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5581
Membrane Assisted Simultaneous Extraction and Derivatization with Triphenylphosphine of Elemental Sulfur in Arabian Crude Samples by Gas Chromatography/Mass Spectrometry
Published 2015-01-01“…Direct quantitation of elemental sulfur from crude oil requires an efficient sample preparation method. This paper describes how simultaneous extraction derivatization of elemental sulfur was performed for the first time using porous hollow fiber membrane. …”
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5582
Universal Modeling for Non-Destructive Testing of Soluble Solids Content in Multi-Variety Blueberries Based on Hyperspectral Imaging Technology
Published 2025-04-01“…The results showed that the PLSR model pretreated by S-G-MSC-SNV had the best performance, and the determination coefficient, root mean square error and residual prediction deviation of the prediction set were 0.94, <inline-formula><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><semantics><mrow><mn>0.33</mn><mo>%</mo></mrow></semantics></math></inline-formula> and 3.94, respectively. …”
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5583
Maintenance Scheduling for Buildings Using Fuzzy Logic Application
Published 2025-06-01“…The fuzzy logic method can be employed for construction project scheduling according to the schedule determined by the contractor. …”
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5584
Human lachrymal fluid preparation methodology eVol®MEPS – Green analytical approach in clinical and forensic analysis
Published 2025-06-01“…Eco-friendly and efficient extraction methods are considered as an important area of interest in all analytical procedures. …”
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5585
Management of the Process of R & D Cost Formation in State Scientific and Educational Institutions
Published 2019-01-01“…In addition, the rating of educational institutions, their competitiveness in the market of intellectual services, including, depends on the number of successfully implemented together with business partners of innovative projects that are based on research and development, the number of commercialized results of intellectual activity (hereinafter-R&D) and concluded state contracts. Methods of algorithmization, modeling, calculation coefficients, expert estimates, determination of the initial (maximum) price of the contract have been used. …”
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5586
Development and validation of a highly-sensitive, quantitative LC-MS/MS assay to evaluate plasma oxytocin
Published 2025-04-01“…Results: A lower limit of quantification of 1 ng/L was achieved. The method was validated for oxytocin concentrations ranging from 1 ng/L to 75 ng/L, with precision (coefficient of variation) below 10 %, accuracy ranging from 94 % to 108 %, and measurement uncertainty below 15 %. …”
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5587
Attenuation correction in single-photon emission computed tomography for NURBS-based cardiac-torso phantom using dual-energy acquisition
Published 2020-07-01“…After the image reconstruction, a comparison between image groups was done using optimized UIQI to determine the quality of used reconstruction methods. …”
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5588
Estimation of the thermal resistance of snow cover based on the ground temperature
Published 2021-05-01“…To develop a method for determining the thermal resistance of snow cover and the effective coefficient of thermal conductivity of snow, numerical experiments were performed using a mathematical model, which allowed establishing the conditions for the applicability of the method. …”
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5589
Extraction of blurred infrared targets based on a manifold regularized multiple-kernel model
Published 2016-06-01“…Specific to the problem of infrared target extraction with blurred edges,this article introduces an extraction method based on a manifold regularized multiple kernel semi-supervised classification model.Firstly,the maximum variance of inter-class(OTSU) method is used to compute the initial segmentation threshold,and the certain target and background areas and the uncertain blurred edge area are determined.Then,local space sets of pixels are constructed in each area,the multiple-kernel functions are used to map the grayscale mean and variance in local space,and the location information feature in local space is obtained by manifold regularization(MR).On the basis of features,a semi-supervised classification model is established to classify the local space sets of pixels in the blurred edge area.Finally,the optimal segmentation threshold is computed.Experiments with comparisons show that this method is efficient and less in time-consuming.…”
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5590
Investigation of the Psychometric Properties of the Turkish Version of the Epistemic Trust, Mistrust, and Credulity Questionnaire in Adults
Published 2025-06-01“…It was determined that the item total correlation coefficients of all items were above .30. …”
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5591
Analytical justifications of constructive parameters of bionic colters for vertical soil treatment
Published 2024-08-01“…The equation takes into account the main structural parameters of the turbo discs: diameter Dd, cutout height Hm, wave height Hw, number of cutouts n, and spiral coefficient k. As a result of analytical studies on the interaction process between a solid disc and plant residues, the optimal diameter value was determined to be Dd=460 mm under the condition of submerging stems with a thickness of 10-20 mm to a depth of 80 mm. …”
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5592
Research on the safety culture in medium and small enterprises
Published 2024-01-01“…Then, using SPSSAU online analysis software, expert surveys, and analytic hierarchy process (AHP), as well as the expert survey method, weights and rankings of every element of this safety culture element construction system were determined, which could provide a reference for the efficient of the safety culture construction. …”
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5593
Green sample preparation protocol for extraction of carbazoles from petroleum source rock
Published 2025-05-01“…In comparison with a fast organic solvent-based extraction method (accelerated solvent extraction, ASE) the microwave assisted surfactant extraction (MASE) method was more efficient with a very good reproducibility.…”
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5594
International academic mobility through the prism of soft power theory
Published 2020-01-01“…Statistical reports and data from global rating systems were analysed and processed through the method of secondary data analysis. The coefficient of rank correlation of the relationship between the number of foreign students in the countries (included in the Top 30 of soft power) and indicators of the rating of the world universities was calculated according to Spirman’s rank correlation test.Results and scientific novelty. …”
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5595
Validity and reliability of a novel 3D scanner for assessment of the shape and volume of amputees' residual limb models.
Published 2017-01-01“…Mean percentage error of the Artec Eva scanner (validity) was 1.4% of the criterion volumes. Correlation coefficients between the Artec Eva and the Romer determined variables were higher than 0.9. …”
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5596
Characteristics of Local Anisotropy Fields of Paper Structure and Deformation Properties
Published 2025-06-01“…Non-destructive and destructive methods have been used to measure 60 g/m2 paper samples measuring 120×120 mm, divided into squares of 15×15 mm. …”
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5597
Occupational Dysfunction as a Mediator between Recovery Process and Difficulties in Daily Life in Severe and Persistent Mental Illness: A Bayesian Structural Equation Modeling Appr...
Published 2022-01-01“…Confirmatory factor analysis, multiple regression analysis, and Bayesian structural equation modelling (BSEM) were determined to analyze the hypothesized model. If the mediation model was significant, the path coefficient from difficulty in daily life to recovery and the multiplication of the path coefficients mediated by occupational dysfunction were considered as each the direct effect and the indirect effect. …”
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5598
Mineral and Amino Acid Composition of Germinated and Canned Wheat Grains
Published 2019-12-01“…A set of experiments was conducted to define the mineral substances and amino acid composition as factors that affect the chemical composition of a product during its production. Study objects and methods. The research featured soft wheat grain, germinated wheat grain, and canned germinated wheat grain. …”
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5599
Ship Pipe Layout Based on Grid Normalized Astar Algorithm
Published 2025-01-01“…First, the mathematical models are established using bounding box and the grid method. Then, each path node is determined by the normalized weight values of different targets using the branch pipes splitting method, grid marking values, and the parent-child grid search strategy. …”
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5600
Numerical study on optimal geometric parameters of lining structures for roadway support using the artificial bee colony algorithm
Published 2025-08-01“…Abstract Lining structures are commonly used for roadway support in engineering practice; however, the method of determining the geometric parameters of lining structures should be properly addressed. …”
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