Dissertations / Theses on the topic 'Population maps'
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Zenger, Kyall Richard. "Genetic linkage maps and population genetics of macropods." Phd thesis, Australia : Macquarie University, 2002. http://hdl.handle.net/1959.14/47604.
Full textThesis (PhD)--Macquarie University, Division of Environmental and Life Sciences, Department of Biological Sciences, 2002.
Bibliography: leaves 136-157.
General introduction -- Molecular markers for comparative and quantitative studies in macropods -- Genetic linkage map construction in the tammar wallaby (M. eugenii) -- Intraspecific variation, sex-biased dispersal and phylogeography of the eastern grey kangaroo (M. giganteus) -- General discussion.
The analysis of DNA using molecular techniques is an important tool for studies of evolutionary relationships, population genetics and genome organisation. The use of molecular markers within marsupials is primarily limited by their availability and success of amplification. Within this study, 77 macropodid type II microsatellite loci and two type I genetic markers were characterised within M. eugenii to evaluate polymorphic levels and cross-species amplification artifacts. Results indicated that 65 microsatellite loci amplified a single locus in M. eugenii with 44 exhibiting high levels of variability. The success of crossspecies amplification of microsatellite loci was inversely proportional to the evolutionary distance between the macropod species. It is revealed that the majority of species within the Macropodidae are capable of using many of the available heterologous microsatellites. When comparing the degree of variability between source-species and M. eugenii, most were significantly higher within source species (P < 0.05). These differences were most likely caused by ascertainment bias in microsatellite selection for both length and purity. -- The production of a marsupial genetic linkage map is perhaps one of the most important objectives in marsupial research. This study used a total of 353 informative meioses and 64 genetic markers to construct a framework genetic linkage map for M. eugenii. Nearly all markers (93.7%) formed a significant linkage (LOD > 3.0) with at least one other marker. More than 70% (828 cM) of the genome had been mapped when compared with chiasmata data. Nine linkage groups were identified, with all but one (LG7; X-linked) allocated to the autosomes. Theses groups ranged in size from 15.7 cM to 176.5 cM, and have an average distance of 16.2 cM between adjacent markers. Of the autosomal linkage groups, LG2 and LG3 were assigned to chromosome 1 and LG4 localised to chromosome 3 based on physical localisation of genes. Significant sex-specific distortions towards reduced female recombination rates were revealed in 22% of comparisons. Positive interference was observed within all the linkage groups analysed. When comparing the X-chromosome data to closely related species it is apparent that it is conserved both in synteny and gene order. -- The investigation of population dynamics of eastern grey kangaroos has been limited to a few ecological studies. The present investigation provides analysis of mtDNA and microsatellite data to infer both historical and contemporary patterns of population structuring and dispersal. The average level of genetic variation across sample locations was exceedingly high (h = 0.95, HE = 0.82), and is one of the highest observed for marsupials. Contrary to ecological studies, both genic and genotypic analyses reveal weak genetic structure of populations where high levels of dispersal may be inferred up to 230 km. The movement of individuals was predominantly male-biased (average N,m = 22.61, average N p = 2.73). However, neither sex showed significant isolation by distance. On a continental scale, there was strong genetic differentiation and phylogeographic distinction between southern (TAS, VIC and NSW) and northern (QLD) Australian populations, indicating a current and / or historical restriction of geneflow. In addition, it is evident that northern populations are historically more recent, and were derived from a small number of southern eastern grey kangaroo founders. Phylogenetic comparisons between M. g. giganteus and M. g. tasmaniensis, indicated that the current taxonomic status of these subspecies should be revised as there was a lack of genetic differentiation between the populations sampled.
Mode of access: World Wide Web.
xv, 182 leaves ill
Kardos, Julian, and n/a. "Visualising attribute and spatial uncertainty in choropleth maps using hierachical spatial data models." University of Otago. Department of Information Science, 2006. http://adt.otago.ac.nz./public/adt-NZDU20060908.151014.
Full textJones, Jesse Jack. "Effects of Non-homogeneous Population Distribution on Smoothed Maps Produced Using Kernel Density Estimation Methods." Thesis, University of North Texas, 2014. https://digital.library.unt.edu/ark:/67531/metadc699888/.
Full textZidan, Adel. "Cellular automata for population growth prediction : Tripoli-Libya case." Thesis, Brunel University, 2015. http://bura.brunel.ac.uk/handle/2438/10541.
