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Journal of Geriatric Cardiology 2022年第3期19卷 241-244页

作者： Mehmet Rasih Sonsoz Selin Berk Hamdi Pusuroglu ahmet guler Fatih Uzun Department of Cardiology Basaksehir Cam&Sakura City HospitalIstanbulTurkey Department of Hematology Basaksehir Cam&Sakura City HospitalIstanbulTurkey

Severe valvular aortic stenosis is a commonly encountered disorder in the elderly,and the intervention is indicated when the pa-tient is *** aortic valve im-plantation(TAVI)is a safer therapeutic option in symptomatic patients who cannot undergo surgery or who have high,intermediate,or even low surgic-al risk.[1]Idiopathic thrombocytopenic purpura(ITP)is acquired thrombocytopenia caused by autoan-tibodies against platelet antigens.[2]Herein,we re-port an 81-year-old patient,who was diagnosed with primary ITP two years ago,was admitted to the hospital for heart failure with acute coronary syndrome and severe aortic *** describe our experience in the peri-operative management of the case of coronary and structural intervention in a patient with ITP.

关键词： coronary aortic patient

Infiltration of A6063 aluminium alloy into SiC-B_4C hybrid preforms using vacuum assisted block mould investment casting technique

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Transactions of Nonferrous Metals Society of China 2012年第7期22卷 1563-1567页

作者： Alptekin KISASOZ Kerem Altug guler ahmet KARAASLAN Department of Metallurgy and Materials Engineering Yildiz Technical UniversityDavutpasa CampusTR 34210EsenlerIstanbulTurkey

Production of A6063/SiC-B4C hybrid composite using vacuum assisted block mould investment casting was investigated. Firstly,SiC-B4C hybrid preforms were fabricated in cylindrical *** preferred mean particle size of the SiC and B4C powders were 60μm and 55μm *** early experiments,single powder ratio of 85%SiC and 15%B4C was selected to produce the tough ***,the preforms were placed into the cylindrical shape gypsum bonded block investment moulds and A6063 alloy was infiltrated into the preforms using vacuum assisted（-10 5 Pa）casting *** fraction of preforms was determined using Archimedes’*** fabricated cast specimens were characterized using hardness tests,image analysis and SEM observations and EDX *** result indicates that,by the vacuum assisted block mould investment casting technique,the infiltration of the preforms by molten metal was successfully realized.

关键词： AlMMC SiC B4C investment casting hybrid preform

Cooling slope casting of AA7075 alloy combined with reheating and thixoforging

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Transactions of Nonferrous Metals Society of China 2019年第11期29卷 2237-2244页

作者： Kerem Altug guler Alptekin KISASOZ Gokhan OZER ahmet KARAASLAN Department of Metallurgical and Material Engineering Yildiz Technical UniversityTR34210IstanbulTurkey Aluminium Test Training and Research Center(ALUTEAM)Fatih Sultan Mehmet Vakif UniversityTR34445Halic CampusIstanbulTurkey

Cooling slope casting has been applied to aluminium casting alloys for producing ingots with non-dendritic ***-solid forming of the AA7075 was studied via cooling slope casting,reheating and thixoforging processes in order to determine the effect of semi-solid casting on the microstructure of the ***7075 ingots with non-dendritic microstructure were produced with cooling slope *** were characterized by light microscopy,image analysis,scanning electron microscopy and EDS *** resulting structures are promising in terms of grain size and *** was realized that grain coarsening may occur very suddenly in the reheating *** slope castings were obtained with 30°and 60°inclination angles,and in comparison,60°castings showed better ***,by using short reheating periods,semi-solid forging causes trace formation in the solid grains.

