Results 21 to 30 of about 76,744 (285)

Enhanced corrosion resistance of metal surfaces by film forming amines: A comparative study between cyclohexanamine and 2-(diethylamino)ethanolbased formulations

open access: yesWater Resources and Industry, 2018
The use of recycled process water in steam crackers leads to the accumulation of corrosive impurities, hence the need for adequate treatment. Two corrosion inhibitor formulations containing N-[(9Z)−9-octadecen-1-yl]−1,3-propanediamine (N-oleyl-1,3 ...
Erica Pensini   +4 more
doaj   +1 more source

The Orivesi granite batholith, Southern Central Finland - characteristics and emplacement [PDF]

open access: yesBulletin of the Geological Society of Finland, 1996
The Orivesi granite batholith is situated in an E-W trending belt of granite intrusions along the southern margin of the Central Finland Granitoid Complex (CFGC).
O. Selonen, C. Ehlers
doaj   +1 more source

Eighth Grade Students' Understandings of Groundwater [PDF]

open access: yes, 2004
According to national standards, eighth graders should possess appropriate understandings regarding groundwater and its role in the hydrologic cycle. This article describes a study of eighth-grade students to determine what types of ideas eighth graders ...
Daniel Dickerson, Karen Dawkins
core   +1 more source

Facies and sedimentary environment of the Lower Cretaceous transgressive siliciclastic and carbonate succession in the southwestern margin of central Iran, northeast of Isfahan [PDF]

open access: yesJournal of Stratigraphy and Sedimentology Researches, 2018
Introduction In this study, successions including red beds siliciclastic and the carbonate rocks of Lower Cretaceous sequence is studied at Kuh-e-Bejareh in the south western margin of Central East Iranian Microcontinent.
Zahra Mazroei Sebdani   +3 more
doaj   +1 more source

The Upper Cretaceous intrusive rocks with extensive crustal contribution in Hacımahmutuşağı Area (Aksaray/Turkey)

open access: yesGeologica Carpathica, 2019
The Hacımahmutuşağı area (Aksaray/Turkey) is located in the western part of the Central Anatolian Crystalline Complex (CACC). Gneiss and marble compose the basement units, while intrusive rocks are gabbros and granitoids.
Köksal Serhat
doaj   +1 more source

A Prehispanic Maya Pit Oven? Microanalysis of Fired Clay Balls from the Puuc Region, Yucatán, Mexico [PDF]

open access: yes, 2013
This is a postprint (author's final draft) version of an article published in Journal of Archaeological Science in 2013. The final version of this article may be found at http://dx.doi.org/10.1016/j.jas.2012.10.014 (login may be required).
Berna, Francesco   +2 more
core   +2 more sources

Deformation in Moffat Shale detachment zones in the western part of the Scottish Southern Uplands [PDF]

open access: yes, 2004
A study of the décollement zones in the Moffat Shale Group in the Ordovician Northern Belt of the Southern Uplands of Scotland reveals a progressive sequence of deformation and increased channelization of fluid flow.
Needham, D.T.
core   +1 more source

Middle and Late Pleistocene environmental history of the Marsworth area, south-central England [PDF]

open access: yes, 2014
To elucidate the Middle and Late Pleistocene environmental history of south-central England, we report the stratigraphy, sedimentology, palaeoecology and geochronology of some deposits near the foot of the Chiltern Hills scarp at Marsworth ...
Adamiec   +137 more
core   +2 more sources

Characterization of nanoparticle transport through quartz and dolomite gravels by magnetic resonance imaging [PDF]

open access: yes, 2015
Magnetic resonance imaging (MRI) has tremendous potential for revealing transport processes in engineered and geologic systems. Here, we utilize MRI to image nanoparticle (NP) transport through a saturated coarse-grained system.
Holmes, W.M.   +3 more
core   +2 more sources

Luminescência opticamente estimulada em pastilhas de quartzo utilizando iluminação azul e verde

open access: yesBrazilian Journal of Radiation Sciences
In this study, pellets fabricated from powdered rose quartz are investigated for their potential as ionizing radiation detectors, taking advantage of the abundant availability of quartz in the Earth's crust.
Neilo Marcos Trindade   +4 more
doaj   +1 more source

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