Relevant bibliographies by topics / Seed distribution / Dissertations / Theses
To see the other types of publications on this topic, follow the link: Seed distribution.

Dissertations / Theses on the topic 'Seed distribution'

Author: Grafiati
Published: 4 June 2021
Last updated: 27 July 2025

Create a spot-on reference in APA, MLA, Chicago, Harvard, and other styles

Select a source type:

Consult the top 50 dissertations / theses for your research on the topic 'Seed distribution.'

Next to every source in the list of references, there is an 'Add to bibliography' button. Press on it, and we will generate automatically the bibliographic reference to the chosen work in the citation style you need: APA, MLA, Harvard, Chicago, Vancouver, etc.

You can also download the full text of the academic publication as pdf and read online its abstract whenever available in the metadata.

Browse dissertations / theses on a wide variety of disciplines and organise your bibliography correctly.

1

Loveday, Rachel Ellen Leonard. "Influence of Seed Treatment on Tobacco Mosaic Virus Incidence in Tobacco Seedlings and Virus Distribution in Greenhouse Transplant Production." Thesis, Virginia Tech, 2007. http://hdl.handle.net/10919/31396.

Full text
Abstract:
Tobacco mosaic virus (TMV) is an economically important pathogen that has been studied for over one hundred years. Seedlings, seed coats, and nutrient solution were assayed for the presence of the virus and seed treatments were tested on seeds. Double antibody sandwich enzyme-linked immunosorbent assay (DAS ELISA) and biological local lesion assay data were collected. Seed coats from seed collected from TMV infected plants were always positive for TMV regardless of chemical treatment. Seed from infected source plants have lower germination than seed from healthy plants. Trisodium phosphat
APA, Harvard, Vancouver, ISO, and other styles
2

Ligat, Julio S. "Pathology and distribution in the host of pea seed-borne mosaic virus." Title page, contents and summary only, 1993. http://web4.library.adelaide.edu.au/theses/09PH/09phl723.pdf.

Full text
Abstract:
Includes bibliographical references (leaves 82-92). Five isolates of pea seed-borne mosaic virus were compared by host range and symptomatology on 16 pisum sativum cultivars lines, 21 lines of Lathyrus and Lens spp. and several indicator species
APA, Harvard, Vancouver, ISO, and other styles
3

Butler, Donald William. "Seed dispersal syndromes and the distribution of woody plants in South-East Queensland's vine-forests /." St. Lucia, Qld, 2003. http://www.library.uq.edu.au/pdfserve.php?image=thesisabs/absthe17701.pdf.

Full text
APA, Harvard, Vancouver, ISO, and other styles
4

Rusch, Ursina Denise. "Scatter-hoarding in Acomys subspinosus : the roles of seed traits, seasonality and cache retrieval." Thesis, Stellenbosch : Stellenbosch University, 2011. http://hdl.handle.net/10019.1/18076.

Full text
Abstract:
Thesis (MSc)--Stellenbosch University, 2011.<br>ENGLISH ABSTRACT: With growing concerns about current environmental issues, such as climate change, that affect ecosystems around the world, understanding ecosystem function is becoming increasingly important. In this study, I investigate the plant – seed disperser mutualism between an endemic scatter-hoarding mouse Acomys subspinosus and its Proteaceae plant counterpart Leucadendron sessile in the biodiversity hotspot of the Cape Floristic Region, South Africa. The main objective of this thesis is to investigate the seed selection and caching b
APA, Harvard, Vancouver, ISO, and other styles
5

Neupane, Ram C. "Modeling Seed Dispersal and Population Migration Given a Distribution of Seed Handling Times and Variable Dispersal Motility: Case Study for Pinyon and Juniper in Utah." DigitalCommons@USU, 2015. https://digitalcommons.usu.edu/etd/4638.

Full text
Abstract:
The spread of fruiting tree species is strongly determined by the behavior and range of fruit-eating animals, particularly birds. Birds either consume and digest seeds or carry and cache them at some distance from the source tree. These carried and settled seeds provide some form of distribution which generates tree spread to the new location. Firstly, we modal seed dispersal by birds and introduce it in a dispersal model to estimate seed distribution. Using this distribution, we create a population model to estimate the speed at which juniper and pinyon forest boundaries move. Secondly, we in
APA, Harvard, Vancouver, ISO, and other styles
6

Catzim, Divan. "Distribution of ground-layer plant species in a fragmented landscape in the Corozal District, Belize, Central America." Wright State University / OhioLINK, 2007. http://rave.ohiolink.edu/etdc/view?acc_num=wright1187444382.

Full text
APA, Harvard, Vancouver, ISO, and other styles
7

Pritz, Jakub. "Biological Effective Dose (BED) Distribution Matching for Obtaining Brachytherapy Prescription Doses & Dosimetric Optimization for Hybrid Seed Brachytherapy." Scholar Commons, 2011. http://scholarcommons.usf.edu/etd/3298.

