Search results for "Fermi"
showing 10 items of 1388 documents
Quality of life and disability of chronic non-cancer pain in adults patients attending pain clinics: A prospective, multicenter, observational study
2020
What do we already know about this subject? • Chronic pain can have negative effects on quality of life. It is associated with a reduced ability to work, quality of life and disability, conditions that should be treated in specialized pain management clinics. In Italy very little information on clinical outcomes after chronic pain treatments is provided. What does our study add to the already existing information • This study is the first to provide clinical data about the impact of chronic pain in terms of quality of life and disability on patients who attended pain management clinics in Italy. • Chronic pain has a negative impact on quality of life and disability and causes presenteeism. …
Evidence-Based Practice Needs Stronger Prognostic Scores for the Prediction of Recurrent Stroke
2010
To the Editor: The article by Weimer et al1 is of great interest for internists and neurologists that have to prognostically stratify patients with acute or subacute cerebrovascular disease based on risk scores. However, we have to comprehend the actual and pragmatic value of the study findings for clinical practice. We previously underscored the …
Anomalous temperature dependence of the IR spectrum of polyalanine
1997
Abstract We have studied the temperature dependence of the infrared spectra of acetanilide (ACN), tryptophan–(alanine) 15 , and tyrosine–(alanine) 15 . No sidebands of the amide-I vibration were observed in the polypeptides, but two anomalous sidebands of the NH stretch with a similar temperature dependence as that of the anomalous amide-I vibrational mode at 1650 cm −1 of crystalline ACN were detected. Fermi resonance combined with the appearance of a red-shifted sideband of NH stretch through coupling to lattice modes seems to explain this band structure. Observations are indicative of excitons that may occur in polypeptides as well as in single crystals of ACN.
The role of different game-genres in predicting internet gaming disorder (IGD)
2020
Introduction: Internet gaming disorder (IGD) is a new diagnosis in DSM 5 worth of research. New potentially addictive features are emerging in pay- and free-to-play videogames, involving different at-risk populations of gamers. However, few studies have examined whether and how different game-genres can contribute to the risk of IGD. Objectives: This study aimed to investigate how game-genres can predict IGD, accounting for alexithymia scores, time-related play- ing habits, and other predictors. Methods: Participants were gamers joining online communities, surveyed about which games they played more than 20 hours in their lifetime, time-variables, other stressors and alexithymia scores. A s…
Cu–Cu interactions in the transparent p-type conductors: CuAlO2 and SrCu2O2
2003
Abstract Electronic structures of the p-type Transparent Conducting Oxides (TCO): CuAlO2 and SrCu2O2 are calculated using the Tight Binding Linearized Muffin Tin Orbital within the Atomic Sphere Approximation method (TB-LMTO-ASA). The band structures indicate two gaps for CuAlO2 (an indirect one with ΔE≈0.45 eV and a direct one with ΔE≈1.25 eV) and one direct gap for SrCu2O2 (with ΔE≈2 eV). In both oxides the Cu states are dominant at the top of the valence band, close to the Fermi level and the existence of weak Cu–Cu bonding interactions is revealed through the Integrated Crystal Orbital Hamiltonian Population (ICOHP). The presence of such interactions suggests that for the hole doped oxi…
Chronic Non-cancer Pain Management in a Tertiary Pain Clinic Network: a Retrospective Study
2022
Introduction: Chronic pain is a distressing condition that should be treated in specialized pain clinics. Pain clinics offer a holistic, evidence-based approach, including pharmacological, complementary, and invasive treatments. This study aimed to provide preliminary information regarding chronic pain treatments and identify reasons for accessing an important hub-spoke pain clinic network. Methods: A retrospective multicenter cross-sectional study was carried out. A total of 1606 patients’ records were included. Patients were selected from the 26 pain clinics of a single region in Italy. Univariate and multivariate logistic regression models were used. Results: Multivariate models showed t…
Hints of an axion-like particle mixing in the GeV gamma-ray blazar data?
2013
Axion-Like Particles (ALPs), if exist in nature, are expected to mix with photons in the presence of an external magnetic field. The energy range of photons which undergo strong mixing with ALPs depends on the ALP mass, on its coupling with photons as well as on the external magnetic field and particle density configurations. Recent observations of blazars by the Fermi Gamma-Ray Space Telescope in the 0.1-300 GeV energy range show a break in their spectra in the 1-10 GeV range. We have modeled this spectral feature for the flat-spectrum radio quasar 3C454.3 during its November 2010 outburst, assuming that a significant fraction of the gamma rays convert to ALPs in the large scale jet of thi…
Why Have Many of the Brightest Radio-loud Blazars Not Been Detected in Gamma-Rays by Fermi?
2015
We use the complete MOJAVE 1.5 Jy sample of active galactic nuclei (AGNs) to examine the gamma-ray detection statistics of the brightest radio-loud blazars in the northern sky. We find that 23% of these AGNs were not detected above 0.1 GeV by the Fermi-LAT during the four-year 3FGL catalog period partly because of an instrumental selection effect and partly due to their lower Doppler boosting factors. Blazars with synchrotron peaks in their spectral energy distributions located below 10^(13.4) Hz also tend to have high-energy peaks that lie below the 0.1 GeV threshold of the LAT, and are thus less likely to be detected by Fermi. The non-detected AGNs in the 1.5 Jy sample also have significa…
The Gamma-Ray Emitting Radio-Loud Narrow-Line Seyfert 1 Galaxy PKS 2004-447 II. The Radio View
2015
Gamma-ray detected radio-loud narrow-line Seyfert 1 (g-NLS1) galaxies constitute a small but interesting sample of the gamma-ray loud AGN. The radio-loudest g-NLS1 known, PKS 2004-447, is located in the southern hemisphere and is monitored in the radio regime by the multiwavelength monitoring program TANAMI. We aim for the first detailed study of the radio morphology and long-term radio spectral evolution of PKS 2004-447, which are essential to understand the diversity of the radio properties of g-NLS1s. The TANAMI VLBI monitoring program uses the Australian Long Baseline Array (LBA) and telescopes in Antarctica, Chile, New Zealand, and South Africa to monitor the jets of radio-loud active …
Radio and gamma-ray properties of extragalactic jets from the TANAMI sample
2016
Using high-resolution radio imaging with VLBI techniques, the TANAMI program has been observing the parsec-scale radio jets of southern (declination south of -30{\deg}) gamma-ray bright AGN simultaneously with Fermi/LAT monitoring of their gamma-ray emission. We present the radio and gamma-ray properties of the TANAMI sources based on one year of contemporaneous TANAMI and Fermi/LAT data. A large fraction (72%) of the TANAMI sample can be associated with bright gamma-ray sources for this time range. Association rates differ for different optical classes with all BL Lacs, 76% of quasars and just 17% of galaxies detected by the LAT. Upper limits were established on the gamma-ray flux from TAN…