Evaluating Chemistry Teachers Within the Context of Teacher Characteristics

There are several characteristics arising from the role that education and training activities impose on teachers. That teachers have different characteristics stems from the fact that the teaching role has a multi-dimensional behavior pattern. Therefore, teacher characteristics are being researched in various fields of science and various subjects. One of these domains is about the characteristics of chemistry teachers. Teacher characteristics are decisive for both effective education and educational improvement. Therefore, it is important to analyze the characteristics of chemistry teachers within a systematic approach. The aim of this study is to try to propose a multi-criteria model for the analysis of characteristics of chemistry teachers and their evaluation in the context of teacher characteristics. With the multi-criteria decision-making model proposed in the study, a 9th grade chemistry teacher was evaluated in detail and holistically. The proposed model allowed the evaluation of teacher characteristics on the basis of cognitive, affective and psychomotor dimensions. In this study, the level of the roles of each of teacher characteristics in evaluating the effectiveness of chemistry education was also determined. Furthermore, the competence level of the chemistry teacher in this study was determined based on each characteristic

Lomber disk hernisi nedeniyle düşük ayak gelişen hastalarda semptomların başlangıcından ameliyata kadar geçen sürenin prognoza etkisi]

Aim: The aim of this study was to evaluate the effect of the duration from foot drop development to nerve decompression on the rate and degree of recovery in foot drop clinic. Material and Methods: We retrospectively reviewed 30 consecutive patients who had undergone microdiscectomy for foot drop clinic (ankle dorsiflexion 0/5 paresis) between April 2014 and February 2019. Patients were divided into three groups according to the time from foot drop development to surgery, as 1 week. Kruskal-Wallis and Bonferroni corrected Mann Whitney U test were used to evaluate the rate and degree of recovery of ankle dorsiflexion muscle strength between groups. Results: In this study, 30 patients (18 females and 12 males) who underwent surgery for foot drop were evaluated. Mean age at the time of surgery was 46.5±13.5 (range, 18-72) years. Postoperative ankle dorsiflexion strength was 4.2±1.6 (range, 0-5) in 1 week group. Postoperative muscle strength improvement level of 1 week group (p=0.002). There was no statistically significant difference between 72 hours-1 week group and >1 week group (p=0.427). Conclusion: In foot drop clinic, the duration from onset of symptoms to surgical decompression was a statistically significant predictor of postoperative recovery rates. © 2019, Duzce University Medical School. All rights reserved.Medical Research Council, MRC: Table1A total of consecutive thirty patients, who had undergone microdiscectomy due to foot drop clinic (ADF 0/5 paresis) by the same surgical team in two different state hospitals between April 2014 and February 2019, were retrospectively reviewed. Clinical records, radiological imaging reports and surgical reports were reviewed. Data on patient demographics and clinical features, the time elapsed between the development of foot drop and surgery, duration of surgery, and muscle strength of ADF in the early post-operative period were reached. The evaluation of muscle strength of the ADF was carried out by the assessment of the tibialis anterior muscle in accordance with the muscle strength scale of Medical Research Council (Table1). Comorbidities, including diabetes mellitus (DM), smokers, coronary artery disease, chronic obstructive pulmonary disease (COPD) and hypertension were ascertained from the medical records. All procedures carried out in studies including human participants were conducted in compliance with the ethical standards of institutional and/or national research committee, the Helsinki Declaration and its amendments or comparable ethical standards. Ethical approval for the study was obtained from the institutional review board of Namık Kemal University (01.08.2019, 2019/21). Informed and written consent was obtained from all patients. The patients were divided into three groups as regards the time elapsed from the development of foot drop to surgery, as 1 week. Statistical Analysis Normality assumption for continuous data were examined by Shapiro-Wilk test. The differences between the groups were analyzed by Kruskal-Wallis test followed by Mann Whitney U test with Bonferroni correction, since variables not showing normal distribution. Descriptive statistics given as mean±standard deviation and median (minimum-maximum). Categorical data were analyzed with Fisher-Freeman-Halton test and summarized as frequency and percentage. All statistical analyses were performed using MedCalc v.12.7.7 (MedCalc Software, Ostend, Belgium), and p<0.05 was considered statistically significant

Our surgical results with anterior cervical corpectomy and iliac graft fusion

Aim: Our aim in this study is to show that an autologous graft taken for fusion after cervical corpectomy is an extremely reliable, inexpensive, and physiological method for creating a fusion. Material and Methods: Thirty patients who were operated on in our clinic between 2015 and 2019 were evaluated retrospectively. Results: In our study, 13 of 30 patients were male and 17 were female. The mean age was 54.8 years. A one-level corpectomy was performed in 23 patients and a two-level corpectomy in seven patients. An iliac graft was placed in the distance, and a plate was placed on one lower and one upper level of the corpectomy vertebrae. Thirty patients who underwent iliac grafts were followed for 2 years. Dysphagia developed in three patients, wound infection developed in three patients, and subcutaneous hematoma developed in two patients. The mean preop lordosis angle of the patients was 9.5, and the mean in the 2nd postoperative year was 14. The preoperative JOA score of the patients was 9, and in the 2nd postoperative year, it was 13.9. Preoperative visual analogue scale (VAS) of the patients was 5.9, in the 2nd postoperative year, it was 1.6. Discussion: An autologous graft is physiological and inexpensive, and infection, foreign body reaction, and poor fusion are less common. When fusion does not occur, catastrophic complications such as stenosis or injuries to the esophagus, trachea, or great vessels may occur. An autogenous graft is the gold standard for fusion

