Results 41 to 50 of about 468,934 (298)

On the Feeding Zone of Planetesimal Formation by the Streaming Instability

, 2014
The streaming instability is a promising mechanism to overcome the barriers in direct dust growth and lead to the formation of planetesimals. Most previous studies of the streaming instability, however, were focused on a local region of a protoplanetary ...
Johansen, Anders, Yang, Chao-Chin
core   +1 more source

Non-linear fate of internal wave attractors [PDF]

, 2013
We present a laboratory study on the instability of internal wave attractors in a trapezoidal fluid domain filled with uniformly stratified fluid. Energy is injected into the system via standing-wave-type motion of a vertical wall.
Dauxois, Thierry, Ermanyuk, E. V., Scolan, Hélène   +2 more
core   +3 more sources

The coexistence of the streaming instability and the vertical shear instability in protoplanetary disks [PDF]

Astronomy & Astrophysics, 2020
The streaming instability is a leading candidate mechanism to explain the formation of planetesimals. However, the role of this instability in the driving of turbulence in protoplanetary disks, given its fundamental nature as a linear hydrodynamical instability, has so far not been investigated in detail.
Urs Schäfer, Anders Johansen, Robi Banerjee   +2 more
openaire   +2 more sources

Network divergence analysis identifies adaptive gene modules and two orthogonal vulnerability axes in pancreatic cancer

Molecular Oncology, EarlyView.
Tumors contain diverse cellular states whose behavior is shaped by context‐dependent gene coordination. By comparing gene–gene relationships across biological contexts, we identify adaptive transcriptional modules that reorganize into distinct vulnerability axes.
Brian Nelson, Lyanne Delgado‐Coka, Natalia Marchenko, Luisa F. Escobar‐Hoyos, Kenneth R. Shroyer, Alisa Yurovsky, Trey Ideker, Gábor Balázsi, Thomas MacCarthy, Scott Powers   +9 more
wiley   +1 more source

Vertical instability prediction and its direction control using a support vector machine in integrated commissioning of JT-60SA solely based on magnetics

Nuclear Fusion
We developed a redundant logic for predicting Vertical Displacement Events (VDEs) using only magnetic diagnostics with a Support Vector Machine (Inoue et al 2022 Nucl. Fusion 62 086007).
S. Inoue, S. Kojima, Y. Miyata, T. Wakatsuki, T. Yokoyama, M. Takechi, H. Urano, M. Yoshida, T. Suzuki, the JT-60SA Integrated Project Team   +9 more
doaj   +1 more source

Does Environmental Instability Favor the Production and Horizontal Transmission of Knowledge regarding Medicinal Plants? A Study in Southeast Brazil.

PLoS ONE, 2015
Greater socio-environmental instability favors the individual production of knowledge because innovations are adapted to new circumstances. Furthermore, instability stimulates the horizontal transmission of knowledge because this mechanism disseminates ...
Gustavo Taboada Soldati, Natália Hanazaki, Marta Crivos, Ulysses Paulino Albuquerque   +3 more
doaj   +1 more source

Stratified and Vertically Shearing Streaming Instabilities in Protoplanetary Disks [PDF]

The Astrophysical Journal, 2021
Abstract Under the right conditions, the streaming instability between imperfectly coupled dust and gas is a powerful mechanism for planetesimal formation as it can concentrate dust grains to the point of gravitational collapse. In its simplest form, the streaming instability can be captured by analyzing the linear stability of ...
openaire   +2 more sources

Somatic mutational landscape in von Hippel–Lindau familial hemangioblastoma

Molecular Oncology, EarlyView.
The causes of central nervous system (CNS) hemangioblastoma in Von Hippel–Lindau (vHL) disease are unclear. We used Whole Exome Sequencing (WES) on familial hemangioblastoma to investigate events that underlie tumor development. Our findings suggest that VHL loss creates a permissive environment for tumor formation, while additional alterations ...
Maja Dembic, Anne Nørremølle, Lilian Bomme Ousager, Lars van Brakel Andersen, Marie Louise Mølgaard Binderup, Mads Thomassen   +5 more
wiley   +1 more source

Breathing Life Into Dead-Zones

EPJ Web of Conferences, 2013
The terrestrial planet formation regions of protoplanetary disks are generally sufficiently cold to be con- sidered non-magnetized and, consequently, dynamically inactive.
Gressel Oliver, Nelson Richard P., Umurhan Orkan M.   +2 more
doaj   +1 more source

Direct Numerical Simulation of 3D Salt Fingers: From Secondary Instability to Chaotic Convection [PDF]

, 2009
The amplification and equilibration of three-dimensional salt fingers in unbounded uniform vertical gradients of temperature and salinity is modeled with a Direct Numerical Simulation in a triply periodic computational domain.
Radko, Timour, Simeonov, Julian A., Stern, Melvin E.   +2 more
core   +1 more source