Results 81 to 90 of about 72,423 (321)

Characterizing analogue caldera collapse with computerized X-ray tomography [PDF]

, 2013
Analogue models of caldera collapse were imaged by computerized X-ray tomography (μCT). Interval μCT radiography sequences document ‘2.5D’ surface and internal model deformation in an unprecedented way, and carry the potential for a better understanding ...
Boone, Matthieu, Cnudde, Veerle, Kervyn de Meerendre, Matthieu, Pauwels, Elin, Poppe, Sam   +4 more
core   +1 more source

Satellite images monitor volcanos [PDF]

Eos, Transactions American Geophysical Union, 1989
In response to the rare but serious threat that volcanoes pose to airplanes, the Federal Aviation Administration and the National Oceanic and Atmospheric Administration recently established a volcano monitoring service. Under the agreement NOAA will contact FAA if satellite images show ash eruptions reaching higher than 5 km along flight routes.The ...
openaire   +1 more source

Enhanced Sonodynamic Bacterial Elimination and Wound Healing Therapy Based on Lanthanide Ion Doped Bi2WO6 Nanosheets and Hydrogel Platform

Advanced Functional Materials, EarlyView.
Lanthanide ytterbium ions are introduced into Bi2WO6 nanosheets to boost ROS generation under US stimulation. These ytterbium‐doped Bi2WO6 nanosheets serve as efficient sonosensitizers, enabling broad‐spectrum bacterial eradication. To improve biocompatibility for in vivo sonodynamic therapy, the sonosensitizers are integrated into hydrogel matrix ...
Xinyue Lao, Qianqian Bai, Yifei Zhao, Xingyi Dai, Yuan Liu, Xiao Han, Jianhua Hao   +6 more
wiley   +1 more source

Tailored Reconstruction of Polycrystalline CuO Nanorods Promotes C─C Coupling in CO2 Electroreduction

Advanced Functional Materials, EarlyView.
Controlling the polycrystallinity of CuO nanorods enables directional reconstruction into rod‐like structures that stabilize Cu(OH)2 and increase Cu+ ratios, while modulating interfacial water dynamics to enhance C─C coupling and boost C2+ product formation in CO2 electroreduction.
Hyeon‐Seok Bang, Young‐Jin Ko, Hyo Sang Jeon, Eugene Huh, Eung Dab Kim, Min Gwan Ha, Chulwan Lim, Jiho Jeon, Seohyeon Ka, Dogyeong Kim, Xiaojie Zhang, Yeongjin Kim, Kyeongsu Kim, Woong Hee Lee, Jae‐Young Choi, Hyung‐Suk Oh   +15 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

Annals 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, M. Marcos, F. Viveiros, J. L. Gaspar, T. Ferreira, F. Sousa   +5 more
doaj   +1 more source

Gas emission strength and evolution of the molar ratio of BrO/SO2 in the plume of Nyiragongo in comparison to Etna [PDF]

, 2015
Airborne and ground-based differential optical absorption spectroscopy observations have been carried out at the volcano Nyiragongo (Democratic Republic of Congo) to measure SO2 and bromine monoxide (BrO) in the plume in March 2004 and June 2007 ...
Aiuppa, Aiuppa, Aiuppa, Aiuppa, Aiuppa, Bobrowski, Bobrowski, Bobrowski, Bobrowski, Bobrowski, Boichu, Bureau, Carn, Chakrabarti, Delmelle, Dorf, Durieux, Ebinger, Fitzenberger, Galle, Galle, Gerlach, Gerlach, Gerlach, Giggenbach, Glasow, Glasow, Glasow, Glasow, Halmer, Honda, Horrocks, Hönninger, Kelly, Kern, Kitto, Komorowski, Kutterolf, Lary, Lazrus, Martin, Martin, Noguchi, Oppenheimer, Parrella, Pennisi, Pinto, Platt, Pundt, Pyle, Richter, Richter, Roberts, Robock, Rogers, Rogers, Saiz-Lopez, Salawitch, Sawyer, Schofield, Schofield, Sedlacek, Shinohara, Sturges, Surl, Symonds, Tazieff, Theys, Theys, Wennberg, Witt, Wittmer, Woods, Yang   +73 more
core   +1 more source

Functional Materials for Environmental Energy Harvesting in Smart Agriculture via Triboelectric Nanogenerators

Advanced Functional Materials, EarlyView.
This review explores functional and responsive materials for triboelectric nanogenerators (TENGs) in sustainable smart agriculture. It examines how particulate contamination and dirt affect charge transfer and efficiency. Environmental challenges and strategies to enhance durability and responsiveness are outlined, including active functional layers ...
Rafael R. A. Silva, Giulio Fatti, Emanuel Carlos, Guilherme Ferreira, Sumita Goswami, Suman Nandy, Luiz H. C. Mattoso, Elvira Fortunato, Caio G. Otoni, Rodrigo Martins   +9 more
wiley   +1 more source

A thermodynamical model for rainfall-triggered volcanic dome collapse [PDF]

, 2004
Dome-forming volcanic eruptions typically involve the slow extrusion of viscous lava onto a steep-sided volcano punctuated by collapse and the generation of hazardous pyroclastic flows.
Adrian J. Matthews, Barclay, Calder, Carn, Couch, Dzurisin, Jenni Barclay, Kesthelyi, Mastin, Matthews, Melnik, Oppenheimer, Sparks, Spera, Watts   +14 more
core   +1 more source

Using In Situ TEM to Understand the Surfaces of Electrocatalysts at Reaction Conditions: Single‐Atoms to Nanoparticles

Advanced Functional Materials, EarlyView.
This review summarizes recent advances in closed‐cell in situ TEM strategies for accurate determination of the activity and stability of single‐atom catalyst systems during operation. Operando conditions causing dynamic changes of SAC systems are highlighted and we explain why ensemble average‐based optical techniques may benefit from the technological
Martin Ek, Soshan Cheong, Julie Cairney, Richard D. Tilley, Ingemar Persson   +4 more
wiley   +1 more source

Exploiting ground-based optical sensing technologies for volcanic gas surveillance

Annals of Geophysics, 2004
Measurements of volcanic gas composition and flux are crucial to probing and understanding a range of magmatic, hydrothermal and atmospheric interactions.
A. J. S. McGonigle, C. Oppenheimer
doaj   +1 more source