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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Cyathus (Basidiomycota): relações filogenéticas de espécies do Nordeste brasileiro

SILVA, Maria Aparecida 15 March 2012 (has links)
Submitted by Haroudo Xavier Filho (haroudo.xavierfo@ufpe.br) on 2016-02-26T16:26:29Z No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) dissertacaofinal19ABR12.pdf: 6509323 bytes, checksum: 3ea20960f438629f3ce90be45103b653 (MD5) / Made available in DSpace on 2016-02-26T16:26:29Z (GMT). No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) dissertacaofinal19ABR12.pdf: 6509323 bytes, checksum: 3ea20960f438629f3ce90be45103b653 (MD5) Previous issue date: 2012-03-15 / CAPES / O gênero Cyathus Haller: Pers., junto com mais quatro gêneros, formou, por muito tempo, um grupo conhecido como “Bird’s nest fungi” devido a morfologia cônica com estrutura lenticulares em seu interior, lembrando ovos em seus ninhos. Os estudos morfológicos, durante muito tempo, forneceram a base para as diferentes construções de classificação infragenérica e, como muitas espécies se diferenciavam de forma tênue, isso gerava muita polêmica. Sequências de DNA vêm sendo usadas para esclarecer melhor a história evolutiva do grupo. No Brasil, o grupo é pouquíssimo estudado, de forma que mais trabalhos envolvendo a união da taxonomia molecular com a tradicional são necessários para uma melhor compreensão do gênero. Assim, o presente trabalho teve como objetivos inferir a filogenia de espécimes de Cyathus oriundas do nordeste brasileiro e, com a associação dos caracteres morfológicos, propor uma classificação melhor para o táxon. Para isso, foram examinadas 46 exsicatas, das quais seis eram do herbário JPB, cinco do Herbário HUEFS e 37 do herbário de Fungos UFRN, sendo que este último apresenta o maior número de exsicatas de Cyathus no Nordeste, somando um total de 19 espécies. Dos 46 espécimes, 33 foram utilizados para extração de DNA, resultando no sequenciamento da região ITS de seis espécies e da região LSU de oito espécies. As árvores filogenéticas mostram que essas espécies se encontram em clados separados das demais espécies oriundas de regiões não tropicais, no entanto, não altera a topologia geral dos principais clados sugeridos em trabalhos anteriores. De acordo com os estudos taxonômicos tradicionais, temos duas espécies que constituem segundo registro para o mundo: C. pedicelatus e C. setosus; uma primeira referencia para o Brasil de C. olivaceobrunneus, e a primeira referência para o Nordeste de C. bekerleyanus. A análise dos dados moleculares aponta para a delimitação de cinco novas espécies para a ciência. Todas as sequências de DNA geradas foram depositadas no GenBank e são novas para o banco de dados. / The genus Cyathus Haller: Pers., together with other four genera, formed a group known as bird's nest fungi due to their conic morphology with lenticular structures inside resembling bird’s eggs in their nests. Morphological studies, for a long time, provided the basis to the different constructions of infrageneric classification and, as many species differed weakly from one another, that generated much controversy. DNA sequences have been used to better clarify the evolutionary history of the group. In Brazil, the group is as yet poorly studied, hence, more work involving the union of the traditional and molecular taxonomy is needed for better understanding of the genus. Therefore, this work had the objectives of inferring the phylogeny of specimens of Cyathus from the Brazilian Northeast and, in association with morphological characters, to propose a better classification for the taxon. Forty six exsiccates were examined, being six from JPB herbarium, five from HUEFS herbarium and 37 of UFRN-Fungos herbarium. The latter has the largest number of exsiccates of this genus in the Northeast, totaling 19 species. Thirty-three specimens were chosen for DNA extraction, resulting in the sequencing of the ITS region of six species and the LSU region of eight species. The phylogenetic trees show that these species sampled in this work are positioned in clades separated from those reported from non-tropical regions, however, this does not change the general topology of the main clades suggested in the works published previously. According to the traditional taxonomy studies we have two species that constitute the second record to the world, C. pedicelatus and C. setosus; one first record to Brazil, C. olivaceobrunneus; and one first record to the Northeast region of C. bekerleyanus. Analysis of the molecular data suggests five new species to Science. All DNA sequences of the tropical species sampled were deposited in the GenBank and are new records for the database.
2

Využití družicových dat vysokého časového rozlišení k určení spektrálních vlastností vegetace / High temporal satellite data assimilation for vegetation spectral characteristic assignment

