Results 61 to 70 of about 7,699,559 (289)

Retrograde orbits perturbed by a third-body [PDF]

open access: yesJournal of the Brazilian Society of Mechanical Sciences and Engineering, 2005
This paper develops a semi-analytical study of the perturbation caused to a spacecraft by a third body involved in the dynamics. There are several important applications for this research, such as to calculate the effect of lunar and solar perturbations on high-altitude Earth satellites.
openaire   +3 more sources

Tribofilms Forming in Oil-Lubricated Contacts

open access: yesLubricants, 2016
The subject of the present paper is the characterization of third bodies of run-in systems. By means of continuous friction and wear measurement, lubricated steel-steel and steel-aluminum contacts were evaluated.
Matthias Scherge   +2 more
doaj   +1 more source

Enteropathogenic E. coli shows delayed attachment and host response in human jejunum organoid‐derived monolayers compared to HeLa cells

open access: yesFEBS Letters, EarlyView.
Enteropathogenic E. coli (EPEC) infects the human intestinal epithelium, resulting in severe illness and diarrhoea. In this study, we compared the infection of cancer‐derived cell lines with human organoid‐derived models of the small intestine. We observed a delayed in attachment, inflammation and cell death on primary cells, indicating that host ...
Mastura Neyazi   +5 more
wiley   +1 more source

Experimental Investigation of Frictional Resistance in Sliding Contact between Undulating Surfaces and Third-Body Particles

open access: yesMachines
The third-body particle-involved sliding contact between two rough rubbers with wavy surfaces is experimentally studied. The experiment is designed to isolate the direct contact between the first bodies so that friction resistance is induced completely ...
Qiang Li, Markus Heß
doaj   +1 more source

A study of the moderate altitude frozen orbits around the Moon

open access: yesResults in Physics, 2020
Lunar frozen orbits, characterized by fixed eccentricity and argument of perigee on average, have been previously studied using different dynamical models.
Magdy A. Sirwah   +3 more
doaj   +1 more source

Body perception in newborns [PDF]

open access: yes, 2013
Body ownership and awareness has recently become an active topic of research in adults using paradigms such as the “rubber hand illusion” and “enfacement” [1, 2, 3, 4, 5, 6, 7, 8, 9, 10 and 11].
Johnson, Mark H.   +15 more
core   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

open access: yesFEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Close encounters of the third-body kind

open access: yesThe Astrophysical Journal, 1994
We simulated encounters involving binaries of two eccentricities: e = 0 (i.e., circular binaries) and e = 0.5. In both cases the binary contained a point mass of 1.4 solar masses (i.e., a neutron star) and a 0.8 solar masses main-sequence star modeled as a polytrope. The semimajor axes of both binaries were set to 60 solar radii (0.28 AU).
M. B. Davies, W. Benz, J. G. Hills
openaire   +1 more source

Opportunity and influence: the third sector and the 2010 general election

open access: yes, 2010
This paper explores how the different voices and interests of the third sector, political parties and media have shaped and reflected the policy agenda over the course of the 2010 general election campaign and into the early post-election period.
Parry, Jane   +2 more
core   +1 more source

Friction transitions and connections to third bodies for a Cd coating on steel substrate

open access: yesFriction, 2020
Cd coating is used in aerospace industries from last five decades due to its sacrificial protection and lubrication properties. Although Cd coating is primarily used due to its sacrificial corrosion protection when applied on steel substrate, the added ...
Priyadarshi Behera   +4 more
doaj   +1 more source

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