Full text
Abstract:
Radioactive seed implant brachytherapy is a common radiotherapy treatment method for prostate cancer. In current clinical practice, a seed consists of a single isotope, such as 125I or 103Pd. A seed containing a mixture of two isotopes has been proposed for prostate cancer treatment. This study investigates a method for defining a prescription dose for new seed compositions based on matching the biological equivalent dose (BED) of a reference plan. Ten prostate cancer cases previously treated using single isotope seeds (5 using 125I seeds and 5 using 103Pd seeds) were selected for this study
APA, Harvard, Vancouver, ISO, and other styles
8

Margalef, Jornet Maria. "External and internal factors affecting the metabolism, bioavailability, tissue distribution, and bioactivity of grape seed flavanols." Doctoral thesis, Universitat Rovira i Virgili, 2015. http://hdl.handle.net/10803/318803.

Full text
Abstract:
Els flavanols, compostos polifenòlics abundants en fruites i vegetals, són beneficiosos per a la salut en afectar processos cel·lulars i fisiològic. El seu consum regular ha estat associat amb una baixa mortalitat i un baix risc de patir malalties cardiovasculars. Els flavanols que s'absorbeixen a l'intestí prim són reconeguts com xenobiòtics, de tal manera que són ràpidament conjugats en formes glucuronidades, sulfatades i metilades per enzims de fase II tant a l'intestí prim com al fetge. Els polímers dels flavanols arriben al còlon on són metabolitzats per la microbiota a àcids fenòlics de
APA, Harvard, Vancouver, ISO, and other styles
9

Strydom, Matthys. "A perspective on the seed bank dynamics of Acacia saligna." Thesis, Stellenbosch : Stellenbosch University, 2012. http://hdl.handle.net/10019.1/20389.

Full text
Abstract:
Thesis (MScConEcol)--Stellenbosch University, 2012.<br>ENGLISH ABSTRACT: Acacia saligna, or Port Jackson, is an Australian Acacia which has spread throughout the Western and Eastern Cape provinces of South Africa where it has become invasive and a prominent feature of the vegetation. In areas where A. saligna establishes it replaces natural vegetation, alters ecosystem processes and interferes with agricultural practices. Consequently large management efforts have been made to eradicate this invasive alien tree. However, its large and persistent soil stored seed bank, even in the presence
APA, Harvard, Vancouver, ISO, and other styles
10

Gatehouse, Hazel A. W. "Ecology of the naturalisation and geographic distribution of the non-indigenous seed plant species of New Zealand." Diss., Lincoln University, 2008. http://hdl.handle.net/10182/1009.

Full text
Abstract:
The naturalisation and subsequent spread of non-indigenous plant species (NIPS) is a major problem for most regions of the world. Managing plant invasions requires greater understanding of factors that determine initial naturalisation and distribution of wild NIPS. By the year 2000, 2252 NIPS were recorded as wild (1773 fully naturalised and 479 casual) in New Zealand. From published literature and electronic herbaria records, I recorded year of discovery of wild populations, and regional distribution of these wild NIPS. I also recorded species related attributes hypothesised to affect natural
APA, Harvard, Vancouver, ISO, and other styles
11

Mackasmiel, Lucas A. "Assessing the Distribution and Impact of Bean pod mottle virus (BPMV) as a Re-emerging Virus, and Soybean mosaic virus (SMV) in Soybean Grown in Virginia." Diss., Virginia Tech, 2004. http://hdl.handle.net/10919/28836.

Full text
Abstract:
<I>Bean pod mottle virus </I>(BPMV, Genus <I>Comovirus</I>, Family: <I>Comoviridae</I>)is an important virus in soybean (<I>Glycine max</I> (L.) Merrill), causing quality and yield loss due to seed coat mottling and seed weight reduction. Although BPMV has been known in Virginia since 1958 and has always been regarded as causing negligible losses, its impact is changing as BPMV incidence has increased in many soybean growing areas of Virginia and the USA in general. From 1997 to 2001, a total of five BPMV isolates (V-W1, V-W2, V-S98-1, V-S98-15 and V-S01-10) were collected in Virginia and ch
APA, Harvard, Vancouver, ISO, and other styles
12

Vaitelytė, Birutė. "Patterns of distribution of insect pests (Ceutorhynchus spp., dasineura brassicae) on stems and pods of winter and spring oil seed rape crops and damage done by these pests." Doctoral thesis, Lithuanian Academic Libraries Network (LABT), 2014. http://vddb.library.lt/obj/LT-eLABa-0001:E.02~2014~D_20141124_140853-79060.

Full text
Abstract:
Research objective. The study was aimed to establish development and distribution patterns of cabbage stem weevil (Ceutorhynchus pallidactylus), cabbage seed weevil (C. obstrictus) and Brassica pod midge (Dasineura brassicae) in winter and spring oilseed rape crops, to estimate insect damage, to compare the efficacy of insecticides of different mode of action and to determine the optimal timing of insecticide application. Research tasks. 1. To determine species abundance and diversity of Ceutorhynchus spp. infesting oilseed rape crops. 2. To study cabbage stem weevil’s (C. pallidactylus) biolo
APA, Harvard, Vancouver, ISO, and other styles
13

Bekker, Suria. "Assessment of the identity, distribution and control options for seed- and leaf-gall nematodes in grass in South Africa / Suria Bekker." Thesis, North-West University, 2008. http://hdl.handle.net/10394/2585.

