166 results on '"Murat Tunc"'
Search Results
2. Zinc outperforms other foliar fertilisers in enhancing lentil yield and harvest index in semi-arid regions
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Abdullah Kahraman, Murat Tunc, Emrah Ramazanoglu, Vasan Almarie, Ramazan Sezer, Fatma Basdemir, Cengiz Kaya, and Mehmet Senbayram
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Grain yield ,harvest index ,micronutrients ,nitrogen ,translocation ,Plant culture ,SB1-1110 - Abstract
Lentil yield in semi-arid regions is limited by heat, drought stress and nutrient deficiencies induced by high soil pH and water scarcity. In this study, we investigated the effect of foliar fertiliser treatments on lentil yield and yield components in a semi-arid region of South-East Anatolia, Türkiye. The control treatment and six foliar treatments were as follows: (i) Control: non-amended control, (ii) Zn: zinc sulphate, (iii) K: potassium sulphate, (iv) Zn + K (zinc sulphate + potassium sulphate), (v) Flo: Florea-UPL (containing boron and molybdenum), (vi) Mac: Macarena-UPL, an organomineral foliar fertiliser and (vii) Flo + Mac. Foliar fertilisers were applied at the first blooming stage of field-grown lentils. Total biomass yield was largely unaffected across treatments except in the K treatment. However, foliar Zn supply was the only treatment that significantly increased grain yield (55% higher), harvest index and total grain N uptake compared to the control, likely due to enhanced translocation of nitrogen-containing assimilates. SPAD values and total N analysis showed that stover N content depleted more rapidly in the Zn treatment than in other treatments during the grain-filling phase. The tested commercial products slightly increased SPAD values, biomass and grain yield. Among the treatments, Zn, as a foliar fertiliser, was the most cost-effective solution for improving grain yield in this region.
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- 2024
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3. Evaluation of the Possibility of Using Fuzzy C-Means Clustering, AMMI Analysis and GGE Biplot Methods to Predict the Yield of Chickpea Genotypes Cultivated in Different Environments
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Murat Tunc, Süreyya Betül Rufaioglu, Sibel Ipekesen, Murat Yakar, Levent Yorulmaz, and Behiye Tuba Bicer
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fuzzy C-means clustering ,GGE biplot ,AMMI biplot ,chickpea ,yield ,Agriculture - Abstract
The purpose of this study was to evaluate the potential of using fuzzy C-means clustering, AMMI and GGE biplot analysis methods to predict the yield of chickpea (Cicer arietinum L.) genotypes grown in various environments. The trials were conducted in the Central, Silvan and Hazro districts of Diyarbakir province and Kiziltepe district of Mardin province in the Southeastern Anatolia Region of Türkiye. During the 2016 growing season, 19 chickpea genotypes were tested across four distinct environments. Multiple location experiments were used to assess the genotypes’ performance and stability. The study employed a two-factor experimental design in randomized blocks with four replications in each environment. As a result, the genotype FLIP98-206C showed the highest performance for yield (1727.3 kg ha−1) at the Diyarbakır location among all locations. On the other hand, the Diyar-95 variety showed the lowest yield (723.5 kg ha−1) at the Hazro location among all locations. The Diyarbakir location was determined as an ideal test environment for genotype selection in fuzzy C-means clustering, AMMI and GGE biplot analysis. The Silvan region was determined as the weakest environment for this purpose. It is considered that the determination of genotypes with high yield and stability in this research, in which different analysis methods were used in combination, will contribute to agricultural production.
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- 2025
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4. Unilateral Multiple Evanescent White Dot Syndrome-Like Reaction Following the CyberKnife Stereotactic Radiotherapy for Choroidal Malignant Melanoma
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Seher Köksaldı, Murat Tunc, and Ali Osman Saatci
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choroidal malignant melanoma ,cyberknife stereotactic radiotherapy ,dexamethasone implant ,fluorescein angiography ,multiple evanescent white dot syndrome ,Medicine ,Ophthalmology ,RE1-994 - Abstract
A 58-year-old otherwise healthy man received a diagnosis of choroidal malignant melanoma (CMM) in June 2021 and underwent a single session of (21 Gy) CyberKnife stereotactic radiotherapy (SRT). Eleven months later, we noticed 3+ anterior chamber cells with occasional vitreous cells in the left eye. Though the tumor looked regressed, there were mild optic disc leakage, early hypofluorescent and late hyperfluorescent punctate lesions scattered 360 degrees, and late staining of the mass on fluorescein angiogram. The findings were compatible with a unilateral multiple evanescent white dot syndrome (MEWDS)-like reaction that was most likely related to CyberKnife SRT-induced tumor necrosis, and a dexamethasone implant was administered intravitreally into the left eye together with topical steroids. A second intravitreal injection of dexamethasone was given three months later due to remittance of the angiographic features. As there are only a few reports on CyberKnife SRT for the treatment of CMM, we wanted to share our interesting observation of a post-treatment MEWDS-like reaction likely related to tumor necrosis syndrome with the ophthalmic community.
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- 2023
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5. Development- and Validation-Improved Metrological Methods for the Determination of Inorganic Impurities and Ash Content from Biofuels
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Camelia Stratulat, Raluca Elena Ginghina, Adriana Elena Bratu, Alper Isleyen, Murat Tunc, Katarina Hafner-Vuk, Anne Mette Frey, Henrik Kjeldsen, and Jochen Vogl
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development ,validate method ,biodiesel ,ICP-MS ,ICP-OES ,MW-AES ,Technology - Abstract
In this study, five laboratories, namely, BRML (Romania), TUBITAK UME (Turkey), IMBIH (Bosnia and Herzegovina), BAM (Germany), and DTI (Denmark), developed and validated analytical procedures by ICP-MS, ICP-OES, MWP-AES, WD-XRF, and ID-MS for the determination of inorganic impurities in solid and liquid biofuels, established the budget of uncertainties, and developed the method for determining the amount of ash in the measurement range 0–1.2% with absolute repeatability less than 0.1% and absolute reproducibility of 0.2% (according to EN ISO 18122). In order to create homogeneous certified reference materials, improved methodologies for the measurement and characterization of solid and liquid biofuels were developed. Thus, information regarding the precision, accuracy, and bias of the method, and identifying the factors that intervened in the measurement of uncertainty were experimentally determined, supplementing the information from the existing standards in the field.
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- 2023
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6. Prospective evaluation of complications in laparoscopic urology at a mid-volume institution using standardized criteria: Experience of 1023 cases including learning curve in 9 years
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Oner Sanli, Tzevat Tefik, Selcuk Erdem, Mazhar Ortac, Emre Salabas, Serkan Karakus, Baris Yucel, Abubekir Boyuk, Tayfun Oktar, Faruk Ozcan, Necdet Aras, Murat Tunc, and Ismet Nane
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Complications ,laparoscopy ,urology ,Surgery ,RD1-811 ,Diseases of the digestive system. Gastroenterology ,RC799-869 - Abstract
Aim: To evaluate the laparoscopic operations performed in our department according to the modified Clavien classification system of complications. Materials and Methods: Between September, 2005 and February, 2014, a total of 1023 laparoscopic cases were performed. This period was divided into three terms (Terms 1, 2 and 3 consisting of 38, 32 and 32 months, respectively). According to the European Scoring System (ESS), easy (E), slightly difficult (SD), fairly difficult (FD), difficult (D), very difficult (VD) and extremely difficult (ED) cases were 35, 88, 170, 390, 203 and 137, respectively. The perioperative complications were evaluated based on the 3 time periods, with a specific emphasis on determining the learning curve according to the modified Clavien classification system of complications. Results: A total of 236 (23.1%) complications were observed according to the modified Clavien classification. The minor (Clavien I-II) and major (Clavien III, IV and V) complication rates were 20.5% (n = 210) and 2.4% (n = 26), respectively. Clavien I was the most frequently encountered type of complication (n = 120, %11.7). No significant difference was observed among all 3 time periods regarding total complication rates. The D cases had the highest complication rate compared to E, SD, FD, VD and ED cases among all three terms. The total number of complications increased significantly with increasing grade of technical difficulty according to the ESS. Conclusion: Complications encountered in our laparoscopic surgery experience were predominantly minor, and the rate of complications was not significantly increased during the learning curve. The present data can provide guidance and manage expectations for surgeons introducing laparoscopy into their practice.
