Electrochemical investigation of 2-[8-hydroxyquinoline-5-yl)azo]benzo[c]cinnoline on a platinum electrode in dimethysulfoxide

2-[8-hydroxyquinoline-5-yl)azo]benzo[c]cinnoline was synthesized for the first time and shown to possess electrochromic characteristic, i.e. changing color during the forward and back electrolysis at -1.35 V and 0.00 V, respectively, in DMSO medium. Therefore, the electrochemical investigation of this compound appears to be worthwhile. The electrochemical reduction of 2[8-hydroxyquinoline-5-yl)azo]benzo[c]cinnoline was investigated by cyclic voltammetry, controlled potential electrolysis, and chronoamperometry techniques in the presence of 0.10 mol L-1 tetrabutylammonium tetrafluoroborate in dimethyl sulfoxide at platinum electrode. 2-[8-Hydroxyquinoline-5-yl)azo]benzo[c] cinnoline displays three sharp cathodic peaks and three anodic peaks in the cyclic voltammogram. The diffusion coefficients and the number of electrons transferred were calculated by using an ultramicroelectrode and platinum electrode. The number of transferred electrons was found to be one for each peak. The standard heterogeneous rate constant for reduction was calculated by the Klingler Kochi technique. The electrochemical reduction mechanism of 2-[8-hydroxyquinoline-5yl)azo]benzo[c]cinnoline was also investigated by using various electrochemical techniques, such as bulk electrolysis, and spectroscopic methods, like electron spin resonance spectroscopy. Bulk electrolysis results also provided evidence for each peak belonging to reduction of one electron, two of which were confirmed by electron spin resonance spectroscopy. This new chemical is found to be an electrochromic substance.TR Prime Ministry State Planning Organization [98 - K - 120830]; Ankara University Research FundAnkara University [20050705094]We gratefully acknowledge the financial support of TR Prime Ministry State Planning Organization (Project No: 98 - K - 120830) and Ankara University Research Fund (Project No: 20050705094)

The Role of Self-Construals on Gender Roles, Difficulties in Emotion Regulation and Psychological Symptoms

Benlik kurgusu, toplumsal cinsiyet, duygu düzenleme ve psikolojik belirtiler arasındaki ilişkiler yapılan çalışmalarda ele alınmıştır. Bu çalışmanın amacı, duygu düzenleme güçlükleri ve toplumsal cinsiyet tutumlarının psikolojik belirtiler (depresyon, anksiyete ve somatizasyon) üzerindeki etkisinde benlik tiplerine göre farklılaşma olup olmadığını incelemektir. Çalışmanın örneklemini, 273 kadın (%58) ve 198 erkek (%42) olmak üzere 471 katılımcı oluşturmaktadır (Ortyaş=33.86, S=10.5). Çalışma için katılımcılar Dengeli Bütünleşme-Ayrışma Ölçeği, Toplumsal Cinsiyet Rolleri Tutum Ölçeği, Duygu Düzenleme Güçlükleri-Kısa Formu, Kısa Semptom Envanteri (KSE) ve demografik bilgi formunu doldurmuştur. Yapılan çoklu doğrusal regresyon analizleri sonucunda psikolojik belirtileri yordayan değişkenlerde ve yordama güçlerinde benlik tiplerine göre farklılaşma olduğu görülmüştür. Buna göre, sadece kopuk-kendileşme benlik tipine sahip bireylerde olumsuz duyguları kabul etmede yaşanan güçlüklerin anksiyete düzeyini yordadığı görülmektedir. İlişkili-kendileşme benlik tipine sahip bireylerde eşitlikçi cinsiyet tutumları ve olumsuz duyguları etkin şekilde yönetme güçlüğü, ilişkili-kalıplaşma benlik tipine sahip bireylerde ise evlilik ile ilişkili cinsiyet tutumları ve dürtü kontrol güçlükleri somatizasyon düzeyini yordamaktadır. Ayrıca, kopuk-kendileşme benlik tipine sahip bireylerde değişkenlerin depresyon, anksiyete ve somatizasyonu yordama gücünün daha fazla olduğu görülmektedir. Çalışmadan elde edilen bulgular, psikolojik belirtilerin oluşumunda sosyal unsurların etkisine dikkat çekmekte ve benlik alanında yapılan araştırmalara katkıda bulunmaktadır.Previous studies have revealed the relationship between self-construals, gender roles, emotion regulation and psychological symptoms. The purpose of the study was to examine the effects of self-construals on the relationship between gender roles, emotion regulation difficulties and psychological symptoms (depression, anxiety, somatization). The sample of the study consists of 471 participants (273 females, 58%; 198 males, 42%; Mage=33.86, SD=10.5). Participants completed Balanced Integration-Differentation Scale (BID), Difficulties in Emotion Regulation-Brief Form (DERS-16), Gender Roles Attitude Scale, Brief Symptom Inventory (BSI) and demographic information form. The result of the Multiple Linear Regression analyses revealed that predictors of psychological symptoms and their predictive strength differed for self-types. Difficulty in accepting one’s emotions predicted anxiety only for the separated-individuation self-type. Egalitarian gender attitudes and difficulties in managing negative feelings predicted somatization for the relational-individuation self-type. Marriage related gender attitudes and impulsivity predicted somatization for the relational-patterned self-type. Additionally, the strength of predictions was higher for the separated-individuation self type. The study draws attention to social factors of psychological symptoms and contributes to the literature within the field of selfconstruals and psychological health

