Inner automorphisms of Lie algebras related with generic 2 × 2 matrices

Let Fm = Fm(var(sl₂(K))) be the relatively free algebra of rank m in the variety of Lie algebras generated by the algebra sl₂(K) over a field K of characteristic 0. Translating an old result of Baker from 1901 we present a multiplication rule for the inner automorphisms of the completion Fmˆ of Fm with respect to the formal power series topology. Our results are more precise for m = 2 when F₂ is isomorphic to the Lie algebra L generated by two generic traceless 2×2 matrices. We give a complete description of the group of inner automorphisms of Lˆ. As a consequence we obtain similar results for the automorphisms of the relatively free algebra Fm / Fm c⁺¹ = Fm(var(sl₂(K)) ∩ Nc

How do ICT firms in Turkey manage innovation? : diversity in expertise versus diversity in markets

This paper provides a novel taxonomy of firms based on specialisation versus diversification in production and markets. Firms may chose to specialise on few production activities or alternatively may build expertise in many activities. There is an accompanying decision when firms sell their products: whether to serve few or many markets. We argue that the location on the specialisation-diversification spectrum significantly affects how firms manage innovation. For a sample of 90 innovator ICT firms in Ankara we find that cooperation structure, sources of innovation and funding of R&D display statistically significant different patterns according to the specialisation-diversification taxonomy

How do nurses and teachers perform breast self-examination: are they reliable sources of information?

<p>Abstract</p> <p>Background</p> <p>Breast cancer is the most common cause of cancer-related deaths among women worldwide. The aim of the present study was to determine and compare knowledge, behavior and attitudes among female nurses and teachers concerning breast self-examination (BSE).</p> <p>Methods</p> <p>Two-hundred and eighty nine women working in Aydin, Turkey (125 nurses and 164 teachers) were included in the study. The data were collected using a questionnaire designed to measure the knowledge, attitudes and behavior of the groups. Analysis involved percentiles, χ²tests, <it>t </it>tests and factor analysis.</p> <p>Results</p> <p>The knowledge of nurses about BSE was higher than that of teachers (81.5% versus 45.1%; p < 0.001). BSE practice parameters (i.e. age groups, indications, frequency) were similar (p > 0.05), whereas skills in performing self-examination were higher in nurses (p < 0.001). Fear of having breast cancer is the most frequent reason for performing BSE. Among nurses, the reasons for failure to perform BSE were the absence of prominent breast problems (82%) and forgetting (56.4%). The teachers who did not perform BSE said that the reasons were lack of knowledge on how to perform self-examination (68.9%) and absence of problems (54%). Both groups had unacceptable technical errors in the performance of BSE.</p> <p>Conclusion</p> <p>We conclude that nurses and teachers should be supported with information enabling them to accomplish their roles in the community. To improve BSE practice, it is crucial to coordinate continuous and planned education.</p

Sonocatalytic treatment of baker's yeast effluent

Baker's yeast effluent is a major source of pollution with a high organic load and dark colour. It can be treated by using advanced oxidation processes (AOPs). AOPs, such as ultrasonic irradiation, are ambient temperature processes involving the generation of free radicals. We have investigated sonocatalytic treatment of baker's yeast effluent by using ultrasound. TiO2–ZnO composites were used as sonocatalysts to increase the efficiency of the ultrasonic irradiation. The TiO2/ZnO composite was prepared by two different methods. Ultrasonic irradiation or mechanical stirring was used to prepare the TiO2–ZnO composite, and an ultrasonic homogenizer with a 20 kHz frequency was used to treat the baker's yeast effluent. We studied the effects of several parameters, including the molar ratio of TiO2/ZnO, calcination temperature, calcination time and catalyst amount, on the sonocatalytic treatment of the effluent. According to the results, the decolorization rate was 25% when using the composite TiO2/ZnO prepared at a 4:1 molar ratio and treated at 700 °C for 60 min, and the optimum catalyst amount was 0.15 g/l

How do ICT firms in Turkey manage innovation? : diversity in expertise versus diversity in markets

This paper provides a novel taxonomy of firms based on specialization versus diversification in production and markets. Firms may choose to specialize on few production activities or alternatively may build expertise in many activities. There is an accompanying decision when firms sell their products: whether to serve few or many markets. We argue that the location on the specialization-diversification spectrum significantly affects how firms manage innovation. For a sample of 90 innovator ICT firms in Ankara we find that cooperation structure, sources of innovation and funding of R&D display statistically significant different patterns according to the specialization-diversification taxonomy

Performance Enhancement of İnverted Type Organic Solar Cells By Using Eu Doped TiO2 Thin Film

In the present work, europium (Eu) has been used as a dopant element in titanium dioxide (TiO2) crystal structure to enhance the photovoltaic performance of the inverted type organic solar cells fabricated with TiO2 thin film as an electron transport layer. Poly(3-hexylthiophene):phenylC61-butyric acid methyl ester (P3HT: PCBM) blend has been used as an active layer and Eu:TiO2 thin films have been fabricated with different Eu concentrations as 0, 1, 5, 7 and 10% (w/w) by sol-gel method. Effect of Eu doping concentration on the photovoltaic performance of the inverted type solar cells has been investigated. Inverted type organic solar cells using Eu doped TiO2 thin films as electron transport layer has been fabricated as a structure of ITO/Eu:TiO2/P3HT:PCBM/Ag. Power conversion efficiency of the fabricated solar cells increased from 1.16% to 2.47% at 5% Eu doping concentration. Electron transport and hole blocking properties of the TiO2 inter layer has been improved by Eu doping. © 2017 Elsevier B.V.Ahi Evran Üniversitesi: MMF.A3.16.009This research is supported by Ahi Evran University Grant no.: MMF.A3.16.009

Surgical treatment of bronchiectasis: Our 23 years of experience

Background: In this study, we aimed to evaluate the success of surgery and a complete resection for bronchiectasis treatment and to present our 23 years of surgical experience. Methods: Between January 1991 and December 2013, a total of 1,357 patients (667 males, 690 females; mean age 30.5 +/- 14.3 years; range, 3 to 73 years) with the diagnosis of bronchiectasis who underwent pulmonary resection in our clinic were retrospectively analyzed. Demographic and clinical characteristics of the patients, etiologies, symptoms, localizations, surgical procedures, and long-term follow-up results were evaluated. Results: There were 1,394 surgeries, as 37 (2.7\%) patients had bilateral disease. The surgical procedures included lobectomy (n=702, 50.3\%), pneumonectomy (n=183, 13.1\%), segmental resections (n=114, 8.2\%), bilobectomy (n= 83, 6.0\%), and lobectomy + segmentectomy (n=312, 22.4\%). During the postoperative period, 1,269 (93.5\%) patients were followed at a mean duration of 51.6 (range, 1 to 120) months. After surgery, 774 (61\%) patients were asymptomatic, 456 (35.9\%) showed an improvement, and 39 (3.1\%) had no response or deterioration. Conclusion: The surgical treatment plays an important role in the clinical and symptomatic improvement of patients with bronchiectasis. Surgery reduces the morbidity and mortality rates with careful preoperative preparation and appropriately selected cases