Results 31 to 40 of about 34,974 (242)

Dating stalagmite from Caverna do Diabo (Devil´S Cave) by TL and EPR techniques

Anais da Academia Brasileira de Ciências
A cylindrical fragment of stalagmite from Caverna do Diabo, State of São Paulo, Brazil, has been studied and dated by thermoluminescence and electron paramagnetic resonance techniques.
SHIGUEO WATANABE, NILO F. CANO, T.K. GUNDU RAO, BETZABEL N. SILVA-CARRERA, LUCAS S. CARMO, ANTONIO J.A. QUINA, ROSELI F. GENNARI, CASIMIRO S. MUNITA, JORGE S. AYALA-ARENAS, BRUNO G. FERNANDES   +9 more
doaj   +1 more source

Continuous-wave electron paramagnetic resonance (CW-EPR) for studying structure-function relationships in a Cu-containing nitrite reductase and a Mo-containing aldehyde oxidoreductase

Journal of Magnetic Resonance Open, 2023
Transition metal ion-containing oxidoreductases, which carry out long-distance electron transfer reactions, are a large family of metalloproteins that are widely distributed in nature.
Pablo J. González, María G. Rivas, Ana L. Pérez, Carlos D. Brondino   +3 more
doaj   +1 more source

Water Permeates and Plasticizes Amorphous Carbon Dots: Unraveling the Inner Accessibility of the Nanoparticles by Glass Transition Studies

Advanced Materials, EarlyView.
The water permeability of amorphous carbon dots (CDs) is demonstrated by investigating their plasticization. Novel polyamide‐based and amorphous nanoparticles are synthesized by controlling their inner packing density. Water plasticization is evidenced by the decrease of the CDs glass transition temperature with increasing the hydration degree.
Elisa Sturabotti, Valerio Di Lisio, Lucia Cardo, Alessandro Camilli, Estela Moretón Alfonsín, Daniele Cangialosi, Amaia Iturrospe Ibarra, Arantxa Arbe, Maurizio Prato   +8 more
wiley   +1 more source

Self‐Cooling Molecular Spin Qudits

Advanced Materials, EarlyView.
A material made of [GdEr] molecular dimers can encode a qudit and perform as a magnetic refrigerant. Microwave resonant pulses coherently manipulate its 16 spin states, while direct demagnetization measurements cool the material and a device down to temperatures below 1 K.
Elías Palacios, David Aguilà, David Gracia, Diamatoula Maniaki, Leoní A. Barrios, Alessandro Chiesa, Jesús I. Martínez, Valentin Novikov, Olivier Roubeau, Stefano Carretta, Marco Evangelisti, Guillem Aromí, Fernando Luis   +12 more
wiley   +1 more source

Hyperfine interactions of paramagnetic radiation-induced defect centres in advanced ceramic breeder pebbles

Nuclear Materials and Energy
Advanced ceramic breeder (ACB) pebbles consisting of 65 mol% lithium orthosilicate (Li4SiO4) and 35 mol% lithium metatitanate (Li2TiO3) are developed for tritium breeding in the European Union’s (EU) helium cooled pebble bed (HCPB) breeder blanket ...
Andris Antuzevics, Arturs Zarins, Jekabs Cirulis, Andris Fedotovs, Anna Ansone, Magdalena Rzepna, Julia M. Leys, Regina Knitter   +7 more
doaj   +1 more source

Application of Spectroscopic Methods for Analysis of Ni-Based Alloys (Ni% ≥70)

Cumhuriyet Science Journal, 2018
In this paper, we investigate the structural and magnetic properties ofNi based alloys which are in the form of NixFeyMoz(x = 0.80; y = 0.15; z = 0.05), NixCryFez (x =0.70; y = 0.20; z = 0.10), and NixCryAlzCut (x = 0.75; y = 0.20; z =0.025; t = 0.025 ...
Zeynep Aygün
doaj   +1 more source

In situ electron paramagnetic resonance spectroscopy using single nanodiamond sensors

Nature Communications, 2023
An ultimate goal of electron paramagnetic resonance (EPR) spectroscopy is to analyze molecular dynamics in place where it occurs, such as in a living cell.
Zhuoyang Qin, Zhecheng Wang, Fei Kong, Jia Su, Zhehua Huang, Pengju Zhao, Sanyou Chen, Qi Zhang, Fazhan Shi, Jiangfeng Du   +9 more
doaj   +1 more source

Unravelling the Secret of Sulfur Confinement and High Sulfur Utilization in Hybrid Sulfur‐Carbons

Advanced Materials, EarlyView.
Thermal condensation of inverse vulcanized sulfur‐carbon hybrids enables a bottom‐up sulfur confinement strategy, in which a protective carbon phase is progressively constructed around sulfur species. The resulting carbon nanodomains covalently tether sulfur chains and stabilize radical intermediates. This integrated architecture effectively suppresses
Tim Horner, Enis Oğuzhan Eren, Elif Begüm Yılmaz, Jiyong Kim, Ernesto Scoppola, Alexandros Vasileiadis, Nadezda V. Tarakina, Markus Antonietti, Paolo Giusto, Evgeny Senokos   +9 more
wiley   +1 more source

Research on electron paramagnetic resonance of modified phosphate fertilizers

浙江大学学报. 农业与生命科学版, 2004
In the productive process of save sulphuric acid phosphate fertilizer, different proportional additives were added to ground phosphate rock to produce three new modified phosphate fertilizers.
WU Ping-xiao, LIAO Zong-wen
doaj   +1 more source

2D MOF with Intrinsic Porosity for Colorimetric Volatile Organic Compounds (VOCs) Detection

Advanced Materials, EarlyView.
An uncommon 2D MOF with intrinsic in‐plane porosity that can be mechanically exfoliated undergoes a distinct and reversible colour change upon exposure to various volatile organic compounds. ABSTRACT In this work, we report an uncommon 2D metal–organic framework (MOF) with intrinsic in‐plane porosity that undergoes a distinct and reversible colour ...
Sergio R. Gamarra, Alberto Fernández‐Alarcón, Joaquín Calbo, Enrique Ortí, Guillermo Mínguez Espallargas   +4 more
wiley   +1 more source