12 research outputs found
Search for the Neutrino Magnetic Moment in the Non-Equilibrium Reactor Antineutrino Energy Spectrum
We study the time evolution of the typical nuclear reactor antineutrino
energy spectrum during reactor ON period and the decay of the residual
antineutrino spectrum after reactor is stopped. We find that relevant
variations of the soft recoil electron spectra produced via weak and magnetic
scattering process can play a signigicant role in
the current and planned searches for the neutrino magnetic moment at reactors.Comment: 4 pages LaTeX 2.09. 4 PS figures. Resume of seminar talks given at
Kurchatov Institute, March 1999
An evaluation of waste management for energy recovery for the Kingdom of Bahrain
An evaluation of waste management for energy recovery for the Kingdom of Bahrai
Electromagnetic properties of neutrinos
A short review on electromagnetic properties of neutrinos is presented. In
spite of many efforts in the theoretical and experimental studies of neutrino
electromagnetic properties, they still remain one of the main puzzles related
to neutrinos.Comment: The talk presented by A.Studenikin at the International Conference on
Topics in Astroparticle and Underground Physics, Rome (Italy), July 1-5, 200
Interpretation of heart rate variability via detrended fluctuation analysis and alpha-beta filter
Detrended fluctuation analysis (DFA), suitable for the analysis of
nonstationary time series, has confirmed the existence of persistent long-range
correlations in healthy heart rate variability data. In this paper, we present
the incorporation of the alpha-beta filter to DFA to determine patterns in the
power-law behaviour that can be found in these correlations. Well-known
simulated scenarios and real data involving normal and pathological
circumstances were used to evaluate this process. The results presented here
suggest the existence of evolving patterns, not always following a uniform
power-law behaviour, that cannot be described by scaling exponents estimated
using a linear procedure over two predefined ranges. Instead, the power law is
observed to have a continuous variation with segment length. We also show that
the study of these patterns, avoiding initial assumptions about the nature of
the data, may confer advantages to DFA by revealing more clearly abnormal
physiological conditions detected in congestive heart failure patients related
to the existence of dominant characteristic scales.Comment: 18 pages, 14 figure
A liquid xenon ionization chamber in an all-fluoropolymer vessel
A novel technique has been developed to build vessels for liquid xenon
ionization detectors entirely out of ultra-clean fluoropolymer. We describe the
advantages in terms of low radioactivity contamination, provide some details of
the construction techniques, and show the energy resolution achieved with a
prototype all-fluoropolymer ionization detector.Comment: 12 pages, 9 figure
Precision Medicine and Actionable Alterations in Lung Cancer: A Single Institution Experience
OBJECTIVES: Oncology has become more reliant on new testing methods and a greater use of electronic medical records, which provide a plethora of information available to physicians and researchers. However, to take advantage of vital clinical and research data for precision medicine, we must initially make an effort to create an infrastructure for the collection, storage, and utilization of this information with uniquely designed disease-specific registries that could support the collection of a large number of patients.
MATERIALS AND METHODS: In this study, we perform an in-depth analysis of a series of lung adenocarcinoma patients (n = 415) with genomic and clinical data in a recently created thoracic patient registry.
RESULTS: Of the 415 patients with lung adenocarcinoma, 59% (n = 245) were female; the median age was 64 (range, 22-92) years with a median OS of 33.29 months (95% CI, 29.77-39.48). The most common actionable alterations were identified in EGFR (n = 177/415 [42.7%]), ALK (n = 28/377 [7.4%]), and BRAF V600E (n = 7/288 [2.4%]). There was also a discernible difference in survival for 222 patients, who had an actionable alteration, with a median OS of 39.8 months as compared to 193 wild-type patients with a median OS of 26.0 months (P
CONCLUSION: The use of patient registries, focused genomic panels and the appropriate use of clinical guidelines in community and academic settings may influence cohort selection for clinical trials and improve survival outcomes
Cosmic muon flux at shallow depths underground
We consider the cosmic muon background for the installations located at
shallow depths. We suggest a relatively simple formula for the sea-level muon
spectrum, which allows calculate dependencies of the vertical muon intensity
and integral muon flux density on overburden. Muon flux dependency on the
zenith angle at overburden of 10 to 100 meters of standard rock shows that muon
angular distribution practically does not change in this interval. We present
muon angular distributions for three typical apparatus locations in
measurements on the surface and at shallow depths. It is shown that for such
installations the active shielding "umbrella" should overlap a zenith angle of
\theta ~ 80^o to remove the cosmic muon background.Comment: 9 pages, 6 figures, submitted to Phys.Atom.Nuc
Tracking algorithms with variable update time for phased array radar
SIGLEAvailable from British Library Document Supply Centre- DSC:DX183251 / BLDSC - British Library Document Supply CentreGBUnited Kingdo
The role of substrate purity and its crystallographic orientation in the defect density of chemical vapor deposition grown monolayer graphene
Defect free mono-layer graphene sheet growth has remained a challenge towards its huge potential applications in electronic and photonic devices. Here, we are reporting about the role of the copper substrate purity and its crystallographic orientation in the quality of the graphene grown using a low pressure chemical vapor deposition technique. Graphene is grown on three different (Cu-I, Cu-II and Cu-III) substrates of different purity under analogous conditions of optimized pre-growth annealing and cleaning processes. Irrespective of the purity level of all the substrates, it is demonstrated that monolayer graphene (I-G'/I-G similar to 4) with different defect density is observed. The amount of defects and the defect density in the three samples is correlated with the different lattice planes of Cu, which are participating during the growth process. The size of the lattice grain advance upon annealing is observed and it is substrate purity dependent. This reveals that graphene growth is favored by either the (111) or the (100) plane or both. It is demonstrated that the substrate purity is extremely accountable for the growth of defect free monolayer graphene for device applications which require ballistic transport properties