Results 41 to 50 of about 1,679,257 (316)

Fragmentation Instability of Molecular Clouds: Numerical Simulations

open access: yes, 2000
We simulate fragmentation and gravitational collapse of cold, magnetized molecular clouds. We explore the nonlinear development of an instability mediated by ambipolar diffusion, in which the collapse rate is intermediate to fast gravitational collapse ...
Baureis P.   +10 more
core   +1 more source

Is spontaneous wave function collapse testable at all? [PDF]

open access: yes, 2015
Mainstream literature on spontaneous wave function collapse never reflects on or profit from the formal coincidence and conceptual relationship with standard collapse under time-continuous quantum measurement (monitoring).
Diósi, Lajos
core   +2 more sources

In the Climate Emergency, Conservation Must Become Survival Ecology

open access: yesFrontiers in Conservation Science, 2021
Earth faces a climate emergency which renders conservation goals largely obsolete. Current conservation actions are inadequate because they (i) underplay biodiversity's role in maintaining human civilisation, which contributes to its marginalisation, and
Charlie J. Gardner, James M. Bullock
doaj   +1 more source

Survival-Time Distribution for Inelastic Collapse

open access: yes, 1998
In a recent publication [PRL {\bf 81}, 1142 (1998)] it was argued that a randomly forced particle which collides inelastically with a boundary can undergo inelastic collapse and come to rest in a finite time.
A. Puglisi   +24 more
core   +1 more source

The role of histone modifications in transcription regulation upon DNA damage

open access: yesFEBS Letters, EarlyView.
This review discusses the critical role of histone modifications in regulating gene expression during the DNA damage response (DDR). By modulating chromatin structure and recruiting repair factors, these post‐translational modifications fine‐tune transcriptional programmes to maintain genomic stability.
Angelina Job Kolady, Siyao Wang
wiley   +1 more source

La argumentación jurídica en la toma de decisión judicial

open access: yesRevista Vasca de Administración Pública, 2014
The judicial decision making is not only a mental activity but it has an argumentative part that if it is taken into account can improve the decision. A theory about the legal reasoning that deals with the context of discovery allows to establish in a ...
Francisco Javier Ezquiaga Ganuzas
doaj   +1 more source

Scalar Collapse in AdS [PDF]

open access: yes, 2012
Recently, studies of the gravitational collapse of a scalar field within spherically symmetric AdS spacetimes was presented in \cite{Bizon:2011gg,Jalmuzna:2011qw} which showed an instability of pure AdS to black hole formation.
Buchel, Alex   +2 more
core   +1 more source

Postpartum collapse

open access: yesObstetric Medicine, 2019
Abrupt deterioration in the mother’s condition may occur postpartum as a result of a broad array of conditions, many of them rare. Maternal survival depends on aggressive resuscitation, rapid precise diagnosis and the institution of disease-targeted therapy. Additionally there may be implications for any future pregnancy.
openaire   +4 more sources

Collapsing bacterial cylinders [PDF]

open access: yesPhysical Review E, 2001
Under special conditions bacteria excrete an attractant and aggregate. The high density regions initially collapse into cylindrical structures, which subsequently destabilize and break up into spherical aggregates. This paper presents a theoretical description of the process, from the structure of the collapsing cylinder to the spacing of the final ...
Betterton, M. D., Brenner, Michael P.
openaire   +3 more sources

The newfound relationship between extrachromosomal DNAs and excised signal circles

open access: yesFEBS Letters, EarlyView.
Extrachromosomal DNAs (ecDNAs) contribute to the progression of many human cancers. In addition, circular DNA by‐products of V(D)J recombination, excised signal circles (ESCs), have roles in cancer progression but have largely been overlooked. In this Review, we explore the roles of ecDNAs and ESCs in cancer development, and highlight why these ...
Dylan Casey, Zeqian Gao, Joan Boyes
wiley   +1 more source

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