Search Results - "Sharp, Thomas G."

Formation, preservation and extinction of high-pressure minerals in meteorites: temperature effects in shock metamorphism and shock classification by Hu, Jinping, Sharp, Thomas G.

“…The goal of classifying shock metamorphic features in meteorites is to estimate the corresponding shock pressure conditions. However, the temperature…”
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Origin of Low-26Al/27Al Corundum/Hibonite Inclusions in Meteorites by Desch, Steven J., Dunham, Emilie T., Herbst, Ashley K., Unterborn, Cayman T., Sharp, Thomas G., Bose, Maitrayee, Mane, Prajkta, Williams, Curtis D.

“…Abstract Most meteoritic calcium-rich, aluminum-rich inclusions formed from a reservoir with 26 Al/ 27 Al ≈ 5 × 10 −5 , but some record lower ( 26 Al / 27 Al )…”
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Percutaneous Coronary Intervention Versus Coronary Bypass Surgery in United States Veterans With Diabetes by Kamalesh, Masoor, MD, Sharp, Thomas G., MD, Tang, X. Charlene, MD, PhD, Shunk, Kendrick, MD, PhD, Ward, Herbert B., MD, PhD, Walsh, James, MD, PhD, King, Spencer, MD, Colling, Cindy, RPh, MS, Moritz, Thomas, MS, Stroupe, Kevin, PhD, Reda, Domenic, PhD

“…Objectives This study sought to determine the optimal coronary revascularization strategy in patients with diabetes with severe coronary disease. Background…”
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High-pressure phases in shock-induced melt of the unique highly shocked LL6 chondrite Northwest Africa 757 by Hu, Jinping, Sharp, Thomas G.

“…Northwest Africa 757 is unique in the LL chondrite group because of its abundant shock‐induced melt and high‐pressure minerals. Olivine fragments entrained in…”
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Evidence for the charge disproportionation of iron in extraterrestrial bridgmanite by Bindi, Luca, Shim, Sang-Heon, Sharp, Thomas G, Xie, Xiande

“…Bridgmanite, MgSiO with perovskite structure, is considered the most abundant mineral on Earth. On the lower mantle, it contains Fe and Al that strongly…”
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A large shock vein in L chondrite Roosevelt County 106: Evidence for a long-duration shock pulse on the L chondrite parent body by Sharp, Thomas G., Xie, Zhidong, de CARLI, Paul S., Hu, Jinping

“…A large shock‐induced melt vein in L6 ordinary chondrite Roosevelt County 106 contains abundant high‐pressure minerals, including olivine, enstatite, and…”
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Catching up with solid tumor oncology: what is the evidence for a prognostic role of programmed cell death-ligand 1/programmed cell death-1 expression in B-cell lymphomas? by McClanahan, Fabienne, Sharp, Thomas G, Gribben, John G

“…Therapeutic strategies targeting the programmed cell death-ligand 1/programmed cell death-1 pathway have shown significant responses and good tolerability in…”
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Back-transformation of high-pressure minerals in shocked chondrites: Low-pressure mineral evidence for strong shock by Hu, Jinping, Sharp, Thomas G.

“…Post-shock annealing of meteorites can destroy their shock-induced features, particularly high-pressure minerals, and complicate the estimation of impact…”
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Formation of silica by low-temperature acid alteration of Martian rocks: Physical-chemical constraints by McAdam, Amy C., Zolotov, Mikhail Y., Mironenko, Mikhail V., Sharp, Thomas G.

“…Theoretical geochemical modeling has been used to evaluate the formation conditions of amorphous silica during aqueous alteration of typical Martian igneous…”
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Emission spectroscopy of clay minerals and evidence for poorly crystalline aluminosilicates on Mars from Thermal Emission Spectrometer data by Michalski, Joseph R., Kraft, Michael D., Sharp, Thomas G., Williams, Lynda B., Christensen, Philip R.

