YEŞİLIRMAK DELTASI’NDA KIYI EROZYONUNUN DOĞRUSAL REGRESYON ORANI YÖNTEMİYLE ANALİZİ

Bu çalışmada ulusal öneme haiz sulak alanlar kapsamında tescillenen Yeşilırmak Deltası’nın yaklaşık 18,5 km’lik kıyı bölümünde gerçekleşen erozyon uzaktan algılama ve Coğrafi Bilgi Sistemleri (CBS) yardımıyla araştırılmıştır. 1985–2022 periyodunda gerçekleşen kıyı çizgisi değişimlerinin belirlenmesi ve erozyonun derecesinin anlaşılabilmesi için 1985, 1990, 1996, 2001, 2006, 2011, 2017 ve 2022 yıllarına ait Landsat-5 TM/Landsat-8 OLI uydu görüntüleri kullanılmıştır. Uydu görüntülerinden kıyı çizgilerinin belirlenmesinde normalize fark su indeksi (NDWI) ve modifiye normalize fark su indeksi (MNDWI) entegre edilmiştir. Yıllık kıyı çizgisi değişim oranları 1985–2022 periyodunda sekiz farklı yıla ait kıyı çizgilerinden doğrusal regresyon oranı (LRR) yöntemiyle %95 güven düzeyinde hesaplanmış, Yeşilırmak Nehri’nin batı kesimindeki Bölge-1’de maksimum -25,8 m/yıl, doğu kesimindeki Bölge-2’de maksimum - 7,7 m/yıl’a ulaşan erozyon oranı belirlenmiştir. Kıyı çizgisi değişimleri sınıflandırıldığında deltanın %34’ü yüksek, %9’u orta, %18’i düşük derecede olmak üzere %61’inde erozyon gerçekleştiği anlaşılmıştır. 1985– 2022 periyodunda erozyonla kaybedilen alanlar çakıştırma analizi ile belirlenmiş, Bölge-1’de 179,23 ha ve Bölge-2’de 82,22 ha olmak üzere toplam 261,45 ha alanın erozyon ile kaybedildiği görülmüştür. Analiz sonuçları, Yeşilırmak Deltası kıyılarındaki erozyon, birikim ve stabil alanların belirlenerek kıyı dinamiklerinin ve erozyon tehlikesinin daha iyi anlaşılmasına katkı sağlamış ve kıyı çizgisi değişimlerinin belirlenmesinde Landsat görüntüleri ve LRR yönteminin etkinliğini ortaya çıkarmıştı

Projected changes in extreme temperature and precipitation indices over CORDEX-MENA domain

In this study, projected changes in climate extreme indices defined by the Expert Team on Climate Change Detection and Indices were investigated over Middle East and North Africa. Changes in the daily maximum and minimum temperature-and precipitation-based extreme indices were analyzed for the end of the 21st century compared to the reference period 1971–2000 using regional climate model simulations. Regional climate model, RegCM4.4 was used to downscale two different global climate model outputs to 50 km resolution under RCP4.5 and RCP8.5 scenarios. Results generally indicate an intensification of temperature-and precipitation-based extreme indices with increasing radiative forcing. In particular, an increase in annual minimum of daily minimum temperatures is more pronounced over the northern part of Mediterranean Basin and tropics. High increase in warm nights and warm spell duration all over the region with a pronounced increase in tropics are projected for the period of 2071–2100 together with decrease or no change in cold extremes. According to the results, a decrease in total wet-day precipitation and increase in dry spells are expected for the end of the century.Publisher's Versio

Experimentally induced puromycine aminonucleoside nephrosis (PAN) in rats: evaluation of angiogenic protein platelet-derived endothelial cell growth factor (PD-ECGF) expression in glomeruli

