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Küresel İklim Değişikliğinin Arktik Okyanusu’na Jeopolitik Etkisi
No full textSanayi Devrimi neticesinde insanlığın enerji ihtiyaçlarını karşılayabilmek için yeraltındaki fosil yakıtlar kullanmasıyla dünya yeni bir döneme girmiştir. Günümüzde yaşadığımız ve hayatın hemen hemen her alanında etkilerini gözlemlediğimiz iklim krizine yol açan başlıca faktörlerden birisi olan bu olgu, üretim biçimlerinden tüketime, tüketimden lojistiğe hayatın dinamiklerinin tüm yapı taşlarını etkileyip dünyanın yeni gereksinimlere uyum sağlamasını zorunlu hale getirmektedir. Geçmişten bugüne kadar insanlığın çağlar boyu ortak değeri olan doğayı korumak ve sürdürülebilir kılmak için iklime uyum sağlama süreci, kapitalizmin doğayı tahrip etmesi ve bu konuda farkındalığın artması ile yeni bir boyut kazanmaktadır. Yeni sürecin ekonomik ve sosyolojik boyutu kadar jeopolitik etkilerinin olması da kaçınılmaz bir gerçekliktir. Söz konusu jeopolitik etkiler hayata olduğu kadar kuramlara da yeni bir boyut kazandırma ve revizyon ihtiyacı doğurmuştur. Bu gerçekliğin yeni dönemde Dünya lojistik rotalarına, limanlarına ve stratejik bölgelerine yeni bir boyut kazandıracağı değerlendirilebilir. Nicholas John Spykman, Dünyada hegemon güç olabilmek için Avrasya’nın kontrolünün mecburiliğini öne sürmektedir. Bu çalışma, Spykman’ın Kenar Kuşak kuramı söyleminin, öngörülen iklim değişikliğinin bir sonucu olarak coğrafyanın değişime uğramayacağı sabit verisinin aksine, değişime uğrayarak farklı bir boyuta evrileceği değerlendirmesinde bulunmaktadır. Arktik bölgesinde buzulların erimesiyle birlikte hem Spykman’ın belirttiği kuram özelinde yaşanabilecek olağanüstü değişimler hem de Avrasya’nın kuzey bölgesinde ekonomik, demografik, siyasi değişimler incelenecektir
Effects of LDD and CAPE Administration on Total Antioxidant and Total Oxidant Levels in Experimental Periodontitis Model of Rat Brain
No full textAim: Observing the effects of caffeic acid phenethyl ester (CAPE) and/or low dose doxycycline (LDD) on total antioxidant and oxidant status of brain in experimental periodontitis is the purpose of the study. Methods: 48 male Wistar albino rats were designed as the following: control group (C, n=8), periodontitis + CAPE group (PC, n=10), periodontitis + LDD (PD, n=10), periodontitis + LDD + CAPE group (PCD, n=10), and periodontitis group (P, n=10). The time period for the experiment was 14 days. 10 µmol/kg/day of CAPE was administered using an intraperitoneal injection (IP). 10 mg/kg/day of LDD was administered using an oral gavage method. Histopathological changes were evaluated. Results: Beneficial results were seen in all of the groups after LDD and/or CAPE administration on decreasing the alveolar bone loss level and oxidative stress. All of the experimental groups showed signs of periodontitis with alveolar bone loss. The P group leads with the most alveolar bone loss compared to the other periodontitis groups and the lowest group was the PC group in the periodontitis groups. The evolution of alveolar bone loss from high to low was that group P, group PD, group PCD, group PC, and group C (P 0.05). Conclusion: The combination of LDD and CAPE are not significantly different when applied alone or together on oxidative status. But both of the agents have beneficial effects on reducing the oxidative stress and tissue damages
Diagnosis and Treatment of Acute Pulmonary Embolism: A Single Center Experience
No full textAim: Pulmonary embolism is a potentially life-threatening cardiovascular disease frequently encountered in emergency departments. The computed tomography pulmonary angiography is the imaging modality of choice in the diagnosis of pulmonary embolism. This study aimed to examine the effects of clinical findings and treatment methods on prognosis and mortality by examining patients diagnosed with acute pulmonary embolism in the emergency department. Methods: In this retrospective cohort study, records of patients with acute pulmonary embolism were accessed from the archive. Patients' age, gender, medical complaints, co-morbidities, the treatment method applied to the patients, and the clinical outcomes of the patients were analyzed. The statistical distribution of the patients' demographic and clinical information was calculated. Results: The most common complaint of 206 patients with acute pulmonary embolism was dyspnea. 