Results 61 to 70 of about 2,755,725 (248)
Stem cell research & therapeutics, 2017 Melatonin is a pleiotropic hormone with powerful antioxidant activity both in vivo and in vitro. The present study aimed to investigate the effects of melatonin on the proliferation efficiency of neonatal mouse spermatogonial stem cells (SSCs) using a ...
S. Navid, M. Abbasi, Y. Hoshino
semanticscholar +1 more source
The Golden City on the Edge: Economic Geography and Jihad over Centuries [PDF]
arXiv, 2022 This paper uncovers the evolution of cities and Islamist insurgencies, so called jihad, in the process of the reversal of fortune over the centuries. In West Africa, water access in ancient periods predicts the locations of the core cities of inland trade routes -- the trans-Saharan caravan routes -- founded up to the 1800s, when historical Islamic ...
arxiv
Frontiers in Microbiology, 2016 We aimed to assess the intestinal colonization dynamics by multiple extended-spectrum cephalosporin-resistant Enterobacteriaceae (ESC-R-Ent) clones in Swiss travelers to India, a country with high prevalence of these multidrug-resistant pathogens ...
João Pires +7 more
semanticscholar +1 more source
One tree, many colonies: colony structure, breeding system and colonization events of host trees in tunnelingMelissotarsusants [PDF]
, 2020 Pierre‐André Eyer +2 more
openalex +2 more sources
Annals of Clinical Microbiology and Antimicrobials, 2023 Background Spectra™ VRE agar (Remel, Lenexa, KS) is a chromogenic agar that is FDA approved for screening patients for VRE colonization. The package insert recommends confirming isolates with identification and susceptibility testing, but confirming ...
Kendall Kling +7 more
doaj +1 more source
Mesoscopic colonization of a spectral band [PDF]
, 2009 We consider the unitary matrix model in the limit where the size of the matrices become infinite and in the critical situation when a new spectral band is about to emerge. In previous works the number of expected eigenvalues in a neighborhood of the band was fixed and finite, a situation that was termed "birth of a cut" or "first colonization".
arxiv +1 more source
The Cosmic Hitchhikers Hypothesis: Extraterrestrial Civilizations Using Free-Floating Planets for Interstellar Colonization [PDF]
arXiv, 2022 I propose the Cosmic Hitchhikers hypothesis as follows. Advanced extraterrestrial civilizations may use free-floating planets as interstellar transportation for space exploration and interstellar colonization. Large groups or populations of their biological species, post-biological species, and technologies may become Cosmic Hitchhikers when they ride ...
arxiv
Radial Domany-Kinzel Models with Mutation and Selection [PDF]
Phys. Rev. E 87, 012103 (2013), 2012 We study the effect of spatial structure, genetic drift, mutation, and selective pressure on the evolutionary dynamics in a simplified model of asexual organisms colonizing a new territory. Under an appropriate coarse-graining, the evolutionary dynamics is related to the directed percolation processes that arise in voter models, the Domany-Kinzel (DK ...
arxiv +1 more source
Dental Research Journal, 2016 Background: Orthodontic therapy has oral ecological changes causing increased numbers of mutans streptococci in saliva and plaque. The purpose of this study was to estimate counts and colonization pattern of Streptococcus mutans after application of ...
C. Shukla +3 more
semanticscholar +1 more source
Infection and Infecting — the Key Moments of Infectious Disease Occurrence
Zdorovʹe Rebenka, 2014 Contact with foreign microorganisms in/on the human body leads to infection. This process is accompanied by the interaction of foreign microorganisms with human microbiota and factors of innate immunity.
I.V. Bogadelnikov +3 more
doaj +1 more source