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- 2016
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7. Use of a combined retroperitoneoscopic and transperitoneal laparoscopic technique for the management of renal cell carcinoma with level I tumor thrombi
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Oner Sanli, Tzevat Tefik, Selcuk Erdem, Tayfun Oktar, Murat Tunc, and Faruk Ozcan
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Kidney ,laparoscopy ,retroperitoneoscopy ,thrombus ,vena cava ,Surgery ,RD1-811 ,Diseases of the digestive system. Gastroenterology ,RC799-869 - Abstract
Background: To report our initial experiences using a combined retroperitoneoscopic and transperitoneal laparoscopic technique for the management of renal cell carcinoma with level I tumor thrombi. Materials and Methods: Two patients underwent this technique for tumors 11- and 13-cm in diameter. After transection of the renal artery with limited mobilization of the kidney using a retroperitoneoscopic approach, additional ports were placed, and the management of the tumor thrombus was performed in the large working space provided by the transperitoneoscopic approach. Results: The technique was feasible in the present 2 cases. The total operative times were 170 and 200 min, respectively. The estimated blood loss was 450 cc in the first case and 200 cc in the second case. No complications were observed in either of the patients. Conclusions: Based on the initial clinical experience, we have presented a feasible surgical option for the laparoscopic management of renal cell carcinoma with level I thrombi.
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- 2013
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8. Primary Urethral Plasmacytoma: a Case Report and Literature Review
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Ozgur Gokce, Omer Acar, Murat Tunc, Isin Kilicaslan, Tarik Esen, and Faruk Ozcan
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extramedullary plasmacytoma ,multiple myeloma ,radiotherapy ,urethra ,Medicine (General) ,R5-920 - Abstract
Plasmacytomas of the urethra are extremely rare neoplasias; they may occur as isolated tumors or concomitantly with generalized multiple myeloma. Herein, we describe the clinical presentation and characteristics of a patient with primary plasmacytoma of the urethra. A 51-year-old man presented with terminal hematuria and a palpable penile mass. Magnetic resonance urethrography revealed a 3-cm long stenotic segment along which the urethral mucosa was found to be irregular. On urethroscopy, papillary mucosal projections extending to the presphincteric area were noted. Lesions were found to be composed primarily of neoplastic plasma cells capable of producing mainly lambda light chain. Upon diagnosis, the patient received external beam radiation therapy targeting the pelvic region. The lesion diminished in size progressively during the treatment course. He was disease-free after 6 months. Although it is a relatively rare disease, primary urethral plasmacystoma should be considered in the differential diagnosis of urethral tumors and radiation therapy should be an integral part of the treatment strategy.
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- 2008
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9. Relation between platelet indices and branch retinal vein occlusion in hypertensive patients
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Halil Ibrahim Onder, Ali Cagri Kilic, Murat Kaya, Serkan Bulur, Elif Onder, and Murat Tunc
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Ampiginous choroiditis ,fluorescein angiography/fluorescein angiogram ,indocyanine green angiogram ,multifocal choroiditis ,posterior uveitis ,serpiginous choroiditis ,Branch retinal vein occlusion ,mean platelet volume ,platelet activation ,retinal vein occlusion ,Ophthalmology ,RE1-994 - Abstract
Backgroud: Branch retinal vein occlusion (BRVO) is the second most common retinal vascular disease after diabetic retinopathy. To date, the studies were unable to elucidate the mechanism of the thrombosis leading to the entity; particularly the relation between thrombocyte aggregation and retinal vein occlusion is still unclear. Mean platelet volume (MPV) is a determinant of rate of platelet production and activation, both of which are indices of function of platelets. The relation between MPV and BRVO has not been studied before. The aim was to evaluate MPV in BRVO. Materials and Methods: Forty patients were included in the study. Forty six age and sex matched hypertensive volunteers were recruited as the control group. Results: MPV values were significantly higher in BRVO patients compared with the control subjects (8.01 ± 0.79vs 7.52 ± 0.32fL, respectively; P < 0.001). Conclusion: MPV is significantly higher in patients hypertensive BRVO patients and further investigations regarding its potentially use as a prognostic biomarker in patients with BRVO are needed.
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- 2013
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10. Prostate Cancer: All Aspects
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Ahmet Tefekli, Murat Tunc, Volkan Tugcu, and Tarık Esen
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Technology ,Medicine ,Science - Published
- 2013
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11. Future Prospects in the Diagnosis and Management of Localized Prostate Cancer
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Ahmet Tefekli and Murat Tunc
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Technology ,Medicine ,Science - Abstract
Prostate cancer (PCa) is the commonest visceral cancer in men worldwide. Introduction of serum PSA as a highly specific biomarker for prostatic diseases has led to a dramatic increase in the diagnosis of early stage PCa in last decades. Guidelines underline that benefits as well as risks and squeals of early diagnosis and treatment should be discussed with patients. There are several new biomarkers (Pro-PSA, PCA-3 test, and TMPRSS2-ERG) available on the market but new ones are awaited in order to improve specificity and sensitivity. Investigators have also focused on identifying and isolating the gene, or genes, responsible for PCa. Current definitive treatment options for clinically localized PCa with functional and oncological success rates up to 95% include surgery (radical prostatectomy), external-beam radiation therapy, and interstitial radiation therapy (brachytherapy). Potential complications of overdiagnosis and overtreatment have resulted in arguments about screening and introduced a new management approach called “active surveillance.” Improvements in diagnostic techniques, especially multiparametric magnetic resonance imaging, significantly ameliorated the accuracy of tumor localization and local staging. These advances will further support focal therapies as emerging treatment alternatives for localized PCa. As a conclusion, revolutionary changes in the diagnosis and management of PCa are awaited in the near future.
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- 2013
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12. Market Responses to Genuine Versus Strategic Generosity: An Empirical Examination of NFT Charity Fundraisers.
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Chen Liang, Murat Tunc, and Gordon Burtch
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- 2024
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13. Optimization of Hydropower Plants’ Tailwater Energy: A Case Study for 317 MW Adana Sanibey Dam, Turkey
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Murat Tunc, K. M., Sisbot, Sedat, Ozbek, Muammer, Oral, Ahmet Yavuz, editor, and Bahsi Oral, Zehra Banu, editor
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- 2017
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14. Direct air capture system: a feasibility study for Izmir
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K.M. Murat Tunc, Levon Cagla, Mustafa Kasikci, Rafet Yagiz Caliskan, and Zeynep Korkmaz
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Fluid Flow and Transfer Processes ,General Energy ,Fuel Technology ,Renewable Energy, Sustainability and the Environment ,Process Chemistry and Technology - Published
- 2022
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15. Effects of cow manure and liquid vermicompost applications on growth and seed yield of dry beans
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Fatma Basdemir, Sibel Ipekeşen, Seval Elis, murat Tunc, and B.Tuba Bicer
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Inorganic Chemistry ,Ecology ,Health, Toxicology and Mutagenesis ,Pollution - Published
- 2022
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16. Ascorbic acid enhances growth and dualex parameters in Arachis hypogaea L. under salt stress
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Ruveyde Tunçtürk, Erol Oral, Murat Tunçtürk, Lütfi Nohutçu, Solmaz Najafi, Younes Rezaee Danesh, Beatrice Farda, and Loretta Pace
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Abiotic stress ,Salinity mitigation ,Antioxidant compounds ,Biostimulation ,Fertilization reducing ,Environmental sciences ,GE1-350 - Abstract
Abstract Salt stress limits crop productivity in arid and semi-arid regions, posing a significant challenge to agricultural sustainability. This study investigates the potential of ascorbic acid (AA) to alleviate the harmful effects of sodium chloride (NaCl) in Arachis hypogaea L. by applying AA concentrations of 0, 100, 200, and 300 ppm and NaCl levels of 100 and 200 mM under controlled conditions. Results showed that the application of 300 ppm AA under 200 mM NaCl notably mitigated salt-induced reductions, enhancing stem and root lengths by 33% and 14% and increasing stem fresh and dry weights by 67% and 39%, respectively. Comparative analysis showed a 3% decrease in plant temperature, a 56% increase in leaf area, and a 59% reduction in malondialdehyde, underscoring AA’s protective effects. Although not all measured parameters responded significantly to AA under salt stress, these findings highlight the compound’s potential to counteract growth reductions in A. hypogaea, demonstrating its value for sustainable agricultural practices under saline conditions.