Full textYarrow, Stuart James. "Analysing the information contributions and anatomical arrangement of neurons in population codes." Thesis, University of Edinburgh, 2015. http://hdl.handle.net/1842/10453.
Full textLuisi, Pierre 1985. "Positive selection in humans : from singles to interaction maps." Doctoral thesis, Universitat Pompeu Fabra, 2014. http://hdl.handle.net/10803/286921.
Full textDesde el “Origen de las Especies” de Darwin a la reciente revoluci´on gen´omica, muchos bi´ologos han centrado su investigaci´on en la comprensi ´on de c´omo la selecci´on natural ha dado forma a la variabilidad entre y dentro de las especies. Aunque, los avances te´oricos y emp´ıricos han sido notables, la mayor´ıa de los mecanismos biol´ogicos que subyacen a las bases moleculares de la adaptaci´on biol´ogica a´un no est´an suficientemente esclarecidos. La visi´on seleccionista de adaptaci´on marc´o el sesgo de los estudios evolutivos hacia el an´alisis de genes individuales. La mayor´ıa de estudios publicados destinados a la detecci´on de la selecci´on positiva utilizando datos de polimorfismo o de divergencia se han realizado utilizando un gen candidato o un enfoque de exploraci´on gen´omica, como se describe en los dos primeros art´ıculos presentados en la presente tesis. Sin embargo, la evoluci´on de genes est´a muy condicionada por el contexto biol´ogico en el que cada gen realiza su funci´on intr´ınseca, siendo el fenotipo, y no el genotipo, su materia primaria. Por lo tanto, a fin de comprender la evoluci´on de genes, y en particular cuando se considera la evoluci´on adaptativa, es crucial reducir la brecha entre el genotipo y el fenotipo. Los genes y las prote´ınas no act´uan de manera aislada, sino que interact´uan entre s´ı con el fin de realizar una funci´on biol´ogica determinada. Por lo tanto, un marco prometedor al estudiar la selecci´on natural a nivel molecular seria considerar las redes de genes, como se describe en los dos ´ultimos art´ıculos de la presente tesis. Los an´alisis de los datos de polimorfismo gen´etico, tanto de los genes que componen la v´ıa de la insulina, c´omo de los todos los genes descritos en los mapas f´ısicos de interacci´on prote´ına-prote´ına tienen resultados muy sorprendentes: los genes que act´uan en el n´ucleo de ambas redes, teniendo as´ı m´as efecto sobre un determinado fenotipo o m´as efectos ple´otropicos dentro del organismo, tienen m´as probabilidades de ser el blanco de la selecci´on positiva reciente.
Rose, Nancy L. "Embedding Evolution: Exploring Changes in Students' Conceptual Development, Beliefs, and Motivations in a Population Ecology Unit." Ohio University / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1343774149.
Full textMontalvão, Christiane. "Composição social e distribuição espacial dos habitantes de Vila Rica na década de 1810." Universidade Federal de Juiz de Fora, 2015. https://repositorio.ufjf.br/jspui/handle/ufjf/262.
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O objeto desta dissertação é a distribuição demográfica do maior espaço urbano da capitania de Minas Gerais nos primeiros anos do século XIX – a capital da capitania de Minas Gerais, Vila Rica. As fontes sobre as quais se alicerçam esta pesquisa são principalmente o recenseamento da capitania de Minas Gerais de 1804 e o livro de tombos elaborado a partir de 1809. Quanto à metodologia, trata-se de um projeto que envolve o uso de ferramentas ligado aos Sistemas de Informação Geográfica (SIG), com o objetivo de contribuir para uma biografia do espaço.
The object of this work is the demographics of the largest urban space in the captaincy of Minas Gerais in the early years of the nineteenth century - the capital of the captaincy of Minas Gerais, Villa Rica. The sources upon which underpin this research are mainly the census of the captaincy of Minas Gerais 1804 and tumbles book drawn from 1809. As regards the methodology, it is a project that involves the use of tools linked to Systems Geographic Information System (GIS), in order to contribute to a biography of space.
Levine, Alexander V. "The Real Snowbirds of South Florida: Using Citizen Science to Assess the Ranges of South Florida's Overwintering Birdsh." FIU Digital Commons, 2018. https://digitalcommons.fiu.edu/etd/3769.
Full textKim, Hana. "Spatial Surveillance of Infectious Disease Intervention with Related Factors for a Population Living in Underserved Areas in sub-Saharan Africa." University of Cincinnati / OhioLINK, 2021. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1617108703543143.
