İlköğretim Matematik Öğretmeni Adaylarına Yönelik Çok Kültürlü Sınıflarda Öğretim ve Kendi Öğretme Uygulamaları Üzerinde Düşünme Fırsatları Ölçeğinin Geçerlik ve Güvenirlik Çalışması

Bu araştırmanın amacı, uluslararası TEDS-M çalışması için geliştirilmiş Çok Kültürlü Sınıflarda Öğretim ve Kendi Öğretme Uygulamaları Üzerinde Düşünme Fırsatları Ölçeği’nin (Tatto vd., 2008) Türkçe formunun geçerlik ve güvenirliğini incelemektir. Araştırma Türkiye’nin yedi farklı bölgesinden rastgele seçilen birer üniversiteden toplam 583 ilköğretim matematik öğretmeni adayı üzerinde yürütülmüştür. Açımlayıcı faktör analizi sonucunda toplam açıklanan varyansın %72 olduğu ve maddelerin iki faktör altında toplandığı görülmüştür. Doğrulayıcı faktör analizinde iki boyutlu modelin iyi uyum verdiği görülmüştür (x2=192.37, sd=34, RMSEA=0.07, CFI=0.97, GFI=0.93, AGFI=0.88). Türkçe formda bulunan maddeler ile toplam arasındaki korelasyon katsayılarının 0.77 ile 0.91 arasında değiştiği bulunmuştur. Ölçeğin iç tutarlılık güvenirlik katsayıları çok kültürlü sınıflarda öğretim alt boyutu için 0.90 ve kendi öğretme uygulamaları üzerinde düşünme için 0.92 olarak bulunmuştur. Bu sonuçlar ölçeğin Türkçe formunun geçerli ve güvenilir bir ölçme aracı olduğunu göstermektedir

Relationship between plasma osmolality and neutrophil/lymphocyte ratio in heart failure with reduced ejection fraction

Aim: Heart failure (HF), a progressive disease, is accompanied by chronic inflammation and changes in osmolality. The neutrophil-to-lymphocyte ratio (NLR) demonstrates a sys- temic inflammatory response in most diseases; however, the relationship between plasma osmolality and the systemic inflammatory response in HF patients is not yet clear. There- fore, we aimed to investigate the possible associations of NLR with plasma osmolality levels in patients with HF. Materials and Methods: The present study included 189 consecutive patients with chronic HF with an ejection fraction (EF) of <40%. They were classified into four groups based on admission plasma osmolality quartiles: hypo-osmolar (first quartile), normo- hypo-osmolar (second quartile), normo-hyperosmolar (third quartile), and hyperosmolar (fourth quartile). We evaluated the relationship between NLR, plasma osmolality, type-B natriuretic peptide (BNP), and the New York Heart Association (NYHA) functional class. Results: The hyperosmolar group had an increased NLR (p = 0.007). The presence of NYHA class 3–4 functional capacity, high-sensitivity C-reactive protein, and high osmo- lality were independent predictors of increased NLR. In correlation analysis, osmolality was significantly positively correlated with NLR (r = 0.201, p = 0.011). Conclusion: Higher NLR values may be associated with increased plasma osmolality, which may indicate an increased inflammatory status in the HF phenomenon

Land-use effect on distributions of as, cr and cu in soils adjacent to cca-treated utility poles in Artvin and Rize, Turkey

Chromated copper arsenate (CCA)-treated wood has been widely used in Turkey to protect it from decay. In this study, influences of land-use types on distributions of As, Cr and Cu in soils adjacent to CCA-treated utility poles were studied in tea and hazelnut plantations as well as crop fields. Ten poles from each land-use type (a total of 30 poles) were chosen for the study purposes in Arhavi and Fındıklı towns of Artvin and Rize, Turkey, respectively. Soil samples were collected from surface layers of soil (0- 10 cm depth), adjacent to the utility poles and at distances of 0.5 m and 10 m (control). Concentrations as high as 80, 520 and 94 mg kg-1 were observed in soils adjacent to utility poles for As, Cr and Cu, respectively. Soil As, Cr and Cu levels decreased significantly with the distance from the CCA-treated poles. Cr concentrations in soil were sig- nificantly higher in the tea plantations than in the crop fields (P <0.05). Soil pH, sand, clay and organic matter content varied significantly with land-use type. Our results indicate that the use of CCA-treated utility poles in the tea planta- tions poses more environmental contamination risks com- pared to that in hazelnut plantations and crop fields. These risks could be eliminated by using alternative arsenic-free wood preservatives

An investigation of postpartum mothers’ readiness for hospital discharge and the affecting factors