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- 2024
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17. CyberKnife Stereotactic Radiotherapy in Secondary Vasoproliferative Tumor of the Retina
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Sefik Can Ipek, Kaan Oysul, Murat Tunc, Aylin Yaman, and Ali Osman Saatci
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medicine.medical_specialty ,medicine.medical_treatment ,Vasoproliferative tumor of the retina ,Retinoschisis ,Case Report ,Radiosurgery ,Lesion ,Stereotactic radiotherapy ,chemistry.chemical_compound ,Cyberknife ,medicine ,Dexamethasone ,Retina ,business.industry ,Retinal ,RE1-994 ,medicine.disease ,Ophthalmology ,medicine.anatomical_structure ,chemistry ,Radiology ,medicine.symptom ,business ,X-linked retinoschisis ,medicine.drug - Abstract
A 16-year-old boy with X-linked retinoschisis was examined for the visual decline on his left eye. Upon examination, a vasopermeable elevated mass lesion was determined at the lower temporal retinal periphery associated with surrounding arc-like hard exudates which is consistent with a vasoactive proliferative tumor of the retina. After discussing the therapeutic options with the patient and his parents, 3 successive dexamethasone implants 6 months apart were administered. As no satisfactory regression was noticed, CyberKnife stereotactic radiosurgery (SRS) was performed. Regression of the exudative tumor was obtained in follow-up examinations at 12 and 24 months after the SRS session and the thickness of the lesion was markedly reduced.
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- 2021
18. Implementation and assessment of computer integrated manufacturing in systems engineering education.
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Sedat Sisbot, Murat Tunc, and ünal çamdali
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- 2010
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19. Optimization of Hydropower Plants’ Tailwater Energy: A Case Study for 317 MW Adana Sanibey Dam, Turkey
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Murat Tunc, K. M., primary, Sisbot, Sedat, additional, and Ozbek, Muammer, additional
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- 2016
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20. Yeditepe University computer integrated manufacturing studies.
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Sedat Sisbot, Murat Tunc, ünal çamdali, and Yucel Turkkan
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- 2009
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21. Minerals, vitamins, protein and amino acids in wild Cicer species and pure line chickpea genotypes selected from a local population
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Sibel Ipekeşen, Fatma Basdemir, murat Tunc, and B.Tuba BİCER
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Inorganic Chemistry ,Ecology ,Health, Toxicology and Mutagenesis ,Pollution - Published
- 2022
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22. Forecasting annual natural gas consumption using socio-economic indicators for making future policies
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Doruk Sen, K. M. Murat Tunc, and M. Erdem Günay
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Consumption (economics) ,business.industry ,Natural resource economics ,020209 energy ,Mechanical Engineering ,02 engineering and technology ,Building and Construction ,Standard of living ,Nuclear power ,Pollution ,Industrial and Manufacturing Engineering ,Gross domestic product ,General Energy ,Electricity generation ,020401 chemical engineering ,Work (electrical) ,Natural gas ,Range (aeronautics) ,0202 electrical engineering, electronic engineering, information engineering ,Environmental science ,0204 chemical engineering ,Electrical and Electronic Engineering ,business ,Civil and Structural Engineering - Abstract
Natural gas is a foreign-dependent source of energy in many countries and a rapid increase of its consumption is mainly associated with the increase of living standards and needs. In this work, Turkey was taken as a case study with high degree of foreign dependence of energy, and the future natural gas consumption was predicted by several different multiple regression models using socio-economic indicators as the descriptor variables. Among these, gross domestic product and inflation rate were found to be the only significant ones for this prediction. Next, three different projections for the future values of the significant descriptor variables were tested, and the natural gas consumption was predicted to rise gradually in the range 1.3 ± 0.2 billion m3 per year reaching to a consumption of 64.0 ± 3.5 billion m3 in the year 2025. It was then discussed that this additional natural gas can be compensated by utilizing local lignite sources or by starting a nuclear energy program although these two methods to reduce the future natural gas consumption have some conflictions with the general European energy matrix and environmental politics. Thus, it was concluded that resuming the wind and solar-based electricity generation programs can be considered as a more reasonable option.
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- 2019
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23. Comparison of anxiety, pain, and quality of life in individuals with mild or moderate malocclusion between conventional fixed orthodontic treatment versus Invisalign: a randomised clinical trial
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Yasemin Tunca, Yesim Kaya, Murat Tunca, and Sıddık Keskin
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Clear aligner ,Anxiety ,Pain ,Quality of Life ,Dentistry ,RK1-715 - Abstract
Abstract Background We evaluated anxiety, pain, and oral-health-related quality of life in individuals treated with conventional fixed appliances (Group A) and clear aligners (Group B) for moderate malocclusion during the initial phase of orthodontic treatment. Methods Sixty individuals, separated into Group A (n = 30) and Group B (n = 30), were included in the study. They completed the Anxiety Levels, Oral Health Impact Profile-14, and Oral Health Related Quality of Life - United Kingdom/Surveys after the application of attachments on days 0 (T1), 10 (T10), and 20 (T20). Their pain levels were evaluated with the Visual Analogue Scale on days 0, 2, and 6 in the 2nd and 6th hours and on the 1st, 3rd, 7th, 14th, and 21st days. Results Per the VAS questionnaire, pain levels in the 2nd hour, 6th hour, 1st day, and 3rd day were significantly lower in Group B than in Group A. In the OHIP-14 survey results, the comparison between Group A and Group B showed a significant difference only on the 1st day. The STAI and OHRQoL-UK survey results did not differ significantly between the groups. Conclusions We found no significant difference between the two groups in terms of anxiety levels, and pain among individuals in Group A was higher than in Group B only at the beginning of the treatment. No significant differences were observed in terms of individuals’ quality of life. Trial registration NCT06133296 (retrospectively registered)- Registration Date:15/11/2023.
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- 2024
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24. The association between variant urothelial histologies, pathological stage and disease specific survival in patients with bladder cancer
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Murat Tunc, Abubekir Boyuk, Tzevat Tefik, Oner Sanli, Yasemin Ozluk, Faruk Özcan, Isin Kilicarslan, and Selcuk Erdem
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medicine.medical_specialty ,Bladder cancer ,business.industry ,Histology ,medicine.disease ,Gastroenterology ,Exact test ,Dissection ,medicine.anatomical_structure ,Internal medicine ,medicine ,Stage (cooking) ,business ,Urooncology ,Lymph node ,Pathological ,Survival analysis - Abstract
Objective We aimed to compare the oncological outcomes of patients with variant urothelial histologies (VH) with pure urothelial histology (PUH) in bladder cancer (BC) patients. Material and methods This study includes 223 patients who underwent radical cystectomies (RCs) between September 2006 and July 2016 with complete follow-up data A retrospective screening was performed to identify the patients with PUH and VH. The primary outcomes of interest were pathological stage of disease at RC and disease-specific survival (DSS). For comparison of categorical variables, Fisher's exact test and Pearson chi- square and for continuous variables Wilcoxon rank-sum and Mann-Whitney U tests were used. Kaplan-Meier (KM) method was used for survival analysis and log-rank test was used for comparison of survival rates. Predictors of survival were detected with mulitivariable Cox-proportional hazards model including the variables such as gender, age, existence of VH, lymph node dissection (LND) type and pathological stage of the disease. Results A moderate-degree correlation was detected between VH and pathological stages of RC (r=0.45, p
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- 2018
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25. Forecasting electricity consumption of OECD countries: A global machine learning modeling approach
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K. M. Murat Tunc, M. Erdem Günay, and Doruk Sen
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Consumption (economics) ,Sociology and Political Science ,Accurate estimation ,business.industry ,020209 energy ,Public policy ,02 engineering and technology ,Oecd countries ,Energy consumption ,010501 environmental sciences ,Management, Monitoring, Policy and Law ,Development ,Machine learning ,computer.software_genre ,01 natural sciences ,0202 electrical engineering, electronic engineering, information engineering ,Artificial intelligence ,National trends ,Electricity ,Business and International Management ,business ,computer ,0105 earth and related environmental sciences - Abstract
Electricity is a critical utility for social growth. Accurate estimation of its consumption plays a vital role in economic development. A database that included past electricity consumption data from all OECD countries was prepared. Since national trends may be transferable from one country to another, the entire database was modeled and simulated via machine learning techniques to forecast the energy consumption of each country. Understanding similarities among the profiles of different countries could increase predictive accuracy and improve associated public policies.
