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Showing 1 to 20 of 23 for “"UHP"”.
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Applying Garnet and Zircon REE Linkages to Determine Timing of P-T Conditions and Tectonic Implications for UHP Eclogites and HP Granulites, Dulan UHP Terrane, China
<p>The Dulan ultrahigh-pressure (UHP) terrane in western China hosts rocks that record continental collision, however; the timing of peak P-T conditions in UHP eclogites and HP granulites, and the tectonic significance of their spatial relationship within the Dulan UHP terrane are not well …
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Evaluation of the Flexural Response of Steel Reinforced UHP-FRC Beams Using Distributed Sensing
… fibre-reinforced concrete (UHP-FRC) and steel reinforcement significantly affects the displacement ductility of UHP-FRC beams in flexure, leading to a brittle failure mechanism due to crack localization. Previous studies faced limitations in fully exploring this interaction …
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Metamorphic P-T Path and Multiple Fluid Events During Burial and Exhumation of the Tso Morari UHP Terrane, NW Himalaya
… orogenic belt underwent ultrahigh-pressure (UHP) coesite-eclogite metamorphism due to northward subduction of the Indian continent under the Eurasian continent during the early Eocene. In this study we optimized a best protocol for thermodynamically modelling pressure-temperature (P-T) paths …
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Geochemistry, Geothermobarometry and Geochronology of High-Pressure Granulites and Implications for the Exhumation History of Ultrahigh-Pressure Terranes: Dulan, Western China
<p>The Dulan ultrahigh-pressure (UHP) rocks of the North Qaidam terrane, Western China, represent continental crust that has been subducted ~100 km during continental collision. Adjacent granulites representing burial to ~50 km could either be overprinted eclogites or a separate …
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Temporal and petrological constraints of ultrahigh-pressure metamorphism and exhumation of crustal material from mantle depths to Earth's surface: Insights from a large and small ultrahigh-pressure terrane
Ultrahigh-pressure (UHP) terranes expose continental material that has subducted to mantle depths and then returned to Earth's surface. These terranes typically consist mainly of migmatitic host ortho- and paragneiss, with minor (~5%) layers and lenses of UHP eclogite; at least twenty terranes have …
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Geology of ultra-high-pressure rocks from the Dabie Shan, Eastern China
… bekannten Vorkommens von ultra-hochdruck (UHP) Gesteinen auf der Erde, des Dabie Shan im östlichen China, zu erhöhen, wurde eine multidisziplinäre Studie durchgeführt. Geophysikalische Daten wurden entlang einer ca. 20 km langen seismischen Linie im östlichen Dabie Shan gesammelt. Diese …
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Behaviour of ultra high performance fibre reinforced concrete subjected to static and impact loads
… performance fibre reinforced concrete (UHP-FRC) has recently emerged as an advanced cementitious material with the potential of enhancing the impact energy absorption capacity of structural elements due to its superior properties. However, major limitations for its wider use and …
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Estimating the thickness of an ultrahigh-pressure (UHP) terrane: insights from phase equilibria modelling and Zr-in-rutile thermometry, Dulan area, North Qaidam terrane, China
The North Qaidam UHP terrane, in western China, exposes minor UHP eclogites hosted by ortho- and paragneisses. In the southeastern part of the terrane, the Dulan area exposes eclogite with the mineral assemblage Grt + Omp ± Ky ± Ph ± Zo ± Qz/Coe. LASS U-Pb analyses of zircons yield weighted mean …
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Tracking multistage deformation within an ultrahigh-pressure terrane: zircon and monazite microstructures and petrochronology from shear zones of the Western Gneiss Region, Norway
… Region (WGR), Norway, is an ultrahigh-pressure (UHP) terrane that was variably deformed during Proterozoic and (U)HPOrdovician-Devonian Caledonian orogenies. There is debate as to the extent andintensity of deformation that occurred during the Caledonian, as the timing and style ofdeformation …
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Intra-operative Prophylactic Pyloric Balloon Dilatation During Oesophagectomy to Prevent Early Delayed Gastric Emptying
