Sürdürülebilir Kalkınma Amaçları
Yazarlar
- Kaygusuz, Abdullah(35)
- Sipahi, Ferkan(35)
- Karsli, Orhan(34)
- Dokuz, Abdurrahman(30)
- Duran, Celal(30)
- Kandemir, Raif(29)
- Ozdes, Duygu(28)
- Maden, Nafiz(27)
- Uzun, Sevda(27)
- Merdan, Mehmet(26)
- Vural, Alaaddin(26)
- Öztürk, Serkan(25)
- Araz, Onur(24)
- Kulakaç, Nurşen(24)
- Ashyralyyev, Charyyar(23)
- Yildiz, Salih(23)
- Yilmaz, Ozgur(23)
- Doğan, Kadir Caner(21)
- Arslan, Mehmet(20)
- Aydin, Faruk(20)
- Doğru, Bülent(20)
- Bayraktar, Alemdar(19)
- Kankal, Murat(19)
- Ayaydin, Hasan(18)
- Baltaci, Cemalettin(18)
- Yolcu, Halil(18)
- Cakir, Tufan(17)
- Cengiz, Ekrem(17)
- Demir, Selim(17)
- Gücer, Mehmet Ali(17)
- Akaryali, Enver(16)
- Artan, Seyfettin(16)
- Hayaloğlu, Pınar(16)
- Kaya, Afşin Ahmet(16)
- Tosunoğlu, Büşra(16)
- Uysal, Ibrahim(16)
- Kurt, Kemal(15)
- Ozturk, Samet(15)
- Reis, Hatice Catal(15)
- Aksakal, Vecihi(14)
Yayınlar
- MakaleYalnız künye2021Bireysel Yatırım Kararlarında Davranışsal Eğilimlerin Ölçülmesi: Gümüşhane İlinde Bir Araştırma
Çam, Alper Veli; Hırka, Emre
Geleneksel finans modelleri, bireysel yatırımcıların yatırım kararlarını verirken rasyonel olduklarını, yüksek getiriyi hedeflediklerini, piyasaların etkin olduğunu, tüm yatırımcıların aynı beklentilere sahip olduğunu ve menkul kıymet fiyatlarının tesadüfi oluştuğunu varsaymaktadır. Ancak, bu ve benzeri teoriler piyasada meydana gelen birçok olayı açıklamakta yetersiz kaldığı yönünde eleştirilmiştir. Bu durum davranışsal finans denilen yeni bir yaklaşımın ortaya çıkmasına neden olmuştur. Davranışsal finans teorisi, duyguların bireylerin davranışlarını etkilediğini ve bu nedenle bireylerin rasyonel karar veremediğini varsaymaktadır. Literatürde, davranışsal finans konusunun çoğunlukla bireysel menkul kıymet yatırımcıları üzerinde durduğu gözlemlenmiştir. Altın yatırımcıları finansal piyasaların önemli oyuncularından biridir. Yapılan literatür taramasında finansal piyasaların önemli oyuncularından olan altın yatırımcıları ile ilgili davranışsal finans çalışmalarına çok nadir rastlanmıştır. Bu doğrultuda çalışma, altın yatırımcılarının davranışlarını araştırmak amacıyla hazırlanmıştır. Çalışma kapsamına Gümüşhane’de yaşayan ve altın yatırımda bulunan bireysel altın yatırımcıları alınmıştır. Çalışmada, altın yatırımcılarına yönelik anket uygulanmıştır. Uygulamada 405 yatırımcının verileri SPSS 24 programında analiz edilmiştir. Analiz yöntemleri olarak frekans analizi, geçerlilik analizi ve varyans analizi kullanılmıştır. Çalışma sonucunda test edilen tüm hipotezler kabul edilmiştir.
