Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 55 for “"PBO"”.
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Untersuchung von Verbundwerkstoffen mit Basalt- und PBO-Faser-Verstärkung
… auf die freie Oberflächenenergie der PBO-Fasern und die Grenzflächenscherfestigkeit wird mittels der Kontaktwinkelmessung und der Einzelfaserauszugprüfung untersucht. Um die durch diese Oberflächenmodifizierungen hervorgerufenen Veränderungen der mechanischen Verbundeigenschaften sowie …
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Torsional behavior of RC beams strengthened with PBO-FRCM composite
… bonded polyparaphenylene benzo-bisoxazole (PBO)-FRCM composite material. A comprehensive review and discussion of the previous experimental, analytical, and numerically-simulated torsional behavior of RC beams strengthened with FRP composite was introduced to gain a better understanding of …
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Optimierung des PbO-Haushaltes in undotierten und SKN-substituierten PZT-Fasern: Gefüge und Eigenschaften
… über drei Wege: (1) über eine Optimierung des PbO-Gehaltes im Spinnsol, (2) über eine Anpassung der bei der Sinterung eingesetzten PbO-haltigen Puffersysteme sowie (3) über Variationen der Sinterzeit. Durch eine geeignete Kombination all dieser Präparationsparameter gelang es, phasenreine …
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Stakeholders’ perception towards sustainable business locations of purpose-built office in Kuala Lumpur, Malaysia
Purpose-built office (PBO) market in Malaysia has become more challenging in coming years since the sustainability has added new dimensions to the complexity in the location evaluation of PBO. Nevertheless, there is a lack of research in this country that studied the sustainable business locations …
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Pesticide Mixtures Induce Immunotoxicity: Potentiation of Apoptosis and Oxidative Stress
… (an organophosphate) and piperonyl butoxide (PBO; a synergist). Based on minimum cytotoxicity (> LC25), the following concentrations were chosen for the pesticide mixture studies: 70μM lindane (Lind), 50μM malathion (Mal) and 55μM PBO. In the AlamarBlue cytotoxicity assay, individual …
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Dissolution, Formation, and Transformation of the Lead Corrosion Product PbO<sub>2</sub>: Rates and Mechanisms of Reactions that Control Lead Release in Drinking Water Distribution Systems
… products in lead service lines, lead(IV) oxide: PbO<sub>2</sub>) can react with water through reductive dissolution, resulting in elevated lead concentrations in tap water. Limited data are available on the rates and mechanisms of PbO<sub>2</sub> dissolution. Information regarding the impact of …
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Current Ground Deformation Derived from GPS Observations near PBO Station AC 55 along the Yentna River, South of Denali National Park Reserve, Alaska
The Plate Boundary Observatory (PBO) has a network of 1100 permanent continuously operating Global Positioning System (GPS) stations, of which approximately 200 are located in Alaska. GPS station AC55 was accidently installed on a slow moving landslide. In order to isolate the landslide motion, …
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The oxidation kinetics of liquid lead and lead alloys
… a range of 730 mm to 1 mm Hg of oxygen. Both PbO (orthorhombic) and PbO (tetragonal) were found to be the reaction products at temperatures of 350 and 450°C. At 550°C only PbO (orthorhombic) was found. In all cases, the oxide was preferentially oriented, with the (002) basal plane parallel to …
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Sintering kinetics and properties of highly pure lead zirconate titanate ceramics
… phase of starting components as well. PbO concentration was changed during calcination depending on the formation kinetics of intermediate lead titanate. Sintering temperatures were dramatically reduced and densification rates were strongly enhanced by the introduction of lead oxide …
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Effects of Δ9-Tetrahydrocannabinol on Neural Reward Anticipation Among Young Adult Cannabis Users
… and neural reward anticipation under placebo (PBO) and Δ⁹-THC conditions. Methods: Young adult cannabis users (N=31) participated in a within-subjects, randomized, double-blind, placebo-controlled study. Participants completed self-report measures of cannabis use at baseline, then completed the …
