311 research outputs found

    Pre-segmentation influence on the efficiency of multi-temporal image registration

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    The analysis of the segmentation effect of various background areas in the image on the quality of registration of multi-temporal bridge structure images using stochasticalgorithms is carried out. The influence of the parameters of bridge structures image registration, such background structures as cloudiness and ground cover, on the operatingrange is analyzed under the assumption that the similarity model describes mutual volumetric images

    Noise resistance of stochastic image binding algorithms on the base of mutual information

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    Based on the mutual information of Shannon, Tsallis and Renyi, relay stochastic algorithms for image binding were synthesized and their stability and accuracy were studied

    Dietary Quality and Comorbidities of Adults at Medical Risk for Diabetes

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    Background and aims: The current study evaluates following a special diet with diet quality and comorbidities (hypertension, hypercholesterolemia, and obesity) in four racial/ethnic groups diagnosed with prediabetes or “at risk for diabetes”. Methods and results: This is a cross-sectional analysis of data from the National Health and Nutrition Examination Surveys (NHANES), 2007- 2008 and 2009-2010. Sample weights were used to achieve a representative sample. Data were available for N = 2666 adults, aged ≥20 years (508 Mexican American, 294, Other Hispanic, 616 Black non-Hispanic, and 1248 White non-Hispanic) who were medically diagnosed with either prediabetes or “at risk for diabetes”. Those reporting following a special diet had greater odds of meeting saturated fat guidelines

    Valuable agronomic traits of chufa (Cyperus esculentus L.) accessions from the VIR collection: methods of preparing nodules for long-term storage

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    Background. Chufa is one of the most promising rare oilseed crops. The issues of preserving and obtaining highquality seed material are very important. The development of long-term genebank storage techniques for chufa nodules is a pressing task.Materials and methods. We studied 18 chufa germplasm accessions of various origin. The field study was conducted in 2010–2012 under the environmental conditions of Krasnodar Territory, Russia. Protein and oil content was analyzed according to the guidelines on the methods of quality control and safety of bioactive food additives (R 4.1.1672-03…, 2004); vitamin E according to the guidelines on the methods of analyzing the quality and safety of food products (Skurikhin, Tutelyan, 1987); fatty acid composition in line with IUPAC (1979) and GOST R 512677-2006, using an IIRGCS chromatograph.Results and conclusions. The study of valuable agronomic characters in chufa accessions showed that the height of plants varied from 49 to 69 cm; the number of nodules per plant from 80 to 110 pcs; the weight of nodules per plant from 18 to 49 g; the weight of nodules per plot (1 m2 ) from 101 to 393 g. Their oil content varied from 13.1 to 21.06 g/100 g, and protein content from 6 to 10%. Chufa accessions contained large amount of vitamin E: 19.23 to 35.23 mg/100 g. The content of saturated fatty acids in chufa oil was 17.75 to 20.99%, monounsaturated fatty acids from 68.21 to 71.55%, and polyunsaturated fatty acids from 9.94 to 12.17%. A technique of preparing chufa nodules for long-term storage was developed. The optimal time to assess germination energy is four days, with 11 days for germination percentage. Storage of chufa nodules for three years at a temperature of +20°C causes a decrease in their germination by 15–16%. When stored under low positive (+4°C) or negative temperatures (–18°C and –196°C), their germination percentage remained unchanged

    Metallurgical enterprise I.P. Osokina in the middle Urals

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    Дается характеристика развития хозяйства предпринимателя Осокина на протяжении XVIII – начала Х1Х веков. Показаны этапы его развития и дробления среди наследников.The authors give characteristic development of the economy of the en-trepreneur Osokin during XVIII - beginning of XIX centuries. They show the stages of its development and fragmentation among the heirs

    The balance of inorganic nitrogen in the basins of small rivers (On the example of the watershed Northern Dvina)

