Search results for "cc"
showing 10 items of 30638 documents
Pyrrolomycins as novel agents against staphylococcal biofilms
2009
Bacterial biofilms: a challenge in the discovery of new anti-infective agents.
2010
The ability to form a biofilm, bacterial communities able to grow on surfaces and surrounded by an extracellular polymeric substance biofilm agents.Our research group focused on discovering of novel chemical agents of potential therapeutic utility in the treatment of staphylococcal biofilm-associatedinfections by screening novel compounds (synthetic or natural). In a recent study, the antistaphylococcalbiofilm activity of pyrrolomycins C,D, F1, F2a, F2b, F3 a family of halogenated pyrroles which are naturally produced byActinosporangium vitaminophylum and of the synthesized related compounds I, II, III were investigated and compared (Schillaci et al, 2010). We also focused on marine inverte…
Implicación y caracterización de Staphylococcus aureus en las poliposis nasales.
2016
La rinosinusitis crónica (RSC) es una enfermedad inflamatoria, de más de 12 semanas de duración, que afecta a la mucosa de las fosas nasales y de los senos paranasales. Se caracteriza por presentar, obstrucción o congestión nasal, y/o rinorrea; y además poder presentar uno de estos dos síntomas, dolor o sensación de presión facial, y/o pérdida total o parcial del sentido del olfato. La RSC se divide en dos grupos RSC con ausencia o RSC con presencia de poliposis nasal (PN). Además clínicamente la rinosinusitis crónica con presencia de poliposis nasal (RSCcPN) pueden subclasificarse en (a) RSCcPN eosinofílica, que es bilateral e idiopática, pudiendo presentarse de forma aislada, asociada a a…
Concentración mínima inhibitoria (CMI) de vancomicina para Staphylococcus aureus y riesgo de bacteriemia complicada
2019
Staphylococcus aureus (S. aureus) se encuentra ampliamente distribuido por todo el mundo, comportándose tanto como patógeno como comensal. Se estima que entre un 25-50% de personas sanas puede colonizarse de manera persistente o transitoria (Longo, 2012). Este microorganismo constituye una de las principales causas de infecciones nosocomiales, siendo una de las primeras causas de bacteriemias primarias (Rigby and DeLeo, 2012) y encabezando la lista de los productores de infecciones de piel y tejidos blandos, heridas quirúrgicas, endocarditis y sepsis relacionada con catéter (Seidl et al., 2011). La bacteriemia se define como la presencia de bacterias viables en sangre; ésta puede o no estar…
The XMM-Newton Extended Survey of the Taurus Molecular Cloud (XEST)
2007
(abridged:) The XMM-Newton Extended Survey of the Taurus Molecular Cloud (XEST) surveys the most populated ~5 square degrees of the Taurus star formation region, using the XMM-Newton X-ray observatory to study the thermal structure, variability, and long-term evolution of hot plasma, to investigate the magnetic dynamo, and to search for new potential members of the association. Many targets are also studied in the optical, and high-resolution X-ray grating spectroscopy has been obtained for selected bright sources. The X-ray spectra have been coherently analyzed with two different thermal models (2-component thermal model, and a continuous emission measure distribution model). We present ov…
High Energy Emission and its Variability in Young Stellar Objects
2019
Young stars show a variety of highly energetic phenomena, from accretion and outflow processes to hot coronal plasmas confined in their outer atmosphere, all regulated by the intense stellar magnetic fields. Many aspects on each of these phenomena are debated, but, most notably, their complex mutual interaction remains obscure. In this work I report how these phenomena are simultaneously responsible for the high-energy emission from young stars, with a special focus on the expected and observed variability in the X-ray band. Investigating variations in the X-ray emission from young stars allows us to pose constraints on flare and coronal plasma properties, coronal heating, accretion stream …
Evidence of a non-conservative mass transfer in the ultra-compact X-ray source XB 1916-053
2020
The dipping source XB 1916-053 is a compact binary system with an orbital period of 50 min harboring a neutron star. Using ten new {\it Chandra} observations and one {\it Swift/XRT} observation, we are able to extend the baseline of the orbital ephemeris; this allows us to exclude some models that explain the dip arrival times. The Chandra observations provide a good plasma diagnostic of the ionized absorber and allow us to determine whether it is placed at the outer rim of the accretion disk or closer to the compact object. From the available observations we are able to obtain three new dip arrival times extending the baseline of the orbital ephemeris from 37 to 40 years. From the analysis…
Regulación del factor transcripcional Whi7 y la proteinquinasa C en el proceso de Start y el checkpoint de integridad del DNA
2019
Start es el principal punto de control del ciclo celular en el que las células se comprometen a una nueva ronda de división celular. Este punto de control implica la activación irreversible de un programa transcripcional por los complejos Cdc28-Cln a través de la inactivación del represor transcripcional de Start Whi5. En este trabajo se proporcionan nuevas claves sobre cómo Whi7, una proteína relacionada a nivel de secuencia con Whi5, reprime Start. Nuestros resultados demuestran que Whi7 es un parálogo genuino de Whi5. Ambas proteínas colaboran en la represión de Start, aunque presentan diferencias importantes en su regulación que convierten a Whi7 en el represor de Start por excelencia e…
Intervista a Dario Maccarrone
2017
Il contributo riporta gli esiti dell'intervista effettuata a Dario Maccarrone, curata dall'autore dell'articolo, in riferimento al ruolo delle startup nei territori interni.
Analisi degli infortuni nel settore della sanità in Sicilia attraverso i flussi informtivi INAIL REGIONI: limiti e scenari di miglioramento dei dati
2011
An analysis on the injury events occurred to the employees in Sicilian hospitals from 2006 to 2008 was carried out, thanks to data filed in the INAL database “Flussi Informativi INAIL ISPESL REGIONI”. A frequency distribution of accidents and an investigation of injury events modality of occurrence have been performed according to ESAW codification. Data limitation and critical aspects have been highlighted in order to propose development in data management process.