Dissertations / Theses on the topic 'PIAE'
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Eastman, Ryan S. "Experimental Investigation of Steel Pipe Pile to Concrete Cap Connections." BYU ScholarsArchive, 2011. https://scholarsarchive.byu.edu/etd/2628.
Full textCuthbertson-Black, Robert. "The interaction between a flighted steel pipe pile and frozen sand." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 2001. http://www.collectionscanada.ca/obj/s4/f2/dsk3/ftp04/MQ57528.pdf.
Full textMeyer, Natalie Jo. "Soil and plant response to slash pile burning in a ponderosa pine forest." Thesis, Montana State University, 2009. http://etd.lib.montana.edu/etd/2008/meyer/MeyerN1208.pdf.
Full textSeymour, Geoff, and Aregai Tecle. "Impact of Slash Pile Size and Burning on Ponderosa Pine Forest Soil Physical Characteristics." Arizona-Nevada Academy of Science, 2003. http://hdl.handle.net/10150/296601.
Full textRodrigues, Paula Alexandra Pinto. "Archaeological roman glasses: comparative characterisation by non-destructive analytical techniques." Master's thesis, Faculdade de Ciências e Tecnologia, 2011. http://hdl.handle.net/10362/6145.
Full textBejjani-Ghauch, Alice. "Apport de l’analyse élémentaire (IBA) et moléculaire (ToF-SIMS) par faisceaux d’ions à l’étude de matériaux d’intérêt environnemental et pharmaceutique." Thesis, Lyon 1, 2009. http://www.theses.fr/2009LYO10302.
Full textThe aim of this study is to analyze heterogeneous organic matter by exhibiting analytical difficulties by classical techniques under solid state. The first part of this work is dedicated to the study of pesticides photodegradation impregnated in soils by ToF-SIMS technique. A comparative investigation of the induced phenomenon obtained with the same pesticides deposited as thin layer on a neutral support helped in studying the degradation kinetics of those pesticides especially their half-lives. The second part is dedicated to the development of new analytical method for the analysis of commercialized pharmaceutical compounds without prior sample preparation. We have demonstrated the possibility of active ingredient (A.I.) quantification in the presence of the excipients by the following analytical techniques: IBA techniques if the A.I. contains an heteroatom, however, absent in the excipients. The precision (< 7%) is found to be in the majority of the studied cases within the analytical standards of the quality control processes. ToF-SIMS technique for all drugs however within a specific range of concentration defined by the calibration curves for improved sensitivities. These restrictions in the dynamic concentration range depend on the nature of the mixtures A.I. / Excipients on hand and show evidence of the matrix effect on the other hand. A deep investigation on the matrix nature should improve the sample preparation method for more performance analysis. To our knowledge, it is the first time that the above mentioned techniques whose analytical advantages and limitations have been discussed were applied to such solid matrix samples
Seymour, Geoff, and Aregai Tecle. "Impact of Slash Pile Burning on Physical and Chemical Characteristics of Soil in a Ponderosa Pine Forest." Arizona-Nevada Academy of Science, 2002. http://hdl.handle.net/10150/296577.
Full textItoh, Yoshito, Yasuo Kitane, and Xiao Chen. "Evaluation of repair design on corrosion-damaged steel pipe piles using welded patch plates under compression." 土木学会, 2011. http://hdl.handle.net/2237/18848.
Full textITOH, Y., Y. KITANE, and X. CHEN. "Compression Behaviors of Thickness-Reduced Steel Pipes Repaired with Underwater Welds." Elsevier, 2011. http://hdl.handle.net/2237/18823.
Full textChaudhry, Anjum Rashid. "Static pile-soil-pile interaction in offshore pile groups." Thesis, University of Oxford, 1994. http://ora.ox.ac.uk/objects/uuid:7b4c8d56-184f-4c8d-98c9-2d9c69a1ef55.