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- 2021
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26. Increase in transaminase levels during COVID-19 infection and its association with poor prognosis
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Oguz Kagan Bakkaloglu, Ugur Onal, Tugce Eskazan, Enes Ali Kurt, Selcuk Candan, Ridvan Karaali, Sermin Borekci, Seval Urkmez, Yalim Dikmen, Fehmi Tabak, Murat Tuncer, and Ibrahim Hatemi
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Medicine - Published
- 2023
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27. Molecular Pathological Markers and TERT Promoter Mutations: Correlations with Clinicopathological Features and Distant Metastasis in Turkish Patients with Papillary Thyroid Carcinoma
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Ezgi Yılmaz, Gaye Güler, Olcay Kurtulan, Jale Karakaya, Tuğçe Telli, Murat Tuncel, and Alper Gürlek
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Diseases of the endocrine glands. Clinical endocrinology ,RC648-665 - Published
- 2023
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28. Analysis of the thermalization dynamics of two-layer thin films irradiated by femtosecond laser
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Fatma Bayata, K. M. Murat Tunc, and M. Erdem Günay
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Materials science ,business.industry ,Physics::Optics ,02 engineering and technology ,Electron ,021001 nanoscience & nanotechnology ,Laser ,01 natural sciences ,Atomic and Molecular Physics, and Optics ,Electronic, Optical and Magnetic Materials ,law.invention ,010309 optics ,law ,0103 physical sciences ,Femtosecond ,Nano ,Optoelectronics ,Electron temperature ,Laser power scaling ,Irradiation ,Electrical and Electronic Engineering ,Thin film ,0210 nano-technology ,business - Abstract
In this work, ultrafast thermalization dynamics was examined for a variety of two layer-thin films (Au/Si, Au/Ni, Au/W, Au/Al and Au/Pb). Non-equilibrium energy transport under laser irradiation was formulated for the electron and lattice sub-systems of the thin films. A significant reduction in the temperature of the electron and the lattice of the gold surface was observed especially for Au/Si and Au/Ni thin films due to their large G values. Next, the effects of laser power intensity and laser heating duration on the temperature distributions were examined for Au/Ni two-layer thin film. It was found that, as the laser intensity increased, the maximum electron temperature increased dramatically; on the other hand, as the pulse heating duration increased, the electron temperature gradually decreased. It was then concluded that thermal damage threshold of the gold surface can be improved by depositing gold layer on a substrate material with high electron-phonon coupling factor. Hence the thermal failure of thin films used in optical components of ultrafast laser systems or micro/nano electro mechanical systems can be prevented.
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- 2020
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29. Optimum Turbine Number and Data Determination for Short Term Wind Power Forecasting in Complex Terrains: A case study in Turkey
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Iskender Kayabasi, Adil Han Orta, and Murat Tunc
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Wind power ,Power station ,Meteorology ,business.industry ,020209 energy ,Wind power forecasting ,02 engineering and technology ,Wind direction ,Numerical weather prediction ,Turbine ,Wind speed ,Term (time) ,0202 electrical engineering, electronic engineering, information engineering ,Environmental science ,business - Abstract
Bandirma power plant with an average altitude of 500 m is located at 3 km away from Marmara Sea. The farm has 29 wind turbines placed at intervals ranging from 300 m to 1 km. Short term (up to 48 hours) wind power forecasting is very difficult in complex terrains, due to sea-land interaction and wake interactions between turbines. Additionally, intervals between turbines are very small for mesoscale Numerical Weather Prediction (NWP) models. The purpose of this study is to develop a methodology to forecast short term wind power from the minimum number of input and to determine which turbines should be selected for NWP models in the Bandirma power plant. To predict the power production; directional equivalent plant power curve, regression, artificial neural networks, time series models and fuzzy logic algorithms are developed. Turbine based 10-minutes average wind speed, wind direction, temperature measurements, and the actual power production of the farm from March 2015 to September 2017 are used in model development. All algorithms are trained with more than 2 years historical data, and the performance of algorithms are tested with an untrained one-month measurement data. According to the results, the most precise algorithm, and optimum number of turbines and input data are selected. The locations of these turbines are used to determine the optimum resolution of domains in NWP model development study.
- Published
- 2018
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30. MP36-20 INCREASED FIBRINOGEN AND D-DIMER LEVELS ARE ASSOCIATED WITH ADVERSE TUMOR CHARACTERISTICS AND DECREASED SURVIVAL IN RENAL CELL CARCINOMA: THE 2ND REPORT WITH EXTENDED PATIENT NUMBER AND FOLLOW-UP
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Samed Verep, Selcuk Erdem, Tzevat Tefik, Oner Sanli, Yasar Pazir, Faruk Özcan, Murat Tunc, and Ismet Nane
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medicine.medical_specialty ,business.industry ,Renal cell carcinoma ,Urology ,D-dimer ,Increased fibrinogen ,Medicine ,business ,medicine.disease - Published
- 2018
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31. MP05-19 THE FACTORS ASSOCIATED WITH GLEASON UPGRADING AT RADICAL PROSTATECTOMY: A PERSPECTIVE FROM THE SINGLE INSTITUTIONAL ASSESSMENT OF BIOPSY AND FINAL PATHOLOGY
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Samed Verep, Faruk Özcan, Tzevat Tefik, Ismet Nane, Isin Kilicaslan, Murat Tunc, Yasemin Ozluk, Selcuk Erdem, and Oner Sanli
- Subjects
medicine.medical_specialty ,medicine.diagnostic_test ,business.industry ,Prostatectomy ,Urology ,General surgery ,Institutional assessment ,medicine.medical_treatment ,Biopsy ,Perspective (graphical) ,medicine ,business - Published
- 2018
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32. Prospective evaluation of complications in laparoscopic urology at a mid-volume institution using standardized criteria: Experience of 1023 cases including learning curve in 9 years
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Tayfun Oktar, Mazhar Ortac, Emre Salabas, Baris Yucel, Murat Tunc, Ismet Nane, Serkan Karakus, Tzevat Tefik, Oner Sanli, Abubekir Boyuk, Faruk Özcan, Necdet Aras, and Selcuk Erdem
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Laparoscopic surgery ,medicine.medical_specialty ,Scoring system ,Complications ,medicine.medical_treatment ,030232 urology & nephrology ,laparoscopy ,lcsh:Surgery ,Prospective evaluation ,03 medical and health sciences ,0302 clinical medicine ,medicine ,Complication rate ,lcsh:RC799-869 ,Laparoscopy ,urology ,medicine.diagnostic_test ,business.industry ,Significant difference ,Perioperative ,lcsh:RD1-811 ,Surgery ,030220 oncology & carcinogenesis ,Original Article ,lcsh:Diseases of the digestive system. Gastroenterology ,Complication ,business - Abstract
Aim: To evaluate the laparoscopic operations performed in our department according to the modified Clavien classification system of complications. Materials and Methods: Between September, 2005 and February, 2014, a total of 1023 laparoscopic cases were performed. This period was divided into three terms (Terms 1, 2 and 3 consisting of 38, 32 and 32 months, respectively). According to the European Scoring System (ESS), easy (E), slightly difficult (SD), fairly difficult (FD), difficult (D), very difficult (VD) and extremely difficult (ED) cases were 35, 88, 170, 390, 203 and 137, respectively. The perioperative complications were evaluated based on the 3 time periods, with a specific emphasis on determining the learning curve according to the modified Clavien classification system of complications. Results: A total of 236 (23.1%) complications were observed according to the modified Clavien classification. The minor (Clavien I-II) and major (Clavien III, IV and V) complication rates were 20.5% (n = 210) and 2.4% (n = 26), respectively. Clavien I was the most frequently encountered type of complication (n = 120, %11.7). No significant difference was observed among all 3 time periods regarding total complication rates. The D cases had the highest complication rate compared to E, SD, FD, VD and ED cases among all three terms. The total number of complications increased significantly with increasing grade of technical difficulty according to the ESS. Conclusion: Complications encountered in our laparoscopic surgery experience were predominantly minor, and the rate of complications was not significantly increased during the learning curve. The present data can provide guidance and manage expectations for surgeons introducing laparoscopy into their practice.
