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The hydro-abrasive erosion wear behavior of duplex-treated surfaces of AISI H13 tool steel

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Science China(Technological Sciences) 2014年第5期57卷 1040-1051页

作者： TUTAR Mumin AYDIN Hakan DURMUS ali bayram ali YIGIT Kurtulus Department of Mechanical Engineering Faculty of Engineering and Architecture Uludag University

The influence of duplex surface treatments consisting of a DC-pulsed plasma nitriding process and subsequent coatings of CrN and TiAlN deposited by physical vapor deposition(PVD)on AISI H13 tool steel was studied in this *** treated samples were characterized using metallographic techniques,SEM,EDS,and microhardness ***-abrasive erosion wear tests were performed in a specifically designed wear tester in which the samples were rotated in a wear tank containing a mixture of distilled water and ceramic abrasive chips with a fixed rotational *** wear rates caused by the abrasive particle impacts were assessed based on accumulated weight loss *** worn surfaces were also characterized using optical microscopy,SEM,and *** measurements indicated a significant increase in the surface hardness of the duplex-treated *** surfaces of the samples with the TiAlN coating were approximately 15 times harder than that of the untreated samples and 3 times that of the plasma nitrided ***-abrasive erosion wear results showed that the duplex surface treatments,especially the CrN coating,displayed the highest erosion wear resistance.

关键词： plasma nitriding physical vapor deposition duplex surface treatment microhardness hydro-abrasive erosion wear

Success rates for various graft materials in tympanoplasty e A review

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Journal of Otology 2020年第3期15卷 107-111页

作者： ali bayram Nuray Bayar Muluk Cemal Cingi Sameer ali Bafaqeeh Kayseri Training and Research Hospital Department of OtorhinolaryngologyKayseriTurkey Kirikkale University Medical FacultyDepartment of OtorhinolaryngologyKirikkaleTurkey Eskisehir Osmangazi University Medical FacultyDepartment of OtorhinolaryngologyEskisehirTurkey King Saud University Department of OtorhinolaryngologyRiyadhSaudi Arabia

Objectives:The aim of this paper is to review how successful each type of grafts is in ***:Pubmed,Google and the Proquest Central Database at Kırıkkale University were queried using the keywords“graft”,“success”“tympanoplasty”,“success rate”with the search limited to the period 1955 to ***:Various types of graft materials including temporalis fascia,cartilage,perichondrium,periosteum,vein,fat or skin have been used in the reconstruction of tympanic membrane(TM)*** temporalis fascia ensures good hearing is restored,there are significant concerns that its dimensional stability characteristics may lead to residual perforation,especially where large TM perforations are ***“palisade cartilage”and“cartilage island”techniques have been stated to increase the strength and stability of a tympanic graft,but they may result in a less functional outcome in terms of restoring *** habits,the size and site of a perforation,the expertise level of the operating surgeon,age,gender,the status of the middle ear mucosa and the presence of myringosclerosis or tympanosclerosis are all important in determining how successful a graft ***:Although temporal fascia is the most commonly used graft material for tympanoplasty,poor graft stability may cause *** failure is due to the inclusion of connective fibrous tissue containing irregular elastic fibers present in the grafted *** grafts offer better ability to resist infection,pressure,and cope with insufficient vascular *** means that cartilage grafts are suitable for use in revision cases.

关键词： Graft Success Tympanoplasty Success rate

Origin of Dolomitization in Demirkazik Formation(Adana-Turkey)

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Journal of Geoscience and Environment Protection 2017年第6期5卷 135-146页

作者： Cengiz Yetis bayram ali Mert Meryem Yesilot Kaplan Department of Geology Engineering Cukurova UniversityAdanaTurkey Department of Petroleum and Natural Gas Engineering Iskenderun Technical UniversityHatayTurkey

Demirkazık formation consisting of the limestones and dolomites is common in the Adana, Turkey. In this study, it is aimed to find the origin of dolomitization by preparing a detailed geological map. For this purpose, firstly, thin section/polished section and, chemical analysis of the twenty-one samples characterizing dolomitization of the field were prepared and examined. In the chemical analyzes, 21 samples were determined MgO-CaO ratio. Geological map was prepared by field study and MgO contents of the samples that are known coordinates in the chemical data, and the regions where dolomitization was effective were determined. Dolomitization in these carbonates occurs at early stages and late stages. Two dolomite types are petrographically determined;(1) fine crystalline dolomite (TD-1) with 10 - 25 μm crystal size and (2) coarse crystalline dolomite (TD-2) with 50 - 120 μm crystal size. TD-1 is formed by synsedimentary replacement and TD-2 derived from TD-1. The evidence of dolomitization due to pressure changes in the TD-2 dolomites is evidence of late diagenetic. There are three types of carbonate by chemical data;limestone, dolomitic limestone, calcitic dolomite and MgCO3 ratio of these is increased respectively. The rate of dolomitization is very variable and at the fracture regions, the Mg ratio increases, indicating that tectonism is the cause of dolomitization.

