160 research outputs found

    A Research on Book Reading Habits of Turkish Teachers

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    Reading is the act of understanding and interpreting itself and its surroundings from the moment that human being is present. Therefore, individuals those who would like to know the environment better should have gained the reading habit. Turkish teachers are one of the effective factors in the acquisition of reading habits. It is necessary for the Turkish teachers who are role-models in every sense to be an example in reading books and encourage them. The purpose of this research is to examine the reading habits of Turkish teachers. In the study, the screening model was pursued with purpose of the determine the reading habits of Turkish teachers. As for that the sample of the research, is consist of 92 Turkish Teachers. By using easily accessible sampling method in the study, the teachers, who are on duty in these two countries, have been involved in the study. In order to collect data in the study, "Personal Information Form", where 4 questions about teachers 'personal information were prepared, and prepared "Reading Habit Form", which was used to describe teachers' reading habits, were being used. As a result of the study, it has been determined that Turkish teachers read regular books, have limited time to read daily books, prefer literary works to read frequently, do not follow any newspaper or magazine, and can not allocate the necessary budget for the book

    Paketleme Makineleri İmalat Sektöründe Risk Değerlendirme

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    Tezsiz Yüksek Lisans Bitirme ProjesiPaketleme makineleri gıda, ilaç, kozmetik ve diğer sektörlerde yaygın olarak kullanılan önemli bir üretim aracıdır. Ancak bu makinelerin kullanımı, çalışanların sağlık ve güvenliğine zarar verebilecek iş güvenliği riskleri içermektedir. Bu nedenle, personellerin güvenliğini sağlamak için paketleme makinelerinin çalışma güvenliğine ilişkin bir risk analizi gereklidir. Paketleme makinelerinin çalışma güvenliği risk analizinin amacı, makinelerin kullanımlarından kaynaklanan tehlikeleri tespit etmek, bu tehlikeleri değerlendirmek ve riskleri azaltmak için gerekli önlemleri uygulamaktır. Bu analiz, çalışanların sağlığı ve güvenliği açısından oldukça önemlidir ve paketleme makinelerini yapım aşamasında ve sonrasında doğabilecek riskleri en aza indirmeyi amaçlar. Paketleme makineleri ile ilgili çeşitli tehlikeler vardır. Bu tehlikeler arasında parmakların kırılması veya kesilmesi, sıkışma ve ezilme tehlikeleri, yanma veya patlama tehlikeleri, sıvı veya kimyasallarla temastan kaynaklanabilecek cilt veya göz yanıkları, gürültü ve titreşim nedeniyle işitme kaybı, nefes almada güçlük ve benzeri tehlikeler yer alır. Paketleme makinelerinin çalışma güvenliğine ilişkin bir risk analizi yapılırken, öncelikle potansiyel tehlikeler belirlenmelidir. Bu aşamada makinelerin tasarım özellikleri, çalışma prensipleri ve üretim amaçları hakkında detaylı bilgi almak önemlidir. Analiz yapılırken makinelerin çalışma ortamı kadar çalışanların deneyim ve eğitim düzeyi de göz önünde bulundurulmalıdır. Tespit edilen riskler olası sonuçları ve sıklıklarına göre değerlendirilmeli ve gerekli önlemler alınmalıdır. Paketleme makinelerinin operasyonel güvenlik riskleri çeşitli önlemlerle azaltılabilir. Bu önlemler arasında makinelerin düzenli bakım ve onarımları, çalışanların eğitimi, koruyucu ekipmanlar vb. hepsini bu çalışma kapsamında irdelenecektir

    Safe building design by small architects: A design activity developed for elementary mathematics course

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    This study aims to develop an acquisition-oriented STEM activity that primary school teachers can implement in the classroom. The design-based teaching activity developed and implemented within this study is intended to be presented as an example of an activity suitable for STEM education focused on mathematics lessons. The activity was developed in line with the design process indicators within the K-12 engineering education framework. The steps of this framework are (1) problem and background, (2) plan and implementation, and (3) testing and evaluation. The activity particularly targets elementary school students produce an engineering design product using simple and low-cost materials. The four criteria presented to the students in this process were (1) apartments receiving light, (2) being earthquake resistant, (3) being economical and (4) aesthetics and marketing. Throughout the design process, the criterion that students had the most difficulty was observed as the sun exposure of the flats.  Also, most of the students focused more on the aesthetic criterion than other criteria, and they emphasized this criterion most in the marketing process of their products

    Geometric and spectral analysis of open-pit mining with photogrammetric method: The case of Bigadiç Boron Mine