Malíková, Lucie January 2010 (has links)
The application of high temporal satellite image data for designation of the spectral characteristic of vegetation Abstract The objektive of this paper is to evaluate possibilities of high temporal satellite data assimilation for continuous monitoring of the spectral characteristic of vegetation. There is also given the suggestion of metodology for processing MERIS data and for continuous monitoring of spectral characteristic of landscape objects. Finally, vegetation cover database for the Czech Republic in the year 2009 is created from sectorial analysis. In the paper there is used the LSU classification and thresholding of vegetation indicies histograms. The universal decision algorithm for classification of vegetation landscape component are described and particular thresholding values for the year 2009 given. The finally product of this paper is Czech vegetation cover database for the year 2009 with overall accuracy of 63,35 %. Accuracy for forest is even over 80 %. Keywords: remote sensing, MERIS, vegetation, spectral reflectance, LSU, BEAM
3

The performance of LOGCAP in Operations Enduring and Iraqi Freedom / Performance of Logistics Civil Augmentation Program in Operations Enduring and Iraqi Freedom

Neeb, Michael S. 12 1900 (has links)
Approved for public release, distribution is unlimited / The purpose of this study is to examine the role of the LOGCAP Logistics Support Unit (LSU) in Southwest Asia during the early stages of Operations Enduring and Iraqi Freedom. The study provides a summary of the LSU makeup, their roles, training and their processes and procedures. The study goes on to analyze the impact of the training and processes and procedures on the mission of the LSU and changes that were made during their deployment. Evidence is provided to demonstrate the difficulties the LSU encountered as a result of role confusion and inadequate training. The empirical data presented shows a correlation between role confusion and inadequate training as the cause of extended timelines and numerous changes to efforts undertaken to meet U.S. Military needs. The research then outlines the improvements that were attempted as well as the results of their implementation. In conclusion, the study provides conclusions based upon the analysis and presents three recommendations for improving the LSU to ensure the next deployment of the LSU to large-scale contingency leverages the lessons learned from this experience. Review and analysis of empirical data gathered from December 2002 through May 2003, interviews with LSU members, and General Accounting Office (GAO) audit reports provided the basis for this study / Civilian, United States Army
4

Umbrella Organizations, Identity and Political Advocacy : A Process Tracing of Identity Management in The National Council of Swedish Youth Organisations

Almqvist, Oscar January 2019 (has links)
No description available.
5

Myxozoa Grass?, 1970 (Cnidaria: Myxosporea): Sinopse das esp?cies parasitando peixes nas Am?ricas e diagn?stico morfol?gico e molecular das esp?cies parasitando Characiformes, Leporinus friderici (Anostomidae) e Astyanax altiparanae (Characidae) oriundos do rio Mogi Gua??, S?o Paulo, Brasil / Myxozoa Grass?, 1970 (Cnidaria: Myxosporea): Synopsis of species parasiating fish in the Americas and morphological and molecular diagnosis of species parasiating Characiformes species, Leporinus friderici (Anostomidae) and Astyanax altiparanae (Characidae) from the Mogi Gua?? River, S?o Paulo, Brazil

VIDAL, Let?cia Gabriela Poblete 08 March 2017 (has links)
Submitted by Jorge Silva (jorgelmsilva@ufrrj.br) on 2017-08-22T19:39:56Z No. of bitstreams: 1 2017 - Let?cia Gabriela Poblete Vidal.pdf: 2525390 bytes, checksum: 162c0cfed2f6b4d8e94cb85c1c0254da (MD5) / Made available in DSpace on 2017-08-22T19:39:56Z (GMT). No. of bitstreams: 1 2017 - Let?cia Gabriela Poblete Vidal.pdf: 2525390 bytes, checksum: 162c0cfed2f6b4d8e94cb85c1c0254da (MD5) Previous issue date: 2017-03-08 / CNPq / The hope of this study was increased the knowledge of biodiversity of myxozoan fish parasites, unknown to some groups. In chapter 1, the goal was provide a synopsis of Myxozoa Grass?, 1970 species in the Americas based on records of the valid species of myxozoans (Myxozoa: Myxosporea) described in the Americas is provided based on a comprehensive survey of the literature since 1893, when the first myxozoan species was reported, until December 2015. The synopsis include the habitat of the host, site of the infection of the parasite, locality, size (?m or mm) and form of the plasmodia, spore measurements, provide specimens to parasitological collections, molecular data and explicit linkage of host. This synopsis was based on original descriptions. In chapter 2, the present work complements the original description of H. friderici Casal Matos and Azevedo, 2003 with new morphological and molecular data with Gill filaments on Leporinus friderici (Bloch, 1794) from the Mogi Gua?? River, state of S?o Paulo. Finaly, in chapter 3, specie of Henneguya was found in the kidneys of Astyanax altiparanae (Characiformes: Characidae) and were analyzed by morphological and molecular studies with analysis of the rDNA of the small subunid of the ribosome (18S). These data identify a new species of Myxozoa. / O presente trabalho teve como objetivo ampliar os conhecimentos sobre a biodiversidade de mixospor?deos parasitos de peixes, visto o escasso conhecimento para esse grupo. No cap?tulo 1 o objetivo foi fornecer uma sinopse de esp?cies de Myxozoa Grass?, 1970 nas Am?ricas com base em um levantamento bibliogr?fico desde 1893, quando a primeira esp?cie de myxospor?deo foi descrita, at? dezembro de 2015. A sinopse inclui uma lista parasito-hospedeiro com dados sobre o habitat do hospedeiro, s?tio de infec??o, localidade, tamanho e formato do cisto, medidas dos esporos e esp?cimes em cole??es e uma lista de parasitos-hospedeiros. Nessa sinopse s?o relatados somente as descri??es originais encontradas nas Am?ricas. No cap?tulo 2, ? inclu?da uma descri??o de H. friderici Casal, Matos e Azevedo, 2003 com novos dados morfol?gicos e moleculares com material proveniente de amostras de filamentos branquiais de Leporinus friderici (Bloch, 1794) do rio Mogi Gua??, estado de S?o Paulo. Finalmente, no cap?tulo 3, uma esp?cie de Henneguya encontrada nos rins de Astyanax altiparanae (Characiformes: Characidae) foi descrita e ilustrada com base na sua morfologia e na an?lise do rDNA da subunidade maior do ribossomo (28S). Estes dados identificam uma poss?vel esp?cie nova de Myxozoa.
6