Full textOrsi, Maia. "Population synthesis models for IMF studies." Thesis, Liverpool John Moores University, 2014. http://researchonline.ljmu.ac.uk/4525/.
Full textDoshi, Rushabh Ashok. "SELF-ORGANIZING MAPS FOR CLASSIFICATION AND PREDICTION OF NEMATODE POPULATIONS IN COTTON." MSSTATE, 2007. http://sun.library.msstate.edu/ETD-db/theses/available/etd-03312007-104040/.
Full textRIMIERI, PEDRO. "Organisation de la variabilite genetique de 991 populations de mais et interet pour l'amelioration du mais fourrage." Paris 11, 1990. http://www.theses.fr/1990PA112006.
Full textLöffler, Antje, Tobias Luck, Francisca S. Then, Claudia Sikorski, Peter Kovacs, Yvonne Böttcher, Jana Breitfeld, et al. "Eating behaviour in the general population." Universitätsbibliothek Leipzig, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-183210.
Full textScott, Susanne K. "Modeling Diabetes in the US Adult Population." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1274374033.
Full textREBOURG, CECILE. "Diversite genetique de populations europeennes et americaines de mais : analyse moleculaire et morphologique." Paris 11, 2000. http://www.theses.fr/2000PA112031.
Full textAro, Pertti. "Peptic ulcer disease in an adult population : the Kalixanda study : a population-based endoscopic study /." Stockholm, 2006. http://diss.kib.ki.se/2006/91-7140-986-6/.
Full textHeywood, Ben. "Investigations into the use of quantified Bayesian maximum entropy methods to generate improved distribution maps and biomass estimates from fisheries acoustic survey data /." St Andrews, 2008. http://hdl.handle.net/10023/512.
Full textRonget, Victor. "The relationships linking age and body mass to vital rates : a comparative perspective in birds and mammals." Thesis, Lyon, 2018. http://www.theses.fr/2018LYSE1304/document.
Full textIndividuals varies in terms of survival and reproduction. Most of those variations in vital rates can be linked to individual characteristics such as age or body mass. Demographic models were developed to make prediction on those trait-structured populations and are now often used to manage wild populations. However, the amount of data needed to perform those models is not available for every populations. To overcome this issue, I tried in my thesis to assess the general patterns for the relationships linking age and body mass to the vital rates in birds and mammals. By comparing relationship extracted in the literature, I was then able to assess the general effect of body or age on vital rates as well as the biological factor explaining the variation of those relationships between species and populations. I first assess how body mass influence vital rates in birds and mammals. I demonstrated the positive effect of offspring body mass on offspring survival and showed how the relative importance of each causes of mortality influence this relationship, with for instance a negative effect of the predation rate on the intensity of the relationship. I also showed that mother body mass is positively related to offspring body mass and that heavier mother are also more likely to reproduce. On a second part I focused on describing the relationship between age and survival for mammals. We built a database MALDDABA compiling all relationships linking vital rates to age for wild mammals from life tables reported in the literature. Using life table data compiled in the database I was able to demonstrate that females live on average longer than males in wild populations of mammals. I then critically assess the metrics of longevity and provide new insight to describe the relationship between mortality and age. With my thesis I provided new views on the uses of comparative approach to highlight the major factors influencing the population dynamic in the wild
Watkins, Laura Louise. "Tracer populations in the local group." Thesis, University of Cambridge, 2011. https://www.repository.cam.ac.uk/handle/1810/240582.
Full textLöffler-Wirth, Henry, Edith Willscher, Peter Ahnert, Kerstin Wirkner, Christoph Engel, Markus Löffler, and Hans Binder. "Novel anthropometry based on 3D-bodyscans applied to a large population based cohort." Universitätsbibliothek Leipzig, 2016. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-207844.
Full textLagerlund, Magdalena. "Factors affecting attendance at population-based mammography screening /." Stockholm, 2002. http://diss.kib.ki.se/2002/91-7349-061-x/.
Full textOkori, Patrick. "Population studies of Cercospora zeae-maydis and related Cercospora fungi /." Uppsala : Plant Biology and Forest Genetics, Swedish Univ. of Agricultural Sciences, 2004. http://epsilon.slu.se/a468.pdf.
Full textHagströmer, Maria. "Assessment of health-enhancing physical activity at population level /." Stockholm, 2007. http://diss.kib.ki.se/2007/978-91-7357-334-4/.