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    Bu çalışmada, maden ocağında mevcut olan farklı katmanlar, yakın resim fotogrametrisi tekniği ile tespit edilmiş ve bu katmanların yoğunlukları hesaplanmıştır. Fotoğraf çekimi için sırasıyla RGB, multispektral ve termal bant özelliklerine sahip üç farklı kamera kullanılmıştır. Daha sonra üç boyutlu nokta bulutları, modeller ve ortofotolar oluşturulmuştur. Üç ortofotodan elde edilen yedi adet bant ile farklı indeks uygulamaları ve temel bileşen analizi (TBA) gerçekleştirilmiştir. TBA ile elde edilen ortofoto ile beraber toplam dört ortofoto görüntüsünde, madende yer alan farklı birimlerin tespiti için kontrolsüz sınıflandırma, termal ortofoto hariç üç ortofotoda ise kontrollü sınıflandırma işlemi gerçekleştirilmiş ve doğrulukları test edilmiştir. Yapılan kontrolsüz ve kontrollü sınıflandırma işlemlerinde en iyi doğruluk sırasıyla %60 ve %80 oranları ile TBA ile elde edilen ortofoto kullanılarak hesaplanmıştır. Ayrıca, kullanılan indekslerin zeolitik tüf tespitinde %86.67, bor tespitinde ise %80 doğruluk oluşması, tespit için kontrollü sınıflandırmaya göre daha iyi bir seçenek olduğu anlaşılmıştır. Kazı çalışmalarının yapıldığı iki bölgede hacim hesabı için RGB kamera ile çekimler gerçekleştirilmiştir. Hafriyat hakedişi için hesabın hacim üzerinden belirlenmesinin daha doğru olduğu sonucuna ulaşılmıştır.Within the scope of this study, the different layers which represent different rocks in the mine were determined with the terrestrial photogrammetry technique, and the densities of these layers have been calculated in the laboratory. Three different cameras with RGB, multispectral and thermal band characteristics were used for taken images, respectively. After that, three-dimensional point clouds, models, and orthophotos were created. A number of different index applications and principal component analysis (PCA) were performed with seven bands obtained from three orthophotos. The unsupervised classification was carried out for the four orthophotos. Otherwise, in the supervised classification, thermal orthophotos did not use due to low resolution. In the unsupervised and supervised classifications, the best accuracy was calculated using the orthophotos obtained with PCA, with the rates of 60% and 80%, respectively. In addition, it has been understood that the used indices have 86.67% accuracy in zeolitic tuff detection and 80% accuracy in boron detection. This shows us using the indices is a better option for detection than supervised classification for this study. At the two different stations where the excavation works were carried out, RGB camera shots took for volume calculation. It has been concluded that it is more accurate to determine the calculation over the volume for excavation

    Plasma lipoprotein(a) levels in patients with slow coronary flow

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    WOS: 000327688400001PubMed ID: 24570746Introduction: Slow coronary flow (SCF) is a microvascular disorder characterized by delayed opacification of coronary vessels with normal coronary angiogram. It may be due to endothelial dysfunction and diffuse atherosclerosis. Lipoprotein(a) [Lp(a)] is related to cardiovascular events. Plasma Lp(a) levels have not been studied previously in SCF patients. Aim: We investigated plasma Lp(a) and fibrinogen levels, and their relation to coronary flow rate in patients with SCE Material and methods: This cross-sectional study included 50 patients with SCF and 30 age- and sex-matched controls who had normal coronary arteries and normal flow. Coronary flow rates of patients and controls were counted with the thrombolysis in myocardial infarction (TIMI) frame count. Plasma Lp(a) and fibrinogen levels were measured in SCF patients and controls, with routine biochemical tests. Results: There were no significant differences between the two groups with respect to plasma Lp(a) (21 mg/dl vs. 14 mg/dl, p = 0.11) and fibrinogen (278 mg/dl vs. 291 mg/dl, p = 0.48) levels. The TIMI frame count was not correlated with plasma Lp(a) (r = 0.13, p = 0.25) or fibrinogen (r = -0.14, p = 0.28) levels. Conclusions: Our results show that there is no significant association between SCF and Lp(a) and fibrinogen levels

