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      • Women's Perceptions and Attitudes about Cervical Cancer in Turkey: Kato's Device as an Alternative to the Pap Smear

        Sahin, Mustafa Kursat,Sahin, Gulay,Dikici, Mustafa Fevzi,Igde, Fusun Artiran,Yaris, Fusun Asian Pacific Journal of Cancer Prevention 2014 Asian Pacific journal of cancer prevention Vol.15 No.2

        Aims: To determine the status of women's perception and attitudes about cervical cancer and their thoughts on Kato's self-sampling device. Materials and Methods: This descriptive research was conducted between July-December 2012 with a study populationof married women older than 18 years. Results: A total of 246 women volunteered, with a mean age of $34.9{\pm}9.22$ (19-52). In the last year, 52.0% had been examined by a gynecologist to address a complaint or for a periodic health check. Of the 118 who had not had a gynecological examination, 42.4% indicated negligence, 26.3% stated the reason was no complaint, 14.4% feared they might receive bad results from the examination, and 8.5% stated that were shy or embarrassed. Of all of the women, 35.0% answered that they had information about cervical cancer, and 0.7% had heard about the HPV vaccine. No one in their families had received the vaccine. Of the women, 28.5% had had a Pap smear, and 71.4% of those had normal results. Of those who had never had a Pap smear, 47.2% had never heard about the test; 18.8% explained the reason for not having a test as shyness or embarrassment with a male doctor. None of the women had heard about Kato's device. Once the women were informed, 73.6% expresseed interest in use; 51.9% answered they could use it and not be embarrassed, 30.9% would use it because they did not have to see a doctor, and 17.1% would use it as it allows them to take a smear in all conditions and whenever they want. Of the women, 60.0% thought that they could not successfully use Kato's device; 40.0% thought that a smear should be taken by a doctor. Conclusions: Most of the women in our population had never had a Pap smear and wanted to use the Kato's device.

      • SCIESCOPUSKCI등재

        Approximate and Three-Dimensional Modeling of Brightness Levels in Interior Spaces by Using Artificial Neural Networks

        Sahin, Mustafa,Oguz, Yuksel,Buyuktumturk, Fuat The Korean Institute of Electrical Engineers 2015 Journal of Electrical Engineering & Technology Vol.10 No.4

        In this study, artificial neural networks were used to determine the intensity of brightness in interior spaces. The illumination elements to illuminate indoor spaces were considered, not individually, but as a system. So, during the planned maintenance periods of an illumination system, after its design and installation, simple brightness level measurements must be taken. For a three-dimensional evaluation of the brightness level in indoor spaces in a speedy and accurate manner, the obtained brightness level measurement results and artificial neural network model were used. Upon estimation of the most suitable brightness level for indoor spaces by using the artificial neutral network model, the energy demands required by the illumination elements decreased. Consequently, in this study, with estimations of brightness levels, the extent to which the artificial neutral networks become successful was observed and more correct results have been obtained in terms of both economy and usage.

      • KCI등재

        Electromyography-Guided Botulinum Toxin Injection Into the Cricothyroid Muscles in Bilateral Vocal Fold Abductor Paralysis

        Mustafa Sahin,Ibrahim Aydogdu,Serdar Akyildiz,Munevver Erdinc,Kerem Ozturk,Fatih Ogut 대한이비인후과학회 2017 Clinical and Experimental Otorhinolaryngology Vol.10 No.2

