Search results for " coro"
showing 10 items of 1850 documents
Stipe dentro il pithos
2005
The subject of the chapter is the study of all the materials collected in the so-called “stipe inside the pithos” found on the acropolis of Gela during the excavations conducted in the 1960s. The materials are examined and an interpretative hypothesis is advanced on the divinity to whom the offering is addressed
The structure of coronal plasma in active stellar coronae from density measurements
2005
We have analyzed high-resolution X-ray spectra of a sample of 22 active stars observed with the High Energy Transmission Grating Spectrometer (HETGS) on Chandra in order to investigate their coronal plasma density, using the lines of the He-like ions O VII, Mg XI, and Si XIII. Si XII lines in all stars of the sample axe compatible with the low-density limit (i.e. n(e) = 10(30) erg/s); O VII lines yield much lower densities of a few 10(10) cm(-3). Our results indicate that the "hot" and "cool" plasma resides in physically different structures. Our findings imply remarkably compact coronal structures, especially for the hotter (similar to 7 MK) plasma emitting the Mg xi lines characterized by…
Chandra study of the eclipsing M dwarf binary, YY Gem
2012
The eclipsing M dwarf binary system, YY Gem, was observed using Chandra covering 140 ks (2Prot) in total, split into two even exposures separated by 0.76 d (0.94 Prot). The system was extremely active: three energetic flares were observed over the course of these observations. The flaring and non-flaring states of the system are analysed in this paper. The activity level increased between the first and second observations even during the quiescent (non-flaring) phases. An analysis of the dynamics of the X-ray-emitting plasma suggests that both components are significantly active. Contemporaneous Hα spectra also suggest that both components show similar levels of activity. The primary star i…
Euripides’Andromache, a Choral Tragedy
2013
Andrómaca es una tragedia coral por diversas razones: por el papel tan singular que el coro desempeña en ella desde el comienzo mismo; y porque en ella, a través de dos mujeres enfrentadas, Andrómaca y Hermíone, convergen en la trama dramática una serie de parejas/tríos que marcan el discurrir de unas sagas épico-dramáticas de gran rendimiento en la tradición cultural y literaria griega. Es también una tragedia coral porque en ella se alcanza el destino fi nal de las dos partes implicadas en la mayor guerra mítica de la Antigüedad. Andromache is a choral tragedy because the singular role of the chorus in the whole play and because in its plot there is a group of couples/trios, which lead th…
Origine e decorso anomalo della coronaria destra in un caso fatale di tromboembolismo polmonare post-operatorio
2007
La rilevanza del tromboembolismo polmonare trova giustificazione nella sua grande incidenza, nei dati sulla mortalità e nella sua brusca modalità di insorgenza, che la rende trattabile durante la fase acuta. L'arma più efficace contro la TEP è la prevenzione e a tal fine sono state proposte numerose linee guida. Scopo del presente lavoro è illustrare un evento tromboembolico polmonare fatale determinatosi nonostante la somministrazione di una tromboprofilassi aderente alle più accreditate linee guida emanate sull'argomento. La particolare origine anomala della coronaria destra del soggetto, non nota in vita, ha certamente favorito il decesso. Gli Autori pertanto illustrano il ruolo causale …
2020 ESC Guidelines for the management of acute coronary syndromes in patients presenting without persistent ST-segment elevation
2020
2020 ESC Guidelines for the management of acute coronary syndromes in patients presenting without persistent ST-segment elevation
More nature in the city
2020
According to projects and practices that the Italian botanists and ecologists are carrying out for bringing “more nature in the city”, new insights for a factual integration between ecological perspectives and more consolidated aesthetic and agronomic approaches to the sustainable planning and management of urban green areas are provided.
Human Papillomavirus Type 16 E7 Peptide-Directed CD8+ T Cells from Patients with Cervical Cancer Are Cross-Reactive with the Coronavirus NS2 Protein
2003
ABSTRACTHuman papillomavirus type 16 (HPV16) E6 and E7 oncoproteins are required for cellular transformation and represent candidate targets for HPV-specific and major histocompatibility complex class I-restricted CD8+-T-cell responses in patients with cervical cancer. Recent evidence suggests that cross-reactivity represents the inherent nature of the T-cell repertoire. We identified HLA-A2 binding HPV16 E7 variant peptides from human, bacterial, or viral origin which are able to drive CD8+-T-cell responses directed against wild-type HPV16 E7 amino acid 11 to 19/20 (E711-19/20) epitope YMLDLQPET(T) in vitro. CD8+T cells reacting to the HLA-A2-presented peptide from HPV16 E711-19(20)recogni…
Immune responses during COVID-19 infection
2020
International audience; Over the past 16 years, three coronaviruses (CoVs), severe acute respiratory syndrome CoV (SARS-CoV) in 2002, Middle East respiratory syndrome CoV (MERS-CoV) in 2012 and 2015, and SARS-CoV-2 in 2020, have been causing severe and fatal human epidemics. The unpredictability of coronavirus disease-19 (COVID-19) poses a major burden on health care and economic systems across the world. This is caused by the paucity of in-depth knowledge of the risk factors for severe COVID-19, insufficient diagnostic tools for the detection of SARS-CoV-2, as well as the absence of specific and effective drug treatments. While protective humoral and cellular immune responses are usually m…
Molecular Basis of SARS-CoV-2 Nsp1-Induced Immune Translational Shutdown as Revealed by All-Atom Simulations.
2021
The severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) pandemic represents the most severe global health crisis in modern human history. One of the major SARS-CoV-2 virulence factors is nonstructural protein 1 (Nsp1), which, outcompeting with the binding of host mRNA to the human ribosome, triggers a translation shutdown of the host immune system. Here, microsecond-long all-atom simulations of the C-terminal portion of the SARS-CoV-2/SARS-CoV Nsp1 in complex with the 40S ribosome disclose that SARS-CoV-2 Nsp1 has evolved from its SARS-CoV ortholog to more effectively hijack the ribosome by undergoing a critical switch of Q/E158 and E/Q159 residues that perfects Nsp1's interactions…