Full text
APA, Harvard, Vancouver, ISO, and other styles
14

Cao, Wenchao. "Identifying the Brain's most Locally Connected Regions." University of Cincinnati / OhioLINK, 2014. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1406821683.

Full text
APA, Harvard, Vancouver, ISO, and other styles
15

Yahyaoui, Emna. "Use of standard and setup of non conventional techniques for the elimination of viruses associated with Fig Mosaic Disease (FMD) in fig germplasm (Ficus carica L.)." Doctoral thesis, Universitat Politècnica de València, 2017. http://hdl.handle.net/10251/79876.

Full text
Abstract:
Abstract Ficus carica L. is considered one of the oldest fruit trees in the Mediterranean basin and is widely grown and harvested for the consumption of its fruits dry and fresh. This species is affected by different virus diseases, especially by Fig mosaic disease (FMD), for which Fig leaf mottle-associated virus 1 (FLMaV-1), Fig leaf mottle-associated virus 2 (FLMaV-2), Fig mild mottling-associated virus (FMMaV), Fig mosaic virus (FMV), Fig latent virus 1 (FLV-1), Fig badnavirus 1 (FBV-1) and Fig fleck-associated virus (FFkaV) are associated. FMD is the most widespread disorder of this spe
APA, Harvard, Vancouver, ISO, and other styles
16

Shepherd, Ashley Lauren. "Mapping of Sonoran Desert Vegetation Communities and Spatial Distribution Differences of Larrea Tridentata Seed Density in Relation to Ambrosia Dumosa and Ambrosia Deltoidea, San Cristobal Valley, Arizona." Thesis, The University of Arizona, 2011. http://hdl.handle.net/10150/217053.

Full text
Abstract:
Vegetation in the San Cristobal Valley of Barry M. Goldwater Range-East was mapped using a combination of field surveys and aerial imagery interpretation to contribute to ongoing inventory of natural resources for the BMGR-East as well as assist in resource management decisions. Eighteen vegetation associations were identified and mapped through collection of 186 samples to characterize vegetation associations. The most common vegetation association was Larrea tridentata monotype, covering 29% of the area mapped. Larrea tridentata is a widely spread shrub throughout the Sonoran, Chihuahuan and
APA, Harvard, Vancouver, ISO, and other styles
17

CUENA, LOMBRANA ALBA. "Integrated in situ and ex situ approach for Gentiana lutea L. ssp. lutea conservation." Doctoral thesis, Università degli Studi di Cagliari, 2016. http://hdl.handle.net/11584/266729.

Full text
Abstract:
Gentiana lutea L. subsp lutea (hereafter G. lutea) is a long-lived geophyte, which has high medicinal value for the intensely bitter properties residing mainly in the root, being the main vegetable bitter employed in homeopathy and for the liqueurs production. G. lutea is presented in the Annex V of the Directive 92/43/EEC. In addition, it’s included in the List of endangered medicinal plants in the Annex D to the Council Regulation (EC) No. 338/97 of EU, whose purpose is the protection of plant species by control of their trade. Due to a lack of knowledge on the current G. lutea distrib
APA, Harvard, Vancouver, ISO, and other styles
18

Bojan, Konstantinović. "Ambrosia artemisiifolia L. – REZERVE SEMENA UZEMLJIŠTU, KLIJAVOST, RASPROSTRANJENOSTI SUZBIJANJE." Phd thesis, Univerzitet u Novom Sadu, Poljoprivredni fakultet u Novom Sadu, 2015. https://www.cris.uns.ac.rs/record.jsf?recordId=94323&source=NDLTD&language=en.

Full text
Abstract:
Ambrosia artemisiifolia L., invazivna korovsko-ruderalna biljka, poslednjihgodina u na&scaron;oj zemlji predstavlja izuzetno veliki problem, ne samo za poljoprivredunego i za stanovni&scaron;tvo, izazivajući svojim polenom jake alergijske i druge zdravstvenekomplikacije. Shvatajući probleme koje ona izaziva, sve zemlje u kojima ambrozijapredstavlja veliki, pre svega zdravstveni problem, ulažu ogromne napore, izdvajajuvelika finansijska sredstva, organizuju stanovni&scaron;tvo, &scaron;kole, vojsku, javne službe,sredstva informisanja, donose zakone, uredbe i deklaracije, da bi ograničili njeno&
APA, Harvard, Vancouver, ISO, and other styles
19

Meiga, Ana Yoko Ykeuti. "Mamíferos e a regeneração da palmeira Attalea dubia em uma área de Mata Atlântica na região Sudoeste do Estado de São Paulo, Brasil." Universidade Federal de São Carlos, 2012. https://repositorio.ufscar.br/handle/ufscar/1520.

