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Bulunan: 54 Adet 0.001 sn
Yayın Tarihi : 2016 ✕Koleksiyon : Mühendislik ve Doğa ... ✕
Koleksiyon [8]
İlgili Araştırmacılar [15]
Ambargo Durumu [1]
Tam Metin [1]
Yayın Türü [3]
Yazar/lar [19]
Atıf Dizini [3]
Konu Başlıkları [20]
Yayıncı [9]
Tez Danışmanı [2]
Yayın Tarihi [1]
Yayın Dili [3]
Erişime Açık

Çimento İle Stabilizasyonda Optimum Çimento Oranının Belirlenmesi

URAY, Esra | SANCIOĞLU, Sadrettin | ÇUBUKÇU, Esra Aslı | ERDEM, Mehmet Doğukan

Bu çalışmada, farklı çimento ve su oranlarının çimento stabilize zemin dayanımına etkisi deneysel olarak araştırılmıştır. Zayıf zeminin iyileştirilmesi ve belirli zemin özelliklerini sağlaması karayolu uygulamalarında önemli bir konudur. Yol yapımında kullanılan çimento bağlayıcılı granüler temel tabakası çakıl ve ya kırmataş dolgu malzemesi kullanılarak elde edilmektedir. Yol maliyeti ve hizmet ömrü açısından yol altı temel tabakası gerekli dayanımı sağlamalı ve oturmalara karşı dayanıklı olmalıdır. Çimento stabilizasyonunda, taneler arası boşluklar doldurulur ve zeminin mukavemeti arttırılır ...Daha fazlası

Konferans Bildirisi 2016 1. Ulusal Genç Geoteknik Mühendisleri Sempozyumu 3 Görüntülenme
Erişime Açık

D-meson production in p-Pb collisions at √sNN = 5.02 TeV and in pp collisions at √s = 7 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

In the context of the investigation of the quark gluon plasma produced in heavy-ion collisions, hadrons containing heavy (charm or beauty) quarks play a special role for the characterization of the hot and dense medium created in the interaction. The measurement of the production of charm and beauty hadrons in proton– proton collisions, besides providing the necessary reference for the studies in heavy-ion reactions, constitutes an important test of perturbative quantum chromodynamics (pQCD) calculations. Heavy-flavor production in proton–nucleus collisions is sensitive to the various effects ...Daha fazlası

Makale 2016 6 Görüntülenme
Erişime Açık

Elliptic flow of electrons from heavy-flavour hadron decays at mid-rapidity in Pb–Pb collisions at √sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The elliptic flow of electrons from heavy-flavour hadron decays at mid-rapidity (|y| < 0.7) is measured in Pb–Pb collisions at √sNN = 2.76 TeV with ALICE at the LHC. The particle azimuthal distribution with respect to the reaction plane can be parametrized with a Fourier expansion, where the second coefficient (v2) represents the elliptic flow. The v2 coefficient of inclusive electrons is measured in three centrality classes (0–10%, 10–20% and 20–40%) with the event plane and the scalar product methods in the transverse momentum (pT) intervals 0.5–13GeV/c and 0.5–8GeV/c, respectively. After su ...Daha fazlası

Diğer 2016 3 Görüntülenme
Erişime Açık

Search for weakly decaying

KARASU UYSAL, Ayben | ALICE Collaboration

We present results of a search for two hypothetical strange dibaryon states, i.e. the H-dibaryon and the possible !n bound state. The search is performed with the ALICE detector in central (0–10%) Pb– Pb collisions at √sNN = 2.76 TeV, by invariant mass analysis in the decay modes !n → dπ+ and Hdibaryon → !pπ−. No evidence for these bound states is observed. Upper limits are determined at 99% confidence level for a wide range of lifetimes and for the full range of branching ratios. The results are compared to thermal, coalescence and hybrid UrQMD model expectations, which describe correctly the ...Daha fazlası

Makale 2016 1 Görüntülenme
Erişime Açık

Elliptic flow of muons from heavy-flavour hadron decays at forward rapidity in Pb–Pb collisions at √sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The elliptic flow, v2, of muons from heavy-flavour hadron decays at forward rapidity (2.5 < y < 4) is measured in Pb–Pb collisions at √sNN = 2.76 TeV with the ALICE detector at the LHC. The scalar product, two- and four-particle Q cumulants and Lee–Yang zeros methods are used. The dependence of the v2 of muons from heavy-flavour hadron decays on the collision centrality, in the range 0–40%, and on transverse momentum, pT, is studied in the interval 3 < pT < 10 GeV/c. A positive v2 is observed with the scalar product and two-particle Q cumulants in semi-central collisions (10–20% and 20–40% cen ...Daha fazlası

Makale 2016 3 Görüntülenme
Erişime Açık

Fuzzy Logic Control System with Helicopter Takeoff and Landing

ALLAHVERDİ, Novruz | HACIMURTAZAOĞLU, Murat

In this study, fuzzy expert system is designed for the provision of helicopter takeoffs and landings by fuzzy logic. For this purpose, a model helicopter and the test platform have been created that helicopter movements can be tested. The vertical motion control on the axis defined by the fuzzy logic control system is provided for the helicopter with the generated test platform with four degrees of freedom. Fuzzy logic controller was designed with Arduino 2560 control board and Visual Studio 2010 C Sharp program for controlling helicopter model and analysis of motion control was made. Real-tim ...Daha fazlası