Introduction: Postpartum period which contains important changes in the woman’s and newborn’s life, WHO recommends monitoring the mother and newborn in health care system, encouraging breastfeeding, monitoring the newborn’s development, and supporting and empowering parents about newborn care.Purpose: The purpose of this study is to identify postpartum mothers’ readiness for hospital discharge and the affecting factors. Method and material: The study was conducted with 190 mothers who gave birth between May and July, 2014 in a Maternity and Children Hospital located in Mersin. The data were collected through the Identification Form developed by the researcher in line with the related literature and Readiness for Hospital Discharge Scale-Postpartum Mother Form (RHDS-PMF).Results: Of all the participants, 84.7% were ready for discharge, 69.4% received information from midwives or nurses about their own care, and 68.7% received information about the baby’s care. Mean scores for the participants’ Readiness for Hospital Discharge Scale was found 50.47±12.16 for Personal State, 45.08±12.33 for Knowledge, 21.0±75.68 for Ability, 28.13± 8.91 for Expected Support and 144.76±30.15 for total score. The scores were found to be significantly higher for mothers who reported to be ready for discharge, who stated to have received information about their own care and the baby’s care, who were multiparous, and who would receive support for their care and the baby’s care after hospital discharge (p&lt;0.05).Conclusion: Majority of the participants in this study were found to be ready for hospital discharge and factors affecting readiness for hospital discharge were identifed as informing mothers about their care and the baby’s care after delivery, mothers’ being multiparous, and receiving support about their care and the baby’s care after hospital discarge

Nuclear and organelle genes based phylogeny of dryomys (glirıidae, rodentıa, mammalıa) from Turkey

Molecular phylogeny, phylogeography and genetic structure of the genus Dryomys Thomas, 1906 from Turkey were identified by using partial sequences of beta-fibrinogen intron 7 and mitochondrially encoded 12S ribosomal RNA genes and also combined data of two genes. Within Dryomys nitedula species, both, nuclear and mitochondrial genes coherently separated the Thrace lineage from the other lineages in Anatolia. Contrary to this, complex and incomprehensible phylogenies were recovered for Anatolian populations of this species. The analysis of the combined data of these two genes resolved mentioned complexity and incongruity and made phylogeny compatible with the results of past studies for the relative position of the Anatolian lineages. Thus, the presence of four different lineages (one in Thrace and three in Anatolia) within D. nitedula in the localities exemplified across Turkey was confirmed. Genetic differentiation (K2P distances) between the lineages were moderate at the level of intraspecific diversity. In addition to this, genetic distance (K2P = 5.5%) determined between D. nitedula and D. laniger conformed the distance suggested for the separate species of mammals. Evolutionary divergence time estimations demonstrated that the probable divergence between D. laniger and D. nitedula and among its detected lineages started in the border of Late Miocene and Pliocene (5.3 Mya) and lasted to the beginning of the Calabrian Stage of Pleistocene (1.8 Mya) in line with the previous results obtained from fossil and molecular data

Usefulness of the uric acid and CHA2DS2-VASc score in prediction of left atrial thrombosis in patients with mitral stenosis and sinus rhythm

Background: The risk of thrombus formation in the left atrium is known to be very high in patients with both mitral stenosis (MS) and atrial fibrillation (AF). However, that risk should not be ignored in patients with MS in sinus rhythm (SR). The aim of this study was to determine the clinical, echocardiographic, and biochemical factors that could have a determining role in the formation of a left atrial (LA) thrombus in patients with MS in SR. Method: A total of 207 consecutive patients with MS who underwent both transthoracic echocardiography (TTE) and transesophageal echocardiography (TEE) for diagnosis or to investigate the presence of a thrombus in the LA and appendage were enrolled in this study. Results: LA thrombus was detected in 21 of 207 patients. CHA2DS2-VASc score was not found to be a predictor of LA thrombosis in patients with MS in SR, despite the higher CHA2DS2-VASc scores observed in those patients. The mitral valve area and mitral valve gradient were not predictive of LA thrombus development; however, LA anteroposterior diameter (LAAPD) was found to be a predictor of LA thrombosis. Levels of high sensitivity-C-reactive protein and uric acid were higher in the patients with LA thrombosis, but only uric acid was found to be a predictor of LA thrombosis in multivariate analysis. Conclusions: A larger LAAPD and an elevated serum uric acid level were found to be independent predictors of LA thrombosis in patients with MS in SR.