- Published
- 2016
33. Simulation of electricity generation by marine current turbines at Istanbul Bosphorus Strait
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Tolga Kara, K. M. Murat Tunc, Muammer Ozbek, and Hasan Yazicioglu
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Engineering ,business.industry ,020209 energy ,Mechanical Engineering ,Ocean current ,Elevation ,02 engineering and technology ,Building and Construction ,Pollution ,Turbine ,Industrial and Manufacturing Engineering ,Renewable energy ,Current (stream) ,General Energy ,Electricity generation ,Offshore geotechnical engineering ,0202 electrical engineering, electronic engineering, information engineering ,Electrical and Electronic Engineering ,Underwater ,business ,Civil and Structural Engineering ,Marine engineering - Abstract
In this work, several simulations and analyses are carried out to investigate the feasibility of generating electricity from underwater sea currents at Istanbul Bosphorus Strait. Bosphorus is a natural canal which forms a border between Europe and Asia by connecting Black Sea and Marmara Sea. The differences in elevation and salinity ratios between these two seas cause strong marine currents. Depending on the morphology of the canal the speed of the flow varies and at some specific locations the energy intensity reaches to sufficient levels where electricity generation by marine current turbines becomes economically feasible. In this study, several simulations are performed for a 10 MW marine turbine farm/cluster whose location is selected by taking into account several factors such as the canal morphology, current speed and passage of vessels. 360 different simulations are performed for 15 different virtual sea states. Similarly, 8 different configurations are analyzed in order to find the optimum spacing between the turbines. Considering the spatial variations in the current speed within the selected region, the analyses are performed for three different flow speeds corresponding to ±10% change in the average value. For each simulation the annual energy yield and cluster efficiency are calculated.
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- 2016
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34. Cerebellar hypermetabolism: an alternative marker for diagnosis of paraneoplastic cerebellar degeneration
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Doruk Arslan, Fadime Sinem Ardıc, Ozge Berna Gultekin-Zaim, Murat Tuncel, Neyran Kertmen, Rahsan Gocmen, Fatma Gokcem Yildiz, and Ersin Tan
- Subjects
Neurology. Diseases of the nervous system ,RC346-429 - Published
- 2023
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35. Evaluation of the Effects of Various Levels of Maxillary Incisor Protrusion on Upper Lip
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Murat Tunca and Yasemin Tunca
- Subjects
i̇ncisor ,lip ,cephalometry ,orthodontics appliance-fixed ,Medicine - Abstract
INTRODUCTION: This study aimed to evaluate the effect of upper central incisors on the upper lip after fixed orthodontic treatment. METHODS: In this retrospective study, 30 individuals aged between 202 and 278 months whose lateral cephalometric radiographs were evaluated at the beginning and end of treatment were included. The study was divided into two groups: Group A, in which the upper incisors protruded by 0–1 mm, and Group B, in which they protruded by 1–3 mm. The soft tissue nasolabial angle, upper lip thickness, and upper lip protrusion values were compared at the beginning and end of treatment in both groups. A Mann-Whitney U test was used to determine the relationship between continuous variables, and Spearman correlation coefficient was used to determine the relationship between these variables. RESULTS: The mean upper incisor protrusion was 0.49 +- 0.3 mm for Group A and 2.29 +- 0.56 mm for Group B. The nasolabial angle was -0.57 +- 1.13° in Group A and -3.78 +- 76° in Group B. The lip thickness was 0.18 +- 0.14 mm in Group A and -0.73 +- 0.49 mm in Group B. The upper lip protrusion was 0.34 +- 0.45 mm for Group A and 1.48 +- 0.45 mm for Group B. There was a statistically significant difference between the groups for all three values (p = 0.001). DISCUSSION AND CONCLUSION: Upper incisor protrusion was used to determine a decrease in nasolabial angle and a decrease in upper lip protrusion. However, when the protrusion amount increased, a decrease in lip thickness was observed.
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- 2023
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36. Early neonatal outcomes of very-low-birth-weight infants in Turkey: a prospective multicenter study of the Turkish Neonatal Society
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Gürsoy, Tuğba (ORCID 0000-0002-6084-4067 & YÖK ID 214691), Koç, Esin; Demirel, Nihal; Baş, Ahmet Yağmur; Işık, Dilek Ulubaş; Hirfanoğlu, İbrahim Murat; Tunc, Turan; Sarı, Fatma Nur; Karatekin, Güner; Özdemir, Ramazan; Altunhan, Hüseyin; Çetinkaya, Merih; Özcan, Beyza; Özkiraz, Servet; Çalkavur, Sebnem; Tekgündüz, Kadir Şerafettin; Taştekin, Ayhan; Özlü, Ferda; Özyurt, Banu Mutlu; Özdemir, Ahmet; Çetinkaya, Bilin; Demirelli, Yaşar; Köklü, Esad; Çelik, Ülker; Tarakçı, Nuriye; Armangil, Didem; Okulu, Emel; Narter, Fatma; Mutlu, Birgul; Mert, Mustafa Kurthan; Bülbül, Ali; Asker, Hüseyin Selim; Uygur, ÖzgÜn; Uslu, İlker Sait; Ertuğrul, Sabahattin; Aydemir, Cumhur; Çelik, Hasan Tolga; Küçüktaşçı, Kazım; Arslan, Selda; Ergin, Hacer; Zenciroğlu, Aysegül; Yurttutan, Sadık; Orman, Ayşen; Tuncer, Oğuz; Yaşa, Beril; Acunas, Betül; Takci, Şahin; Gökmen, Zeynel; Özkan, Hilal; Cömert, Serdar; Üstün, Nuran; Mutlu, Mehmet; Bayraktar, Bilge Tanyeri; Bilgin, Leyla; Tuzun, Funda; Aydemir, Özge; Akdağ, Arzu; Memisoğlu, Aslı; Can, Emrah; Terek, Demet; Beken, Serdar; Turan, Özden; Güzoğlu, Nilüfer; Örs, Rahmi; Kale, Yusuf; Hekimoğlu, Berna; Aylanc, Hakan; Eroğlu, Funda; Şahin, Suzan; Konak, Murat; Sarıcı, Dilek; Kılıç, İlknur; Hakan, Nilay, School of Medicine, Gürsoy, Tuğba (ORCID 0000-0002-6084-4067 & YÖK ID 214691), Koç, Esin; Demirel, Nihal; Baş, Ahmet Yağmur; Işık, Dilek Ulubaş; Hirfanoğlu, İbrahim Murat; Tunc, Turan; Sarı, Fatma Nur; Karatekin, Güner; Özdemir, Ramazan; Altunhan, Hüseyin; Çetinkaya, Merih; Özcan, Beyza; Özkiraz, Servet; Çalkavur, Sebnem; Tekgündüz, Kadir Şerafettin; Taştekin, Ayhan; Özlü, Ferda; Özyurt, Banu Mutlu; Özdemir, Ahmet; Çetinkaya, Bilin; Demirelli, Yaşar; Köklü, Esad; Çelik, Ülker; Tarakçı, Nuriye; Armangil, Didem; Okulu, Emel; Narter, Fatma; Mutlu, Birgul; Mert, Mustafa Kurthan; Bülbül, Ali; Asker, Hüseyin Selim; Uygur, ÖzgÜn; Uslu, İlker Sait; Ertuğrul, Sabahattin; Aydemir, Cumhur; Çelik, Hasan Tolga; Küçüktaşçı, Kazım; Arslan, Selda; Ergin, Hacer; Zenciroğlu, Aysegül; Yurttutan, Sadık; Orman, Ayşen; Tuncer, Oğuz; Yaşa, Beril; Acunas, Betül; Takci, Şahin; Gökmen, Zeynel; Özkan, Hilal; Cömert, Serdar; Üstün, Nuran; Mutlu, Mehmet; Bayraktar, Bilge Tanyeri; Bilgin, Leyla; Tuzun, Funda; Aydemir, Özge; Akdağ, Arzu; Memisoğlu, Aslı; Can, Emrah; Terek, Demet; Beken, Serdar; Turan, Özden; Güzoğlu, Nilüfer; Örs, Rahmi; Kale, Yusuf; Hekimoğlu, Berna; Aylanc, Hakan; Eroğlu, Funda; Şahin, Suzan; Konak, Murat; Sarıcı, Dilek; Kılıç, İlknur; Hakan, Nilay, and School of Medicine
- Abstract
Objective: to investigate the early neonatal outcomes of very-low-birth-weight (VLBW) infants discharged home from neonatal intensive care units (NICUs) in Turkey. Material and methods: a prospective cohort study was performed between April 1, 2016 and April 30, 2017. The study included VLBW infants admitted to level III NICUs. Perinatal and neonatal data of all infants born with a birth weight of.1500 g were collected for infants who survived. Results: data from 69 NICUs were obtained. The mean birth weight and gestational age were 1137 +/- 245 g and 29 +/- 2.4 weeks, respectively. During the study period, 78% of VLBW infants survived to discharge and 48% of survived infants had no major neonatal morbidity. VLBW infants who survived were evaluated in terms of major morbidities: bronchopulmonary dysplasia was detected in 23.7% of infants, necrotizing enterocolitis in 9.1%, blood culture proven late-onset sepsis (LOS) in 21.1%, blood culture negative LOS in 21.3%, severe intraventricular hemorrhage in 5.4% and severe retinopathy of prematurity in 11.1%. Hemodynamically significant patent ductus arteriosus was diagnosed in 24.8% of infants. Antenatal steroids were administered to 42.9% of mothers. Conclusion: the present investigation is the first multicenter study to include epidemiological information on VLBW infants in Turkey. Morbidity rate in VLBW infants is a serious concern and higher than those in developed countries. Implementation of oxygen therapy with appropriate monitoring, better antenatal and neonatal care and control of sepsis may reduce the prevalence of neonatal morbidities. Therefore, monitoring standards of neonatal care and implementing quality improvement projects across the country are essential for improving neonatal outcomes in Turkish NICUs., Turkish Neonatal Society
