195 results match your criteria Beton- Und Stahlbetonbau[Journal]


Ultra-high resolution imaging of thin films and single strands of polythiophene using atomic force microscopy.

Nat Commun 2019 04 4;10(1):1537. Epub 2019 Apr 4.

School of Physics and Astronomy, University of Nottingham, Nottingham, NG7 2RD, UK.

Real-space images of polymers with sub-molecular resolution could provide valuable insights into the relationship between morphology and functionality of polymer optoelectronic devices, but their acquisition is problematic due to perceived limitations in atomic force microscopy (AFM). We show that individual thiophene units and the lattice of semicrystalline spin-coated films of polythiophenes (PTs) may be resolved using AFM under ambient conditions through the low-amplitude (≤ 1 nm) excitation of higher eigenmodes of a cantilever. PT strands are adsorbed on hexagonal boron nitride near-parallel to the surface in islands with lateral dimensions ~10 nm. Read More

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http://dx.doi.org/10.1038/s41467-019-09571-6DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6449331PMC

Numerical Simulation of Dynamic Mechanical Properties of Concrete under Uniaxial Compression.

Materials (Basel) 2019 Feb 20;12(4). Epub 2019 Feb 20.

College of Water Resources and Civil Engineering, China Agricultural University, Beijing, 100083, China.

Based on the base force element method (BFEM), the dynamic mechanical behavior of concrete under uniaxial compression loading at different strain rates is investigated. The concrete can be considered as a three-phase composite material composed of aggregate, cement mortar, and interfacial transition zone (ITZ) on the meso-level. A two-dimensional random aggregate model is generated by the Monte Carlo method. Read More

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http://dx.doi.org/10.3390/ma12040643DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6416626PMC
February 2019
1 Read

Endoscopic Endonasal Approaches to Craniovertebral Junction Pathologies: A Single-Center Experience.

Turk Neurosurg 2018 Aug 27. Epub 2018 Aug 27.

Ankara University School of Medicine, Ibni Sina Hospital.

Aim: The craniovertebral junction is a remarkable anatomical area with unique anatomical and functional relationships, which present difficult challenges for surgeons. The traditional approach to addressing pathologies in this area is microscopic transoral resection with posterior fixation; however, endoscopic endonasal clivus and odontoid surgeries now currently gaining interest as alternative approaches. We reviewed our experience of using the endoscopic endonasal approach at our institution. Read More

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http://dx.doi.org/10.5137/1019-5149.JTN.23781-18.2DOI Listing
August 2018
2 Reads

Preference and Perception of Enhanced Images During Endonasal Endoscopic Surgery.

J Craniofac Surg 2018 Nov;29(8):2296-2298

Department of Otorhinolaryngology, Ankara University Medical School, Ankara, Turkey.

Image enhancement is used widely in endoscopic sinonasal surgery. It is yet to be established whether image enhancement has advantages over white-light endoscopy. The authors aimed to evaluate the preferences and subjective visual perception of image enhancement in diagnostic images acquired at the beginning of endonasal endoscopic surgeries. Read More

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http://dx.doi.org/10.1097/SCS.0000000000004801DOI Listing
November 2018
8 Reads

The growth and fluorescence of phthalocyanine monolayers, thin films and multilayers on hexagonal boron nitride.

Chem Commun (Camb) 2018 Oct;54(85):12021-12024

School of Physics & Astronomy, University of Nottingham, Nottingham NG7 2RD, UK.

Free-base phthalocyanine forms distinct interfacial phases and thin films on hexagonal boron nitride including a monolayer arrangement as determined using high resolution atomic force microscopy. The phases reveal significant differences in photoluminescence with an intense peak for monolayer coverages of flat-lying molecules which is red-shifted in agreement with theoretical models. Read More

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http://dx.doi.org/10.1039/c8cc06304dDOI Listing
October 2018

Inbreeding shapes tuberculosis progression in female adult badgers (Meles meles).

J Anim Ecol 2018 Nov;87(6):1497-1499

SaBio Research Group, Instituto de Investigación en Recursos Cinegéticos IREC (CSIC-UCLM-JCCM), Ciudad Real, Spain.

In Focus: Beton, C. H., Delahay, R. Read More

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http://dx.doi.org/10.1111/1365-2656.12901DOI Listing
November 2018
1 Read

Substrate-induced shifts and screening in the fluorescence spectra of supramolecular adsorbed organic monolayers.

J Chem Phys 2018 Aug;149(5):054701

School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD, United Kingdom.

