Дисертації з теми "Timber species"
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Jantan, Mohd Dahlan. "Chemical preservation of some refractory timber species of Malaysia." Thesis, University of Portsmouth, 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.310381.
Повний текст джерелаHart, Tim. "Stem profile equations for several commercially important timber species in Wisconsin /." Link to full text, 2009. http://epapers.uwsp.edu/thesis/2009/Hart.pdf.
Повний текст джерелаSubmitted in partial fulfillment of the requirements of the degree Master of Science in Natural Resources (Forestry), College of Natural Resources. Includes bibliographical references (leaves 82-87).
Kelly, Anthony William. "The efficacy of boron-based preservatives in temperate and tropical timber species." Thesis, University of Portsmouth, 1988. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.327771.
Повний текст джерелаAndo, Amy Whritenour. "Endangered species protection and National Forest timber sales : three essays in economics." Thesis, Massachusetts Institute of Technology, 1996. http://hdl.handle.net/1721.1/10675.
Повний текст джерелаTorneport, Matilda. "Industrial Requirements for Cross-Laminated Timber Manufacturing." Thesis, Linnéuniversitetet, Institutionen för skog och träteknik (SOT), 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:lnu:diva-104924.
Повний текст джерелаSchulze, Mark D. "Ecology and behavior of nine timber tree species in Pará, Brazil : links between species life history and forest management and conservation /." View online version of this title, 2003. http://etda.libraries.psu.edu/theses/approved/WorldWideIndex/ETD-436/index.html.
Повний текст джерелаDevine, Kevin Patrick. "INITIAL RESPONSE OF INVASIVE EXOTIC PLANT SPECIES TO TIMBER HARVESTING IN SOUTHEASTERN KENTUCKY FORESTS." UKnowledge, 2011. http://uknowledge.uky.edu/gradschool_theses/650.
Повний текст джерелаFuchs, Sebastian Mario [Verfasser]. "Diverse forests for climate change: Drought stress tolerance of secondary timber species / Sebastian Mario Fuchs." Göttingen : Niedersächsische Staats- und Universitätsbibliothek Göttingen, 2021. http://d-nb.info/1239894678/34.
Повний текст джерелаBoakye-Yiadom, Kaleem. "Selected anatomical, extractive and physical wood properties of Cylicodiscus gabunensis (Harm) : a tropical timber species /." free to MU campus, to others for purchase, 2001. http://wwwlib.umi.com/cr/mo/fullcit?p3036806.
Повний текст джерелаMark, Jennifer. "Applications of the IUCN Red List in evaluating global extinction risk of timber tree species." Thesis, Bournemouth University, 2018. http://eprints.bournemouth.ac.uk/30531/.
Повний текст джерелаOfori, Daniel Aninagyei. "Genetic diversity and its implications for the management and conservation of Milicia species." Thesis, University of Aberdeen, 2001. http://digitool.abdn.ac.uk/R?func=search-advanced-go&find_code1=WSN&request1=AAIU142070.
Повний текст джерелаFirmanti, Anita. "Fire endurance of the graded timber and wood based panels from the fast-growing tropical species." Kyoto University, 2005. http://hdl.handle.net/2433/145003.
Повний текст джерела0048
新制・論文博士
博士(農学)
乙第11684号
論農博第2567号
新制||農||915(附属図書館)
学位論文||H17||N4067(農学部図書室)
23497
UT51-2005-D602
(主査)教授 川井 秀一, 教授 小松 幸平, 教授 矢野 浩之
学位規則第4条第2項該当
Rara, Angela Dominique Sarmiento. "Rolling Shear Strength and Modulus for Various Southeastern US Wood Species using the Two-Plate Shear Test." Thesis, Virginia Tech, 2021. http://hdl.handle.net/10919/104017.
Повний текст джерелаMaster of Science
Cross-Laminated Timber (CLT) is an engineered wood panel product, similar to plywood, constructed with solid-sawn or structural composite lumber in alternating perpendicular layers. The additions included in the incoming 2021 International Building Code (IBC) has placed an importance in expanding the research related to the mechanical and material properties of CLT. Also, with the increasing demand for softwood lumber and CLT panel production, the demand for the domestic softwood lumber could place a burden and surpass the domestic softwood supply. Rolling shear is a failure type that occurs when the wood fibers in the cross-layers roll over each other because of the shearing forces acting upon a CLT panel. This study used the two-plate shear test to measure the rolling shear properties of various southeastern US wood species: southern pine, yellow-poplar, and soft maple. A secondary study was conducted, using the same two-plate shear test, to measure the rolling shear properties of re-manufactured southern pine for CLT cross-layer application. The soft maple had the greatest average rolling shear strength at 5.93 N/mm2 and southern pine had the lowest average rolling shear strength at 2.51 N/mm2. Using a single factor analysis of variance (ANOVA), the rolling shear strength values from soft maple were significantly greater than yellow-poplar, which was significantly greater than the southern pine. For the rolling shear modulus, the southern pine and soft maple were of equal statistically significant difference, and both were greater statistically significant different compared to the yellow-poplar. The most common failure found from testing was rolling shear.