Phylogeny and Taxonomy of Polyblastia and allied taxa (Verrucariaceae)

Savić, Sanja January 2007 (has links)
Polyblastia A. Massal. is a genus of lichenized fungi belonging to Verrucariaceae (Ascomycota). Traditional classification heavily rested on a few cardinal characters, primarily ascoma structure and spore morphology, but the delimitation of Polyblastia was problematic. Using DNA sequences from nucLSU, and RPB1 the position of the ‘Polyblastia group’, as a strongly supported clade within Verrucariaceae, was confirmed. A three marker phylogeny (including nucITS) based on a wide taxon sampling reveals strongly supported clades within the ‘Polyblastia group’. Thus Polyblastia s.str. is recognized. The phylogeny of the strongly supported Thelidium clade is not completely resolved. In a different clade, Verrucaria rupestris, the type of Verrucaria, is a sister to the Henrica melaspora/H. theleodes clade. Trimmatothele perquisita, the type of Trimmatothele, forms a strongly supported group with a Verrucaria species. The genus Sporodictyon, until recently included in Polyblastia, is resurrected. Species delimitation in Sporodictyon is investigated, and the morphological variation within and between the monophyletic groups is evaluated in an effort to reconcile morphological and molecular data. A taxonomic revision of Sporodictyon, occurring in Northern Europe and the adjacent Arctic is provided, and two new species are described. A comprehensive material is investigated, a key to the species is provided. A generic revision of the family Verrucariaceae, based on recent molecular phylogenetic analyses and previous morphological studies, is offered. Three new genera (Hydropunctaria, Parabagliettoa and Wahlenbergiella) are proposed. Several other monophyletic groups are identified for which the taxon sampling is insufficient for proposing taxonomic changes. The nomenclature of the genera in the family is revised, including the study of type materials and several lectotypifications are suggested. The new genus Atla (Verrucariaceae) is described, and three new species to science, A. alpina, A. palicei and A. praetermissa, are included. An identification key to the species and a revision of the genus is supplied.
7

Systematika rodu Ramariopsis (Basidiomycota, Clavariaceae) ve střední Evropě / Systematics of the genus Ramariopsis (Basidiomycota, Clavariaceae) in central Europe

Matouš, Jan January 2017 (has links)
The genus Ramariopsis (Clavariaceae, Agaricales) having ramarioid, rarely clavarioid basidiomata includes about 15 species in central Europe. They are probably saprotrophic species which usually occur in grasslands or rarely open places in shrubs or deciduous forests. In this work, 88 collections of this genus mainly from the Czech Republic and Slovakia were studied, of which 57 sequences from the LSU and 36 from the ITS regions of the nuclear ribosomal RNA gene complex were obtained. Based on molecular-phylogenetic analyses using the maximum likelihood and bayesian methods, phylogenetic trees were created showing 16 well-supported clades. So detailed study on the phylogeny and relationships among species of the genus Ramariopsis is presented for first time, even within the world literature. Subsequent morphological analysis supported by SEM study of basidiospores showed that obtained clades represent nine species known in taxonomic literature, three so far non-described species (that were labelled with provisional names) and four clades whose interpretation is uncertain at the moment. Thus, seven clades represent cryptic diversity, which is a rather high extent. A new species Ramariopsis robusta Matouš et Holec has already been published and Ramariopsis rufipes and Ramariopsis kunzei var. bispora...
8