We have investigated the influence of the substrate on the fluorescence of adsorbed organic molecules. Monolayer films of perylene-3,4,9,10-tetracarboxylic-3,4,9,10-diimide (PTCDI), a supramolecular network formed from PTCDI and melamine, and perylene-3,4,9,10-tetracarboxylic-3,4,9,10-dianhydride have been deposited on hexagonal boron nitride (hBN). The principal peaks in the fluorescence spectra of these films were red-shifted by up to 0. Read More

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http://aip.scitation.org/doi/10.1063/1.5041418
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http://dx.doi.org/10.1063/1.5041418DOI Listing
August 2018
10 Reads

Supramolecular Assemblies on Surfaces: Nanopatterning, Functionality, and Reactivity.

ACS Nano 2018 Aug 16;12(8):7445-7481. Epub 2018 Jul 16.

California NanoSystems Institute , University of California, Los Angeles , Los Angeles , California 90095 , United States.

Understanding how molecules interact to form large-scale hierarchical structures on surfaces holds promise for building designer nanoscale constructs with defined chemical and physical properties. Here, we describe early advances in this field and highlight upcoming opportunities and challenges. Both direct intermolecular interactions and those that are mediated by coordinated metal centers or substrates are discussed. Read More

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http://dx.doi.org/10.1021/acsnano.8b03513DOI Listing
August 2018
12 Reads

High-Temperature Molecular Beam Epitaxy of Hexagonal Boron Nitride with High Active Nitrogen Fluxes.

Materials (Basel) 2018 Jun 30;11(7). Epub 2018 Jun 30.

School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD, UK.

Hexagonal boron nitride (hBN) has attracted a great deal of attention as a key component in van der Waals (vdW) heterostructures, and as a wide band gap material for deep-ultraviolet devices. We have recently demonstrated plasma-assisted molecular beam epitaxy (PA-MBE) of hBN layers on substrates of highly oriented pyrolytic graphite at high substrate temperatures of ~1400 °C. The current paper will present data on the high-temperature PA-MBE growth of hBN layers using a high-efficiency radio-frequency (RF) nitrogen plasma source. Read More

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http://dx.doi.org/10.3390/ma11071119DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6073546PMC

Moiré-Modulated Conductance of Hexagonal Boron Nitride Tunnel Barriers.

Nano Lett 2018 07 27;18(7):4241-4246. Epub 2018 Jun 27.

School of Physics and Astronomy , University of Nottingham , Nottingham , NG7 2RD , United Kingdom.

Monolayer hexagonal boron nitride (hBN) tunnel barriers investigated using conductive atomic force microscopy reveal moiré patterns in the spatial maps of their tunnel conductance consistent with the formation of a moiré superlattice between the hBN and an underlying highly ordered pyrolytic graphite (HOPG) substrate. This variation is attributed to a periodc modulation of the local density of states and occurs for both exfoliated hBN barriers and epitaxially grown layers. The epitaxial barriers also exhibit enhanced conductance at localized subnanometer regions which are attributed to exposure of the substrate to a nitrogen plasma source during the high temperature growth process. Read More

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http://dx.doi.org/10.1021/acs.nanolett.8b01223DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6095635PMC
July 2018
7 Reads

MicroRNA-221/222 expression in atherosclerotic coronary artery plaque versus internal mammarian artery and in peripheral blood samples.

Biomarkers 2018 Nov 26;23(7):670-675. Epub 2018 Jun 26.

d Department of Cardiology, Faculty of Medicine , Cumhuriyet University , Sivas , Turkey.

Background: Atherosclerosis is a disease of the arterial wall with predilection to some sites on others. MicroRNAs (miRNAs) are a class of the non-coding RNAs regulating the target gene expression at post-transcriptional level. Different miRNAs were found at distinct stages of plaque development and expression of miRNAs' might play an important role in the local behaviour of atherosclerotic plaques. Read More

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http://dx.doi.org/10.1080/1354750X.2018.1474260DOI Listing
November 2018
11 Reads

Endospanin-2 enhances skeletal muscle energy metabolism and running endurance capacity.

JCI Insight 2018 05 3;3(9). Epub 2018 May 3.

Université de Lille, U1011 - EGID, F-59000 Lille, France.

Metabolic stresses such as dietary energy restriction or physical activity exert beneficial metabolic effects. In the liver, endospanin-1 and endospanin-2 cooperatively modulate calorie restriction-mediated (CR-mediated) liver adaptations by controlling growth hormone sensitivity. Since we found CR to induce endospanin protein expression in skeletal muscle, we investigated their role in this tissue. Read More

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http://dx.doi.org/10.1172/jci.insight.98081DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6012521PMC
May 2018
10 Reads

Noonan syndrome-causing SHP2 mutants impair ERK-dependent chondrocyte differentiation during endochondral bone growth.

Hum Mol Genet 2018 07;27(13):2276-2289

INSERM UMR 1043, Centre of Pathophysiology of Toulouse Purpan (CPTP), University of Toulouse Paul Sabatier, Toulouse, France.