Full textHöglund, Madicken, and Marcus Larsson. "Grundförstärkning med pålar i berg : I befintlig konstruktion med begränsat utrymme." Thesis, KTH, Byggteknik och design, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-287735.
Full textRichard, Leeland. "Spiral Welded Pipe Piles For Structures In Southeastern Louisiana." ScholarWorks@UNO, 2010. http://scholarworks.uno.edu/td/1257.
Full textRussell, Dalin Newell. "The Influence of Pile Shape and Pile Sleeves on Lateral Load Resistance." BYU ScholarsArchive, 2016. https://scholarsarchive.byu.edu/etd/6232.
Full textBordas, Mariano. "Possibilités offertes par l'utilisation simultanée des méthodes PIXE, Particle Induced X-ray Emission, et PIGE, Particle Induced Gamma-ray Emission, en analyse élémentaire." Grenoble 2 : ANRT, 1988. http://catalogue.bnf.fr/ark:/12148/cb376120482.
Full textBordas, Mariano. "Possibilites offertes par l'utilisation simultanee des methodes pixe (particle induces x-ray emission) et pige (particle induced gamma-ray emission) en analyse elementaire." Université Louis Pasteur (Strasbourg) (1971-2008), 1988. http://www.theses.fr/1988STR13009.
Full textLara-Chavez, Alejandra M. "Somatic embryogenesis in southern and tropical pine species: Loblolly pine (Pinus taeda), Longleaf pine (P. palustris) and Oocarpa pine (P. oocarpa)." Diss., Virginia Tech, 2010. http://hdl.handle.net/10919/77176.
Full textPh. D.
Lituma, Portocarrero Luis. "Pias Voluntades." Pontificia Universidad Católica del Perú, 2016. http://repositorio.pucp.edu.pe/index/handle/123456789/116114.
Full textOlofsson, Filip. "Pite'-maffian." Thesis, Kungl. Musikhögskolan, Institutionen för jazz, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kmh:diva-2411.
Full textKompositioner:The Pilot (Filip Olofsson) Pledge drive (Filip Olofsson) The keys (Filip Olofsson) Pitch (Filip Olofsson) The stakeout (Filip Olofsson) The Opposite (Filip Olofsson) Extra: Giant steps (John Coltrane) Medverkande:Robert Nordmark - saxofon, Petter Olofsson - bas, Filip Olofsson - trummor
Gross, Donovan. "Mountain Pine Beetle Fecundity and Offspring Size Differ Among Lodgepole Pine and Whitebark Pine Hosts." DigitalCommons@USU, 2008. https://digitalcommons.usu.edu/etd/34.
Full textKamil, Insan. "Macro-element modeling for single pile and pile group." Thesis, Lille 1, 2019. http://www.theses.fr/2019LIL1I082.
Full textThe proposed method presents a simple analysis of Soil-Structure Interaction (SSI) for deep foundation under static load that is applied for single pile and pile group. A model based on macroelement concept, inspired from Abboud 2017, is developed to study the SSI taking into account the different nonlinearities. Its formulation is based on the theory of elastoplasticity and is inspired by European standards (Eurocodes 7 and 8). Wherein, the different parameters are defined from laboratory or in situ tests, or from numerical simulations under static conditions. This model reduces computational costs because the nonlinearities related to the SSI are concentrated in particular points of the computation model. The advantage of macroelement lies in its formulation in forces and displacements, which facilitates its use for the justification of the foundations (bearing capacity, sliding, detachment, settlements, translations, distortions and rotations). Furthermore, this macroelement is implemented in a Finite Element Method framework as a fish function in Flac3D. This tool is capable of simulating the SSI in the monotonic loaded pile. The proposed model has been validated with pile load test results, load transfer method (based on Frank and Zhao method) and computer programming (conventional Flac3D and Pilate). The approach succeeds with a good performance. Additionally, the efficiency and practical application of this method in the computation finite-element analysis are feasible for Single Pile and Pile Group
Gerard, Mathias. "Étude des interactions pile/système en vue de l'optimisation d'un générateur pile à combustible : -interactions cœur de pile/compresseur- -interactions cœur de pile/convertisseur-." Phd thesis, Université de Franche-Comté, 2010. http://tel.archives-ouvertes.fr/tel-00618808.
