Search results for: A. De Angelis

Items from 1 to 20 out of 214 results

article

Machine learning to predict major bleeding during anticoagulation for venous thromboembolism: possibilities and limitations

Damián Mora, Jorge Mateo, José A. Nieto, Behnood Bikdeli, more

British Journal of Haematology > 201 > 5 > 971 - 981

Predictive tools for major bleeding (MB) using machine learning (ML) might be advantageous over traditional methods. We used data from the Registro Informatizado de Enfermedad TromboEmbólica (RIETE) to develop ML algorithms to identify patients with venous thromboembolism (VTE) at increased risk of MB during the first 3 months of anticoagulation. A total of 55 baseline variables were used as predictors...

article

Hypomimia in Parkinson’s disease: an axial sign responsive to levodopa

L. Ricciardi, A. De Angelis, L. Marsili, I. Faiman, more

European Journal of Neurology > 27 > 12 > 2422 - 2429

Background and purpose Hypomimia is a prominent clinical feature in people with Parkinson’s disease (PD), but it remains under‐investigated. We aimed to examine the clinical correlates of hypomimia in PD and to determine whether this is a levodopa‐responsive sign. Methods We included 89 people with PD. Hypomimia was assessed from digital video recordings by movement disorder specialists. Clinical...

article

Gamma-ray astrophysics

A. De Angelis, M. Mallamaci

The European Physical Journal Plus > 2018 > 133 > 8 > 1-18

. High-energy photons are a powerful probe for astrophysics and for fundamental physics in extreme conditions. In recent years, our knowledge of the most violent phenomena in the Universe has impressively progressed thanks to the advent of new detectors for gamma rays, for both ground-based and space-borne observations. This article reviews the present status of high-energy gamma-ray astrophysics,...

article

Studies on a silicon-photomultiplier-based camera for Imaging Atmospheric Cherenkov Telescopes

C. Arcaro, D. Corti, A. De Angelis, M. Doro, more

Nuclear Instruments and Methods in Physics Research Section A: Accelerators,... > 2017 > 876 > C > 26-30

Imaging Atmospheric Cherenkov Telescopes (IACTs) represent a class of instruments which are dedicated to the ground-based observation of cosmic VHE gamma ray emission based on the detection of the Cherenkov radiation produced in the interaction of gamma rays with the Earth atmosphere. One of the key elements of such instruments is a pixelized focal-plane camera consisting of photodetectors. To date,...

article

Performance of the MAGIC telescopes under moonlight

M.L. Ahnen, S. Ansoldi, L.A. Antonelli, C. Arcaro, more

Astroparticle Physics > 2017 > 94 > C > 29-41

MAGIC, a system of two imaging atmospheric Cherenkov telescopes, achieves its best performance under dark conditions, i.e. in absence of moonlight or twilight. Since operating the telescopes only during dark time would severely limit the duty cycle, observations are also performed when the Moon is present in the sky. Here we develop a dedicated Moon-adapted analysis to characterize the performance...

article

The e-ASTROGAM mission

The e-ASTROGAM Collaboration, A. De Angelis, V. Tatischeff, M. Tavani, more

Experimental Astronomy > 2017 > 44 > 1 > 25-82

e-ASTROGAM (‘enhanced ASTROGAM’) is a breakthrough Observatory space mission, with a detector composed by a Silicon tracker, a calorimeter, and an anticoincidence system, dedicated to the study of the non-thermal Universe in the photon energy range from 0.3 MeV to 3 GeV – the lower energy limit can be pushed to energies as low as 150 keV, albeit with rapidly degrading angular resolution, for the tracker,...

chapter

Measuring the best linear approximation of Wiener systems using multilevel sequences

A. De Angelis, J. Schoukens, K. R. Godfrey, P. Carbone

2017 IEEE International Instrumentation and Measurement Technology Conference (I2MTC) > 1 - 5

2017 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)

The problem of measuring the best linear approximation of a nonlinear system by means of multilevel excitation sequences is analyzed. A comparison between different types of sequences applied at the input of Wiener systems is provided by numerical simulations. The performance of the sequences is compared with a white Gaussian noise signal for reference purposes. It is shown that the randomized constrained...

article

Interfacial Tryptophan Residues Govern Transmembrane Helix Dynamics

Matthew J. McKay, Ashley N. Martfeld, Anna A. De Angelis, Stanley J. Opella, more