Growth retardation is a constant feature of Noonan syndrome (NS) but its physiopathology remains poorly understood. We previously reported that hyperactive NS-causing SHP2 mutants impair the systemic production of insulin-like growth factor 1 (IGF1) through hyperactivation of the RAS/extracellular signal-regulated kinases (ERK) signalling pathway. Besides endocrine defects, a direct effect of these mutants on growth plate has not been explored, although recent studies have revealed an important physiological role for SHP2 in endochondral bone growth. Read More

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https://academic.oup.com/hmg/article/27/13/2276/4969378
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http://dx.doi.org/10.1093/hmg/ddy133DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC6005060PMC
July 2018
13 Reads

The partial dissociation of MHC class I-bound peptides exposes their N terminus to trimming by endoplasmic reticulum aminopeptidase 1.

J Biol Chem 2018 05 29;293(20):7538-7548. Epub 2018 Mar 29.

Institute for Life Sciences, University of Southampton, Southampton SO17 1BJ, United Kingdom, and

Endoplasmic reticulum aminopeptidase 1 (ERAP1) and ERAP2 process N-terminally extended antigenic precursors for optimal loading onto major histocompatibility complex class I (MHC I) molecules. We and others have demonstrated that ERAP1 processes peptides bound to MHC I, but the underlying mechanism is unknown. To this end, we utilized single-chain trimers (SCT) of the ovalbumin-derived epitope SIINFEKL (SL8) tethered to the H2-K MHC I determinant from mouse and introduced three substitutions, E63A, K66A, and W167A, at the A-pocket of the peptide-binding groove in the MHC I heavy chain, which interact with the N termini of peptides. Read More

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http://dx.doi.org/10.1074/jbc.RA117.000313DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5961055PMC
May 2018
4 Reads

Lattice-Matched Epitaxial Graphene Grown on Boron Nitride.

Nano Lett 2018 01 12;18(1):498-504. Epub 2017 Dec 12.

School of Physics and Astronomy, University of Nottingham , Nottingham NG7 2RD, United Kingdom.

Lattice-matched graphene on hexagonal boron nitride is expected to lead to the formation of a band gap but requires the formation of highly strained material and has not hitherto been realized. We demonstrate that aligned, lattice-matched graphene can be grown by molecular beam epitaxy using substrate temperatures in the range 1600-1710 °C and coexists with a topologically modified moiré pattern with regions of strained graphene which have giant moiré periods up to ∼80 nm. Raman spectra reveal narrow red-shifted peaks due to isotropic strain, while the giant moiré patterns result in complex splitting of Raman peaks due to strain variations across the moiré unit cell. Read More

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http://pubs.acs.org/doi/10.1021/acs.nanolett.7b04453
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http://dx.doi.org/10.1021/acs.nanolett.7b04453DOI Listing
January 2018
17 Reads

Effects of and - polymorphisms on coronary artery disease risk and patient survival in a Turkish population.

Biomed Rep 2017 Dec 3;7(6):547-552. Epub 2017 Oct 3.

Department of Statistics, Faculty of Science, Cumhuriyet University, 58140 Sivas, Turkey.

Myeloperoxidase (MPO) is an oxidative hemoprotein compound expressed in polymorphonuclear leukocytes that contributes to inflammatory responses. Coronary artery disease (CAD), as the most prevalent form of heart disease, is considered to originate from an interaction between genetic and environmental factors. In the present study, the potential associations between and - polymorphisms with CAD were investigated in a Turkish population using a polymerase chain reaction-based restriction fragment length polymorphism (RFLP) assay technique. Read More

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http://dx.doi.org/10.3892/br.2017.995DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5702965PMC
December 2017
17 Reads

Supramolecular heterostructures formed by sequential epitaxial deposition of two-dimensional hydrogen-bonded arrays.

Nat Chem 2017 12 24;9(12):1191-1197. Epub 2017 Jul 24.

School of Physics & Astronomy, University of Nottingham, Nottingham NG7 2RD, UK.

Two-dimensional (2D) supramolecular arrays provide a route to the spatial control of the chemical functionality of a surface, but their deposition is in almost all cases limited to a monolayer termination. Here we investigated the sequential deposition of one 2D array on another to form a supramolecular heterostructure and realize the growth-normal to the underlying substrate-of distinct ordered layers, each of which is stabilized by in-plane hydrogen bonding. For heterostructures formed by depositing terephthalic acid or trimesic acid on cyanuric acid/melamine, we have determined, using atomic force microscopy under ambient conditions, a clear epitaxial arrangement despite the intrinsically distinct symmetries and/or lattice constants of each layer. Read More

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http://dx.doi.org/10.1038/nchem.2824DOI Listing
December 2017
10 Reads

Cartilage reinforcement graft versus fascia graft in tympanoplasty

Turk J Med Sci 2017 08 23;47(4):1124-1127. Epub 2017 Aug 23.

