Results 71 to 80 of about 123,170 (220)

Application of X-ray Diffraction, X-ray Fluorescence Spectrometry and Electron Microprobe in the Identification of Basalt

Yankuang ceshi, 2015
Basalt identification is usually performed by microscope, so the appraisal results are easily influenced by personal professional level and subjective factors.
XU Nai-cen, SHEN Jia-lin, ZHANG Jing
doaj   +1 more source

Hydrochemical Characteristics of Four Retreating Glacier Forefields Off the Coast of Admiralty Bay (King George Island, Maritime Antarctic): Diverse Sources of Metals and Metalloids

Land Degradation &Development, EarlyView.
ABSTRACT This study examines the impact of geological, marine and anthropogenic sources on metal and metalloid concentrations in the forefields of four glaciers (Ecology, Sphinx, Tower and Windy) on King George Island, Antarctic. Water samples were collected at the beginning and end of the hydrological season (austral summer, December 2021 to February ...
Joanna Potapowicz, Krystyna Kozioł, Joanna Plenzler, Robert Józef Bialik, Justyna Dudek, Marcin Frankowski, Anetta Zioła‐Frankowska, Sara Lehmann‐Konera, Żaneta Polkowska   +8 more
wiley   +1 more source

Significant impact of lithogenic dissolution from subantarctic volcanic islands on the regional marine silicon cycle

Limnology and Oceanography, EarlyView.
Abstract Silicic acid controls the production of diatoms, a predominant phytoplankton in the Southern Ocean. Diatoms are major contributors to the biological carbon pump, which is particularly active in the Southern Ocean as well as in areas naturally enriched in iron, such as around the Kerguelen Plateau.
Edwin Cotard, Valentin Deteix, Frédéric Vivier, Arnaud Dapoigny, Sandrine Caquineau, Damien Cardinal   +5 more
wiley   +1 more source

Helium Isotope Geochemistry of Mantle Xenoliths and Cenozoic Basalts in Jeju Island, South Korea [PDF]

, 2020
Dong-Hwan Kim, Hyunwoo Lee, Jonguk Kim, Jihye Oh, Finlay M. Stuart   +4 more
openalex   +1 more source

Recent Developments in Sustainable Composites for Printed Circuit Boards (PCBs): A Review

Macromolecular Materials and Engineering, EarlyView.
This review presents the potential of using natural plant fibers and biodegradable polymers as sustainable printed circuit boards (PCBs). This review provides future directions in innovation and sustainable PCBs development. Bio‐composites PCBs are both environmentally friendly and sustainable due to the natural fibres they contain.
Erdem Selver, Ayca Dogrul Selver, Angela Daniela La Rosa, Abu Saifullah, Zhongyi Zhang, Stephen Driver, Jack Herring, Hom Nath Dhakal   +7 more
wiley   +1 more source

Shear Behavior of Basalt Fiber Reinforced Concrete Beams with and without Basalt FRP Stirrups

, 2016
This paper examines the shear strength and behavior of concrete beams reinforced with basalt fiber-reinforced polymer (basalt FRP) bars with and without shear reinforcements. Six 200×300  mm (8×12  in.) and six 300×200  mm (12×8  in.) concrete beams were,
M. Issa, Thilan Ovitigala, M. Ibrahim
semanticscholar   +1 more source

Successive Mechanical Recycling of Poly(lactic Acid) by Injection Molding: Evolution of Molecular, Thermal, and Mechanical Properties

Macromolecular Materials and Engineering, EarlyView.
This study investigated how successive injection molding recycling affects the properties of poly(lactic acid) (PLA). Gel permeation chromatography showed a two‐thirds molar mass reduction after ten reprocessing cycles. Differential scanning calorimetry revealed lower glass transition and cold crystallization temperatures.
László Lendvai, Virág Luca Bódi, Martin Danko, Petar Sabev Varbanov, Sándor Kálmán Jakab   +4 more
wiley   +1 more source

Modified basalt material reinforced organic coatings: A review

Corrosion Communications
Natural basalt can be processed into rod-like basalt fibers (BFs) and flake-like basalt scales (BSs) through high-temperature melting, forming and other processes. BFs and BSs have great application prospects in the field of organic coatings. BFs possess
Guangguang Xiang, Hongpeng Zheng, Bing Lin, Yingying Wang, Hailong Zhang, Dan Wang, Junlei Tang, Li Liu, Fuhui Wang   +8 more
doaj   +1 more source

Local geological sections and regional stratigraphy based on physical geology and chemical stratigraphy of the Serra Geral Group from Araraquara to Avaré, SP

Brazilian Journal of Geology, 2018
: From Araraquara to Avaré, in the Serra Geral Group outcropping area, 22 detailed geological sections were elaborated. The stratigraphic relationships and the chemical analysis allowed the identification of seven [P2O5] basalt classes, all of them ...
Amélia João Fernandes, Francisco de Assis Negri, José Maria Azevedo Sobrinho, Valdecir de Assis Janasi   +3 more
doaj   +1 more source

Experimental Modal Analysis‐Driven Gaussian Process Regression Modeling of Rectangular Steel Beams With Various Hole Geometries

International Journal of Mechanical System Dynamics, EarlyView.
ABSTRACT Understanding the dynamic behavior of structural components is crucial for optimizing performance and ensuring structural integrity. This study presents a new method that combines a systematic experimental investigation of four distinct hole geometries (circular, square, compact rectangular, and long rectangular) with varying hole counts, all ...
Amir Hossein Rabiee, Majid Rajaei, Mohammad Hossein Mahdavi Nasab, Parsa Shafiei   +3 more
wiley   +1 more source