Results 51 to 60 of about 2,598,475 (293)

Dielectric anisotropy as indicator of crystal orientation fabric in Dome Fuji ice core: method and initial results

Journal of Glaciology, 2022
Polycrystalline ice is known to exhibit macroscopic anisotropy in relative permittivity (ɛ) depending on the crystal orientation fabric (COF). Using a new system designed to measure the tensorial components of ɛ, we investigated the dielectric anisotropy
Tomotaka Saruya, Shuji Fujita, Ryo Inoue
doaj   +1 more source

Melting temperature changes during slip across subglacial cavities drive basal mass exchange

Journal of Glaciology, 2022
The importance of glacier sliding has motivated a rich literature describing the thermomechanical interactions between ice, liquid water and bed materials. Early recognition of the gradient in melting temperature across small bed obstacles led to focused
Alan W. Rempel, Colin R. Meyer, Kiya L. Riverman   +2 more
doaj   +1 more source

Neutron diffraction and NMR relaxation studies of structural variation and phase transformations for water/ice in SBA-15 silica: I. The over-filled case [PDF]

, 2006
Neutron diffraction and NMR relaxation measurements have been made of water/ice in SBA-15, a mesoporous silica constituting an ordered array of cylindrical mesopores of pore diameter similar to 86 angstrom, over the temperature range 180-300 K in a ...
Webber, J. Beau W., G H Findenegg, Khushalani, S., Findenegg, G.H., E Liu, T Hansen, Hansen, Thomas, J C Dore, Dore, J. C., Hansen, T., D Khushalani, Khushalani, D., Jähnert, S., J B W Webber, Findenegg, G. H., Webber, Beau, S Jähnert, Liu, E., Dore, John C.   +18 more
core   +1 more source

Physics-aware machine learning for glacier ice thickness estimation: a case study for Svalbard [PDF]

The Cryosphere
The ice thickness of the world's glaciers is mostly unmeasured, and physics-based models to reconstruct ice thickness cannot always deliver accurate estimates.
V. Steidl, J. L. Bamber, J. L. Bamber, X. X. Zhu, X. X. Zhu   +4 more
doaj   +1 more source

Seasonal evolution of granular and columnar sea ice pore microstructure and pore network connectivity

Journal of Glaciology, 2022
Sea-ice pore microstructure constrains ice transport properties, affecting fluid flow relevant to oil-in-ice transport and biogeochemical processes. Motivated by a lack of pore microstructural data, in particular for granular ice and across the seasonal ...
Marc Oggier, Hajo Eicken
doaj   +1 more source

Finding novel vulnerabilities of hypomorphic BRCA1 alleles

Molecular Oncology, EarlyView.
Synthetic lethality screens performed to identify novel vulnerabilities often model complete gene loss, thereby overlooking patient‐derived hypomorphic mutations. In this study, we have performed genome‐wide CRISPR screens on BRCA1 hypomorphic mutations, showing BRCA1I26A behaves like wild‐type, while BRCA1R1699Q mimics deficiency. Furthermore, we have
Anne Schreuder, Klaas de Lint, Hồ Mỹ Phúc Võ, Mariana M. Góis, Rosalie A. Kampen, Marta San Martin Alonso, Ilse Nootenboom, Veronica Garzero, Tiemen J. Wendel, Rob M. F. Wolthuis, Sylvie M. Noordermeer   +10 more
wiley   +1 more source

Multiscale physics of rubber-ice friction

, 2016
Ice friction plays an important role in many engineering applications, e.g., tires on icy roads, ice breaker ship motion, or winter sports equipment. Although numerous experiments have already been performed to understand the effect of various conditions
Bo Persson, Ari J. Tuononen, Persson, Bo, Kriston, András, Tuononen, Ari J., András Kriston   +5 more
core   +1 more source

Mitigating stellar radial velocity jitter using orthogonal activity indices and a time-aware neural network

Astronomy & Astrophysics
Context. Despite recent advances in the precision of high-resolution spectrographs, the detection of Earth-like exoplanets is still limited by the effects of stellar activity, which introduce radial velocity variations at the metre-per-second level or ...
Blanco-Pozo Jordi, Perger Manuel, Anglada-Escudé Guillem, Ribas Ignasi, Baroch David, Lafarga Marina, Morales Juan Carlos, Porqueras-León Òscar, Stucki Sophie, Vallmanya Poch David   +9 more
doaj   +1 more source

A novel quinazolinone insulin receptor inhibitor and its synergy with an EGFR inhibitor in glucose‐driven glioblastoma

Molecular Oncology, EarlyView.
The novel styrylquinazolinone‐based molecule W1B effectively suppresses glioblastoma by inhibiting IGF1R and EGFR. In high‐glucose microenvironments driving tumor resistance, W1B acts synergistically with the EGFR inhibitor dacomitinib. This combination safely blocks compensatory survival signaling in zebrafish xenograft models. Showcasing promising in
Patryk Rurka, Wioleta Cieślik, Wojciech Płaziński, Katarzyna Stępnik, Anna Boguszewska‐Czubara, Elżbieta Kot, Robert Musioł, Mateusz Jasica, Anna Mrozek‐Wilczkiewicz, Katarzyna Malarz   +9 more
wiley   +1 more source

An ice-sheet scale comparison of eskers with modelled subglacial drainage routes [PDF]

, 2015
Eskers record the signature of channelised meltwater drainage during deglaciation providing vital information on the nature and evolution of subglacial drainage.
Stokes, C.R., C.D. Clark (630927), Storrar, RD, Clark, CD, Tarasov, L, Stokes, Chris R., Hillier, J.K., Clark, C.D., Livingstone, SJ, Clark, Chris D., C.R. Stokes (630946), Tarasov, L., Livingstone, S.J., Stephen J. Livingstone (3691018), Tarasov, Lev, Livingstone, Stephen J., John Hillier (1254873), Storrar, Robert D., R. Storrar (630947), Hillier, JK, Hillier, John K., L. Tarasov (7191965), Storrar, R.D., Stokes, CR   +23 more
core   +1 more source