Results 61 to 70 of about 5,709,499 (335)

Circular and Elliptic Restricted Three Body Problems -A Comparison

open access: yes, 2021
The elliptic restricted three body problem has been well studied. However, the previous formulations of the problem have used a rotating coordinate system to keep the positions of the primary and secondary on the x-axis. This requires the rotation rate of the rotating coordinate system to speed up and slow down.
openaire   +2 more sources

DELP Treatment on Vision and Retinal Microcirculation in Patients With Acute Ischemic Stroke: Report of Five Cases and Literature Review

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background The delipid extracorporeal lipoprotein filter from plasma (DELP) treatment can effectively reduce blood lipid, increase blood flow, and improve neurological deficits in patients with acute ischemic stroke (AIS). However, its effect on vision and retinal microcirculation in stroke patients has never been reported.
Ning Li   +9 more
wiley   +1 more source

By dawn or dusk—how circadian timing rewrites bacterial infection outcomes

open access: yesFEBS Letters, EarlyView.
The circadian clock shapes immune function, yet its influence on infection outcomes is only beginning to be understood. This review highlights how circadian timing alters host responses to the bacterial pathogens Salmonella enterica, Listeria monocytogenes, and Streptococcus pneumoniae revealing that the effectiveness of immune defense depends not only
Devons Mo   +2 more
wiley   +1 more source

Pseudo-Newtonian planar circular restricted 3-body problem [PDF]

open access: yesPhysics Letters A, 2017
11 pages, 2 figures.
F.L. Dubeibe   +2 more
openaire   +3 more sources

Hematopoietic (stem) cells—The elixir of life?

open access: yesFEBS Letters, EarlyView.
The aging of HSCs (hematopoietic stem cells) and the blood system leads to the decline of other organs. Rejuvenating aged HSCs improves the function of the blood system, slowing the aging of the heart, kidney, brain, and liver, and the occurrence of age‐related diseases.
Emilie L. Cerezo   +4 more
wiley   +1 more source

On the accuracy of the post-Newtonian approximation [PDF]

open access: yes, 2002
We apply standard post-Newtonian methods in general relativity to locate the innermost circular orbit (ICO) of irrotational and corotational binary black-hole systems.
Blanchet, Luc
core   +2 more sources

The role and implications of mammalian cellular circadian entrainment

open access: yesFEBS Letters, EarlyView.
At their most fundamental level, mammalian circadian rhythms occur inside every individual cell. To tell the correct time, cells must align (or ‘entrain’) their circadian rhythm to the external environment. In this review, we highlight how cells entrain to the major circadian cues of light, feeding and temperature, and the implications this has for our
Priya Crosby
wiley   +1 more source

The Resonance Overlap and Hill Stability Criteria Revisited [PDF]

open access: yes, 2015
We review the orbital stability of the planar circular restricted three-body problem, in the case of massless particles initially located between both massive bodies.
Beaugé, C.   +2 more
core   +3 more sources

Three-body orbital stability criteria for circular orbits [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 1992
Previous investigations of the stability of hierarchical three-body systems by Harrington (1972, Cel. Mech., 1; 1975, AJ, 80 and 1977, AJ, 82), and by Black (1982, AJ, 87), Graziani & Black (1981, ApJ, 251) and Pendleton & Black (1983, AJ, 88) give conflicting results. A new numerical examination of such systems and the corresponding stability criteria
J. R. Donnison, D. F. Mikulskis
openaire   +1 more source

Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing

open access: yesFEBS Letters, EarlyView.
Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley   +1 more source

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