Full textHallier-Nader, Brigitte. "Les territoires de vie des 75 ans et plus à Paris : quel environnement urbain pour une qualité de vie durable ?" Phd thesis, Université Paris-Est, 2011. http://tel.archives-ouvertes.fr/tel-00693313.
Full textZancanaro, Paolo Orlando. "Deriva genética de caracteres quantitativos em milho." Universidade de São Paulo, 2016. http://www.teses.usp.br/teses/disponiveis/11/11137/tde-16062016-172533/.
Full textObtaining superior genotypes in plant breeding depends on the existence of genetic variability. The existence of representative germplasm collections and the use of appropriate sample size are essential for preserving allelic and genotypic frequencies, reducing loss of genetic variability and delaying genetic drift effects. This study aimed to evaluate the effects of genetic drift in quantitative traits in subpopulations of maize. The original populations used were BR-105 and BR-106, of which 10 subpopulations were obtained in each five successive sample cycles with reduced effective size, accounting 50 subpopulations for each original population that were subsequently selfed to generate an additional level of inbreeding. The treatments consisted in 10 samples of the original population, 10 samples of the selfed original population, 50 non selfed subpopulations obtained from the original population and 50 selfed subpopulations, accounting 120 treatments for each population evaluated separately. It was used the randomized block strip-plot design, in four environments with two replications. The traits assessed were grain yield (GY), prolificacy (PROL), ear length and ear diameter (EL and ED), number of rows per ear (NRE), kernel-row number (KRN), plant and ear height (PH and EH), days to anthesis and silking (DA and DS), and number of tassel branches (NTB). It was estimated the effects of genetic drift between subpopulations means at both inbreeding levels, and the effect of the inbreeding depression in subpopulations within cycles. It was also performed linear regression analysis for subpopulations at both levels of inbreeding separately and together. A large variation was observed in the subpopulations means over cycles, indicating that genetic drift caused differentiation between them, and that they differed from the original populations. The effects of genetic drift were significant for all traits in the non selfed subpopulations, especially for GY, which is more sensitive to genetic drift effects by having a greater degree of dominance than the other traits. There was a decrease in the number of significant genetic drift estimates for selfed populations, including changes in magnitude and signs, compared to the non selfed populations. GY, KRN, DA and DS had higher number of significant inbreeding depression estimates than the other traits. Linear regression analysis explained most of the variation found with increasing homozygosity. As BR-105 and BR-106 populations have distinct genetic structures, they showed different performances regarding the effects of genetic drift. Therefore, genetic drift interferes in the genetic integrity of populations and it is important to consider its effect on the collection and maintenance of germplasm banks and populations used in plant breeding.
Saxlin, T. (Tuomas). "Periodontal infection and obesity—results of a population-based survey." Doctoral thesis, Oulun yliopisto, 2012. http://urn.fi/urn:isbn:9789514299254.
Full textTiivistelmä Tämän tutkimuksen tarkoituksena oli selvittää lihavuuden ja parodontaali-infektion välisen yhteyden luonnetta sekä statiinien käytön yhteyttä parodontaali-infektioon. Tutkimus perustui kansalliseen Terveys 2000 -tutkimukseen, jonka toteutti Terveyden ja hyvinvoinnin laitos (entinen Kansanterveyslaitos) vuosina 2000 ja 2001. Artikkeli I perustui 396 hampaalliseen henkilöön, jotka olivat ei-diabeetikkoja, 30–59-vuotiaita, eivät koskaan olleet tupakoineet sekä olivat osallistuneet suunterveyden seurantatutkimukseen neljä vuotta myöhemmin. Artikkeli II perustui 2784 hampaalliseen henkilöön, jotka olivat ei-diabeetikkoja, 30–49-vuotiaita eivätkä olleet koskaan tupakoineet. Artikkeli III perustui 425 hampaalliseen henkilöön, joilla ei ollut diabetesta tai reumaa, olivat 45–64-vuotiaita, eivät koskaan olleet tupakoineet ja olivat osallistuneet Terveys 2000 -tutkimuksen täydentäviin tutkimuksiin. Artikkeli IV perustui 1297 hampaalliseen henkilöön, jotka olivat ei-diabeetikkoja, 30–49-vuotiaita eivätkä olleet koskaan tupakoineet. Artikkeli V perustui 2032 hampaalliseen henkilöön, jotka olivat ei-diabeetikkoja, ei-reumaatikkoja, 40–69-vuotiaita, jotka olivat