes." Diss., Lincoln University, 2008. http://hdl.handle.net/10182/912.

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Invasive species are well known to cause millions of dollars of economic as well as ecological damage around the world. New Zealand, as an island nation, is fortunate because it has the opportunity to regulate and monitor travel and trade to prevent the establishment of new species. Nevertheless foreign species continue to arrive at the borders and continue to cross them, thus requiring some form of management. The control and management of a new incursion of an invasive species would clearly benefit from predictive tools that might indicate where and how quickly the species is likely to sprea
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Kean, J. M. "Metapopulation theory in practice." Lincoln University, 1999. http://hdl.handle.net/10182/1372.

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A metapopulation is defined as a set of potential local populations among which dispersal may occur. Metapopulation theory has grown rapidly in recent years, but much has focused on the mathematical properties of metapopulations rather than their relevance to real systems. Indeed, barring some notable exceptions, metapopulation theory remains largely untested in the field. This thesis investigates the importance of metapopulation structure in the ‘real world’, firstly by building additional realism into metapopulation models, and secondly through a 3-year field study of a real metapopulation s
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Berndt, Lisa A. "The effect of floral resources on the leafroller (Lepidoptera: Tortricidae) parasitoid Dolichogenidea tasmanica (Cameron)(Hymenoptera: Braconidae) in selected New Zealand vineyards." Lincoln University, 2002. http://hdl.handle.net/10182/1045.

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In this study, buckwheat (Fagopyrum esculentum Moench) and alyssum (Lobularia maritima (L.)) flowers were used to examine the effect of floral resources on the efficacy of the leafroller parasitoid Dolichogenidea tasmanica (Cameron) in vineyards. This was done by assessing the influence of these flowers on parasitoid abundance and parasitism rate, and by investigating the consequences of this for leafroller abundance. In laboratory experiments, alyssum flowers were used to investigate the effect of floral food on the longevity, fecundity and sex ratio of D. tasmanica. Dolichogenidea tasmanica
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Susser, Jessica R. "Can we reduce phosphorus runoff into Lake Erie by stimulating soil biota?" University of Toledo / OhioLINK, 2018. http://rave.ohiolink.edu/etdc/view?acc_num=toledo1515756009087471.

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Trajano, Marcos Antonio Borges. "Avaliação da pós-graduação brasileira em ciências agrárias nas quatro últimas avaliações trienais da CAPES." Universidade Federal de Santa Maria, 2013. http://repositorio.ufsm.br/handle/1/3530.

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The objectives of this work were (i) to investigate the evolution of scientific production in Brazilian Graduate Programs in Agricultural Sciences (Crop Production, Crop Science, Plant Pathology, Agricultural Entomology, Plant Breeding, Soil Science and Animal Science), in the triennial evaluations of 2001, 2004, 2007 and 2010, considering the former and current QUALIS; and (ii) to analyze the prospects of Graduate Programs in Agricultural Sciences in general, as well as persisting asymmetries in Brazilian regions. The data collected in CAPES and GeoCAPES Web Portal, regarding the 2001,
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Ramström, Louise. "Sällskapskaninens välfärd i Sverige : Djurhållning och dess inverkan." Thesis, Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:kau:diva-84215.

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Den domesticerade kaninen (Oryctolagus cuniculus) är idag ett vanligt sällskapsdjur världen över. Sällskapskaniner framhålls som det tredje mest populära sällskapsdjuret i Sverige, efter hund och katt. Trots detta behandlar endast en mycket liten andel av den övergripande forskningen inom ämnet hälsa- och välfärd just kanin. Den här studien har undersökt inverkan på sällskapskaninens välfärd av kaninägare med eller utan tidigare erfarenhet, sjukdomsbild, samt kaninägares preferenser - och om detta är faktorer som påverkar sällskapskaninens välfärd i Sverige. Studien g
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Simeonidis, Andrew. "Development of a mass rearing technique for the Tasmanian brown lacewing, Micromus tasmaniae Walker." Lincoln University, 1995. http://hdl.handle.net/10182/1302.

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Aphids are one of the most important insect pests of greenhouse crops yet to be controlled by biological means. Broad spectrum chemical control is becoming increasingly difficult to use in integrated pest management programmes, therefore, there is a need for a suitable biocontrol agent to be mass reared and released. The Tasmanian brown lacewing, Micromus tasmaniae Walker is an aphid predator that is found commonly throughout Australasia and has suitable characteristics that make it a candidate for mass rearing. A technique for rearing M. tasmaniae was developed. Eggs of M. tasmaniae were rear
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41

Gudex, B. W. "Sireline variation in neonatal lamb cold tolerance." Lincoln University, 2001. http://hdl.handle.net/10182/1055.

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The cost of lamb mortality caused by cold exposure has been estimated at approximately 40 million dollars per year. This value is probably conservative as it does not include the cost due to the reduction in productivity in hypothermic lambs that manage to survive or the cost of reduced selection potential incurred by fewer lambs surviving until selection. The objectives of this research was to investigate whether sire-line variation exists in neonatal lamb cold tolerance and whether polymorphism in the β₃ adrenergic receptor gene can be used as a genetic marker for lamb cold tolerance and lea
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42

Linard, Benjamin. "Développement de méthodes évolutionnaires d'extraction de connaissance et application à des systèmes biologiques complexes." Electronic Thesis or Diss., Strasbourg, 2012. http://www.theses.fr/2012STRAJ044.