关键词： Dolomite Limestone Replacement Dolomitization

Identification and Expression Analysis of Salinity-induced Genes in Rangpur lime(Citrus limonia)

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Horticultural Plant Journal 2020年第5期6卷 267-276页

作者： Mehtap S¸ahin-Çevik bayramÇevik ali Coskan Department of Agricultural Biotechnology Faculty of AgricultureIsparta University of Applied SciencesIsparta 32260Turkey Department of Plant Protection Faculty of AgricultureIsparta University of Applied SciencesIsparta 32260Turkey Department of Soil Science Faculty of AgricultureIsparta University of Applied SciencesIsparta 32260Turkey

Among the economically important horticultural crops,citrus is one of the most vulnerable crops to soil *** lime is more tolerant to high soil salinity than other commonly used citrus ***,the molecular mechanism involved in salinity tolerance has not been explored in Rangpur *** this study,a cDNA library was constructed from leaves of Rangpur lime watered for 30 days with 100mmol·L^−1 NaCl in tap water or tap water using suppression subtractive hybridization(SSH).Two hundred cDNA clones randomly selected from this library were sequenced,and an average of 569 bp was obtained from the majority of ***-six salinity-induced genes,showing 2-to 6-fold increases in their expression levels,were identified by macroarray ***-induced genes were associated with transcription(5.36%),stress response and signaling(21.43%),metabolism(16.07%),transport facilitation(10.71%),photosynthesis(10.71%),protein synthesis and fate(19.64%)and cellular biogenesis(3.57%).Stress response-and signaling-related genes constituted the largest functional group,associated with the production of compatible solutes,regulation of stomatal movement,lipid modification,oxidative stress,antioxidant defense,and stress *** levels of 13 identified genes were induced 1.8-to 3.1-fold,which were validated in salt-treated and untreated Rangpur *** functions of salinity-induced,stress-related genes and their potential roles in salinity tolerance in Rangpur lime were discussed.

关键词： citrus rootstock salt tolerance suppression subtractive hybridization(SSH) gene expression

Frailty significantly impairs the short term prognosis in elderly patients with heart failure

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Journal of Geriatric Cardiology 2018年第11期15卷 675-681页

作者： ali Deniz Caglar Ozmen Ertugrul bayram Gulsah Seydaoglu Ayhan Usal Cukurova University Faculty of Medicine Department of Cardiology Adana Turkey Adana Numune Education and Research Hospital Department of Medical Oncology Adana Turkey Cukurova University Faculty of Medicine Department of Biostatistics AdanaTurkey

Background Frailty is a condition of elderly characterized by increased vulnerability to stressful events with high risk of adverse outcomes. The purpose of this study was to evaluate the association between frailty and adverse outcomes including death and hospitalization due to heart failure in elderly patients. Methods We included patients aged ≥ 65 years with the diagnosis of heart failure. The clinical and laboratory data, echocardiography and ECGs were recorded. Additionally, the frailty scores of the patients were evaluated according to Canadian Study of Health and Aging. All the patients were divided as frail or non-frail. The groups were compared for their characteristics and the occurrence of clinical outcomes. Results We included 86 eligible patients. The median follow-up time was four months. The mean age was 75 ± 6.5 years. Of these 86 patients, 17 (19.7%) patients encountered an event (death and/or hospitalization). Nine patients (10.4%) died during follow-up. Thirty patients (34.9%) were considered frail. Among the demographic, clinical and laboratory data, only total protein and albumin levels were found to be lower in frail patients (total protein level: 6.8 ± 0.6 g/dL in non-frails, 6.5 ± 0.9 g/dL in frails, P = 0.05;albumin level: 3.8 ± 0.4 g/dL in non-frails, 3.4 ± 0.6 g/dL in frails, P = 0.001). In multivariate analysis, frailty was found to be strongly associated with clinical outcomes in short term. Conclusions Being frail in an elderly heart failure patient is associated with death and/or hospitalization due to heart failure in short term. Therefore, frailty score should be evaluated for all elderly heart failure patients as a prognostic marker.