Synthesis and characterization of Fe3O4@Cs@Ag nanocomposite and its use in the production of magnetic and antibacterial nanofibrous membranes

Electrospinning is a promising technique to produce polymeric as well as metal oxide nanofibers in diverse domains. In this work, different weight ratios (5%, 7.5% and 10%) of Fe3O4@Cs@Ag magnetic nanoparticles were added in PVP (polyvinylpyrrolidone) polymer and fabricated via electrospinning method to produce magnetic nanofibers (MNFs). Structural, magnetic, morphological, spectroscopic and thermal properties of produced nanofibers were characterized. Furtheremore, antibacterial effects of Fe3O4@Cs@Ag nanofibrous membrane was investigated. Obtained SEM images showed that produced nanofibers were uniform and defect free. Moreover, crystallinity and magnetic moment of fibers was tested by using X-ray diffraction and a vibrating sample magnetometer. The results showed that produced nanofibrous membranes exhibited good antibacterial activity versus Staphylococcus aureus, Bacillus subtilis, Enterococcus faecalis, Escherichia coli, Proteus mirabilis and Pseudomonas aeruginosa. © 2020National Science Foundation, NSF; Directorate for Mathematical and Physical Sciences, MPS: 1726617This work was supported in part by Scientific Research Unit of Nam?k Kemal University within NKUBAP.06.GA.19.195 coded project. Magnetic Characterization at Virginia Commonwealth University was partially supported by National Science Foundation, Award Number: 1726617.This work was supported in part by Scientific Research Unit of Namık Kemal University within NKUBAP.06.GA.19.195 coded project. Magnetic Characterization at Virginia Commonwealth University was partially supported by National Science Foundation , Award Number: 1726617

Safety and efficacy of flow diverter stents in the treatment of middle cerebral artery aneurysms: a single-center experience and follow-up data

PURPOSEThis study aims to evaluate the safety and efficacy of flow diverters (FDs) in the treatment of middle cerebral artery (MCA) aneurysms and share the follow-up (F/U) results.METHODSThe treatment and F/U results of 76 MCA aneurysms treated with the flow re-direction endoluminal device (FRED), FRED Jr., and pipeline embolization device (PED) FD stents were evaluated retrospectively. The aneurysm occlusion rates were compared between FDs, and the integrated and jailed branches were evaluated through follow-ups. The oversizing of the stent was compared between occluded/non-occluded aneurysms and integrated branches.RESULTSThe mean F/U duration was 32 ± 6.3 months, and the mean aneurysm diameter was 4.45 mm. A total of 61 (80.3%) aneurysms were wide-necked; 73 (96.1%) were saccular; 52 (68.4%) were located at the M1 segment; and 36 (45.6%) FREDs, 23 (29.1%) FRED Jr.s, and 19 (24.1%) PEDs were used for treatment. The overall occlusion rates for the 6-, 12-, 24-, 36-, and 60-month digital subtraction angiographies were 43.8%, 63.5%, 73.3%, 85.7%, and 87.5% respectively. The last F/U occlusion rates were 67.6% for FRED, 66.7% for PED, and 60.6% for FRED Jr. (P = 0.863). An integrated branch was covered with an FD during the treatment of 63 (82.8%) aneurysms. A total of six (10%) of the integrated branches were occluded without any symptoms at the last F/U appointment. The median oversizing was 0.45 (0–1.30) for occluded aneurysms, and 0.50 (0–1.40) for non-occluded aneurysms (P = 0.323). The median oversizing was 0.70 (0.45–1.10) in occluded integrated branches and 0.50 (0–1.40) in non-occluded branches (P = 0.131). In-stent stenosis was seen in 22 (30.1%) of the stents at the 6-month F/U and in only 2 (4.7%) at the 24-month F/U. Thus, none of the patients had any neurological deficits because of the in-stent stenosis. Severe in-stent stenosis was seen in two stents.CONCLUSIONMCA aneurysms tend to be complex, with integrated branches and potentially wide necks. FD stents are safe and effective in the treatment of MCA aneurysms, and the patency of the side and jailed branches is preserved in most cases. Higher occlusion and lower in-stent stenosis rates are seen with longer F/U durations

İlköğretim Matematik Öğretmeni Adaylarının Matematik Hakkındaki İnançlarının Ulusal Düzeyde Karşılaştırılması