Full text
Abstract:
Made available in DSpace on 2016-06-02T19:26:21Z (GMT). No. of bitstreams: 1 MEIGA_Ana_2012.pdf: 1469449 bytes, checksum: 04e1e39246304f63a7f5b2af105d0d8a (MD5) Previous issue date: 2012-05-30<br>Animals may influence the spatial distribution and survivorship of plants with which they interact. For instance, the Janzen-Connell model predict that the probability of seed and seedling survivorship is reduced around the parental plant because of the intense seed predation and herbivory in this place, which suggests the role of seed dispersal in plant regeneration. The hunting and habitat fragmen
APA, Harvard, Vancouver, ISO, and other styles
20

Corrêa, Marciabela Fernandes. "Variabilidade espacial da produtividade e da qualidade de sementes de trigo e soja produzidas em sucessão sob sistema de plantio direto." Universidade Federal de Pelotas, 2017. http://guaiaca.ufpel.edu.br:8080/handle/prefix/4019.

Full text
Abstract:
Submitted by Gabriela Lopes (gmachadolopesufpel@gmail.com) on 2018-07-03T13:33:24Z No. of bitstreams: 1 TESE Marciabela Fernandes Corrêa.pdf: 2119414 bytes, checksum: 80159e88d63216d0d78421ffa4b21346 (MD5)<br>Approved for entry into archive by Aline Batista (alinehb.ufpel@gmail.com) on 2018-07-03T18:46:11Z (GMT) No. of bitstreams: 1 TESE Marciabela Fernandes Corrêa.pdf: 2119414 bytes, checksum: 80159e88d63216d0d78421ffa4b21346 (MD5)<br>Approved for entry into archive by Aline Batista (alinehb.ufpel@gmail.com) on 2018-07-03T18:47:33Z (GMT) No. of bitstreams: 1 TESE Marciabela Fernandes Corrêa.p
APA, Harvard, Vancouver, ISO, and other styles
21

MARQUES, VITOR JOSE AZEVEDO. "A HEURISTIC METHOD OF DISTRIBUTION. STUDY OF CASE: SEEDS DISTRIBUTION FROM A DC." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2007. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=11745@1.

Full text
Abstract:
Este trabalho faz reflexões sobre como é possível avançar na melhoria do gerenciamento de transporte, especificamente em relação às decisões mais operacionais, como a roteirização, através de métodos heurísticos simples e já difundidos na literatura. Utilizando um estudo de caso, é possível apresentar os benefícios da mudança de um método empírico de roteirização, totalmente baseado nos conhecimentos tácitos, para a aplicação de um método de criação de áreas de entregas e definição de rotas fixas de forma empírica. Além desta análise, o trabalho também apresenta a aplicação de um méto
APA, Harvard, Vancouver, ISO, and other styles
22

Yatskul, Andrii. "Modélisation et optimisation énergétique des organes d'un semoir pneumatique." Thesis, Dijon, 2016. http://www.theses.fr/2016DIJOS023/document.

Full text
Abstract:
Dans le contexte du développement d’une agriculture durable, il est nécessaire d’optimiser le coût énergétique des opérations agricoles tout en garantissant des temps de travaux courts ainsi que la qualité des opérations réalisées. Cette question concerne en particulier l’opération du semis qui est déterminante pour la qualité de la future récolte. Les semoirs de grande capacité et à haute productivité conçus aujourd’hui se doivent d’être compatibles avec cet ensemble de contraintes. L’enjeu essentiel de cette thèse est donc d’élaborer une méthodologie innovante et utilisant des outils de modé
APA, Harvard, Vancouver, ISO, and other styles
23

Bengtsson, Emil. "Doseplanning ocular tumors with 125I-seeds." Thesis, Stockholm University, Medical Radiation Physics (together with KI), 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-7211.

Full text
Abstract:
<p>Since 1986 patients with ocular malignant melanoma have been treated with Ru-106 plaques at S:t Erik Eye Hospital. In 1998 I-125 radioactive seed plaques was presented as an alternative to Ru-106 when treating tumors with an apical height greater than 7 mm. Until June 2005 the doseplanning of these plaques was based on a depth-dose curve made in the dose planning system Cadplan supplied by Varian Medical Systems. In the recent years the capabilities of computerized 3D dose planning system has increased greatly. The number of types of seeds on the market has also increased.</p><p>In order to
APA, Harvard, Vancouver, ISO, and other styles
24

Van, Rijn Walter. "Rethinking the status of the art object through distribution." Thesis, University of Southampton, 2015. https://eprints.soton.ac.uk/384037/.

