9,163 research outputs found
The EPR study of Mn2+ ion doped DADT single crystal produced under high pressure and temperature
No full textceylan, umit/0000-0002-1461-9889WOS: 000365367100085PubMed: 26137878An EPR study on Cu2+ and VO2+ doped di ammonium D-tartrate single crystals has been reported in previous papers, but the same host did not accept Mn2+ ion at the same reaction conditions in previous trials. In this study EPR study of Mn2+ ion doped di ammonium D tartrate single crystal, (DADT) [(NH4)(2)C4H4O6], produced in a reactor under high pressure and high temperature. The electronic transitions were determined by the optical absorption spectrum. Hyperfine splitting and g values of the Mn2+ ion forming a complex in the lattice were measured from experimental spectra and spin spin dipolar splitting parameters D and E were found by the spectrum simulation techniques. (C) 2015 Elsevier B.V. All rights reserved.BAP, Ondokuz Mayis University (Samsun)Ondokuz Mayis University [PYO. FEN. 1904.09.017, FEN 1901-10.001]This work was financially supported by the BAP, Ondokuz Mayis University (Samsun) (Project numbers: PYO. FEN. 1904.09.017 and FEN 1901-10.001)
Quo vadis Turkey?
No full text[author of the report: Indira Ceylan]Electronic ed: Istanbul ; Bonn : FES, 2011. - Title only available onlin
Ceylan, Nuri Bilge
No full textA biographical profile of the Turkish film director Nuri Bilge Ceylan also containing his filmography
Ceylan, Nuri Bilge
No full textA biographical profile of the Turkish film director Nuri Bilge Ceylan also containing his filmography
A Variation of the Cords of the Brachial Plexus on the Right and a Communication between the Musculocutaneous and Median Nerves on the Left Upper Limb: A Unique Case
No full textDuring routine anatomical dissection of the upper extremity of a 64-year-old cadaver for educational purposes, we observed variations in the brachial plexus on each side. On the right an anomaly of cord formation was present and on the left there was a communication between the musculocutaneous nerve (MCN) and median nerve (MN). On the right side the brachial plexus showed two trunks, superior (C5 and C6) and inferior (C7, C8, and T1); the middle trunk was absent. The superior trunk bifurcated into anterior and posterior divisions, the anterior division continued as the lateral cord forming the MCN. The posterior division gave off the subscapular branch. The inferior trunk trifurcated into radial, median, and ulnar nerves. The radial nerve gave off the axillary and thoracodorsal nerves. The ulnar nerve gave off the median cutaneous nerves of the arm and forearm. The median nerve received a small ascending branch from the MCN. On the right side, there was a communicating branch from the MCN to the MN in the lower third of the arm region. This communicating branch also gave rise to a muscular branch to the brachialis muscle and the lateral cutaneous nerve of forearm. No additional heads of the biceps brachii muscle were observed in either upper limb. Knowledge of the variations of the brachial plexus in humans can be valuable for operations of the shoulder joint and its repair for providing an effective block or treatment for anesthetists and also for explaining otherwise incomprehensible clinical signs for neurologists
Computational Shape Understanding for 3D Reconstruction and Modeling
No full textThe physical and the digital world are becoming tightly connected as we see an increase in thevariety of 2D and 3D acquisition devices, e.g., smartphones, digital camera, scanners, commercialdepth sensors. The recent advances in the acquisition technologies facilitate the data captureprocess and make it accessible for casual users. This tremendous increase in the digital contentcomes with many application opportunities including medical applications, industrial simulations,documentation of cultural artifacts, visual effects etc.The success of these digital applications depends on two fundamental tasks. On the one hand,our goal is to obtain an accurate and high-quality digital representation of the physical world. Onthe other hand, performing high-level shape analysis, e.g. structure discovery in the underlyingcontent, is crucial. Both of these tasks are extremely challenging due to the large amount ofavailable digital content and the varying data quality of this content including noisy and partialdata measurements. Nonetheless, there exists a tight coupling between these two tasks: accuratelow-level data measurement makes it easier to perform shape analysis, whereas use of suitablesemantic priors provides opportunities to increase the accuracy of the digital data.In this dissertation, we investigate the benefits of tackling the low-level data measurementand high-level shape analysis tasks in a coupled manner for 3D reconstruction and modelingpurposes. We specifically focus on image-based reconstruction of urban areas where we exploitthe abundance of symmetry as the principal shape analysis tool. Use of symmetry and repetitionsare reinforced in architecture due to economic, functional, and aesthetic considerations. Weutilize these priors to simultaneously provide non-local coupling between geometric computationsand extract semantic information in urban data sets.Concurrent to the advances in 3D geometry acquisition and analysis, we are experiencing arevolution in digital manufacturing. With the advent of accessible 3D fabrication methods suchas 3D printing and laser cutting, we see a cyclic pipeline linking the physical and the digitalworlds. While we strive to create accurate digital replicas of real-world objects on one hand,there is a growing user-base in demand of manufacturing the existing content on the other hand.Thus, in the last part of this dissertation, we extend our shape understanding tools to the problemof designing and fabricating functional models. Each manufacturing device comes withtechnology-specific limitations and thus imposes various constraints on the digital models thatcan be fabricated. We demonstrate that, a good level of shape understanding is necessary to optimize the digital content for fabrication.EG Graphics Dissertation Onlin
Reinforcement of the distribution grids to improve the hosting capacity of distributed generation: Multi-objective framework
No full text© 2023 The Author(s)Excessive penetration of renewable energy resources into the distribution grid without additional preventive measures has led to several operational problems. However, most strategies developed to accommodate more renewable energy units suffered from other operational problems. Therefore, further efforts are needed to address the other key vulnerabilities of the grid in addition to maximizing the hosting capacity. In this regard, this study is devoted to a new multi-objective formulation to maximize the hosting capacity and minimize the total energy losses while satisfying the operational constraints and maximizing the energy transferred to off-peak hours. The Multi-Objective Advanced Gray Wolf Optimization (MOAGWO) algorithm is used as a solution tool. The proposed formulation and solution algorithm are tested on IEEE-33-bus and 69-bus medium voltage test systems. The impacts of energy storage systems, voltage regulators, and static var compensators on the hosting capacity and the objective functions are identified using several scenarios. The results showed that the optimal device type and locations depend on the level of DG penetration. Finally, a comparison according to two popular multi-objective performance indices showed that the quality of the Pareto front distribution obtained by MOAGWO was better than the ones obtained with the two other popular heuristic methods
A Ceylan. Une visite aux ruines d'Anuradhapura
No full textFerrière Ch. A Ceylan. Une visite aux ruines d'Anuradhapura. In: Le Globe. Revue genevoise de géographie, tome 55, 1916. pp. 61-71
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