Results 101 to 110 of about 118,465 (262)

Phase Transitions in Systems of Interacting Species [PDF]

open access: yesarXiv, 2014
We discuss an autocatalytic reaction system: the cyclic competition model A1 + A2 --> 2 A2, A2 + A3 --> 2 A3, A3 + A4 --> 2 A4, A4 + A1 --> 2 A1), as well as its neutral counterpart. Migrations are introduced into the model. When stochastic phenomena are taken into account, a phase transition between a ``fixation'' and a ``neutral'' regime is observed.
arxiv  

A Novel Phospholipase A2 Isolated from Palythoa caribaeorum Possesses Neurotoxic Activity

open access: yesToxins, 2019
Zoanthids of the genus Palythoa are distributed worldwide in shallow waters around coral reefs. Like all cnidarians, they possess nematocysts that contain a large diversity of toxins that paralyze their prey.
Miguel Cuevas-Cruz   +11 more
doaj   +1 more source

Structure-property relationship of Co$_2$MnSi thin films in response to He$^+$ -irradiation [PDF]

open access: yesarXiv, 2018
We investigated the structure-property relationship of Co$_2$MnSi Heusler thin films upon the irradiation with He$^+$ ions. The variation of the crystal structure with increasing ion fluence has been probed using nuclear magnetic resonance (NMR) and transmission electron microscopy (TEM), and associated with the corresponding changes of the magnetic ...
arxiv  

Differential determination of phospholipase A2 and PAF-acetylhydrolase in biological fluids using fluorescent substrates

open access: yesJournal of Lipid Research, 1999
The purpose of the present study was the development and evaluation of a fluorimetric method for the screening and differential determination of phospholipase A2 and PAF-acetylhydrolase in bronchoalveolar lavage (BAL) fluid and serum.
Eirini I. Kitsiouli   +2 more
doaj  

Variaciones en las actividades enzimáticas del veneno de la serpiente Bothrops atrox "jergón", de tres zonas geográficas del Perú Variation of the enzymatic activity of Bothrops atrox "jergon" snake venom from three geographic regions, Peru

open access: yesRevista Peruana de Medicina Experimental y Salud Pública, 2012
Objetivos. Estudiar la variabilidad en la composición y actividades enzimáticas entre venenos de ejemplares adultos de Bothrops atrox. Materiales y métodos. Se emplearon venenos de serpientes adultas procedentes de Amazonas, Junín y Ucayali.
César Ortiz   +4 more
doaj  

A2E: Attribute-based Anonymity-Enhanced Authentication for Accessing Driverless Taxi Service [PDF]

open access: yesarXiv
Driverless vehicle as a taxi is gaining more attention due to its potential to enhance urban transportation efficiency. However, both unforeseen incidents led by unsupervised physical users' driverless taxi (DT) rides and personalized needs of users when riding in a DT necessitate the authentication of user identity and attributes.
arxiv  

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