Modern yaşamın getirileri ile beraber değişen beslenme alışkanlıkları ve fiziksel aktivite azlığı, obezitenin dünya genelinde bir halk sağlığı sorunu haline gelmesine neden olmaktadır. Obez bireylerde çeşitli metabolik veya sistemik hastalıklar ortaya çıkmaktadır. Çalışmamızda obeziteye bağlı olarak gelişen karaciğer yağlanması ve fertilite kaybı üzerine selenyum ve N- asetil sistein tedavisinin etkilerini ortaya koymak amaçlanmaktadır. Bu doğrultuda histokimyasal ve immünohistokimyasal tekniklerin yanı sıra serum biyokimya analizleri, oksidatif stres parametreleri ve sperm parametreleri tayinleri yapılmıştır. Selenyum ve N- asetil sisteinin, obezitenin karaciğer ve testis üzerinde oluşturduğu hasarı hem yapısal hem de biyokimyasal düzeyde azalttığını tespit ettik. Ulusal ve uluslararası literatürde ilk kez bu ajanlar kullanılarak obez sıçanlar üzerindeki tedavi edici etkileri gösterilmiştir.
Kapsayıcı eğitim, Türkiye dâhil dünya genelinde yaygınlık kazanan bir eğitim modeli haline gelmiştir. Kapsayıcı eğitim, öğrencilerin farklı ihtiyaçlarını, bireysel özelliklerini, yeterlilik ve eğitim düzeylerini ve kültürel yapılarını dikkate alarak, eğitim sisteminde ayrımcılığı azaltmayı, okul ve toplum süreçlerine katılımı artırmayı ve bu amaç doğrultusunda gerekli içerik, yaklaşım, yapı ve strateji değişikliklerinin yapılmasını öngören bir süreçtir. Öğrencilerin farklı ilgi ve ihtiyaçlarını karşılayan öğretim ortamlarının sağlanması için; öğretim uygulamalarının, öğrenme ortamlarının, kullanılacak içerik, yaklaşım ve stratejilerin nasıl olması gerektiğini açıklayan öğretim programlarının kapsayıcılığının sağlanması büyük önem taşımaktadır. Bu sebeple, bu çalışmanın amacı; 5. Sınıf İngilizce dersi öğretim programını kapsayıcı eğitim ilkeleri etrafında incelemek ve bir yarıyılı kapsaması planlanan, kapsayıcı eğitim değerlerine uygun bir öğretim programı önerisi hazırlamaktır. Çalışmadaki programda yer verilen özellikler, tüm devrelere ve tüm derslere uyarlanabilir niteliktedir.
The purpose of this study was to develop, implement, and evaluate technology enhanced scaffolding design in Task Based Language Teaching (TBLT) for English beginner level students at a middle school with a limited technology infrastructure and low SES profile. The implementation’s effectiveness was assessed by a comparison of pre and posttest data from 38 fifth graders in a control and experimental group, as well as an analysis of the latter’s responses to classroom tasks and feedback questions collected periodically. While both groups progressed, the experimental group significantly outperformed the control in the posttest. Paired samples comparisons showed that the learners in the experimental group improved their test scores significantly in all the subtests, while those in the control showed a significant increase only in vocabulary questions. The additional descriptive analysis of the qualitative data collected from the experimental group provided evidence for how this difference occurred. Based on the findings of the study, an amendment to the guidelines for scaffolding design software is suggested from the perspective of teaching English as a Foreign Language (EFL) in limited contexts.
Development of iron modified chitosan (CSFe) adsorbents Characterization of iron modified chitosan adsorbents Reactive Orange (RO16) dye removal with developed CSFe adsorbents The aim of the study was investigation of Reactive Orange 16 (RO16) textile dye removal with developed iron modified chitosan (CSFe) adsorbent materials. Productions of CSFe adsorbents were carried out with 0.5 mg/L chitosan and 250, 500 and 750 mg/L [Fe +2 ] concentrated 500 mL FeSO4 solutions at 25 ºC for 2 hours at 250 rpm and iron-modified adsorbents were named as CSFe-1, CSFe-2 and CSFe-3. Adsorption studies were conducted by using 0.5 g/L adsorbent to remove of 50 mg/L RO16 dye solution for 2 hours.Figure A. Production of iron modified chitosan adsorbent materials Purpose: Development of iron modified chitosan adsorbent materials and determination of the adsorption effects of these adsorbents with the removal of RO16 textile dye was aimed in this study.Theory and Methods: 0.5 mg/L chitosan was placed in 250, 500 and 750 mg/L [Fe +2 ] concentrated 500 mL FeSO4 solutions were shaken at 25℃ for 2 hours at 250 rpm in order to determine the amount of maximum iron loading capacity on chitosan. Iron-modified adsorbents were used to examine the effect of RO16 dye removal. Using the adsorption equilibrium equation, the amount of Fe +2 adsorbed per unit chitosan was calculated as 79, 112 and 110 mg/g for CSFe-1, CSFe-2 and CSFe-3. The SEM, EDS and FT-IR analysis were applied on the ironmodified adsorbents. In order to determine the optimum adsorption conditions for CSFe-1 adsorbent in the RO16 dye removal process, the amount of adsorbent (0.25, 0.5 and 1 g CSFe-1/L), shaking speed (250 and 350 rpm), dye solution concentration (25, 50 and 100 mg/L) and temperature (25 and 50 ºC) were investigated. Results:The amount of Fe +2 adsorption capacity values of iron-modified adsorbents (CSFe-1, CSFe-2 and CSFe-3) were calculated as 79, 112 and 110mg/g, respectively. The CSFe-1 and CSFe-2 adsorbent materials were selected to examine the effect of RO16 dye removal. In adsorption studies, the dye removal efficiencies were achieved as 25 and 90% for pure and iron modified chitosans. The 0.5 g CSFe-1/L adsorbent amount, 250 rpm shaking speed, 25℃ and 50 mg/L dye solution concentration were determined as optimum adsorption conditions and 92% color removal efficiency was obtained under the conditions. Conclusion:The dye removal efficiencies were achieved as 25 and 90% for pure and iron modified chitosans. Moreover, the maximum adsorption capacity of pure and modified adsorbents for RO16 dye solutions was calculated as 27, 91 and 88 mg/g, respectively. It was observed that RO16 adsorption capacity and decolorization efficiency increased by iron modifying chitosan up to 70% and it can be used in dye removal.
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