Biophysical Journal > 2017 > 112 > 3 Supplement 1 > 528a

article

New and old roles of the peripheral and brain renin–angiotensin–aldosterone system (RAAS): Focus on cardiovascular and neurological diseases

A Mascolo, M Sessa, C Scavone, A De Angelis, more

International Journal of Cardiology > 2017 > 227 > C > 734-742

It is commonly accepted that the renin–angiotensin–aldosterone system (RAAS) is a cardiovascular circulating hormonal system that plays also an important role in the modulation of several patterns in the brain. The pathway of the RAAS can be divided into two classes: the traditional pathway of RAAS, also named classic RAAS, and the non-classic RAAS. Both pathways play a role in both cardiovascular...

chapter

Practical synthesis of ternary sequences for system identification

A. De Angelis, J. Schoukens, K. R. Godfrey, P. Carbone

2016 IEEE International Instrumentation and Measurement Technology Conference Proceedings > 1 - 6

2016 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)

Several issues related to the practical synthesis of ternary sequences with specified spectra are addressed in this paper. Specifically, sequences with harmonic multiples of two and three suppressed are studied, given their relevance to system identification applications. In particular, the effect of non-uniform Digital to Analog Converter (DAC) levels on the spectral properties of the generated signal...

article

Differences in attitudes towards mental illness and psychiatry among medical students, before and after the academic course of psychiatry

M. Pascucci, M. La Montagna, E. Stella, A. De Angelis, more

European Psychiatry > 2016 > 33 > S > S218-S219

Stigma towards mental illness and psychiatry have a major impact on psychiatric patients’ quality of life; in particular, prejudicial beliefs make it more difficult for future doctors to send patients to mental health services, leading to a delay of necessary care.Our aim is to evaluate the stigma towards mental illness and psychiatry, in a sample of Italian medical students. We studied the differences...

article

Attitudes toward psychiatry and psychiatric patients in medical students: Can real-world experiences reduce stigma?

M. Pascucci, E. Stella, M. La Montagna, A. De Angelis, more

European Psychiatry > 2016 > 33 > S > S218

Stigma towards psychiatry and mental illness significantly worsens the quality of life of psychiatric patients. Negative prejudices in medical students make it difficult for future doctors to send patients to mental health services and promote an increased risk of premature death.Our aim is to assess stigma towards mental illness and psychiatry in medical students, and to study the influence of real-world...

article

Mental health and empathy: Do nursing students have better attitudes to psychiatric patients?

M. Pascucci, F. Capobianco, M. La Montagna, E. Stella, more

European Psychiatry > 2016 > 33 > S > S520

Stigma towards mental illness has a major impact on the quality of life and the health care of psychiatric patients. Several studies have reported that health professionals have more negative attitudes than general population.To explore empathy and attitudes towards mental illness in nursing students (NS) and non-health university students. Our purpose is to see how NS have more empathic and less...

article

Different attitudes toward psychiatry and psychiatric patients in nursing students: Can personal experiences reduce stigma?

M. Pascucci, G. Rubini, E. Stella, M. La Montagna, more

European Psychiatry > 2016 > 33 > S > S520-S521

Psychiatric patients often do not receive the same health treatment reserved for patients with no mental disorders. Stigma in mental-health nurses can worsen the patients’ healing time and quality of care.To explore the different attitudes towards mental illness and psychiatry in nursing students (NS) of the first and the final year of university, and the importance of having visited a psychiatric...

chapter

Raman spectroscopy and digital holography reveal visible light photodamage on human sperm cells

A. De Angelis, M. A. Ferrara, G. Coppola, A. C. De Luca

18th Italian National Conference on Photonic Technologies (Fotonica 2016) > 1 - 4

18th Italian National Conference on Photonic Technologies (Fotonica 2016)

A complete label-free and non-destructive analysis of semen quality (in terms of morphology and biochemical structure integrity) is required before artificial insemination. An optical approach based on digital holography and Raman spectroscopy was proposed and simultaneously applied for the fast characterization of single selected sperm cells. In this work, we have used this approach to simultaneously...

article

The major upgrade of the MAGIC telescopes, Part II: A performance study using observations of the Crab Nebula