Soto, Embodas Iria. "A domestication strategy of indigenous premium timber species by smallholders in Central Visayas and Northern Mindanao, the Philippines." Thesis, Uppsala universitet, Systematisk biologi, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-141830.
Повний текст джерелаCowell, Anthony Michael. "Growing timber trees with straight stems : an exploration of relationships between morphological traits in some broadleaved tree species." Thesis, De Montfort University, 2004. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.727131.
Повний текст джерелаVinson, Christina C. "Impact of selective logging on inbreeding and gene flow in two Amazonian timber species with contrasting ecological and reproductive characteristics." Thesis, University of Oxford, 2009. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.510253.
Повний текст джерелаHansen, Simone. "How flower visitation of remnant grassland patches is affected by commercial timber plantations and an invasive alien species (Rubus cuneifolius)." Thesis, Stellenbosch : Stellenbosch University, 2015. http://hdl.handle.net/10019.1/98051.
Повний текст джерелаENGLISH ABSTRACT: Our planet is in the midst of a biodiversity crisis, with factors such as land transformation, climate change, anthropomorphic disturbance and invasive species acting together to threaten biodiversity. In South Africa, with minimal natural wood resources, commercial forestry is one of the most abundant forms of landscape transformation. However, a third of the land inside many plantations has been set aside for conservation as unplanted remnant grassland patches (RGPs). These areas are subjected to an additional negative impact by invasive alien species, namely Rubus cuneifolius (American bramble), a weed that is particularly problematic in and around forestry plantations in South Africa. The grassland biome of South Africa is extremely diverse and is of vital importance for the ecosystem services it supplies. Despite this, the grassland biome is under threat as this is where much of South Africa’s forestry plantations are located. Driven by anthropomorphic disturbance, pollinators are in decline. Landscape transformation of natural areas for forestry plantations is likely to affect plant-pollinator interactions which will affect ecosystems and biodiversity. However, it is not known to what extent these ecosystems are affected. It is thought that the impact depends on the complexity of the ecosystem in question, and analyses at the network-level provide insights into the robustness of ecosystems in the face of biodiversity loss. Thus, this study evaluates the effect of natural habitat fragmentation and invasion of the alien species, R. cuneifolius, on flower visitation networks of South African grasslands. The study was conducted in the KwaZulu-Natal Midlands within a commercial timber plantation and a neighbouring protected area (PA). Flower-visitor observations were carried out in uninvaded protected areas and RGPs and in protected areas and RGPs invaded by R. cuneifolius. I found that RGPs within commercial forestry plantations successfully decrease the negative effects of land transformation on the grasslands of the KwaZulu-Natal Midlands, and flower visitation network patterns are largely maintained in these habitat fragments. However, within RGPs, invasion by R. cuneifolius affected the composition and the interaction network structure of flower-visitor and plant communities. The fact that there are unplanted areas within commercial forestry plantations is positive for biodiversity conservation in South Africa. Research has indicated that these areas successfully aid in the conservation of biodiversity and ecosystem functioning. Due to the positive influence that RGPs have on conservation in fragmented and transformed landscapes, it is critical that these unplanted areas are retained. However, the effects of bramble invasion are more intense within RGPs than within protected areas, and therefore, it must be a priority to keep these areas undisturbed. R. cuneifolius has been found to have devastating effects on ecosystem function and network structure. It is also a category 1 invasive plant within South Africa, and its removal is required by law. Therefore, the removal of bramble must be a management priority.