hampaallisia eivätkä tupakoineet. Tutkimuksen aineisto kerättiin kotihaastattelusta, kyselyistä, kliinisestä tutkimuksesta sekä laboratoriomittauksista. Korkean painoindeksin todettiin olevan yhteydessä uusien ientaskuhampaiden ilmaantumiseen seurannan aikana. Toisaalta ientaskuhampaiden esiintymisen todettiin olevan yhteydessä lihavuuteen altistus-vastesuhteen mukaisesti. Seerumin IL-6 pitoisuuden todettiin olevan yhteydessä ientaskuhampaiden lukumäärään, mutta seerumin TNF-α-, triglyseridi-, LDL-kolesteroli- tai HDL-kolesterolipitoisuudella ei todettu yhteyttä ientaskuhampaiden lukumäärään. Statiinien käytön todettiin olevan käänteisesti yhteydessä ientaskuhampaiden lukumäärään henkilöillä, joilla oli näkyviä merkkejä ikenen inflammaatiosta. Henkilöillä, joilla ei ollut näkyviä merkkejä inflammaatiosta, statiinien käyttö oli yhteydessä suurentuneeseen todennäköisyyteen ientaskuhampaiden esiintymiseen. Tämän tutkimuksen tulokset tukevat käsitystä, että lihavuus voi olla kausaalisesti yhteydessä parodontaali-infektion kehittymiseen, mutta ei puolla käsitystä, että sitä voitaisiin pitää merkittävänä riskitekijänä. On myös mahdollista, että lihavuuden ja parodontaali-infektion välillä on kaksisuuntainen yhteys. Tämän tutkimuksen tulosten mukaan on mahdollista, että kohonnut seerumin IL-6 pitoisuus voi välittää lihavuuden yhteyden parodontaali-infektioon. Tutkimuksen tulosten mukaan on myös mahdollista, että statiineista voi olla hyötyä osana parodontaalihoitoa
Breithaupt, Peter G. "Validation of Cardiorespiratory Fitness and Body Composition Assessment Methodologies in the Obese Pediatric Population." Thèse, Université d'Ottawa / University of Ottawa, 2011. http://hdl.handle.net/10393/20363.
Full textMaurer, Hans Peter. "Development and applications of Plabsoft a computer program for population genetic data analyses and simulations in plant breeding /." [S.l. : s.n.], 2008. http://nbn-resolving.de/urn:nbn:de:bsz:100-opus-2736.
Full textMcFarland, Chelsea Clay. "HYBRID, ROW WIDTH, AND PLANT POPULATION EFFECT ON CORN YIELD IN KENTUCKY." UKnowledge, 2013. http://uknowledge.uky.edu/pss_etds/21.
Full textNurse, Monique M. "Built Environments and Childhood Obesity Epidemic in the Immigrant Population." ScholarWorks, 2019. https://scholarworks.waldenu.edu/dissertations/7497.
Full textOctober, Firzana. "Proteomic and SNP analysis of the Cadherin 10 type-II (CDH10) gene, in the South African autistic population." University of the Western Cape, 2013. http://hdl.handle.net/11394/4826.
Full textAutism or autism spectrum disorder (ASD) is a very diverse neurological disorder that manifests specifically in children and infants between the ages of two to three years of age. An individual suffering is deemed as autistic and individuals suffering would be classed under the banner of ASD. It is observed that sufferers have impairment in their social and interactive skills. It has both genetic and environmental factors that contribute to its diversity and although the primary cause of autism is still unclear, scientist are investigating both factors. In this study we aimed to investigate the molecular genetics of autism in the South African (SA) population. This was done in two parts, a genetic association study and afunctional genomics (proteomic study). An association study of the 2 single nucleotide polymorphisms (SNPs) of the Cadherin 10 type II gene (CDH10) (rs4307059 and rs4327572) was investigated in the SA healthy and autistic population. The proteomic approach was used to determine the differential expression of genes of the healthy population and compared to the autistic population of African descent. In both parts of the project, objectives were achieved. The SNPs were successfully genotyped however no association was determined for autism in the SA population. The urine protein profiles with 1 dimensional (1D) and 2dimensional (2D) Sodium Dodecyl Sulfate-Poly Acrylamide Gel Electrophoresis (SDSPAGE)generated in this study has revealed the following proteins, Uromodulin, Vitelline membrane outer layer protein homologue, kinninogen-1, Alpha-1-Antitrypsin, Ig Kappa chain region C, and CD59 glycoprotein that require further investigation. The results indicated that six of the identified proteins were expressed in both groups but were found to be either quantitatively or statistically significant. However, a statistically significant difference was observed in the expression of one protein (Uromodulin) which was observed to be expressed in the healthy group but absent in the experimental group. However further investigation is required validation of these findings.
