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DOMAIN OF THE DOUBLE SEQUENTIAL BAND MATRIX B(r,s) ON SOME MADDOX'S SPACES

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Acta Mathematica Scientia 2014年第2期34卷 394-408页

作者： Faruk ozger Feyzi BASAR Department of Mathematics Fatih UniversityHadomky Campus

The domain of generalized difference matrix B（r, s） in the classical spaces L∞, e, and co was recently studied by Kirisci and Basar in [16]. The main goal of this article is to introduce the paranormed sequence spaces L∞（B,p）, c（B,p）, and co（B,p）, which are more general and comprehensive than the corresponding consequences of the matrix domain of B（r, s）, as well as other studies in literature. Besides this, the alpha-, beta-, and gamma-duals of the spaces L∞ （B, p）, c（B, p）, and co （B, p） are computed and the bases of the spaces c（B, p） and co （B, p） are constructed. The final section of this article is devoted to the cha.a.terization of the classes （λ（B, p）： μ） and （μ：λ（B, p））, where λ ∈ {c, co, L∞ } and μ is any given sequence space. Additionally, the cha.a.terization of some other classes which are related to the space of Mmost convergent sequences is obtained by means of a given lemma.

关键词： Matrix domain double sequential band matrices almost convergence para-normed spaces matrix transformations

Optimized Numerical Model Based Assessment of Wave Power Potential of Marmara Sea

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Journal of Ocean University of China 2019年第2期18卷 293-304页

作者： ABDOLLAHZADEHMORADI Yasin ozger Mehmet ALTUNKAYNAK Abdüsselam Hydraulics Division Department of Civil EngineeringIstanbul Technical University

Marmara Sea, located between Black Sea and Aegean Sea, is an important sea for ocean engineering activities. In this study, wave power potential of Marmara Sea was investigated using the third generation spectral wind-wave model MIKE 21 SW with unstructured mesh. Wind data was obtained from ECMWF ERA-Interim re-analyses wind dataset at 10 m with a spatial resolution of 0.1? for the period of 1994 to 2014. The numerical model was calibrated with measured wave data from a buoy station located in Marmara Sea. Mesh optimization was also performed to obtain the most suitable mesh structure for the study area. This study is the first that dealt with the determination of wave energy potential of Marmara Sea. The numerical model results are presented in terms of monthly, seasonal and annual average of wave power flux(k W m^(-1)). The maximum wave power flux is 1.13 kW m^(-1) and occurs in November. The overall annual mean wave power flux during 1994–2014 is found to be 0.27 kW m^(-1) in the offshore regions.

关键词： Marmara Sea MIKE 21 SW wave power potential ECMWF buoy wave data

Neuroprotective effect of systemic and/or intravitreal rosuvastatin administration in rat glaucoma model

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International Journal of Ophthalmology(English edition) 2016年第3期9卷 340-347页

作者： Metin Unlu Zeynep Aktas Pinar Uyar Gocun Sevil ozger Ilhan Murat ha.a.reisoglu Berati ha.a.reisoglu Department of Ophthalmology Erciyes University Schoolof Medicine Kayseri 38039 Turkey Department of Ophthalmology Gazi University School of Medicine Besevler Ankara 06560 Turkey Department of Pathology Gazi University School of Medicine Besevler Ankara 06560 Turkey Department of Pharmacology Gazi University School of Medicine Besevler Ankara 06560 Turkey

