Results 101 to 110 of about 101,524 (316)

Water Oxidation to Hydrogen Peroxide Over a Super‐Aerophilic Graphite Catalyst

open access: yesAdvanced Materials, EarlyView.
Design of super‐aerophilic graphite catalyst capable of trapping in situ produced oxygen gas on its surface under the electrolyte environment. By so doing, it is able to moderate intermediate species binding, which is critical to enabling the two‐electron water oxidation reaction to hydrogen peroxide.
Umer Javed   +16 more
wiley   +1 more source

Monitoring of fumarole discharge and CO2 soil degassing in the Azores: contribution to volcanic surveillance and public health risk assessment

open access: yesAnnals of Geophysics, 2005
Fluid geochemistry monitoring in the Azores involves the regular sampling and analysis of gas discharges from fumaroles and measurements of CO2 diffuse soil gas emissions.
C. Faria   +5 more
doaj   +1 more source

Abrupt changes of hydrothermal activity in a lava dome detected by combined seismic and muon monitoring [PDF]

open access: yesarXiv, 2018
The recent 2014 eruption of the Ontake volcano in Japan recalled that hydrothermal fields of moderately active volcanoes have an unpredictable and hazardous behavior that may endanger human beings. Steam blasts can expel devastating ejecta and create craters of several tens of meters.
arxiv  

Spin‐State Manipulation of Atomic Manganese Center by Phosphide‐Support Interactions for Enhanced Oxygen Reduction

open access: yesAdvanced Materials, EarlyView.
The electronic configuration of Mn single‐atom sites is regulated from low‐spin to high‐spin states by embedding well‐defined molybdenum phosphide nanocrystals nearby (MoP@MnSAC‐NC). The electronic phosphide‐support interaction between MoP and Mn single atoms drives the electronic structure transition in Mn sites from low‐spin to high‐spin states, and ...
Zuyang Luo   +9 more
wiley   +1 more source

Volcanic Thunder From Explosive Eruptions at Bogoslof Volcano, Alaska

open access: yesGeophysical Research Letters, 2018
Lightning often occurs during ash‐producing eruptive activity, and its detection is now being used in volcano monitoring for rapid alerts. We report on infrasonic and sonic recordings of the related, but previously undocumented, phenomenon of volcanic ...
Matthew M. Haney   +5 more
doaj   +1 more source

The Impact of DNA as a Chemical Admixture for Cementitious Materials

open access: yesAdvanced Materials Technologies, EarlyView.
DNA molecules are added to cement pastes and their effects on rheology and hydration time are studied. DNA's chemical structure is composed of polysaccharide and phosphate groups, which are active functional groups in different commercial chemical admixtures: Viscosity modifiers and superplasticizers.
Alexander Mezhov   +4 more
wiley   +1 more source

Using GES DISC Data to Study Kilauea Volcano of 2018 [PDF]

open access: yes
Kilauea volcano in Hawaii which erupted in early May 2018 injected massive amount of SO2 and ash into the atmosphere. The lava flow during the eruption destroyed many home and neighborhoods.
Johnson, James E.   +5 more
core   +1 more source

The use of infrasound in volcano monitoring : contribution for future application in the Azores Islands [PDF]

open access: yes, 2019
Dissertação de Mestrado, Vulcanologia e Riscos Geológicos, 22 de fevereiro de 2019, Universidade dos Açores.Infrassons resultam de perturbações na pressão atmosférica associadas quer a fontes naturais quer antropogénicas.
Matos, Sandro Branquinho
core  

Immune Checkpoint PD‐L1 Modulates Retinal Microglial Activation to Alleviate Vascular Leakage in Choroidal Neovascularization via ERK

open access: yesAdvanced Science, EarlyView.
PD‐L1 limits neuroinflammation in neovascular AMD by modulating microglial activation. Its deficiency exacerbates vascular leakage and choroidal neovascularization (CNV) via ERK signaling, while enhancing PD‐L1 reduces inflammation and neovascularization. Targeting PD‐L1 may offer a novel immunomodulatory strategy for NVAMD.
Yue Zou   +7 more
wiley   +1 more source

The Effects of Tropospheric Bias on Deformation Monitoring of MT. Guntur using GPS Survey Method

open access: yesJournal of Mathematical and Fundamental Sciences, 2019
Pemantauan deformasi gunung api yang andal menuntut ketelitian yang tinggi, yaitu sampai level keteliatian mm untuk kasus gunung api yang tengah 'bangkit' kembali. Konsekuensinya adalah kesalahan dan bias yang dapat mengurangi ketelitian dalam penentuan
Hasanuddin Z. Abidin   +9 more
doaj  

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