Background/aim: The purpose of this study was to compare cartilage reinforcement graft results with temporalis fascia graft alone in terms of hearing and anatomical outcomes in tympanoplasty. Materials and methods: Patients who underwent tympanoplasty with/without ossiculoplasty and/or mastoidectomy at a university hospital from 2006 through 2013 were reviewed retrospectively. The patients were divided into those grafted with temporalis muscle fascia alone and with fascia reinforced with cartilage. Read More

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http://online.journals.tubitak.gov.tr/openDoiPdf.htm?mKodu=s
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http://dx.doi.org/10.3906/sag-1602-151DOI Listing
August 2017
9 Reads

Supramolecular networks stabilise and functionalise black phosphorus.

Nat Commun 2017 11 9;8(1):1385. Epub 2017 Nov 9.

School of Physics & Astronomy, University of Nottingham, Nottingham, NG7 2RD, UK.

The limited stability of the surface of black phosphorus (BP) under atmospheric conditions is a significant constraint on the exploitation of this layered material and its few layer analogue, phosphorene, as an optoelectronic material. Here we show that supramolecular networks stabilised by hydrogen bonding can be formed on BP, and that these monolayer-thick films can passivate the BP surface and inhibit oxidation under ambient conditions. The supramolecular layers are formed by solution deposition and we use atomic force microscopy to obtain images of the BP surface and hexagonal supramolecular networks of trimesic acid and melamine cyanurate (CA. Read More

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http://dx.doi.org/10.1038/s41467-017-01797-6DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5680224PMC
November 2017
10 Reads

Giant Quantum Hall Plateau in Graphene Coupled to an InSe van der Waals Crystal.

Phys Rev Lett 2017 Oct 10;119(15):157701. Epub 2017 Oct 10.

School of Physics and Astronomy, The University of Nottingham, Nottingham NG7 2RD, United Kingdom.

We report on a "giant" quantum Hall effect plateau in a graphene-based field-effect transistor where graphene is capped by a layer of the van der Waals crystal InSe. The giant quantum Hall effect plateau arises from the close alignment of the conduction band edge of InSe with the Dirac point of graphene. This feature enables the magnetic-field- and electric-field-effect-induced transfer of charge carriers between InSe and the degenerate Landau level states of the adjacent graphene layer, which is coupled by a van der Waals heterointerface to the InSe. Read More

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https://link.aps.org/doi/10.1103/PhysRevLett.119.157701
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http://dx.doi.org/10.1103/PhysRevLett.119.157701DOI Listing
October 2017
11 Reads

Exploring Step-by-Step Assembly of Nanoparticle:Cytochrome Biohybrid Photoanodes.

ChemElectroChem 2017 Aug 15;4(8):1959-1968. Epub 2017 May 15.

School of Biomedical Sciences, and The Astbury Centre for Structural Molecular BiologyUniversity of LeedsLeedsLS2 9JTU.K.

Coupling light-harvesting semiconducting nanoparticles (NPs) with redox enzymes has been shown to create artificial photosynthetic systems that hold promise for the synthesis of solar fuels. High quantum yields require efficient electron transfer from the nanoparticle to the redox protein, a property that can be difficult to control. Here, we have compared binding and electron transfer between dye-sensitized TiO nanocrystals or CdS quantum dots and two decaheme cytochromes on photoanodes. Read More

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http://dx.doi.org/10.1002/celc.201700030DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5573906PMC
August 2017
89 Reads

An atomic carbon source for high temperature molecular beam epitaxy of graphene.

Sci Rep 2017 07 26;7(1):6598. Epub 2017 Jul 26.

School of Physics & Astronomy, University of Nottingham, Nottingham, NG7 2RD, UK.

We report the use of a novel atomic carbon source for the molecular beam epitaxy (MBE) of graphene layers on hBN flakes and on sapphire wafers at substrate growth temperatures of ~1400 °C. The source produces a flux of predominantly atomic carbon, which diffuses through the walls of a Joule-heated tantalum tube filled with graphite powder. We demonstrate deposition of carbon on sapphire with carbon deposition rates up to 12 nm/h. Read More

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http://dx.doi.org/10.1038/s41598-017-07021-1DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5529545PMC
July 2017
9 Reads

Demonstration of Ischemia in Myocardial Perfusion Scintigraphy before Coronary Revascularization Decreases Acute Coronary Syndrome-related Hospitalizations.

World J Nucl Med 2017 Jul-Sep;16(3):212-217

Department of Cardiology, Cumhuriyet University Medical School, Sivas, Turkey.