Full textWallertz, Kristina. "Pine weevil feeding in Scots pine and Norway spruce regenerations /." Alnarp : Southern Swedish Forest Research Centre, Swedish University of Agricultural Sciences, 2009. http://epsilon.slu.se/200960.pdf.
Full textDeGomez, Tom, and Deborah Young. "Pine Bark Beetles." College of Agriculture and Life Sciences, University of Arizona (Tucson, AZ), 2009. http://hdl.handle.net/10150/146729.
Full textDeGomez, Tom, and Deborah Young. "Pine Bark Beetles." College of Agriculture, University of Arizona (Tucson, AZ), 2015. http://hdl.handle.net/10150/550373.
Full text4 pp.
Pine bark beetles in Arizona are generally of the genus Ips or Dendroctonus. Fading foliage in the tree is often the first sign of a beetle attack. Prevention is best practiced since control is not possible once the beetles have successfully colonized the tree. Colonization is dependent upon trees being in a vulnerable condition caused by stress from various agents and site conditions.
McCormick, John T. II. "Jack Pine Scraggly." Miami University / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=miami1091500019.
Full textPam, Hoat Joen. "Seismic performance of prestressed concrete piles and pile-pile cap connections." Thesis, University of Canterbury. Civil Engineering, 1987. http://hdl.handle.net/10092/7634.
Full textPike, Stefan. "Experimental investigation of leakage-induced pipe erosion outside of pipe leaks." Master's thesis, University of Cape Town, 2016. http://hdl.handle.net/11427/20518.
Full textOneil, Elaine E. "Developing stand density thresholds to address mountain pine beetle susceptibility in eastern Washington forests /." Thesis, Connect to this title online; UW restricted, 2006. http://hdl.handle.net/1773/5536.
Full textKite, Matthew J. S. "Computational modelling of clay pipe extrusion." Thesis, Available from the University of Aberdeen Library and Historic Collections Digital Resources. Online version available for University members only until June 9, 2014, 2009. http://digitool.abdn.ac.uk:80/webclient/DeliveryManager?application=DIGITOOL-3&owner=resourcediscovery&custom_att_2=simple_viewer&pid=25966.
Full textAcharya, Tanka Prasad Somers Greg Lynn. "Prediction of distribution for total height and crown ratio using normal versus other distributions." Auburn, Ala., 2006. http://repo.lib.auburn.edu/2006%20Fall/Theses/ACHARYA_TANKA_3.pdf.
Full textPowell, David B. "A post-harvest evaluation of mechanized thinning in natural loblolly pine in the coastal plain of Arkansas." Thesis, This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-09192009-040300/.
Full textBockino, Nancy Karin. "Interactions of white pine blister rust, host species, and mountain pine beetle in whitebark pine ecosystems in the Greater Yellowstone." Laramie, Wyo. : University of Wyoming, 2008. http://proquest.umi.com/pqdweb?did=1594498141&sid=3&Fmt=2&clientId=18949&RQT=309&VName=PQD.
Full textESPOSITO, RICARDO GUREVITZ CUNHA. "NUMERICAL MODELLING OF PILE INSTALLATION AND PILE LOAD TEST USING DISCRETE ELEMENTS." PONTIFÍCIA UNIVERSIDADE CATÓLICA DO RIO DE JANEIRO, 2015. http://www.maxwell.vrac.puc-rio.br/Busca_etds.php?strSecao=resultado&nrSeq=26592@1.
