Results 41 to 50 of about 20,878 (239)

Sedimentary Mercury Enrichments as a Tracer of Large Igneous Province Volcanism

open access: yesGeophysical Monograph Series, Page 247-262., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Lawrence M. E. Percival   +3 more
wiley  

+4 more sources

FTIR spectroscopic investigation of alkali-activated fly ash: Atest study

open access: yesZaštita Materijala, 2018
Fly ash is byproduct of thermal power plants. Millions tons of fly ash is produced globally. Fly ash is disposed partly in landfills but it could also be released into the atmosphere in the past.
Armand Çomo, Fatos Ylli
doaj   +1 more source

Potassium Migration of Chestnut Shell Ashes Under Oxidizing Atmosphere and Its Modification Mechanism by Additives

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT Biomass energy plays a critical role in alleviating environmental pressures. However, its relatively high content of alkali metals (especially for potassium) would cause ash‐related issues during combustion. To mitigate these issues, the potassium migration behaviors during chestnut shell (CS) conversion and the modification mechanisms of ...
Meijie Zhou   +6 more
wiley   +1 more source

Potential of Cymbopogon flexuosus Steud Wats for green capping and economic utilization of coal fly ash dump sites

open access: yesDiscover Environment
Present study was conducted to assess the possibility of growing Cymbopogon flexuosus Steud Wats for green capping and economic utilization of fly ash dump sites. In this regard a pot experiment was conducted with ten treatments in three replications i.e.
Akhilesh Kumar   +2 more
doaj   +1 more source

A proximodistal gradient in bone structure and mechanics in the wings of Seba's short‐tailed bat, Carollia perspicillata

open access: yesThe Anatomical Record, EarlyView.
Abstract Bats possess the remarkable ability to fly, and with this, distinctive wing bone properties. We investigated the structural, mechanical, and compositional properties of the humerus, radius, metacarpals, and proximal and middle phalanges of Carollia perspicillata, an approximately 15 g fruit‐eating bat native to the Neotropics.
Xiaoxiang Ma   +4 more
wiley   +1 more source

Influence of Brazilian fly ash fineness on the cementing efficiency factor, compressive strength and Young's modulus of concrete

open access: yesDevelopments in the Built Environment, 2023
This work investigates the cementing efficiency, determined by the k-value, of a Brazilian fly ash. The analyzed variables are the fly ash fineness and content, the water content in the mixtures and age of concrete. Further, the influence of the fineness
Margareth da Silva Magalhães   +2 more
doaj   +1 more source

Optimization of Magnesium Potassium Phosphate Cements Using Ultrafine Fly Ash and Fly Ash

open access: yesACS Sustainable Chemistry & Engineering, 2023
The effect of ultrafine fly ash (UFA) and fly ash (FA) on the physical properties, phase assemblage, and microstructure of magnesium potassium phosphate cement (MKPC) was investigated. This study revealed that the UFA addition does not affect the calorimetry hydration peak associated with MKPC formation when normalized to the reactive components (MgO ...
Tan, Y.   +7 more
openaire   +3 more sources

Dysregulation of U12‐Type Splicing in Lupus Neutrophils

open access: yesArthritis &Rheumatology, Accepted Article.
Abstract. Objective Neutrophil dysfunction is a hallmark of systemic lupus erythematosus (SLE), but its molecular basis remains unclear. This study explores transcriptional and post‐transcriptional changes in low‐density granulocytes (LDGs), a proinflammatory neutrophil subset expanded in SLE, focusing on NADPH oxidase (Nox) function and minor intron ...
Luz P. Blanco   +11 more
wiley   +1 more source

Influence of ammonia-contaminated fly ash from selective catalytic reduction process on the properties of Portland-fly ash blended cement and geopolymer composites

open access: yesCase Studies in Construction Materials
Fly ash, a by-product of coal-fired power plants, finds valuable application in the cement and concrete industry due to its pozzolanic properties.
Teewara Suwan   +5 more
doaj   +1 more source

Utilization of fly ash and bottom ash to increase the value of unconfined compression strength on subgrade

open access: yesTeknika, 2022
Soil is the most important part to support all traffic loads or construction loads placed on it. Soils that have low bearing capacity, such as clay, need stabilization techniques to increase the carrying capacity of the soil.
Woelandari Fathonah   +5 more
doaj   +1 more source

Home - About - Disclaimer - Privacy