In this study, we compared the patients who underwent coronary angiography (CAG), followed by revascularization by coronary artery stent implantation according to the CAG results without any evidence of ischemia with myocardial perfusion scintigraphy (MPS), and the patients who underwent revascularization by coronary artery stent implantation following the detection of ischemia in MPS before CAG in terms of the mortality and hospitalization due to acute coronary syndrome (ACS). Between January 2009 and January 2016, a total of 407 patients (52% males, 48% females; mean age: 66 ± 9 years; range: 40-85 years) who underwent CAG following diagnosis of stable angina and underwent coronary artery stenting were retrospectively analyzed. The patients were divided into two groups: Group 1 ( = 200) included those who had MPS before CAG and in whom ischemia was detected and stent was implanted, and Group 2 ( = 207) included those who had stent implantation according to the CAG results without prior MPS. Read More

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http://dx.doi.org/10.4103/1450-1147.207279DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5460305PMC
July 2017
46 Reads

Mean Platelet Volume as a Predictor of Heart Failure-Related Hospitalizations in Stable Heart Failure Outpatients with Sinus Rhythm.

Acta Cardiol Sin 2017 May;33(3):292-300

Departments of Cardiology, Cumhuriyet University Medical School, Sivas, Turkey.

Background: In this study, we investigated the relationship between the mean platelet volume (MPV) with mortality and heart failure (HF)-related hospitalization in stable chronic HF outpatients with reduced ejection fraction (HFrEF) and with sinus rhythm (SR).

Methods: This retrospective cohort study included 197 consecutive stable chronic HFrEF outpatients with SR, who were admitted to our cardiology outpatient clinics for examination between January 2014 and January 2015. According to the receiver-operating characteristic curve analysis, the optimal cut-off value of MPV to predict HF-related hospitalization was > 9. Read More

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5445247PMC
May 2017
20 Reads

Real-world stroke prevention strategies in nonvalvular atrial fibrillation in patients with renal impairment.

Eur J Clin Invest 2017 Jun 16;47(6):428-438. Epub 2017 May 16.

Department of Cardiology, Faculty of Medicine, Mugla Sitki Kocman University, Muğla, Turkey.

Background: The data regarding stroke prevention strategies in nonvalvular atrial fibrillation (NVAF) are limited especially in patients with renal impairment (RI). We sought to evaluate management dilemmas in patients with concurrent NVAF and RI in RAMSES (ReAl-life Multicenter Survey Evaluating Stroke Prevention Strategies inTurkey) study.

Methods: We conducted a prospective, multicenter, nation-wide registry in NVAF patients in outpatient cardiology clinics. Read More

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http://dx.doi.org/10.1111/eci.12758DOI Listing
June 2017
82 Reads

Drug Adherence in Patients With Nonvalvular Atrial Fibrillation Taking Non-Vitamin K Antagonist Oral Anticoagulants in Turkey: NOAC-TR.

Clin Appl Thromb Hemost 2018 Apr 19;24(3):525-531. Epub 2017 Feb 19.

19 Department of Cardiology, Ege University, Izmir, Turkey.

Adherence to non-vitamin K antagonist oral anticoagulants (NOACs) is an important factor for ensuring efficacy and safety in nonvalvular atrial fibrillation (NVAF). There are controversial results regarding NOAC adherence in real-world data and there are no data about NOAC adherence in Turkish population. This study investigated the NOAC adherence based on self-report, factors affecting nonadherence, and the relation of the adherence level with efficacy and safety outcomes. Read More

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http://dx.doi.org/10.1177/1076029617693940DOI Listing
April 2018
69 Reads

Cancer Antigen 125 is Associated with Length of Stay in Patients with Acute Heart Failure.

Tex Heart Inst J 2017 Feb 1;44(1):22-28. Epub 2017 Feb 1.

Length of stay is the primary driver of heart-failure hospitalization costs. Because cancer antigen 125 has been associated with poor morbidity and mortality rates in heart failure, we investigated the relationship between admission cancer antigen 125 levels and lengths of stay in heart-failure patients. A total of 267 consecutive patients (184 men, 83 women) with acute decompensated heart failure were evaluated prospectively. Read More

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http://dx.doi.org/10.14503/THIJ-15-5626DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5317355PMC
February 2017
5 Reads

Guideline-adherent therapy for stroke prevention in atrial fibrillation in different health care settings: Results from RAMSES study.

Eur J Intern Med 2017 May 24;40:50-55. Epub 2017 Feb 24.

Kartal Kosuyolu Heart Education and Research Hospital, Turkey.

Objective: No studies have been conducted in Turkey to compare the quality of stroke prevention therapies provided in different healthcare settings in patients with atrial fibrillation (AF). Therefore, we aimed to evaluate possible differences between secondary (SH) and tertiary hospital (TH) settings in the effectiveness of implementing AF treatment strategies.

Methods: Baseline characteristics of 6273 patients with non-valvular AF enrolled in the RAMSES (ReAl-life Multicentre Survey Evaluating Stroke Prevention Strategies in Turkey) study were compared. Read More

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http://dx.doi.org/10.1016/j.ejim.2017.02.011DOI Listing
May 2017
90 Reads

Flow and Diameter Changes of Forearm Arteries During Temporary Unilateral Reciprocal Occlusion: A Prospective Observational Study.