AtıfTR Dizin2
İncele - MakaleYalnız künye2021Akademisyenlerin Kariyer Memnuniyeti Düzeylerine, Çalışma Ortamı Memnuniyeti ve Organizasyona Güven Değişkenlerinin Etkisi: Kişisel Gelişim Düzeyinin Aracı Rolü
Durmuş, İbrahim; Akyüz, Ahmet Mutlu
Bu araştırmada akademisyenlerin kariyer memnuniyeti düzeyine etki edebilecek faktörlerin belirlenmesi amaçlanmaktadır. Araştırmada alanyazında eksikliği hissedilen "çalışma ortamından memnuniyet", "organizasyona güven" ve "kişisel gelişim" değişkenlerinin, akademisyenlerin kariyer memnuniyet düzeyleri üzerindeki doğrudan ve dolaylı etkilerine odaklanılmıştır. Araştırmaya ilişkin veriler dört devlet üniversitesinden toplam 587 akademisyenden elektronik anket yöntemi ile elde edilmiştir. Geliştirilen hipotezler, Kısmi En Küçük Kareler (Partial Least Squares-PLS) algoritması kullanılarak "yapısal eşitlik modellemesi" ile test edilmiştir. Araştırma sonuçları doğrudan ve toplam etkiler açısından değerlendirilmiştir. Buna göre, akademisyenin çalışma ortamı memnuniyetinin, kişisel gelişim ve kariyer memnuniyeti düzeyini artırdığı gözlemlenmiştir. Ayrıca akademisyenin kişisel gelişimi de kariyer memnuniyeti düzeyini artırmıştır. Araştırmada akademisyenin organizasyonuna olan güveni, kişisel gelişim üzerinde anlamsız bir etki oluşturmaktadır. Ayrıca akademisyenin organizasyona güveni, kariyer memnuniyeti düzeyini de artırmaktadır. Araştırma modelindeki dolaylı etkiler incelendiğinde; çalışma ortamı memnuniyetinin kariyer memnuniyeti üzerindeki etkisinde, kişisel gelişim değişkeni aracı bir etkiye sahiptir. Bununla birlikte organizasyona güven değişkeninin kariyer memnuniyeti değişkeni üzerindeki etkisinde, kişisel gelişim değişkeninin aracı etkisi olmadığı gözlemlenmiştir.
AtıfTR Dizin3İncele - MakaleYalnız künye2021An Analysis of the Pictures in Physics Textbooks in Terms of Gender Roles
Takaoglu, Zeynep Baskan
Education is one of the fundamental needs of individuals. However, sometimes undesirable attitudes such as gender discrimination can be taught through textbooks or other resources in educational activities. This study aimed to explore the images in textbooks in terms of gender roles. Physics textbooks were analyzed considering the use of images of men and women, the professions they belong to, and the people, places, and actions in which they are shown together. Physics textbooks used in the 9th, 10th, 11th, and 12th grades in Gumushane in the 2018-2019 academic year were examined. In this research, conducted in a qualitative research design, the document analysis technique was used for the data collection. The data were analyzed with the content analysis technique. The results showed that the images in physics textbooks include more male images, and the male gender is more often represented in professional professions and artists, and men are often depicted alone or as public actors, with professional staff, and outdoors. Female figures, on the other hand, are shown less in the textbooks, and they have taken on the duties assigned to women by the society, which are mostly inside the house. Based on this, the results reveal that Physics textbooks show a favorable position for men and that and the representation of gender roles is applied unequally. Moreover, it is also observed that traditional gender roles are displayed in textbooks through hidden curricula.
AtıfTR Dizin5
İncele - MakaleYalnız künye2021Scopus SJRQ3The simple right ventricle contraction pressure index: A novel method for echocardiographic assessment of right ventricle dysfunction in acute pulmonary embolism
Acar, Emrah; Ozgul, Neryan; Izci, Servet
Purpose The simple right ventricular contraction pressure index (sRVCPI) is a new echocardiographic variable for estimating the right ventricular systolic function. Our aim was to investigate the association between the sRVCPI, the pulmonary embolism severity index (PESI), and mortality rate in acute pulmonary embolism (APE). Methods We included in this study 116 patients diagnosed with APE by pulmonary computed tomography angiography or ventilation/perfusion scintigraphy. They were divided into two groups based on the simplified PESI < or >1. Tricuspid regurgitation velocity and TAPSE were measured and used for sRVCPI calculation. Results Mortality was higher in patients with a higher sRVCPI (P < .001). In receiver operating characteristic (ROC) curve analysis using a cut-off level of 312.8 mm Hg mm, sRVCPI predicted mortality with a sensitivity of 86.8% and specificity of 69.5% (ROC area under curve: 0.712; 95%CI 0.597-0.882; P < .001). The sRVCPI was lower in the sPESI >1 than in the sPESI <1 group (364.3 +/- 31.9 vs 511.6 +/- 26.1; P < .001). There was an inverse correlation between sRVCPI and the sPESI score (-0.784; P < .001). Conclusion The sRVCPI correlated with the sPESI score and was associated with mortality in patients with APE. This easily measurable variable may be used to predict short-term mortality in APE patients.
