2,889 research outputs found
The Message Reporting System of the ATLAS DAQ System
The Message Reporting System (MRS) in the ATLAS data acquisition system (DAQ) is one package of the Online Software which acts as a glue of various elements of DAQ, High Level Trigger (HLT) and Detector Control System (DCS). The aim of the MRS is to provide a facility which allows all software components in ATLAS to report messages to other components of the distributed DAQ system. The processes requiring a MRS are on one hand applications that report error conditions or information and on the other hand message processors that receive reported messages. A message reporting application can inject one or more messages into the MRS at any time. An application wishing to receive messages can subscribe to a message group according to defined criteria. The application receives messages that fulfill the subscription criteria when they are reported to MRS. The receiver message processing can consist of anything from simply logging the messages in a file/terminal to performing message analysis. The inter-process communication is achieved using the CORBA technology. The design, architecture and the used technology of MRS are reviewed in this paper
Spatial distribution of land type in regression models of pollutant loading
This paper proposes a method to improve landscape-pollution interaction regression models through the inclusion of a variable that describes the spatial distribution of a land type with respect to the pattern of runoff within a drainage catchment. The proposed index is used as an independent variable to enhance the strength, as quantified by R² values, of regression relationships between empirical observations of in-stream pollutant concentrations and land type by considering the spatial distribution of key land-type categories within the sample point’s drainage area. We present an index that adds a new dimension of explanatory power when used in conjunction with a variable describing the proportion of the land type. We demonstrate the usefulness of this index by exploring the relationship between nitrate ( - 3 NO ) and land type within 40 drainage sub-catchments in the Ipswich River watershed, Massachusetts. Nutrient loads associated with non-point source pollution paths are related to land type within the up-stream drainage catchments of sample sites. Past studies have focused on the quantity of particular land type within a sample point’s drainage catchment. Quantifying the spatial distribution of key land-type categories in terms of location on a runoff surface can improve our understanding of the relationship between sampled - 3 NO concentrations and land type. Regressions that employ the proportion of residential and agricultural land type within catchments provide a fair fit (R² = 0.67). However, we find that a regression adding a variable that indicates the spatial distribution of residential land improves the overall relationship between instream - 3 NO measurements and associated land types (R² = 0.712). We test the sensitivity of the results with respect to variations in the surface definition in order to determine the conditions under which the spatial index variable is useful
The content of riboflavin and its coenzymes forms in the brain of rats of different ages
Fedorko N. L., Petrov S. S., Nikolaienko K. V. The content of riboflavin and its coenzymes forms in the brain of rats of different ages. Journal of Education, Health and Sport. 2017;7(7):800-812. eISSN 2391-8306. DOI http://dx.doi.org/10.5281/zenodo.844093
http://ojs.ukw.edu.pl/index.php/johs/article/view/4707
The journal has had 7 points in Ministry of Science and Higher Education parametric evaluation. Part B item 1223 (26.01.2017).
1223 Journal of Education, Health and Sport eISSN 2391-8306 7
© The Authors 2017;
This article is published with open access at Licensee Open Journal Systems of Kazimierz Wielki University in Bydgoszcz, Poland
Open Access. This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium,
provided the original author(s) and source are credited. This is an open access article licensed under the terms of the Creative Commons Attribution Non Commercial License
(http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted, non commercial use, distribution and reproduction in any medium, provided the work is properly cited.
This is an open access article licensed under the terms of the Creative Commons Attribution Non Commercial License (http://creativecommons.org/licenses/by-nc/4.0/) which permits unrestricted, non commercial
use, distribution and reproduction in any medium, provided the work is properly cited.
The authors declare that there is no conflict of interests regarding the publication of this paper.
Received: 01.07.2017. Revised: 02.07.2017. Accepted: 31.07.2017.