- Published
- 2019
37. Feasibility of Offshore Wind Energy in Turkey; A Case Study for Gulf of Edremit at the Aegean Sea.
- Author
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OZBEK, Muammer and Murat TUNC, Kerim Mehmet
- Subjects
- *
WIND power , *WIND speed measurement , *BATHYMETRIC maps - Abstract
This work aims to investigate the feasibility of offshore wind energy in Turkey by performing extensive simulations and analyses for a 50-90 MW capacity offshore wind park to be constructed at the Gulf of Edremit, a very high potential site located at the Aegean Sea, 3 km from the west coastline of Turkey. The location and layout of the farm is optimized by considering the sea depth data obtained from bathymetric maps and wind speed measurements acquired from the MERRA data and local met mast. Dynamic interactions among the turbines and the resulting wake losses are modeled by using two different site assessment programs. Capacity factors and the annual energy production yields are calculated for 8 different types of turbines with rated powers changing between 2 and 3.6 MW. [ABSTRACT FROM AUTHOR]
- Published
- 2021
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38. 22-year survival following radical nephrectomy and several metastasectomies in a case of renal cell carcinoma
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Hayri Murat Tunc, Mert Basaran, Ömer Barış Yücel, and Necdet Aras
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medicine.medical_specialty ,business.industry ,medicine.medical_treatment ,Disease ,Malignancy ,medicine.disease ,Nephrectomy ,law.invention ,Metastasis ,Randomized controlled trial ,law ,Renal cell carcinoma ,Medicine ,In patient ,Radiology ,Metastasectomy ,business ,Urooncology - Abstract
Renal cell carcinoma (RCC) is a common malignancy. Metastases can be seen both synchronously, at the time of diagnosis, and metachronously during follow-up. At the time of diagnosis, 23% of the patients have metastatic disease. and 25% of patients will develop metastasis during follow-up period after nephrectomy. Nearly 80% of them develop within the first 5 years. However late metastasis of RCC have been also reported within the postoperative 10 years in the literature. For metastatic lesions, if surgically feasible, metastasectomy, and targeted pharmaceutical agents have been recommended. However any randomized controlled study which aimed to determine treatment protocol in patients who develop multiple metastases has not been cited in the literature. Herein, we are presenting a case with renal cell carcinoma in whom within 22 years of follow-up after 10 years of survival multiple metastases in different organs were detected which were managed with surgical, and medical treatments. As far as we know, this case is the first patient with the longest survival whose non-pulmonary metastases had been treated with more than one surgical interventions.
- Published
- 2017
39. The Prevalence of Minimal Hepatic Encephalopathy in an Outpatient Hepatology Clinic
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Deniz Eyice, Ayşe Merve Ok, Abdullah Sonsuz, Mustafa Şükrü Şenocak, Meliha Nur Durak, Sebati Özdemir, Billur Canbakan, Murat Tuncer, and Ibrahim Hatemi
- Subjects
Diseases of the digestive system. Gastroenterology ,RC799-869 - Published
- 2023
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40. Comparison of Hospitalized COVID-19 Patients in Terms of Disease Course According to the Presence of Gastrointestinal Symptoms Before and After Admission
- Author
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Enes Ali Kurt, Oğuz Kağan Bakkaloğlu, Tuğçe Eşkazan, Selma Akdoğan, Uğur Öna, Selçuk Candan, Rıdvan Karaali, Bilgül Mete, Yalım Dikmen, Murat Tuncer, İbrahim Hatemi, and Kadir Bal
- Subjects
Diseases of the digestive system. Gastroenterology ,RC799-869 - Published
- 2023
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41. Effect of Humic Acid Applications on Physiological and Biochemical Properties of Soybean (Glycine max L.) Grown under Salt Stress Conditions
- Author
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Noor Maiwan BAHJAT, Murat TUNCTURK, and Ruveyde TUNCTURK
- Subjects
glycine max l. ,humic acid ,salt stress ,soybean ,Agriculture (General) ,S1-972 - Abstract
In the study, humic acid was applied to soybean (Glycine max L.), which has high economic value and importance, to determine the tolerance level of the plant against salt stress, and physical and chemical changes in the plant were observed. The study was carried out in the climate room of Van Yuzuncu Yil University Faculty of Agriculture, Department of Field Crops in 2019. In the research, İlksoy soybean variety was used. The experiment was carried out in 4 factorial orders according to the factorial experiment was designed based on Completely Randomized Design. In the research, four different Humic acid doses (0, 500, 1000 and 2000 ppm) and 3 different NaCl salt doses (0, 125 and 250 mM) were used. In the study, root length, stem length, root fresh weight, stem fresh weight, root dry weight, stem dry weight, leaf area, chlorophyll content, ion leakage in leaf tissues, lipid peroxidation level (MDA), relative water content and membrane resistance index in leaf tissues were determined. Properties such as index were also examined. As a result of the study, the longest root was 38 cm for the control plots that salt and humic acid didn’t apply to the plants. The highest root fresh weight was 2.08 g and the stem fresh weight was 1.87 g of the plots where 500 ppm humic acid dose applied. In addition, the plants with the highest chlorophyll ratio was 51.05 under 250 mM salt applied without humic acid application.
- Published
- 2023
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42. Effects of Vermicompost, Compost and Animal Manure on Vegetative Growth, Physiological and Antioxidant Activity Characteristics of Thymus vulgaris L. under Water Stress
- Author
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Amir RAHIMI, Harun GITARI, Graham LYONS, Saeid HEYDARZADEH, Murat TUNCTURK, and Ruveyde TUNCTURK
- Subjects
safflower ,salt stress ,antioxidant enzymes ,germination ,total phenolic content ,Agriculture (General) ,S1-972 - Abstract
This study investigated the effect of organic fertilizers on vegetative growth and the physiological and antioxidant activity characteristics of thyme plants grown under stress. A factorial experiment was conducted according to randomized complete block design with 12 combinations and 3 replications in the 2018 growing season. The experiment factors were the implementation of organic fertilizers at 4 levels (vermicompost, manure compost, animal manure, and control) and irrigation regime at 3 levels (Irr1, Irr2, and Irr3, respectively, irrigation after 60, 90, and 120 mm evaporation from A pan). The results showed that With delayed irrigation, the chlorophyll a and b contents, total chlorophyll, and carotenoid decreased, while the application of low water stress enhanced the amount of oil and the oil yield with the respective highest values of 2.61% and 3.68 g/m under mild stress conditions. Nonetheless, higher values for the aforementioned properties were noted with the application of vermicompost. Water deficit decreased nutrient uptake (K, P, and N) and relative water content, biological yield, and seed yield of thyme, indicating that thyme was sensitive to drought, and organic fertilizers application improved nutrient uptake (K, P, and N) and relative water content, biological yield and seed yield of the plant within irrigation levels. The activities of catalase, superoxide dismutase and ascorbate peroxidase were reduced under organic fertilizers such as vermicompost and manure compost as compared with control under drought stress. The plants of thyme showed a good response to organic fertilizers under water deficit circumstances, with vermicompost being the most effective.