- BildiriYalnız künye2021Scopus SJRQ2Evaluation of Vibrational Spectroscopy Techniques (NIR, MIR, Raman) Combined with Chemometrics in Detecting Adulteration of Essential Oils.
Menevseoglu, Ahmed; Gumus, Cansu
- BildiriYalnız künye2021BroomyCell: An Introductory Educational Software for Neuroscience
Ozcan, Zubeyir; Yildirim, Omer; Kayikcioglu, Temel
Nerve cells are the basic building blocks of the nervous system. Therefore, the first step in neuroscience education is the introduction of nerve cells. However, both the complexity of nerve cells and the difficulty of their experimental examination make it difficult to test nerve cells practically. Therefore, simulation of nerve cells is found to be significantly effective. The difficulty of examining this type of cells experimentally shows its effect on neuroscience education. This brings to the fore the necessity of virtual laboratory environments designed for use in education. In this study, BroomyCell, which is designed by us as an introductory educational software in neuroscience education, was introduced. With this desktop application, it is aimed that potential neuroscientists learn their fields experimentally and without the need for a physical laboratory.
- MakaleYalnız künye2021The Slogan Effect: The Power Of Brand Discourse In Liking And Purchasing Behaviour
Aslan, Emre S.; Demirel, Cagatay
Discourses have been a determiner effect through human history. However, only with the development of communication technologies and globalization of trade the strategic importance of discourse has increased. Especially establishments comprehending the importance of branding have been searching for a strong discourse. The most effective and catchy of those discourses are called slogans. Slogans present the power of brand discourse while determining the superiority of the brand in commercial wars. Especially global brands are aware of the powerful effect of slogans. Based on this awareness, while they conduct their communication efforts, they endeavour to have strong slogans. When the literature is inspected it is seen that there are not enough studies regarding slogans which have a strong effect on both commercial and social life. This study is conducted both with the aim of satisfying this need and revealing the power of brand discourse in liking and purchasing behavior. Within this aim, an experimental study is applied, and it is tried to measure the effect of slogan liking to slogan purchasing behaviour, brand liking, brand purchasing behaviour, brand and slogan relationship liking and purchasing behaviour. In this study, a quantitative research method is applied, and the data is collected through questionnaires; the gathered data were analyzed in terms of frequency, regression and correlation. According to the results slogan liking greatly affects all the variables presented in the research model. Thus, it is concluded that brand discourse has a very powerful effect.
AtıfWoS2İncele - MakaleYalnız künye2021Scopus SJRQ3Investigation of fly ash added light concretes with respect to gamma radiation transmission properties of 133Ba and 137Cs
Külekçi, Gokhan
With the help of the developing concrete technology, light concrete and fly ash may be used in several concrete-related fields. To provide protection from radiation, which is one of the current problems of the world, several researchers have used fly ash, but very few researchers have worked on light concrete. To be protected from the effects of radiation, researchers have examined gamma radiation absorption properties by using heavy concrete and heavy aggregates. In this study, by using Class C fly ash at the doses of 30-50-100% instead of cement, three different light concretes were prepared. Density and compressive strength experiments were conducted on the composite blocks prepared with dimensions of 50*50*50 mm, and linear absorption coefficients (cm(-1)), mass attenuation coefficients (MAC) and Tenth value layer (TVL) radiation interaction parameters were measured. Radiation interaction parameters were obtained using an HP Ge gamma detector. For radiation measurements, four different photon energies as 583 keV (Ba-133), 609 keV (Ba-133), 661 keV (Cs-137) and 911 keV (Ba-133) were used. As a result of the analyses, it was determined that compressive strength decreased as the fly ash content increased, the lowest compressive strength values were obtained in the samples containing 100% fly ash among the prepared composites, and density increased as the fly ash content decreased. It was observed that, in the prepared composites, as the energy levels increased, the linear absorption coefficients also increased, and the samples containing 30% fly ash provided the best TVL value on the energy level of 911 keV. With this study, it was revealed that fly ashes that are used in many fields could be used as a radiation shield. Additionally, with this study, due to not using heavy aggregates and due to the production of light concrete in the production of radiation shields, the cost of shield production will significantly decrease.