Full textCOORDENAÇÃO DE APERFEIÇOAMENTO DO PESSOAL DE ENSINO SUPERIOR
PROGRAMA DE EXCELENCIA ACADEMICA
As alterações no solo decorrentes de um elemento de fundação profunda e seus desempenhos sob a aplicação de carga axial são processos há muito tempo estudados na engenharia civil. Diversos fatores como, método de instalação utilizado, formato da estaca, interações solo-estrutura, mecanismos de transferências de carga, movimentação do solo e alterações na compressibilidade e tensões do solo adjacente, apresentam desafios importantes que ainda não foram totalmente compreendidos nos fenômenos de penetração e capacidade de suporte em estacas. Diversos avanços foram realizados ao longo das últimas décadas para se investigar estes comportamentos, a partir procedimentos experimentais e novas formas de instrumentação, assim como ferramentas numéricas sofisticadas com o emprego de complexos modelos constitutivos em elementos finitos. Apesar destes avanços, a modelagem numérica dos processos citados, com todas as suas complexidades, ainda encontra alguns desafios. Devido a facilidade em lidar com simulações de grandes deformações e de captar o comportamento dilatante e nãolinear de solos granulares, o Método dos Elementos Discretos apresenta uma excelente ferramenta para investigar estes processos, sem grandes complicações. O presente trabalho procurou avaliar os comportamentos obtidos a partir de diferentes processos de instalação da estaca e seus efeitos nos resultados da prova de carga estática em solos granulares. As alterações de tensão e deslocamento foram avaliadas nos diferentes modelos e discutindo sobre uma metodologia básica para obter correspondências qualitativas e quantitativas com os diferentes comportamentos de campo e laboratório. Para este estudo foram utilizados os programas PFC, na versão 2D, e o programa UDEC, da Itasca co.
The disturbances experienced by the soil owing to the load applied to a deep foundation and its relative behavior consist of long time studied phenomena in civil engineering. Several factors such as the installation methods, the pile geometry, the interactions between soil and structure, the load-transfer mechanisms, the soil movements and the disturbances in the stress and compressibility fields present major challenges that have not yet been completely understood. Numerous advances have been observed throw-out the last decades, in order to investigate these behaviors starting from the different pile instrumentations, the use of calibration cameras and centrifuges and most recently the measurement of the stress and strain fields inside the soil mass in model tanks. Despite the advances the numerical modelling of those processes still faces major challenges. Due to simplified approach used by the Discrete Element Method to simulate large deformation and the dilant non-linear behavior of granular soils, it presents as an excellent tool to investigate these processes without further complications. The present work proposed to evaluate the different behaviors obtained with the variations of installation methods investigated as well as their effects in the results of the Pile Load Test. The disturbances were also evaluated in the different models considered and a basic method to achieve qualitative and quantitative comparisons was discussed. These studies were made possible with the help of the PFC2D and UDEC programs developed by Itasca co.
Adams, Thomas P. "Reconstructing Scotland's pine forests." Thesis, University of Edinburgh, 2010. http://hdl.handle.net/1842/4730.
Full textEngland, Melvin Gerrard. "A pile behaviour model." Thesis, Imperial College London, 1999. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.311976.
Full textBarkley, Clayde Betts Mikel Olay Anthony. "Indirect pipe pressure measurement /." Click here to view, 2009. http://digitalcommons.calpoly.edu/mesp/12.
Full textProject advisor: Jim Meagher. Title from PDF title page; viewed on Jan. 20, 2010. Includes bibliographical references. Also available on microfiche.
Pineda-Vargas, Carlos A. "Thick target pixe analysis." Doctoral thesis, University of Cape Town, 1993. http://hdl.handle.net/11427/16005.