Full text
Abstract:
Current discourse about internet based art practices brings renewed interest to the materiality of the art object and the exhibition event. Digital and internet artists reflecting on the institutionalisation of the internet find that the turn away from the world of the institutionalised gallery has become untenable, and now create artwork that functions in both realms: the gallery and online. My research acknowledges this dual approach and proposes that accordingly areas of interest, such as negation and the material condition of the art object within conceptual art, institutional critique, an
APA, Harvard, Vancouver, ISO, and other styles
25

Silva, Laura. "Modelling the SED Evolution of Dusty Galaxies and Applications." Doctoral thesis, SISSA, 1999. http://hdl.handle.net/20.500.11767/4371.

Full text
Abstract:
In Chap. 2 our spectrophotometric model, GRASIL, is described in details. Since the first input to provide to GRASIL is the star formation history of the model galaxy, we describe our chemical code, that will then be used in different applications throughout the thesis. Then we present our adopted dust model, i.e. our choice for chemical and physical properties of dust grains, their optical efficiencies and size distribution. This is fixed according to the observations of extinction and emission for the diffuse ISM in our galaxy. Then, once we set the geometrical distribution of stars and dust
APA, Harvard, Vancouver, ISO, and other styles
26

Romero, Laís Bim. "O serviço de distribuição de mudas e sementes e o fomento à arborização urbana do Estado de São Paulo no início do século XX /." Bauru, 2019. http://hdl.handle.net/11449/191021.

Full text
Abstract:
Orientador: Enokibara Enokibara<br>Resumo: A presente pesquisa insere-se no campo da história do paisagismo, enfocando a arborização, e pretende contribuir para o entendimento da inserção das espécies vegetais empregadas na arborização urbana do Estado de São Paulo no início do século XX. Seu objetivo é analisar o papel do Serviço de Distribuição de Mudas e Sementes (SDMS) da Secretaria da Agricultura, Comércio e Obras Públicas (SACOP), tendo como referência de análise os Relatórios Anuais da Secretaria, entre os anos de 1892, quando a SACOP é criada, até 1916, quando a distribuição de mudas e
APA, Harvard, Vancouver, ISO, and other styles
27

Rochelle, André Luis Casarin 1980. "Distribuição geográfica, filogenia, morfologia e evolução da eficiência de dispersão de Bignonieae (Bignoniaceae)." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/314995.

Full text
Abstract:
Orientadores: Fernando Roberto Martins, Lucia Garcez Lohmann<br>Tese (doutorado) - Universidade Estadual de Campinas, Instituto de Biologia<br>Made available in DSpace on 2018-08-22T05:17:40Z (GMT). No. of bitstreams: 1 Rochelle_AndreLuisCasarin_D.pdf: 2530968 bytes, checksum: 4125ca228d54cbb9e8ca94ccbb3965ff (MD5) Previous issue date: 2013<br>Resumo: Integramos biogeografia, ecologia, filogenia e evolução da tribo Bignonieae (Bignoniaceae) para testar as seguintes hipóteses: (1) a área de distribuição geográfica das espécies é positivamente relacionada com sua idade filogenética, conhecida
APA, Harvard, Vancouver, ISO, and other styles
28

Newman, Sarah F. "Photometric and spectral analysis of the distribution of crystalline and amorphous ices on Enceladus as seen by Cassini." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/114323.

Full text
Abstract:
Thesis: S.B., Massachusetts Institute of Technology, Department of Earth, Atmospheric, and Planetary Sciences, 2006.<br>Cataloged from PDF version of thesis. Pages 26 to 30 missing from original thesis.<br>Includes bibliographical references (pages 30-31).<br>Photometric and Spectral analysis of data from the Cassini Visual and Infrared Mapping Spectrometer (VIMS) has yielded intriguing findings regarding the properties and composition of the surface of Saturn's satellite Enceladus. Spectral cubes, which contain both spatial and spectral information, were obtained of this satellite with a wave
APA, Harvard, Vancouver, ISO, and other styles
29

Broome, Linda Suzanne. "Determinants of Small Rodent Distribution and Abundance in a Shrub-Steppe Ecosystem: Influences of Seeds, Ants and Shrubs." DigitalCommons@USU, 1988. https://digitalcommons.usu.edu/etd/7554.

Full text
Abstract:
This study had two major objectives; firstly to test the hypothesis of ongoing competition for seeds between small rodents and harvester ants, Pogonomyrmex occidental is, in a cold desert ecosystem; secondly to elucidate how seed abundance and shrub cover influence the distribution and abundance of deer mice, Peromyscus maniculatus. The study area was a sagebrush (Artemisia tridentata) dominated shrubsteppe in southwestern Wyoming. Responses of the small mammal community to ant removal and food addition were assessed on replicated study plots between September 1981 and September 1983. Food add
APA, Harvard, Vancouver, ISO, and other styles
30

Trauernicht, Christoph Jan. "Measured and calculated dose distributions in the “claws” – a specially designed gold applicator loaded with I-125 seeds." Doctoral thesis, Faculty of Health Sciences, 2020. http://hdl.handle.net/11427/32371.

