Results 311 to 320 of about 25,035 (360)
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Journal of Bone and Mineral Research, 2006
Mechanical stimulation of cultured osteocytic cells attenuates their apoptosis. We report here that, conversely, reduced mechanical forces in the murine model of unloading by tail suspension increases the prevalence of osteocyte apoptosis, followed by ...
J. I. Aguirre +6 more
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Mechanical stimulation of cultured osteocytic cells attenuates their apoptosis. We report here that, conversely, reduced mechanical forces in the murine model of unloading by tail suspension increases the prevalence of osteocyte apoptosis, followed by ...
J. I. Aguirre +6 more
semanticscholar +1 more source
, 2014
The structure of the robust stabilization system of cable tension for the test bench of weightlessness simulation was developed. The algorithm of a parametric synthesis of the robust PI–controller based on the coefficient method and the criterion of ...
T. Ezangina, S. Gayvoronskiy
semanticscholar +1 more source
The structure of the robust stabilization system of cable tension for the test bench of weightlessness simulation was developed. The algorithm of a parametric synthesis of the robust PI–controller based on the coefficient method and the criterion of ...
T. Ezangina, S. Gayvoronskiy
semanticscholar +1 more source
The FASEB Journal, 2012
This study focused on the effects of short‐term microgravity (22 s) on the gene expression and morphology of endothelial cells (ECs) and evaluated gravisensitive signaling elements. ECs were investigated during four German Space Agency (Deutsches Zentrum
J. Grosse +20 more
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This study focused on the effects of short‐term microgravity (22 s) on the gene expression and morphology of endothelial cells (ECs) and evaluated gravisensitive signaling elements. ECs were investigated during four German Space Agency (Deutsches Zentrum
J. Grosse +20 more
semanticscholar +1 more source
Into Postmodern Weightlessness
Journal of Planning Education and Research, 1991Shifts in academic planning thought which became evident by 1980 in cluded skepticism that causal reason ing could serve as the cornerstone of sound planning practice. Some theo rists turned to examine the social construction of reality via communi cation and culture, and to ask what the implications would be for plan ning of noncausal perspectives ...
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Neurocomputing, 2016
The most commonly used model for Artificial Neural Networks (ANNs) is based on neurons that implement their inherent functionality by computing a weighted sum of the provided inputs and yielding their result by applying an activation function. The challenge in this model is to infer the right set of weights that should be used to ensure learning ...
Nedjah N +3 more
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The most commonly used model for Artificial Neural Networks (ANNs) is based on neurons that implement their inherent functionality by computing a weighted sum of the provided inputs and yielding their result by applying an activation function. The challenge in this model is to infer the right set of weights that should be used to ensure learning ...
Nedjah N +3 more
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The effects of weightlessness on the human organism and mammalian cells.
Current molecular medicine, 2011It has always been a desire of mankind to conquest Space. A major step in realizing this dream was the completion of the International Space Station (ISS).
J. Pietsch +6 more
semanticscholar +1 more source
New Scientist, 2009
Huge voids in space where gravity disappears could harbour a dangerous secret.
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Huge voids in space where gravity disappears could harbour a dangerous secret.
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Weightlessness: A case history
Acta Astronautica, 1975The facts presented represent, for convenience, a composite clinical picture of the three crewmen aboard Skylab II as observed by me.
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Random root movements in weightlessness
Physiologia Plantarum, 1996The dynamics of root growth was studied in weightlessness. In the absence of the gravitropic reference direction during weightlessness, root movements could be controlled by spontaneous growth processes, without any corrective growth induced by the gravitropic system.
Tor-Henning Iversen +3 more
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1986
The phenomenon of gravitation is characterized by the mutual attraction of any two bodies. The universal character of gravitation was first recognized by Isaac Newton who found the well-known law for the attraction force F acting between two mass points or homogeneous spherical bodies $$\rm F\, = \,\gamma Mm/R^2 $$ (3.1) M, m are the masses ...
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The phenomenon of gravitation is characterized by the mutual attraction of any two bodies. The universal character of gravitation was first recognized by Isaac Newton who found the well-known law for the attraction force F acting between two mass points or homogeneous spherical bodies $$\rm F\, = \,\gamma Mm/R^2 $$ (3.1) M, m are the masses ...
openaire +2 more sources