Results 11 to 20 of about 2,521,623 (328)

Spontaneous decompactification [PDF]

open access: yesPhysical Review D, 2004
Positive vacuum energy together with extra dimensions of space imply that our four-dimensional Universe is unstable, generically to decompactification of the extra dimensions. Either quantum tunneling or thermal fluctuations carry one past a barrier into the decompactifying regime.
Steven B. Giddings, Robert C. Myers
openaire   +3 more sources

Spontaneous scalarization [PDF]

open access: yesPhysical Review D, 1998
We study in the physical frame the phenomenon of spontaneous scalarization that occurs in scalar-tensor theories of gravity for compact objects. We discuss the fact that the phenomenon occurs exactly in the regime where the Newtonian analysis indicates it should not.
Ulises Nucamendi   +2 more
openaire   +3 more sources

Spontaneous Deracemizations

open access: yesChemical Reviews, 2021
Spontaneous deracemizations is a challenging, multidisciplinary subject in current chirality research. In the absence of any chiral inductors, an achiral substance or a racemic composition is driven into an enantioenriched or even homochiral state through a selective energy input, e.g., chemical potential, photoirradiation, mechanical grinding ...
Thomas Buhse   +6 more
openaire   +6 more sources

Mechanisms of Spontaneous Current Generation in an Inhomogeneous d-Wave Superconductor [PDF]

open access: yes, 1994
A boundary between two d-wave superconductors or an s-wave and a d-wave superconductor generally breaks time-reversal symmetry and can generate spontaneous currents due to proximity effect.
Anderson E.   +9 more
core   +3 more sources

Spontaneous acroangiodermatitis

open access: yesIndian Journal of Dermatology, 2015
Acroangiodermatitis is a rare self-limited angioproliferative lesion which can be associated with congenital vascular malformations or acquired venous insufficiency. Despite of its benign character, differential diagnosis of this lesion is very important because it closely resembles Kaposi sarcoma.
Alper, Murat   +2 more
openaire   +5 more sources

Spontaneous pneumothorax [PDF]

open access: yesMultidisciplinary Respiratory Medicine, 2011
Pneumothorax is defined as the presence of air in the pleural space due to: a) communication be- tween alveolar spaces and pleura; b) direct or indi- rect exchange of air between the atmosphere and the pleural space; or c) the presence of gas produc- ing organisms in the pleural space.
openaire   +5 more sources

Spontaneous thought and vulnerability to mood disorders : the dark side of the wandering mind [PDF]

open access: yes, 2016
There is increasing interest in spontaneous thought, namely task-unrelated or rest-related mental activity. Spontaneous thought is an umbrella term for processes like mind-wandering, involuntary autobiographical memory, and daydreaming, with evidence ...
Alloy, Lauren B.   +3 more
core   +2 more sources

A DIC based technique to measure the contraction of a skeletal muscle engineered tissue [PDF]

open access: yes, 2016
Tissue engineering is a multidisciplinary science based on the application of engineering approaches to biologic tissue formation. Engineered tissue internal organization represents a key aspect to increase biofunctionality before transplant and, as ...
Carosio, Silvia   +5 more
core   +2 more sources

Spontaneous CP Violation [PDF]

open access: yes, 1998
In this talk I begin with some general discussion of the history of CP violation, then move on to aspects of the aspon model including the production of new particles at LHC, implications for B decay, generalized Cabibbo mixing and a reevaluation of kaon
Frampton, Paul H.
core   +3 more sources

Spontaneous bilateral tubal pregnancy - case report and review of diagnostic and treatment difficulties [PDF]

open access: yesSrpski Arhiv za Celokupno Lekarstvo, 2023
Introduction. Spontaneous bilateral ectopic pregnancy is a rare condition easily overlooked or misdiagnosed. We present a case of spontaneous bilateral tubal ectopic pregnancy and discuss the difficulties in diagnosing and treating such patients.
Bila Jovan   +4 more
doaj   +1 more source

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