Full text
Abstract:
Introduction: The “Claws” is a unique gold applicator for whole-eye radiotherapy that was designed at Groote Schuur Hospital. It is used to treat retinoblastoma. Under general anaesthesia, a pericorneal ring is attached to the four extraocular muscles, and four legs, each loaded with I125 seeds, are inserted beneath the conjunctiva in-between each pair of muscles and attached anteriorly to the ring. The four legs that are now sutured onto the ring give it a claw-like appearance, hence the name for the applicator. The applicator was designed in such a way that the dose is directed towards the m
APA, Harvard, Vancouver, ISO, and other styles
31

Bellanger, Solène. "Etude de la biologie d'une messicole en régression : le bleuet (Centaurea cyanus L.)." Phd thesis, Université de Bourgogne, 2011. http://tel.archives-ouvertes.fr/tel-00741148.

Full text
Abstract:
Depuis les années 1950, l'intensification des pratiques agricoles concourt à une augmentation de la pression anthropique entraînant une raréfaction des espèces spécialistes des parcelles cultivées, ce qui contribue à l'érosion de la diversité biologique des agroécosystèmes. Parmi les espèces en déclin, on compte de nombreuses messicoles dont le bleuet (Centaurea cyanus L.), fleur emblématique des moissons. Or, cette espèce peut rendre des services écosystémiques comme hôte de prédateurs de ravageurs des cultures et ressource privilégiée de certains pollinisateurs qui justifieraient son maintie
APA, Harvard, Vancouver, ISO, and other styles
32

Nicolai, Nancy Carol. "Plant community dynamics governed by red harvester ant (Pogonomyrmex barbatus) activities and their role as drought refugia in a semi-arid savanna." Texas A&M University, 2005. http://hdl.handle.net/1969.1/2657.

Full text
Abstract:
This study examined modifications made by Pogonomyrmex barbatus, by their processes of granivory and nest construction, to forb and grass dynamics under large-scale disturbances of fire, recent drought and long-term, large-mammalian herbivory using comparative studies, field experimental manipulations, and a simulation model on the Edwards Plateau, Texas. Ant nests are refugia for grass survival during extreme droughts as demonstrated during the drought of 1998 to 2002. Significantly greater cover of grasses and lower abundance and cover of forbs was found beside nests compared with surroundin
APA, Harvard, Vancouver, ISO, and other styles
33

Bissinger, Vera. "Factors determining growth and vertical distribution of planktonic algae in extremely acidic mining lakes (pH 2.7)." Phd thesis, [S.l. : s.n.], 2003. http://pub.ub.uni-potsdam.de/2003/0010/bissing.pdf.

Full text
APA, Harvard, Vancouver, ISO, and other styles
34

Filion, Jacques. "Distribution spatiale de la regénération d'épinette noire (Picea mariana (Mill.) BSP) 8 ans après un feu de forêt /." Thèse, Chicoutimi : Université du Québec à Chicoutimi, 1994. http://theses.uqac.ca.

Full text
APA, Harvard, Vancouver, ISO, and other styles
35

Aryal, Prakash. "REEVALUATION OF THE AAPM TG-43 BRACHYTHERAPY DOSIMETRY PARAMETERS FOR AN 125I SEED, AND THE INFLUENCE OF EYE PLAQUE DESIGN ON DOSE DISTRIBUTIONS AND DOSE-VOLUME HISTOGRAMS." UKnowledge, 2014. http://uknowledge.uky.edu/physastron_etds/14.

Full text
Abstract:
The TG-43 dosimetry parameters of the AdvantageTM 125I model IAI-125A brachytherapy seed were studied. An investigation using modern MCNP radiation transport code with updated cross-section libraries was performed. Twelve different simulation conditions were studied for a single seed by varying the coating thickness, mass density, photon energy spectrum and cross-section library. The dose rate was found to be 6.3% lower at 1 cm in comparison to published results. New TG-43 dosimetry parameters are proposed. The dose distribution for a brachytherapy eye plaque, model EP917, was investigated, in
APA, Harvard, Vancouver, ISO, and other styles
36

Roberts, Zoe Elizabeth. "The lipid biomarker distribution of cold seep mats and the possible influence of extracellular polymeric substances on calcium carbonate formation associated with the anaerobic oxidation of methane." Thesis, University of Bristol, 2010. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.520212.

Full text
APA, Harvard, Vancouver, ISO, and other styles
37

Beltrame, Rômulo André. "Germinação, morfologia e análise da distribuição espacial da qualidade fisiológica de sementes de Joannesia princeps Vell." Universidade Federal do Espírito Santo, 2013. http://repositorio.ufes.br/handle/10/5780.

Full text
Abstract:
Made available in DSpace on 2016-12-23T13:51:46Z (GMT). No. of bitstreams: 1 Romulo Andre Beltrame.pdf: 2586849 bytes, checksum: b107982280bfe2f4d8a7440e230b39e3 (MD5) Previous issue date: 2013-02-28<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior<br>O sucesso na fase de produção de mudas de espécies florestais esta diretamente relacionado com a qualidade fisiológica das sementes utilizadas. O presente trabalho teve como objetivo obter informações sobre a propagação da cutieira (Joannesia princeps) e da qualidade fisiológica de suas sementes, além de estudar aspectos morfológi
APA, Harvard, Vancouver, ISO, and other styles
38

Giovannoli, Elodie. "Les galaxies observées de l'ultraviolet à l'infrarouge. Les résultats du télescope spatial Herschel." Thesis, Aix-Marseille 1, 2011. http://www.theses.fr/2011AIX10095/document.