CUNHA, KELLY de P. "Aplicação de mapas auto-organizáveis na classificação de aberrações cromossômicas utilizando imagens de cromossomos humanos submetidos à radiação ionizante." reponame:Repositório Institucional do IPEN, 2015. http://repositorio.ipen.br:8080/xmlui/handle/123456789/23828.
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Dissertação (Mestrado em Tecnologia Nuclear)
IPEN/D
Instituto de Pesquisas Energeticas e Nucleares - IPEN-CNEN/SP
Figuet, Emeric. "Impact génomique des stratégies d'histoire de vie et reconstruction de traits ancestraux chez les amniotes." Thesis, Montpellier, 2015. http://www.theses.fr/2015MONTS101/document.
Full textUnderstanding the reciprocal influence between genotype and phenotype has been a long-standing goal of modern biology. Many aspects of evolution at the molecular level are well known to respond to demographic or life history characteristics of species. In particular, the nearly-neutral theory postulates that small populations accumulate a heavier load of slightly deleterious substitutions in their genome as a result of increased genetic drift. Base composition has also been shown to reflect the influence of macroscopic parameters through the mechanism of GC-biased gene conversion. However, the development and empirical validation of these theories are mostly based on a restricted diversity of organisms, in which mammals stand as a major contributor. In this thesis, using a comparative approach and tens of transcriptomes, we aimed at extending to Amniota our understanding of the determinants of molecular evolutionary patterns. With the incorporation of all clades of reptiles, we confirmed the major role of the effective population size on species ability to purge deleterious amino-acid changes, while revealing a paradoxical response of the dN/dS ratio in birds, raising a stimulating enigma. The biased gene conversion also emerged as the main driver of coding sequence GC content in vertebrates, including reptiles and fishes, whose genomic homogeneity had kept its signal hidden for long. In parallel, the relations between life-history traits and molecular parameters have enabled us to investigate and make progress in the field of ancestral body mass reconstruction. We focused on the Cetartiodactyla order, a group which is mainly characterized by large extant species (such as camel, giraffe or whales). The combined analysis of the yet untested mitochondrial marker and nuclear genes, including 21 newly sequenced transcriptomes, testified in favor of the singular result of a small cetartiodactyl ancestor, in agreement with the palaeontological record, demonstrating the strong potential of DNA sequences to reveal the past of organisms
Woodress, Frederick A. "The impact of the media on the elderly (over 60) population in America's middletown." Virtual Press, 1989. http://liblink.bsu.edu/uhtbin/catkey/720407.
Full textGonçalves, Marcio Leandro. "Desempenho agronômico de híbridos de milho em função de espaçamentos e densidades populacionais em três locais." Universidade Estadual do Oeste do Paraná, 2008. http://tede.unioeste.br:8080/tede/handle/tede/1342.
Full textCoordenação de Aperfeiçoamento de Pessoal de Nível Superior
A study was conducted with the objetive to evaluate the effect of spacing between the plantation rows (0.45, 0.68 and 0.90 m) on plants population density of (50.000, 60.000, 70.000 and 80.000 plants ha-¹) about the grain productivity of three hibrid corn (Zea mays L.) A field experiment was conducted from September 10 to April 10/2008 in three different environments with different height, in Goioerê, Toledo and Cascavel localized in the west of Parana State. The design utilized was of randomized blocks into subdivided parcels. The spacing were placed in the main parcel and the population density and hybrids in sub parcels in a factorial schema. Biometric variables such as plant height, height of insertion of the first spike and diameter of stem and the components of production, number of rows, number of grains per spike, mass of grains per spike, the mass spike and productivity, were evaluated. Was no effect of row spacing, obtaining the maximum grain yield with the spacing of 0.57 m between rows, regardless of location. There was positive interaction between the environmental effect of plant population. The positive response to the increase of population in the Toledo plant was directly related to the level of soil fertility. In Cascavel Goioerê and no significant difference to the increase in population from 50,000 to 80,000 plants ha-1. In all locations the hybrid AS 1570 showed higher productivity of hybrid AS 1565 and AS 1575
