Results 11 to 20 of about 3,165,406 (373)

Geodesic Instability [PDF]

open access: bronzeProceedings of the American Mathematical Society, 1956
L. W. Green
openalex   +2 more sources

Instabilities in the aether [PDF]

open access: yesPhysical Review D, 2009
23 pages, 1 figure; in v2: added references and made minor minor changes to text in sections I and VI; in v3 (version accepted by PRD): added references and made minor changes to discussion in section ...
Carroll, Sean M.   +3 more
openaire   +5 more sources

Investment and Instability [PDF]

open access: yesSSRN Electronic Journal, 1998
Although recent research has repeatedly found a negative association between investment and socio-political instability (SPI), the existence and direction of causality between these two variables has not yet been investigated. We construct an index of SPI for non-overlapping five-year periods between 1960 and 1995 for a sample of 98 developing ...
Nauro F. Campos   +3 more
openaire   +5 more sources

Pembrolizumab in Microsatellite-Instability-High Advanced Colorectal Cancer.

open access: yesNew England Journal of Medicine, 2020
BACKGROUND Programmed death 1 (PD-1) blockade has clinical benefit in microsatellite-instability-high (MSI-H) or mismatch-repair-deficient (dMMR) tumors after previous therapy.
T. André   +20 more
semanticscholar   +1 more source

Evidence for general instability of past climate from a 250-kyr ice-core record

open access: yesNature, 1993
RECENT results1,2 from two ice cores drilled in central Greenland have revealed large, abrupt climate changes of at least regional extent during the late stages of the last glaciation, suggesting that climate in the North Atlantic region is able to ...
W. Dansgaard   +11 more
semanticscholar   +1 more source

Experimental study on the effect of granular backfill with various gradations on the mechanical behavior of rock

open access: yesInternational Journal of Mining Science and Technology, 2021
Backfilling is a common practice in the mining industry and the backfilling performance plays a significant role in supporting the surrounding rock mass.
Zhihua Le   +4 more
doaj   +1 more source

Time-dependent deformation and fracture evolution around underground excavations

open access: yesGeomatics, Natural Hazards & Risk, 2020
A numerical time-dependent deformation model of rock by incorporating the stress corrosion model into a three-dimensional discrete element code was established to investigate time-dependent deformation and fracture evolution of surrounding rock around ...
Teng-Fei Fu   +5 more
doaj   +1 more source

Observation of modulation instability in a nonlinear magnetoinductive waveguide [PDF]

open access: yes, 2013
We report numerical and experimental investigations into modulation instability in a nonlinear magnetoinductive waveguide. By numerical simulation we find that modulation instability occurs in an electrical circuit model of a magnetoinductive waveguide ...
Kitano, Masao   +2 more
core   +2 more sources

Torus Instability

open access: yesPhysical Review Letters, 2006
minor update to conform to printed ...
Kliem, B, Torok, T
openaire   +4 more sources

Review of unstable falling of roof rock blocks under dynamic disturbance

open access: yes工程科学学报, 2023
Roof caving has been the main threat to the safety of underground mining, in which the caving of roof rock blocks is particularly concerning. The secondary structural planes of surrounding rocks around underground excavations, such as roadways and stopes,
Wancheng ZHU   +5 more
doaj   +1 more source

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