Kinetic estimation of the adsorbate distribution on the surface from adsorbed amounts

A phenomenological multilayer adsorption model for a well-dispersed, homogeneous, nonporous adsorbent and a molecular adsorbate is presented. The model provides explicit kinetic expressions associating the adsorbed amounts to the fraction of the surface occupied and reduces to the first- and second-order adsorption models for special cases. Parameters of the model are a pair of true rate constants related to the adsorbate-adsorbent and adsorbate-surface adsorbate affinities. A general graphical procedure and analytical equations for special cases are provided to estimate the rate constants from kinetic adsorption data. Data from the adsorption of sodium stearate onto α-alumina from water were used to test the model. The predicted values of the rate constants suggested that the stearate was distributed homogeneously on the alumina surface and essentially adsorbed as a monolayer before starting to form the second layer

The Evaluation of Health Education Program (HEP) of 9th Graders

The main purpose of evaluation is to improve the quality of program. So, the purpose of this study was to evaluate the Health Education Program of 9th graders (HEP) with Educational Criticism Model of Eisner. The study was conducted with the qualitative research method. A holistic single case design was employed in this study. The typical case sampling technique was used because we were interested in the normality/typicality of the case. Self-administered questionnaire was presented to respondents. Open-ended questions were employed in this study to give respondents an opportunity to speak their mind. The semi-structured interviews and discussions were conducted individually for a period of approximately two months. The texts that obtained after interview were subject to content analysis with the MAXQDA 12 software. The HEP was in the right way in terms of HEP and language, HEP and information and communication technologies, living, personal and interpersonal skills, critical and creative thinking, approaches and methodologies and assessment. However, in terms of program goals and objectives, program dimensions, time and materials and, staff development, it needed to be improved. With necessary and continuous changes in HEP, it has a potential for the higher quality of education. Keywords: Educational Criticism Model, Health Education Program (HEP), Program Evaluation

Suni Arı Kolonisi Yöntemi Kullanılarak Soğuk Şekillendirilmiş İnce Cidarlı Çelik Kesitlerden Yapılan Az Katlı Çelik Çerçevelerin Tasarım Optimizasyonu

Konferans Bildirisi -- Teorik ve Uygulamalı Mekanik Türk Milli Komitesi, 2015Conference Paper -- Theoretical and Applied Mechanical Turkish National Committee, 2015Çevre risk altında ve bu yüzden yapı mühendisliği tasarımı uzmanlık alanı yapılar için tasarım yaklaşımlarını dikkatli bir şekilde yeniden gözden geçirmelidir. Binaların yapısal sistemlerinde bulunan gömülü karbonun hatırı sayılır derecede önemli olduğu ve binaların çevresel etkilerinin zararlı olduğu tespit edilmiştir. Yapısal malzemeler çoğunlukla doğal kaynakları kullanır. Büyük miktarda karbon, yapısal malzemelerin çıkartılması, arıtılması ve kurulumu sırasında atmosfere yayılır. Soğuk şekillendirilmiş ince cidarlı çelik kesitlerin yapı elemanı olarak kullanılması, yapı sektörü için başlangıçta ki çevresel etkileri uzlaştırılmış yenilikçi, çevreci malzemeler ve uzun vadeli dayanıklılığa sahip sürdürülebilir (çevreci) yapı sistemleri sağlar. Bu makale, tasarım yönetmeliklerinde belirtilmiş olan sınırlayıcıları sağlayacak şekilde minimum çerçeve ağırlığına ulaşmak için soğuk şekillendirilmiş ince cidarlı çelik kesitleri elde eden bir tasarım algoritmasının geliştirilmesi ve iyileştirilmesi üzerine bir araştırmaya ışık tutamaktadır. Suni Arı Kolonisi (SAK) yöntemi geliştirilen tasarım algoritmasında çözüm aracı olarak kullanılmıştır. Bu yöntem, bal arısı kolonilerinin zeka davranışlarını taklit eden yeni optimizasyon yöntemlerinden biridir. SAK metodu ile yapılan en son çalışmalar, birleşimsel optimizasyon problemlerinin optimum çözümünü bulmada bu yöntemin etkinliğini ve sağlamlığını göstermiştir. Bir tasarım örneği geliştirilen optimum tasarım algoritmasının etkinliğini göstermek için eklenmiştir.The environment is at risk, and thus the structural engineering design profession needs to carefully reconsider design approaches to structures. Embodied carbon of structural systems in buildings has been established to be considerable and detrimental the environmental impact of the buildings. Structural materials use mostly natural resources. Large amounts of carbon are emitted into the atmosphere during the extraction, refinement, and installation of structural materials. Using cold-formed thin-walled steel sections as structural members provides a sustainable structures framework that reconciles initial environmental impacts of innovative, green materials and long-term durability for construction industry. This paper highlights a research on the development and implementation of a design algorithm to obtain cold-formed thin-walled steel sections in order to reach minimum frame weight while satisfying the constraints specified by design codes. Artificial Bee Colony (ABC) technique is used as a solution tool in improved design algorithm. This technique is a recent numerical optimization technique which mimics the intelligent behavior of honey bee swarm. The recent studies with the ABC method have shown its effectiveness and robustness in finding the optimum solution of combinatorial optimization problems. A design example is included to demonstrate the efficiency of the optimum design algorithm developed