AFRIKAANSE OPSOMMING: Ons planeet is in die middel van 'n biodiversiteit krisis, met faktore soos grond transformasie, klimaatsverandering, antropomorfiese versteuring en indringerspesies wat gesamentlik werk om biodiversiteit te bedreig. Suid-Afrika, besit minimale houtbronne. Daarom is kommersiële bosbou een van die mees algemene vorme van landskap transformasie. Tog is 'n derde van die land binne baie plantasies opsy gesit vir bewaring as oorblywende grasveld kolle (OGKs). Hierdie gebiede word ongelukkig blootgestel aan die bykomende negatiewe impak van die uitheemse spesies, Rubus cuneifolius (Amerikaanse steekdoring), wat veral problematies is in en rondom bosbouplantasies. Die grasveldbioom van Suid-Afrika is baie divers en is van kardinale belang vir die ekosisteem dienste wat dit lewer. Ten spyte hiervan, word die grasveldbioom bedreig waar dit op dieselfde areas as die meerderheid van Suid-Afrika se bosbouplantasies geleë is. Antropomorfiese versteuring lui daartoe dat bestuiwergetalle daal. Landskap transformasie vir bosbou plantasies raak dus plant-bestuiwer interaksies, wat ekosisteme en biodiversiteit beïnvloed. Dit is nie bekend tot watter mate hierdie ekosisteme geraak word nie. Daar word vermoed dat die impak af hang van die kompleksiteit van die ekosisteem. Ontledings van ekosisteme op netwerk vlak kan insigte bied oor die robuustheid van hierdie ekosisteme in die aangesig van biodiversiteitverlies. Dus, die studie evalueer die effek van fragmentasie van natuurlike habitatte en inval van die indringer spesie, R. cuneifolius, op blom-besoekings netwerke van Suid-Afrikaanse grasvelde. Hierdie studie is uitgevoer in die KwaZulu-Natal Midlands binne 'n kommersiële hout plantasie en 'n naburige beskermde gebied (BG). Blom-besoeker waarnemings was in BGs en OGKs sonder R. cuneifolius, en in BGs en OGKs met R. cuneifolius uitgevoer. Ek het gevind dat OGKs binne kommersiële bosbouplantasies suksesvol is om die negatiewe uitwerking van land transformasie te verminder, en blom-besoeking netwerk patrone grootliks gehandhaaf word in hierdie habitat fragmente. Egter, binne OGKs, het R. cuneifolius die samestelling en die interaksie netwerk struktuur van blom-besoekers en plant gemeenskappe negatief geraak. Die feit dat OGKs ongeplant gelaat word, is positief vir die bewaring van biodiversiteit in Suid- Afrika. Navorsing dui aan dat hierdie gebiede suksesvol is om te help met die bewaring van biodiversiteit en ekosisteemfunksionering. As gevolg van die positiewe invloed van OGKs op bewaring in gefragmenteerde en omskepte landskappe, is dit krities dat hierdie areas ongeplant bly. Egter, die gevolge van steekdoring inval is meer intens binne OGKs as binne beskermde gebiede, en daarom moet dit 'n prioriteit wees om hierdie gebiede ongestoord te hou. R. cuneifolius se verwoestende uitwerking op ekosisteem funksie en netwerk struktuur was baie duidelik. Dit is ook 'n kategorie 1 indringerplant in Suid-Afrika, en sy verwydering word deur is die wet vereis. Daarom moet die verwydering van steekdoring ‘n bestuursprioriteit wees.
Hagemeier, Andrew James. "The Effects of De-Listing the Grizzly Bear from the Endangered Species Act on Timber Management in the Yellowstone Ecosystem." Thesis, The University of Arizona, 2007. http://hdl.handle.net/10150/190429.
Повний текст джерелаRasp, Benjamin Christopher. "SPATIAL AND TEMPORAL PATTERNS OF INVASIVE EXOTIC PLANT SPECIES IN RESPONSE TO TIMBER HARVESTING IN A MIXED MESOPHYTIC FOREST OF EASTERN KENTUCKY." UKnowledge, 2019. https://uknowledge.uky.edu/forestry_etds/45.
Повний текст джерелаFredrickson, H. Signy. "Non-timber forest products, a study of salal productivity, inventory of commercial plant and fungus species, and recommendations for management on the Nanaimo rifle range lands." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2000. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape2/PQDD_0017/MQ54584.pdf.
Повний текст джерелаVanden, Abeele Samuel. "Comparative phylogeography of widespread tree species from the Congo Basin." Doctoral thesis, Universite Libre de Bruxelles, 2019. http://hdl.handle.net/2013/ULB-DIPOT:oai:dipot.ulb.ac.be:2013/298065.
Повний текст джерелаDoctorat en Sciences
info:eu-repo/semantics/nonPublished
Vrazel, Matthew Eric. "The effects of species, adhesive type, and cure temperature on the strength and durability of a structural finger joint." Thesis, Mississippi State : Mississippi State University, 2002. http://library.msstate.edu/etd/show.asp?etd=etd-05152002-122630.