The aim of present study is to reveal pre-service elementary mathematics teachers’ (PEMTs) beliefs about mathematics in national perspective and to compare the regional differences. The sample of study was composed of 1418 PEMTs enrolled in 21 different universities as 4th year students in Turkey. 12 regions determined in Nomenclature of Territorial Units or Statistics (NUTS) Level 1 were considered during the selection of sample universities. As data collection tools, “beliefs about the nature of mathematics”, “beliefs about mathematics learning” and “beliefs about the achievement in mathematics” scales which were developed in TEDS-M study and contain a total of five factors were used. The collected data were analyzed to descriptive statistics, one-way ANOVA test using SPSS packet software. The findings indicated that PEMTs commonly have dynamic views toward nature of mathematics in the context of universities and regions. However, the static view representing the traditional aspect of mathematics also had a reasonably high percentile. Significant differences among universities and regions were determined in terms of beliefs about nature of mathematics, learning mathematics and mathematics achievement. To identify the possible reasons of the differences, it is suggested to carry out in-depth qualitative investigations to examine the variables such as courses and their contents, classroom applications in education faculties on the basis of universities and regions.Bu çalışmanın amacı, ilköğretim matematik öğretmeni (İMÖ) adaylarının matematik hakkındaki inançlarını ulusal açıdan ortaya koymak ve bölgesel düzeyde karşılaştırmaktır. Araştırmanın örneklemini Türkiye’de 21 üniversitede dördüncü sınıfta öğrenim gören toplam 1418 İMÖ adayı oluşturmaktadır. Örneklemdeki üniversitelerin seçiminde Türkiye İstatistiki Bölge Birimleri Düzey 1 sınıflamasındaki 12 bölge dikkate alınmıştır. Bu çalışmada veri toplama aracı olarak TEDS-M çalışmasında kullanılan, Türkçe’ye uyarlaması yapılan toplamda beş boyuta sahip “matematiğin doğasına ilişkin inanç” “matematik öğrenmeye ilişkin inanç” ve “matematik başarısı hakkında inanç” ölçekleri kullanılmıştır. Verilerin analizinde SPSS paket programı yardımıyla gerçekleştirilen betimsel istatistik değerleri, tek yönlü ANOVA testi kullanılmıştır. Bu araştırmada İMÖ adaylarının matematiğin doğasına yönelik dinamik görüşü üniversite ve bölgeler bazında yaygın olarak benimsedikleri, bununla birlikte matematiğin doğasına ilişkin geleneksel bakış açısını yansıtan statik görüşün de azımsanamayacak düzeyde benimsendiği belirlenmiştir. İMÖ adaylarının matematiğin doğası, matematik öğrenme ve matematik başarısına ilişkin inançlarının üniversiteler ve bulundukları bölgeler bakımından anlamlı farklılık gösterdiği saptanmıştır. Bu anlamlı farklılığı oluşturan faktörlerin tespit edilmesi amacıyla üniversiteler ve bölgeler bazında eğitim fakültelerinde verilen dersler, içerikleri ve sınıf içi uygulamalar gibi değişkenler nitel yaklaşımlarla derinlemesine incelenmesi önerilmektedir

Clinical characteristics and growth hormone treatment in patients with prader-willi syndrome

Objective: To investigate clinical characteristics and response to growth hormone (GH) treatment in patients with Prader-Willi syndrome (PWS) in Turkey. Methods: The data of 52 PWS patients from ten centers was retrospectively analyzed. A nation-wide, web-based data system was used for data collection. Demographic, clinical, genetic, and laboratory data and follow-up information of the patients were evaluated. Results: The median age of patients at presentation was 1.5 years, and 50% were females. Genetic analysis showed microdeletion in 69.2%, uniparental disomy in 11.5%, imprinting defect in 1.9% and methylation abnormality in 17.3%. Hypotonia (55.7%), feeding difficulties (36.5%) and obesity (30.7%) were the most common complaints. Cryptorchidism and micropenis were present in 69.2% and 15.3% of males, respectively. At presentation, 25% had short stature, 44.2% were obese, 9.6% were overweight and 17.3% were underweight. Median age of obese patients was significantly higher than underweight patients. Central hypothyroidism and adrenal insufficiency were present in 30.7% and 4.7%, respectively. Hypogonadism was present in 75% at normal age of puberty. GH treatment was started in 40% at a mean age of 4.7±2.7 years. After two years of GH treatment, a significant increase in height SDS was observed. However, body mass index (BMI) standard deviation (SDS) remained unchanged. Conclusion: The most frequent complaints were hypotonia and feeding difficulty at first presentation. Obesity was the initial finding in 44.2%. GH treatment was started in less than half of the patients. While GH treatment significantly increased height SDS, BMI SDS remained unchanged, possibly due to the relatively older age at GH start. Keywords: Prader-Willi syndrome, endocrine dysfunction, growth hormone treatment, body compositio