Results 31 to 40 of about 78,343 (295)

Diversity and distribution of extracellular microcrystals in holothuroid echinoderms

Royal Society Open Science
Biomineralization research in echinoderms has been focused on skeletal structures, which provide strength and protection. Other minerals, specifically extracellular microcrystals, are described here for the first time in echinoderms. Six morphotypes were
Kevin C. K. Ma, Fei Gao, Jean-François Hamel, Annie Mercier   +3 more
doaj   +1 more source

Ancient Microbial Activity in Deep Hydraulically Conductive Fracture Zones within the Forsmark Target Area for Geological Nuclear Waste Disposal, Sweden

Geosciences, 2018
Recent studies reveal that organisms from all three domains of life—Archaea, Bacteria, and even Eukarya—can thrive under energy-poor, dark, and anoxic conditions at large depths in the fractured crystalline continental crust.
Henrik Drake, Magnus Ivarsson, Mikael Tillberg, Martin J. Whitehouse, Ellen Kooijman   +4 more
doaj   +1 more source

New insight into the stability of CaCO3 surfaces and nanoparticles via molecular simulation [PDF]

, 2014
Using updated and improved atomistic models for the polymorphs of calcium carbonate and their constituent ions in solution, we revisit the question of surface energetics and nanoparticle stability.
Quigley, David, Bano , Anthony M., Rodger , P. Mark   +2 more
core   +1 more source

Application of ASTER Data for Differentiating Carbonate Minerals and Evaluating MgO Content of Magnesite in the Jiao-Liao-Ji Belt, North China Craton

Remote Sensing, 2022
Numerous reports have successfully detected or differentiated carbonate minerals such as calcite and dolomite by using the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER).
Young-Sun Son, Gilljae Lee, Bum Han Lee, Namhoon Kim, Sang-Mo Koh, Kwang-Eun Kim, Seong-Jun Cho   +6 more
doaj   +1 more source

Frictional properties and microstructure of calcite-rich fault gouges sheared at sub-seismic sliding velocities [PDF]

, 2014
We report an experimental and microstructural study of the frictional properties of simulated fault gouges prepared from natural limestone (96 % CaCO3) and pure calcite.
Structural geology and EM, Spiers, C.J., ISES: New frontiers in focused Ion beam, de Bresser, J.H.P., de Winter, D.A.M., Sub Biomolecular Imaging, ISES: Frictional behaviour of calcite-rich fault rocks & implications for seismicity in carbonate terrains, Niemeijer, A.R., Verberne, B.A., Plümper, O., Experimental rock deformation   +10 more
core   +1 more source

Characterization of Stone from Jošanica Quarry and the Possibility of Its Application

Engineering Proceedings
This study presents a chemical and mineralogical analysis of stone samples from Jošanica quarry collected from three different locations—Field A, Field B, and Field C. Mineralogical analyses were conducted using XRD analysis.
Dragica Lazić, Dragana Kešelj, Gordana Ostojić, Milenko Smiljanić, Nebojša Vasiljević, Pavle Lončar   +5 more
doaj   +1 more source

The Influence of Vibration on CaCO3 Scale Formation in Piping System

MATEC Web of Conferences, 2016
Carbonate scale is a common problem found in a piping system of industrial process. The presence of mechanical equipment such as turbine, compressor, blower, mixer and extruder produce a mechanical vibration on the piping system which is placed near ...
Mangestiyono W., Muryanto S., Jamari J., Bayuseno A.P.   +3 more
doaj   +1 more source

Flax Composites With Improved Interfacial Strength Through Microbially Induced Mineral Precipitation

Advanced Materials, EarlyView.
A bio‐inspired biomineralization strategy introduces an additional hierarchy to flax fiber composites. By controlling microbe‐mediated mineral particle deposition through tuned salt concentrations, stress transfer within the natural fiber composite is enhanced.
Deniz Sayinbas, Ingo Nettersheim, Jeong‐Joo Oh, Marie‐Eve Aubin‐Tam, Julie Teuwen, Kunal Masania   +5 more
wiley   +1 more source

A Pentaradial and Bilateral Combined Photoreception System in the Sea Cucumber is Mediated by a Blue Light‐Sensitive R‐Opsin

Advanced Science, EarlyView.
The sea cucumber Holothuria leucospilota detects blue and adjacent wavelengths of light via an r‐opsin with a maximum absorption at 459 nm. In the oral tentacles, papillae, and tube feet, distinct light‐sensing structures with specialized morphologies are formed, constituting a unique pentaradial and bilateral combined photoreception system.
Jiasheng Huang, Chunhua Ren, Zhou Qin, Yimeng Cui, Bingbing Zhang, Peng Luo, Xuan Wang, Yaoqi Xie, Xin Zhang, Aifen Yan, Yang Zhang, Dingding Fan, Yang Liu, Wenjie Pan, Xiao Jiang, Lihong Yuan, Haipeng Qin, David M. Irwin, Chaoqun Hu, Yang Liu, Ting Chen   +20 more
wiley   +1 more source

Application of Microbial Induced Calcite Precipitation (MICP) Technology in Geotechnical and Geo-Environmental Engineering: A Review

Arid Zone Journal of Engineering, Technology and Environment, 2021
One of the most recent areas of research in geotechnical and geo-environmental engineering is bio-mineralization, a natural process in living organisms, also known as Microbial Induced Calcite Precipitation.
I. S. Muhammad, B. B. Kurna , B. S. U. Ibn Abubakar   +2 more
doaj