关键词： Death Frailty Heart failure Hospitalizations

Iloprost inhibits fracture repair in rats

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Chinese Medical Journal 2014年第16期127卷 2960-2965页

作者： ali Dogan Fatih Duygun A. Murat Kalender Irfan bayram Ibrahim Sungur Department of Orthopedics and Traumatology Education andResearch HospitalAntalya Turkey Department of Orthopedics and Traumatology Sutcu ImamUniversity School of Medicine Kahramanmaras Turkey Department of Pathology Yuzuncu Yil University School ofMedicine Van Turkey Department of Orthopedics and Traumatology Haseki Education and Research Hospital Istanbul Turkey

Background Previous studies have shown that prostaglandins （PGs） dramatically stimulate healing processes in ***,the effect of prostaglandin l2 （PGI2） on fracture healing remains *** investigate the effect of PGI2,a study on fracture healing process in closed tibia fractures was *** Thirty-six Sprague-Dawley male rats were randomized into two *** the first day,their right tibias were fractured by three-point bending *** study group （n=18） received a single injection of 10 μg/kg iloprost for 5 days,while the control group （n=18） received saline solution in the same *** the 7th,14th and 28th days following the fracture,six rats were sacrificed and their right legs were harvested in each *** progression of fracture healing was assessed for each specimen by the scores of radiography （by Lane-Sandhu） and histology （by Huo et al）.Results On the 7th day,the radiographic and histologic scores were *** the 14th day radiographic total score was 6 and histologic total score was 23 in the iloprost group,whereas radiographic total score was 11 and histologic total score was 33 in the control *** the 14th day radiographic and histologic scores were significantly decreased in the iloprost group compared to the control group （P 〈0.05）.On the 28th day radiographic total score was 12 and histologic total score was 37 in the iloprost group,whereas radiographic total score was 15 and histologic total score was 40 in the control *** the 28th day although there was a decrease in radiographic and histologic scores of the iloprost group acording to control group,it was not statistically significant （P 〉0.05）.Conclusion Iloprost delays fracture healing in early stage in rats.

关键词： epoprostenol iloprost fracture healing bone rats prostaglandin I2

Effects of primary suture and fibrin sealant on hemostasis and liver regeneration in an experimental liver injury

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World Journal of Gastroenterology 2008年第1期14卷 81-84页

作者： Arif Hakan Demirel Ozgur Taylan Basar ali Ulvi Ongoren Erkut bayram Mustafa Kisakurek 2~(nd) Department of General Surgery Ministry of Health Ankara Training and Research Hospital Ankara 06120 Turkey 5~(th) Department of General Surgery Ministry of Health Ankara Training and Research Hospital Ankara Turkey

AIM: To investigate the effects of fibrin sealant on hemostasis and liver regeneration and intra-abdominal adhesions in an experimental liver injury. METHODS: Thirty-six Wistar rats were randomly divided into primary suture group (n = 15), fibrin sealant group (n = 15) and control group (n = 6). A wedge resection was performed on the left lobe of the liver. In primary suture group, liver was sutured using polypropylene material, while fibrin glue was administrated on the liver surface in fibrin sealant group. RESULTS: More intra-abdominal adhesions were observed in the primary suture group compared to the fibrin sealant group on 3rd (2.50 ± 0.5 vs 0.25 ± 0.5, P = 0.015), 10th (2.75 ± 0.5 vs 0.50 ± 0.6, P = 0.06) and 20th (1.75 ± 0.5 vs 0.70 ± 0.5, P = 0.015) postoperative days. Histopathological scores were better in the fibrin sealant group in comparison with the primary suture group on 3rd (8.75 ± 0.5 vs 6.75 ± 0.5, P = 0.006), 10th (7.50 ± 1.0 vs 5.5 ± 0.6, P = 0.021) and 20th (6.40 ± 1.7 vs 3.20 ± 1.6, P = 0.025) postoperative days. CONCLUSION: Out data suggest that fibrin sealant is preferred over primary suture in appropriate cases including liver trauma since it causes less intra-abdominal adhesions while allowing shorter hemostasis time as assessed in experimental liver trauma.