“…To understand the aqueous history of Mars, it is critical to constrain the alteration mineralogy of the Martian surface. Previously published analyses of…”
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Mineralogical constraints on the high-silica martian surface component observed by TES by Michalski, Joseph R., Kraft, Michael D., Sharp, Thomas G., Williams, Lynda B., Christensen, Philip R.

“…The Thermal Emission Spectrometer (TES) has observed a high-silica material in the dark regions of Mars that is spectrally similar to obsidian glass and may…”
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Estimating shock pressures based on high-pressure minerals in shock-induced melt veins of L chondrites by XIE, Zhidong, Sharp, Thomas G., De Carli, Paul S.

“…— Here we report the transmission electron microscopy (TEM) observations of the mineral assemblages and textures in shock‐induced melt veins from seven L…”
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Nanotextures and formation process of coesite in silica glass from the Xiuyan impact crater by Yin, Feng, Sharp, Thomas G., Chen, Ming, Uwe Reimold, Wolf

“…Coesite embedded in silica glass in suevite from the Xiuyan crater has been studied by scanning and transmission electron microscopy to better understand the…”
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Al‐Cu‐Fe alloys in the solar system: Going inside a Khatyrka‐like micrometeorite (KT01) from the Nubian Desert, Sudan by Ma, Chi, Hu, Jinping, Suttle, Martin D., Guan, Yunbin, Sharp, Thomas G., Asimow, Paul D., Steinhardt, Paul J., Bindi, Luca

“…Abstract A recently described micrometeorite from the Nubian desert (Sudan) contains an exotic Al‐Cu‐Fe assemblage closely resembling that observed in the…”
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A Monoclinic Post-Stishovite Polymorph of Silica in the Shergotty Meteorite by El Goresy, Ahmed, Dubrovinsky, Leonid, Sharp, Thomas G., Saxena, Surendra K., Chen, Ming

“…A post-stishovite phase of silica was identified in the Shergotty meteorite by x-ray diffraction and field emission scanning electron microscopy. The…”
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The Majorite-Pyrope + Magnesiowüstite Assemblage: Constraints on the History of Shock Veins in Chondrites by Chen, Ming, Sharp, Thomas G., El Goresy, Ahmed, Wopenka, Brigitte, Xie, Xiande

“…Shock veins in the Sixiangkou (L6) chondrite contain two high-pressure assemblages: (i) majorite-pyrope solid solution plus magnesiowüstite that crystallized…”
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Host rock solid-state transformation in a shock-induced melt vein of Tenham L6 chondrite by Xie, Zhidong, Sharp, Thomas G.

“…The host-rock fragments entrained in a 580-μm-wide melt vein of the Tenham L6 chondrite were investigated using field-emission scanning electron microscopy…”
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Introduction to the special issue of Meteoritics & Planetary Science on “Shock metamorphism and high pressure phases in meteorites and terrestrial impactites” by Tschauner, Oliver, Sharp, Thomas G., Stöffler, Dieter

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Petrology and geochemistry of olivine‐phyric shergottites LAR 12095 and LAR 12240: Implications for their petrogenetic history on Mars by Dunham, Emilie T., Balta, J. Brian, Wadhwa, Meenakshi, Sharp, Thomas G., McSween, Harry Y.

“…Larkman Nunatak (LAR) 12095 and LAR 12240 are recent olivine‐phyric shergottite finds. We report the results of petrographic and chemical analyses of these two…”
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Effect of modified ultrafiltration in high-risk patients undergoing operations for congenital heart disease by Bando, Ko, Turrentine, Mark W, Vijay, Palaniswamy, Sharp, Thomas G, Sekine, Yasuo, Lalone, Brian J, Szekely, Laszlo, Brown, John W

“…Background. Modified ultrafiltration (MUF) after cardiopulmonary bypass (CPB) in children decreases body water, removes inflammatory mediators, improves…”
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