Повний текст джерелаSchumann, Katharina [Verfasser], Rüdiger [Akademischer Betreuer] Wittig, and Georg [Akademischer Betreuer] Ziska. "Impact of land-use on savanna vegetation and populations of non-timber forest product-providing tree species in West Africa / Katharina Schumann. Gutachter: Rüdiger Wittig ; Georg Ziska." Frankfurt am Main : Univ.-Bibliothek Frankfurt am Main, 2011. http://d-nb.info/1044772131/34.
Повний текст джерелаIcimoto, Felipe Hideyoshi. "Dormentes em madeira laminada colada de Pinus oocarpa." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/18/18158/tde-23012014-110222/.
Повний текст джерелаIn 2012 it was announced a government economic package that grants to private operation of roads and railways in Brazil, which will be invested R$ 133 billion, including the construction of 10,000 km railroads. Sleepers are one of the most important structural components in the construction of railways with the function of receiving actions produced by the rail vehicles, diminish dampen vibrations and transmitting them to the ballast and remain invariant distance between rails (gauge). The timbers used in Brazil to manufacture sleepers are from tropical forest. Considering the scarcity and tropical illegal logging, Eucalyptus and Pines planted forests are a interesting alternative. The aim of this study was experimental analyze of the technical feasibility to produce Glulam sleepers using Pinus oocarpa species and polyurethane adhesive to reach the requirements of the recently approved sleepers standard ABNT NBR 7511:2013 Wood sleepers - Requirements and test methods. After intensive experimental program using various layout settings of lamellae and different configurations of cross-sectional an optimization of the manufacturing process of MLC sleepers was done in order to achieve the minimum standard specifications. Results showed that in MLC sleepers of Pinus oocarpa reached the requirements of the standard ABNT NBR 7511:2013 Wood sleepers - Requirements and test methods.
Isik, Aydin. "Disassembly And Re-use Of Building Materials: A Case Study On Salvaged Timber Components." Master's thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/1042431/index.pdf.
Повний текст джерелаwaste&rsquo
materials, while decreasing the cost of construction also preserves the environment from wasteful and extensive use of natural resources. It is hoped that the findings of such a study will encourage professionals to use second hand timber components in Turkey. In order to deal with the waste problem and to save our planet the re-use of construction materials from economic, environmental, social, and historic points of views should be pursued. This research incorporated information about the re-use of timber, including ongoing projects around the world, as reported by the International Council for Research and Innovation in Building Construction (CIB) Task Group on Deconstruction (TG39), a local survey of individuals, organizations, and businesses that are related to the recycling and reuse of building materials. Local deconstruction works, recovery and re-use of timber elements and components were investigated on the basis of information obtained from the demolition contractors in Bentderesi locality in Ankara, a salvaged materials market. iii Moreover the study aimed to observe how used timber components are recovered from a demolition project. By observing the demolition of a building the author was able to determine the problems in recovering timber with the least damage. The findings of the investigation indicated that the architects and the building industry can play an important role to increase recovery rates and conditions of used timber components in construction, considerably. Instead of using nails for timber joints bolted connections should be preferred since they allow demounting and re-use with minimum damage during the deconstruction process. At the same time defects in timber due to extensive and unnecessary nailing can also be avoided. The decision on type of deconstruction, time and cost estimation, worker ability and sensitivity during disassembly influence the success of deconstruction. Tools and machinery used both on the work site and in the UBMs selling area have direct effects on the condition of recovered materials.
Soja, Morgan C. "The effect of timbre and pitch-pattern difficulty on the pitch perceptions of elementary-aged users of cochlear implants." Thesis, The University of North Carolina at Greensboro, 2015. http://pqdtopen.proquest.com/#viewpdf?dispub=3708183.
Повний текст джерелаThe purpose of this study was to examine the effects of timbre and pitch-pattern difficulty on perceptions of same-difference between paired pitch patterns, altered and unaltered by timbre and pattern difficulty, among elementary-aged users of cochlear implants. Three null hypotheses were tested to determine the significant effects of these variables and their interaction on the pitch perceptions of children aged five through twelve, who used cochlear implants (p ≤ .05). Secondary purposes of the study included the examination of the relationships, if any, among age, age at implantation, and pitch perceptions, and of significant differences between participants' speech processor and pitch perceptions (p ≤ .05).