<p>Abstract</p> <p>Background</p> <p>In experimentally induced puromycine aminonucleoside nephrosis (PAN) animal models, nephrotic syndrome with minimal change disease and focal and segmental sclerosis-like nephritis similar to that in human is demonstrated; however, the real mechanism of PAN is not yet elucidated. Platelet derived endothelial cell growth factor (PD-ECGF), an endothelial mitogen protein, is believed to take part in microvessel formation and in stimulation of angiogenesis and its expression has not been totally demonstrated in PAN rats yet. In this study, we aimed to examine PD-ECGF expression in acute and chronic PAN induced in rats and find out the association between its expression and the stages of angiogenesis in kidney.</p> <p>Methods</p> <p>For the experiment, twenty-four Male Wistar Albino rats were used and divided into four groups; control group (n = 6), pre-proteinuria group (n = 6), acute group (n = 6) and chronic group (n = 6). We compared statistically all data by One-way ANOVA Test followed by Dunn Multiple Comparison Test.</p> <p>Results</p> <p>Proteinurea levels in control and pre-proteinuria groups were not statistically different; however, it was remarkably higher in the acute nephrosis group and significantly greater in the chronic nephrosis group than control group (<it>p </it>< 0.0025). In pre-proteinuria group, the serum albumin and creatinine clearances also did not significantly differ from the control group. On the other hand, in the acute and chronic nephrosis groups, serum albumin and creatinine clearances progressively decreased (<it>p </it>< 0.05). In our immunohistochemical studies, we showed elevated PD-ECGF expression in glomeruli of acute and chronic PAN rats. Microscopic and ultrastructural appearances of the glomeruli of acute and chronic PAN showed various sequential steps of angiogenesis, macrophages and immature capillaries with primitive lumens and apoptotic endothelial cells in the increased mesangial matrix.</p> <p>Conclusions</p> <p>It is reported that acute and chronic PAN progressively increase PD-ECGF expression and following induction of angiogenesis in the affected glomeruli.</p

Türkiye’de Doping, sporcuların doping bilgi düzeylerinin ölçülmesi (Hentbol Örneği)

The purpose of this study is to discuss doping in Turkey and to assess the knowledge level of handball players in Turkey. Sample in this study is composed of 148 players who have been selected randomly among 336 players from 24 teams (12 men - 12 women) that were competing in the season 2007-2008.A questionaire prepared by expert opinion is employed as the data collection method. First the questionaire is applied to a group of 40 handball players, then the questions are revised according to the answers given by this specific group of players and validity-reliability tests are conducted. Reliability test is performed by using Cronbach Alpha internal consistency technique and the coefficient is obtained as 0.82. In this study, literature survey has been conducted to examine the historical progress of doping which has been verified with numerical data. According to the results of percentage (%) and frequency (f), t-test and ANOVA, 50.7% (N=75) of the contributors is &ldquo;male&rdquo; whereas the remaining 49.3% (N=73) of the contributors is &ldquo;female&rdquo;.As a conclusion of this study, it can be stated that the knowledge level of handball players about doping is limited and the knowledge level of men seems to be higher than the knowledge level of women. It is also revealed that some players have been using doping.Bu &ccedil;alışmanın amacı, T&uuml;rkiye&rsquo;de doping ve hentbolcuların doping bilgi d&uuml;zeylerini belirlemektir. &Ccedil;alışmanın &ouml;rneklemi T&uuml;rkiye Hentbol Federasyonunun S&uuml;per Lig Hentbolcuları, 2007&ndash;2008 d&ouml;neminde m&uuml;cadele eden 24 adet takımdan (12 Bay- 12 Bayan) 336 sporcu arasından tesad&uuml;f&icirc; y&ouml;ntemle se&ccedil;ilmiş 148 sporcudan oluşturmuştur. Veri toplama aracı olarak uzman g&ouml;r&uuml;ş&uuml; alınarak hazırlanan anket kullanılmıştır. Anket 40 kişilik bir hentbol sporcu grubuna uygulanmış, doldurulan anketlere g&ouml;re sorulardaki eksiklikler giderilerek yeniden d&uuml;zenlenmiş ve anketin ge&ccedil;erlik-g&uuml;venirlik &ccedil;alışması yapılmıştır. Cronbach Alpha (a) i&ccedil; tutarlılık y&ouml;ntemi ile g&uuml;venilirlik &ccedil;alışması yapılmış ve 0.82 değeri bulunmuştur. &Ccedil;alışma i&ccedil;in ilgili literat&uuml;r taranarak, tarihi s&uuml;re&ccedil; i&ccedil;erisinde dopingin gelişimi incelenmiş ve sayısal verilerle desteklenmiştir. SPSS 10.0 paket programı kullanılarak yapılan y&uuml;zde (%), frekans (f), t-testi ve Anova sonu&ccedil;larına g&ouml;re katılımcıların %50.7&rsquo;sinin &ldquo;erkek&rdquo; (N=75), %49.3&rsquo;&uuml;n&uuml;n &ldquo;bayan&rdquo; (N=73) olduğu tespit edilmiştir.Bu araştırmanın sonucu, hentbolcuların doping hakkında bilgi d&uuml;zeylerinin az olduğu ve doping konusunda bilgi d&uuml;zeylerinin erkeklerin bayanlardan fazla olduğu tespit edilmiştir. Buna g&ouml;re erkeklerin doping konusunda bayanlara oranla daha fazla bilgiye sahip oldukları g&ouml;r&uuml;lmektedir. Bazı sporcularında doping kullandıkları tespit edilmiştir

