Case report: Thoracic endovascular aortic repair using a non-touch exclusion technique with a custom-made device for the treatment of a large patent ductus arteriosus

Patent ductus arteriosus (PDA) is a common congenital heart disease affecting roughly one in every 2,000 term births. Although most of the patients are diagnosed and treated during childhood, few cases may persist into adulthood. We presented a 27-year-old male patient with a 20.2 mm diameter PDA who was referred to our hospital with progressive fatigue and exertional dyspnea. Given the potential complications, usual techniques such as coil occlusion and duct occluders were deemed inappropriate for this patient. Thoracic endovascular aortic repair (TEVAR) using a non-touch exclusion technique was successfully performed for this patient. The patient was discharged with no major post-surgical complications. TEVAR could be a new, safe, and effective alternative treatment to other transcatheter procedures for complicated PDAs in some patients

Crystallinity Improvement of Co3O4 by Adding Thiourea

Tricobalt tetraoxide (Co3O4) samples having different thiourea/Co molar ratio of 0, 5 and 10 were prepared by wet chemical synthesis. The effects of thiourea content on the crystal structure-related parameters of Co3O4 were determined. The increase in the amount of thiourea caused a gradual decrease in the lattice parameters and specific surface area and an increase in the crystallinity and crystallite size. The experimental analysis results showed that thiourea content can be used to control the crystal structure-related parameters of Co3O4

Synthesis and Structural Characterization of Y-doped Pyramidal ZnO Powders

The present study focuses on the structural changes in ZnO powder induced by doping of a rare earth metal of Y. For this aim, we synthesized four ZnO samples with different Y-content using the combustion reaction method. X-ray powder diffraction (XRPD) technique and scanning electron microscopy (SEM) results confirm that the as-investigated structural parameters and morphology of the ZnO structure were affected directly by the concentration of Y dopant. For each Y-doped sample, randomly-oriented pyramidal morphology and the formation of a minority phase of Y2O3 were observed. A gradual increase in both lattice parameters and unit cell volume was detected with increasing Y content. All samples were found to be thermally stable in the temperature interval of 25-950 °C

Modulation of Sn concentration in ZnO nanorod array: intensification on the conductivity and humidity sensing properties

Tin (Sn)-doped zinc oxide (ZnO) nanorod arrays (TZO) were synthesized onto aluminum-doped ZnO-coated glass substrate via a facile sonicated sol–gel immersion method for humidity sensor applications. These nanorod arrays were grown at different Sn concentrations ranging from 0.6 to 3 at.%. X-ray diffraction patterns showed that the deposited TZO arrays exhibited a wurtzite structure. The stress/strain condition of the ZnO film metamorphosed from tensile strain/compressive stress to compressive strain/tensile stress when the Sn concentrations increased. Results indicated that 1 at.% Sn doping of TZO, which has the lowest tensile stress of 0.14 GPa, generated the highest conductivity of 1.31 S cm− 1. In addition, 1 at.% Sn doping of TZO possessed superior sensitivity to a humidity of 3.36. These results revealed that the optimum performance of a humidity-sensing device can be obtained mainly by controlling the amount of extrinsic element in a ZnO film

DETERMINATION AND EVALUATION OF METHANOL, ETHANOL AND HIGHER ALCOHOLS IN LEGALLY AND ILLEGALLY PRODUCED ALCOHOLIC BEVERAGES

In this paper, we demonstrated the results of ethanol, methanol and higher alcohols contents of the legally and illegally produced alcoholic beverage samples after analyzing headspace gas chromatographic methods conducted in Council of Forensic Medicine (ATK), Department of Chemistry, Istanbul, TURKEY between years 2015-2017. Fast and reliable analysis of the alcoholic beverages, especially in terms of methanol concentration, has vital importance primarily due to the cases of death arose from metabolic acidosis after consumption of illicit alcoholic beverages with high concentration of methanol produced in clandestine laboratories. 96 Turkish Rakı samples, 8 beer samples, 1 wine sample, 101 other strong drink samples, totaling to 206 samples, and 2 industrial ethanol samples were thoroughly investigated. An HS-GC-MS system was utilized for qualitative analysis of the higher alcohols and for scanning any volatile compound, whereas the determination of ethanol and methanol concentrations HS-GC-FID system was performed. So, after all results were investigated in detail, mentioning the key points for evaluations, it was clearly described whether the drinks comply with criteria set by Turkish Food Codex Communiqué on Distilled Alcoholic Beverages. 89 of 96 Rakı samples and 90 of 101 strong alcoholic beverages were not definitely compliant with the Communiqué since they contained either high concentration levels of methanol or tert-butanol, which is a denaturant

Headspace gas chromatography-mass spectrometry method for the determination of total cyanide concentration in water and post-mortem blood samples

In this study, we aimed to develop a headspace gas chromatography-mass spectrometry method for determining the total cyanide concentration in the forensic evidences. Total cyanide content of the samples was calculated based on the hydrogen cyanide gas concentration evaporated from the liquid sample in the headspace vial. Hexacyanoferrate(II) was used for the optimization of headspace oven temperature. We have found that iron-cyanide bonds were completely degraded after 0.2 mL of the sample was treated with 1 mL of 1 M sulfuric acid under the optimized headspace conditions where the temperature and the heating time were 120 degrees C and 12.5 min, respectively. Satisfactory recovery results for both aqueous and blood samples were obtained. The method was linear in the range 0.05-10 mu g mL(-1) of cyanide which was a suitable range for toxicological investigations. The proposed method was validated and applied to the post-mortem blood samples, drinking waters, and the other forensic evidences. The proposed method can easily be performed not only in the forensic laboratories, but in the related laboratories where the total cyanide analysis is a critical issue

Disinfection by-products precursors removal by enhanced coagulation and PAC adsorption

Because of concerns over the health effects of disinfection by-products (DBPs), the removal of DBPs precursors from the Terkos Lake water (TLW) of the Istanbul City by enhanced coagulation and powdered activated carbon (PAC) adsorption was investigated. The results of this study clearly indicated that the effects of coagulation and PAC adsorption on the removal of dissolved organic carbon (DOC) and DBPs precursors from TLW were complementary. Maximum DOC removal efficiency of enhanced coagulation by ferric chloride was 45%, and this type of natural organic matter (NOM) is preferentially large organic molecules with negatively charged functional groups. However, supplementing enhanced coagulation with PAC adsorption increased the removal of DOC to 76%, and PAC adsorption removed mostly low molecular weight and uncharged NOM substances. This study shows that the combination of enhanced coagulation and PAC adsorption can be more effective than enhanced coagulation alone for meeting the Turkish trihalomethanes (THM) limit of 150 mu g/L

The Protective Role of Resveratrol on Diabetic Cardiomyopathy

13th International Congress of Update in Cardiology and Cardiovascular Surgery (UCCVS) -- MAR 23-26, 2017 -- Cesme, TURKEYWOS: 00040730920007