AIM： To evaluate the neuroprotective effect of rosuvastatin, in a rat experimental glaucoma model. METHODS： Ocular hypertension was induced in right eyes of Long-Evans rats （n=30） by cauterization of three episcleral veins. Left eyes were defined as controls. Rats were divided into five groups： oral rosuvastatin, intravitreal rosuvastatin, oral ＋intravitreal rosuvastatin, intravitreal sham and glaucoma without intervention. Rats were sacrificed at day 14. Retinal ganglion cell （RGC） number was assessed by histopathological analysis. Terminal deoxynucleotidyl transferase-mediated dUTP-nick end-labeling （TUNEL） staining and the expression of glial fibrillary acidic protein （GFAP） in RGC layer was also examined. RESULTS： A significant intraocular pressure （lOP） elevation was seen （P=0.002）. Elevated lOP resulted in a significant decrease in number of RGCs in group 5 （70.33 ±8.2 cells/mm2） when compared with controls （92.50 ±13.72 cells/mm2; P=0.03）. The RGC number in group 1 （92.4±7.3 cells/mm2） was significantly higher than group 5 （ρ=0.03）. The numbers of RGC in groups 2, 3 （57.3±8.2 cells/mm2, 60.5±12.9 cells/mm2） were comparable with that of group 5 （ρ=0.18 and P=0.31）. The apoptosis rates with TUNEL staining were also parallel to RGC number. Animals with experimentally induced glaucoma showed an increase in retinal GFAP immunoreacUvity. CONCLUSION： Decrease in RGC loss and apoptosis suggest the neuroprotective potential of oral rosuvastatin treatment in a rat model of ocular hypertension. Howeverintravitreal rosuvastatin showed a contrary effect and further studies are required.

关键词： KEYWORDS: rat glaucoma model retinal ganglion cellnumber rosuvastatin neuroprotection

Benign Giant Cell Tumor of the Foot Originating from Talonavicular Joint

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Open Journal of Orthopedics 2012年第2期2卷 56-58页

作者： ha.a. Cift Korhan Ozkan Serkan Senol Esat Uygur harzem ozger Department of Orthopaedic and Traumatology Goztepe Education and Research HospitalIstanbul Medeniyet UniversityİstanbulTurkey Department of Pathology Goztepe Education and Research HospitalIstanbul Medeniyet UniversityİstanbulTurkey Department of Orthopaedic and Traumatology İstanbul Faculty of MedicineIstanbul UniversityİstanbulTurkey

Benign Giant Cell Tumor is a relatively common benign lesion which usually appears as an enlarging painless mass and has a synovial origin. Although benign giant cell tumors generally involve tendon sheaths, they are infrequently documented in the foot. A 45 years old female presented with a complaint of a lump on the top of her left foot. Under general anesthesia with a pneumatic tourtniquet the mass excised with great care not to leave any residual tumor tissue that can cause recurrence. Benign giant cell tumor of the foot can be associated with talonavicular joint capsule which can be detected with MRI imaging and total excision of the lesion is mandatory to prevent recurrence.

关键词： Giant Cell Tumor Talonavicular Joint

The predictors of long-COVID in the cohort of Turkish Thoracic Society-TURCOVID multicenter registry:One year follow-up results

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Asian Pacific Journal of Tropical Medicine 2022年第9期15卷 400-409页

作者： Serap Argun Baris Oya Baydar Toprak Pelin Duru Cetinkaya Fusun Fakili Nurdan Kokturk Seval Kul Ozgecan Kayalar Yildiz Tutuncu Emel Azak Mutlu Kuluozturk Pinar Aysert Yildiz Pelin Pinar Deniz Oguz Kilinc Ilknur Basyigit hasim Boyaci Ismail hanta Neslihan Kose Gulseren Sagcan Caglar Cuha.a.oglu hacer Kuzu Okur ha.a. selcuk ozger Begum Ergan Mehtap hafizoglu Abdullah Sayiner Esra Nurlu Temel Onder Ozturk Tansu Ulukavak Ciftci Ipek Kivilcim Oguzulgen Vildan Avkan Oguz Firat Bayraktar Ozlem Ataoglu Merve Ercelik Pinar Yildiz Gulhan Aysegul Tomruk Erdem Muge Meltem Tor Oya Itil ha.a. Bayram Department of Pulmonary Medicine Faculty of MedicineKocaeli UniversityKocaeliTurkey Department of Pulmonary Medicine Faculty of MedicineCukurova UniversityAdanaTurkey Department of Pulmonary Medicine University of Health SciencesAdana City Training and Research HospitalAdanaTurkey Department of Pulmonary Medicine Faculty of MedicineGaziantep UniversityGaziantepTurkey Department of Pulmonary Medicine Faculty of MedicineGazi UniversityAnkaraTurkey Department of Biostatistics Faculty of MedicineGaziantep UniversityGaziantepTurkey Koc University Research Center for Translational Medicine(KUTTAM) Koc University School of MedicineIstanbulTurkey Department of Immunology Koc University Research Center for Translational Medicine(KUTTAM)Koc University School of MedicineIstanbulTurkey Department of Infectious Disease and Clinical Microbiology Faculty of MedicineKocaeli UniversityKocaeli Turkey Department of Pulmonary Medicine Faculty of MedicineFirat UniversityElazigTurkey Department of Infectious Diseases and Clinical Microbiology Faculty of MedicineGazi UniversityAnkaraTurkey Department of Pulmonary Medicine Faculty of MedicineDokuz Eylul UniversityIzmirTurkey Department of Pulmonary Medicine Bilecik Training and Research HospitalBilecikTurkey Department of Pulmonary Medicine Altunizade Acibadem HospitalIstanbulTurkey Department of Pulmonary Medicine Faculty of MedicineEge UniversityIzmirTurkey Department of Infectious Diseases and Clinical Microbiology Faculty of MedicineSuleyman Demirel UniversityIspartaTurkey Department of Pulmonary Medicine Faculty of MedicineSuleyman Demirel UniversityIspartaTurkey Department of Infectious Disease and Clinical Microbiology Faculty of MedicineDokuz Eylul UniversityIzmirTurkey Department of Internal Medicine Faculty of MedicineDokuz Eylul UniversityIzmirTurkey Department of Pulmonary Medicine Faculty of MedicineDuzce UniversityDuzceTurkey Department of Pulmonary Medicine Faculty of MedicineZonguldak Bulent Ecevit UniversityZongu