        Objectives. Bilateral vocal fold abductor paralysis (BVFAP) both deteriorates quality of life and may cause life-threatening respiratory problems. The aim of this study was to reduce respiratory symptoms in BVFAP patients using cricothyroid (CT) botulinum toxin (BTX) injection. Methods. Before and 2 weeks and 4 months after bilateral BTX injection into the CT muscles under electromyography; alterations in respiratory, acoustic, aerodynamic and quality of life parameters were evaluated in BVFAP patients with respiratory distress. For the respiratory evaluation modified Borg scale and spirometry, for the voice and aerodynamic evaluations Voice Handicap Index-30 (VHI-30), GRBAS, acoustic analysis (sound pressure level, F0, jitter%, shimmer%, noise-to-harmonic ratio) and maximum phonation time and for the quality of life assessment Short Form-36 (SF-36) form were used. Results. All patients were female with a mean age of 47±8.1 years. There was a mean time of 11.8±5.5 (minimum 2, maximum 23) months between BVFAP development and BTX injection. In all cases, other than one case with unknown aetiology, the cause of vocal fold paralysis was prior thyroid surgery. In total 18.6±3.1 units of BTX were applied to the CTs. In the preinjection period, and the 2nd week and 4th month after injection, the Borg dyspnea scale was 7.3/5.3/5.0, FIV1 (forced inspiratory volume in one second) was 1.7/1.7/1.8 L, peak expiratory flow (PEF) was 1.4/1.7/2.1 L/sec, maximum phonation time was 7.0/6.4/6.2 seconds and VHI-30 was 63.2/52.2/61.7 respectively. There was no significant alteration in acoustic analysis parameters. Many of the patients reported transient dysphagia within the first week. There were insignificant increases in SF-36 sub-scale values. Conclusion. After BTX injection, improvements in the mean Borg score, PEF and FIV1 values and SF-36 sub-scale scores showed the restricted success of this approach. This modality may be kept in mind as a transient treatment option for patients refused persistent tracheotomy or ablative airway surgeries.

      • KCI등재

        Improving the diagnosis of high grade and stage bladder cancer by detecting increased urinary calprotectin expression in tumor tissue and tumor-associated inflammatory response

        Yusuf Sahin,Ugur Yucetas,Huseyin Aytaç Ates,Erkan Erkan,Esma Yucetas,Mustafa Zafer Temiz,Mahmut Gokhan Toktas,Mustafa Kadihasanoglu,Birsen Cigdem Topkaya 대한비뇨의학회 2019 Investigative and Clinical Urology Vol.60 No.5

        Purpose: To investigate whether measurement of urinary calprotectin can serve as a biomarker in the diagnosis of primary bladder cancer and to confirm its diagnostic role in determining high grade and stage disease. Materials and Methods: Urinary calprotectin was measured in spot urine samples from patients with primary bladder cancer and control subjects. To confirm levels in urine, tissue samples were also obtained from bladder tumor and healthy trigone of bladder by transurethral resection in both groups. Finally, calprotectin levels in tissue and urine of the patients and control subjects were compared and their diagnostic potential was investigated in high grade and stage bladder cancers. Results: Of 82 participants, 52 were patients with bladder cancer and 30 were control subjects. The two groups were comparable in terms of age, smoking status, and comorbidities. Tissue and urinary calprotectin levels were significantly higher in the bladder cancer group. In subgroup analyses, urinary calprotectin levels were significantly higher in patients with high-grade, muscle-invasive tumors. After receiver operating characteristic analyses, the sensitivity and specificity of urinary calprotectin was 100% and 96.7%, respectively, in the diagnosis of primary bladder cancer. High grade and stage bladder cancers were detected with sensitivity and specificity of 70% and 74.2%, and 80% and 84.8%, respectively. Conclusions: Urinary calprotectin may be a valuable parameter in the diagnosis of primary bladder cancer with high sensitivity and specificity. Furthermore, it may be useful in the prediction of high grade and stage disease. However, more investigations are needed.

      • KCI등재

        Symmetric bi-$\left( \sigma ,\tau \right) $ derivations of prime and semi prime gamma rings

        Sahin Ceran,Mustafa A 대한수학회 2006 대한수학회보 Vol.43 No.1

        The purpose of this paper is to define the symmetric bi-left(sigma ,tau right) derivations on prime and semi prime Gammarings and to prove some results concerning symmetric bi-left(sigma ,tau right) derivations on prime and semi prime Gammarings.

      • KCI등재

        The First Design and Application of Floating Photovoltaic (FPV) Energy Generation Systems in Turkey with Structural and Electrical Performance

        Mustafa Kemal Kaymak,Ahmet Duran Sahin 한국정밀공학회 2022 International Journal of Precision Engineering and Vol.9 No.3