    Determination of bisphenol a and phthalate levels in wastewater samples

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    Objective: The use of endocrine-disrupting chemicals (EDCs) such as bisphenol A (BPA) in plastics manufacturing, agriculture, livestock, and paint manufacturing increas daily. The water treated in wastewater treatment plants is used in many areas such as irrigation of parks and gardens, and reinforcement of underground water resources. However, whether the treatment process eliminates EDCs in wastewater is not exactly known, and determining this as well as the amounts of these chemicals in treated water are important in terms of protecting the environment and human health. The aim of the study was to determine BPA and phthalate concentrations in the influent and effluent flow samples obtained from wastewater treatment plants. Materials and Methods: BPA and phthalate concentrations were measured in influent and effluent flow samples using the enzyme- linked immunosorbent assay (ELISA) method. BPA and phthalate measurements were performed as competitive measurements of BPA and total phthalates in samples using specific monoclonal antibodies. Results: BPA and phthalate levels were measured respectively as 7.69 μg/L and 78.27 μg/L in the influent water samples and 3.17 μg/L and 25.56 μg/L in the effluent water samples. The concentration of BPA and phthalates in the effluent samples decreased significantly compared to the influent water samples. Conclusion: This study is believed to shed light on the importance of monitoring BPA and phthalate concentrations in wastewater treatment plants and inspections for detecting other EDCs in wastewater

    Immediate recovery of the left atrial and left ventricular diastolic function after transcatheter aortic valve implantation: A transesophageal echocardiography study

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    Background: Chronic increased afterload due to severe aortic stenosis (AS) results in com­pensatory concentric left ventricular (LV) hypertrophy and LV dysfunction. These in turn cause remodeling of the left heart. The aim of this study was to investigate the acute effect of transcatheter aortic valve implantation (TAVI) on left atrial (LA) mechanics and LV diastolic function. Methods: The study consisted of a total of 35 consecutive patients (mean age was 77.7 ± 5.0 years, 25 female) undergoing TAVI. All TAVI procedures have been performed under the transesophageal echocardiography (TEE) guidance. Before and 24 h after TAVI, all patients underwent transthoracic echocardiography (TTE) and mitral inflow velocities with pulsed-wave (PW) Doppler including early filling wave (E), late diastolic filling wave (A), and E/A ratio were obtained. LV diastolic function was also explored by pulsed tissue Doppler imaging (TDI). Early (E’) and late (A’) diastolic annular velocities, E’/A’ ratio and E/E’ ratio were obtained. In addition, during the procedure before and minutes after the valve implantation, the left atrial appendage-peak antegrade flow velocity (LAA-PAFV) was measured and recorded with TEE. Results: Compared with baseline, the mean mitral E, septal E’ and E’/A’ ratio increased significantly after TAVI. In addition, the LAA-PAFV increased significantly within minutes of TAVI (32.45 ± 10.7 cm/s vs. 47.6 ± 12.6 cm/s, p < 0.001). Conclusions: TAVI improves LV diastolic function and LA performance immediately

    Impact of transcatheter aortic valve implantation in patients with reduced ejection fraction

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    Background: Aortic stenosis increases with age. According to guidelines, left ventricular systolic dysfunction is an indication for aortic valve replacement, even in asymptomatic patients. There is no clear data on the application of transcatheter aortic valve implantation (TAVI), which is a method showing continuous improvement in recent years, in patients with reduced ejection fraction (REF) having a poor prognosis for surgical aortic valve replacement. We therefore aimed to investigate the effect of TAVI on left ventricular ejection fraction (LVEF) and also its efficacy and safety in patients with REF. Methods and results: The study included 104 patients who underwent transfemoral TAVI in our clinic. The patients were divided into two groups: LVEF ≤ 45% (REF group, n = 28) and LVEF > 45% (preserved ejection fraction [PEF] group, n = 76). Follow-up measure­ments were performed at baseline, discharge, 1st, 6th and 12th months. No statistical difference was found between the groups with respect to complications and mortality rates. A statistically significant difference was detected in LVEF after TAVI, either in all patients (53.9 ± 14.6, 57.0 ± 11.4, 59.4 ± 8.4, 60.4 ± 6.8, 63.2 ± 3.9, respectively, at baseline, discharge, 1st, 6th and 12th months, p < 0.001) or in the groups separately. A statistically significant increase in LVEF (p < 0.001) was determined at discharge, 1st, 6th and 12th months, whereas LVEF increased in all follow-ups of the PEF group, however this elevation reached a statistical significance only at the 1st month (p = 0.04). Conclusions: Our study has shown the positive effect of TAVI on LVEF and its effective and safe applicability in patients with REF.

    Bilateral Quadriceps and Concomitant Unilateral Triceps Tendon Rupture in a Chronic Hemodialysis Patient

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    Spontaneous bilateral quadriceps rupture is rarely seen in systemic diseases. Although the underlying mechanism in tendon rupture is not clearly understood, β2-amyloidosis, chronic acidosis, impaired collagen metabolism, accumulation of uremic toxins and secondary hyperparathyroidism are held to be responsible. The patients with bilateral spontaneous quadriceps rupture can be able to achieve significant functional improvement with the postoperative rehabilitation program. In this article, we aimed to present a patient with hemodialysis who developed spontaneous bilateral quadriceps and unilateral triceps rupture and discuss in company with the literature
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