J. Aleksić, S. Ansoldi, L.A. Antonelli, P. Antoranz, more

Astroparticle Physics > 2016 > 72 > C > 76-94

MAGIC is a system of two Imaging Atmospheric Cherenkov Telescopes located in the Canary island of La Palma, Spain. During summer 2011 and 2012 it underwent a series of upgrades, involving the exchange of the MAGIC-I camera and its trigger system, as well as the upgrade of the readout system of both telescopes. We use observations of the Crab Nebula taken at low and medium zenith angles to assess the...

article

P.4.b.005 Changes in high frequency oscillations (HFOs) in anxiety disorders: a pilot study

D.S Hatzigiakoumis, R. Schipani, P. Grandinetti, A. De Angelis, more

European Neuropsychopharmacology > 2015 > 25 > Supplement 2 > S559

chapter

A combined holographic and Raman microscopy approach for the assessment of spermatozoa

A. De Angelis, M.A. Ferrara, G. Di Caprio, S. Manago, more

2015 Fotonica AEIT Italian Conference on Photonics Technologies > 1 - 4

2015 Fotonica AEIT Italian Conference on Photonics Technologies

A Digital Holography-Raman microscopy combined approach has been proposed in this study as a promising method for a non-invasive, morphological and biochemical characterization of bovine sperm cells.

article

Measurement of the electron structure function F2e at LEP energies

J. Abdallah, P. Abreu, W. Adam, P. Adzic, more

Physics Letters B > 2014 > 737 > C > 39-47

The hadronic part of the electron structure function F2e has been measured for the first time, using e+e− data collected by the DELPHI experiment at LEP, at centre-of-mass energies of s=91.2–209.5 GeV. The data analysis is simpler than that of the measurement of the photon structure function. The electron structure function F2e data are compared to predictions of phenomenological models based on the...

article

Magic angle Lee–Goldburg frequency offset irradiation improves the efficiency and selectivity of SPECIFIC-CP in triple-resonance MAS solid-state NMR

Chin H. Wu, Anna A. De Angelis, Stanley J. Opella

Journal of Magnetic Resonance > 2014 > 246 > Complete > 1-3

The efficiency and selectivity of SPECIFIC-CP, a widely used method for selective double cross-polarization in triple-resonance magic angle spinning solid-state NMR, is improved by performing the tangential-shaped ¹³ C irradiation at an offset frequency that meets the Lee–Goldburg condition (LG-SPECIFIC-CP). This is demonstrated on polycrystalline samples of uniformly ¹³ C, ¹⁵...

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INFONA - science communication portal

Search results for: A. De Angelis

Machine learning to predict major bleeding during anticoagulation for venous thromboembolism: possibilities and limitations

Hypomimia in Parkinson’s disease: an axial sign responsive to levodopa

Gamma-ray astrophysics

Studies on a silicon-photomultiplier-based camera for Imaging Atmospheric Cherenkov Telescopes

Performance of the MAGIC telescopes under moonlight

The e-ASTROGAM mission

Measuring the best linear approximation of Wiener systems using multilevel sequences

Interfacial Tryptophan Residues Govern Transmembrane Helix Dynamics

New and old roles of the peripheral and brain renin–angiotensin–aldosterone system (RAAS): Focus on cardiovascular and neurological diseases

Practical synthesis of ternary sequences for system identification

Differences in attitudes towards mental illness and psychiatry among medical students, before and after the academic course of psychiatry

Attitudes toward psychiatry and psychiatric patients in medical students: Can real-world experiences reduce stigma?

Mental health and empathy: Do nursing students have better attitudes to psychiatric patients?

Different attitudes toward psychiatry and psychiatric patients in nursing students: Can personal experiences reduce stigma?

Raman spectroscopy and digital holography reveal visible light photodamage on human sperm cells

The major upgrade of the MAGIC telescopes, Part II: A performance study using observations of the Crab Nebula

P.4.b.005 Changes in high frequency oscillations (HFOs) in anxiety disorders: a pilot study

A combined holographic and Raman microscopy approach for the assessment of spermatozoa

Measurement of the electron structure function F2e at LEP energies

Magic angle Lee–Goldburg frequency offset irradiation improves the efficiency and selectivity of SPECIFIC-CP in triple-resonance MAS solid-state NMR

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