Spontaneous Subdural Haematoma Developing Secondary to Arachnoid Cyst Rupture

Arachnoid cysts are congenital, benign, non-neoplastic, extra-axial intra-arachnoidal lesions. Arachnoid cysts rarely become symptomatic, with bleeding. Intracranial haemorrhage as a complication of arachnoid cyst is a very rare condition. It is well-known that mid-cranial fossa cysts might cause intracerebral haemorrhage or subdural haematoma secondary to traumas. However, the occurrence of spontaneous subdural haematoma secondary to arachnoid cysts, developing without any trauma, is even rarer. A 17-year-old boy presenting with diplopia and headache, with no history of trauma, was diagnosed with left temporal lobe arachnoid cyst and left fronto-parietal subdural haematoma. He was operated on, solely for his haematoma, with no intervention performed for the arachnoid cyst. Authors suggest that it is sufficient to perform an operation for the haematoma only - without arachnoid cyst resection-if there is no clinical presentation specific to the arachnoid cyst itself

Karşılaştırmalı Performans Göstergeleri Kullanılarak Hayrabolu Sulama Şebekesinin Değerlendirilmesi

Performance of Hayrabolu Irrigation Scheme of the Thrace district in Turkey was evaluated using some selected comparative indicators, classified into five groups, namely, agricultural, economic, water-use, physical and environmental performance by International Water Management Institute (IWMI). Agricultural performance, evaluated in different type of Gross Value of Production, was determined lower than that of the other respective national average. Analyses of water-use performance showed that relative water and relative irrigation supply were calculated 1.91 and 1.55 respectively, indicating that water distribution is not tightly related to crop water demand. Economic performance indicators showed that the scheme had a serious problem about the collection of water fees. Physical performance, evaluated in terms of irrigation ratio and sustainability of irrigated land, were poor. Under environmental performance studies, no damages such as waterlogging and salinity were detected in the irrigated area through excessive water use.Uluslararası Su Yönetimi Enstitüsü (IWMI) tarafından geliştirilen bazı karşılaştırmalı göstergeler yardımı ile Hayrabolu Sulama Şebekesine ait tarımsal, ekonomik, su kullanımı, fiziksel ve çevresel performans değerlendirmesi yapılmıştır. Farklı tipte toplam üretim değerlerine bağlı olarak belirlenen Tarımsal performans değeri ülke ortalamasının altında saptanmıştır. Su kullanım performansı göstergelerinden nispi su sağlama ve nispi sulama suyu sağlama değerleri sırasıyla, 1.91 ve 1.55 olarak hesaplanmıştır ki bu su dağıtımı ile bitki su ihtiyacı arasında sıkı bir ilişki olmadığını göstermiştir. Ekonomik performans göstergeleri, şebekenin su toplama konusunda ciddi bir probleme sahip olduğunu göstermiştir. Sulama oranı ve sürdürülebilir sulama alanı olarak değerlendirilen fiziksel performans değeri, zayıf olarak belirlenmiştir. Çevre performans çalışmaları altında tuzluluk ve göllenme gibi zararların oluşmadığı saptanmıştır

A Model Proposal for the Evaluation of Chemistry Education in the Context of Learning Environment

The aim of this study was conducted to evaluate chemistry education in the context of the elements that form the learning environment. The weights of learning environment components were determined by Analytic Hierarchy Process. The significance levels of learning environment dimensions were also calculated. According to the findings of the study, the order of the relative weights of personal interest was found as the highest weighted component. Among the components of the learning environment, the second-order weight is competition, participation in the third place, teacher support in the fourth and innovation in the last component. In addition, the global weights of sub-component was calculated. The evaluations study was conducted to evaluate the 9th grade chemistry course learning environment based on the opinion of the teacher who works as the head of chemistry course in a high school in Ankara were indicated that 61.8% of the chemistry course in the research has a medium learning level

Shortcut to long-distance developing of a tissue culture medium: micropropagation of mature almond cultivars as a case study

: Culture medium development methods are time-consuming, laborious, and require a large amount of experimental materials. The Nas hypothesis for the development of a micropropagation medium offers a less time-consuming and a less laborious approach. According to this hypothesis, the composition of a culture medium for a particular species should resemble the seed composition. In accordance with this hypothesis, first, an almond culture medium [Nas Almond Medium (NAM)] was developed based on almond kernel composition. Then, using mature tissues of almond cultivars, the growth of cultures on NAM was compared to that on Murashige and Skoog medium (MS), Woody Plant Medium (WPM), Driver and Kuniyuki medium (DKW), and Nas and Read medium (NRM). Medium composition had profound effects on the 3 growth parameters of number of shoots per explant, mean shoot length, and the productivity. With respect to mean number of shoots and mean shoot length, NAM was the best medium. NAM was also the most productive medium. NAM was up to 35%, 49%, 68%, and 69% more productive than NRM, MS, DKW, and WPM, respectively. The results suggest that formulating the composition of a culture medium based on the seed content can be a straightforward universal method of medium development for micropropagation