AtıfWoS9OpenAlex12İncele - MakaleYalnız künye2021A SITUATION ANALYSIS ON THE PERCEPTION OF SUSTAINABLE MANAGEMENT OF NON-WOOD FOREST PRODUCTS IN TURKEY
Komut, Osman
One of the most important stakeholders in the sustainable management of non-wood forest products (NVVFP) is the forestry organization employees. In this study, the analysis of the perception, awareness and opinions of the forestry organization employees concerning the sustainable management of NWFPs was determined as the main aim. The study was conducted with a research pattern consisting of a questionnaire and semi-structured questions for employees at the level of employees, forest guards, office clerks and engineers within two different Regional Directorates of Forestry in Turkey. Mann Whitney U and Kruskal Wallis H statistical analysis tests were utilized for determination of the differences of opinions based on the variables. In the research, statistically significant (p<0.05) differences of opinion were determined based on the sub-groups of variables of the regional directorate, activity, receiving training, occupation, educational background, and gender. Research results have proved that the number of NWFPs which are evaluated economically and are harvested in a controlled manner is very low. It has been determined that the forestry organization employees don't find the work on NWFP adequate and they are concerned about the sustainable management of NWFPs.
- MakaleYayıncıda açık erişim2021THE INHERITANCE OF BAGHDAD GOVERNOR AHMED PASHA (1692-1694)
Türkal, Merve Karacay
The subject of the study consists of the life of Ahmed Pasha, who served as the governor in Baghdad between 1692-1694, and the translation and evaluation of his inheritance book. Inheritance notebooks, which are among the historical documents of the Ottoman Empire and have an important position, enable to enlighten the socio-economic structure of the period. At the same time, inheritance notebooks belonging to these people are of great importance in terms of biography studies, as they provide information about the wealth of the individuals they belong to. The aim of the study is to contribute to the scientific studies on the economic and social life of the Ottoman Empire in the 17th century. Presidency of State Archives BOA in the Ottoman Archives D.BSM. MHF. d., 12374, BOA, D.BSM. MHF. d., 12375 and BOA, D.BSM. MHF. d., 12377 registered with the numbers three separate notebooks belonging to Ahmed Pasha were translated and evaluated. This article consists of three parts: Introduction, Life of Ahmed Pasha and Inheritance of Ahmed Pasha. Based on his belongings recorded in the book, it was tried to determine the value of the wealth of an Ottoman pasha who fulfilled his duty as a governor in Baghdad in the last quarter of the 17th century. Depending on the findings determined, inferences were made about the status, tastes, preferences, in short, his social life of Pasha. Thus, besides the daily life belongings of a governor serving in the Ottoman state, a panorama of the books he read, the variety of his wealth, his clothing, household items and furnishings and war equipment is presented.
AtıfTR Dizin6İncele - MakaleYalnız künye2021Investigation of Effect of Dew Point Temperatures on Design of Condensing Heat Recovery Units According to Fuel Types
Terhan, Meryem
In this study, dew point temperatures of water and sulphuric acid vapour in flue gas are predicted as theoretical for fuels types such as coal, fuel oil, natural gas, LPG, wood with the different cities in Turkey. The factors like the excess air coefficient, relative humidity rate and the altitude of the city affected by the dew point temperatures and the mole ratios of water and sulphuric acid vapour in flue gas are studied. According to the results of the study, while the water dew point temperature changes for coal, wood, fuel oil, natural gas and LPG, over the range 30-40 degrees C, 40-50 degrees C, 37-50 degrees C, 44-60 degrees C and 41-56 degrees C, respectively; the acid dew point temperature waves to 125 degrees C from 140 degrees C for coal types and to 131 degrees C from 145 degrees C for fuel oil types in Turkey. To predict the condensing zone, a condensing economizer for a natural gas-fired boiler in a heating system is designed with Finite difference method. According to the results of the design, while the first 100 m of the heat exchanger tube is non-condensing zone, the only 10 m is the condensing zone.