The Adapted Musical Background Questionnaire was completed by each participant/parent/guardian and used to collect information about each participant's hearing history and musical experiences. The Pitch Discrimination Test (PDT) was a researcher-developed, 36-item data collection instrument used to measure pitch perceptions of participants. Three timbres were used as stimuli, including the soprano voice, piano, and violin. Thirteen participant responses to the PDT were recorded individually. Results were analyzed using IBM© SPSS© Statistics Version 22.
Results of the study revealed no effect of timbre (p = .511), or pitch-pattern difficulty (p = .971) on pitch perceptions. A significant interaction between timbre and pitch-pattern difficulty, however, was found (p = .046). Additional analyses revealed that there were significant differences between mean scores of PDT test items presented by violin and soprano voice for difficult patterns (p = .041), and items presented by soprano and piano for patterns with moderate difficulty (p = .041). The participants discriminated difficult patterns more accurately when the PDT items were presented by soprano voice than piano, but participants discriminated moderate patterns more accurately when the PDT items were presented piano than by soprano voice.
There were no significant positive or negative correlations between age or age at implantation and PDT scores (p > .05). Additionally, there were no significant differences between participant scores on the PDT and the type of speech processor used (p > .05). Participants who used Cochlear™ devices, however, had higher average scores than participants who used MED-EL® devices. Recommendations were suggested for future research and instruction of children who use cochlear implants in elementary general music classrooms.
Tyley, Phillip L. "Photodissociation of atmospherically important species." Thesis, University of Oxford, 2000. http://ora.ox.ac.uk/objects/uuid:47f66021-d54e-4f86-ab82-f8cd902b34f6.
Повний текст джерелаWoon, Weng-Chuen. "The economic valuation of Parkia speciosa (petai) in peninsular Malaysia." Thesis, Bangor University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.261341.
Повний текст джерелаDuan, Shufei. "Automated species recognition in environmental recordings." Thesis, Queensland University of Technology, 2014. https://eprints.qut.edu.au/71390/1/Shufei_Duan_Thesis.pdf.
Повний текст джерелаSullivan, June Eileen Marie 1957. "Seeding dates and field establishment of ten southwestern desert wildflower species." Thesis, The University of Arizona, 1988. http://hdl.handle.net/10150/276818.
Повний текст джерелаBorrvall, Charlotte. "Biodiversity and Species Extinctions in Model Food Webs." Doctoral thesis, Linköping : Department of Physics, Chemistry and Biology, Linköping University, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-6660.
Повний текст джерелаBinder, Michael. "Development of a Botrytis specific immunosensor : towards using PCR species identification." Thesis, Cranfield University, 2014. http://dspace.lib.cranfield.ac.uk/handle/1826/12110.
Повний текст джерелаAlcântara, Segundinho Pedro Gutemberg de [UNESP]. "Análise teórico-experimental de um tabuleiro misto madeira-concreto composto por vigas circulares." Universidade Estadual Paulista (UNESP), 2005. http://hdl.handle.net/11449/91482.
Повний текст джерелаCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
O estudo em estruturas mistas é dedicado ao emprego do material madeira-concreto em estruturas de pontes, mais precisamente no seu tabuleiro. No entanto, a aplicação desse material no Brasil não está regulamentada por normas que permitam ao engenheiro civil fazer sua aplicação nas estruturas correntes. Com a proposta de viabilizar o uso desse material madeira-concreto esse estudo vem contribuir com um melhor entendimento do comportamento físico da ligação entre os materiais madeira e concreto. O estudo dessa ligação foi realizado quantificando o módulo de deslizamento em corpos-de-prova do tipo push-out, vigas T e tabuleiro de madeira-concreto. Os resultados experimentais do módulo de deslizamento obtidos por esses três tipos de ensaios foram comparados com os resultados obtidos teoricamente pelo Eurocode 5 (1993). Também, no seguinte estudo foi feito uma simulação numérica do tabuleiro de madeira-concreto usando um programa para análise estrutural baseado no Método dos Elementos Finitos (MEF). Na conclusão dessa pesquisa verificou-se que o comportamento estrutural desse material misto pode-ser calculado usando o Eurocode 5 (1993) e o Método dos Elementos Finitos (MEF).
The study of mixed structures is dedicated to the use of timber-concrete material in bridges' structures, more precisely in its tray. However, the application of this material in Brazil is not regulated by standards that allow the civil engineer to make its application in the current structures. With the proposal to make possible the use of this timber-concrete material this study contributes to understand better the physical behavior of the linking between wood and concrete. The study of this connection was carried through quantifying the slip's module in specimens of push-out type, T beams and timber-concrete's tray. The experimental results of the slip's module from these three kinds of tests had been compared with the results obtained theoretically for Eurocode 5 (1993). Also, in the following study it was made a mathematical simulation of the wood-concrete's tray using a numerical analysis' program based on the Finite Elements' Method (MEF). In the conclusion of this research it was verified that the structural behavior of this mixed material can to be calculated using Eurocode 5 (1993) and the Method of the Finite Elements (MEF).
