Results 61 to 70 of about 16,702 (208)

Six Ca‐Mg‐Fe Carbonate Reference Materials for In Situ Measurement of Oxygen and Carbon Isotope Ratios

open access: yesGeostandards and Geoanalytical Research, Volume 50, Issue 1, Page 155-179, March 2026.
Key Points Six new Ca‐Mg‐Fe carbonate reference materials are available to the global geochemical community for calibrating oxygen and carbon isotope ratios by SIMS. Significant compositional matrix effects were observed in the dolomite‐ankerite and magnesite‐siderite series during SIMS analysis. Compositional matrix effects correlate with Fe variation.
Maria Rosa Scicchitano   +10 more
wiley   +1 more source

Empowering Flexible Electronics with Piezoelectric Nanogenerators: Breakthroughs from Energy Harvesting to Intelligent Sensing

open access: yesAdvanced Science, Volume 13, Issue 7, 3 February 2026.
This review systematically summarizes recent advances in self‐powered flexible sensing and energy storage systems based on piezoelectric nanogenerators (PENGs). It highlights their fundamental mechanisms, structural designs, and applications in health monitoring, e‐skin, and tactile sensing. The integration of PENGs with supercapacitors or batteries is
Wu‐Lin Xin   +8 more
wiley   +1 more source

Effects of F, B2O3 and P2O5 on the solubility of water in haplogranite melts compared to natural silicate melts [PDF]

open access: yes, 1993
The effects of F, B2O3 and P2O5 on the H2O solubility in a haplogranite liquid (36 wt. % SiO2, 39 wt. % NaAlSi3O8, 25 wt. % KAlSi3O8) have been determined at 0.5, 1, 2, and 3 kb and 800, 850, and 900°C.
Behrens, Harald   +2 more
core   +1 more source

Evaluation of evolocumab on saphenous vein graft patency following coronary artery bypass graft surgery in people living with and without diabetes in the NEWTON‐CABG CardioLink‐5 trial

open access: yes
Diabetes, Obesity and Metabolism, EarlyView.
Hwee Teoh   +14 more
wiley   +1 more source

Determination of Twelve Major and Minor Elements in Tourmaline by X-ray Fluorescence Spectrometry with Fusion Sample Preparation

open access: yesYankuang ceshi, 2018
Tourmaline is a class of boron-bearing aluminosilicate minerals. It has a complex chemical component and stable chemical property, and is difficult to decompose by wet methods. The high content of B2O3 makes it difficult to simultaneously determine major
XIA Chuan-bo   +4 more
doaj   +1 more source

A mineral reconnaissance survey of the Abington-Biggar-Moffat-area, south-central Scotland [PDF]

open access: yes, 1979
Panned heavy mineral concentrates, mostly obtained from stream sediments, were collected from 195 sites in the Abington-Biggar-Moffat area. The project area, which lies immediately east of the formerly important mining district of Wanlockhead ...
Dawson, J., Floyd, J.D., Phillip, P.R.
core  

Mineralization Characteristics of the Li‐rich Muscovite Granite in the Mufushan Batholith, Central China: Insights into the Rare Metal Mineralization Models of Batholithic Complex

open access: yesActa Geologica Sinica - English Edition, Volume 100, Issue 1, Page 137-155, February 2026.
Abstract Elucidating the mineralization mechanisms of individual granitic stages and tracing magmatic evolution processes are critical for establishing mineralization models of large‐scale batholiths. The Mufushan granitoid batholith, renowned for multistage magmatism and large‐scale rare metal mineralization, mainly comprises biotite, two‐mica, and ...
Hao ZHANG   +7 more
wiley   +1 more source

Tourmaline 40Ar/39Ar chronology of tourmaline-rich rocks from Central Iberia dates the main Variscan deformation phases

open access: yesGeologica Acta, 2009
During crustal thickening, metapelites taken to depth release boron-bearing hydrothermal fluids because of progressive heating and dehydration. These fluids swiftly percolate upwards, especially if the crust is being actively deformed, to form tourmaline
F. BEA   +4 more
doaj  

Synergism of uncoupler dicoumarin and nonmetallic mineral tourmaline for the sewage sludge treatment process: Reducing sludge generation

open access: yesCleaner Engineering and Technology, 2020
Environmental concerns linked to the recycling of sewage sludge on land involve the hazard of nutrient leaching, impacts on soil biodiversity and greenhouse gas emissions.
Jun Li, Salma Tabassum
doaj   +1 more source

Spectroscopic Characteristics and Color Origin of Red Tourmaline from Brazil

open access: yesJournal of Spectroscopy, 2022
In the present paper, I report on the spectroscopic study for tourmaline color origin, performed red samples from Minas Geras State, Brazil, by gemological routine testing, X-ray diffraction, Fourier transform infrared spectroscopy, ultraviolet-visible ...
Ming Li
doaj   +1 more source

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