Objective:To evaluate long-term effects of COVID-19,and to determine the risk factors in long-COVID in a cohort of the Turkish Thoracic Society(TTS)-TURCOVID multicenter ***:Thirteen centers participated with 831 patients;504 patients were enrolled after *** study was designed in three-steps:(1)Phone questionnaire;(2)retrospective evaluation of the medical records;(3)face-to-face ***:In the first step,93.5%of the patients were hospitalized;61.7%had a history of pneumonia at the time of diagnosis.A total of 27.1%reported clinical symptoms at the end of the first ***(17.00%),fatigue(6.30%),and weakness(5.00%)were the most prevalent long-term *** incidence of long-term symptoms was increased by 2.91 fold(95%CI 1.04-8.13,P=0.041)in the presence of chronic obstructive pulmonary disease and by 1.84 fold(95%CI 1.10-3.10,P=0.021)in the presence of pneumonia at initial diagnosis,3.92 fold(95%CI 2.29-6.72,P=0.001)of dyspnea and 1.69 fold(95%CI 1.02-2.80,P=0.040)fatigue persists in the early-post-treatment period and 2.88 fold(95%CI 1.52-5.46,P=0.001)in the presence of emergency service admission in the post COVID *** step 2,retrospective analysis of 231 patients revealed that 1.4%of the chest X-rays had not significantly improved at the end of the first year,while computed tomography(CT)scan detected fibrosis in 3.4%.In step 3,138(27.4%)patients admitted to face-to-face visit at the end of first year;at least one symptom persisted in 49.27%*** most common symptoms were dyspnea(27.60%),psychiatric symptoms(18.10%),and fatigue(17.40%).Thorax CT revealed fibrosis in 2.4%***:COVID-19 symptoms can last for extended lengths of time,and severity of the disease as well as the presence of comorbidities might contribute to increased ***-term clinical issues should be regularly evaluated after COVID-19.

关键词： Long COVID-19 Dyspnea Fatigue Comorbidity

Post-discharge mortality in the first wave of COVID-19 in Turkey

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Asian Pacific Journal of Tropical Medicine 2022年第11期15卷 479-484页

