Results 51 to 60 of about 9,850 (232)

Origin of dolomite in Middle Permian Qixia Formation in northwestern Sichuan Basin: a case study of Chejiaba section

Shiyou shiyan dizhi
This study focuses on the origin of dolomite within the Middle Permian Qixia Formation in the northwestern Sichuan Basin by the approaches of petrographic examination and stable isotopic as well as clumped isotopic analysis. Two types of dolomite (matrix
Jie ZENG, Shaofeng DONG
doaj   +1 more source

Columnanidus calitzdorpensis ichnogen. ichnosp. nov: A new Middle Pleistocene subterranean termite trace fossil from South Africa

Journal of Quaternary Science, EarlyView.
ABSTRACT Termites are landscape geo‐engineers whose nesting activities substantially modify the physical and chemical properties of soils. Fossilised termite nests commonly constitute the only identifiable evidence of ancient termite activity and represent valuable trace fossil archives for reconstructing past environments.
Miengah Abrahams, Robert A. Muir, Jorge F. Genise, John E. Almond, Gcinamahlubi Hadebe, John C. Hellstrom, Rabia Jacobs, Chris Harris   +7 more
wiley   +1 more source

Mechanisms of fabric-selective microbialite karst: a case study of second member of Sinian Dengying Formation, Sichuan Basin

Shiyou shiyan dizhi
The microbialite karst reservoirs in the second member of Sinian Dengying Formation, Sichuan Basin, are a recent exploration hotspot, and important exploration breakthroughs have been achieved in the Penglai and Daxingchang areas.
Xingpeng SHAO, Jinmin SONG, Shugen LIU, Gang ZHOU, Zhiwu LI, Yuan HE, Xin JIN, Yuan ZHONG, Yuehao YE, Kunyu LI, Di YANG, Zili ZHANG, Bin WANG, Zhen LEI   +13 more
doaj   +1 more source

Effect of Nitrate Acid Treated Dolomite on the Tensile Properties of Ultra-High Molecular Weight Polyethylene (UHMWPE) Composites [PDF]

Archives of Metallurgy and Materials
Ultra-High Molecular Weight Polyethylene (UHMWPE) polymers have been used in biomedical applications due to its biocompatibility, durability, toughness and high wear resistance. To enhance the mechanical properties, various types of minerals are commonly
S.F.A. Abdullah, S.S. Md Saleh, N.F Mohammad, S.N. Syed Mahamud, M.F. Omar, H.Md Akil, B.P Chang, H.R Saliu, N.H. Rostam, J. Gondro   +9 more
doaj   +1 more source

Decoupling glacier retreat and surface stabilization on the Snežnik Plateau (Slovenia), insights from in situ cosmogenic 36Cl exposure and depth‐profile ages

Journal of Quaternary Science, EarlyView.
ABSTRACT Glaciokarst landscapes pose distinctive challenges for cosmogenic dating because meltwater and runoff can be rapidly rerouted into ponors and conduit networks, weakening glacier–river coupling and promoting local sediment storage. We reconstruct glacier retreat and postglacial stabilization on the Snežnik Plateau (SW Slovenia) using in situ ...
Onur Altınay, Mehmet Akif Sarıkaya, Uroš Stepišnik, Manja Žebre, Cengiz Yıldırım, Attila Çiner, Klaus M. Wilcken   +6 more
wiley   +1 more source

Raman Line Scan Analyses and a New Hypothesis for the Formation of Anatase‐Hosting Microbialites: Study of the Stromatolites From Saint‐Jean‐de‐la‐Rivière, Cotentin, France

Journal of Raman Spectroscopy, EarlyView.
Micrometer analysis of millimeter lines of Raman spectra concludes in the association of anatase and graphitized organic matter (graphogen). The photosynthetic microorganisms at the origin of the microbialites produce O2, which is transformed by TiO2 into reactive species that, in turn, decompose the organic matter of the microorganisms. ABSTRACT Raman
Marie‐Paule Bassez
wiley   +1 more source

Effect of Calcination Temperature on the Hydroxyl Radical Generation of Calcined Dolomite Suspension

Journal of MMIJ, 2018
Recently, calcined dolomite has been used as an anti-bacterial material in various applications for improving public health. Generally speaking, calcined dolomite exhibits anti-bacterial effects due to its strong alkalinity after hydration.
Kazuya HOSHIBA, Josiane PONOU, Gjergj DODBIBA, Hiromu ITO, Tasuku SASE, Hirofumi MATSUI, Toyohisa FUJITA   +6 more
doaj   +1 more source

A Green Amphoteric Surfactant Derived From Rapeseed Oil for Enhanced Oil Recovery From Carbonate Acidic Oil Reservoirs

Journal of Surfactants and Detergents, EarlyView.
The Green Amphoteric Surfactant Derived From Rapeseed Oil for Enhanced Oil Recovery From Carbonate Acidic Oil Reservoirs. ABSTRACT Surfactants with both positive and negative functional groups (amphoteric or zwitterionic) are particularly advantageous in acidic oil reservoirs because they remain stable under harsh chemical conditions, tolerate acidic ...
Iman Nowrouzi, Amir H. Mohammadi, Abbas Khaksar Manshad   +2 more
wiley   +1 more source

Reciprocal relations shape cultural landscapes: Women's environmental stewardship in Ait Bouguemez (High Atlas, Morocco)

People and Nature, EarlyView.
Abstract Mountain social–ecological systems encompass steep ecological gradients and diverse cultural practices, yet the relative roles of these factors in shaping mountain landscapes remain underexplored. In particular, the knowledge and practices of women in coproducing biocultural landscapes are often invisible in the academic literature. In the Ait
Meryem Aakairi, Sara Elgadi, Hamza Zine, Christel Vidaller, Mohamed Cherkaoui, Emmanuel Corcket, Irene Teixidor‐Toneu   +6 more
wiley   +1 more source

Preconditions for the application of petrašiūnai quarry dolomite screenings and dolomite powder in conventional and self-compacting concrete mixes

Engineering Structures and Technologies, 2010
The objective of these experimental studies is to evaluate (verify) the possibility of applying by-products (0/2 mm fraction dolomite screenings or dolomite powder) obtained in the process of producing crushed dolomite from Petrašiūnai dolomite quarry ...
Vitoldas Vaitkevičius, Arminas Štuopys, Ernestas Ivanauskas   +2 more
doaj   +1 more source