Kuzeydoğu Anadolu Bölgesi’nde hayvancılık sektörünün mevcut durumu ve çiftçilerin beklentileri

06.03.2018 tarihli ve 30352 sayılı Resmi Gazetede yayımlanan “Yükseköğretim Kanunu İle Bazı Kanun Ve Kanun Hükmünde Kararnamelerde Değişiklik Yapılması Hakkında Kanun” ile 18.06.2018 tarihli “Lisansüstü Tezlerin Elektronik Ortamda Toplanması, Düzenlenmesi ve Erişime Açılmasına İlişkin Yönerge” gereğince tam metin erişime açılmıştır.Kuzeydoğu Anadolu Bölgesi'nin bir alt bölgesi olan TRA2 Bölgesi, Türkiye'de gelişmişlik düzeyi en düşük olan Ağrı, Iğdır, Kars ve Ardahan illerimizi bünyesinde barındırmaktadır. Bölgenin kalkınması için uygulanan politikaların ve sağlanan teşviklerin bölgenin kalkınmasına yeterli katkı sağlamadığı, bölge ile ülkenin batı kesimi arasındaki gelişmişlik farkı gittikçe derinleştiği görülmektedir. Bu tez çalışmasında, bölge ekonomisi için büyük önem arz eden hayvancılık sektörü ele alınmıştır. Çalışmamızda, öncelikle Türkiye'de genel olarak hayvancılık sektörünün tarihsel süreci, mevcut durumu, karşı karşıya olduğu sorunlar ve ekonomik açıdan önemi işlendikten sonra Türkiye'de hayvancılığın en yoğun olduğu bölgelerden biri olan TRA2 Bölgesi'ndeki hayvancılık sektörünün yapısına ve bölge ekonomisindeki önemine değinilmiştir. Diğer yandan son bölümde ise TRA2 Bölgesi'nde hayvan yetiştiricileri ile yapılan anketler SPSS Programında analiz edilip, çözüm önerileri getirilmiştir. Bu çalışma sunucunda, TRA2 Bölgesi için çok büyük öneme sahip olan hayvancılık sektörü için hükümetin çok ciddi teşvikler ve yatırımlar yapması, bölgede eğitim seminerlerin verilmesi, örgütlenmenin teşvik edilmesi, hayvansal ürünlerin ve kaba yem fiyat istikrarının sağlanması gibi çözüm önerileri getirilmiştir.TRA2 is a sub-region of Northeastern Anatolia that includes the lowest developed provinces; Agri, Igdir, Kars and Ardahan. Endeavor of development policies and incentives provided to region is not enough to contribute to the development of the region, so disparities between region and the western part of the country is deepening. In this study, the livestock sector which has vital importance for region economy is discussed. In this study, after searching generally the livestock sector historical process, the current state, problems and economic importance, it focuses on livestock industry and its structure of processing animal husbandry in the most intense region, TRA2. Finally, surveys are applied to TRA2 livestock industry owners. It is analysied by SPSS then some solutions are suggested. According to this study, TRA2 Area has immense importance of having livestock sector and governments should take serious steps such as much incentives, increasing investments in the region, training seminars, promoting cooperatives, animal products, stabilizing of fodder price