作者： Fusun Fakili Pelin Duru Cetinkaya Oya Baydar Serap Argun Baris Nurdan Kokturk Seval Kul Oguz Karcioglu Pinar Aysert Yildiz Ilim Irmak Yonca Sekibag Emel Azak Sait Mulamahmutoglu Caglar Cuha.a.oglu Bugra Kerget Burcu Baran Ketencioglu ha.a. selcuk ozger Gulcihan Ozkan Zeynep Ture Merve Ercelik Tansu Ulukavak Ciftci Ozlem Alici Esra Nurlu Temel Ozlem Ataoglu Neslihan Kose Muge Meltem Tor Gulsah Gunluoglu Sedat Altin Onder Ozturk Pinar Yildiz Gulhan Ilknur Basyigit hasim Boyaci I Kivilcim Oguzulgen Sermin Borekci Bilun Gemicioglu Ismail hanta hacer Kuzu Okur Gulseren Sagcan Metin Akgun Ali Fuat Kalyoncu Oya Itil ha.a. Bayram Department of Pulmonary Medicine Faculty of MedicineGaziantep UniversityGaziantepTurkey Department of Pulmonary Medicine University of Health SciencesAdana City Training and Research HospitalFaculty of MedicineCukurova UniversityAdanaTurkey Department of Pulmonary Medicine Faculty of MedicineCukurova UniversityAdanaTurkey Department of Pulmonary Medicine Faculty of MedicineKocaeli UniversityKocaeliTurkey Department of Pulmonary Medicine Faculty of MedicineGazi UniversityAnkaraTurkey Department of Biostatistics Faculty of MedicineGaziantep UniversityGaziantepTurkey Department of Pulmonary Medicine Halil Sivgin Cubuk State HospitalAnkaraTurkey Department of Infectious Disease Faculty of MedicineGazi UniversityAnkaraTurkey Department of Pulmonary Medicine Faculty of MedicineHacettepe UniversityAnkaraTurkey Department of Pulmonary Medicine Cerrahpasa Faculty of MedicineIstanbul University−CerrahpasaIstanbulTurkey Department of Infectious Disease and Clinical Microbiology Faculty of MedicineKocaeli UniversityKocaeliTurkey Department of Pulmonary Medicine Altunizade Acibadem HospitalIstanbulTurkey Department of Pulmonary Medicine Faculty of MedicineAtaturk UniversityErzurumTurkey Department of Pulmonary Medicine Faculty of MedicineErciyes UniversityKayseriTurkey Department of Pulmonary Medicine Maslak Acibadem HospitalIstanbulTurkey Department of Infectious Disease and Clinical Microbiology Faculty of MedicineErciyes UniversityKayseriTurkey Department of Pulmonary Medicine Faculty of MedicineDuzce UniversityDuzceTurkey Department of Infectious Disease Faculty of MedicineTurkiye Gazetesi Private HospitalIstanbulTurkey Department of Infectious Diseases and Clinical Microbiology Faculty of MedicineSuleyman Demirel UniversityIspartaTurkey Department of Pulmonary Medicine Bilecik Training and Research HospitalBilecikTurkey Department of Pulmonary Medicine Faculty of MedicineZonguldak Bulent Ecevit UniversityZonguldakTurkey Department of Pulmonary Medicine Universi

Objective:To determine post-discharge mortality and associated factors of the first-wave multicenter Turkish Thoracic Society(TTD)-TURCOVID ***:In this retrospective cohort study,we analyzed the data of 18 of 26 centers included in the first TTD-TURCOVID study,and 1112 cases diagnosed with COVID-19 between 11 March and 31 July 2020 participated in the *** causes of death after COVID-19 discharge were ***:The mean age of the patients was(51.07±16.93)years,with 57.6%male *** the cohort group,89.1%of COVID-19 treatment locations were hospital wards,3.6%were intensive care units(ICUs),and 7.2%were community *** the longterm follow-up,the in-hospital mortality rate was 3.6%(95%CI 2.6-4.8),the post-discharge mortality rate was 2.8%(95%CI 1.9-3.9),and the total mortality was 6.3%(95%CI 5.0-7.8).After discharge,63.3%of mortality overall occurred during the first six *** rates in post-discharge follow-ups were 12.7%(95%CI 8.0-30.6)in cancer patients,10.8%(95%CI 6.3-22.9)in chronic obstructive pulmonary disease patients,11.1%(95%CI 4.4-22.7)in heart failure patients,7.8(95%CI 3.8-14.3)in atherosclerotic heart disease patients,and 2.3%(95%CI 0.8-5.6)in diabetes mellitus *** smokers/ex-smokers,the all-mortality rates were higher than in ***:This multicenter study showed that patients over 65 years of age,males,former/active smoker,ICU stay,lung,heart disease,and malignancy should be followed up for at least the first six months after discharge due to COVID-19.

关键词： COVID-19 Post-discharge Mortality Comorbidity