176 research outputs found

    Single Production of Fourth Family b' Quark at the Large Hadron electron Collider

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    We examined the single production of fourth family b' quarks at the Large Hadron electron Collider (LHeC).We have analyzed the background and the signal processes for the mass range 300-800 GeV. We find the discovery region for an optimal parametrization of the Vqb' matrix elements.Comment: 12 pages, 8 figures, 2 table

    Crafting symbolic geographies in modern Turkey

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    Place is a social site of meaning and memory. The critical appreciation of place and its link to power in toponymic studies involve the identity politics of place naming. This paper discusses the relationship between the naming of places and identity construction in Turkey. First, conceptualized as a hegemonic practice, the Turkification of toponyms in the Kurdish region of the country is argued to be part of a broader system of assimilation. Supported by the imposition of particular ethno- nationalist narratives on the past, and conducted with concomitant processes of linguistic and demographic design, top-down and centralized engineering of the country’s toponymic order has two sides; the construction of symbolic Turkish spaces and the cultural erosion of Kurdishness. Later, the research examines the act of naming places as a Kurdish strategy of resistance and a cultural right. As an attempt to remove spatial and linguistic injustice, Kurdish toponymic practices aim at re-asserting the ‘self’ and reclaiming memory, space and identity through the re-introduction of former place names or new alternatives that are conducive to the reparation of the Kurdish identity. The discursive and material struggle over space and the clash between the Turkish and Kurdish discourses on naming places reflect the overall structure of social and political power relations in Turkey

    Glueball Production in Peripheral Heavy-Ion Collisions

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    The method of equivalent quanta is applied both to photon-photon and, by analogy, to double pomeron exchange in heavy-ion collisions. This Weizs\"acker-Williams approach is used to calculate production cross sections for the glueball candidate fJ(1710)f_J(1710) meson via photon-photon and pomeron-pomeron fusion in peripheral heavy-ion collisions at both RHIC and LHC energies. The impact-parameter dependence for total and elastic cross sections are presented, and are compared to results for proton-proton collisions.Comment: 15 pages, 6 figure

    Erratum

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    Genetic characterization of grape (Vitis vinifera L.) germplasm from Southeast Anatolia by SSR markersVitis 50 (3), 99-106 (2011

    Genetic characterization of grape (Vitis vinifera L.) germplasm from Southeast Anatolia by SSR markers

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    Southeast Anatolia is located in close proximity to the center of origin of grapes and is an important grape producing area of Turkey. The important location of this region for grape genetic diversity together with its diverse ecological conditions may have led to the development of grape germplasm that is unique to this region. However, so far little has been done to genetically analyze this grape germplasm. In this study, we genetically analyzed 55 grape cultivars originating from six different provinces of this region using 14 simple sequence repeat (SSR) loci and a number of ampeolographic characteristics. Based on these analyses, one case of synonymous and four cases of homonymous grape cultivars were identified. The contribution of our results to better characterization of the grape germplasm of the region as well as future germplasm management and breeding efforts is discussed.

    Comments on glueballinos (R0 particles) and R0 searches

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    We propose a search strategy for the light R0 (glueballino) particle suggested by G.Farrar in connection with the light gluino scenario. The basic idea is to moderate and stop the R0 particles and then observe their decay to almost monochromatic pions - at an appropriate time delay relative to a primary collision event, where a gluino jet, likely to fragment into the R0, was produced. This technique is optimized at colliders and depends on qualitative features of the R0 hadronic interactions which we discuss in detail.Comment: LaTeX, 28 page

    Quality of life and COVID-19 phobia of cancer patients receiving chemotherapy in a state hospital during pandemic: a cross sectional study

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    Objective: COVID-19 pandemic has become a global public health problem and led to phobia among people. There is also no doubt that the COVID-19 pandemic had a great impact on the quality of people's lives. The goal of this study was to assess the factors that might be affecting the quality of life and COVID-19 phobia of the cancer patients receiving chemotherapy. Materials and Methods: This cross-sectional study was conducted between November 2021 and April 2022 in an outpatient chemotherapy unit within a state hospital in Istanbul. Participants' data was gathered by a questionnaire that had 3 components: participants' characteristics, the COVID-19 phobia scale, and the WHOQOL-BREF scale. Results: The results showed that perceived economic status, education level, having comorbidities, having a caregiver and whom the caregiver had an impact on the Quality of Life, and people who have an acquaintance who died due to COVID-19 had higher COVID-19 phobia total score. Furthermore, it was seen that as the age or COVID-19 phobia total score increased, each component of the Quality of Life score decreased. Conclusions: Quality of life and COVID-19 phobia of cancer patients were observed to be inversely proportional in chemotherapy receiving patients in a state hospital in Istanbul

    Asperities and barriers on the seismogenic zone in North Chile: state-of-the-art after the 2007 Mw 7.7 Tocopilla earthquake inferred by GPS and InSAR data

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    The Mw 7.7 2007 November 14 earthquake had an epicentre located close to the city of Tocopilla, at the southern end of a known seismic gap in North Chile. Through modelling of Global Positioning System (GPS) and radar interferometry (InSAR) data, we show that this event ruptured the deeper part of the seismogenic interface (30–50 km) and did not reach the surface. The earthquake initiated at the hypocentre and was arrested ~150 km south, beneath the Mejillones Peninsula, an area already identified as an important structural barrier between two segments of the Peru–Chile subduction zone. Our preferred models for the Tocopilla main shock show slip concentrated in two main asperities, consistent with previous inversions of seismological data. Slip appears to have propagated towards relatively shallow depths at its southern extremity, under the Mejillones Peninsula. Our analysis of post-seismic deformation suggests that small but still significant post-seismic slip occurred within the first 10 d after the main shock, and that it was mostly concentrated at the southern end of the rupture. The post-seismic deformation occurring in this period represents ~12–19 per cent of the coseismic deformation, of which ~30–55 per cent has been released aseismically. Post-seismic slip appears to concentrate within regions that exhibit low coseismic slip, suggesting that the afterslip distribution during the first month of the post-seismic interval complements the coseismic slip. The 2007 Tocopilla earthquake released only ~2.5 per cent of the moment deficit accumulated on the interface during the past 130 yr and may be regarded as a possible precursor of a larger subduction earthquake rupturing partially or completely the 500-km-long North Chile seismic gap
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