AtıfWoS1TR Dizin1İncele - MakaleYalnız künye2021THE RELATIONSHIP BETWEEN IN FINANCIAL MARKETS: A RESEARCH ON TURKISH FOOTBALL
Koc, Pinar
The purpose of this paper is to analyze the relationship between risk and stock return on the basis of Turkish football teams traded in financial markets. The study consists of two stages. In the first stage, the most suitable GARCH models for the return series were estimated. In the second stage, the estimated GARCH models were used as risk indicators, and the causality relationship between risk and return was tested with the Fourier granger causality test. According to the results of the study, the best model for Fenerbahce is ACGARH (1,1,1) model, the best model Galatasaray is EGARCH model and the best model forTrabzonsopr is APGARCH (1,1,1). In addition, there is causality relationship from risk to stock return.
- MakaleYalnız künye2021DETERMINATION OF THE HONEY PRODUCTION AREAS WITHIN LAND USE TYPES: A CASE STUDY TERCAN, TURKEY
Cakir, Gunay
Forestry makes decisions based on one of the tactical planning applications for decades' years. Especially forested areas and rangeland provide very wide support to the world in terms of fresh air and food. In particular, World areas provide a wide range of support for living things in terms of naturalness and nutrition. Honey is not only a source of healing for humans but also the richness of the natural. Honey producing activities (beekeeping) was generally done in the open areas in and around the forest or rangeland. This study was carried out in Tercan Forest Planning Unit (FPU) in 2013 to determine the areas of beekeeping with the help of high-resolution aerial photographs. Placed hive areas for honey production had been identified in Tercan FPU. The distances of honey production areas and other areas to land use types were determined in GIS environment. Of these 95 beehive areas had found in Tercan Forest Planning Units. These hive areas were produced to buffer zone map that is respectively 0-500 m, 501-1000 m, 1001-1500 m and 1501-2000 m. Analysis to the distance of the hive areas with land use maps has been determined in GIS environment. The estimated amount of honey production has been tried to be rubbed over honey hive numbers. The location of honey casings is generally found in the land use classes, which are close to freshwater.
- MakaleYalnız künye2021THE EVALUATION OF SOME FACTORS AFFECTING THE QUALITY OF RAW MATERIALS IN MICRO-SCALED FOREST INDUSTRY ENTERPRISES
Komut, Osman
Forest industry enterprises that process round industrial wood are the biggest consumers of the forestry sector. In this study, micro-scale forest industry enterprises that process round industrial wood are investigated. Questionnaires based on face-to-face interviews were utilized as a data collection tool. The raw material storage areas of 48 enterprises, visited during the study, were subjected to direct observation and examination in terms of storage methods, conditions and damages in logs. The ratio of the enterprises participating in the total number of enterprises in the study area occurred as 64%. The relationships between the defined variables were analyzed with the Chi-square independence test. The analysis of variance was used to determine the relationship between independent variables. The results showed that raw material supply methods of enterprises differ, and they vary as the enterprise size grows. The annual average revenue was a variable that caused statically significant differentiation (p<0.05) in the raw material supply methods between enterprises. The results proved that the supply of raw materials with the stumpage sale method increased the risk of bark beetle damage in logs. Improper storage methods and conditions were identified as causes of significant blue discoloration damage in coniferous tree logs.
- MakaleYalnız künye2021Scopus SJRQ3THE ROLE OF GENDER IN THE INVESTIGATION AT REGIONAL LEVEL FOR TURKEY
Çelik, Orkun; Erer, Elif
We aim to explore the role of gender in the government expenditure and unemployment nexus at regional level for Turkey. For this aim, we use the dataset covering the period 2004-2019 for 26 NUTS-2 regions in Turkey and employ a panel ARDL approach. The obtained empirical findings show that government expenditure and gross domestic product per capita provide overall, female, and male unemployment rates to diminish in the long term, which means the Keynesian approach is valid on the long term. Nevertheless, on the short term, government expenditure induces rises in the male and female unemployment rates. This result indicates the validation of the Abrams Curve Hypotesis in male and female unemployment rates on the short term. Also, inflation rate increases overall and male unemployment rate on the long term, but having significant and positive impact on only female unemployment rate on the short term. All these findings show that gender has a significant role in this nexus. The expected contribution of this study to literature is to investigate the impact of government expenditure on unemployment by gender at regional level for Turkey. We are of opinion that our empirical findings can guide policy makers in active plans fighting unemployment.