Health-related Quality of Life and Associated Factors Among Undergraduate University Students

Objectives: The aims of this study were to explore factors associated with health-related quality of life (HRQOL) among students of Cumhuriyet University, Turkey. Methods: This cross-sectional study involved 1751 undergraduate students. HRQOL was measured using the Turkish version of 36-Item Short Form Health Survey questionnaire. We looked at the effect of sociodemographic characteristics (e.g., gender, age, drinking, and smoking) on the individual HRQOL domains. Results: Place of residency (odds ratio (OR) = 3.947 for role emotion dimension), smoking status (OR = -2.756 for role physical dimension), received amount of pocket money (OR = 2.463 for mental health dimension), and body mass index (OR = 1.463 for mental health dimension) were the factors significantly associated with the HRQOL. Conclusions: Young students’ HRQOL is affected by socioeconomic, demographic, and behavioral factors. To improve student’s HRQOL, any health-promoting strategies should focus on modifiable risk factors and socioeconomic supports for students

Examination of the Relationship between P Wave Velocity and Physico-mechanical Properties of Limestone Marbles

Ultrasonik teknikler madencilik alanında ve jeoteknik uygulamalarda yaygın olarak kullanılmaktadır. Kayaç numuneleri üzerine kolay uygulanabilmesi, ekonomikliği ve basit bir şekilde numune hazırlanması vb. gibi olumlu özellikleri yöntemi çekici hale getirmektedir. Doğal taşların ultrasonik iletkenliğini etkileyen pek çok faktör mevcuttur. Bu çalışma kapsamında; farklı bölgelere ait kireçtaşı mermerlerinin tek eksenli basınç dayanımı, su emme oranı, Shore sertliği ve özgül ağırlıkları laboratuvar ortamında belirlenmiş ve P dalga hızı ile basit ve çoklu regresyon analizleri yapılarak ampirik formüller elde edilmiştir. Regresyon analizi, P dalga hızı değerlerinin tek eksenli basınç dayanımı, su emme oranı, Shore sertliği ve özgül ağırlık değerleri ile kuvvetli bir ilişki olduğunu göstermektedir.Ultrasonic techniques are widely used in mining and geotechnical applications. The positive features such as easy application on rock samples, economical and easy sample preparation make the method attractive. There are many factors that affect the ultrasonic conductivity of natural stones. In this study, uniaxial compressive strength, water absorption rate, Shore hardness and specific gravity of limestone marbles belonging to different regions were determined in the laboratory. Empirical formulas were obtained by performing simple and multiple regression analysis with P wave velocities measured from marble blocks. Regression analysis showed that P wave velocity values were strongly correlated with uniaxial compressive strength, water absorption rate, Shore hardness and specific gravity values