Alexandrou, Ioannis G. "Growth and characterisation of CN films incorporating fullerene-like species." Thesis, University of Liverpool, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.344005.
Повний текст джерелаDunkley, Kingsley Delroy. "Modulation of cell yields and genetic responses of Salmonella fermentation and colonization in the gastrointestinal ecology of avian species." [College Station, Tex. : Texas A&M University, 2006. http://hdl.handle.net/1969.1/ETD-TAMU-1187.
Повний текст джерелаSumner, Mitch A. "Cross-species comparisons of the retrosplenial cortex in primates: Through time and neuropil space." Kent State University / OhioLINK, 2013. http://rave.ohiolink.edu/etdc/view?acc_num=kent1364987439.
Повний текст джерелаSamsoedin, Ismayadi. "Biodiversity and sustainability in the Bulungan Research Forest, East Kalimantan, Indonesia : the response of plant species to logging." Thesis, University of Stirling, 2007. http://hdl.handle.net/1893/224.
Повний текст джерелаThorson, James Turner. "Multi-Species Models of Time-Varying Catchability in the U.S. Gulf of Mexico." Thesis, Virginia Tech, 2009. http://hdl.handle.net/10919/32662.
Повний текст джерелаMaster of Science
Dixon, Thomas S. "Problems for presentism the inconsistency of presentism with the special theory of relativity /." Laramie, Wyo. : University of Wyoming, 2008. http://proquest.umi.com/pqdweb?did=1594478181&sid=2&Fmt=2&clientId=18949&RQT=309&VName=PQD.
Повний текст джерелаAlcântara, Segundinho Pedro Gutemberg de. "Análise teórico-experimental de um tabuleiro misto madeira-concreto composto por vigas circulares /." Ilha Solteira : [s.n.], 2005. http://hdl.handle.net/11449/91482.
Повний текст джерелаBanca: Renato Bertolino Junior
Banca: Antonio Alves Dias
Resumo: O estudo em estruturas mistas é dedicado ao emprego do material madeira-concreto em estruturas de pontes, mais precisamente no seu tabuleiro. No entanto, a aplicação desse material no Brasil não está regulamentada por normas que permitam ao engenheiro civil fazer sua aplicação nas estruturas correntes. Com a proposta de viabilizar o uso desse material madeira-concreto esse estudo vem contribuir com um melhor entendimento do comportamento físico da ligação entre os materiais madeira e concreto. O estudo dessa ligação foi realizado quantificando o módulo de deslizamento em corpos-de-prova do tipo "push-out", vigas T e tabuleiro de madeira-concreto. Os resultados experimentais do módulo de deslizamento obtidos por esses três tipos de ensaios foram comparados com os resultados obtidos teoricamente pelo Eurocode 5 (1993). Também, no seguinte estudo foi feito uma simulação numérica do tabuleiro de madeira-concreto usando um programa para análise estrutural baseado no Método dos Elementos Finitos (MEF). Na conclusão dessa pesquisa verificou-se que o comportamento estrutural desse material misto pode-ser calculado usando o Eurocode 5 (1993) e o Método dos Elementos Finitos (MEF).
Abstract: The study of mixed structures is dedicated to the use of timber-concrete material in bridges' structures, more precisely in its tray. However, the application of this material in Brazil is not regulated by standards that allow the civil engineer to make its application in the current structures. With the proposal to make possible the use of this timber-concrete material this study contributes to understand better the physical behavior of the linking between wood and concrete. The study of this connection was carried through quantifying the slip's module in specimens of "push-out" type, T beams and timber-concrete's tray. The experimental results of the slip's module from these three kinds of tests had been compared with the results obtained theoretically for Eurocode 5 (1993). Also, in the following study it was made a mathematical simulation of the wood-concrete's tray using a numerical analysis' program based on the Finite Elements' Method (MEF). In the conclusion of this research it was verified that the structural behavior of this mixed material can to be calculated using Eurocode 5 (1993) and the Method of the Finite Elements (MEF).
Mestre
Hutter, Carl R., Shea M. Lambert, and John J. Wiens. "Rapid Diversification and Time Explain Amphibian Richness at Different Scales in the Tropical Andes, Earth’s Most Biodiverse Hotspot." UNIV CHICAGO PRESS, 2017. http://hdl.handle.net/10150/626254.
