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Bulunan: 34 Adet 0.001 sn
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Filtreler
Filtreler
Bulunan: 34 Adet 0.001 sn
Yayın Tarihi : 2014 ✕Yayın Dili : eng ✕
Koleksiyon [11]
İlgili Araştırmacılar [10]
Ambargo Durumu [1]
Tam Metin [2]
Yayın Türü [1]
Yazar/lar [20]
Atıf Dizini [3]
Konu Başlıkları [20]
Yayıncı [10]
Yayın Tarihi [1]
Yayın Dili [1]
Erişime Açık

Suppression of Υ (1S) at forward rapidity in Pb–Pb collisions at √sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

We report on the measurement of the inclusive Υ (1S) production in Pb–Pb collisions at √sNN = 2.76 TeV carried out at forward rapidity (2.5 < y < 4) and down to zero transverse momentum using its μ+μ− decay channel with the ALICE detector at the Large Hadron Collider. A strong suppression of the inclusive Υ(1S) yield is observed with respect to pp collisions scaled by the number of independent nucleon– nucleon collisions. The nuclear modification factor, for events in the 0–90% centrality range, amounts to 0.30 ± 0.05(stat) ± 0.04(syst). The observed Υ (1S) suppression tends to increase with t ...Daha fazlası

Makale 2014 7 Görüntülenme
Erişime Açık

Multiplicity dependence of jet-like two-particle correlation structures in p–Pb collisions at √sNN = 5.02 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Two-particle angular correlations between unidentified charged trigger and associated particles are measured by the ALICE detector in p–Pb collisions at a nucleon–nucleon centre-of-mass energy of 5.02 TeV. The transverse-momentum range 0.7 < pT,assoc < pT,trig < 5.0 GeV/c is examined, to include correlations induced by jets originating from low momentum-transfer scatterings (minijets). The correlations expressed as associated yield per trigger particle are obtained in the pseudorapidity range |η| < 0.9. The near-side long-range pseudorapidity correlations observed in high-multiplicity p–Pb col ...Daha fazlası

Makale 2014 7 Görüntülenme
Erişime Açık

Functional Mobility On Discharge Day After Total Knee and Hip Replacement Surgery

KINIKLI, Gizem İrem | GÜNEY, Hande | KARAMAN, Ayşenur | YILMAZ, Kamil | ÇAĞLAR, Ömür | YÜKSEL, İnci

Purpose: To examine functional mobility status on discharge day after total knee and hip replacement surgery in post-acute care hospital setting. Methods: Eighty patients following total knee and hip replacement surgery were assessed with the de Morton Mobility Index (DEMMI), the Timed-Up-and-Go (TUG) and Five Times Sit to Stand Test, the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC) measurements of mobility-related activity on discharge day. Demographic information comprised age, body mass index, gender, type of surgery,length of hospital stay. Since the normality of ...Daha fazlası

Makale 2014 TURKISH JOURNAL OF PHYSIOTHERAPY AND REHABILITATION 5 Görüntülenme
Erişime Açık

Multiparticle azimuthal correlations in p-Pb and Pb-Pb collisions at the CERN Large Hadron Collider

KARASU UYSAL, Ayben | ALICE Collaboration

Measurements of multiparticle azimuthal correlations (cumulants) for charged particles in p-Pb at √sNN = 5.02 TeV and Pb-Pb at √sNN = 2.76 TeV collisions are presented. They help address the question of whether there is evidence for global, flowlike, azimuthal correlations in the p-Pb system. Comparisons are made to measurements from the larger Pb-Pb system, where such evidence is established. In particular, the second harmonic two-particle cumulants are found to decrease with multiplicity, characteristic of a dominance of few-particle correlations in p-Pb collisions. However, when a |η| gap i ...Daha fazlası

Makale 2014 3 Görüntülenme
Erişime Açık

A Review on Formation and Decay Kinetics of Trihalomethanes in Water of Different Qualities

AL-OMARI, Abbas | MUHAMMETOĞLU, Ayşe | KARADİREK, Ethem | JIRIES, Anwar | BATARSEH, Mufeed | TOPKAYA, Bülent | SOYUPAK, Selçuk

Despite the many disadvantages associated with the use of chlorine for disinfecting drinking water, chlorination is still the main method used for this purpose worldwide. Low chlorine concentrations in water distribution systems increase health risks whereas high chlorine concentrations are associated with the formation of disinfection by-products such as trihalomethanes which are suspected carcinogens. Due to their negative health impacts, trihalomethanes occurrence in finished drinking water has received great attention from researchers and scientists worldwide. This manuscript critically re ...Daha fazlası

Makale 2014 Wiley-VCH Verlag 2 Görüntülenme
Erişime Açık

Suppression of ψ(2S) production in p-Pb collisions at √sNN = 5.02 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The ALICE Collaboration has studied the inclusive production of the char- monium state ψ(2S) in proton-lead (p-Pb) collisions at the nucleon-nucleon centre of mass energy √sNN = 5.02 TeV at the CERN LHC. The measurement was performed at forward (2.03 < ycms < 3.53) and backward (−4.46 < ycms < −2.96) centre of mass rapidities, studying the decays into muon pairs. In this paper, we present the inclusive production cross sections σψ(2S), both integrated and as a function of the transverse momentum pT, for the two ycms domains. The results are compared to those obtained for the 1S vector state (J ...Daha fazlası