Investigation of the Relationship between Los Angeles Abrasion Resistance and Physico-Mechanical Properties of Limestone in Cukurova Region

Kireçtaşları inşaat, kimya ve yapı malzemesi üretimi gibi pek çok sektörde yaygın olarak kullanılmaktadır. İnşaat ve yapı malzemesi üretiminde kullanılan kireçtaşlarının belirli standartlarda olması gereklidir. Kireçtaşlarının aşınma direnci bu standartlardan biridir. Los Angeles testi, aşınma direnci değerinin değerlendirilmesi için kullanılan en yaygın testlerdendir. Fakat bu test yönteminin zorlukları vardır. Bu çalışmada, Çukurova bölgesi kireçtaşlarının Los Angeles aşınma direnci, tek eksenli basınç dayanımı, su emme oranı, Shore sertliği ve özgül ağırlıkları belirlenmiştir. Deney sonuçları temel alınarak Los Angeles aşınma direnci ile diğer parametreler arasındaki ilişkiler Minitab 18 kullanılarak araştırılmıştır ve Los Angeles aşınma direnci ile fiziko-mekanik parametreler arasında anlamlı ilişkiler elde edilmiştirLimestone is one of the most basic raw materials used in many sectors such as construction, chemistry and building material production. Limestones used in construction and building material production must be in certain standards. Abrasion resistance of limestone is one of these standards. The Los Angeles test is the most common test used for assessment of abrasion resistance value. But, this test method has difficulties. In this study, Los Angeles abrasion resistance, uniaxial compressive strength, water absorption rate, Shore hardness and specific gravity were determined limestone samples in Cukurova Region. Relationships between Los Angeles abrasion and the other parameters were investigated on the basis of experimental results by using Minitab 18 and meaningful relationships were obtained between Los Angeles abrasion resistance and physico-mechanical parameter

Investigation of Pyhsico-Mechanical Properties of Çamlıbel (Tokat) Diabases

Diyabaz, yüksek dayanım özelliğinden dolayı inşaat sektöründe yaygın olarak kullanılmaktadır. Bu çalışmada; Çamlıbel (Tokat) diyabazlarının bazı fiziko-mekanik özellikleri belirlenmiştir. Deneyler TS 699'a göre yapılmıştır. Deneysel çalışmalarda; Birim hacim ağırlık, su emme, porozite, eğilme dayanımı, don sonrası eğilme dayanımı, böhme aşınma dayanımı, tek eksenli basınç dayanımı ve sertlik değerleri bulunmuştur. Bütün bunların yanı sıra; kimyasal, petrografik ve mineralojik özellikleri de belirlenmiştir. Deneyler sonucunda diyabazın sınıflandırılması yapılmış ve ülkemizdeki standartlara uygun olup olmadıkları belirlenmiştir. Deney ve incelemeler sonucunda elde edilen veriler Çamlıbel (Tokat) diyabazlarının TSE Standartlarına göre yapılarda döşemede iç ve dış kaplamada kullanılabilir olduğunu göstermiştir.Diabase is widely used in construction industry because of highly strength properties. This study aims at determining the some physical and mechanical properties of Çamlıbel (Tokat) diabase. Experimental studies were determined according to TS 699. In this study, appearance, unit volume weight, water absorption ratio, hardness, porosity, flexural strength, böhme abrasion resistance, bending strength and bending strength value after frost were found. In addition to the chemical, petrographic and mineralogical characteristics were determined. According to the results of the experimental studies, the diabase samples have been classified and investigated if they are suitable to standards in country. In result of obtained data indicated the Çamlıbel of diabases usable in structure, floor, interior trim and shell by TSE standard

Electrochemical investigation of 2-[8-hydroxyquinoline-5-yl)azo]benzo[c]cinnolineon a platinum electrode in dimethysulfoxide