Повний текст джерелаVundavalli, Suveen Kumar, and Sri Rama Srinivasa Varma Danthuluri. "Bird Chirps Annotation UsingTime-Frequency Domain Analysis." Thesis, Blekinge Tekniska Högskola, Institutionen för tillämpad signalbehandling, 2016. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-13624.
Повний текст джерелаAigbavbiere, Ernest. "How does predation from fish influence the benthic invertebrates’ species composition in the Phragmites australis and Chara vegetation of Lake Takern?" Thesis, Linköpings universitet, Ekologi, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-72643.
Повний текст джерелаMSc Ecology and Environmental Science
Chung, Sunjung. "Effect of Poor Sanitation Procedures on Cross-Contamination of Animal Species in Ground Meat Products." Chapman University Digital Commons, 2019. https://digitalcommons.chapman.edu/food_science_theses/3.
Повний текст джерелаKöchy, Martin, and Katja Tielbörger. "Hydrothermal time model of germination : parameters for 36 Mediterranean annual species based on a simplified approach." Universität Potsdam, 2006. http://opus.kobv.de/ubp/volltexte/2007/1240/.
Повний текст джерелаKeimungsgeschwindigkeit und Anteil gekeimter Samen lassen sich gut mit dem Hydrothermalzeit-Modell bestimmen. Dessen vier Parameter Hydrothermalzeit, Mindesttemperatur, Mindestbodenfeuchte und Streuung der Mindestbodenfeuchte müssen jedoch durch aufwendige Keimungsversuche bei Kombinationen von mehreren Temperatur- und Feuchtigkeitsstufen bestimmt werden. Für manche Anwendungen des Hydrothermalzeit-Modells sind aber ungefähre Werte für viele Arten wichtiger als genaue Werte für wenige Arten. Wenn die Mindesttemperatur und die Streuung der Mindestfeuchte aus Veröffentlichungen und Expertenwissen geschätzt würde, können die Hydrothermalzeit und Mindestbodenfeuchte aus vorhandenen Daten von Keimungsversuchen mit nur einer Temperatur- und Feuchtigkeitsstufe berechnet werden. Wir haben unseren Ansatz auf einen Keimungsversuch zum Vergleich der Keimungsquote wilder einjähriger Arten entlang eines Trockenheitsgradienten in Israel angewendet. Mit diesem Ansatz bestimmten wir die Hydrothermalzeit und Mindestfeuchtigkeit von 36 Arten. Der Vergleich mit genauen Werten für drei Arten zeigt, dass mit unserem Ansatz Hydrothermalzeit-Parameter einfach und effektiv bestimmt werden können. Hydrothermalzeit und Mindestfeuchtigkeit sollten auch bestimmte klimabedingte Keimungsstrategien anzeigen. Deshalb testeten wir, ob diese zwei Parameter mit dem Klima am Ursprungsort der Samen zusammenhängen. Wir fanden jedoch keinen für alle Arten übereinstimmenden Zusammenhang, so dass die Unterschiede vermutlich stärker durch standörtliche als durch klimatische Ursachen hervorgerufen werden.
Schwartz, Jean-Luc. "Représentations auditives de spectres vocaliques." Grenoble INPG, 1987. http://www.theses.fr/1987INPG0086.
Повний текст джерелаWu, Andrew. "Can Spiders (Argiope Aurantia) Indirectly Affect the Fitness of Orange Coneflowers (Rudbeckia Fulgida) by Limiting Pollinator Visitation?" University of Akron / OhioLINK, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=akron1343307113.
Повний текст джерелаFair, Joseph Edward. "Infant Facial Discrimination and Perceptual Narrowing." BYU ScholarsArchive, 2009. https://scholarsarchive.byu.edu/etd/2154.
Повний текст джерелаKim, Ji Sun. "CULTIVABLE FUSOBACTERIUM SPECIES IN CHRONIC PERIODONTITIS MICROBIOTA IDENTIFIED WITH MATRIX-ASSISTED LASER DESORPTION/IONIZATION TIME-OF-FLIGHT MASS SPECTROMETRY." Master's thesis, Temple University Libraries, 2015. http://cdm16002.contentdm.oclc.org/cdm/ref/collection/p245801coll10/id/318875.
Повний текст джерелаM.S.