Com objetivo de avaliar o efeito do espaçamento entre linhas de plantio (0,45; 0,68 e 0,90 m), sob quatro densidades populacionais (50.000, 60.000, 70.000 e 80.000 plantas ha-1), sobre a produtividade de grãos de três híbridos de milho ( Zea mays L.) em três ambientes com diferentes altitudes, foram conduzidos experimentos de campo nos municípios de Goioerê, Toledo e Cascavel, ambos no estado do Paraná na região oeste no período de 10 de setembro de 2007 a 10 de abril de 2008. O delineamento utilizado foi de blocos ao acaso dispostos em parcelas subdivididas. Os espaçamentos foram alocados na parcela principal e as densidades populacionais e híbridos nas subparcelas no esquema fatorial. Foram avaliadas as variáveis biométricas: altura de planta, altura de inserção da primeira espiga e diâmetro de colmo e os componentes da produção: número de fileiras, número de grãos por espiga, massa de grãos por espiga, massa de espiga e produtividade. Houve efeito do espaçamento entre linhas, obtendo o máximo rendimento de grãos com o espaçamento de 0,57 m entre linhas, independente do local. Houve interação positiva entre ambientes ao efeito de população de plantas. A resposta positiva ao aumento de população de plantas de Toledo foi diretamente relacionado ao nível de fertilidade do solo. Em Goioerê e Cascavel não houve diferença significativa ao aumento de densidade populacional de 50.000 a 80.000 plantas ha-1. Em todos os locais o híbrido AS 1570 apresentou produtividade superior aos híbridos AS 1565 e AS 1575
Geha, Marla, Risa H. Wechsler, Yao-Yuan Mao, Erik J. Tollerud, Benjamin Weiner, Rebecca Bernstein, Ben Hoyle, et al. "The SAGA Survey. I. Satellite Galaxy Populations around Eight Milky Way Analogs." IOP PUBLISHING LTD, 2017. http://hdl.handle.net/10150/625799.
Full textSaylor, Dicy, Sebastien Lepine, Ian Crossfield, and Erik A. Petigura. "Light-curve Modulation of Low-mass Stars in K2. I. Identification of 481 Fast Rotators in the Solar Neighborhood." IOP PUBLISHING LTD, 2017. http://hdl.handle.net/10150/626405.
Full textTesfaye, Fikru. "Epidemiology of cardiovascular disease risk factors in Ethiopia : the rural-ruban gradient." Doctoral thesis, Umeå : Univ, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-1543.
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Full textJahn, Michael. "Characterization of population heterogeneity in a model biotechnological process using Pseudomonas putida." Doctoral thesis, Universitätsbibliothek Leipzig, 2015. http://nbn-resolving.de/urn:nbn:de:bsz:15-qucosa-178424.
Full textHAMAJIMA, NOBUYUKI, HIROTAKA MATSUO, KENJI WAKAI, EMI MORITA, GUANG YIN, SAYO KAWAI, RIEKO OKADA, MARIKO NAITO, and SHINO SUMA. "ASSOCIATIONS BETWEEN BODY MASS INDEX AND SERUM URIC ACID LEVELS IN A JAPANESE POPULATION WERE SIGNIFICANTLY MODIFIED BY LRP2 rs2544390." Nagoya University School of Medicine, 2014. http://hdl.handle.net/2237/20552.
Full textHainzelin, Étienne. "Amelioration du rendement et de la tolerance aux densites elevees de deux populations tropicales elites de mais par introgression de materiels exotiques." Rennes, Agrocampus Ouest, 1998. http://www.theses.fr/1998NSARC046.
Full textNafziger, Anne. "A population perspective on obesity prevention : lessons learned from Sweden and the U.S." Doctoral thesis, Umeå : Umeå University, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:umu:diva-893.
Full textKark, Malin. "Population-based studies of body mass index, overweight and systolic blood pressure among Swedish young men /." Stockholm, 2002. http://diss.kib.ki.se/2002/91-7349-279-5.
Full textDahlgren, Johan Petter. "Linking plant population dynamics to the local environment and forest succession." Doctoral thesis, Stockholms universitet, Botaniska institutionen, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:su:diva-8291.
Full textSherrock, Kaitlyn. "Analysis of Potential Risk Factors of Metabolic Syndrome in a Pediatric Population Comparing Normal Weight and Overweight Subjects." Wittenberg University Honors Theses / OhioLINK, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=wuhonors1338495751.
Full textTynell, Elsa. "Prevention of transfusion transmitted infections : donor screening and characteristics of recipient populations /." Stockholm, 2005. http://diss.kib.ki.se/2005/91-7140-287-X/.
