1,381 research outputs found
Dr. Yucel Yanikdag – Faculty Author Interview
No full textDr. Yucel Yanikdag, Associate Professor of History discusses his new book, Healing the Nation: Prisoners of War, Medicine and Nationalism in Turkey, 1914-1939, published recently by Edinburgh University Press. In this book, he explores how Ottoman prisoners of war and military doctors of the First World War discursively constructed their nation as a community, and at the same time attempted to exclude certain groups from that nation. Yanikdag aims to broaden the discussion of nationalism to explore how ideological and biological factors influenced each other
Detection of epileptic indicators on clinical subbands of EEG
No full textSymptoms of epilepsy, which is characterized by abnormal brain electrical activity, can be observed on electroencephalography (EEG) signal. This paper employs models of chaotic measures on standard clinical subbands of EEG and aims to help detection of epilepsy seizures and diagnosis of epileptic indicators in interictal signals. copyright by EURASIP
An audio watermarking algorithm via zero assigned filter banks
No full textIn order to identify the owner and distributor of digital data, a watermarking scheme for audio files is proposed in frequency domain. The scheme satisfies the imperceptibility and persistence requirements and is robust against additive noise. It consists of a few stages of wavelet decomposition of several frames of the original signal using special zero assigned filter banks. By assigning zeros to filters on the high frequency portion of the spectrum, filter banks with frequency selective response is obtained. Text information is then inserted in the wavelet-decomposed and compressed signal. Several robustness tests are performed on male voice, female voice, and music files
A two-step four-component queuing cascade involving a Heck coupling, pi-allylpalladium trapping and Diels-Alder reaction
No full textPalladium-catalyzed cross-coupling of bicyclopropylidene (1) with iodoethene (11) in the presence of a secondary amine 12 provides allylidenecyclopropanes 13 which undergo immediate Diels-Alder reactions upon addition of dienophiles 14-18 to provide 8- (1'-aminoethyl)-substituted spiro[2.5]oct-7-ene derivatives 23a-26a in 29-66% yield. The same one-pot, two-step queuing cascade can be carried out with other iodoalkenes including cyclic ones and with cyclic dienophiles such as N-arylmaleinamides 19-22 and N-phenyl-triazolinedione 37 to furnish highly substituted spiro[2.5]oct-4-enes and spirocyclopropanated heterobicycles 47a-49a, 41a-46a (17-50%). Spirocyclopropanated heterobicycles such as 55, 56 (25 and 38% yield, respectively) can also be obtained by an inter-intra-intraintermolecular version of this queuing cascade involving 1-hydroxyethyl- and 1-aminoethyl -substituted iodoethenes 53, 54. (c) 2005 Elsevier Ltd. All rights reserved
Watermarking via zero assigned filter banks
Get PDFIn order to identify the owner and distributor of digital data, a watermarking scheme in frequency domain for multimedia files is proposed. The scheme satisfies the imperceptibility and persistence requirements and it is robust against additive noise. It consists of a few stages of wavelet decomposition of several subblocks of the original signal using special zero assigned filter banks. By assigning zeros to filters on the high frequency portion of the spectrum, filter banks with frequency selective response are obtained. The information is then inserted in the wavelet-decomposed and compressed signal. Several robustness tests are performed on male voice, female voice, and music files, color and gray level images. The algorithm is tested under white Gaussian noise and against JPEG compression and it is observed to be robust even when exposed to high levels of corruption
Characterization and comparison of mine wastes in Can Coal Basin, northwest Turkey: a case study
Get PDFThe Can Coal Basin is a major coal-producing site in northwest Turkey that has faced acid mine drainage problems since the 1980s. This study characterized and compared mine wastes from the Etili and Comakli open-pit coal mines in the Can Coal Basin physically, mineralogically, and geochemically for acid mine drainage potential and metal(loid) mobility. Mineralogical analysis determined pyrite to be the major sulfide mineral in the Etili and Comakli coal and mine wastes, while dolomite and calcite were abundant in the mine wastes from the Comakli site. Concentrations of Al, As, Mn, and Pb in these mine wastes are higher than in Turkish and world coals. The enrichment factor showed moderate enrichment of Pb and significant enrichment of As in the Etili and Comakli mine wastes, respectively. Static tests indicated acid generation potential in all Etili and some Comakli mine wastes. The modified synthetic precipitation leaching procedure revealed that greater concentrations of Al, Fe, Mn, Ni, Pb, and SO42- were released from pyrite-rich mine wastes. Physical, mineralogical, and geochemical factors affecting acid mine drainage were highly variable within and between sites. Increasing concern over significant environmental health effects of low-pH, metal(loid)-polluted mine wastes necessitates remediation of the mine sites.Scientific Research Projects Coordination Unit of Canakkale Onsekiz Mart University [FBA-2016-759]This research was partly supported by the Scientific Research Projects Coordination Unit of Canakkale Onsekiz Mart University under FBA-2016-759 numbered project. The author thanks to Canakkale Onsekiz Mart University Science and Technology Application and Research Center for SEM-EDX analysis. The author is grateful to Assoc. Prof. Mehmet Ali Yucel for his help during field studies, Dr. Burcu Ileri for her assistance in laboratory work and Dr. Mehmet Karadeniz for his constructive comments. Furthermore, the author special thanks to the four anonymous reviewers for their valuable suggestions
