Results 11 to 20 of about 7,592,442 (289)

Timing of late Palaeoproterozoic metamorphism in the northern Belomorian Belt, White Sea region: Conclusions from U-Pb isotopic data and P-T evidence [PDF]

Bulletin of the Geological Society of Finland, 2001
Brilliant-looking zircon crystals from a garnet-amphibolitic, metamorphosed mafic dyke at Lyagkomina in the Lake Kovdozero area, northern Belomorian Belt, most probably mark the 1875±4 Ma age of peak late Palaeoproterozoic regional metamorphism which ...
T. Skiöld, S. Bogdanova, R. Gorbatschev, E. Bibikova   +3 more
doaj   +1 more source

P–T conditions of metapelites from metamorphic complexes in Aysen, Chile

Journal of South American Earth Sciences, 2005
Pressure and temperature metamorphic conditions were determined for K-white mica and chlorite in metapelites from the eastern Andean metamorphic complex (EAMC) and from the Chonos metamorphic complex (CMC) of southern Chile. The Kubler index (KI) of K-white micas was measured on a
RAMIREZ SANCHEZ E., HERVE F., KELM U., SASSI, RAFFAELE   +3 more
openaire   +4 more sources

P-T conditions of Pan-African orogeny in southeastern Nigeria [PDF]

Central European Geology, 2008
Abstract Different rock types from the area northeast of Obudu, southeastern Nigeria were investigated in order to place constraints on their metamorphic conditions. Detailed petrographic studies indicate four main rock groups in the studied area, namely migmatitic gneiss, migmatitic schist, granite gneiss and a minor amount of amphibolite, metagabbro ...
Ephraim, Bassey E., Ekwueme, Barth N., Moazzen, Mohssen, Modjarrad, Monir   +3 more
openaire   +2 more sources

More On P-Union and P-Intersection of Neutrosophic Soft Cubic Set [PDF]

Neutrosophic Sets and Systems, 2017
The P-union ,P-intersection, P-OR and P-AND of neutrosophic soft cubic sets are introduced and their related properties are investigated. We show that the P-union and the P-intersection of two internal neutrosophic soft cubic sets are also internal ...
R. Anitha Cruz, F. Nirmala Irudayam
doaj   +1 more source

Si-Disordering in MgAl2O4-Spinel under High P-T Conditions, with Implications for Si-Mg Disorder in Mg2SiO4-Ringwoodite

, 2018
A series of Si-bearing MgAl2O4-spinels were synthesized at 1500–1650 °C and 3–6 GPa. These spinels had SiO2 contents of up to ~1.03 wt % and showed a substitution mechanism of Si4+ + Mg2+ = 2Al3+.
Liping Liu, Xi Liu, Xinjian Bao, Qiang He, Wei Yan, Yunlu Ma, Mingyue He, Renbiao Tao, R. Zou   +8 more
semanticscholar   +1 more source

An Experimental and Numerical Study of CO₂–Brine-Synthetic Sandstone Interactions under High-Pressure (P)–Temperature (T) Reservoir Conditions

Applied Sciences, 2019
The interaction between CO2 and rock during the process of CO2 capture and storage was investigated via reactions of CO2, formation water, and synthetic sandstone cores in a stainless-steel reactor under high pressure and temperature. Numerical modelling
Zhichao Yu, Siyu Yang, Keyu Liu, Qingong Zhuo, Leilei Yang   +4 more
doaj   +1 more source

Multiplicity results for an impulsive boundary value problem of p(t)-Kirchhoff type via critical point theory [PDF]

Opuscula Mathematica, 2016
In this paper we obtain existence results of \(k\) distinct pairs nontrivial solutions for an impulsive boundary value problem of \(p(t)\)-Kirchhoff type under certain conditions on the parameter \(\lambda\).
A. Mokhtari, T. Moussaoui, D. O'Regan
doaj   +1 more source

Gemological and Chemical Characterization of Gem-Grade Peridot from Yiqisong, Jilin Province

Crystals
Peridot has a long history and is deeply loved by people for its unique olive-green color. The Yiqisong peridot deposit in Jilin Province is a newly discovered peridot deposit that still deserves systematic research.
Jina Li, Yi Zhao, Bo Xu
doaj   +1 more source

Phase relations of nahcolite and trona at high P-T conditions

Journal of Mineralogical and Petrological Sciences, 2009
Using cold-seal hydrothermal bomb and piston-cylinder apparatus, we have carried out both forward and reversal experiments to investigate the phase boundary between nahcolite (NaHCO3) and trona (NaHCO3·Na2CO3·2H2O). We found that the temperature of this phase boundary remains low at least up to 10 kbar, so that this phase transformation maintains its ...
LIU, Xi, FLEET, Michael E.
openaire   +2 more sources

Carcinomas and Carcinoid Tumors of the Lungs and Bronchi in Children and Adolescents: The EXPeRT Recommendations

Pediatric Blood &Cancer, EarlyView.
ABSTRACT Primary lung carcinomas and bronchial carcinoid tumors (BC) are very rare malignancies in childhood. While typical BC and mucoepidermoid carcinomas are mostly low‐grade, localized tumors with a more favorable prognosis than in adults, necessitating avoidance of overtreatment, adenocarcinomas of the lung are often diagnosed at advanced disease ...
Michael Abele, Calogero Virgone, Michaela Kuhlen, Sabine Irtan, Yves Reguerre, Malgorzata Krawczyk, Ewa Bien, Tal Ben‐Ami, Maja Cesen, Ricardo Lopez‐Almaraz, Andrea Ferrari, Gianni Bisogno, Dominik T. Schneider, Abbas Agaimy, Constantin Lapa, Hubert Ducou le Pointe, Rainer Claus, Catherine Daniel, Ines B. Brecht, Daniel Orbach   +19 more
wiley   +1 more source