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The Activity of Analogs of the Natural Product Dillapiol and Sessamol as Detoxification Enzyme Inhibitors and Insecticide Synergists
… to the commercially used piperonyl butoxide (PBO). Initially a set of fifty two dillapiol analogs was investigated for inhibition of cytochrome P450 using cloned Human CYP3A4, a highly standardized preparation that allowed accurate determination of structure activity relationships. A …
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Preparation and characterization of lead lanthanum titanate thin films by metalorganic decomposition
… was also studied for 0% to 20% of excess PbO. The x-ray diffraction patterns of all films at room temperature indicated a cubic structure with lattice constant of 3.92 A. Optical and electrical measurements showed that the films made assuming B-site vacancies had better properties. In …
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Ion assisted deposition of multicomponent thin films
… from the reaction between films in the deposited PbO ITi0₂ multilayer. The film stoichiometry was accurately controlled by depositing individual layers of the required thickness. Development of film stresses associated with the formation of the product layer at the PbO/Ti0₂ interface of the …
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The effect of free chlorine and monochloramine on lead in drinking water and epitaxial electrodeposition of tin sulfide
… is capable of oxidizing Pb and Pb²⁺ species to PbO₂, which is a stable and insoluble oxide of Pb and should minimize the Pb dissolution. However, experimental results utilizing EQCM, XRD, and SEM show that NH₂Cl elevated Pb levels in water by oxidizing Pb or reducing PbO₂ films to soluble Pb²⁺ …
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Symbiont-Mediated Modification of Mosquitocide Toxicity in the Dengue Vector, Aedes aegypti
… The insecticide synergists piperonyl butoxide (PBO), triphenyl phosphate (TPP), and S,S,S-tributyl phosphorotrithioate (DEF) were used to examine the metabolic detoxification and toxic action of the two mosquitocides in mosquito larvae. A significant increase in the toxicity of propoxur was …
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Development of a Monte Carlo simulation model of the signal formation processes inside photoconducting materials for active matrix flat panel direct detectors in digital mammography
… GaAs, Ge, CdTe, CdZnTe, Cd0.8Zn0.2Te, ZnTe, PbO, TlBr, PbI2 και HgI2, με την ανάπτυξη μοντέλου προσομοίωσης με τεχνικές Monte Carlo της παραγωγής των πρωτογενών ηλεκτρονίων για διάφορα φάσματα ακτίνων Χ στο μαστογραφικό εύρος ενεργειών. Το μοντέλο προσομοιώνει την αλληλεπίδραση φωτονίων-ύλης …
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Ternary Rare-Earth Coinage Metal Arsenides LnTAs2, Sm2Cu3As3; Quaternary Arsenide Oxides Sm2CuAs3O and Selenides KGd2CuSe4, KLn2Cu3Se5, and K2Ln4Cu4Se9 (Ln = Y, La - Nd, Sm, Gd - Lu; T = Cu, Ag, Au): Syntheses, Crystal Structures and Physical Properties
… related to the HfCuSi2 type consisting of PbO-like layers of T and As atoms, square layers of As atoms and layers of Ln atoms separating the former two building units. All copper compounds of this series contain regular square nets of As atoms, whereas the respective nets in the silver and …
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ANALISIS COMPARATIVO DE LOS PBOT Y EOT RELATIVOS A LOS PROCESOS DE SUBURBANIZACION EN LOS MUNICIPIOS DE GUASCA Y LA CALERA A LA LUZ DE LA PLANEACION INTEGRAL EN UN MARCO METROPOLITANO
… constituye un análisis comparativo de los PBOT y EOT de los municipios de La Calera y Guasca Cundinamarca, en los procesos de suburbanización en proyectos de vivienda campestre, y la repuesta de los municipios ante la dinámica urbana en el territorio en el corredor vial de la Perimetral …
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Performance-based optimization method for structural topology and shape design
… development of a Performance-Based Optimization (PBO) method for topology and shape design of continuum structures subject to stress, displacement and overall stiffness constraints, and its practical applications to stuctural engineering.
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