Results 61 to 70 of about 152,438 (313)
The Darkness of Dark Matter and Dark Energy
The visible universemdashincluding Earth, the sun, other stars, and galaxiesmdashis made of protons, neutrons, and electrons bundled together into atoms. Perhaps one of the most surprising discoveries of the 20th century was that this ordinary, or baryonic, matter makes up less than 5 percent of the mass of the universe.
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The dark side of cosmology: Dark matter and dark energy [PDF]
A simple model with only six parameters (the age of the universe, the density of atoms, the density of matter, the amplitude of the initial fluctuations, the scale dependence of this amplitude, and the epoch of first star formation) fits all of our cosmological data . Although simple, this standard model is strange.
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An unexpected alternative interaction site for ethyl viologen was identified in formate dehydrogenase 1 from Methylorubrum extorquens. Combined mutagenesis, kinetic analysis, and docking revealed that aromatic residues near an iron–sulfur cluster enable flavin mononucleotide‐independent electron transfer, offering a framework for engineering improved ...
Eleni G. Poloniataki, Yong Hwan Kim
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Is It the Dark in Dark Chocolate? [PDF]
When we first entered this scientific area about 10 years ago, we did not fully appreciate the emotional content of discussions involving chocolate. Contacts between medical scientists and the lay press tend to be sporadic. When chocolate is the issue, however, the lay press interest becomes intense and widespread.
Norman K. Hollenberg, Naomi D.L. Fisher
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From mice to humans—divergent strategies for intestinal homeostasis and regeneration
Recent advances such as organoid genome editing, xenotransplantation, imaging, and whole‐genome sequencing have enabled direct studies of human intestinal stem cells (ISCs). These studies reveal species‐specific features, including slower ISC proliferation, distinct injury responses, slower somatic mutation accumulation in humans, and an inverse ...
Keiko Ishikawa +2 more
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Velocity-dependent interactions in a fundamental-string dominated universe lead quite naturally, with reasonable assumptions on initial conditions, to an accelerating expanding universe without assuming the existence of a cosmological constant. This result also holds generically for a universe dominated by moving extremal black holes, owing to a ...
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Drosophila park mutants serve as a model for Parkinson's disease. We used this strain to investigate the connection between oxidative stress and the circadian clock mechanism. We showed that increased oxidative stress affects the physiology of pacemaker cells, disrupting their daily structural plasticity. Lack of rhythmic signaling from pacemaker cells
Kamila Zientara +3 more
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Comparison Symbolism of Light and Darkness on Mystical Vision between Kobrāwīyids and Eastern Christianity [PDF]
In this research, ‘vision’ in Kobrāwīyids and Orthodox Christian mysticism is studied comparatively. Most of the mystics of both ways have experienced God as light, but some of them have experienced God in darkness or black light symbol.
nader mohammad zadeh
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The Rothko Chapel: Profane or Sacred Space?
Despite the atheism of renowned abstract expressionist painter Mark Rothko, the artist was commissioned by Christians to create a sacred space that was originally intended to be used by religious believers: the Rothko Chapel in Houston, Texas.
Mark Allen
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Mirrors and Reflections [Elektronisk resurs] : The Wall of Darkness
Mirrors and Reflections is a live electronic piece with a surround sound fixed media part composed by Lars Bröndum. The piece was performed live by Lars Bröndum on Theremin and live electronics at the New York City Electroacoustic Music Festival (NYCEMF)
Bröndum, Lars,
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