Subdividing large mountainous watersheds into smaller hydrological units to predict soil loss and sediment yield using the geowepp model

Our research was funded by Artvin Coruh University, Coordinatorship of Scientific Research Projects (project No: 2011.F10.02.13).The number of studies using prediction models on measuring soil loss and/or sediment yield has been continuously increasing since these models are considered timely and cost-effective. Similarly, in this study, we used the GeoWEPP model to determine how much soil is being lost and the amount of sediment being yielded from Godrahav Creek Watershed (GCW) located in northeastern Turkey. Because the watershed is large (5,298.21 ha) and has mountainous and steep terrain, it was subdivided into smaller hydrological units (SHUs) so that the model can run easily and give detailed findings. The results revealed that out of 18,596.8 t of soil loss generated from both hillslopes and channels within the whole GCW, approximately 9,854.8 t y(-1) reached Borcka Dam reservoir as sediment. The model also predicted annual average soil loss and sediment yield as 1.73 t ha(-1)y(-1) and 1,86 t ha(-1)y(-1), respectively. In addition, with a sediment delivery ratio (SDR) of 0.530, the results indicated that almost half of the detached soil particles were carried away as sediment. Despite the dominant vegetation coverage, relatively high SDR and soil loss - particularly in certain SHUs - can be associated with steep terrain and conversion of natural lands in the watershed

Artvin Düz dere havzası’nda toprak erozyonu durumunun tahmini

Aim of study: Main objective of this research was to predict some of the processes (soil loss, runoff and sediment yield) related to soil erosion with the help of WEPP (Water Erosion Prediction Project) model. Area of study: The WEPP model was applied to the Düz Creek Watershed (1059 ha in size). It is a subwatershed flowing into the greater Çoruh River Basin near the district of Borçka, Artvin. Material and methods: As required by the WEPP model, four large-data files of soil, climate, slope and plant cover/management were created for the watershed using the data gathered from in-field samplings (soil), laboratory analyses and GIS (Geographical Information Systems) assessments. For easier run and detailed investigation of soil erosion process of the research area, the studied watershed was divided into eight small hydrological units (SHUs) and the program was run on these SHUs. Main results: At the end of GeoWEPP’s run, the results revealed that a total of about 735 mm annual precipitation was fell within the study area. The model also predicted that there was approximately 207 mm as runoff out of this amount of precipitation, which, in turn, generated an annual total soil loss and sediment amounts as 2815.2 t and 2720.9 t, respectively. In addition, the sediment yield per unit area was estimated to be around 2.57 ton/ha/yr while the sediment delivery ratio (SDR) was found to be as 0.977. Lastly, the model predicted that the particle distribution of eroded sediment were 20%, 25% and 55% of clay, silt and sand, respectively, while the mean organic matter (OM) amount of the lost sediment was about 5% for the studied watershed. Highlights: Soil loss and sediment yield can be calculated for large areas in a short time and with little costÇalışmanın amacı: Havzada oluşan toprak kaybı ve sediment veriminin WEPP modeli ve CBS (Coğrafi Bilgi Sistemleri) tekniklerinin entegre edildiği GeoWEPP arayüzü kullanılarak kısa sürede ve az masrafla hesaplanması amaçlanmıştır. Çalışma alanı: Çoruh nehrine birleşen Düz Dere Havzası araştırma alanı olarak seçilmiştir. Materyal ve yöntem: GeoWEPP ara yüzü için gerekli olan iklim, eğim ve bitki amenajmanı dosyalarına ek olarak toprak dosyası oluşturulmuştur. Araştırma havzası sekiz alt havzaya bölünmüş ve program bu alt havzalarda yürütülerek toprak kaybı, yüzeysel akış ve sediment veriminin ortalama değerleri hesaplanmıştır. Sonuçlar: Çalışma sonucunda, havzaya 735 mm’lik yağış düştüğü ve bunun yaklaşık olarak 207 mm’sinin yüzeysel akışa geçtiği tahmin edilmiştir.1059 ha’lık bir alana sahip olan havzada yıllık toplam toprak kaybı ve sediment miktarı sırası ile 2815.2 ve 2720.9 ton olarak bulunmuştur. Bununla beraber, birim alandan ise 2.57 ton/ha/yıl sediment verimi gerçekleştiği hesaplanmıştır. Ortalama sediment iletim oranı yaklaşık 0.977 olarak bulunmuştur. Ek olarak, taşınan sediment içerisindeki ortalama kil oranının % 20, toz oranının % 25, kum oranının % 55, organik madde miktarının ise % 5 olduğu tahmin edilmiştir. Önemli vurgular: Toprak kaybı ve sediment verimi, büyük alanlar için kısa sürede ve daha az maliyetle hesaplanabili