Full textThe evaluation of the physical parameters governing the X-ray yield production in thick targets by charged particles was investigated and matrix correction factors (MCF) were calculated for a wide variety of materials including values for all pure non-gaseous elements or their compounds for the Kα and Lα X-ray lines. These factors were calculated for 1, 2, 3 and 4 MeV proton bombarding energies. A new methodology named 'common matrix type' (CMT) was developed for the determination of trace element concentrations in carbon-rich materials, such as most biological materials, with unknown matrix composition. A universal set of matrix correction factors (MCF) values for these materials was established for trace elements with Z ≥ 19 and irradiations with proton energies in the range of 1 to 4 MeV. A similar methodology was developed for silicon-rich and calcium-rich materials where the main components, Al, Si and Ca do not vary appreciably in their concentrations. CMT methodologies were applied successfully for the determination of trace elemental concentrations in a wide variety of thick target materials, which included archaeological cultural materials, biological tissues and geological ores. The technique of correspondence analysis was used for the statistical analysis of the extended data matrix generated in most of the applications. This technique of interpretation of multielemental data proved to be a valuable tool. Two modes of PIXE application, macro-mode and micro-mode, were evaluated at different ion bombarding energies ranging from 1 to 85 MeV. Experimental X-ray production cross sections at 66 and 85 MeV were evaluated and found to correlate well with theory based on the plane wave Born approximation (PWBA) for the Kα and Kβ lines. It was found that the irradiation of intermediate thickness samples of geological ores by energetic protons (66 MeV) is a suitable technique for the determination of small traces of rare earth metals with detection limits for analysis expected to be below the μg.g-1 range. The fact that energetic protons can be used means that no need for matrix correction is necessary. Micro-PIXE with low energy protons was found suitable for the determination of small traces of metals in human kidney stones and for the study of interrelationships between trace element concentrations with time of stone formation, in stones excreted from a single patient.
Cassidy, Richard. "The 1259 pipe roll." Thesis, King's College London (University of London), 2012. https://kclpure.kcl.ac.uk/portal/en/theses/the-1259-pipe-roll(5e71288c-062d-4312-960f-10feccc4c194).html.
Full textKazma, Jad. "EFFECTS OF BEDDING VOID ON INTERNAL MOMENT INCREASE IN CONCRETE PIPES." Master's thesis, University of Central Florida, 2005. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2950.
Full textM.S.C.E.
Department of Civil and Environmental Engineering
Engineering and Computer Science
Civil Engineering
Guillement, Claire. "Pile – Soil Interaction during Vibratory Sheet Pile Driving : a Full Scale Field Study." Thesis, KTH, Jord- och bergmekanik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-136578.
Full textDean, Diana K. "Host utilization by the mountain pine beetle, Dendroctonus ponderosae Hopkins (Coleoptera: Scolytidae), in mixed stands of limber pine, Pinus flexilis James, and lodgepole pine, Pinus contorta latifolia Engelmann." Laramie, Wyo. : University of Wyoming, 2007. http://proquest.umi.com/pqdweb?did=1404342031&sid=1&Fmt=2&clientId=18949&RQT=309&VName=PQD.
Full textFries, Megan L. "Relationships between Rooting Restrictions, Radial Growth, and Drought Stress with White Pine (Pinus strobus) Decline in Southern Maine." Fogler Library, University of Maine, 2002. http://www.library.umaine.edu/theses/pdf/FriesML2002.pdf.
Full textGama, Sophie. "Evénements métallogéniques à W-Bi (Au) à 305 Ma en Châtaigneraie du Cantal : apport d'une analyse multi-spectrométrique (micro PIXE-PIGE et Raman) des minéraux et des fluides occlus à l'identification des sources de fluides hydrothermaux." Phd thesis, Université d'Orléans, 2000. http://tel.archives-ouvertes.fr/tel-00002404.