25.7% patients had massive pulmonary embolism. The blood d-dimer, lactate and troponin T levels of patients with massive pulmonary embolism were found to be higher than patients with sub-massive pulmonary embolism. Thrombolytic therapy was administered to 6.8% of acute pulmonary embolism patients and it was found to be a method that had a statistically positive effect on survival. D-dimer, white blood cell, neutrophil, blood urea nitrogen, lactate and troponin T values were found to be higher in mortal patients. It was determined that 13.1% of the patients died. Conclusion: The sooner the early diagnosis of acute pulmonary embolism, which can be mortal in the emergency department, is made and the treatment is started, the mortality rate will decrease significantly
The role of mother-child relationship between young children's anxiety and social play
No full textThe aim of this study was to explore the moderating role of mother–child relationships (closeness and conflict) in the relations between children’s anxiety and play behaviour in the sample of Turkish preschool children. Participants were N = 211 children (117 boys, M age = 64.08 months, SD = 12.26) attending preschool from suburban areas in Ankara. Mothers rated children’s anxiety and mother–child relationships, whereas teachers provided ratings of children’s social play. Among the results, children’s anxiety and mother’s conflict was positively correlated with reticence behaviour and negatively correlated with social play. Moreover, mother–child closeness significantly moderated these associations. The current findings suggest that mother – child relationships moderated the association between unsociability and social play in children (buffering effect). The interaction between anxiety and mother–child closeness could be beneficial for predicting unsociable children’s social play behaviour. Mothers can improve their relationship depending on unsociable children to provide nurturing social play behaviour. Limitations and future directions of the current study are discussed
Clinical And Radiological Results Of Ludloff Medial Open Reduction Technique In Patients Wıth Developmental Hip Dysplasia
Get PDFAim: The aim of this study was to evaluate the clinical and radiological results of Ludloff medial open reduction surgery in patients with the developmental of hip dysplasia, younger than 18 months old. Methods: The radiological and clinical results of 35 patients (49 hips), younger than 18 months of age treated with Ludloff medial approach due to DDH between the years 2013 and 2020 were retrospectively evaluated. Preoperative, final control acetabular index angles and medial apertures were measured according to the McCay criteria, Tönnis classification, Kalamchi-MacEwen classification, IHDI classification and Severin classification were analysed. Results: At the last control, the youngest age was 27 months, the oldest was 88 months and the mean age was 43.90 ± 14.17 months. The follow-up period was performed at a minimum age of 12 months, a maximum age of 72 months, and the mean follow-up period was 24.81 ± 17.17 months. According to the Tönnis classification, 40 hips were Tönnis classification type 1 (81.63%), 4 hips were Type 2 (8.16%), 3 hips were Type 3 (6.12%) and 2 hips were Type 4 (4.08%) in the follow-up visit. According to McCay clinical evaluation criteria, 38 hips (79.59%) were grade 1 which equates to excellent results. Grade 0 (no necrosis) was detected in 38 (77.55%) of 49 hips according to the Kalamchi and MacEwen AVN clinical evaluation criteria. According to the Severin classification, type 1 results were observed in 32 (65.31%) of 49 hips, type 2 in 9 hips (18.37%), type 3 in 1 hip (2.04%) and type 4 in 7 hips (14.29%). The mean CE angle was found to be 18.56 ± 9.93. Additional surgical intervention was required in 8 hips of 6 patients. Conclusion: Clinically and radiologically satisfactory results were obtained in DDH patients with Ludloff medial open reduction technique, below the age of 18 months
Farklı İçeriklere Sahip Ağız Gargaralarının Gömülü Üçüncü Molar Cerrahileri Sonrası Gözlenen İnflamatuar Komplikasyonlar ve Erken Yara İyileşmesi Üzerine Etkilerinin Karşılaştırılması: Randomize Klinik Çalışma