Full textEdelen, Delores. "EXPLAINING CHURN: MASS SOCIETY, SOCIAL CAPITAL, & COMMUNITY CHURN." Master's thesis, University of Central Florida, 2004. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/3054.
Full textM.A.
Department of Sociology and Anthropology
Arts and Sciences
Applied Sociology
Matos, Tiago Manuel Ferreira Lopes Guerreiro de. "Evolução das populações de Tuta absoluta (Meyrick) e meios de protecção em ambiente empresarial vocacionado para exportação." Master's thesis, ISA/UTL, 2011. http://hdl.handle.net/10400.5/3907.
Full textTuta absoluta (Meyrick) represents, nowadays, a serious threat to tomato crops, either protected or open field crops, which is a sector of vital importance in the Mediterranean basin and, therefore, in Portugal too. As it usually happens in case of exotic invasive pests, the lack of knowledge about its biology, behaviour and effective control measures generates a period of uncontrolled balance of the pest with serious outbreaks or, in many cases, the adoption by growers of highly undesirable strategies. The present work intends to partially address to the challenges presented by that lack of knowledge, exploring the pest behaviour in greenhouse tomato crops and testing different pest control measures. All the essays were carried out in a Portuguese company totally focused on growing tomatoes to the English market, one of the most demanding markets in the world. Nowadays, production companies need a lot of certification schemes to be able to sell their agricultural goods in those markets. Many of those certifications are brand specific, for each supermarket, and almost all of them are related with good agricultural practices which guarantee food security and biodiversity preservation. These subjects are growing concerns for consumers and growers must be able to reach such level of demanding, while they are also obliged to fulfil quality standards and innovation in their products. With these concerns in mind and the need for picking tomatoes every week from October to June, this company´s strategy for T. absoluta, such as for other pests, must include biological control and the use of pesticides from natural origin. When necessary, synthetic pesticides are applied but those must have a short harvest interval. The fulfilment of this and other rules will always be essential to the success of this particular company, as it will be for Portuguese agricultural companies in general if they want to successfully sell quality products in foreign markets and contribute to the increase of the country´s export revenue. T. absoluta females seemed to prefer laying their eggs in the top section of tomato plants, inducing a large number of mines in the section immediately below that area. These mines tend to be abandoned at a later stage of the larval development. Those larvae moved then to immature fruits or leaves in the bottom part of the plant. The existence of eggs and young larvae in the top of the plants justifies the presence of Nesidiocoris tenuis adults in that area, actively searching for preys and, therefore, reducing the overall T. absoluta damage. This mirid can be considered, consequently, a v good biological control agent of T. absoluta. However, in the absence of a suitable prey, N. tenuis can become a tomato plants pest himself, as it was observed. The deliberate releases of this mirid in crops must be carefully evaluated and its spontaneous presence should be regularly monitored. The use of nets at the top windows of the studied greenhouses seemed to delay the appearance of T. absoluta in the crop, especially if proper isolation measures were carried out. Net´s beneficial effect should be confronted with consequences on the greenhouse environment and significant economic effort demanded for application of this devices. Another possible way to avoid the pest residence inside greenhouse is the elimination of the falling pupae, which tend to remain in the soil or under soil covers. In situations where a pesticide application is necessary, spinosade a.i. must be considered, given the promising results presented. Its registration for the control of this pest should be considered. It will be also very useful to perform field trials with a.i. recently registered, for T. absoluta control. After reducing this pest’s populations to very low numbers, either through pesticide applications or mirid´s predation mechanisms, regular applications of Bacillus thuringiensis, a biopesticide, contributed to delay the recovery of those populations. Under such circumstances, possible development of resistance must be considered and evaluated. The application of other preventive strategies, such as the introduction of the egg parasitoid Trichogramma achaeae, could also have an interesting effect on the pest development. In this case, its real efficiency on T. absoluta will have to be studied in detail still, given the remaining doubts on its efficacy, especially if we consider the highest recommended release rates. If its effectiveness is demonstrated, a proper way of supplying this beneficial insect with good quality standards to Portuguese growers from producing companies will have to be guaranteed. Water traps for mass trapping, which combine the attractive effect of sexual pheromone and light, captured higher levels of T. absoluta adults than the traditional ones, with pheromone bait only. However, this traps seemed unable to capture females of T. absoluta, an expected event due to the light effect. This lack of female captures makes it hard to justify their use, considering its high cost compared with traditional water traps