- MakaleYalnız künye2021Scopus SJRQ3Time interval between E and E′ waves can predict complicated clinical course in patients with acute pulmonary embolism
Acar, Emrah; Kilicgedik, Alev; Izci, Servet; Inanir, Mehmet; Yilmaz, Mehmet Fatih; Gokce, Mustafa; Izgi, Ibrahim Akin; Kirma, Cevat
Purpose Acute pulmonary embolism is a life-threatening cardiothoracic emergency leading to right ventricle systolic and diastolic dysfunction. In the present study, we investigated the right ventricle diastolic function and its predictive value in patients with acute pulmonary embolism. Material and methods Were prospectively recruited in this study 621 patients diagnosed with acute pulmonary embolism between December 2015 and June 2019. Among them, 173 were excluded, leaving 448 patients for follow-up. Transthoracic echocardiography was performed for the evaluation of the right ventricle systolic and diastolic indices. At 30-day follow-up, the patients were allocated either into the benign or in the complicated clinical course group. Results The group with complicated clinical course had higher value of pulmonary artery systolic pressure (PASP), right/left ventricle diameter ratio, E-wave velocity, E/A ratio, A ' wave velocity, E/E ' ratio, and time interval between E and E ' waves (P < .05), but lower values of tricuspid annular plane systolic excursion, A-wave velocity, isovolumetric relaxation time, deceleration time, E ', and E '/A ' (P < .05). Complicated clinical course was associated with shorter isovolumetric relaxation time (r = .564, P < .001), E/E ' (r = .495, P < .001), and TE-E ' (r = .596, P < .001). Receiver operator characteristic curve analysis showed that TE-E ' had the largest area under curve (TE-E ' 0.82, IVRT 0.77, E/E ' 0.72). A cut-off value of TE-E ' = 70 milliseconds had an 81.1% sensitivity and 71.4% specificity for the prediction of the complicated clinical course. Conclusion The assessment of the right ventricle diastolic function could predict the complicated clinical course in patients with acute pulmonary embolism.
AtıfWoS3OpenAlex3
İncele - MakaleYalnız künye2021Scopus SJRQ1Rationally decreasing the number of drugs seems to be a useful therapeutic approach in older adults: 6-month follow-up study
Idil, Eral; Aydin, Ali Ekrem; Bulut, Esra Ates; Isik, Ahmet Turan
Aims: Older adults are at risk for polypharmacy, which has multidimensional safety, clinical and economic implications. Therefore, the optimization of drug therapy is one of the critical components of geriatrics clinical practice. This study is aimed to investigate the effect of drug rationalization on comprehensive geriatric assessment(CGA) parameters. Materials and Methods: The study was a retrospective and longitudinal study examining the effect of change in drug number on functionality and physical performance. A total of 515 patients were included in the study. Detailed medication history, laboratory findings, CGA parameters were recorded in the first admission. Polypharmacy was accepted as concurrent usage of five or more drugs. Medications of each patient were reviewed with the guidance of CGA and Beers Criteria. Results: The mean age of patients was 74.13 +/- 7.29 years, and 68.7% were female. The baseline mean number of drugs was 5.11 +/- 3.34. The polypharmacy group(269 patients) had a higher rate of geriatric syndromes and lower CGA scores in the first admission. After optimization of medications, the mean drug number decreased to 4.76 +/- 2.72. Depression, mobility and nutritional scores improved at the end of six months in the patients whose total number of drugs decreased, while global cognition, activities of daily living scores, and gait speed were preserved. Increasing the number of drugs was associated with lower mobility and functionality. Conclusion: Drug rationalization guided with CGA improves the nutritional, physical, and psychosocial status of geriatric patients. Thus, medication reviews have key importance in the management of older patients.
AtıfWoS17OpenAlex19İncele - MakaleYalnız künye2021Scopus SJRQ2Osteoclastic activity in chronic otitis media with cholesteatoma-related bone destruction
Özgur, A.; Yemis, T.; Basbulut, E.; Turgut, N. F.; Özdemir, D.; Akgul, G.; Mehel, D. M.; Celebi, M.