… Oesophagectomy in University Hospital Plymouth (UHP) as per our local definition. It has a profound effect on patients’ recovery and may lead to anastomotic leak and pneumonia. Pyloric balloon dilatation (PBD) is a recognised treatment of this complication. Preventative measures such as …
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Study on corrosion protection of organic coatings using electrochemical techniques: developing electrochemical noise method, effective of surface preparation and inhomogeneity of organic coatings
… methods including ultra high pressure (UHP) hydroblasting, wet abrasive blasting, acid pickling and emery abrasion were studied and compared to an as received control surface. A particular interest of this work was the high demand for an environmentally friendly surface preparation …
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Evaluation of the Mechanical Strength of Bund Walls under the Catastrophic Failure of Storage Tanks via Fluid Structure Interaction
… Performance Fibre Reinforced Concrete (UHP-FRC). The investigation was carried out using the Fluid Structure Interaction (FSI) approach. InterFOAM solver in OpenFOAM software was used to model the multiphase flow of the sudden release of the fluid. The available experimental data sets were …
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Synthesis and characterization of rhenium (vii) and rhuthenium (ii) dendritic catalysts: oxidative cleavage and epoxidation of alkenes
… employing using Urea hydrogen peroxide adduct (UHP) as the oxidant and dichlomethane (DCM) as the solvent. The complexes displayed high catalytic activity and selectivity when applied to the epoxidation of cyclohexene and cis-cyclooctene with urea hydrogen peroxide adduct (UHP) as oxidant in …
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Fluid Release During Eclogite Formation, North Qaidam Terrane, Western China
Ultrahigh-pressure (UHP, depths ≳100 km) eclogite samples from the Dulan area of the North Qaidam Terrane, western China, preserve evidence of fluid release along a prograde pressure-temperature (P-T) path. Eclogite sample D126A, Grt + Omp + Qtz + Zo + Amp + Phe + minor Rt + Hem, contains garnet …
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Investigations of Trace Element Titanium in Silica Minerals
… was applied to coesite samples from two UHP (ultra high-pressure) metamorphic locales, the western Alps, Italy, (Dora-Maira) and Papua New Guinea; the estimates for each respective sample were in excellent agreement with previously reported P–T conditions. Chapter 2 involves experiments …
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Thermodynamic and Thermochemical Investigation of Advanced Triso Coated Particle Fuels
… part of this effort utilized Ultra High Purity (UHP) Ar gas which was used to create an atmosphere with a very low oxygen pressure but without the ability to vary this over the entire range of interest. The experiments performed in this research utilized samples of Uranium Dioxide (UO2) and …
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Applications of Elastic Modeling, Thermobarometry, and Thermal History Modeling to (Ultra)high-Pressure Metamorphic Rocks
… characterization of mineralogical evidence for UHP metamorphism in the Appalachian orogen is presented. Multiple thermobarometric methods, including Zr-in-rutile trace element and quartz-in-garnet elastic thermobarometry, were combined with petrologic observations to characterize the prograde …
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THE DETERMINATION OF COPPER IN SEA WATER USING FLOW INJECTION WITH CHEMILUMINESCENCE DETECTION
… operational parameters of the FI manifold in a UHP water sample matrix and the 1,10-phenanthroline CL reaction were rigorously optimised. Interferences to the CL reaction were investigated and the good analytical figures of merit obtained presented. The FI-CL method was modified for the …
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Desarrollo de procesos quimioenzimáticos selectivos. Aplicaciones de procesos multienzimáticos en cascada
… de hidrógeno (urea-hydrogen peroxide, UHP) cataliza la perhidrólisis del acetato de etilo, empleado como disolvente, generando el perácido intermedio (ácido peracético) en el medio de reacción que, posteriormente, es el responsable químico de llevar a cabo con éxito la formación de las …
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Subsurface dolomitization and porosity occlusion within Early to Middle Ordovician strata of the Illinois Basin, USA
… between 10% and 30% porosity in samples from the UHP well, whereas they have only 1-5% porosity in the Superior well. This change suggests that cementation was greater in south, where diagenetic fluids were hotter and contained relatively more dissolved minerals. As these fluids migrated …
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