THE CONTENT OF RIBOFLAVIN AND ITS COENZYMES FORMS IN THE BRAIN OF RATS OF DIFFERENT AGES
N. L. Fedorko, S. S. Petrov, K. V. Nikolaienko
Odessa I. I. Mechnikov National University
Pro.Shampansky, 2, Odessa, Ukraine
E-mail: [email protected]
Abstract
The content of total riboflavin and its coenzymes (FAD and FMN) in the brain homogenates of rats of different ages by means of fluorimetric ion exchange chromatography was determined. The experiment included 3 age groups of rats: 3 months, 10-12 months, and the old 22-24 months.
The dependence of the content of riboflavin and its coenzymes in the cortex, brain stem, cerebellum and large hemispheres from the age of experimental rats was established. The decrease in the content of riboflavin coenzymes in the brain of adult rats and their partial increase in the elderly rats confirms the presence of riboflavin hypovitaminosis, mitochondrial dysmutation and free radical oxidation in the process of aging, and also facilitates the mobilization of adaptive mechanisms aimed at increasing the life span and preserving adaptation to the environment in old animals.
Key words: riboflavin, flavinadenin dinucleotide (FAD), flavin mononucleotide (FMN), rat, aging, brain, trunk, bark, large hemisphere, cerebellum
The Machine Learning Landscape of Top Taggers
Based on the established task of identifying boosted, hadronically decaying
top quarks, we compare a wide range of modern machine learning approaches.
Unlike most established methods they rely on low-level input, for instance
calorimeter output. While their network architectures are vastly different,
their performance is comparatively similar. In general, we find that these new
approaches are extremely powerful and great fun.Comment: Yet another tagger included
Design and construction of new central and forward muon counters for CDF II
New scintillation counters have been designed and constructed for the CDF
upgrade in order to complete the muon coverage of the central CDF detector, and
to extend this coverage to larger pseudorapidity. A novel light collection
technique using wavelength shifting fibers, together with high quality
polystyrene-based scintillator resulted in compact counters with good and
stable light collection efficiency over lengths extending up to 320 cm. Their
design and construction is described and results of their initial performance
are reported.Comment: 20 pages, 15 figure
Fatty acid composition of tissue lipsds goslings and goose embryons
The changes in the fatty acid composition of the lipid in the brain tissues and geese liver and their
embryos from 22-th embryonic day until 14-th day of postnatal period have been investigated. The fatty acid
composition of tissues was quantified by methods of gas-liquid chromatography. The index of fatty acids
unsaturation was calculated as equivalent concentration of unsaturated fatty acids relative to double bonds.
Experience has shown that in the brain of geese high content of unsaturated fatty acids and level of their
unsaturation occurs in 22-day-old embryos. From the 22nd to 28th day of embryogenesis the total content of
unsaturated fatty acids in the brain tissues of embryos has decreased by 37.3 %, and the level of
unsaturation of fatty acids — by 44.4 %. The transition to postnatal development (from the 28th day of
embryogenesis to 1 st day of postnatal period) was characterized by a stable content of unsaturated fatty
acids in the brain. However, the degree of unsaturation of fatty acids has decreased by 8.0 %. The content of
unsaturated fatty acids in the liver of 22-days embryos compared with the brain tissues was higher by
13.9 %, while the level of unsaturation fatty acids in the liver, as compared with the brain was lower by
17.8 %. From the 22nd day of embryogenesis to the 1st day of postnatal development gradual increase in the
content of unsaturated fatty acids in the liver was traced, while the level of their unsaturation in this period
remained unchanged.