2-[8-hydroxyquinoline-5-yl)azo]benzo[c]cinnoline was synthesized for the rst time and shown to possesselectrochromic characteristic, i.e. changing color during the forward and back electrolysis at {1.35 V and 0.00 V,respectively, in DMSO medium. Therefore, the electrochemical investigation of this compound appears to be worthwhile.The electrochemical reduction of 2-[8-hydroxyquinoline-5-yl)azo]benzo[c]cinnoline was investigated by cyclic voltam-metry, controlled potential electrolysis, and chronoamperometry techniques in the presence of 0.10 mol L1tetrabutylam-monium tetra uoroborate in dimethyl sulfoxide at platinum electrode. 2-[8-Hydroxyquinoline-5-yl)azo]benzo[c] cinnolinedisplays three sharp cathodic peaks and three anodic peaks in the cyclic voltammogram. The diffusion coefficients andthe number of electrons transferred were calculated by using an ultramicroelectrode and platinum electrode. The num-ber of transferred electrons was found to be one for each peak. The standard heterogeneous rate constant for reductionwas calculated by the Klingler{Kochi technique. The electrochemical reduction mechanism of 2-[8-hydroxyquinoline-5-yl)azo]benzo[c]cinnoline was also investigated by using various electrochemical techniques, such as bulk electrolysis, andspectroscopic methods, like electron spin resonance spectroscopy. Bulk electrolysis results also provided evidence foreach peak belonging to reduction of one electron, two of which were con rmed by electron spin resonance spectroscopy.This new chemical is found to be an electrochromic substance

ELECTROCHEMICAL OXIDATION OF ATORVASTATIN AND ITS ADSORPTIVE STRIPPING DETERMINATION IN PHARMACEUTICAL DOSAGE FORMS AND BIOLOGICAL FLUIDS

WOS: 000299816100015Electrochemical behavior of atorvastatin (AT) and optimum conditions to its quantitative determination were investigated using voltammetric methods. Some electrochemical parameters such as diffusion coefficient, surface coverage of adsorbed molecules, electron transfer coefficient, standard rate constant and number of electrons were calculated using the results of cyclic voltammetry. A tentative mechanism for the oxidation for AT has been suggested. The oxidation signal of AT molecule was used to develop fully validated, new, rapid, selective and simple square-wave anodic adsorptive stripping voltammetric (AdsSWV) and differential pulse anodic stripping voltammetric (AdsDPV) methods to direct determination of AT in pharmaceutical dosage forms and biological samples. For the AdsDPV and AdsSWV techniques, linear working ranges were found to be 1.0 x 10(-7)-5.0 x 10(-6) and 3.0 x 10(-7)-5.0 x 10-6 mol l(-1), respectively. The detection limits obtained from AdsDPV and AdsSWV were calculated to be 6.55 x 10(-8) and 1.53 x 10(-7) mol l(-1), respectively. The methods were successfully applied to assay the drug in tablets, human blood serum and human urine.Ankara UniversityAnkara University [20050705094]We gratefully acknowledge the financial support from Ankara University Research Fund (Project No. 20050705094)

A Practice on the Emergency Action Plan in the Underground Chrome Operating

İş sağlığı ve iş güvenliği çalışmalarının amacı, iş kazalarından çalışanları korumak ve daha sağlıklı bir ortamda çalışmalarını sağlamaktır. Bunu sağlamak için riskler önceden öngörülmeli ve değerlendirilmelidir. Ayrıca iş güvenliği uzmanları tarafından acil durum eylem planı hazırlanmalıdır. Bu çalışmada, Hatay'da bulunan bir yeraltı krom işletmesindeki iş sağlığı ve güvenliği uygulamalarına yer verilmiş olup acil durum planı değerlendirilmiştir.Böylelikle iş kazalarının sayısının düşürülmesi hedeflenmiştir.The purpose of the occupational health and safety studies is to protect employees and provide in a healthy work environment. Therefore, risks in the workplace should be foreseen and previously evaluated. In addition to, emergency action plans must be prepared by occupational safety experts.In this study, occupational health and safety applications have been presented and emergency action plan has been done in a Chrome Mine in Hatay.In this way, it is aimed to reduce the number of job accidents