36 research outputs found

    Two solar eclipses observations in Turkey

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    In thispap er, the changesin the ionosphere over Turkey due to two solar eclipses are reported. TEC on the eclipse day (26 April 1976) and the intensity of an HF radio wave during itspropagation over 567 km between Ankara and Elazıˇg on the eclipse day (11 August 1999) exhibited a very marked decrease

    Lunapark deficiency leads to an autosomal recessive neurodevelopmental phenotype with a degenerative course, epilepsy and distinct brain anomalies

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    LNPK encodes a conserved membrane protein that stabilizes the junctions of the tubular endoplasmic reticulum network playing crucial roles in diverse biological functions. Recently, homozygous variants in LNPK were shown to cause a neurodevelopmental disorder (OMIM#618090) in four patients displaying developmental delay, epilepsy and nonspecific brain malformations including corpus callosum hypoplasia and variable impairment of cerebellum. We sought to delineate the molecular and phenotypic spectrum of LNPK-related disorder. Exome or genome sequencing was carried out in 11 families. Thorough clinical and neuroradiological evaluation was performed for all the affected individuals, including review of previously reported patients. We identified 12 distinct homozygous loss-of-function variants in 16 individuals presenting with moderate to profound developmental delay, cognitive impairment, regression, refractory epilepsy and a recognizable neuroimaging pattern consisting of corpus callosum hypoplasia and signal alterations of the forceps minor ('ear-of-the-lynx' sign), variably associated with substantia nigra signal alterations, mild brain atrophy, short midbrain and cerebellar hypoplasia/atrophy. In summary, we define the core phenotype of LNPK-related disorder and expand the list of neurological disorders presenting with the 'ear-of-the-lynx' sign suggesting a possible common underlying mechanism related to endoplasmic reticulum-phagy dysfunction

    Color matching in two color melange fiber blends by stearns - Noechel model

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    Melange color is a color effect obtained by mixing of fibers in different colors before the blend. One of the biggest problems encountered in the work of mélange colors in textile is that, not accurate estimation of fiber colors provides desired color. In this study estimating the mélange color pre-production, yellow, red and blue colors used in the viscose and polyester fibers. These fibers in different ratios and two colors mixed and 165 mélange-colored bands were obtained. Color values of these bands, measured in the spectrophotometer were expressed in CIELab 1976 (D65 illuminant and 10o standard observer) unit. Stearns - Noechel model has been the basis for color forecasting. To calculate the model M, in the coefficient, a new approach was developed. A different M coefficient was calculated for all wavelengths in each mix, 400-700 nm (10nm intervals) range. The color calculations are performed, using the M coefficients. The average color difference between the measured color values and calculated color values was found as 1.15 CIELab units. This result suggests that in the fiber blend estimating the colors of the Stearns - Noechel model might be a sufficient result

    Spectrophotometric colour matching in melange fibre blends

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    Colour effect is obtained from mixing different coloured fibres before the blend. In the production of mélange colored textile materials, the incorrect prediction of fibre colors, which will provide the mélange colour desired, constitute a major problem for textile businesses. In this study, an attempt was made at estimating the mix of fibre colours to obtain the mélange colour desired before production. For this purpose, polyester and viscose fibres were used in yellow, red and blue colours. These fibres were obtained in different ratios, three colour mixes and 720 mélange coloured bands. The colour values of these bands measured by a spectrophotometer were expressed in CIELab 1976 units. The Stearns - Noechel model was the basis for colour forecasting. A new approach has been developed for calculating coefficient M in the model. This approach results in each mixture, and a different coefficient M was calculated for all the wavelengths in the range 400 - 700 nm. Colour calculations were made using the M coefficients. The average colour difference between the colour values measured and those calculated were found to be 0.95 CIELab units. This result suggests that in fibre blends, estimating the colour of the Stearns - Noechel model might be a sufficient result

    The prediction of the colour values in the polyester/viscose fibre blends by a newly developed algorithm [Polyester/viskon elyaf karişimlarinda renk degerlerinin yeni bir algoritma geliştirilerek tahmin edilmesi]

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    Fibres in different colours are mixed prior to blending in order to obtain different dyeing effect (melange colour). One of the biggest problems encountered in these mixtures, is the difficulty of estimation of exact ratio of fibre blend to obtain desired mélange colours. In this study, to predict the fibre blend colour, 84 pieces of mélange colour band sample were obtained by blending of different proportion black and white Viscose and Polyester fibres. Measured colour values of these blends were expressed in CIELab 1976 units (D65 illuminant and 10o standard observer). Stearns-Noechel model in a tristimulus colour matching algorithm was based on for colour prediction. M values in this model (the empirical constant in the Stearns-Noechel model), were obtained by developing a new method through the linear correlations between various blending ratios and Stearns-Noechel function. Average colour difference between measured colour values and calculated colour values was found to be 0.98 CIELab units. This result shows that Stearns-Noechel model can be used in colour matching in fibre blends

    A longitudinal study on the effect of entrepreneurship courses taught at the vocational colleges in Turkey on students' entrepreneurial tendency

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    In the current international context, it is important to maintain vocational and technical education by providing entrepreneurship qualities within the mission of raising median labor force, which is undertaken by vocational colleges. The aim of this study is to make a longitudinal assessment of the effect of entrepreneurship courses taught at vocational colleges on entrepreneurship tendency. According to the study findings, having entrepreneurship courses at vocational colleges does not allow students to gain sufficient entrepreneurship qualifications. However, students feel inspired to establish their own business and gain a consciousness of the fact that they should not leave their lives at the mercy of external factors. In order to ensure that students acquire entrepreneurship qualities through entrepreneurship courses and prefer entrepreneurship, it is necessary for this course to be taught as an applied course: students' application performance must be included in the course assessment criteria; students must be given supervision support and a sense of making money on their own; and structural problems must be resolved. © 2019 Universitatea Alexandru Ioan Cuza

    Further Guaianolides from Chrysophthalmum montanum

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    Reliability and validity of the Turkish version of the intermittent self-catheterization questionnaire in patients with spinal cord injury

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    WOS: 000522017800001PubMed: 32222882Purpose To evaluate the validity and reliability of the Turkish version of the Intermittent Self-Catheterization Questionnaire (ISC-Q) in patients with spinal cord injury (SCI). This questionnaire evaluates four problems related to the use of ISC, which are ease of use, convenience, discreetness and psychological well-being. Methods A total of 60 SCI (40 males, 20 females) patients were included in the study. Reliability was assessed using Cronbach's alpha and intraclass correlation coefficient (ICC) methods, and the validity was assessed using the correlations between the ISC-Q scores and the scores for the King's health questionnaire (KHQ). Results the mean age of the study sample was 37.07 +/- 12.6 years. of patients, 56.6% were completely injured. Both the internal consistency (Cronbach's alpha coefficient 0.899-0.947) and the test-retest reliability (intraclass correlation coefficient 0.899-0.947) of the ISC-Q were found to be high in patients with SCI. in the validity analysis, significant positive correlation was identified between convenience, psychological well-being, and total score domains and most subgroups of the KHQ, and also significant negative correlation was found between the discreetness of the domain and the impact of urinary incontinence, role limitation, physical limitation, social limitation and emotional status domains of the KHQ. Conclusion the Turkish version of the ISC-Q can be considered a reliable and valid tool for the evaluation of quality of life related to catheterization in patients with SCI
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