J Clin Ultrasound 2017 May 6;45(4):197-203. Epub 2017 Feb 6.

Department of Cardiology, Heart Center, Cumhuriyet University, Sivas, Turkey.

Purpose: Transradial and transulnar artery approaches are commonly used for percutaneous interventions, with considerably low risk of developing hand ischemia, for reasons that have not been fully understood. The aim of this study was to evaluate the changes in the diameter, peak systolic flow velocity (PSV), and volume flow (VF) of the radial (RA) and ulnar artery (UA) during unilateral reciprocal temporary occlusion.

Methods: A total of 204 extremity arteries of 102 consecutive patients were evaluated using Doppler ultrasonography. Read More

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http://dx.doi.org/10.1002/jcu.22440DOI Listing
May 2017
6 Reads

Gender-related differences in presentation and treatment of patients with non-valvular atrial fibrillation: results from RAMSES study.

Turk Kardiyol Dern Ars 2017 Jan;45(1):16-25

Department of Cardiology, Muğla Sıtkı Koçman University Faculty of Medicine, Muğla, Turkey.

Objective: Gender is an important feature in the management of atrial fibrillation (AF). This study investigated gender-related differences in patients with AF in Turkey.

Methods: As a part of RAMSES (ReAl-life Multicenter Survey Evaluating Stroke prevention strategies in Turkey, NCT02344901) study, information of the patients with AF who successively applied to the hospital was analyzed. Read More

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http://dx.doi.org/10.5543/tkda.2016.89894DOI Listing
January 2017
55 Reads

Association between MMP-3 and MMP-9 polymorphisms and coronary artery disease.

Biomed Rep 2016 Dec 18;5(6):709-714. Epub 2016 Oct 18.

Cardiovascular Surgery, Heart Center, Cumhuriyet University, Sivas 58140, Turkey.

Matrix metalloproteinase (MMP)-3 and MMP-9 polymorphisms are characterized by plaque stability in coronary arteries. The aim of the current study was to investigate the polymorphism in the gene and C/T polymorphism in the gene in patients with coronary artery disease (CAD). The study population consisted of 400 patients who underwent coronary angiography. Read More

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http://dx.doi.org/10.3892/br.2016.782DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5228363PMC
December 2016
4 Reads

Which Coronary Lesions Are More Prone to Cause Acute Myocardial Infarction?

Arq Bras Cardiol 2017 Feb 16;108(2):149-153. Epub 2017 Jan 16.

Dumlupinar University Kutahya Evliya Celebi Education and Research Hospital, Kutahya - Turkey.

Background:: According to common belief, most myocardial infarctions (MIs) are due to the rupture of nonsevere, vulnerable plaques with < 70% obstruction. Data from recent trials challenge this belief, suggesting that the risk of coronary occlusion is, in fact, much higher after severe stenosis. The aim of this study was to investigate whether or not acute ST-elevation MIs result from high-grade stenoses by evaluating the presence of coronary collateral circulation (CCC). Read More

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http://www.gnresearch.org/doi/10.5935/abc.20170003
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http://dx.doi.org/10.5935/abc.20170003DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5344660PMC
February 2017
13 Reads

Bilateral choanal atresia in an adult woman with pycnodysostosis.

Congenit Anom (Kyoto) 2017 May;57(3):91-92

Department of Medical Genetics, Faculty of Medicine, Ankara University, Ankara, Turkey.

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http://dx.doi.org/10.1111/cga.12204DOI Listing
May 2017
11 Reads

Prediction of fractional flow reserve with angiographic DILEMMA score.

Anatol J Cardiol 2017 Apr 10;17(4):285-292. Epub 2016 Nov 10.

Department of Cardiology, Heart Center, Cumhuriyet University Health Services Training and Research Hospital, Cumhuriyet University; Sivas-Turkey.

Objective: Angiographic assessment of stenosis has limited predictive value for functionally significant lesions compared with fractional flow reserve (FFR). The recently developed angiographic DILEMMA score, which consists of minimal lumen diameter (MLD), lesion length (LL) and Bypass Angioplasty Revascularization Investigation (BARI) Myocardial Jeopardy Index (MJI) was found to have diagnostic value in predicting FFR ≤0.80. Read More

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http://dx.doi.org/10.14744/AnatolJCardiol.2016.7379DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5469108PMC
April 2017
6 Reads

Impact of valvular heart disease on oral anticoagulant therapy in non-valvular atrial fibrillation: results from the RAMSES study.

J Thromb Thrombolysis 2017 Feb;43(2):157-165

Department of Cardiology, Faculty of Medicine, Mugla Sitki Kocman Universitesi Tip Fakultesi, Orhaniye Mah. Haluk Özsoy Cad., 48000, Muğla, Turkey.

