Results 21 to 30 of about 42,376 (259)

Studies on the compounds lipids from X-ray irradiated animal,1. [PDF]

open access: yes, 1962
For the purpose to reveal the mechanism of the biological indirect action of X-rays the author has conducted the analysis of the compound lipids of the organs of the rabbits irradiated with X-rays.
Ohara, Sachiko
core   +1 more source

Biological and therapeutic effects of ortho-silicic acid and some ortho-silicic acid-releasing compounds: New perspectives for therapy

open access: yesNutrition & Metabolism, 2013
Silicon (Si) is the most abundant element present in the Earth's crust besides oxygen. However, the exact biological roles of silicon remain unknown. Moreover, the ortho-silicic acid (H4SiO4), as a major form of bioavailable silicon for both humans and ...
Jurkić Lela Munjas   +3 more
doaj   +1 more source

The mineralogy, texture and fluid inclusion characteristics of Meideh silicic zone, north Pariz, Kerman copper belt; investigation of genetic relations with porphyry systems

open access: yesJournal of Economic Geology, 2021
Introduction The widespread Cenozoic magmatic assemblages in Iran host a variety of ore deposits including porphyry Cu-Mo-Au, skarn type ores, and epithermal base and precious metals deposits.
Zeinab Ramezani   +2 more
doaj   +1 more source

Stratigraphy and chronology of the Stent tephra, a c. 4000 year old distal silicic tephra from Taupo Volcanic Centre, New Zealand. [PDF]

open access: yes, 1994
Tephrostratigraphic and chronologic studies in two areas of the North Island have identified a previously unrecorded, thin, distal silicic tephra derived from the Taupo Volcanic Centre.
Alloway, Brent V.   +4 more
core   +2 more sources

Large Silicic Eruptions, Episodic Recharge, and the Transcrustal Magmatic System

open access: yesGeochemistry, Geophysics, Geosystems, 2020
Large silicic eruptions result from rapid evacuation of large, upper crustal reservoirs of silicic magmas. These silicic magmas are thought to be replenished by melt extracted from underlying crystal‐rich source mushes, but the timescales and mechanisms ...
Boda Liu, Cin‐Ty Lee
doaj   +1 more source

New Conceptual Model for the Magma-Hydrothermal-Tectonic System of Krafla, NE Iceland

open access: yesGeosciences, 2020
The complexity of the Krafla volcano and its geothermal system(s) has puzzled geoscientists for decades. New and old geoscientific studies are reviewed in order to shed some light on this complexity. The geological structure and history of the volcano is
Knútur Árnason
doaj   +1 more source

Emplacement of the Rocche Rosse rhyolite lava flow (Lipari, Aeolian Islands) [PDF]

open access: yes, 2018
The authors acknowledge Airbus Defence and Space for providing satellite imagery, financial support from Keele University and fieldwork grants from the Mineralogical Society of Great Britain and Ireland and the Volcanic and Magmatic Studies Group.
Bullock, Liam A   +2 more
core   +2 more sources

Iron, silicate, and light co-limitation of three Southern Ocean diatom species [PDF]

open access: yes, 2008
The effect of combined iron, silicate, and light co-limitation was investigated in the three diatom species Actinocyclus sp. Ehrenberg, Chaetoceros dichaeta Ehrenberg, and Chaetoceros debilis Cleve, isolated from the Southern Ocean (SO).
A Abelmann   +50 more
core   +1 more source

New insights on the occurrence of peperites and sedimentary deposits within the silicic volcanic sequences of the Paraná Magmatic Province, Brazil [PDF]

open access: yesSolid Earth, 2014
The PMP (Paraná Magmatic Province) is characterized by lava flows of the Early Cretaceous Serra Geral Formation which covers about 75% of the Paraná Basin (southern and southeastern Brazil), composed of a thick (up to 1600 m) volcanic sequence formed by ...
A. C. F. Luchetti   +4 more
doaj   +1 more source

Using silicon isotopes to understand the role of the Southern Ocean in modern and ancient biogeochemistry and climate [PDF]

open access: yes, 2014
The growth of siliceous phytoplankton, mainly diatoms, in the Southern Ocean influences the preformed nutrient inventory in the ocean on a global scale.
Brzezinski, Mark, Hendry, Katharine
core   +2 more sources

Home - About - Disclaimer - Privacy