Results 51 to 60 of about 264,390 (347)

The unusual volatile composition of the Halley-type comet 8P/Tuttle: Addressing the existence of an Inner Oort Cloud

, 2008
We measured organic volatiles (CH4, CH3OH, C2H6, H2CO), CO, and water in comet 8P/Tuttle, a comet from the Oort cloud reservoir now in a short-period Halley-type orbit.
B. P. Bonev, Bailey, Bockelée-Morvan, Bonev, Bonev, Crovisier, DiSanti, DiSanti, Drahus, Duncan, Edwards, G. L. Villanueva, H. Böhnhardt, H. U. Käufl, Harmon, Kobayashi, Levison, Levison, M. A. DiSanti, M. J. Mumma, M. Lippi, Morbidelli, Mumma, Schleicher, Schleicher, Villanueva, Vsekhsviatskii   +26 more
core   +1 more source

Laser‐Induced Graphene from Waste Almond Shells

Advanced Functional Materials, EarlyView.
Almond shells, an abundant agricultural by‐product, are repurposed to create a fully bioderived almond shell/chitosan composite (ASC) degradable in soil. ASC is converted into laser‐induced graphene (LIG) by laser scribing and proposed as a substrate for transient electronics.
Yulia Steksova, Anna Chiara Bressi, Marina Galliani, Attilio Marino, Gianni Ciofani, Eduardo Machado‐Charry, Hilda Gomez Bernal, Alessandra Francini, Luca Sebastiani, Francesco Greco   +9 more
wiley   +1 more source

Variability in interseismic strain accumulation rate and style along the Altyn Tagh Fault

Nature Communications
Major strike-slip faults that develop between strong and weaker regions are thought to focus along narrow shear zones at the rheological boundary. Here we present the InSAR-derived velocity field spanning almost the entire length of one such fault, the ...
Lin Shen, Andrew Hooper, John R. Elliott, Tim J. Wright   +3 more
doaj   +1 more source

Pre-discovery Activity of New Interstellar Comet 2I/Borisov beyond 5 au [PDF]

Astronomical Journal, 2019
Comet 2I/Borisov, the first unambiguous interstellar comet ever found, was discovered in 2019 August at ∼3 au from the Sun on its inbound leg. No pre-discovery detection beyond 3 au has yet been reported, mostly due to the comet’s proximity to the Sun as
Q. Ye 叶, M. Kelley, B. Bolin, D. Bodewits, D. Farnocchia, F. Masci, K. Meech, Marco Micheli, R. Weryk, E. Bellm, E. Christensen, R. Dekany, A. Delacroix, M. Graham, S. Kulkarni, R. Laher, B. Rusholme, Roger M. Smith   +17 more
semanticscholar   +1 more source

Dual‐Peptide Nanoplatform: Mesoporous Silica Nanoparticles Functionalized With a Cell‐Penetrating Peptide and Loaded With Rationally Designed Antimicrobial Peptides for Tuberculosis Therapy

Advanced Healthcare Materials, EarlyView.
Machine learning–guided engineering of a plectasin‐derived peptide yields DC05, a potent antimycobacterial candidate. Encapsulation into tuftsin‐functionalized mesoporous silica nanoparticles enhances intracellular delivery, stability, and activity against Mycobacterium tuberculosis while maintaining low cytotoxicity and minimal hemolysis. The combined
Christian S. Carnero Canales, Cesar Augusto Roque‐Borda, Ana Carolina Cerqueira Negri, Oswaldo Ramirez Delgado, Letícia Oliveira Catarin Nunes, Flávia Aparecida Resende, Hernane Barud, Norival Alves Santos‐Filho, Saulo Santesso Garrido, Karen Cristina Oliveira, Alexandra Ivo de Medeiros, Rafael Miguel Sábio, Fernando Rogério Pavan   +12 more
wiley   +1 more source

An InSAR‐GNSS Velocity Field for Iran

Geophysical Research Letters
We present average ground‐surface velocities and strain rates for the 1.7 million km2 area of Iran, from the joint inversion of InSAR‐derived displacements and GNSS data.
Andrew R. Watson, John R. Elliott, Milan Lazecký, Yasser Maghsoudi, Jack D. McGrath, Richard J. Walters   +5 more
doaj   +1 more source

Spiro‐Phenothiazine Hole‐Transporting Materials: Unlocking Stability and Scalability in Perovskite Solar Cells

Advanced Materials, EarlyView.
Fluorene‐functionalized spiro‐phenothiazine (PTZ‐Fl) exhibits strong Li+ affinity and thermal stability, enabling a PCE of 25.75% in small‐area cells and 22.07% in 25 cm2 modules. Under ISOS‐L3 conditions, PTZ‐Flbased devices retain over 80% efficiency after 1000 hours, demonstrating superior stability and scalability compared to spiro‐OMeTAD for next ...
Javier Urieta‐Mora, Seung Ju Choi, Jaeki Jeong, Silvia Orecchio, Inés García‐Benito, Manuel Pérez‐Escribano, Joaquín Calbo, Likai Zheng, Minseop Byun, Seyeong Song, Gi‐Hwan Kim, Shaik M. Zakeeruddin, Seog‐Young Yoon, Yimhyun Jo, Agustín Molina‐Ontoria, Enrique Ortí, Nazario Martín, Michael Grätzel   +17 more
wiley   +1 more source

High‐resolution digital elevation model from tri‐stereo Pleiades‐1 satellite imagery for lava flow volume estimates at Fogo Volcano

Geophysical Research Letters, 2016
Resolving changes in topography through time using accurate high‐resolution digital elevation models (DEMs) is key to understanding active volcanic processes.
Marco Bagnardi, Pablo J. González, Andrew Hooper   +2 more
doaj   +1 more source

Magmatic Processes in the East African Rift System: Insights From a 2015–2020 Sentinel‐1 InSAR Survey

Geochemistry, Geophysics, Geosystems, 2021
The East African Rift System (EARS) is composed of around 78 Holocene volcanoes, but relatively little is known about their past and present activity.
F. Albino, J. Biggs
doaj   +1 more source

Lately Exposed Amorphous Water Ice on Comet 49P/Arend-Rigaux

, 2014
Comet 49P/ Arend-Rigaux, thought to be a low activity comet since the 1980's was found to be active in its recent apparitions. Recent analysis of the data obtained from Spitzer observation of the comet in 2006 compared with laboratory spectra has ...
Arora, S., Ganesh, S., Kalyaan, A., Sivaraman, B., Venkataraman, V.   +4 more
core   +1 more source