The definition of non-valvular atrial fibrillation (NVAF) is controversial. We aimed to assess the impact of valvular heart disease on stroke prevention strategies in NVAF patients. The RAMSES study was a multicenter and cross-sectional study conducted on NVAF patients (ClinicalTrials. Read More

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http://dx.doi.org/10.1007/s11239-016-1445-1DOI Listing
February 2017
139 Reads

The value of exercise SPET for the detection of coronary artery steal syndrome secondary to unligated major side branch of left internal mammary artery.

Hell J Nucl Med 2016 Sep-Dec;19(3):200-207. Epub 2016 Nov 8.

Department of Cardiology, Heart Center, Cumhuriyet University, PC 58140, Sivas, Turkey.

Objective: The clinical significance of unligated major left internal mammary artery (LIMA)-side branches (SB) remains controversial in patients with previous coronary artery bypass graft (CABG) surgery. The aim of this study was to investigate the clinical significance of unligated major LIMA-SB by using exercise myocardial perfusion imaging (MPI) with single-photon emission tomography.

Subjects And Methods: We conducted a retrospective analysis of 2819 consecutive patients who underwent diagnostic angiography. Read More

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http://dx.doi.org/10.1967/s002449910401DOI Listing
June 2017
9 Reads

Real-life use of digoxin in patients with non-valvular atrial fibrillation: data from the RAMSES study.

J Clin Pharm Ther 2016 Dec 27;41(6):711-717. Epub 2016 Sep 27.

Kartal Kosuyolu Heart Education and Research Hospital, Istanbul, Turkey.

What Is Known And Objective: Although inappropriate use of digoxin has been described in various populations, a real-world evaluation of patterns of digoxin prescription has not been well studied in patients with atrial fibrillation (AF). The aim of this study was to identify prevalence, indications and appropriateness of digoxin use in the general population of patients with non-valvular AF (NVAF) in Turkey.

Methods: We included and classified patients from the RAMSES (ReAl-life Multicentre Survey Evaluating Stroke prevention strategies in Turkey) study, a prospective registry including 6273 patients with NVAF, on the basis of digoxin use. Read More

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http://dx.doi.org/10.1111/jcpt.12460DOI Listing
December 2016
1 Read

ReAl-life Multicenter Survey Evaluating Stroke prevention strategies in non-valvular atrial fibrillation (RAMSES study).

Anatol J Cardiol 2016 10;16(10):734-741

Department of Cardiology, Faculty of Medicine, Muğla Sıtkı Kocman University, Muğla-Turkey.

Objective: Data regarding stroke prevention strategies in non-valvular atrial fibrillation (NVAF) are limited to vitamin K antagonists (VKAs). This study aimed to evaluate real-life stroke prevention strategies for NVAF patients in the era of non-VKA oral anticoagulants (NOACs).

Methods: We established a cross-sectional, multicenter, nationwide registry of NVAF patients. Read More

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5324932PMC
http://dx.doi.org/10.14744/AnatolJCardiol.2016.6752DOI Listing
October 2016
31 Reads

Anatomic assessment of the left main bifurcation and dynamic bifurcation angles using computed tomography angiography.

Folia Morphol (Warsz) 2017 7;76(2):197-207. Epub 2016 Oct 7.

Department of Cardiology, Heart Centre, University Hospital, Cumhuriyet University, Sivas, Turkey, Turkey.

Background: An understanding of the left main coronary artery (LMCA) anatomy is important for accurate diagnosis and therapy. We aimed to investigate LMCA anatomy via 128-multisliced coronary computed-tomography-angiography (CCTA) in patients with normal LMCA.

Materials And Methods: A total of 201 CCTA studies were included in this study. Read More

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http://dx.doi.org/10.5603/FM.a2016.0059DOI Listing
October 2016
2 Reads

Hexagonal Boron Nitride Tunnel Barriers Grown on Graphite by High Temperature Molecular Beam Epitaxy.

Sci Rep 2016 Sep 29;6:34474. Epub 2016 Sep 29.

School of Physics and Astronomy, University of Nottingham, Nottingham NG7 2RD, UK.

We demonstrate direct epitaxial growth of high-quality hexagonal boron nitride (hBN) layers on graphite using high-temperature plasma-assisted molecular beam epitaxy. Atomic force microscopy reveals mono- and few-layer island growth, while conducting atomic force microscopy shows that the grown hBN has a resistance which increases exponentially with the number of layers, and has electrical properties comparable to exfoliated hBN. X-ray photoelectron spectroscopy, Raman microscopy and spectroscopic ellipsometry measurements on hBN confirm the formation of sp-bonded hBN and a band gap of 5. Read More

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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5041098PMC
http://dx.doi.org/10.1038/srep34474DOI Listing
September 2016
25 Reads

Relationship between functional capacity and socioeconomic status in a cohort of Turkish heart failure patients.

