Results 11 to 20 of about 34,342 (305)

Biosilicification Drives a Decline of Dissolved Si in the Oceans through Geologic Time

open access: yesFrontiers in Marine Science, 2017
Biosilicification has driven variation in the global Si cycle over geologic time. The evolution of different eukaryotic lineages that convert dissolved Si (DSi) into mineralized structures (higher plants, siliceous sponges, radiolarians, and diatoms) has
Daniel J. Conley   +10 more
doaj   +1 more source

EVALUATION OF FLEXURAL RIGIDITY OF COTTON FABRICS TREATED WITH POLIURETHANE AND ACRILYC RESIN AND MONTMORILLONITE PARTICLES [PDF]

open access: yesAnnals of the University of Oradea: Fascicle of Textiles, Leatherwork, 2020
Textile manufacturers are demonstrating an increasing interest in the application of different types of micro or nanoparticles in order to add new properties to the fabric.
CARETTE Margaux   +4 more
doaj  

Utilization of 29Si MAS-NMR to Understand Solid State Diffusion in Energy Storage Materials

open access: yesFrontiers in Chemical Engineering, 2022
The properties of many solid-state materials arise from critical interfaces tied to the structure, morphology, and composition of the materials under study.
Fulya Dogan, Baris Key, John T. Vaughey
doaj   +1 more source

Amended Silicated for Mercury Control [PDF]

open access: yes, 2006
Amended Silicates{trademark}, a powdered, noncarbon mercury-control sorbent, was tested at Duke Energy's Miami Fort Station, Unit 6 during the first quarter of 2006. Unit 6 is a 175-MW boiler with a cold-side electrostatic precipitator (ESP).
Butz, James   +2 more
core   +1 more source

Effect of Three Commonly Consumed Beverages on Surface Roughness of Polished and Glazed Zirconia-Reinforced Lithium Silicate Glass Ceramics

open access: yesFrontiers in Dentistry, 2019
Objectives: This study aimed to assess the effect of three commonly consumed beverages on surface roughness of polished and glazed zirconia-reinforced lithium silicate (ZLS) glass ceramics.
Farnaz Firouz   +5 more
doaj   +1 more source

Silicates, Silicate Weathering, and Microbial Ecology [PDF]

open access: yesGeomicrobiology Journal, 2001
Mineralogy, microbial ecology, and mineral weathering in the subsurface are an intimately linked biogeochemical system. Although bacteria have been implicated indirectly in the accelerated weathering of minerals, it is not clear if this interaction is simply the coincidental result of microbial metabolism, or if it represents a specific strategy ...
openaire   +1 more source

Optimization of the structure and properties of foam-glass ceramics

open access: yesИнженерно-строительный журнал, 2019
The basic properties of foam-glass ceramics — a porous inorganic material are optimized in the study. This material is used for thermal insulation of various engineering structures: foundations of buildings, roads and railways, pipelines, etc.
Konstantin Ivanov
doaj   +1 more source

Effects of temperature and humidity on adhesion of water scale to glass substrates

open access: yesInternational Journal of Ceramic Engineering & Science, 2021
The formation of silica scales from water on ceramics is a significant problem, and there is an urgent need to develop methods to prevent its formation or to remove it.
Shogo Hayashi   +4 more
doaj   +1 more source

U(VI) Coordination Modes in Complex Uranium Silicates: Cs[(UO6)2(UO2)9(Si2O7)F] and Rb2[(PtO4)(UO2)5(Si2O7)]

open access: yesChemistry, 2022
Crystals of two new inorganic uranyl silicates, Cs[(UO6)2(UO2)9(Si2O7)F] (1) and Rb2[(PtO4)(UO2)5(Si2O7)] (2), were produced from melts in evacuated silica tubes.
Evgeny V. Nazarchuk   +3 more
doaj   +1 more source

Layer silicates in a chondritic porous interplanetary dust particle

open access: yes, 1985
Analytical electron microscopy on individual grains from a portion of a chondritic porous interplanetary dust particle (aggregate W7029C1 from the NASA Johnson Space Center Cosmic Dust Collection) shows that layer silicates compose 50 percent of the ...
Rietmeijer, Frans J.M.   +5 more
core   +1 more source

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