Get PDFAmaç: Bu prospektif randomize klinik çalışmanın amacı, gömülü mandibular 3. molar dişlerin cerrahi çekimleri sonrası oluşan ağrı, ödem, trismus miktarları ve operasyon sahası iyileşmesi üzerine farklı içeriğe sahip gargara kullanımının etkilerini araştırmaktı. Gereç ve Yöntemler: Yaşları 18 ile 47 arasında değişen, Pederson zorluk indeksine göre orta zorlukta gömülü mandibular 3. molar dişlere sahip, 60 katılımcı çalışmaya dâhil edilmiştir. Katılımcılar randomize halde, her birinde 20 kişinin olduğu 3 gruba ayrılmıştır. Postoperatif olarak 1. gruba benzidamin HCl (%0,15)+klorheksidin glukonat (%0,12), 2. gruba çinko klorit (ZnCl2) (%0.02)+borik asit (H3BO3) (%0,01), 3. gruba propolis (%1)+klorheksidin glukonat (%0,02) içerikli gargaralar reçete edilmiştir. Maksimum ağız açıklığı, ödem, ağrı miktarları ve erken iyileşme indeksi skorları ameliyat öncesi ve sonrası 2 ve 7. günlerde ölçülmüştür. Bulgular: Postoperatif 2 ve 7. günde 1, 2 ve 3. grupların ağrı değerleri arasında (p=0,000 ve p=0,022) ve erken iyileşme skorları arasında (p=0,018, p=0,002) istatistiksel olarak anlamlı farklılıklar gözlenmiştir. Ayrıca postoperatif 2 ve 7. günde 1, 2 ve 3. grupların ağız açıklığı değerleri açısından, istatistiksel olarak 2. günde anlam bulunurken (p=0,020), 7. günde anlamlı bir fark görülmemiştir (p=0,425). Çalışma gruplarının ödem ölçümleri arasında ise takip sürecinde anlamlı farklılık tespit edilmemiştir. Sonuç: Gömülü mandibular 3. molar cerrahileri sonrası ortaya çıkan inflamatuar komplikasyonlar ve yara iyileşmesi açısından etkinliği araştırılan farklı içeriklere sahip ağız gargaralarının postoperatif rutin kullanımlarında olumlu etkiler oluşturabilecekleri gözlenmiştir
Impact of COVID-19 First Official Vaccine Approval on Precious Metals: A Behavioral Finance Approach
Get PDFThis research aims to reveal the effect of first official COVID-19 vaccine approval on precious metal prices in terms of return and volatility. Within the context of precious metal, gold, silver, platinum, and palladium are selected as dependent and US dollar index as independent variables. In order to measure the difference in the returns and volatilities before and after the first official approval of the COVID-19 vaccine, a dummy variable is defined. Analysis studies have been carried out with EGARCH models. According to the results, it is determined that the first official COVID-19 vaccine approval had negatively affected the level of volatility for gold and silver prices. The approval does not affect the volatility of platinum and palladium. Besides, a negative relationship is found between both all precious metals and the US dollar index in terms of returns. It is assumed that the results could be interpreted as investors acted by the risk aversion bias before the first official approval of the COVID-19 vaccine, and the approval created an effect of reducing uncertainty in the financial markets
The effects of 6 weeks functional myofascial line exercise on speed and agility in tennis athletes aged 12 - 14
Get PDFAraştırmanın amacı: Bu çalışmada, tenis sporcularında uygulanan fonksiyonel miyofasyal hat egzersizlerinin sürat ve çevikliğe etkisi amaçlanmıştır. Yöntem: Antalya’da Tenis sporcusu olan 12-14 yaş arası 13 kız, 13 erkek sporcu araştırmaya alındı. Sporcular 13 deney, 13 kontrol grubu olarak 2’ye ayrıldı. Deney grubuna 6 hafta, haftada 2 gün, 4 egzersizden oluşan egzersiz programı uygulandı. Gözlem grubu tenis çalışmalarına devam etti. Elde edilen verilerin istatistiksel analizi için SPSS 25 paket programı kullanılmıştır. Bulgular: Araştırma sonucunda, kız deney grubunun 20 m. sürat ön-test ve sontest arasında büyük bir etki büyüklüğü ile (r=0,63) istatistiksel olarak anlamlı bir farklılık (p=0,02); V-Cut Çeviklik ön-test ve son-test arasında büyük bir etki büyüklüğü ile (r=0,57) istatistiksel olarak anlamlı bir farklılık (p=0,04) bulunmuştur. Ayrıca erkek deney grubunun 20 m. sürat ön-test ve son-test arasında büyük bir etki büyüklüğü ile (r=0,63) istatistiksel olarak anlamlı bir farklılık (p=0,01); V-Cut Çeviklik ön-test ve sontest arasında büyük bir etki büyüklüğü ile (r=0,63) istatistiksel olarak anlamlı bir farklılık (p=0,01) bulunmuştur. Kontrol gurubunda ise hem kız hem erkek grubunda 20 m. sürat ön-test ve son-test ile V-Cut Çeviklik ön-test ve son-test arasında istatistiksel olarak anlamlı bir farklılık bulunmamıştır. Sonuç: 12-14 yaş grubundaki tenis sporcularında 6 hafta uygulanan ön ve arka miyofasyal hat direnç egzersizleri sürat ve çeviklikte