The effect of COVID-19 pandemic on acute appendicitis and negative laparotomy

Background/Aims: Emergency service referrals frequently depend on non-urgent problems which are easy to solve without emergency services. Emergency services should be used effectively to raise service quality, patient and personnel satisfaction. Approximately %30 of emergency service referrals are pediatric patients. Covid-19 pandemia affecting the whole world, caused a decrease in non-covid patient emergency service referral numbers, consequently medically non-emergent patient numbers decreased too. Although the number of patients with a prediagnosis of acute appendicitis did not decrease during the pandemic, negative laparotomy rates decreased due to the effective use of emergency services. Material and Method: In this study we compared patients with prediagnosis of acute appendicitis and undergone appendectomy in our pediatric emergency service between 1 March-1 September 2019 and 1 March-1 September 2020. Patient records were evaluated retrospectively. Histopathological diagnoses were accepted as the gold standard. Result: Decreasing referrals of medically non-emergent patients to emergency services during pandemic led to improvement in service quality, so negative laparotomy rates declined. Looking at the literature, negative laparatomy rates of pediatric patients with the pre-diagnosis of acute appendicitis are 8-30%. In the 6-month period in 2019 negative laparotomy rate of our clinic found as 11.2%. When we examine the 6-month data of 2020 during pandemic we noticed that this rate declined to 2.8%. There was also a statistically significant difference between 2019 and 2020 in terms of the length of stay in the hospital. Conclusions: Because of the decrease in referral numbers of medically non-emergent patients to emergency services during pandemic, much more qualified and scientific service was provided. Community education considering emergency service referral indications could reduce workload density and enhance service quality of emergency services

A novel approach for cardiotocography paper digitization and classification for abnormality detection

Cardiotocography (CTG) is a clinical procedure that is used to track and gauge the severity of fetal distress. Although CTG is the most often used equipment to monitor and assess the health of the fetus, the high rate of false positive results due to visual interpretation significantly contributes to needless surgical delivery or delayed intervention. In this study, a novel approach is introduced where both printing CTG paper is digitized and a machine learning approach is employed to detect the abnormality in the digitized CTG signal. Image processing-based preprocessing steps are employed to make the printing of CTG paper more convenient to extract the CTG signal. Various signal-processing techniques are used to calibrate the extracted CTG signal. Then, Empirical Mode Decomposition (EMD) is used to decompose the CTG signal into its frequency components and instantaneous frequency and spectral entropy features are extracted. After feature normalization and feature selection with ReliefF algorithm, support vector machines (SVM) is used for the classification of the normal and abnormal classes. A novel dataset is used in the experimental works and various performance evaluation metrics are used for the evaluation of the achievement of the proposed method. 10-fold cross-validation-based experiments show that the proposed method is quite efficient in abnormality detection in printing CTG papers where an average accuracy score of around 90.0% is produced