关键词： Liver Trauma Fibrin sealant Hemostasis Regeneration

Association of inflammation with atrial fibrillation in hyperthyroidism

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Journal of Geriatric Cardiology 2012年第4期9卷 344-348页

作者： Mehmet Ozaydin ali Kutlucan Yasin Turker Banu Koroglu Akif Arslan bayram A. Uysal Dogan Erdogan Ercan Varol Abdullah Dogan Department of Cardiology Suleyman Demirel University Kurtulus Mah 122. cad. Hatice Halici apt. no: 126 32040 Isparta Turkey Department of Internal Medicine Gulkent Hospital Atatürk Blv 10432 32200 Sanayi Isparta Turkey Department of Cardiology Gulkent Hospital Atatürk Blv 10432 32200 Sanayi Isparta Turkey

The aim of this studywas to evaluate the relationship between inflammation and development of atrial fibrillation (AF) in patients with *** A total of 65 patients with newly diagnosed hyperthyroidism, 35 of whom were in sinus rhythm and 30 of whom in AF. Thirty five age- and gender-matched patients in a control group were included in the study. Factors associated with the development of AF were evaluated by multivariate regression analysis. Results Factors associated with AF in multivariate analysis included high sensitivity C reactive protein (HsCRP) [odds ratio (OR): 11.19; 95% confidence interval (95% CI): 1.80–69.53; P = 0.003],free T4 (OR: 8.76; 95% CI: 2.09–36.7; P = 0.003), and left atrial diameter (OR: 1.25; 95% CI: 1.06–1.47; P = 0.008). Conclusions The results of the present study suggest that HsCRP, an indicator of inflammation, free T4 and left atrial diameter are associated with the development AF in patients with hyperthyroidism.

关键词： Atrial fibrillation Hyperthyroidism Inflammation

Rates and associates of influenza and pneumococcus vaccination in diabetes mellitus:A nationwide cross-sectional study(TEMD vaccination study)

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World Journal of Diabetes 2021年第12期12卷 2107-2118页

作者： Ibrahim Demirci Cem Haymana Serpil Salman Ilker Tasci Demet Corapcioglu ali Kirik İlhan Yetkin Mustafa Altay Tevfik Sabuncu Fahri bayram Ilhan Satman Alper Sonmez 无 Department of Endocrinology and Metabolism Gulhane Training and Research HospitalAnkara 06190Turkey Department of Endocrinology and Metabolism Liv HospitalIstanbul 34000Turkey Department of Internal Medicine University of Health SciencesGulhane Faculty of MedicineAnkara 06018Turkey Department of Endocrinology and Metabolism Ankara UniversityFaculty of MedicineAnkara 06560Turkey Department of Internal Medicine Balıkesir UniversityFaculty of MedicineBalikesir 10145Turkey Department of Endocrinology and Metabolism Gazi UniversityFaculty of MedicineAnkara 06190Turkey Department of Endocrinology and Metabolism Kecioren Training and Research HospitalAnkara 06190Turkey Department of Endocrinology and Metabolism Harran UniversityFaculty of MedicineSanliurfa 63050Turkey Department of Endocrinology and Metabolism Erciyes UniversityFaculty of MedicineKayseri 38000Turkey Department of Endocrinology and Metabolism Istanbul UniversityFaculty of MedicineIstanbul 34000Turkey Department of Endocrinology and Metabolism University of Health SciencesGulhane Faculty of MedicineAnkara 06190Turkey TEMD Study Group

BACKGROUND Vaccination against influenza and pneumococcus is effective in reducing morbidity and mortality in patients with *** To investigate the prevalence of influenza and pneumococcal vaccinations and to search for the independent associates of vaccination in Turkish patients with *** In this cross-sectional,nationwide,multicenter study,adult patients with type 1 diabetes(T1DM)(n=454)and type 2 diabetes(T2DM)(n=4721),who were under follow-up for at least a year in the outpatient clinics,were consecutively ***,clinical,and laboratory parameters of patients were *** histories were documented according to the self-statements of the *** Patients with T1DM and T2DM had similar vaccination rates for influenza(23.6%vs 21.2%;P=0.240)and pneumococcus(8%vs 7%;P=0.451)*** diabetes duration and older age were the common independent associates of having vaccination for both types of diabetes *** education level,using statin treatment,and having optimal hemoglobin A1c levels were the common independent associates of influenza and pneumococcal vaccination in patients with *** TEMD Vaccination Study shows that patients with T1DM and T2DM had very low influenza and pneumococcal vaccination rates in *** lower rates of vaccination in certain populations urges the necessity of nationwide vaccination strategies targeting these populations.

关键词： Diabetes Influenza Pneumococcus Vaccination Type 1 diabetes Type 2 diabetes