نتایج جستجو برای: gamma discrimination

تعداد نتایج: 186928  

2003
N. Omodei

The Diffusion Entropy algorithm is a method that allows the study of correlated non-stationary time series and allows the discrimination between signal and uncorrelated noise. DE provides a quantitative measure of the complexity by means of a scaling index δ. The aim of this paper is to apply this method to study and statistically characterize Gamma-Ray Burst light curves and to introduce a met...

Journal: :The Korean journal of parasitology 2009
Byung-Suk Chung Jeong-Keun Lee Min-Ho Choi Myoung Hee Park Dongil Choi Sung-Tae Hong

This study examined the association of cytokine gene polymorphisms with intrahepatic bile duct wall fibrosis in human clonorchiasis. A total of 240 residents in Heilongjiang, China underwent ultrasonography, blood sampling, and stool examination. Single nucleotide polymorphism (SNP) sites for IFN-gamma (+874 T/A), IL-10 (-1,082 G/A, -819 C/T, -592 C/A), TNF-alpha (-308 G/A), and TGF-beta1 (codo...

Journal: :Physiology & behavior 2009
Michela Balconi Uberto Pozzoli

The study aimed to explore the modulation of frequency bands (delta, theta, alpha-1 and alpha-2, and gamma) in response to emotional face within different post-stimulus time intervals (50-450 ms). Twenty adults looked at emotional (happy, sad, angry, fearful) or neutral faces. EEG results showed that motivational significance of face can modulate frequency bands, specifically for theta and gamm...

Journal: :International journal of psychophysiology : official journal of the International Organization of Psychophysiology 2011
Jasna Martinovic Niko A Busch

Cortical oscillatory activity in the gamma-band range (>30Hz) is a fundamental mechanism of neural coding that arises during a range of cognitive processes in both animals and humans. Since the first report on high frequency oscillatory synchrony between V1 neurons belonging to the same orientation column (Gray and Singer, 1989, PNAS, 86, 1698-1702), the role of such oscillations in visual perc...

Journal: :Radiation Physics and Chemistry 2023

For the first time we report ability of CLLB scintillator to detect and discriminate fast neutrons (2-10 MeV energy range) from gamma-rays thermal neutrons, using a digital pulse shape discrimination technique. Firstly, conducted measurements in single mode with an Am-Be source, unshielded shielded, tagged new cluster events as neutron-induced zone. The Figure Merit obtained for neutron/gamma w...

Journal: :Journal of Instrumentation 2023

Abstract In the framework of development SWGO experiment, we have performed a detailed study single unit an extensive air shower observatory based on array water Cherenkov detectors. Indeed, one possible detector configurations for consists tanks, and to reach high detection efficiency discrimination capability between gamma-ray hadronic showers, different tank designs are under investigation. ...

Journal: :Physics of Atomic Nuclei 2021

The CALorimetric Electron Telescope CALET is collecting science data on the International Space Station since October 2015 with excellent and continuous performance. Energy measured a deep homogeneous calorimeter (1.2 nuclear interaction lengths, 27 radiation lengths) preceded by an imaging pre-shower (3 1mm granularity) providing tracking $$10^{-5}$$ electron/proton discrimination. Two indepen...

پایان نامه :دانشگاه تربیت معلم - تهران - دانشکده ادبیات و علوم انسانی 1389

شهرهایی که در دامنه های کوهستانی شکل گرفته اند به شدت تحت تاثیر محیط فعال پیرامون خود قرار گرفته و به وسیله مخاطرات ژیومورفولوژیکی موجود در آن مورد تهدید قرار می گیرند. شهر جوانرود به دلیل قرارگیری در پاپکوهای زاگرس چین خورده و نیز به دلیل گذر روخانه فصلی و دایمی سوریر در شرق و لیله در جنوب شهر دارای مخاطرات محیطی مختلف از جمله حرکات دامنه ای و سیل و طغیان رودخانه می باشد. در تحقق حاضر به منظور...

2011
H. J. KIM Wan Kim Sangjun KANG Kyeryung KIM Sangpil YUN

We report a fast neutron and gamma induced radiation dose and flux monitoring study during the nano-particle production at the proton beam irradiation facility. The monitoring results will be used for understanding of the activation of irradiated samples and the effect to the nano-particle production. A cylindrical shape of BC523A liquid scintillator was used for the fast neutron and gamma moni...

Journal: :The European journal of neuroscience 2003
Nadine Ravel Pascal Chabaud Claire Martin Valérie Gaveau Etienne Hugues Catherine Tallon-Baudry Olivier Bertrand Rémi Gervais

This study addressed the question of the possible functional relevance of two different oscillatory activities, beta and gamma (15-40 and 60-90 Hz, respectively) for perception and memory processes in olfactory areas of mammals. Local field potentials were recorded near relay olfactory bulb neurons while rats performed an olfactory discrimination task. Signals reflected the mass activity from t...

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