Full textL'emploi d'un "funny filter" lors de l'analyse PIXE permet la détection des éléments K à U. Ce travail illustre que cette méthode est absolue à condition que la géométrie du dispositif analytique soit connue précisément. La paragenèse primaire à W possède une signature d'éléments traces d'affinité leucogranitique (F, Mn, Zn, Ga, As, Nb, Sn, Ta, W, Bi). L'arsenic apparaît écouplé des leucogranites et contrôlé par les micaschistes encaissants : cet élément est détecté dans les fluides du métamorphisme barrovien (¡Ö340 Ma) et les minéraux et fluides du stade à W (¡Ö305 Ma). Les caisses filoniennes subissent une fracturation en tension, une intense dissolution du quartz, un dépôt géodique
de pyrite et muscovite, une paragenèse à bismuth natif, bismuthinite, molybdénite, chalcopyrite, covellite, tennantite, waylandite, cannonite, sidérite et chlorite. Des tourmalinites massives stériles se développent, en veines ou en remplacement, de façon contemporaine. Les tourmalinites de La Granière présentent du quartz cataclastique avec de nombreuses microinclusions de biotite, muscovite, feldspath potassique, ilménite, zircon, monazite et xénotime. Le cortège de traces de ce stade est caractérisé par Fe, Mn, Cu, Zn, Ti, Cr, Sc, V, Se, Zr, Ag, Cd, Ba, Sr, Sb, Hf, Y, La, Ce et Th.
Les fluides associés sont aquo-carboniques, riches en K, Ca, métaux de base. Le caractère de ce fluide, alumino-potassique, sous-saturé en silice, phosphaté, chargé en métaux lourds et de transition (y compris Cr et Sc), REE, LILE et HFSE, suggère une affinité avec des fluides métasomatiques du manteau, ce que confirment la géochimie, la minéralogie et la texture d'un lamprophyre sécant sur une veine minéralisée. La chimie des minéraux et des fluides indique une ébullition généralisée des
solutions à ce stade en liaison avec le flux thermique élevé et la remontée rapide du bâti en fin d'orogenèse.
Cedervind, Jan. "Impact of pine looper defoliation in Scots pine : secondary attack by pine shoot beetles, tree mortality, top-kill, growth losses, and foliage recovery /." Uppsala : Dept. of Entomology, Swedish Univ. of Agricultural Sciences, 2003. http://epsilon.slu.se/s297.pdf.
Full textDeckner, Fanny. "Ground vibrations due to pile and sheet pile driving : influencing factors, predictions and measurements." Licentiate thesis, KTH, Jord- och bergmekanik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-119291.
Full textMarkvibrationer på grund av pålning är del av en komplex process. Vibrationer genereras från pålmaskinen till pålen. När pålen kommer i kontakt med den omgivande jorden överförs vibrationer mellan påle och jord. Vibrationerna fortplantar sig som vågor genom marken och träffar byggnader och andra konstruktioner, både ovan och under jord. Vibrationerna fortsätter in i byggnaden där de kan orsaka störningar eller skador. I denna avhandling begränsas studien av vibrationsöverföringsprocessen till vibrationskällan och vågutbredningen i jord. Vibrationsöverföringen till intilliggande byggnader eller konstruktioner har inte studerats. Påverkan av vibrationer på byggnader diskuteras dock kort i litteraturstudien. Det är viktigt att på ett tillförlitligt sätt kunna förutsäga markvibrationerna på grund av pålning i stadsmiljö, både över- och underskattade vibrationsnivåer leder till ökade kostnader. Forskning har tidigare utförts inom detta område, men en tillförlitlig och allmänt accepterad prognosmodell för vibrationer på grund av pålning eller spontning saknas fortfarande. Syftet med forskningsprojektet är att öka kunskapen och förståelsen för markvibrationer som uppkommer vid installation genom slagning eller vibrering av pålar och spont. Forskningsprojektet syftar också till att utveckla en tillförlitlig prognosmodell som kan användas av yrkesverksamma ingenjörer för att uppskatta vibrationsnivåer orsakade av pålning. Denna licentiatavhandling presenterar den första delen av forskningsprojektet och syftar till att öka kunskapen och förståelsen inom ämnesområdet samt att skapa en plattform för det fortsatta forskningsarbetet. De viktigaste resultaten och slutsatserna från denna studie är: De huvudsakliga faktorer som påverkar vibrationer orsakade av pålning är; (1) de vibrationer som överförs från källan till jorden, (2) de geotekniska förhållandena på platsen och (3) avståndet från vibrationskällan (pålen). Vibrationerna som överförs från pålen till jorden beror på de vibrationer som överförs från pålmaskinen till pålen, påle-jord interaktionen samt vågutbredning och dämpning i den plastiska/elasto-plastiska zonen som bildas närmast pålen. Det finns idag ingen prognosmodell som uppfyller kriterierna för den ”perfekta” prognosmodellen; tillförlitlig men ändå lätt att tillämpa. Framtida forskning bör undersöka överföringen av vibrationer mellan påle och jord, innefattande uppkomsten av en plastisk/elasto-plastisk zon närmast pålen och hur det påverkar vibrationsöverföringen från påle till jord.
