Results 11 to 20 of about 4,869 (218)
The Uniqueness of Hypergravity [PDF]
Journal of High Energy Physics, 2019 We show that consistent interactions of a spin-2 and a higher-spin Majorana fermion gauge fields in 3D flat space lead uniquely to Aragone-Deser hypergravity or its generalization.
Rahman, Rakibur
core +5 more sources
Hypergravity Attenuates Reactivity in Primary Murine Astrocytes
Biomedicines, 2022 Neuronal activity is the key modulator of nearly every aspect of behavior, affecting cognition, learning, and memory as well as motion. Hence, disturbances of the transmission of synaptic signals are the main cause of many neurological disorders. Lesions
Yannick Lichterfeld +8 more
doaj +5 more sources
Aleph_null Hypergravity in Three-Dimensions
, 2005 We construct hypergravity theory in three-dimensions with the gravitino \psi_{\mu m_1... m_n}{}^A with an arbitrary half-integral spin n+3/2, carrying also the index A for certain real representations of any gauge group G.
Hitoshi Nishino +6 more
core +2 more sources
Insect exoskeletons react to hypergravity. [PDF]
Proc Biol Sci, 2023 A typical feature of biological materials is their ability to adapt to mechanical load. However, it is not known whether the cuticle exoskeleton, one of the most common biological structures, also shares this trait. Here, we show direct experimental evidence that prolonged exposure to hypergravity conditions affects the morphology and biomechanics of ...
Stamm K, Dirks JH.
europepmc +3 more sources
Human cardiovascular adaptation to hypergravity
American Journal of Physiology-Regulatory, Integrative and Comparative Physiology, 2022 Despite decades of experience from high-gravitoinertial (G) exposures in aircraft and centrifuges, information is scarce regarding primary cardiovascular adaptations to +Gz loads in relaxed humans. Thus, effects of G-training are typically evaluated after regimens that are confounded by concomitant use of anti-G straining maneuvers, anti-G suits, and ...
Ola Eiken +3 more
openaire +3 more sources
Hypergravity in five dimensions [PDF]
Physical Review D, 2020 We show that a spin-$5/2$ field can be consistently coupled to gravitation without cosmological constant in five-dimensional spacetimes. The fermionic gauge "hypersymmetry" requires the presence of a finite number of additional fields, including a couple of $U(1)$ fields, a spinorial two-form, the dual of the graviton (of mixed $(2,1)$ Young symmetry ...
Fuentealba, Oscar +2 more
openaire +3 more sources
Effects of Hypergravity on Osteopontin Expression in Osteoblasts. [PDF]
PLoS ONE, 2015 Mechanical stimuli play crucial roles in bone remodeling and resorption. Osteopontin (OPN), a marker for osteoblasts, is important in cell communication and matrix mineralization, and is known to function during mechanotransduction.
Shuai Zhou +4 more
doaj +1 more source
Planarians Sense Simulated Microgravity and Hypergravity [PDF]
BioMed Research International, 2014 Planarians are flatworms, which belong to the phylumPlatyhelminthes.They have been a classical subject of study due to their amazing regenerative ability, which relies on the existence of adult totipotent stem cells. Nowadays they are an emerging model system in the field of developmental, regenerative, and stem cell biology.
T. Adell +3 more
openaire +6 more sources
Effects of gravity changes on gene expression of BDNF and serotonin receptors in the mouse brain. [PDF]
PLoS ONE, 2017 Spaceflight entails various stressful environmental factors including microgravity. The effects of gravity changes have been studied extensively on skeletal, muscular, cardiovascular, immune and vestibular systems, but those on the nervous system are not
Chihiro Ishikawa +9 more
doaj +1 more source
Hypergravity disrupts murine intestinal microbiota [PDF]
Scientific Reports, 2019 AbstractDuring spaceflight, organisms are subjected to various physical stressors including modification of gravity (G) that, associated with lifestyle, could lead to impaired immunity, intestinal dysbiosis and thus potentially predispose astronauts to illness.
Corentine Alauzet +7 more
openaire +2 more sources