Examining the role of interoceptive abilities in blood pressure-related hypoalgesia
No full textIt is well established that pain perception is reduced during spontaneously occurring and
experimentally induced episodes of high blood pressure (BP), and this is a clinically relevant
phenomenon that interferes with the early detection of the chest pain that characterizes
silent myocardial infarction. Two distinct pilot studies were conducted under stressful and
non-stressful environmental conditions, with the overall aim of investigating whether
interoceptive abilities, assessed via self-report measures and the heartbeat counting task,
2024 APS Abstract System 08/09/23, 09:21
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may modulate this phenomenon, known as BP-related hypoalgesia. The first study (n = 27
normotensive participants) showed a significant moderation effect of interoception (b =
-3.94, SE = 1.81, t = -2.18, p = 0.04, 95% CI[-7.69, -0.19]), according to which individuals
characterized by low-to-moderate accuracy in perceiving their own heartbeat exhibited a
positive correlation between BP levels and pain thresholds, while this pattern was not
observed in participants with high interoceptive abilities. The second study expanded upon
these findings by examining a sample of unmedicated borderline hypertensive (n = 20) and
age and sex-matched normotensive individuals (n = 20) and added a stress-inducing virtual
reality paradigm which yielded a significant Group by Condition interaction (F = 12.02, p =
.001). Borderline hypertensives and controls had opposite reactions to the stressor: in the
first group pain threshold increased, in the second it decreased. Notably, pain threshold was
significantly associated with (self-reported and behavioural) interoceptive abilities only in
normotensives (ps < .03). If replicated, current results point to the possibility to reduce the
additional cardiovascular risk posed by BP-related hypoalgesia by developing ad hoc
interventions aimed at enhancing interoceptive awareness in hypertensive individuals
Melt treatment of Al–Si foundry alloys with B and Sr additions
No full textIndividual Sr and B additions to Al-Si alloy melts fail to provide either grain refinement or modification. Sr and B must be used together to achieve both features for high-quality sound castings. Sr and B solutes in addition to insoluble SrB6 particles are introduced to the melt when Sr and B are used together. SrB6 particles and B solutes, which form the AlB2 particles later during solidification, are believed to be responsible for the marked improvement in grain refinement in the co-addition practice. Sr atoms in liquid solution, on the other hand, are adsorbed on the surface of the Si plates leading to twinning once the melt cools to the eutectic solidification temperature. A series of experiments have shown that a very fine grained matrix and a fine fibrous eutectic are readily obtained when the AlSi7Mg0.3 alloy is inoculated with 100 ppm B and 150 ppm Sr
Lys-specific gingipain (Kgp) of P. gingivalis promotes viral infection by disabling the interferon pathway - research data
No full textDatasets represent the data generated for the publication: Dobosz E, Golda A, Kanoza M, Kowalczuk W, Potempa B, Potempa J, Gasiorek A, Madeja N, Budziaszek J, Mizgalska D, Yucel-Lindberg T, Koziel J. Lys-specific gingipain (Kgp) of P. gingivalis promotes viral infection by disabling the interferon pathway. mBio 0:e00298-25.
https://doi.org/10.1128/mbio.00298-2
Automated discrimination of psychotropic drugs in mice via computer vision-based analysis
No full textWe developed an inexpensive computer vision-based method utilizing an algorithm which differentiates drug-induced behavioral alterations. The mice were observed in an open-field arena and their activity was recorded for 100 min. For each animal the first 50 min of observation were regarded as the drug-free period. Each animal was exposed to only one drug and they were injected (i.p.) with either amphetamine or cocaine as the stimulant drugs or morphine or diazepam as the inhibitory agents. The software divided the arena into virtual grids and calculated the number of visits (sojourn counts) to the grids and instantaneous speeds within these grids by analyzing video data. These spatial distributions of sojourn counts and instantaneous speeds were used to construct feature vectors which were fed to the classifier algorithms for the final step of matching the animals and the drugs. The software decided which of the animals were drug-treated at a rate of 96%. The algorithm achieved 92% accuracy in sorting the data according to the increased or decreased activity and then determined which drug was delivered. The method differentiated the type of psychostimulant or inhibitory drugs with a success ratio of 70% and 80%, respectively. This method provides a new way to automatically evaluate and classify drug-induced behaviors in mice. Crown Copyright © 2009
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