QC 20130314
Chin, Victor B. L. "The dynamic response of pile-soil interfaces during pile driving and dynamic testing events." Monash University, Dept. of Civil Engineering, 2003. http://arrow.monash.edu.au/hdl/1959.1/9421.
Full textBourbour, Ajdari Elena. "Volatile Organic Compound (VOC) Emission during Cured-in-Place-Pipe (CIPP) Sewer Pipe Rehabilitation." ScholarWorks@UNO, 2016. http://scholarworks.uno.edu/td/2126.
Full textAjdari, Elena Bourbour. "Volatile Organic Compound (VOC) Emission during Cured-in-Place-Pipe (CIPP) Sewer Pipe Rehabilitation." Thesis, University of New Orleans, 2016. http://pqdtopen.proquest.com/#viewpdf?dispub=10291102.
Full textThe maintenance or replacement of deteriorated pipes and culverts is a constant and significant concern for municipalities and transportation agencies in the United States (Donaldson and Wallingford, 2010). Trenchless technologies and especially the Curedin- place pipe (CIPP) method have become increasingly common ways to preserve infrastructures owing to their feasibility, cost-effectiveness, and fewer social impacts (Jung and Sinha, 2007). Therefore, there is a growing need to understand the direct and indirect effects of pipeline rehabilitation activities on the environment. Nearly all past CIPP studies have focused on its mechanical properties, and its environmental impacts are poorly investigated and documented (Allouche et al. 2012). Sewer pipelines and storm-water culverts are administered by municipalities and transportation agencies who bear the responsibility for rehabilitation and renewal of these infrastructures. In consequence, they rarely allow sampling and research projects in the field due to liability issues. This is a main obstacle to conducting comprehensive, precise, and unbiased research on CIPP environmental impacts and to date, the degree of relevant health effects and related environmental impacts have remained unknown.
Numerous building indoor air contamination incidents indicate that work is needed to understand the magnitude of styrene emission from CIPP sanitary sewer repairs. The main goal of this study was to better comprehend Volatile Organic Compounds emission at three CIPP sanitary sewer installation sites in one U.S. city. Results showed that CIPP chemical emissions may be a health risk to workers and nearby building inhabitants. Additional testing and investigations regarding chemical emissions from CIPP should be commissioned to fill in the environmental and public health knowledge gaps. The acute and chronic chemical exposure risks of CIPP chemical steam constituents and styrene to sensitive populations should be further examined.
Runesson, Ulf Torarind. "Considerations for early remote detection of mountain pine beetle in green-foliaged lodgepole pine." Thesis, University of British Columbia, 1991. http://hdl.handle.net/2429/31483.
Full textForestry, Faculty of
Graduate
Braun, David M. "Host colonization behavior of the mountain pine beetle (Dendroctonus ponderosae Hopkins) in thinned and unthinned stands of second-growth ponderosa pine (Pinus ponderosa Laws.) /." Thesis, Connect to this title online; UW restricted, 1998. http://hdl.handle.net/1773/5482.
Full text