sporcuların performansını arttırmaktadır. Sporcuların direnç egzersiz programları tasarlanırken miyofasyal hat dizilişlerinde olan kasları aynı anda aktif eden egzersiz seçerek program oluşturulması önerilmektedir.Aim: In this study, the effect of functional myofascial line exercises applied in tennis athletes on speed and agility was aimed. Method: 13 female and 13 male tennis players aged 12-14, living in Antalya, were included in the study. Athletes were divided into 2 as 13 experimental and 13 control groups. An exercise program consisting of 4 exercises was applied to the experimental group for 6 weeks, 2 days a week. The observation group continued its tennis studies. SPSS 25 package program was used for statistical analysis of the obtained data. Results: As a result of the research, the girl experimental group was 20 m. a statistically significant difference (p=0.02) with a large effect size (r=0.63) between sprint pre-test and post-test; A statistically significant difference (p=0.04) was found with a large effect size (r=0.57) between V-Cut Agility pre-test and post-test. In addition, the male experimental group 20 m. a statistically significant difference (p=0.01) with a large effect size (r=0.63) between sprint pre-test and post-test; A statistically significant difference (p=0.01) was found with a large effect size (r=0.63) between V-Cut Agility pre-test and post-test. In the control group, 20 m. in both girls and boys groups. There was no statistically significant difference between sprint pre-test and post-test and V-Cut Agility pre-test and post-test. Conclusion: Anterior and posterior myofascial line resistance exercises applied for 6 weeks in 12-14 age group tennis players increase the performance of athletes in speed and agility. When arranging resistance exercise programs of athletes, it is recommended to create a program by choosing exercises that activate the muscles in myofascial line arrays at the same time
A novel image Denoising approach using super resolution densely connected convolutional networks
No full textImage distortion effects, called noise, may occur due to various reasons such as image acquisition, transfer, and duplication. Image denoising is a preliminary step for many studies in the field of image processing. The vast majority of techniques in the literature require parameters that the user must determine according to the noise intensity. Due to the user requirement, the developed techniques become almost impossible to use by another computer system. Therefore, the Densely Connected Convolutional Networks structure-based model is proposed to remove noise from gray-level images with different noise levels in this study. With the developed approach, the obligation of the user to enter any parameters has been eliminated. For the training of the proposed method, 2200 noisy images with 11 different levels derived from the BSDS300 Train dataset (original 200 images) were used, and the success of the method was evaluated with 1100 noisy images derived from the BSDS300 Test dataset (original 100 images). The images used to evaluate the success of the proposed method were compared to both the traditional and state-of-the-art techniques. It was observed that the average SSIM / PSNR values obtained with the proposed method for the whole test dataset were 0.9236 / 33.94 at low noise level (sigma(2) = 0.001) and 0.7156 / 26.39 at high noise level (sigma(2) = 0.020). The results show that the proposed method is a very effective and efficient noise filter for image denoising
Yeni Koronavirüs, Covid-19 ve Bağımsız Denetime Etkileri
Get PDF2019 yılı sonuna gelindiğinde dünya Çin’de ortaya çıkan yeni bir tür koronavirüs ve ilerleyen zamanlarda bu virüsün yol açtığı pandemi halini alacak Covid-19 hastalığı ile karşı karşıya kalmıştır. Ülkeler başta sağlık alanında olmak üzere ekonomik, finansal, sosyal açılardan bu salgın ile mücadeleye girişmiştir. Pandeminin olumsuz etkileri kapsamında bağımsız denetimin de asli görevi olan işletmelerin finansal bilgilerine yönelik makul güvence sağlanması konusu önem kazanmış ve irdelenmesi gerekmiştir. Finansal hayattaki önemi sebebiyle bu durumun ciddi bir şekilde ele alınarak çözümler üretilmesi hayati öneme sahiptir. Bu çalışmada bu kapsamda Covid-19’un bağımsız denetime ve finansal raporlara muhtemel etkileri belirlenerek ele alınmış ve çözüm önerileri sunulmuştur