A high content of unsaturated fatty acids was found in the liver of 1 day-old goslings, which is
15.8 % higher than the corresponding figure 22 day-old embryos. The first week of postnatal development
was characterized by decrease in the content of unsaturated fatty acids in the liver by 25.0 %, and their level
of unsaturation — by 21.62 %. The study results showed that one of the mechanisms of prooxidant-
antioxidant balance support within the transition from of embryogenesis to postnatal development is to
reduce the unsaturation of lipid fatty acids. This mechanism is realized in the brain of geese from hatching
eggs of different quality. The support prooxidant-antioxidant balance in the liver by means of reducing the
unsaturation of fatty acids is less effective and is mostly defined by fatty acid composition of lipids of geese
hatching eggs
Measurement of the Helicity Fractions of W Bosons from Top Quark Decays Using Fully Reconstructed top-antitop Events with CDF II
We present a measurement of the fractions F_0 and F_+ of longitudinally
polarized and right-handed W bosons in top quark decays using data collected
with the CDF II detector. The data set used in the analysis corresponds to an
integrated luminosity of approximately 318 pb -1. We select ttbar candidate
events with one lepton, at least four jets, and missing transverse energy. Our
helicity measurement uses the decay angle theta*, which is defined as the angle
between the momentum of the charged lepton in the W boson rest frame and the W
momentum in the top quark rest frame. The cos(theta*) distribution in the data
is determined by full kinematic reconstruction of the ttbar candidates. We find
F_0 = 0.85 +0.15 -0.22 (stat) +- 0.06 (syst) and F_+ = 0.05 +0.11 -0.05 (stat)
+- 0.03 (syst), which is consistent with the standard model prediction. We set
an upper limit on the fraction of right-handed W bosons of F_+ < 0.26 at the
95% confidence level.Comment: 11 pages, 2 figures, submitted to Phys. Rev.
Measurement of the ttbar Production Cross Section in ppbar Collisions at sqrt(s) = 1.96 TeV
We present a measurement of the top quark pair production cross section in
ppbar collisions at sqrt(s)=1.96 TeV using 318 pb^{-1} of data collected with
the Collider Detector at Fermilab. We select ttbar decays into the final states
e nu + jets and mu nu + jets, in which at least one b quark from the t-quark
decays is identified using a secondary vertex-finding algorithm. Assuming a top
quark mass of 178 GeV/c^2, we measure a cross section of 8.7 +-0.9 (stat)
+1.1-0.9 (syst) pb. We also report the first observation of ttbar with
significance greater than 5 sigma in the subsample in which both b quarks are
identified, corresponding to a cross section of 10.1 +1.6-1.4(stat)+2.0-1.3
(syst) pb.Comment: Accepted for publication in Physics Review Letters, 7 page
Top quark mass measurement using the template method at CDF
We present a measurement of the top quark mass in the lepton+jets and
dilepton channels of decays using the template method. The data
sample corresponds to an integrated luminosity of 5.6 fb of
collisions at Tevatron with TeV, collected with the CDF II
detector. The measurement is performed by constructing templates of three
kinematic variables in the lepton+jets and two kinematic variables in the
dilepton channel. The variables are two reconstructed top quark masses from
different jets-to-quarks combinations and the invariant mass of two jets from
the decay in the lepton+jets channel, and a reconstructed top quark mass
and , a variable related to the transverse mass in events with two
missing particles, in the dilepton channel. The simultaneous fit of the
templates from signal and background events in the lepton+jets and dilepton
channels to the data yields a measured top quark mass of Comment: submitted to Phys. Rev.
Evidence for the exclusive decay Bc+- to J/psi pi+- and measurement of the mass of the Bc meson
We report first evidence for a fully reconstructed decay mode of the
B_c^{\pm} meson in the channel B_c^{\pm} \to J/psi \pi^{\pm}, with J/psi \to
mu^+mu^-. The analysis is based on an integrated luminosity of 360 pb$^{-1} in
p\bar{p} collisions at 1.96 TeV center of mass energy collected by the Collider
Detector at Fermilab. We observe 14.6 \pm 4.6 signal events with a background
of 7.1 \pm 0.9 events, and a fit to the J/psi pi^{\pm} mass spectrum yields a
B_c^{\pm} mass of 6285.7 \pm 5.3(stat) \pm 1.2(syst) MeV/c^2. The probability
of a peak of this magnitude occurring by random fluctuation in the search
region is estimated as 0.012%.Comment: 7 pages, 3 figures. Version 3, accepted by PR
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