Radiological study on mandibular ramus asymmetry in young population

Background: The aim of this study was to estimate the prevalence of ramus asymmetries related to age and gender in a young population and the influence of growth spurt on ramus asymmetry. Materials and methods: The study consisted of 776 panoramic radiographs of individuals aged 9 to 21 years (335 males and 441 females). Individuals were divided into two groups with respect of linear growth spurt as age 12 in females and age 14 in males. The first group consisted of females aged between 9 and 11 and males between 9 and 13. The second group consisted of females aged between 12 and 21 and males between 14 and 21. Bilateral ramus heights on each radiograph were measured. A panoramic software programme was used to measure the ramus heights. Quantitative data was tested by Student’s t test. Qualitative data was tested by χ2 test. The intraclass correlation coefficient was calculated for the magnitude error of the measurement. Results: The mean of ramus asymmetry was found to be 2.90% ± 2.58%. Significant differences between the right and left ramus height ratios were observed (p < 0.01). There was a high prevalence (10.8%) of ramus asymmetry, which did not correlate with the age and gender of the patients. Conclusions: This study revealed a high prevalence of ramus asymmetry in 9–21- -year-old population. Within the limitations of this study, it can be concluded that ramus asymmetry should be carefully evaluated in all ages for the potential relation with temporomandibular dysfunctions and also for orthodontic anomalies

Mobile robotic teleguide based on video images

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Soyut Dışa Vurumcu Sanatta Mark Rothko ve Barnett Newman’ın Renk Alanı Yaklaşımlaının Karşılaştırılması

Tez (Yüksek lisans) -- Giresun Üniversitesi. Kaynakça var.xix, 177 s. ; 28 cm.Demirbaş: 0063232

On-site and low-cost detection of cyanide by simple colorimetric and fluorogenic sensors: Smartphone and test strip applications

Erdemir, Serkan/0000-0003-0790-0549WOS: 000491635300009PubMed: 31594612Cyanide is potentially hazardous and quickly acting chemical used in many fields of industry. Therefore, detection of cyanide is of main health concern due to its serious impacts on living organisms. In this context, we have developed rapid, low-cost and on-site sensory two molecules for the colorimetric and fluorogenic sensing of cyanide ion in aqueous samples and food samples. The prepared probes undergo distinct visual color change and exhibits selective fluorogenic turn-on or turn-off response towards cyanide. Competing anions have little or negligible effect on the detection of cyanide. The limit of detection for cyanide ion was calculated as low as 0.45 mu M. Free receptors could be successfully regenerated by treating them with Ag+ ion. Moreover, a new visual colorimetric strip based on paper was fabricated with the pale yellow-to-pink color change signal. The fabricated test strips also demonstrated excellent selectivity towards cyanide ion without interfering possible fluoride and acetate ions. The smartphone-based technique which could directly read out the color value using a smartphone revealed an excellent potential for the cyanide detection without additional device.Research Foundation of Selcuk UniversitySelcuk UniversityWe thank the Research Foundation of Selcuk University for financial support of this work

Dual-emissive fluorescent probe based on phenolphthalein appended diaminomaleonitrile for Al3+ and the colorimetric recognition of Cu2+

Erdemir, Serkan/0000-0003-0790-0549WOS: 000457666300041A novel dual emissive fluorescent probe was designed and synthesized by linking phenolphthalein and diaminomaleonitrile units. The present probe (PDM) can be used not only for fluorogenic detection of Al3+ by way of the excited enol-keto forms but also colorimetric detection of Cu2+. PDM probe showed a selective fluorescence enhancement with dual channel emissions for Al3+ in a mixture of EtOH/H2O (9/1). H-1 NMR and DFT methods were also carried out to support the complexation between PDM and Al3+ ion. In addition, PDM presented highly selective colorimetric response for Cu2+ over other metal ions. The reversibility of PDM-Al3+ and PDM-Cu2+ complexes was successively established with the addition of TBAF and EDTA, respectively. The detection limits were determined to be 92.0 nM for Al3+ and 2.81 mu M for Cu2+. The obtained results revealed that the designed PDM probe could be suitable for monitoring Al3+ under UV lamp and Cu2+ in water samples with the naked eye, which was rapid, convenient, low-cost and environmental friendly.Research Foundation of Selcuk UniversitySelcuk UniversityWe thank the Research Foundation of Selcuk University for financial support of this work

Design of Luminescent Materials with "Turn-On/Off" Response for Anions and Cations

The detection of biologically important and environmentally pollutant anions and cations has become an essential task in many fields such as clinical, biomedical, and environmental monitoring, agriculture, and process controlling. The determination and control of them are of great interest to many scientists including chemists, biologists, clinical biochemists, and environmentalists since they play important roles. To date, a variety of analytical methods have been used in the detection of anions and cations. But, these methods require expensive analytical instruments and sophisticated experimental instrumentation and are timeconsuming due to a sample collection, transportation, and pretreatment. In the past years, the development of luminescent materials for the detection of anions and cations has received great attention. Fluorescence detection provides several advantages such as high sensitivity, simple instrumentation, facile analysis, intrinsic selectivity, and the capacity for rapid, real-time monitoring over other mentioned methods and generally involves the design and synthesis of a luminoionophore containing more than one binding sites and a signaling unit. A number of selective luminescent probes on the basis of the nature of the luminophore including rhodamine, triphenylamine, coumarin, calixarene, pyrene, BODIPY, 8-hydroxy-quinoline, anthraquinone, BINOL, and salicylicnaphthaldehyde units have been reported. The present article does not, however, attempt to cover all of the different approaches to luminescent materials for anions and cations. © 2017 Scrivener Publishing LLC. All rights reserved

Calix[4]arene based a NIR-fluorescent sensor with an enhanced stokes shift for the real-time visualization of Zn(II) in living cells

Erdemir, Serkan/0000-0003-0790-0549WOS: 000507459500008Zinc(II) plays key roles actively involved in fundamental biological functions in the body. However, zinc dysmetabolism results in a number of human diseases. Therefore, miscellaneous techniques are needed to understand the complete biological role of Zn(II) in tissues and cells. Here, we introduce a novel calix[4]arene derivative (CIP), appended with two isophorone units via a 4-bromophenol linker for the fluorescence sensing Zn (II). CIP showed high fluorogenic selectivity for Zn(II) over a wide range of biologically and environmentally relevant metal ions in DMSO/H2O (v/v, 8/2, PBS buffer, 0.5 mM, pH 7.4) and has superior sensitivity of (6.75 nM) for Zn(II). Free CIP has very low emission but demonstrated the distinct "turn-on" emission enhancement response toward Zn(II) at near infrared region. CIP allowed the fabrication of a rapid and convenient TLC strip sensor for Zn(II)-selective detection. Moreover, this is the first report on a calix[4]are derivative used as a NIR fluorescence probe that monitors changes in intracellular Zn(II) levels and can penetrate into living cells.Research Foundation of Selcuk University (BAP)Selcuk University; Biochemistry Department of Selcuk University-TurkeyAuthors are thankful to the Research Foundation of Selcuk University (BAP) for financial assistance. Also, we acknowledge the help from Assoc. Prof. Serdar Karakurt, Biochemistry Department of Selcuk University-Turkey, in living cell imaging studies