Background Cholesteatoma-related bone destruction is the cause of many complications due to chronic otitis media. This study aimed to evaluate osteoclastic activity in cholesteatoma-related bone destruction using tartrate-resistant acid phosphatase 5b, an enzyme specific to osteoclastic activity. Method Seventy-two patients diagnosed with chronic otitis media were included in this study and were divided into two groups: with and without bone destruction. The blood serum and tissue tartrate-resistant acid phosphatase 5b levels from both groups were compared. Results There were no significant differences in the level of serum enzymes between both groups. However, in tissue samples, tartrate-resistant acid phosphatase 5b levels were significantly lower in the bone destruction group than the group without bone destruction. Conclusion This study determined that the level of tartrate-resistant acid phosphatase 5b, a specific enzyme for osteoclastic activity in cholesteatoma-related bone destruction, is locally decreased. This data suggests that osteoclastic activity may decrease in cholesteatoma-related bone destruction. However, further experimental and clinical studies are required to clarify this highly complex mechanism.
AtıfWoS4OpenAlex4İncele - MakaleYalnız künye2021Scopus SJRQ3Comparison of the effects of operating microscopes with light emitting diode and halogen light source on the eye: a rabbit study
Aydin, Bahir; Ozgur, Armagan; Ozdemir, Huseyin Baran; Inan, Mehmet Arda; Atalay, Hatice Tuba; Bayrakceken, Kemal; Ozmen, Mehmet Cuneyt; Ucgul, Ahmet Yucel; Gocun, Pinar Uyar
Purpose To evaluate the potential toxicity of operation microscopes with halogen and light emitting diode (LED) light source on the rabbit eyes. Materials and methods Thirty-two eyes of 16 male New Zealand pigmented rabbits were involved in the study. The rabbits were divided into two groups according to the type of light source applied. Only one eye of each rabbit was exposed to illumination light, unexposed fellow eyes served as the control group. Experimental groups included group 1 exposed to halogen light for 2 h and evaluated 1 day and 1 week after the illumination, group 2 exposed to LED light for two hours and evaluated 1 day and 1 week after the illumination. On the first and seventh days after exposing the light, we evaluated the rabbit corneas using in vivo confocal microscopy (IVCM). At the end of the seventh day, the Hematoxylin-eosin staining and TUNEL staining were performed to investigate the presence of apoptosis in the retina and retina pigment epithelium. Results Early IVCM findings revealed corneal epithelial cell ovalization and indistinct intercellular borders in the halogen light group. We also observed more increase in the keratocyte density index (23.7% vs 14.1%, p = 0.001, respectively) and the Bowman reflectivity index (12.4% vs 4.1%, p = 0.001, respectively) at first day of the light exposure in halogen light group compared to LED light group. However, late IVCM indicated that these findings disappeared one week later. No apoptosis was observed in the corneal and retinal layers in early and late examination groups. Conclusion The present experimental study demonstrated that both halogen and LED lights, which were commonly used for microscopic eye surgery, had no sustained adverse effect on the cornea and retina of the rabbits; however, halogen light had a temporary adverse effect on corneal epithelium and stroma, which resolved within 1 week.
AtıfWoS2OpenAlex5İncele - MakaleYalnız künye2021Scopus SJRQ1Challenges of Setting up a Lower Extremity Reconstruction Practice in a Constrained Environment
Datli, Asli; Karasoy, Ismail; Genc, Yucel; Pilanci, Ozgur
Background Microsurgical lower extremity reconstruction remains challenging, especially when resources are limited such as lack of proper equipment, human resources, administrative support, and located in a remote area far from tertiary care. Nevertheless, reconstructive solutions are required, especially when in urgent trauma situations. In this article, we evaluate ways of overcoming challenges and issues that should be considered in a newly established unit by sharing our initial lower extremity reconstruction experience. Methods We report a local hospital's initial lower extremity reconstruction experience in February 2017 to January 2018. Through a total of seven patients, we tried to enhance the environment, instruments, nurses' contribution, and perspective of the peers and community in terms of factors related to the surgeon, hardware, environment, supporting faculty, reimbursement, and patients. Results Four patients underwent reconstruction with a freestyle propeller flap and three with an anterolateral thigh flap; in one case, a superficial circumflex iliac artery perforator flap was chosen to salvage partial flap necrosis. Increased experience of the surgeon, new equipment, continuing nurse/patient education, and collaborating with other departments allowed us to choose more challenging flaps and be more meticulous while decreasing the operation time and hospital stay. Conclusion To start a lower extremity reconstruction practice in a resource-poor environment, the surgeon needs to evaluate the relevant factors; moreover, he or she should continuously improve them until a working methodology is achieved. Despite all the challenges, the adaptations learned at this center can be applied to other local hospitals around the world to set up a lower extremity reconstruction practice and improve its outcomes.
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