Konferans Bildirisi 2016 6 Görüntülenme
Erişime Açık

Centrality dependence of pion freeze-out radii in Pb-Pb collisions at √sNN = 2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

We report on the measurement of freeze-out radii for pairs of identical-charge pions measured in Pb-Pb collisions at √sNN = 2.76 TeV as a function of collision centrality and the average transverse momentum of the pair kT. Three-dimensional sizes of the system (femtoscopic radii), as well as direction-averaged one- dimensional radii are extracted. The radii decrease with kT, following a power-law behavior. This is qualitatively consistent with expectations from a collectively expanding system, produced in hydrodynamic calculations. The radii also scale linearly with ⟨dNch/dη⟩1/3. This behavior ...Daha fazlası

Makale 2016 7 Görüntülenme
Erişime Açık

Gabion Tipi Dayanma Duvarlarının Harmoni Arama Algoritması İle Optimizasyonu

URAY, Esra | ÇARBAŞ, Serdar | ERHAN, İbrahimHakkı | TAN, Özcan

Bu çalışmada, gabion dayanma duvarın optimum tasarımı harmoni arama algoritması kullanılarak yapılmıştır. Harmoni arama algoritması müzik icrasında en iyi harmoniyi bulma prensibine dayanan sezgisel optimizasyon yöntemidir. Gabion dayanma duvarı, standart boyutlarda üretilen gabion sepetlerle inşa edilir. Duvar tasarımında gabion sepet boyutlarının standart yerine değişken olarak alınması ile stabilite koşullarını sağlayan daha ekonomik dayanma duvarı elde etmek mümkündür. Bu çalışmanın matematik modelinde, dayanma duvar temel genişliği, sepet genişliği azaltma mesafesi ve gabion sıra sayısı t ...Daha fazlası

Konferans Bildirisi 2016 Zemin Mekaniği ve Geoteknik Mühendisliği 16. Ulusal Kongresi 7 Görüntülenme
Erişime Açık

Transverse momentum dependence of D-meson production in Pb-Pb collisions at √sNN=2.76 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Abstract: The production of prompt charmed mesons D0, D+ and D∗+, and their an- tiparticles, was measured with the ALICE detector in Pb-Pb collisions at the centre-of-mass energy per nucleon pair, √sNN, of 2.76TeV. The production yields for rapidity |y| < 0.5 are presented as a function of transverse momentum, pT, in the interval 1–36GeV/c for the centrality class 0–10% and in the interval 1–16 GeV/c for the centrality class 30–50%. The nuclear modification factor RAA was computed using a proton-proton reference at √√ s = 2.76 TeV, based on measurements at s = 7 TeV and on theoretical calculat ...Daha fazlası

Makale 2016 3 Görüntülenme
Erişime Açık

Centrality dependence of ψ(2S) suppression in p-Pb collisions at √sNN = 5.02 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

The inclusive production of the ψ(2S) charmonium state was studied as a function of centrality in p-Pb collisions at the nucleon-nucleon center of mass energy √sNN = 5.02 TeV at the CERN LHC. The measurement was performed with the ALICE detec- tor in the center of mass rapidity ranges −4.46 < ycms < −2.96 and 2.03 < ycms < 3.53, down to zero transverse momentum, by reconstructing the ψ(2S) decay to a muon pair. The ψ(2S) production cross section σψ(2S) is presented as a function of the collision cen- trality, which is estimated through the energy deposited in forward rapidity calorime- ters. T ...Daha fazlası

Makale 2016 2 Görüntülenme
Erişime Açık

Measurement of D-meson production versus multiplicity in p–Pb collisions at √sNN = 5.02 TeV

KARASU UYSAL, Ayben | ALICE Collaboration

Abstract: The measurement of prompt D-meson production as a function of multiplic- ity in p–Pb collisions at √sNN = 5.02TeV with the ALICE detector at the LHC is re- ported. D0, D+ and D∗+ mesons are reconstructed via their hadronic decay channels in the centre-of-mass rapidity range −0.96 < ycms < 0.04 and transverse momentum interval 1 < pT < 24 GeV/c. The multiplicity dependence of D-meson production is examined by either comparing yields in p–Pb collisions in different event classes, selected based on the multiplicity of produced particles or zero-degree energy, with those in pp collisions ...Daha fazlası

Diğer 2016 7 Görüntülenme
Erişime Açık

Bifilms And Hot Tearing Of Al-Si Alloys

ÇETİN, Remzi | ULUDAĞ, Muhammet | DIŞPINAR, Derya

Hot tearing is one of the most interesting defects that can be found during casting of aluminium alloys. The definition of this defects has some uncertainties such as “it does not always appear under apparently identical conditions” or “the defect is highly specific to certain alloys”. There are several works in the literature on the modelling and analytical approaches. However, the experimental findings have not been satisfactory. In this work, A356, A380 and A413 alloys were cast in two different moulds to investigate the hot tearing tendency with regard to the melt quality. It was found tha ...Daha fazlası

Konferans Bildirisi 2016 Shape Cutlng: 6th lntenudlmud Symposiam, Springer Link 6 Görüntülenme
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