Results 101 to 110 of about 141,172 (269)

Is the Deep Martian Mantle Heterogeneous? A Reappraisal of Seismological Evidences

Geophysical Research Letters
It has been proposed that the deep Martian mantle contains distributed heterogeneities preserved since the accretion of the planet. This result relies on a multiple‐scattering interpretation of frequency‐dependent arrival times of P‐waves detected in the
L. Margerin
doaj   +1 more source

Accessory Cavitated Uterine Malformation (ACUM): A Case Series

Journal of Clinical Ultrasound, EarlyView.
Accessory cavitated uterine malformation (ACUM) can be misdiagnosed as other uterine pathologies, such as mullerian anomalies, adenomyosis or fibroids. Imaging, particularly gynecological ultrasound plays a fundamental role in identifying this condition.
Luis Felipe Aravena, Roberto Albinagorta, Colomba Spatafore, Arelana Balazs, Yanire Bontemps, Rafael Salazar, Ignacio Brunel, Rodrigo Orozco, Juan Luis Alcázar   +8 more
wiley   +1 more source

Prolactin and Triiodothyronine Modulate Seasonal Variation in Brown Adipose Tissue in Djungarian Hamsters

Journal of Experimental Zoology Part A: Ecological and Integrative Physiology, EarlyView.
ABSTRACT Seasonal photoperiodic cycles regulate energy rheostasis in many animals. Brown adipose tissue (BAT) and the liver are key metabolic organs that show remarkable plasticity in response to photoperiodic conditions. Prolactin (PRL) and thyroid hormones are endocrine signals that transmit neural‐derived photoperiodic time measurement encoding to ...
Sayantan Sur, Grace Payling, Calum Stewart, Avalene Tan, Caitlin Diggle, Tyler J. Stevenson   +5 more
wiley   +1 more source

Noble gases in the Cameroon line and the He, Ne, and Ar isotopic compositions of high mu (HIMU) mantle

, 1999
Ultramafic xenoliths, basaltic lavas, and CO2 gases from the Cameroon line volcanic chain provide the first characterization of combined He, Ne, and Ar isotopes in a high-time-integrated 238U/204Pb = μ (HIMU) magmatic system. Helium isotopic compositions
Alex N. Halliday, Barfod, Dan N., Dan N. Barfod, Halliday, AN, J. Godfrey Fitton, Barfod, D. N., Ballentine, Chris J., Fitton, J. G., Halliday, Alex, Barfod, DN, Fitton, J. Godfrey, Ballentine, C. J., Halliday, A. N., Chris J. Ballentine, Fitton, JG, Ballentine, CJ, Halliday, Alex N.   +16 more
core   +1 more source

Deglaciation of the Burren glacio‐karst, western Ireland, during Termination 1: Implications for North Atlantic climate and karstification

Journal of Quaternary Science, EarlyView.
Abstract The Burren uplands in western Ireland form one of the most extensive and best‐preserved examples of glacio‐karst in Europe. Subsumed by the Irish ice sheet during the Late Pleistocene, granite erratic boulders and in situ silica veins in the limestone bedrock provide a rare opportunity to reconstruct the timing and rate of deglaciation ...
Gordon Bromley, Colin Bunce, Brenda Hall, Aaron Putnam, Frank McDermott   +4 more
wiley   +1 more source

Stability of (Mg,Fe)SiO3 perovskite and the structure of the lowermost mantle

, 1992
Thermodynamic analysis shows that (Mg,Fe)SiO3 perovskite is stable throughout the likely pressure, temperature and compositional regime of the Earth's mantle.
Bukowinski, MST, Stixrude, L
core  

The Zagros Core: Deformation of the continental lithospheric mantle

The Zagros of Iran form one of the youngest collisional orogenic belts on Earth. At shallow depths, shortening across the Zagros is accommodated by folding in the sediments, high-angle thrust faulting in the basement and thickening of the lower crust ...
Barron, J., Debayle, E., McKenzie, D. P., Tatar, M., Priestley, K. F.   +4 more
core   +1 more source

Jewelled Byzantine and Medieval Reliquaries of the True Cross: Peridots and Other Gemstones in Material and Symbolic Perspective

Journal of Raman Spectroscopy, EarlyView.
An interdisciplinary in situ study of jewelled reliquaries of the True Cross integrates gemmology and portable analytical techniques, revealing new evidence on the identification and symbolic role of peridots and other gemstones. ABSTRACT Jewelled crosses containing relics of the True Cross occupy a central position in the devotional, artistic and ...
Stefania Martiniello, Stefano Legnaioli, Simona Raneri   +2 more
wiley   +1 more source

CaSiO3 perovskite at lower mantle pressures

, 2005
We investigate by first-principles the structural behavior of CaSiO3 perovskite up to lower mantle pressures. We confirm that the cubic perovskite modification is unstable at all pressures.
Price, GD, Wentzcovitch, R, Caracas, R, Brodholt, J   +3 more
core  

The tectonic evolution of mantle rocks from the lizardophiolite complex, South-West England [PDF]

, 1999
In SW England, a highly deformed and metamorphosed assemblage of ultramafic, mafic and granitic rocks is interpreted to represent a fragment of upper mantle and lower oceanic crust: the Lizard Ophiolite Complex.
Cook, Charles Andrew
core