关键词： semi-solid alloy cooling slope casting thixoforging AA7075 alloy

Influence of T6 heat treatment on A356 and A380 aluminium alloys manufactured by thixoforging combined with low superheat casting

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Transactions of Nonferrous Metals Society of China 2018年第3期28卷 385-392页

作者： Ridvan GECU Serhat ACAR Alptekin KISASOZ Kerem ALTUG guler ahmet KARAASLAN Department of Metallurgical and Materials Engineering Yildiz Technical UniversityDavutpasa Campus

The effects of T6 heat treatment on thixoforged A356 and A380 aluminium alloys were *** superheat casting(LSC)technique was carried out to prepare proper specimens for thixoforging *** samples were poured at 20°C above their liquidus temperatures which provided the formation of equiaxed grains instead of dendritic *** billets were reheated for varied time from 20 to 80 min and thixoforged with 50%deformation *** thixoforging process,the samples were T6 heat treated for both A356 and A380 *** microstructural evaluation and hardness alteration of thixoforged,solution treated and aged specimens were examined comparatively by using optical microscopy,scanning electron microscopy with energy-dispersive X-ray spectroscopy and Brinell hardness equipment.T6 heat treatment provided relatively uniform microstructure with newly formed precipitates that are Mg2Si and Al2Cu for A356 and A380 billets,***,hardness after artificial aging was increased considerably and reached HB 93 for A356 and HB 120 for A380 alloys.

关键词： T6 heat treatment thixoforging low superheat casting aluminium alloy

New Copper（Ⅱ） and Nickel（Ⅱ） Complexes of 4-Morpholinoacetophenone Thiosemicarbazone： Structural, Electrochemical and Antimicrobial Studies

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Chinese Journal of Chemistry 2007年第3期25卷 307-311页

作者： BINGOL Haluk COSKUN ahmet AKGEMCI Emine guler KAYA Basturk ATALAY Tevfik Selcuk University Faculty of Education Chemistry Department Konya 42099 Turkey Selcuk University Faculty of Education Biology Department Konya 42099 Turkey

4-Morpholinoacetophenone thiosemicarbazone, MAPT, and its nickel（Ⅱ） and copper（Ⅱ） complexes have been prepared and characterized by elemental analysis, magnetic susceptibility, spectral methods （FT-IR, ^1H NMR） and cyclic voltammetry. Electrochemical behaviors of the complexes have been studied by cyclic voltammetry in DMF media showing metal centered reduction processes for both of them. The redox properties, nature of the electrode processes and the stability of the complexes were discussed. [Cu（MAPT）2]Cl2 complex shows Cu（Ⅱ）/Cu（Ⅰ） couple and quasi-reversible wave associated with the Cu（Ⅲ）/Cu（Ⅱ） process. The reduction/oxidation potential values depend on the structures of complexes. Also, the antimicrobial activities of these complexes were determined against S. aureus, E. coli and B. subtilis.

关键词： thiosemicarbazone metal complexes spectra cyclic voltammetry antimicrobial activity

Psychological review of hemodialysis patients and kidney transplant recipients during the COVID-19 pandemic

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World Journal of Clinical Cases 2023年第16期11卷 3780-3790页

作者： Ayse Gokcen Gundogmus Ebru Gok Oguz Sanem guler-Cimen Yasemin Kocyigit ahmet Emin Dogan Mehmet Deniz Ayli Department of Psychiatry Etlik City HospitalAnkara 65100CankayaTurkey Department of Nephrology Etlik City HospitalAnkara 65100CankayaTurkey Department of General Surgery Etlik City HospitalAnkara 65100CankayaTurkey Department of Urology Etlik City HospitalAnkara 65100CankayaTurkey

