Inter And Intra Row Competıtıon Effects On Growth And Yıeld Components Of Sunflower (Helıanthus Annuus L.) Under Raınfed Condıtıons

Sunflower (Helianthus annuus L.) is an important oilseed plant with high adaptability to semi-arid conditions for reasonable vegetable oil production. The aim of this study was to determine the agronomic responses of Bosfora hybrid sunflower cultivar sown inter-row (50 and 70 cm) & intra-row (20, 25, 30, 35 and 40 cm) spacing in rainfed conditions. The field experiment was laid out on split plots in randomized blocks with three replications for two years (2016 and 2017). Inter row spacings were placed in the main plots and intra row spacings were placed in the subplots. Narrower inter-row (50 cm) and intra-row (20 and 25 cm) plant spacing caused taller plant development but decreased stem thickness, head diameter, thousand-seed weight, number of seeds in a head, dehulled seed ratio, seed weight of per plant, crude oil ratio, day to flowering and maturity. The highest yield (2759.9 kg ha(-1)) was obtained in 50x20 cm spacing while the lowest (1963.8 kg ha(-1)) yield was obtained in 70x20 cm spacing, more likely, due to the increase in the number of plants per unit area. The crude oil ratio was decreased by narrower spacing. However, oil yield was increased with seed yield (kg ha(-1)) and reached the highest amounts (1221.9 and 844.2 kg ha(-1)) in narrow row spacing, attributed to the plant population per unit area. To conclude that the highest seed yield was obtained from narrower (50x20 cm and 50x25 cm) seeding rates in rainy year (2016), while the highest yields were obtained from lowest plant population (70 x 20 and 70 x 25 cm) rates in dry year (2017)

Bio-Inspired Filter Banks for SSVEP-based Brain-Computer Interfaces

Brain-computer interfaces (BCI) have the potential to play a vital role in future healthcare technologies by providing an alternative way of communication and control. More specifically, steady-state visual evoked potential (SSVEP) based BCIs have the advantage of higher accuracy and higher information transfer rate (ITR). In order to fully exploit the capabilities of such devices, it is necessary to understand the features of SSVEP and design the system considering its biological characteristics. This paper introduces bio-inspired filter banks (BIFB) for a novel SSVEP frequency detection method. It is known that SSVEP response to a flickering visual stimulus is frequency selective and gets weaker as the frequency of the stimuli increases. In the proposed approach, the gain and bandwidth of the filters are designed and tuned based on these characteristics while also incorporating harmonic SSVEP responses. This method not only improves the accuracy but also increases the available number of commands by allowing the use of stimuli frequencies elicit weak SSVEP responses. The BIFB method achieved reliable performance when tested on datasets available online and compared with two well-known SSVEP frequency detection methods, power spectral density analysis (PSDA) and canonical correlation analysis (CCA). The results show the potential of bio-inspired design which will be extended to include further SSVEP characteristic (e.g. time-domain waveform) for future SSVEP based BCIs.Comment: 2016 IEEE International Conference on Biomedical and Health Informatics (BHI

Neutralino Dark Matter in the Left-Right Supersymmetric Model

We study the neutralino sector of the left-right supersymmetric model. In addition to the possibilities available in the minimal supersymmetric model, the neutralino states can be superpartners of the U(1)_{B-L} gauge boson, the neutral SU(2)_R neutral gauge boson, or of the Higgs triplets. We analyze neutralino masses and determine the parameter regions for which the lightest neutralino can be one of the new pure states. We then calculate the relic density of the dark matter for each of these states and impose the constraints coming from the rho parameter, the anomalous magnetic moment of the muon, b -> s gamma, as well as general supersymmetric mass bounds. The lightest neutralino can be the bino, or the right-wino, or the neutral triplet higgsino, all of which have different couplings to the standard model particles from the usual neutralinos. A light bino satisfies all the experimental constraints and would be the preferred dark matter candidate for light supersymmetric scalar masses, while the right-wino would be favored by intermediate supersymmetric mass scales. The neutral triplet Higgs fermion satisfies the experimental bounds only in a small region of the parameter space, for intermediate to heavy supersymmetric scalar masses.Comment: 31 pages, 8 figures, one table and references added, to be published in Phys. Rev.