- Published
- 2023
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43. The Effect of Some Endophytic Bacteria on Seedling Growth and Physiological Properties of Salvia officinalis L.
- Author
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Ceylan Pınar UÇAR, Ezelhan SELEM, Rüveyde TUNÇTÜRK, Murat TUNÇTÜRK, and Ahmet AKKÖPRÜ
- Subjects
endophytic bacteria ,medicinal sage (salvia officinalis l.) ,pgpr ,Agriculture (General) ,S1-972 - Abstract
In order to meet the demand for medicinal sage (Salvia officinalis L.), which is an important economic product, harvesting from nature has economic value. However, it may not always be of the desired standard and quality. Also, the harvesting from nature endangers their natural population causing their genetic base to decline. For this reason, it is important to produce it in an agrosystem and to increase yield in a sustainable way. In this study, the effects of eleven endophyte bacteria (EB) isolates applications on the development, morphology, and physicochemical properties of Salvia officinalis L. were investigated by climate chamber experiments. Peat+perlite+soil (1:1:2) mixture was used as the growing medium and EB was applied two times by soaking method. Effects of EB applications on shoot/root length, root/stem fresh and dry weight, Dualex values (Nitrogen balance index (NBI), flavonol, anthocyanin, and chlorophyll), leaf area, leaf temperature and color values (L*, a) *, b * C and Hue° were examined. All EB applications increased the plant height and leaf area. Also, the majority of EB isolates enhanced the root dry weight. The effect of EB applications on flavonol and chlorophyll content was not found statistically significant. However, there was a statistically significant increase in the nitrogen balance index (NBI). It was also observed that EB applications caused changes in plant color. According to the results obtained, it has been seen that it is possible to produce environmentally friendly and sustainable medicinal sage with appropriate plant-bacteria combinations.
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- 2023
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44. The Associatin of Sella Turcica Morphology and Dimension with Craniofacial and Dental Anomalies
- Author
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Esra Ceren Tatlı, Yesim Kaya, and Murat Tunca
- Subjects
sella turcica ,craniofacial anomalies ,dental anomalies ,Medicine - Abstract
Sella turcica, which keeping the pituitary gland inside, is frequently used in cephalometric analysis during the orthodontic treatment planning because it can be easily detected in lateral cephalometric radiographs. Embryologically, the cartilage forming the anterior wall of the sella turcica develops from the neural crest cells. Similarly, it has been reported that the dental epithelial progenitor cells and maxillary, palatal and frontonasal development regions also generated from neural crest cells and these cells are effective in sella turcica bridging and tooth development and eruption. Thus, in the literature, the variations in sella turcica dimensions and morphology has been associated with different craniofacial and dental anomalies due to its relationship with pituitary gland, development origin, and anatomic position. At this point, the correct analysis of sella turcica, provide early diagnosis of the anomalies and pathologies that can be arise in the future. However, it has been observed that conflicting results were obtained from these studies in which subjects with different ethnical origin, age, and craniofacial morphologies were evaluated and different radiographic techniques were used. In this review, it was aimed to examine these studies which were evaluated the association of sella turcica dimensions and morphology with different craniofacial and dental anomalies.
- Published
- 2023
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45. Use of a combined retroperitoneoscopic and transperitoneal laparoscopic technique for the management of renal cell carcinoma with level I tumor thrombi
- Author
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Tayfun Oktar, Oner Sanli, Murat Tunc, Tzevat Tefik, Faruk Özcan, and Selcuk Erdem
- Subjects
medicine.medical_specialty ,laparoscopy ,lcsh:Surgery ,Kidney ,Tumor thrombus ,Blood loss ,Renal cell carcinoma ,retroperitoneoscopy ,medicine.artery ,medicine ,Thrombus ,Renal artery ,lcsh:RC799-869 ,Laparoscopy ,medicine.diagnostic_test ,business.industry ,vena cava ,lcsh:RD1-811 ,medicine.disease ,Working space ,Surgery ,medicine.anatomical_structure ,thrombus ,Original Article ,lcsh:Diseases of the digestive system. Gastroenterology ,Radiology ,business - Abstract
Background: To report our initial experiences using a combined retroperitoneoscopic and transperitoneal laparoscopic technique for the management of renal cell carcinoma with level I tumor thrombi. Materials and Methods: Two patients underwent this technique for tumors 11- and 13-cm in diameter. After transection of the renal artery with limited mobilization of the kidney using a retroperitoneoscopic approach, additional ports were placed, and the management of the tumor thrombus was performed in the large working space provided by the transperitoneoscopic approach. Results: The technique was feasible in the present 2 cases. The total operative times were 170 and 200 min, respectively. The estimated blood loss was 450 cc in the first case and 200 cc in the second case. No complications were observed in either of the patients. Conclusions: Based on the initial clinical experience, we have presented a feasible surgical option for the laparoscopic management of renal cell carcinoma with level I thrombi.
- Published
- 2013
46. Energy Yield Potential Estimation Using Marine Current Turbine Simulations for the Bosphorus
- Author
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Tolga Kara, Muammer Ozbek, Hasan Yazicioglu, and K. M. Murat Tunc
- Subjects
Current (stream) ,Engineering ,Electricity generation ,business.industry ,Energy intensity ,Flow (psychology) ,Offshore geotechnical engineering ,Elevation ,Underwater ,business ,Turbine ,Marine engineering - Abstract
In this work, several simulations and analyses are carried out to investigate the feasibility of generating electricity from sea underwater currents at Istanbul Bosphorus Strait. Bosphorus is a natural canal which forms a border between Europe and Asia by connecting Black Sea and Marmara Sea. The differences in elevation and salinity ratios between these two seas cause strong underwater currents. Depending on the morphology of the canal the speed of the flow varies and at some specific locations the energy intensity reaches to sufficient levels where electricity generation by marine current turbines becomes economically feasible. In this study, several simulations are performed for a 10 MW marine turbine farm/cluster whose location is selected by taking into account several factors such as the canal morphology, current speed and passage of vessels. 360 different simulations are performed for 15 different virtual sea states (for 5 significant wave heights and 3 peak periods). Similarly, 8 different configurations are analyzed in order to find the optimum spacing between the turbines. Considering that the complicated morphology of the strait may cause some spatial variations in the current speed within the selected region, the analyses are performed for three different flow speeds corresponding to 10 % increase and decrease in the average value. For each simulation the annual energy yield and cluster efficiency are calculated.
- Published
- 2016
- Full Text
- View/download PDF
47. What is the Role of Enlarged Lymph Node Resection Alone in Patients With Nonseminomatous Germ Cell Tumor Who Had Stage II or III Disease?
- Author
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Haluk Ander, Meltem Ekenel, Sevil Bavbek, Murat Tunc, Isin Kilicaslan, Oner Sanli, Mert Basaran, Serkan Keskin, and Faruk Özcan
- Subjects
Adult ,Male ,Retrograde ejaculation ,medicine.medical_specialty ,Adolescent ,Urology ,medicine.medical_treatment ,Retroperitoneal Lymph Node ,Kaplan-Meier Estimate ,Young Adult ,Retroperitoneal lymph node dissection ,Testicular Neoplasms ,medicine ,Carcinoma ,Humans ,Retroperitoneal Space ,Neoplasm Staging ,Retrospective Studies ,Inguinal orchiectomy ,Chemotherapy ,business.industry ,Organ Size ,Middle Aged ,Neoplasms, Germ Cell and Embryonal ,medicine.disease ,Combined Modality Therapy ,Surgery ,Treatment Outcome ,Oncology ,Lymphatic Metastasis ,Lymph Node Excision ,Lymph Nodes ,Lymph ,Germ cell tumors ,Neoplasm Recurrence, Local ,business ,Orchiectomy - Abstract
Background Retroperitoneal lymph node dissection is an important treatment modality in nonseminomatous germ cell tumors of the testis. However, the role of more limited surgical approaches such as resection of enlarged lymph nodes only is still controversial. Patients and Methods Between January 1991 and December 2010, charts of 94 patients who underwent resection of enlarged retroperitoneal lymph nodes alone were reviewed. Pathologic findings, local recurrence, and adverse effects were noted after this surgical approach. Results The median age was 25.5 years. Twenty-one (22.6%) patients had lung metastasis, and 5 (5.4%) patients had nonregional lymph node metastasis at the initial visit. Eighty-seven (91.6%) patients received chemotherapy after inguinal orchiectomy, and the other patients had mass resection only for enlarged lymph nodes without prior chemotherapy. In patients who had chemotherapy before surgery, the median retroperitoneal lymph node size before and after chemotherapy cycles was 55 mm and 32.5 mm, respectively. The pathologic assessment of retroperitoneal masses revealed mature teratoma in 51.6% (n = 47) of patients, viable carcinoma in 20.9% (n = 19) of patients, and necrosis or fibrosis in 27.5% (n = 25) of patients. The median follow-up time was 60.2 months (range, 2.7-334.8 months). During follow-up, 5 (5.4%) patients had radiologic relapse at the retroperitoneal area, and 3 patients developed systemic metastases. Six (6.4%) patients died of their disease, 2 (2.1%) patients were alive with disease, 86 (91.5%) patients were healthy at the last follow-up. Ejaculation status was recorded in 56 patients. Antegrade ejaculation had preserved in 53 (94.6%) of these patients. Conclusions Resection of enlarged lymph node metastases alone is a reasonable treatment option for patients with nonseminomatous germ cell tumors.