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La biologie des systèmes s’est beaucoup développée ces dix dernières années, confrontant plusieurs niveaux biologiques (molécule, réseau, tissu, organisme, écosystème…). Du point de vue de l’étude de l’évolution, elle offre de nombreuses possibilités. Cette thèse porte sur le développement de nouvelles méthodologies et de nouveaux outils pour étudier l’évolution des systèmes biologiques tout en considérant l’aspect multidimensionnel des données biologiques. Ce travail tente de palier un manque méthodologique évidant pour réaliser des études haut-débit dans le récent domaine de la biologie évol
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43

Kay, M. K. (Nod). "An experimental evaluation of resource allocation in island plants with respect to their invertebrate herbivores." Lincoln University, 2008. http://hdl.handle.net/10182/1442.

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New Zealand’s isolation and periods of marine transgression have limited its biota to an extent which can be considered depauperate, even by island standards. Endemic vertebrates are rare and prominent invertebrate families, such as the renowned forest defoliators of the Lymantriidae, are absent. The proven vulnerability of the flora to introduced vertebrates reaffirms a belief in the invasiveness of islands and fuels the contingency plans aimed at averting similar devastation from further alien invertebrate defoliators. Nothofagus is a dominant element of the climax forests of New Zealand and
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Evans, Alison. "The impact of selective beech (Nothofagus spp.) harvest on litter-dwelling invertebrates and the process of litter decomposition." Lincoln University, 1999. http://hdl.handle.net/10182/1717.

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Minimising the potential impact of forest management requires an understanding of the key elements that maintain forest diversity and its role in ecological processes. Invertebrates are the most diverse of all biota and play important roles in maintaining forest processes. However, little is known about invertebrates in New Zealand's beech forests or the degree to which selective beech harvest might impact on their diversity and ability to carry out ecosystem processes. Studying ecosystem responses to disturbance is considered vital for understanding how ecosystems are maintained. One of the m
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Mason, Susan Leigh. "Metabolism of triacylglycerol-rich lipoproteins in sheep." Lincoln University, 1991. http://hdl.handle.net/10182/1756.

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This thesis describes two approaches for studying of lipoprotein metabolism in sheep. The first approach involves the assay of lipoprotein lipase (LPL) activity to determine the role of lipoprotein-triacylglycerol fatty acids in fat deposition in sheep. This enzyme is the rate limiting enzyme in the hydrolysis of fatty acids from lipoprotein-triacylglycerol. The second approach was to characterize and quantify in vivo lipoprotein metabolism using iodinated very low density lipoprotein (¹²⁵I-VLDL) and low density lipoprotein (¹³¹I-LDL). Cross-bred lambs were divided into two treatment groups a
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46

Liu, Hui Qing 1957. "Fingerprinting biological materials." Thesis, The University of Arizona, 1992. http://hdl.handle.net/10150/291369.

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A study for non-destructive measurement and analysis of agricultural products was undertaken. Some enhancements were made to a spectrophotometer, DK-2A to meet the requirements of low uniform error band when using the factor analysis method. The instrument was modified by adding an integrating sphere, optical transducer, and electronic interface linked to a computer. The instrument was calibrated using targets traceable to NITS standards of BaSO₄ with mixtures of Carbon Black. This gave a range of known reflectance and provided consistent and reproducible data every 5 nm wavelengths between 35
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Alexander, Jane. "Ecology of long-tailed bats Chalinolobus tuberculatus (Forster, 1844) in the Waitakere Ranges: implications for monitoring." Lincoln University, 2001. http://hdl.handle.net/10182/1682.

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The long-tailed bat (Chalinolobus tuberculatus) is a threatened species endemic to New Zealand. Historical anecdotes indicate that long-tailed bat populations have declined. However, it is unknown if all populations have declined and if declines are historical or ongoing. Thus, the development and implementation of a national network of long-tailed bat monitoring sites is a priority of the Department of Conservation's Bat Recovery Plan. Potentially, information gained from a national monitoring programme would assist conservation managers to target resources towards those areas where bat popul
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48

Madibela, Othusitse Ricky. "Protein nutrition of livestock grazing high quality pasture." Lincoln University, 2010. http://hdl.handle.net/10182/1571.

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This thesis describes a series of four experiments designed to evaluate the role of the supply of protein in livestock grazing high quality pasture during mating and during pregnancy. The first two studies investigated the effects of high crude protein content of spring or autumn re-growth pasture on the reproductive performance of dairy cows and of ewes at mating. The last two studies investigated how the dietary supply of protein, body condition and their interactions contribute to the breakdown of immunity during the peri-parturient period in ewes and investigated underlying endocrine mecha
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Pratt, Caroline. "Factors affecting the establishment, growth and survival of native woody plant communities on the Canterbury Plain, New Zealand." Lincoln University, 1999. http://hdl.handle.net/10182/1113.

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The native plant communities of Canterbury, South Island, New Zealand have been severely modified and degraded and the Canterbury Plain (750,000 ha) retains few remnants of its original forest and other ecosystems. The research presented here considers the mutualistic roles of exotic and indigenous species in the process of restoring degraded landscapes. Exotic species may have an important role in the (re) establishment of desired indigenous species, and may influence succession through to a forest dominated by them. One aspect of this work describes indigenous plant community regeneration fa
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Walbert, Katrin. "Ectomycorrhizal communities associated with a Pinus radiata plantation in the North Island, New Zealand." Lincoln University, 2008. http://hdl.handle.net/10182/658.

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Aboveground and belowground ectomycorrhizal (ECM) communities associated with different age classes of the exotic plantation species Pinus radiata were investigated over the course of two years in the North Island of New Zealand. ECM species were identified with a combined approach of morphological and molecular (restriction fragment length polymorphism (RFLP) and DNA sequencing) analysis. ECM species richness and diversity of a nursery in Rotorua, and stands of different ages (1, 2, 8, 15 and 26 yrs of age at time of final assessment) in Kaingaroa Forest, were assessed above- and belowground;
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