        Greenhouse gas (GHG) emissions are primarily due to the exploitation of fossil fuel as an energy source, and one of the energy alternatives for the reduction of emissions is the use of renewable energy sources; one of these is solar irradiation conversion to useable clean energy. In the city of Istanbul, floating photovoltaic (FPV) installation started in 2017, on one of the lakes with an extensive surface area, Buyukcekmece, which supplies water to the city. To reduce evaporation losses and to generate electricity, two FPV prototypes were installed, with capacities of 9 and 90 kWp. Due to the location and climate of Buyukcekmece Lake, all system components including steel construction, metal sheet, maintenance way, connecting parts, and pontoons must resist extreme weather conditions, especially harsh waves and high wind loads. This paper is focused on a survey of the survival performance of the FPV system under real weather conditions without blockage of evaporation, just the reduction of it. Stress and strain tests were also applied to pontoons, one of the vital components for floating systems. The elasticity module, yield limit and tensile strength were evaluated as 0.42 GPA, 11.5 mPA, and 19 mPA, respectively. The wave height was calculated by means of four practical relationships, taking the lake’s distinctive characteristics into consideration. The electricity generation of 90 kWp FPV measured for June 2017 was 5189 kWh. The structural and electrical performance results from these systems in the city of Istanbul could be applied further to large scale FPV applications in water reservoirs nationally and internationally.

      • SCIESCOPUSKCI등재

        SYMMETRIC BI-(σ, τ) DERIVATIONS OF PRIME AND SEMI PRIME GAMMA RINGS

        Ceran Sahin,Asci Mustafa Korean Mathematical Society 2006 대한수학회보 Vol.43 No.1

        The purpose of this paper is to define the symmetric $bi-(\sigma,\;\tau)$ derivations on prime and semi prime Gamma rings and to prove some results concerning symmetric $bi-(\sigma,\;\tau)$derivations on prime and semi prime Gamma rings.

      • SCOPUSKCI등재

        Reactions of Some Furan-3-ones with 2,3-Diaminopyridine and its Derivatives

        Sacmacl, Mustafa,Bolukbasl, Hilal,Sahin, Ertan Korean Chemical Society 2012 Bulletin of the Korean Chemical Society Vol.33 No.1

        The furan-2-ylidene acetates (3a-d), obtained from the furan-2,3-diones (1a-b) and methyl/ethyl (triphenylphosphoranylidene)-acetates (2a-b), were converted via the Michael type reactions with 2,3-diaminopyridine and its derivatives (4a-c) into the corresponding pyrrol-2-ylidene-acetates (5a-j) in moderate yields (45-94%). Structures of these compounds were determined by the IR, NMR, elemental analysis, and X-ray diffraction method.

      • SCIESCOPUSKCI등재

        Is Every Thyroid Antibody a Bad Sign?: The Complex Relationship of Antithyroid Antibodies and Obsessive-compulsive Symptoms

        Ali Caykoylu,Mustafa Ugurlu,Esra Kabadayi Sahin,Selcuk Akan,Gorkem Karakas Ugurlu,Ezgi Cisil Erdogan,Emine Ulku Alkan 대한정신약물학회 2024 CLINICAL PSYCHOPHARMACOLOGY AND NEUROSCIENCE Vol.22 No.1

        Objective: Several immunological factors are emphasized in the etiology of autoimmune thyroid diseases and obsessivecompulsive disorder. Obsessive-compulsive symptoms (OCS) are commonly seen in patients with autoimmune thyroid diseases. This study aims to evaluate the relationship between OCS and antithyroid antibodies. Methods: The study included 145 patients with Hashimoto thyroiditis or Graves’ disease and 42 healthy controls. Thyroid function tests and serum thyroid autobody levels (anti-thyroglobulin [TG], anti-thyroid peroxidase [TPO], and anti-thyroid stimulating hormone [TSH]) of the patients were measured. The socio-demographic data and OCS of the participants were evaluated with Dimensional OCS (DOCS). Results: DOCS scores were higher in patients than in the control group. There was not found a significant relationship between free T3, free T4, and TSH levels and DOCS scores. Anti-TG positivity in females was associated with lower DOCS scores. Anti-TPO positivity in males had a positive correlation with DOCS scores. There was no correlation between sex and the presence of anti-TSH in terms of OCS severity. Univariate analysis found the highest OCS scores in anti-TPO positive, anti-TG, and anti-TSH negative patients. The group with the lowest OCS scores was found to be anti-TG positive, anti-TPO, and anti-TSH negative patients. Conclusion: OCS severity could be affected by different thyroid autoantibody profiles in patients with autoimmune thyroid diseases. While anti-TG serves a protective role against OCS in females, the presence of anti-TPO may worsen the OCS in men. Additionally, the co-existence of different antithyroid antibodies may affect the severity of OCS differently according to sex.

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