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- 2012
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48. LKB1 mutations and their correlation with LKB1 and Rheb expression in bladder cancer
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Murat Tunc, Oner Sanli, Turgut Ulutin, Serife Basaran, Nur Buyru, Hatice Tigli, and Didem Seven
- Subjects
congenital, hereditary, and neonatal diseases and abnormalities ,Cancer Research ,Genotype ,Protein Serine-Threonine Kinases ,medicine.disease_cause ,Exon ,AMP-Activated Protein Kinase Kinases ,medicine ,Humans ,Missense mutation ,RNA, Messenger ,Codon ,skin and connective tissue diseases ,Molecular Biology ,Gene ,PI3K/AKT/mTOR pathway ,Monomeric GTP-Binding Proteins ,Mutation ,Bladder cancer ,Base Sequence ,biology ,Neuropeptides ,Exons ,medicine.disease ,Introns ,Stop codon ,Gene Expression Regulation, Neoplastic ,Urinary Bladder Neoplasms ,Disease Progression ,biology.protein ,Cancer research ,Ras Homolog Enriched in Brain Protein ,RHEB - Abstract
Although there are extensive studies on the genetics of bladder cancer, several questions remain unanswered. One of the pathways which are altered in bladder cancer is the mTOR signaling pathway. In the present study, we analyzed the expression of Rheb gene and genetic alterations in the LKB1 gene which are the key components of mTOR pathway. Nine exons of the LKB1 gene were analyzed by direct sequencing in 51 bladder cancer patients. To investigate the expression of Rheb and LKB1, real-time quantitative RT-PCR was performed in bladder tumor and normal bladder tissue samples. We did not observed a statistically significant difference in Rheb or LKB1 expression between the tumor and normal tissue samples. We detected a novel missense mutation creating stop codon in a high percent of the tumor samples. Five different single nucleotide substitutions were also observed in the introns. Our results indicate that LKB1 gene may play a role in the progression of bladder cancer. © 2012 Wiley Periodicals, Inc.
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- 2012
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49. Laparoscopic Nephrectomy in Patients Undergoing Hemodialysis Treatment
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Tzevat Tefik, Oner Sanli, Murat Tunc, Meltem Savran Karadeniz, Ismet Nane, Tayfun Oktar, and Mazhar Ortac
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Adult ,Male ,medicine.medical_specialty ,Adolescent ,medicine.medical_treatment ,education ,Urology ,Hematocrit ,Kidney ,Nephrectomy ,Young Adult ,Renal Dialysis ,Scientific Papers ,medicine ,Humans ,Child ,Laparoscopy ,Aged ,Retrospective Studies ,Aged, 80 and over ,medicine.diagnostic_test ,business.industry ,Infant ,Laparoscopic nephrectomy ,Perioperative ,Middle Aged ,surgical procedures, operative ,Treatment Outcome ,medicine.anatomical_structure ,Hemodialysis ,Child, Preschool ,Cohort ,Kidney Failure, Chronic ,Female ,Surgery ,business ,Follow-Up Studies - Abstract
With an experienced laparoscopic team of surgeons, laparoscopic nephrectomy may be performed safely., Background and Objectives: To report our experience with laparoscopic nephrectomy (LN) in patients undergoing hemodialysis compared with normal counterparts. Methods: Seventeen patients (20 renal units, Group 1) undergoing hemodialysis underwent LN, which was indicated due to nonfunctioning kidney in 17 and suspected malignancy in 3 renal units. Radical nephrectomy (RN), simple nephrectomy (SN), and simple nephroureterectomy (SNU) were performed in 3, 9, and 8 cases, respectively. For comparison, 101 patients (Group 2) without CRF (chronic renal failure) who had undergone LN were evaluated. In this group, RN, SN, SNU and radical nephroureterectomy (RNU) were performed in 48, 41, 8, and 4 patients, respectively. Results: The mean age (36.9±13.1 vs. 48.7±19.4yr, P=0.002) and BMI (22.1±4.8 vs. 26.2±5.1kg/m2, P=0.001) were lower in Group 1, whereas ASA (physical status score of American Society of Anesthesiologists) score (2.8±0.4 vs. 1.5±0.7, P
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- 2010
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50. A REVERSIBLE THERMOSENSITIVE ADHESIVE FOR RETINAL IMPLANTS
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Mark S. Humayun, Xuanhong Cheng, Buddy D. Ratner, and Murat Tunc
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Male ,Hot Temperature ,Time Factors ,genetic structures ,Polymers ,Acrylic Resins ,thermosensitive plasma-polymerized N-isopropyl acrylamide ,chemistry.chemical_compound ,Vitrectomy ,Medicine ,Postoperative Period ,Fluorescein Angiography ,Acrylic resin ,chemistry.chemical_classification ,retinal implants ,Prostheses and Implants ,General Medicine ,Polymer ,visual_art ,Acrylamide ,visual_art.visual_art_medium ,Rabbits ,Tomography, Optical Coherence ,Fundus Oculi ,Retinal implant ,Xylenes ,Retina ,Prosthesis Implantation ,In vivo ,Electroretinography ,Animals ,Dimethylpolysiloxanes ,Acrylamides ,business.industry ,Retinal Detachment ,technology, industry, and agriculture ,Retinal ,Retinal Perforations ,eye diseases ,retinal adhesion ,Nylons ,Ophthalmology ,chemistry ,rabbit study ,Tissue Adhesives ,sense organs ,Adhesive ,Implant ,business ,Nuclear chemistry - Abstract
WOS: 000260474200025 PubMed: 19430393 Purpose: To study the in vivo effects of a thermosensitive retinal adhesive, plasma-polymerized N-isopropyl acrylamide (ppNIPAM), in rabbit eyes. Methods: Parylene C(poly(monochloro-p-xylylene)) (20 mu m) and poly(dimethyl siloxane) (PDMS) (>= 200 mu m) coated with ppNIPAM were used as implant materials. Following pars plana vitrectomy (PPV), ppNIPAM coated parylene (n = 3) and PDMS (n = 3) implants were inserted over the retina in six rabbits. Baseline and follow-up imaging (color fundus photographs, fluorescein angiography, and optic coherence tomography [OCT]) and electroretinogram recordings were performed. Histologic evaluation was performed following enucleation at 6 weeks. Results: Intraoperative retinal adhesion occurred in all eyes with ppNIPAM coated parylene and PDMS implants. Two eyes developed retinal tears during the implantation procedure and the ppNIPAM coated implants closed the retinal tears successfully preventing retinal detachment. OCT findings confirmed the retinal adhesion in all eyes. Four weeks after implantation one parylene and one PDMS implant detached partly from the retinal surface. Histology showed mild changes at the outer retinal segments. There was no evidence of ocular toxicity and inflammation. None of the eyes that had an implant covering the retinal tear developed a retinal detachment but had some inflammatory changes around the implants. Conclusions: ppNIPAM coated implants may provide retinal adhesion in vivo without measurable ocular toxicity in the short term. Covering a retinal tear, the ppNIPAM coated implants may prevent retinal detachment. RETINA 28:1338-1343, 2008 National Science FoundationNational Science Foundation (NSF) [EEC 9529161] Supported by the National Science Foundation to UWEB ERC (EEC 9529161).
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- 2008
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