BACKGROUND Kidney transplantation(KT)and end-stage renal disease(ESRD)requiring hemodialysis(HD)increase the incidence of morbidity and mortality associated with coronavirus disease 2019(COVID-19)*** COVID-19 pandemic has had a negative effect on the psychological well-being of COVID-19 patients,especially those with a high-risk of infectious *** prevalence of anxiety and depression is known to be higher in ESRD patients undergoing HD than in the general *** the other hand,KT recipients have different treatment requirements compared to HD patients,including adherence to complex immunosuppressive regimens and compliance with follow-up *** hypothesized that psychosocial difficulties and stressors would differ between ESRD patients undergoing HD and KT recipients during the COVID-19 *** so,each group may require different interventions to maintain their psychosocial *** To measure and compare the levels of stress,anxiety,depression,concerns related to the pandemic,and coping skills in ESRD patients undergoing HD and KT recipients during the COVID-19 *** This cross-sectional study was performed at a training and research *** study included ESRD patients undergoing HD(HD group)and KT recipients(with stable graft function for≥6 mo prior to the study)(KT group).Patients completed a demographics form,the impact of events scale,the hospital anxiety and depression scale,and the Connor-Davidson resilience *** findings at the last clinical follow-up were ***χ^(2)test was used to assess the relationship between the HD and KT groups and the categorical *** relationships between the scale scores were analyzed using Pearson’s correlation test,and differences between the groups were analyzed using the independent groups *** The study included 125 patients,of which 89(71.2%)were in the HD group and 36(28.8%)were in the KT *** levels of anxiety and de

关键词： Kidney transplantation Dialysis Anxiety Depression Psychological resilience

Effects of Sleep Disorders on Hemoglobin Alc Levels in Type 2 Diabetic Patients

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Chinese Medical Journal 2015年第24期128卷 3292-3297页

作者： ahmet Keskin Murat Unalacak Ugur Bilge Pinar Yildiz Seda guler Engin Burak Selcuk Muzaffer Bilgin Department of Family Medicine Yildrinm Beyazit University Faculty of Medicine Ankara Turkey Department of Family Medicine Hacettepe University Faculty of Medicine Ankara Turkey Department of Family Medicine Faculty of Medicine Eskisehir Osmangazi University Eskisehir 9026100 Turkey Department of internal Medicine Faculty of Medicine Eski~ehir Osmangazi University Eskisehir 9026100 Turkey Department of Family Medicine Faculty of Medicine Inonu University Malatya Turkey Department of Biostatistics and Medical Informatics Faculty of Medicine Eskisehir Osmangazi University Fskisehir 9026100 Turkey

Background： Studies have reported the presence of sleep disorders in approximately 50-70% of diabetic patients, and these may contribute to poor glycemic control, diabetic neuropathy, and overnight hypoglycemia. The aim of this study was to determine the frequency of sleep disorders in diabetic patients, and to investigate possible relationships between scores of these sleep disorders and obstructive sleep apnea syndrome （OSAS） and diabetic parameters （fasting blood glucose, glycated hemoglobin Alc [HbA lc], and lipid levels）. Methods： We used the Berlin questionnaire （BQ） for OSAS, the Epworth Sleepiness Scale （ESS）, and the Pittsburgh Sleep Quality Index （PSQI） to determine the frequency of sleep disorders and their possible relationships with fasting blood glucose, HbA I c, and lipid levels. Results： The study included 585 type 2 diabetic patients admitted to family medicine clinics between October and December 2014. Sleep, sleep quality, and sleep scores were used as the dependent variables in the analysis. The ESS scores showed that 54.40% of patients experienced excessive daytime sleepiness, and according to the PSQI, 64.30% experienced poor-quality sleep. The BQ results indicated that 50.20% of patients were at high-risk of OSAS. HbAlc levels correlated significantly with the ESS and PSQI results （r = 0.23, P 〈 0.001 and r = 0.14, P = 0.001, respectively）, and were significantly higher in those with high-risk of OSAS as defined by the BQ （P 〈 0.001 ）. These results showed that HbAlc levels were related to sleep disorders. Conclusions： Sleep disorders are common in diabetic patients and negatively affect the control of diabetes. Conversely, poor diabetes control is an important factor disturbing sleep quality. Addressing sleep disturbances in patients who have difficulty controlling their blood glucose has dual benefits： Preventing diabetic cornplications caused by sleep disturbance and improving diabetes control.

关键词： Hemoglobin A1c Obstructive Sleep Apnea Syndrome Sleep Disorders Type 2 Diabetes Mellitus