Results 51 to 60 of about 608,712 (186)
Clustering reveals cavitation-related acoustic emission signals from dehydrating branches [PDF]
Tree Physiology, 2016 The formation of air emboli in the xylem during drought is one of the key processes leading to plant mortality due to loss in hydraulic conductivity, and strongly fuels the interest in quantifying vulnerability to cavitation. The acoustic emission (AE) technique can be used to measure hydraulic conductivity losses and construct vulnerability curves ...
Vergeynst, Lidewei L. +4 more
openaire +3 more sources
Spectroscopy of Infrared Flares from the Microquasar GRS 1915+105 [PDF]
, 1998 We present near-infrared medium-resolution ($R \sim 875$) spectra of the microquasar GRS 1915+105 on 1997 August 13-15 UTC from the Hale 200-inch telescope. The spectra showed broad emission lines of He I (2.058 $\mu$m) and H I (2.166 $\mu$m - Br$\gamma$)
Bandyopadhyay R. +11 more
core +2 more sources
Advances in Condensed Matter Physics, 2014 In addition to the standard 447 nm blue emission from the InGaN/GaN multiple quantum wells, a high-energy shoulder is clearly observed in cathodoluminescence spectra of the high-efficiency InGaN/GaN blue light emitting diodes grown on sapphire substrates
Manh-Ha Doan, Jaejin Lee
doaj +1 more source
Spin-current emission governed by nonlinear spin dynamics
, 2015 Coupling between conduction electrons and localized magnetization is responsible for a variety of phenomena in spintronic devices. This coupling enables to generate spin currents from dynamical magnetization.
Ando, Kazuya +6 more
core +1 more source
Airborne observations reveal elevational gradient in tropical forest isoprene emissions [PDF]
Nature Communications, 2017 AbstractIsoprene dominates global non-methane volatile organic compound emissions, and impacts tropospheric chemistry by influencing oxidants and aerosols. Isoprene emission rates vary over several orders of magnitude for different plants, and characterizing this immense biological chemodiversity is a challenge for estimating isoprene emission from ...
Dasa Gu +21 more
openaire +5 more sources
Probing the Pulsar Wind Nebula of PSR B0355+54 [PDF]
, 2006 We present XMM-Newton and Chandra X-ray observations of the middle-aged radio pulsar PSR B0355+54. Our X-ray observations reveal emission not only from the pulsar itself, but also from a compact diffuse component extending ~50'' in the opposite direction
Becker W. +9 more
core +2 more sources
Gallstone Magnesium Distributions from Optical Emission Spectroscopy
Atoms, 2018 This work reports measurements of calcified gallstone elemental compositions using laser-induced optical emission spectroscopy. The experimental results support the importance of the magnesium concentration in gallstone growth.
Ashok K. Pathak +5 more
doaj +1 more source
Nature Communications, 2022 Soil nitrogen isotopic composition is used to drive the IsoTONE model, which is constrained with measurements of tropospheric nitrous oxide isotopic composition. The model results reveal causes of rising mean global nitrous oxide emission factor.
E. Harris +18 more
doaj +1 more source
Women on Boards as A Mechanism to Improve Carbon Emission Disclosure and Firm Value
Jurnal Ilmiah Akuntansi dan Bisnis, 2021 This study investigates the role of women on boards as a mechanism to improve carbon emission disclosure, as a mediating effect influence on firm value.
Monica Monica +2 more
doaj +1 more source
Ultrasonic emissions reveal individual cavitation bubbles in water-stressed wood [PDF]
Journal of The Royal Society Interface, 2014 Under drought conditions, the xylem of trees that conducts ascending sap produces ultrasonic emissions whose exact origin is not clear. We introduce a new method to record simultaneously both acoustic events and optical observation of the xylem conduits within slices of wood that were embedded in a transparent material setting a hydric stress.
Ponomarenko, Alexandre +5 more
openaire +3 more sources