Pediatric paraspinal penetrating sewing needle

Pediatric spinal injuries are very rare conditions and account for 1%-10% of all spinal injuries Domestic accidents, such as falling and bumping, are frequent events during childhood.In this study, a 1-year-old boy who was under treatment due to a penetrating trauma at the posterior thoracolumbar intersection is presented. The patient was referred to our clinic after a needle became impaled into his back due to an accident that occurred at home. The patient’s neurologic assessment was normal. A radiologic study of the patient showed the presence of a metallic foreign object, extending into the paravertebral muscle on the left side of the T12-L1 intersection. The needle was removed promptly after an emergent surgical procedure. No any complications were present during the follow-up visit after 1 month. Emergent surgical intervention is necessary in paraspinal and spinal penetrating traumas. © 2015, Yuzuncu Yil Universitesi Tip Fakultesi, Universitas Indonesia. All rights reserved

Oral Exam System at Teacher Appointments in Turkey

Oral Exam system is applied all over the world, is recently applied in Turkey. After teacher candidates pass the PESE (General Knowledge, General Skills, Educational Sciences, and TPFK), they receive Oral Exam, and they are appointed with the points they receive from this stage or they are considered as unsuccessful. In other words, while Oral Exams are used as the complementary elements of written and similar other exams in the world, they are used as the sole determinants of appointing teachers in Turkey, which is beyond being complementary. As a matter of fact, in countries where Oral Exams are applied, it is observed that this system is used sometimes for preferential purposes, and the influence of Oral Exams on appointment point is kept low. Another reason for the criticisms of the educational syndicates that are active in Turkey on Oral Exam application is the suspicion of its activating the “preferential treatment” mechanism, because evaluations have subjectivity in them; and the evaluations of the members of the commission about the answers of the candidates are not based on adequate and concrete dat

Mermer tozu ve uçucu külün çimento harçlarının mekanik özelliklerine etkisi

Marble powder and fly ash have a significant influence on building technology. Fly ash and marble powder allow the production of cement-based composites with different properties. The use of marble powder and fly ash in mortars was researched and the findings of the study to understand the effect of these materials on mortar were presented. The fine aggregate was substituted with marble powder, fly ash, and both marble powder and fly ash in a total of 15 mortar mix produced with CEM I 42.5 R cement. 7 and 28 days bending and compression tests were applied to the samples produced with a constant (0.58) water/cement ratio. The microstructure of the samples was investigated by XRD technique. In the substitution of standard sand with marble powder, it was discovered that a 5% substitution increased flexural and compressive strength. Similarly, 20% fly ash substitution in mortars resulted in maximum mechanical properties, with a compressive strength of 49.5 MPa. It was also determined that using 15% marble powder and 15% fly ash increased the mechanical properties of mortars. It has been concluded that fly ash is a very effective additive in mortar thanks to its pozzolanic properties, and the use of fly ash and marble dust in cement-based composites is an important application to protect the environment.Mermer tozu ve uçucu kül, yapı teknolojisi üzerinde önemli bir etkiye sahiptir. Uçucu kül ve mermer tozu, farklı özelliklerde çimento esaslı kompozitlerin üretilmesine olanak sağlar. Bu çalışmada, harçlarda mermer tozu ve uçucu kül kullanımı incelenmiş ve bu malzemelerin harcın mukavemet özellikleri üzerindeki etkisini belirleyen çalışmanın sonuçları sunulmuştur. Çalışmada CEM I 42.5 R çimentosu ile ince agreganın mermer tozu, uçucu kül ve uçucu kül ile birlikte mermer tozu ikame edildiği toplam 15 harç karışımı üretilmiştir. Sabit (0.58) su/çimento oranıyla üretilen numunelere 7 ve 28 günlük eğilme ve basınç testleri uygulanmıştır. Numunelerin mikro yapısı XRD tekniği ile incelenmiştir. Mermer tozunun standart kum ile %5 oranında ikame edilmesi basınç ve eğilme dayanımını arttırdığı belirlenmiştir. Ayrıca, %20 uçucu kül ikamesi, harçlarda 49.5 MPa basınç mukavemeti elde edilerek en yüksek mekanik özellikler bulunmuştur. Benzer şekilde, %15 mermer tozu ve %15 uçucu kül kullanımının harçların mekanik özelliklerini iyileştirdiği tespit edilmiştir. Uçucu külün puzolanik özelliklerinin sayesinde harçta oldukça etkili bir katkı malzemesi olduğu ve uçucu kül ile mermer tozunun çimento esaslı kompozitlerde kullanımı çevreyi korumak için önemli uygulama olduğu sonucuna varılmıştır

The relationship of cutting force with hole quality in drilling process of AISI H13 steel

The harmony of the drilling machine-cutting tool-work piece is very important for producing the machine part with the ideal dimensions. For this purpose in this study, the effect of cutting forces on hole quality (surface roughness, diameter deviation and circular deviation) was investigated by 14 mm diameter uncoated and (AlCrN monolayer) coated carbide drills for drilling AISI H13 hot work tool steel on vertical machining center. Four different cutting speeds (60, 75, 90 and 108 m / min) and three different feed rates (0.15, 0.20 and 0.25 mm / rev) were used in the experiments. Cutting forces have been found to be effective in improving hole quality. Better hole quality has obtained with coated drills than uncoated drills in experiments. It has been observed that coated drills have the effect of improving the hole quality due to the operation with less cutting force and better chip evacuation