Full text
Abstract:
Ma thèse s'inscrit dans l'étude de la physique extragalactique. Pendant mes trois années de thèse j'ai travaillé sur les méthodes d'ajustement de la distribution d'énergie spectrale des galaxies (ou SED fitting) en effectuant un bilan énergétique entre l'émission en ultraviolet et l'émission en infrarouge. A cet effet j'ai très largement utilisé le code CIGALE (Burgarella et al. 2005, Noll et al. 2009) qui permet d'estimer les paramètres physiques des galaxies à partir de l'analyse de leur émission dans des bandes larges et intermédiares de l'ultraviolet au submillimétrique. J'ai procédé penda
APA, Harvard, Vancouver, ISO, and other styles
39

Caetano, Ana Luísa Neto. "Derivation of soil screening values for metals in Portuguese natural soil." Doctoral thesis, Universidade de Aveiro, 2014. http://hdl.handle.net/10773/13764.

Full text
Abstract:
Doutoramento em Biologia<br>The increasing human activity has been responsible by profound changes and a constinuos degradation of the soil compartment in all the European territory. Some European policies are appearing focusing soil’s protection and the management of contaminated sites, in order to recover land for other uses. To regulate the risk assessment and the management of contaminated soils, many European member states adopted soil guideline values, as for example soil screnning values (SSV).These values are particularly useful for the the first tier of the Ecological Risk Assessment
APA, Harvard, Vancouver, ISO, and other styles
40

Maharaj, Shobha S. "The impact of climate change on the small island developing states of the Caribbean." Thesis, University of Oxford, 2011. http://ora.ox.ac.uk/objects/uuid:914cc340-83e1-4ea4-b985-fe863b1dea7d.

Full text
Abstract:
Small Island Developing States (SIDS) of the Caribbean are one of the world’s ‘hottest’ ‘biodiversity hotspots’. However, this biodiversity continues to be threatened by habitat loss, and now, by climate change. The research reported here investigated the potential of species distribution modelling (SDM) as a plant conservation tool within Caribbean SIDS, using Trinidad as a case study. Prior to the application of SDM, ancillary analyses including: (i) quantification and mapping of forest cover change (1969 to 2007) and deforestation rates, and (ii) assessment of the island’s vegetation commun
APA, Harvard, Vancouver, ISO, and other styles
41

Graversen, Therese. "Statistical and computational methodology for the analysis of forensic DNA mixtures with artefacts." Thesis, University of Oxford, 2014. http://ora.ox.ac.uk/objects/uuid:4c3bfc88-25e7-4c5b-968f-10a35f5b82b0.

Full text
Abstract:
This thesis proposes and discusses a statistical model for interpreting forensic DNA mixtures. We develop methods for estimation of model parameters and assessing the uncertainty of the estimated quantities. Further, we discuss how to interpret the mixture in terms of predicting the set of contributors. We emphasise the importance of challenging any interpretation of a particular mixture, and for this purpose we develop a set of diagnostic tools that can be used in assessing the adequacy of the model to the data at hand as well as in a systematic validation of the model on experimental data. A
APA, Harvard, Vancouver, ISO, and other styles
42

Franco, Maximilien. "Tracing back the cosmic history of galaxy formation with the large ALMA interferometer." Thesis, Université de Paris (2019-....), 2019. http://www.theses.fr/2019UNIP7012.

Full text
Abstract:
Le but de cette thèse a été de mieux comprendre l'histoire cosmique de la formation des galaxies grâce au plus grand sondage cosmologique réalisé avec l’interféromètre ALMA. Cette observation a été réalisée dans une région du ciel, le champ GOODS-Sud, qui bénéficie des observations les plus profondes du télescope spatial Hubble, des observatoires infrarouges Spitzer et Herschel, ainsi que des données de l’observatoire X Chandra et l’interféromètre radio VLA. Ces observations à 1.1mm avec ALMA complètent donc ce panorama multi-longueurs d’onde, et font de cette région du ciel un laboratoire de
APA, Harvard, Vancouver, ISO, and other styles
43

Deloule, Sybelle. "Développement d'une méthode de caractérisation spectrale des faisceaux de photons d'énergies inférieures à 150 keV utilisés en dosimétrie." Thesis, Paris 11, 2014. http://www.theses.fr/2014PA112273/document.