Objectives: Fusobacteria are prominent participants in the maturation of subgingival dental plaque biofilms in humans. A number of various species belonging to the Fusobacterium genus have been recovered from the subgingival microbiota of chronic periodontitis patients. However, conventional Fusobacterium species identification is labor-intensive, time-consuming, and complicated by shortcomings in phenotypic-based classification schemes, where many fusobacteria display overlapping and non-distinguishing morphologic features and biochemical properties. In addition, molecular identification of fusobacteria is plagued with difficulties of validating the specificity of nucleic acid probes and primers to various Fusobacterium species that have closely-related interspecies genetic profiles. Matrix-assisted laser desorption/ionization time-of-flight (MALDI-TOF) mass spectrometry, and its associated analytic software, was recently approved for clinical microbiology diagnostic use by the United States Food and Drug Administration. MALDI-TOF mass spectrometry has the potential to rapidly identify cultivable clinical isolates to a species level for 4,613 different bacterial species based on mass spectra of their bacterial protein profiles, including many Fusobacterium species. The purpose of this study was to use MALDI-TOF mass spectrometry to rapidly identify the patient distribution of fusobacteria isolated from the subgingival microbiota of chronic periodontitis patients. Methods: A total of 34 chronic periodontitis patients provided 96 fresh subgingival cultivable fusobacteria isolates (one to seven isolates per patient), which were presumptively identified by their chartreuse-positive colony autofluorescence under long-wave ultraviolet light on anaerobically-incubated, non-selective, enriched Brucella blood agar primary isolation plates. Each of the presumptive fusobacteria clinical isolates were subjected to MALDI-TOF mass spectrometry analysis using a bench top mass spectrometer, Bruker FlexControl 3.0 software, and MALDI Biotyper 3.1 software (Bruker Daltonics, Billerica, MA, USA), which contains mass spectra for a variety of fusobacteria in its reference library of bacterial protein profiles. Each clinical isolate underwent on-target plate formic acid protein extraction, and was taxonomically classified with MALDI-TOF mass spectrometry within an approximately 30-45 minute time period from the point of colony harvesting from primary isolation culture plates. A MALDI Biotyper log score of equal to or larger than 1.7 was required for reliable taxonomic classification of the clinical fusobacteria isolates. Results: A majority (58.8%) of the chronic periodontitis patients yielded two or three different species of subgingival Fusobacterium on non-selective enriched Brucella blood agar primary isolation plates. Fusobacterium naviforme was identified by MALDI-TOF mass spectrometry analysis in 14 (41.2%) chronic periodontitis study patients, Fusobacterium nucleatum subspecies vincentii in 13 (38.2%) patients, Fusobacterium nucleatum subspecies polymorphum in 9 (26.5%) patients, Fusobacterium nucleatum and Fusobacterium species each in 6 (17.6%) patients, Fusobacterium nucleatum subspecies nucleatum in 4 (11.8%) patients, and Fusobacterium nucleatum subspecies animalis in 3 (8.8%) patients. Three patients additionally yielded subgingival isolates of Fusobacterium canifelinum, normally an inhabitant of the oral cavity of dogs and cats. 52 (54.2%) of the fusobacteria clinical isolates revealed MALDI Biotyper log scores of equal to or larger than 1.7, the threshold for reliable taxonomic classification, while in comparison, 44 (45.8%) had log scores less than 1.7, indicating a less reliable species identification. No other microbial species, other than one of the Fusobacterium species, was listed by the MALDI-TOF mass spectrometry analytic software as the most likely organism for the tested clinical isolates. Conclusions: These findings indicate that a variety of Fusobacterium species may be identified with MALDI-TOF mass spectrometry in the subgingival microbiota of chronic periodontitis patients. F. naviforme and F. nucleatum subspecies vincentii were the most frequently isolated subgingival fusobacteria species in the evaluated study patients. Three chronic periodontitis patients also unexpectedly revealed subgingival isolates of the animal species F. canifelinum, which is normally in the oral cavity of dogs and cats. MALDI-TOF mass spectrometry may facilitate rapid identification of cultivable fusobacteria in human subgingival dental plaque biofilms, and enhance understanding of bacterial community structure in periodontal pockets.
Temple University--Theses
Macintyre, Alasdair. "Spectres in the studio : Time, memory and the artist's haunted imagination." Phd thesis, Australian Catholic University, 2022. https://acuresearchbank.acu.edu.au/download/1b352559bf33109aaf78ce86abeb5bbbbbd754c375b9b3ec71fb778bd891fb4e/16278474/Macintyre_2022_Spectres_in_the_studio_time_memory.pdf.
Повний текст джерела