Makale 2014 3 Görüntülenme
Erişime Açık

Exclusive J/ψ photoproduction off protons in ultra-peripheral p-Pb collisions at sNN−−−√=5.02 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

We present the first measurement at the LHC of exclusive J=ψ photoproduction off protons, in pffiffiffiffiffiffiffi ultraperipheral proton-lead collisions at sNN 1⁄4 5.02 TeV. Events are selected with a dimuon pair produced either in the rapidity interval, in the laboratory frame, 2.5 < y < 4 (p-Pb) or −3.6 < y < −2.6 (Pb-p), and no other particles observed in the ALICE acceptance. The measured cross sections σðγ þ p → J=ψ þ pÞ are 33.2 2.2ðstatÞ 3.2ðsystÞ 0.7ðtheorÞ nb in p-Pb and 284 36ðstatÞþ27ðsystÞ −32 26ðtheorÞ nb in Pb-p collisions. We measure this process up to about 700 GeV in the γp ...Daha fazlası

Makale 2014 5 Görüntülenme
Erişime Açık

Grain Refinement, Modification, Degassing and Melt Quality Relationship in Al-7Si-0.3Mg

ÇETİN, Remzi | ULUDAĞ, Muhammet | DIŞPINAR, Derya

In this work, Al-7Si-0.3Mg alloy was studied. The alloy conditions was selected to be as-received, AlB3 grain refined and Sr modified. For each parameter, castings were made before and after degassing. In order to quantify the melt quality, reduced pressure test was used and bifilm index measurements were made. All the cast parts were subjected to metallographical examination, and thus, porosity measurements, distribution, area fraction were compared for each of the casting conditions.

Makale 2014 5 Görüntülenme
Erişime Açık

Azimuthal anisotropy of D-meson production in Pb-Pb collisions at √sN N = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The production of the prompt charmed mesons D0, D+, and D∗+ relative to the reaction plane was measured in Pb-Pbcollisionsatacenter-of-massenergypernucleon-nucleoncollisionof√sNN =2.76TeVwiththeALICE detector at the CERN Large Hadron Collider. D mesons were reconstructed via their hadronic decays at central rapidity in the transverse-momentum (pT ) interval 2–16 GeV/c. The azimuthal anisotropy is quantified in terms of the second coefficient v2 in a Fourier expansion of the D-meson azimuthal distribution and in terms of the nuclear modification factor RAA, measured in the direction of the reac ...Daha fazlası

Makale 2014 3 Görüntülenme
Erişime Açık

Freeze-out radii extracted from three-pion cumulants in pp, p–Pb and Pb–Pb collisions at the LHC

KARASU UYSAL, Ayben | ALICE Collaboration

In high-energy collisions, the spatio-temporal size of the particle production region can be measured using the Bose–Einstein correlations of identical bosons at low relative momentum. The source radii are typically extracted using two-pion correlations, and characterize the system at the last stage of interaction, called kinetic freeze-out. In low-multiplicity collisions, unlike in high-multiplicity collisions, two-pion correlations are substantially altered by background correlations, e.g. mini-jets. Such correlations can be suppressed using three-pion cumulant correlations. We present the f ...Daha fazlası

Makale 2014 3 Görüntülenme
Erişime Açık

A Novel Underlay Cognitive Radio Based on Direct Sequence Complementary Coded CDMA

KIZILIRMAK, Refik Çağlar

In this study, we propose a spectrum sharing scheme where secondary-users (SUs) can co-exist at the same frequency band with the primary-users simultaneously. Both primary (PN) and secondary networks (SN) are considered as CDMA based networks with the same set of orthogonal complementary codes. An orthogonal complementary code set possesses both ideal auto-correlation function (ACF) of any code and ideal cross-correlation function for any two codes in the same set. In the proposed scheme, a delay is applied to the transmission of the SN which exploits ideal ACF properties of complementary code ...Daha fazlası

Makale 2014 SPRINGER 1 Görüntülenme
Erişime Açık

Upgrade of the ALICE Experiment Letter Of Intent

KARASU UYSAL, Ayben | ALICE Collaboration

ALICE (A Large Ion Collider Experiment) is studying the physics of strongly interacting matter, and in particular the properties of the Quark–Gluon Plasma (QGP), using proton–proton, proton–nucleus and nucleus–nucleus collisions at the CERN LHC (Large Hadron Collider). The ALICE Collaboration is preparing a major upgrade of the experimental apparatus, planned for installation in the second long LHC shutdown in the years 2018–2019. These plans are presented in the ALICE Upgrade Letter of Intent, submitted to the LHCC (LHC experiments Committee) in September 2012. In order to fully exploit the p ...Daha fazlası

Makale 2014 IOP PUBLISHING LTD 6 Görüntülenme
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