452 research outputs found

    Foreign language test for people with disabilities: basic requirements and specifics of development

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    The article describes the specifics of developing a foreign language test for people with disabilities. It is obvious that such tests have differences in organization and content compared to tests for ordinary students. They have structural, content, functional flexibility and variability depending on the type of violation. The article also notes the importance of taking into account discursive characteristics for determining test situations and selecting language, speech, and communication material while creating each specific test. It is revealed that testers and testologists should have the inclusive competence to develop test materials and conduct the exam.   Such inclusive features should be taken into account while creating materials for testing in a foreign language for people with disabilities. To prove that consideration of these features is necessary, an experiment was conducted in which 15 students with partial and complete vision loss who plan to take a test for the level of foreign language proficiency participated. The students were from different countries: Syria, Egypt, and China. The analysis of respondents ' responses showed that the factors identified in the article are important and should be taken into account in the process of preparing test materials. The results obtained can be used by creators of test materials for people with disabilities, scientists who are engaged in related research in this area

    Experimental study of intrinsic multiple Andreev reflections effect in GdO(F)FeAs superconductor array junctions

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    We report the first observation of the intrinsic multiple Andreev reflections effect (IMARE) in S-n-S-...-S-arrays (S = superconductor, n = normal metal) formed by "break-junction" technique in GdO(F)FeAs superconductor (Tc = 48 - 53 K). We show that superconducting gap peculiarities at dI/dV-spectra sharpen dramatically in the arrays as compared with that in the single-contact spectra; this enables to improve significantly accuracy of the bulk superconducting parameters determination. Using IMARE, we determined the large and the small gap values \Delta_L = 11 +- 1.1 meV and \Delta_S = 2.6 +- 0.4 meV. The BCS-ratio 2\Delta_L/kTc^{local} = 5.0 - 5.9 > 3.52 (Tc^{local} is the contact area critical temperature) evidences for a strong electron-boson coupling. The results obtained agree well with our previous data by Andreev spectroscopy for single SnS-contacts.Comment: 6 pages, 6 figure

    The impact of poor nutrition of women on the formation of obstetric complications

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    The purpose of the study is to compare and record important trends in the eating habits of women of reproductive age (19-29 years), as well as to determine the risk of diseases directly related to nutrition.Цель исследования – сравнить и зафиксировать важные тенденции в пищевых привычках женщин репродуктивного возраста (19-29 лет), а также определить риск заболеваний, непосредственно связанных с питанием

    The interplay of wind and uplift facilitates over-water flight in facultative soaring birds.

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    Flying over the open sea is energetically costly for terrestrial birds. Despite this, over-water journeys of many birds, sometimes hundreds of kilometres long, are uncovered by bio-logging technology. To understand how these birds afford their flights over the open sea, we investigated the role of atmospheric conditions, specifically wind and uplift, in subsidizing over-water flight at a global scale. We first established that ΔT, the temperature difference between sea surface and air, is a meaningful proxy for uplift over water. Using this proxy, we showed that the spatio-temporal patterns of sea-crossing in terrestrial migratory birds are associated with favourable uplift conditions. We then analysed route selection over the open sea for five facultative soaring species, representative of all major migratory flyways. The birds maximized wind support when selecting their sea-crossing routes and selected greater uplift when suitable wind support was available. They also preferred routes with low long-term uncertainty in wind conditions. Our findings suggest that, in addition to wind, uplift may play a key role in the energy seascape for bird migration that in turn determines strategies and associated costs for birds crossing ecological barriers such as the open sea

    Effect of the desogestrel metabolite on vascular-platelet hemostasis

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    The purpose of the study is the mechanism of activation of the vascular-platelet link of hemostasis under the influence of hormonal contraceptives.Цель исследования - изучение механизма активации сосудисто-тромбоцитарного звена гемостаза под влиянием гормональных контрацептивов

    Shortened PQ interval in the differential diagnosis of Anderson-Fabry disease: a case report

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    In this article, we present a case of a patient with a late diagnosis of Fabry disease caused by a pathogenic variant in the GLA gene (p.1287_1288dup), who repeatedly attempted interventional treatment of Wolff-Parkinson-White Syndrome due to characteristic electrocardiographic pattern of ventricular preexcitation and paroxysmal arrhythmias. The proposed pathognomonic signs of the disease will ensure timely diagnosis and the appointment of specific treatment

    Study of the Two-Gap Superconductivity in GdO(F)FeAs by ScS-Andreev Spectroscopy

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    Current-voltage characteristics and dynamic conductance of the superconductor - constriction - superconductor junctions in GdO(F)FeAs polycrystalline samples with critical temperatures Tc^local = 46 - 53 K were investigated. Two superconducting gaps, the large Delta_L = 10.5 +- 2 meV, and the small one Delta_S = 2.3 +- 0.4 meV were clearly observed at T = 4.2 K. The 2Delta_L/kTc^local = 5.5 +- 1 ratio gives support to the strong coupling mechanism which is responsible for the high Tc value. Temperature dependence of the large gap Delta_L(T) indicates the presence of intrinsic proximity effect (in k-space) between two superconducting condensates.Comment: 7 pages, 6 figures. Submitted to Journal of Physics: Conference Serie

    Gene Flow and Hybridization between Numerically Imbalanced Populations of Two Duck Species in the Falkland Islands

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    Interspecific hybridization is common in plants and animals, particularly in waterfowl (Anatidae). One factor shown to contribute to hybridization is restricted mate choice, which can occur when two species occur in sympatry but one is rare. The Hubbs principle, or “desperation hypothesis,” states that under such circumstances the rarer species is more likely to mate with heterospecifics. Here we report interspecific hybridization between two waterfowl species that coexist in broad sympatry and mixed flocks throughout southern South America. Speckled teal (Anas flavirostris) and yellow-billed pintails (Anas georgica) are abundant in continental South America, but in the Falkland Islands speckled teal outnumber yellow-billed pintails approximately ten to one. Using eight genetic loci (mtDNA and 7 nuclear introns) coupled with Bayesian assignment tests and relatedness analysis, we identified a speckled teal x yellow-billed pintail F1 hybrid female and her duckling sired by a male speckled teal. Although our sample in the Falkland Islands was small, we failed to identify unequivocal evidence of hybridization or introgression in a much larger sample from Argentina using a three-population “isolation with migration” coalescent analysis. While additional data are needed to determine if this event in the Falkland Islands was a rare singular occurrence, our results provide further support for the “desperation hypothesis,” which states that scarcity in one population and abundance of another will often lead to hybridization
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