Turk Kardiyol Dern Ars 2016 09;44(6):481-7

Department of Cardiology, Cumhuriyet University Faculty of Medicine, Sivas, Turkey.

Objective: New York Heart Association (NYHA) classification predicts prognosis for heart failure (HF) patients. Socioeconomic status (SES) has the potential to affect treatment strategy and disease course. The present objective was to investigate whether SES of Turkish HF patients affected NYHA classification. Read More

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http://dx.doi.org/10.5543/tkda.2015.85594DOI Listing
September 2016
19 Reads

Right Ventricular Dysfunction Complicates Time in Therapeutic Range in Heart Failure Patients Receiving Warfarin.

Pharmacology 2017 22;99(1-2):19-26. Epub 2016 Sep 22.

Department of Cardiology, Heart Center, University Hospital, Cumhuriyet University, Sivas, Turkey.

Aim: We aimed to evaluate the effect of echocardiographically demonstrated right ventricular dysfunction (RVD) on time in therapeutic range (TTR) in heart failure (HF) patients receiving warfarin therapy.

Methods: A total of 893 consecutive HF patients were included and classified into 4 different subgroups: HF with preserved ejection fraction (HFpEF) without RVD (n = 373), HF with reduced EF (HFrEF) without RVD (n = 215), HFpEF with RVD (n = 106) and HFrEF with RVD (n = 199). Groups were compared according to baseline, demographic and clinical data and the characteristics of warfarin therapy. Read More

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http://dx.doi.org/10.1159/000449389DOI Listing
March 2017
65 Reads

Evaluation of anatomy and variations of superficial palmar arch and upper extremity arteries with CT angiography.

Surg Radiol Anat 2017 Apr 19;39(4):419-426. Epub 2016 Sep 19.

Faculty of Medicine, Department of Cardiology, Heart Center Hospital, Cumhuriyet University, Sivas, Turkey.

Aim: To evaluate the abnormalities and variations of the arterial system of upper extremities and superficial palmar arch with computed tomography angiography and to guide the clinician during this procedure.

Methods: A total of 156 upper extremities of 78 cases were retrospectively analyzed using computed tomography angiography. The study was approved by the local ethics committee of the hospital. Read More

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http://dx.doi.org/10.1007/s00276-016-1750-6DOI Listing
April 2017
3 Reads

Suboptimal use of non-vitamin K antagonist oral anticoagulants: Results from the RAMSES study.

Medicine (Baltimore) 2016 Aug;95(35):e4672

aDepartment of Cardiology, Faculty of Medicine, Mugla Sitki Kocman University, Mugla bDepartment of Cardiology, Faculty of Medicine, Sivas Cumhuriyet University, Sivas cDepartment of Cardiology, Kahramanmaraş Necip Fazıl State Hospital, Kahramanmaraş dDepartment of Cardiology,Trabzon Ahi Evren Chest Cardiovascular Surgery Education and Research Hospital, Trabzon eDepartment of Cardiology,Fethiye State Hospital, Fethiye fDepartment of Cardiology, Elazığ Education and Research Hospital, Elazığ gDepartment of Cardiology, Burdur State Hospital, Burdur hDepartment of Cardiology, İskilip Atıf Hoca State Hospital, Corum iDepartment of Cardiology, Samsun Education and Research Hospital, Samsun jDepartment of Cardiology, Aksaray State Hospital, Aksaray kDepartment of Cardiology, Diyarbakır Gazi Yaşargil Education and Research Hospital, Diyarbakır lDepartment of Cardiology, Gönen State Hospital, Gönen mKartal Kosuyolu Heart Education and Research Hospital, Kartal, Istanbul, Turkey.

This study aimed to investigate the potential misuse of novel oral anticoagulants (NOACs) and the physicians' adherence to current European guideline recommendations in real-world using a large dataset from Real-life Multicenter Survey Evaluating Stroke Prevention Strategies in Turkey (RAMSES Study).RAMSES study is a prospective, multicenter, nationwide registry (ClinicalTrials.gov identifier NCT02344901). Read More

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http://dx.doi.org/10.1097/MD.0000000000004672DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC5008576PMC
August 2016
56 Reads

Atrial Electromechanical Coupling in Patients with Lichen Planus.

Korean Circ J 2016 Jul 21;46(4):530-5. Epub 2016 Jul 21.

Department of Cardiology, Firat University, Faculty of Medicine, Elazig, Turkey.

Background And Objectives: A chronic inflammatory disease, lichen planus may cause disturbance of atrial electromechanical coupling and increase the risk of atrial fibrillation. The aim of this study was to evaluate atrial electromechanical delay with both electrocardiography (ECG) and echocardiography in patients with lichen planus (LP).

Subjects And Methods: Seventy-two LP patients (43 males [59. Read More

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http://dx.doi.org/10.4070/kcj.2016.46.4.530DOI Listing
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4965432PMC
July 2016
15 Reads