Results 51 to 60 of about 375,479 (331)

Effects of atmospheric CO2 consumption on rock weathering in the Pearl River basin, China [PDF]

E3S Web of Conferences, 2019
Atmospheric CO2 is absorbed and dissolved in water via karst processes not only in carbonate rock areas, but in all rock areas of the earth. The chemical and isotopic analysis results, particularly of strontium, for water samples collected from eleven ...
Qin Xiaoqun, Jiang Zhongcheng, Zhang Liankai, Huang Qibo, Liu Pengyu   +4 more
doaj   +1 more source

Magnetic Materials Enriched with Strontium: a Study of the use as Catalysts in the Transesterification Reaction of Babassu Oil [PDF]

Materials Research
This work described a new magnetic material enriched with strontium as catalyst to produce babassu biodiesel. The use of magnetic materials has attracted attention due to easy and fast separation from reaction medium.
Wiury Chaves de Abreu, Ana Flávia Moraes, Roberta Yonara Nascimento Reis, Bernardo Ferreira Pinto, Carla Verônica Rodarte de Moura, Sabrina Nicolodi, Edmilson Miranda de Moura   +6 more
doaj   +2 more sources

Assessing Sedimentary Boundary Layer Calcium Carbonate Precipitation and Dissolution Using the Calcium Isotopic Composition of Pore Fluids

Frontiers in Earth Science, 2021
We present pore fluid geochemistry, including major ion and trace metal concentrations and the isotopic composition of pore fluid calcium and sulfate, from the uppermost meter of sediments from the Gulf of Aqaba (Northeast Red Sea) and the Iberian Margin
Daniel H. James, Harold J. Bradbury, Gilad Antler, Gilad Antler, Zvi Steiner, Zvi Steiner, Alec M. Hutchings, Xiaole Sun, Raoul Saar, Mervyn Greaves, Alexandra V. Turchyn   +10 more
doaj   +1 more source

Strontium carbonate in glazes from the SiO2–Al2O3–CaO–MgO–Na2O–K2O system, sintering and surface properties

Open Ceramics, 2022
In this study, the influence of the addition of SrO on sintering and selected parameters of the surface of the glazes from the SiO2–Al2O3–CaO–MgO–Na2O–K2O system were examined.
K. Kaczmarczyk, J. Partyka, K. Pasiut, J. Michałek   +3 more
doaj  

Comprehensive Groundwater Quality Analysis in Chronic Kidney Disease of Unknown Etiology (CKDu) Prevalence Areas of Sri Lanka to Investigate the Responsible Culprit

Journal of Chemistry, 2022
Chronic kidney disease of unknown etiology (CKDu) is a serious health problem in Sri Lanka especially among agricultural communities in dry zone since 19th century. In the present study, several water quality parameters were studied in well water samples
T. D. Fernando, Yohan L. N. Mathota Arachchige, K. V. P. Sanjeewani, R. A. M. T. S. Rajaguru   +3 more
doaj   +1 more source

An efficient strategy for producing RNA‐free Nucleocapsid protein of SARS‐CoV‐2 for biochemical and structural investigations

FEBS Open Bio, EarlyView.
Cleavable N‐terminal Thioredoxin fusion enabled soluble expression and purification of otherwise insoluble SARS‐CoV‐2 Nucleocapsid (N) protein. A four‐step purification strategy yielded highly homogeneous, RNA‐free N protein. Binding assays showed high RNA affinity (Kd ~ 28 nm). The study will facilitate high‐resolution structural studies of N protein,
Shweta Singh, Gagan D. Gupta
wiley   +1 more source

Development of Ternary Magnesium Alloys for Laser Powder Bed Fusion: Optimizing Oxide Layer Thickness

Advanced Engineering Materials, Volume 27, Issue 14, July 2025.
Additive manufacturing of magnesium alloys by laser is difficult because the melting point of the oxide layer is much higher than the evaporation temperature of the metal underneath. Making the oxide layer thinner can solve this problem. Alloying magnesium with strontium makes the oxide layer thinner, especially at 0.5 wt%.
Elmar Jonas Breitbach, Stefan Julmi, Sabine Behrens, Tatiana Blank, Arvid Abel, Nicole Emminghaus, Ludger Overmeyer, Christian Klose, Hans Jürgen Maier   +8 more
wiley   +1 more source

Combining Metal Additive Manufacturing and Casting Technology: High Performance Cooling Channels for Electric Powertrain Components

Advanced Engineering Materials, EarlyView.
When realized as inserts in high‐pressure die casting, aluminum cooling channels for electric powertrain components and similar applications typically require a stabilizing filler to survive the process. The present study investigates relinquishing this filler using additively manufactured inserts promising performance improvements.
Dirk Lehmhus, Gefei Li, Martin Czekalla, Leonardo Fernandes Gomes, Christoph Pille, Hermann Pleteit, Adrian Struss, Keno Toussaint, Andre Irretier, Münip Dalgic   +9 more
wiley   +1 more source

Improving Surface Quality of Titanium Electrodeposition from a Deep Eutectic Solvent with Organic and Inorganic Additives

Advanced Engineering Materials, EarlyView.
Herein, the electroplating of titanium from an organic solvent, ethaline, is shown. Polymer additives are shown to smooth the roughness of the film, and small molecule additives are shown to produce a near‐mirror finish to the deposited metal. Titanium electroreduction is desired for a variety of medical, electronic, and bonding applications but has ...
Steven Livers, Christopher Chancellor, Katarzyna Grubel, Diana Horangic, Riah Burnett, Bailey Byrd, Christina Arendt, Lance Hubbard   +7 more
wiley   +1 more source

Strontium Is Released Rapidly From Agricultural Lime–Implications for Provenance and Migration Studies

Frontiers in Ecology and Evolution, 2021
The use of strontium isotopes in pre-historic mobility studies requires accurate isoscapes for evaluating whether pre-historic individuals are local to the areas in which they were buried or not.
Rasmus Andreasen, Erik Thomsen
doaj   +1 more source