Results 41 to 50 of about 443,219 (282)

A Siklósbodony Sb-1 mélyfúrás feltételezett karbon-perm határképződményeinek ásványtani, kőzettani és geokémiai jellemzői | Mineralogical, petrographic and geochemical characteristics of siliciclastic rocks from the supposed Carboniferous–Permian boundary in borehole Siklósbodony Sb–1, south-western Hungary [PDF]

open access: yes, 2004
A tanulmány a Siklósbodony Sb–1 fúrásban 700 m mélységben feltételezett karbon–perm határ közvetlen környezetéből származó törmelékes üledékes kőzetminták részletes ásványtani, kőzettani és geokémiai jellemzését mutatja be.
Szakmány, György   +2 more
core   +1 more source

Localization features of pyrite-polymetallic ores of the Tushkanikhinskoye deposit (Rudny Altai)

open access: yesРуды и металлы, 2022
The Tushkanikhinskoye deposit is confined to the Devonian basalt-bearing rhyolite calcareous-siliceous-terrigenous formation, which is represented by sedimentary, volcano-sedimentary, sedimentary-volcanogenic, pyroclastic, volcanic rocks of felsic and ...
Tatiana V. Seravina   +4 more
doaj   +1 more source

Conformational Switching of Proteins on Material Surfaces Enabled by Peptide‐Oriented Adsorption

open access: yesAdvanced Functional Materials, EarlyView.
Responsive biointerfaces could be achieved using conformationally responsive proteins; however, their interconversion can be lost upon surface adsorption. Herein, we demonstrate that the incorporation a Au binding peptide into calmodulin allows for binding control on Au wherein the protein retains conformational switching. This capability was confirmed
Sakthirupini Ramamurthy   +7 more
wiley   +1 more source

Characteristics and formation of sinian (Ediacaran) carbonate karstic reservoirs in Dengying Formation in Sichuan Basin, China

open access: yesPetroleum Research, 2021
The Gaoshiti-Moxi Gas Field has been discovered recently in the central part of Sichuan Basin, which might be the biggest gas field in China. In this gas field, a large amount of gas is from Neoproterozoic Sinian (Ediacaran) karstic carbonate rocks.
Lianhua Hou   +3 more
doaj   +1 more source

Electrostatic Superlattices Beyond 1:1 Stoichiometry

open access: yesAdvanced Functional Materials, EarlyView.
Polymer‐mediated charge regulation drives two hierarchical routes to higher‐stoichiometry nanoparticle superlattices. Tuning the polymer's molecular weight promotes progressive interstitial filling, transforming ZnS into the fully occupied CaF2${\rm CaF}_2$ lattice. Exchanging polymer assignment between large and small nanoparticles instead breaks CsCl
Binay P. Nayak   +7 more
wiley   +1 more source

K-feldspar sand-grain provenance in the Triassic, west of Shetland : distinguishing first-cycle and recycled sediment sources? [PDF]

open access: yes, 2009
Sandstone provenance studies can help constrain palaeogeographic reconstructions and ancient drainage system scales and pathways. However, these insights can be obscured by difficulties in geochemically distinguishing or adequately characterising ...
Daly, J. Stephen   +9 more
core   +1 more source

Favorable conditions of inter-salt shale oil formation and key parameters for geological sweet spots evaluation: a case study of Eq34-10 rhythm of Qianjiang Formation in Qianjiang Sag, Jianghan Basin

open access: yesShiyou shiyan dizhi, 2020
The inter-salt fine-grained sedimentary rocks of the Eq34-10 rhythm of the Qianjiang Formation in the Qianjiang Sag, Jianghan Basin, are favorable for shale oil exploration and development.
Zhiming LI   +10 more
doaj   +1 more source

REE characteristics and geological significance of mudstones from Wenchang Formation in eastern Yangjiang Sag of Pearl River Mouth Basin

open access: yes地质科技通报, 2022
The REE in sedimentary rocks have strange chemical stability and can well record the original sedimentary message.In order to explore the material source, tectonic setting and sedimentary environment of the Wenchang Formation in Eastern Yangjiang Sag ...
Chuang Shi
doaj   +1 more source

Chitin‐Derived Carbon‐Metal Functional Materials

open access: yesAdvanced Functional Materials, EarlyView.
Functional carbon materials are synthesized from combination of biopolymer (chitin) and iron precursors. The resultant material exhibits superior surface area and adsorptive properties compared to carbon materials synthesized directly from pure chitin.
Herry Fang   +7 more
wiley   +1 more source

INVESTIGATING AN INNOVATIVE MODEL FOR DIMENSIONAL SEDIMENTARY ROCKS CHARACTERIZATION USING ACOUSTIC FREQUENCIES ANALYSIS DURING DRILLING

open access: yesRudarsko-geološko-naftni Zbornik, 2018
Determining geomechanical characteristics of rocks plays a significant role in all consequent designing stages of geosciences. On the other hand, drilling is one of the considerable operations in primer phases of extracting rocks.
Mojtaba Yari, Raheb Bagherpour
doaj   +1 more source

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