Photonuclear reactions with Zinc: A case for clinical linacs

The use of bremsstrahlung photons produced by a linac to induce photonuclear reactions is wide spread. However, using a clinical linac to produce the photons is a new concept. We aimed to induce photonuclear reactions on zinc isotopes and measure the subsequent transition energies and half-lives. For this purpose, a bremsstrahlung photon beam of 18 MeV endpoint energy produced by the Philips SLI-25 linac has been used. The subsequent decay has been measured with a well-shielded single HPGe detector. The results obtained for transition energies are in good agreement with the literature data and in many cases surpass these in accuracy. For the half-lives, we are in agreement with the literature data, but do not achieve their precision. The obtained accuracy for the transition energies show what is achievable in an experiment such as ours. We demonstrate the usefulness and benefits of employing clinical linacs for nuclear physics experiments

The Confidence Database

Understanding how people rate their confidence is critical for the characterization of a wide range of perceptual, memory, motor and cognitive processes. To enable the continued exploration of these processes, we created a large database of confidence studies spanning a broad set of paradigms, participant populations and fields of study. The data from each study are structured in a common, easy-to-use format that can be easily imported and analysed using multiple software packages. Each dataset is accompanied by an explanation regarding the nature of the collected data. At the time of publication, the Confidence Database (which is available at https://osf.io/s46pr/) contained 145 datasets with data from more than 8,700 participants and almost 4 million trials. The database will remain open for new submissions indefinitely and is expected to continue to grow. Here we show the usefulness of this large collection of datasets in four different analyses that provide precise estimations of several foundational confidence-related effects

Physico-chemical parameters and acceptability and of spleentreated beef patties

Iron deficiency is one of the world's most common disorders and it occurs when the amount of iron available is insufficient to meet an individual's needs. Spleen is known as a food product rich in iron content, and is a cheap offal. Therefore, consumption of spleen, both directly and indirectly, and especially for the treatment of anemia (iron deficiency) disorder is advised by the medical profession. However, consumption of cooked spleen is unacceptable to many people, due to its bloody structure. In this study, the effect of adding spleen at 0, 5, 10 or 15% to beef patties was studied and physico-chemical (pH, color and iron content) and sensory changes (color, odor, chewiness, flavor and overall acceptability) in the patties were investigated. Along with incremental increases of spleen content in beef patties, pH and iron content were increased, lightness L∗ and redness a∗ values were decreased, but yellowness b∗ values were not significantly different between the patties with added spleen (P>0.05). In terms of sensory analysis, panelists generally appreciated the patties with 10% spleen more than the other spleen levels. © Published under licence by IOP Publishing Ltd

Ultra-fast curve fitting for pulses on FPGA

Due to copyright restrictions, the access to the full text of this article is only available via subscription.Bu çalışmada anlatılan donanım 1.5 GHz Analog-Sayısal- Çevirici’den gelen darbe işaret dizisini işleyebilmekte ve darbe işaretlerini genlik, yükselme/düşme süresi ve varış zamanı parametreleriyle özetleyebilmektedir. Söz konusu donanım arka arkaya gelen sıfır ölü-süreli darbe işaretlerini işleyebilmektedir. Darbeler 9 örnek kadar kısa olabilmektedir. Bu şekildeki darbe işaretleri (ve hatta birçok kanallı olanları) parçacıkların hızlandırılıp, çarpıştırılıp ve algılandıkları yüksek enerji fizik deneylerinde bulunmaktadır. Benzer fiziksel kurulumlar nükleer tıp imgelemede, özellikle Pozitron Salımı Tomografisi’nde de mevcuttur. Donanım gerçeklemesini Sahada Programlanabilir Kapı Dizileri (FPGA) üzerinde yaptık. FPGA’lar yüksek düzeyde paralellik ve bunun sonucu yüksek veri işleme gücü sunmaktadırlar. Bu bildiride, üst seviye mimari, ara yapı detayları, tasarım süreci ve gerçekleme detayları sunulmaktadır. FPGA tasarımımız sayesinde ilgili uygulamalarda alan, güç, devreye alınma zamanı ve operasyonel maliyet tasarrufu sağlamak mümkündür.TÜBİTA

The Clinical Features and Outcomes of Turkish Patients with Igg4-Related Disease: A Single-Center Experience

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