THE EFFECTS OF UNDER GRADUATE STUDENTS' MENTAL (PSYCHOLOGİCAL) TOUGHNESS ON THE LEADERSHİP LEVEL

The aim of this research is to determine the relationship between mental endurance and leadership levels of the candidates who are studying in Erciyes University School of Physical Education and Sports Inspection. The student's universe consists of 436 students of Physical Education and Sports. As means of data collection in the survey were used Mental (psychological) endurance scale, Leadership orientation scale and Personal information form. Statistical analyzes were performed with the SPSS 20.0 package of data obtained from Personal Information Form, Mental (Psychological) endurance and Leadership orientation scale. The personal information and inventory total scores and factor scores for the candidates were determined by determining frequency (f) and percent (%) values. Multiple regression analysis was applied to determine whether Pearson Moments Multiplication Correlation analysis (r) and their scores were predictive in order to reveal the relationship between scores obtained from the scales. (Β). While there is a low level of positive relationship between self-confidence and human resources framework and negative environmental and structural environmental scores, there was no significant relationship between attention control, visualization, level of motivation, positive energy and attitude control scores, structural environment, human resources framework, political environment and symbolic environmental scores. The model presents a meaningful relationship between negative energy and leadership orientations. When the t-test results on the significance of the regression coefficient are examined, structural environment leadership orientation, mental stability and 13% of the total variance. There was no significant relationship between self-confidence, attention control, visualization, motivation level, positive energy and attitude control, and leadership orientation, and mental stability was not predictive of leadership orientations. As a result; It is thought that the individuals with high mental stability show effective leadership behaviors and the positive attitudes and behavioral behaviors demonstrated by the leadership strengthen the mental endurance of the individuals

Is arthroscopic intervention-assisted fragment-specific fixation technique superior to volar plating in distal radius fractures involving the middle column?

Purpose: In this study, the clinical and radiological results of volar plating and arthroscopic intervention-assisted fragment-specific fixation techniques used in patients operated for AO Type B-C distal radius fracture in which the medial colon is affected were compared. Materials and Methods: X-ray and clinical records of 98 patients who underwent surgical treatment for radius distal end (DER) fracture between April 2011 and January 2017. The patient groups treated with arthroscopy-assisted fragment-oriented fixation (Group A) and plate screw fixation with a volar approach without arthroscopic intervention (Group B) were compared in terms of joint range of motion, grip strength, and clinical scores. Flexion and extension, ulnar deviation, radial deviation, pronation, and supination angles measured with a standard goniometer were recorded in the joint range of motion measurement. Grip strength was measured with a Jamar dynamometer for power measurement. DASH score was used in clinical evaluation. Results: When the operated wrists of both patient groups were compared, there was no significant difference between the DASH score, grip strength, palmar flexion, and pronation angles of motion. A statistically significant difference was observed between the mean dorsiflexion angles of 55 degrees in group A and 44 degrees in group B, mean radial deviation angles of 25 and 19 degrees, and the mean supination angles of 87 and 80 degrees, respectively. Conclusion: Although arthroscopic-assisted fragmentspecific fixation is technically a laborious procedure that requires a learning curve in patients with intra-articular distal radius fractures, it may be beneficial to provide better postoperative results, especially in young patients with high range of motion expectations

Influence of dispersing agents on the solubility of perovskites in water

In this study, solubility behavior of lead magnesium niobate (PMN) powders in water was investigated in the presence of pure polyacrylic acid and polyacrylic acid/polyethylene oxide comb polymers. Experiments were performed by measuring the solubility of PMN in terms of the concentration of Pb+2 and Mg+2 ions in supernatant as a function of pH and dispersing agent dosage. The concentrations of the metal ions in supernatant were found to be affected by the dispersant concentration, stirring time and the suspension pH. Results revealed that both dispersing agents enhance the cation dissolution from PMN surface at pH 9 due to weak (reversible) adsorption and complexation of Pb+2 and Mg+2 by carboxylate groups. On the other hand, under acidic conditions cation dissolution from PMN is inhibited and this was attributed to the strong adsorption of dispersing agents onto the powder surface and formation of a dense polymer layer

First report of Fusarium avenaceum causing branch canker on pear in Turkey

Pear (Pyrus communis) is an important fruit crop in Turkey. In May 2021, canker lesions were observed in pruning wounds on approximately 70% of the pear trees cultivar Deveci in a fve-year-old orchard in Bursa province, Turkey. Disease symptoms were twig blight, brownish bark and branch canker. Twenty small pieces from branch lesions were surface disinfected with 1% NaOCl solution for 3 min and placed on potato dextrose agar. Petri dishes were incubated for 10 days at 23 °C. All colonies were Fusarium-like with the production of a yellow to rose pigment and a dark pink to red reverse with abundant white aerial mycelium