Full text
Abstract:
En dosimétrie, la distribution énergétique des photons émis par une source constitue un paramètre incontournable. Dans la gamme des basses et moyennes énergies (i.e. E&lt;150 keV ici), le LNHB possède 5 tubes à rayons X ainsi que des grains de curiethérapie à l’iode 125, présentant des hauts débits de fluence. La détermination du spectre émis par calcul (déterministe ou Monte-Carlo) est limitée, dans la gamme d’énergie considérée, par les incertitudes élevées sur les bases de données ainsi que par les approximations du modèle. La mesure directe avec un détecteur au germanium ultra-pur a donc é
APA, Harvard, Vancouver, ISO, and other styles
44

Moreira, Ana Sofia Pereira. "Study of modifications induced by thermal and oxidative treatment in oligo and polysaccharides of coffee by mass spectrometry." Doctoral thesis, Universidade de Aveiro, 2016. http://hdl.handle.net/10773/17074.

Full text
Abstract:
Doutoramento em Bioquímica<br>Os polissacarídeos são os componentes maioritários dos grãos de café verde e torrado e da bebida de café. Os mais abundantes são as galactomananas, seguindo-se as arabinogalactanas. Durante o processo de torra, as galactomananas e arabinogalactanas sofrem modificações estruturais, as quais estão longe de estar completamente elucidadas devido à sua diversidade e à complexidade estrutural dos compostos formados. Durante o processo de torra, as galactomananas e arabinogalactanas reagem com proteínas, ácidos clorogénicos e sacarose, originando compostos castanh
APA, Harvard, Vancouver, ISO, and other styles
45

Cai, Yimei. "Estimation of the seed dispersal distribution with genotypic data." 2007. http://purl.galileo.usg.edu/uga%5Fetd/cai%5Fyimei%5F200712%5Fphd.

Full text
APA, Harvard, Vancouver, ISO, and other styles
46

Yenish, Joseph P. "Effects of tillage on vertical distribution and viability of weed seed in soil." 1990. http://catalog.hathitrust.org/api/volumes/oclc/23662520.html.

Full text
Abstract:
Thesis (M.S.)--University of Wisconsin--Madison, 1990.<br>Typescript. eContent provider-neutral record in process. Description based on print version record. Includes bibliographical references (leaves 84-89).
APA, Harvard, Vancouver, ISO, and other styles
47

Chiu, Chia Wen, and 邱嘉雯. "Establishment Of Statistical Distribution Model Of Aflatoxins Contaminated In Seed-Fruit Chinese Medicines." Thesis, 2012. http://ndltd.ncl.edu.tw/handle/35876546920121908048.

Full text
Abstract:
碩士<br>亞洲大學<br>保健營養生技學系碩士班<br>100<br>The suitability of several theoretical distributions to predict the observed distribution of aflatoxin test results in seed-fruit Chinese medicines was investigated. To estimate the statistical distribution model of aflatoxins contaminated in seed-fruit Chinese medicines by using Monte-Carlo simulation. Once the performance of aflatoxin distribution plans can be predicted, we can be designed to reduce the risks of aflatoxins contaminated in seed-fruit Chinese medicines. The uncertainty and distribution information is used to develop a model that can evaluat
APA, Harvard, Vancouver, ISO, and other styles
48

Bethany, Huls. "Financial feasibility of investing in bulk soybean infrastructure: the case of an Evergreen Seed Agent." Thesis, 2018. http://hdl.handle.net/2097/38807.

Full text
Abstract:
Master of Agribusiness<br>Department of Agricultural Economics<br>Keith Harris<br>For an Evergreen Seed Agent, making the financial decision to invest in bulk infrastructure is a large capital investment and requires a great deal of considerations. This thesis determines the soybean sales volume required for an investment in bulk soybean infrastructure to become financially feasible. A total of 1,456 soybean sales data points were used to run a regression model. Based on the results of the regression model, a correlation was determined between those agents that have bulk soybeans and soybean
APA, Harvard, Vancouver, ISO, and other styles
49

Wren, L. Sarah. "Continental and regional distribution and abundance patterns of boreal cardueline finches : influences of conifer seed availability /." 2001.

Find full text
APA, Harvard, Vancouver, ISO, and other styles
50

Newediuk, Levi. "Microenvironment but not seed bank distribution affects plant competition on Richardson’s ground squirrel (Urocitellus richardsonii) mounds in Manitoba pastureland." 2016. http://hdl.handle.net/1993/31921.

Full text
Abstract:
Microsite disturbances – including mounds created by burrowing mammals – increase local plant community diversity by supporting unique species assemblages. I investigated whether Richardson’s ground squirrel (Urocitellus richardsonii) mounds support unique plant assemblages within five Manitoba prairie pastures, and explored the factors contributing to the plant assemblages documented. Richardson’s ground squirrel mounds supported unique species assemblages relative to bare-ground disturbances with removal of vegetation but no soil disturbance. These detectable shifts in plant community struct
APA, Harvard, Vancouver, ISO, and other styles
You might also be interested in the bibliographies on the topic 'Seed distribution' for other source types:
Journal articles Books
We offer discounts on all premium plans for authors whose works are included in thematic literature selections. Contact us to get a unique promo code!

To the bibliography