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    © 2016,International Journal of Pharmacy and Technology. All rights reserved.In article features of nitrogen circulation transformation as a result of influence of anthropogenous factor on the example of the small river basin of the river Northern Dvina are considered. Relevance of research is confirmed by a number of negative processes common to the present stage of humanity development over its expense caused by excess of nitrogen inflow to the biosphere. The method of balance which allows to objectively estimate a contribution of economic activity and extent of transformation of nitrogen circulation is the cornerstone of anthropogenous nitrogen component allocation. The structure analysis of received inorganic nitrogen balance part showed that 80 - 97% of the nitrogen amount arriving on reservoirs are the share of atmospheric precipitation. Even in the low-developed territories,with insignificant anthropogenous influence,the transformation of biogeochemical nitrogen circulation which is expressed in accumulation of this component is noted. The circulating air streams are the main distributors of nitrogen influencing its natural cycle. Thus,cross-border transfer of the polluting substances represents one of priority and relevant environmental problems of the present

    Delimitation and analysis of the spatial structure of the Kazan urban agglomeration

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    © 2018 Institute of Physics Publishing. All rights reserved. Intensive urbanization is a feature of the modern stage of civilization development. The urban population of the planet is concentrated in new urban formations - urban agglomerations. The main goal of this work is to analyze the approaches to the delimitation of the Kazan urban agglomeration and its spatial structure. The isochronous method of transport accessibility of the agglomeration core was used. For the Kazan agglomeration in the delimitation of optimum orientation on 1-hour travel time band of accessibility. Comparison with the formal method of agglomeration delimitation (administrative-territorial) showed that the isochronous method more objectively reflects the agglomeration processes of the studied area. Realization of the "real" borders of the Kazan agglomeration will promote the adoption of the right management decisions and the implementation of measures in the field of regulation of social processes

    Thermal analysis of charge-transfer complex formed by nitrogen dioxide and substituted calix[4]arene: Characterization of complexation reversibility

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    Simultaneous thermal analysis with evolved gas analysis (STA-EGA) was used to study the ability of 1,3-alternate conformer of tert-butylcalix[4]arene with four n-propoxy substituents (1) to be applied for detection of nitrogen dioxide in reversible sensors. Solid calixarene 1 forms an intensively colored charge-transfer complex (CTC) with gaseous NO2/N2O4. Using the STA-EGA method, the nature and conditions of CTC bleaching were characterized, including the conditions of its reversible change of color from white to dark blue and back at CTC formation and decomposition. For this, the thermal stability of CTC and its regeneration products were studied. This, together with the ion thermograms for evolved gases, gives the information on the oxidation of 1 by nitrogen dioxide if present. © Akadémiai Kiadó, Budapest, Hungary 2011

    Analysis of guest binary mixtures by tert-butylcalix[6]arene using host memory of previously bound guests

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    A new principle of quantitative and qualitative analysis of binary organic mixtures is offered, which is based on an ability of calixarene receptor for specific polymorphic transitions related to the composition of the analyzed guest mixture. The ability of tert-butylcalix[6]arene to remember selectively some guests bound from headspace both of pure liquids and their binary mixtures is used. The image of guest mixture remains written in metastable polymorphs of host after partial or complete guest elimination from clathrates. The memory was read using differential scanning calorimetry as the enthalpy of exothermic polymorphic transition of host collapse. This enthalpy monotonously changes with the variation of guests' ratio in mixture, unlike the enthalpies of endothermic pseudopolymorphic transitions of guest release. So, the composition of volatile binary mixture can be estimated using only one receptor and only one its parameter even in absence of preferential binding from a binary mixture of guests. This is an example of a genuine molecular recognition. © 2013 The Royal Society of Chemistry

    Amperometric enzyme immunosensors for diagnosing certain infectious diseases

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    Amperometric enzyme immunosensors based on planar electrodes were developed for the rapid determination of some bacterial antigens. Conditions for the operation of analytical devices (matrix component, pH of the buffer solution, and the dilution of antibodies in the biosensing part of the sensor) were selected. The analytical characteristics of enzyme immunosensors (analytical ranges and determination limits) were estimated. The analytical devices were tested in determining pyogenic streptococcus and aurous staphylococcus antigens in the blood serum of patients suffering from infectious diseases. It was shown that the developed sensors can be used for diagnosing diseases caused by these microorganisms. © 2005 Pleiades Publishing, Inc
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