Phylogenetic Studies in Usnea (Parmeliaceae) and Allied Genera

Articus, Kristina January 2004 (has links)
This thesis deals with the phylogeny of the lichen genus Usnea (Parmeliaceae, Ascomycetes). The relationships and the morphological variation among Usnea species has been studied, as well as the relationship of Usnea to allied genera. Two species, U. florida and U. subfloridana, which earlier were regarded to form two separate species have been synonymized. In an analysis based on sequence data these two taxa formed a monophyletic group of intermixed specimens. Usnea florida and U. subfloridana have earlier been regarded to form a species pair, but the species pairs concept cannot be applied in this case. The morphological characters traditionally used for species recognition of a number of European Usnea species have been analyzed regarding their reliability. The evolution and distribution of the morphological characters was studied in relation to a phylogeny based on sequence data. Most characters proved to be homoplastic in relation to the phylogeny. Few characters were consistent in a clade, and the same character could be inconsistent in another clade. Therefore a combination of several characters is recommended for species recognition. The relationship of Neuropogon to Usnea was investigated based on sequence data. Neuropogon showed to be closely related to Usnea subg. Usnea. The subgenera Eumitria and Dolichousnea formed the sister group to the clade comprising subg. Usnea and Neuropogon. Usnea is paraphyletic in this investigation. Eumitria is treated as a genus and the subgenus Dolichousnea is elevated to generic rank. The position of Usnea, Neuropogon, Eumitria, and Dolichousnea in the family Parmeliaceae was investigated based on a phylogeny obtained by sequence data. Protousnea probably forms the sister group to the clade of Usnea, Neuropogon, Eumitria, and Dolichousnea. Several monophyletic groups in the family Parmeliaceae were identified.
9

Analýza low-copy sekvencí a její využití pro hodnocení polymorfismu kmenů/izolátů \kur{Beauveria bassiana} / Analysis of low-copy sequences and its utilization for evaluation of genetic polymorphism in selected \kur{Beauveria bassiana} strains/isolates

JOZOVÁ, Eva January 2010 (has links)
Beauveria bassiana is used in biological control against the economically significant pests. Detection of morphological and genetic polymorphism between different species and strains isolated in the natural environment is important to study the distribution and effects in the ecosystem. The aim of this study was to determine in which links are "local tribes" with ecological aspects of biological control in protected zone and assess the polymorphism of the sections by using molecular markers. Were analyzed 36 strains collected in the National Park Šumava in the Czech Republic. Polymorphism of these strains was determined according to a sequence of LSU (28S Large Subunit Ribosomal DNA). It is observed that the populations from National Park is closed, "the local tribes" because these methods can be very well characterized and compared with other strains from different parts of the Czech Republic and other countries. Populations from National Park showed no differences in polymorphism. Through this analysis, the sample Bba I101 was aligned. This preparation is re-used for bark beetle occurring in the National Park Šumava in the Czech Republic. This study was supported by grants GACR 521/08/H042, MSM 60076658-06, MGA SP/2d1/41/08.
10

Rehabilitation and Blight Remediation: An Analysis of Affordable Housing Policy and Development in New Orleans

Butcher, E. Michelle 01 May 2017 (has links)
The City of New Orleans (CNO) Office of Community Development approved funding to rehabilitate 81 properties (73 of which were actually used in the project) that were moved from the site of the VA/LSU Medical complex to scattered sites city-wide. These homes, which were located in a proposed historic district, were chosen to be part of a blight remediation initiative monitored by the CNO Office of Performance and Accountability “BlightSTAT” meeting. This research examines the impact of this U.S. Housing and Urban Development (HUD) sponsored affordable housing program on the New Orleans blight remediation plan. The case study on the properties moved from the site of the VA/LSU Medical complex provides a lens to examine the progress of the CNO Blight policy and analyze various pitfalls and/or successes. Although the affordable housing plan is in progress as of March, 2017, a total of 39 out of 81 properties have been renovated and 29 of those are now occupied. Focusing on the intersection of affordable housing development, historic preservation and blight remediation in this project creates a model for organizations looking to influence public policy through community development. This study examines if and how an integrated planning process, (using the intersection of affordable housing, blight remediation and historic preservation) reshapes public policy and economic development. The study further looks at the CNO BlightSTAT program and how public administration of city resources post Hurricane Katrina has contributed to economic development and neighborhood stabilization in New Orleans.

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