Our clinical experience in pelvic magnetic resonance imaging with vaginal contrast

Objectives: Magnetic resonance imaging (MRI) is an important modality for pelvic imaging. Vaginal distension is provided by the use of vaginal contrast in pelvic MRI, and it plays an important role in staging especially cervical and vaginal cancer. The aim of this study is to show whether the use of vaginal contrast material contributes to the diagnosis in pelvic examination. Material and methods: Between October 1, 2016 and December 30, 2020, a total of 57 patients who underwent pelvic magnetic resonance imaging with vaginal contrast in the radiology clinic were included in the study and evaluated retrospectively. Results: Cervical cancer was detected in 38 of the 57 patients included in the study, and when the vaginal pre- and post-contrast staging of the patients was performed, the pre-contrast stage was found to be high in six patients (15%). Eight of 38 patients diagnosed with cervical cancer underwent surgery. When the pathological and radiological staging of the patients who underwent surgery were compared, they were 100% compatible. Conclusions: The use of vaginal contrast material increases the diagnostic value of MRI in various pelvic pathologies, especially in cervical cancer staging

Validity and Reliability of Turkish version of the Schizophrenia Hope Scale

This study aimed to evaluate the validity and reliability of the Turkish version of the Schizophrenia Hope Scale (SHS). This methodological study was carried out with 214 participants diagnosed with schizophrenia who were followed up in the psychiatry outpatient clinics of a university hospital between August 2021 and August 2022. Data were collected using an Information Form and the Schizophrenia Hope Scale (SHS). Language and content validity, exploratory and confirmatory factor analyses, item-total correlation, Cronbach alpha coefficient, and test-retest reliability methods were used in the validity and reliability analysis of the scale. As a result of the exploratory factor analysis, no item was excluded from the scale and it was determined that the scale has nine items and a single-factor structure. The single-factor structure of the scale was confirmed with the confirmatory factor analysis. The Cronbach Alpha coefficient of the scale was 0.901 and the factor loads ranged between 0.70 and 1.0. The test-retest correlation coefficient was r=0.959. The Turkish version of the scale was found to be valid and reliable. SCH is important since it represents the subjective meaning of hope from schizophrenic patients’ perspective and allows an easier measurement of the level of hope in this population. Mental health professionals can use SHS to determine or increase the level of hope of schizophrenia patients in their studies

Çocuğun gelişiminde bağlanma, ilgi-bakım ve aile dinamiklerinin etkisi

TÜBİTAK SBB01.02.200

New Diagnosis and Treatment Approaches to Post-Traumatic Stress Disorder

Post-traumatic stress disorder (PTSD) is a mental health condition and disorder causing psychological deterioration triggered by terrifying events or traumatic experiences either by experiencing or by witnessing it. Though many people have common feelings, PTSD symptoms vary from one person to another. So it is strongly recommended to focus on new diagnostic and therapeutic methods relying and structured on a neurobiological dimension by collecting and processing neuroimaging data. It is crucial to make a profound analysis of PTSD in terms of its ontological, biological, developmental, psychological, and sociological aspects. Both with the new treatment opportunities and involvement of in silico-based artificial intelligence applications, new psychotherapy techniques and new discourses in digital media will be possible. Within the scope of the study, ontological discussions are followed and juxtaposed by Neuro-Biological Perspectives on Genomics and Epigenomics as well as the clinical and neuro-imaginative perspectives and clinical overviews of PTSD. Besides, the neuro-developmental views in the context of children along with adverse childhood experiences (ACE) and their relation to PTSD are analyzed by emphasizing the significance of brain development. Sociological aspects of PTSD in the digital habitus are collocated to develop unique therapy approaches that embrace sociological perspectives of Information Society