Results 61 to 70 of about 431,023 (337)

Rare earth element characteristics of pyrope garnets from the Kaavi-Kuopio kimberlites - implications for mantle metasomatism [PDF]

open access: yesBulletin of the Geological Society of Finland, 2005
Peridotitic garnet xenocrysts from five kimberlite pipes in the Kaavi-Kuopio area of eastern Finland have been studied using major and trace element geochemistry to obtain information on the stratigraphy, compositional variability and evolutionary ...
M. Lehtonen
doaj   +1 more source

Age really is an issue [PDF]

open access: yes, 2010
The majority of the source and reservoir rocks for the hydrocarbons in North Sea and the North West Shelf are Jurassic (200–146 Ma) in age. In both the exploration and production phases, the study of palynology, especially fossil dinoflagellate cysts ...
Mantle, Daniel, Riding, James
core  

142Nd/144Nd Inferences on the nature and origin of the source of high 3He/4He magmas [PDF]

open access: yes, 2017
High-precision measurements of 142Nd/144Nd in picrites from the Baffin Bay region that contain the highest 3He/4He ratios yet measured in terrestrial mantle-derived rocks are indistinguishable from the value measured in the terrestrial standard and other
Carlson, R.W.   +3 more
core   +1 more source

Combination Immunotherapy as a Promising Strategy to Overcome Immunotherapy Resistance: From Emergence to Next‐Generation Approaches

open access: yesAdvanced Science, EarlyView.
This review examines emerging combination immunotherapy strategies tailored to distinct tumor microenvironments and highlights next‐generation biomarkers that guide response prediction and treatment personalization. It integrates lessons from unsuccessful trials, addresses toxicity challenges, and outlines approaches for early biomarker discovery and ...
Asmita Pandey   +6 more
wiley   +1 more source

Melting of CaSiO3 Perovskite at High Pressure

open access: yesGeophysical Research Letters, 2019
Ab initio molecular dynamics simulations predict that CaSiO3 perovskite melts at 5600 K at 136 GPa, and 6400 K at 300 GPa, significantly higher than MgSiO3 perovskite. The entropy of melting (1.8 kB per atom) is much larger than that of many silicates at
James Braithwaite, Lars Stixrude
doaj   +1 more source

The elastic constants of MgSiO3 perovskite at pressures and temperatures of the Earth's mantle

open access: yes, 2009
The temperature anomalies in the Earth's mantle associated with thermal convection1 can be inferred from seismic tomography, provided that the elastic properties of mantle minerals are known as a function of temperature at mantle pressures.
AR Oganov   +29 more
core   +1 more source

Inferences of mantle viscosity based on ice age data sets: Radial structure [PDF]

open access: yes, 2016
We perform joint nonlinear inversions of glacial isostatic adjustment (GIA) data, including the following: postglacial decay times in Canada and Scandinavia, the Fennoscandian relaxation spectrum (FRS), late-Holocene differential sea level (DSL ...

core   +2 more sources

Tumor‐Induced Splenic Remodeling: Mechanisms of Systemic Immunosuppression and Emerging Therapeutic Opportunities

open access: yesAdvanced Science, EarlyView.
ABSTRACT Despite the transformative impact of cancer immunotherapies such as immune checkpoint blockade, durable clinical responses remain limited. Increasing evidence indicates that antitumor immunity is governed not only by the tumor microenvironment, but also by systemic immune regulation mediated by peripheral immune organs. Among these, the spleen
Yuehua Liu, Xiaoqian Nie, Xiaofei Gao
wiley   +1 more source

Seismic tomography of the mantle and primary hydrogen deposits in the Dnieper-Donetsk basin

open access: yesГеофизический журнал, 2022
According to the three-dimensional P-velocity model of the mantle under Eurasia obtained by the Taylor approximation method, the analysis of the velocity structure of the mantle (to depths of 2500 km south of 50° N and 1700 km north) in the territory of
T.O. Tsvetkova   +2 more
doaj   +1 more source

Simultaneous inversion of mantle properties and initial conditions using an adjoint of mantle convection [PDF]

open access: yes, 2008
Through the assimilation of present-day mantle seismic structure, adjoint methods can be used to constrain the structure of the mantle at earlier times, i.e., mantle initial conditions.
Gurnis, Michael, Liu, Lijun
core  

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