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1661
An In Vitro Comparison of Different Diagnostic Methods in Detection of Residual Dentinal Caries
Published 2010-01-01“…The aim of this study was to investigate the efficiency of different diagnostic methods in detection of residual dentinal caries in excavated cavities. …”
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1662
Method of Helicopter Turboshaft Engines’ Protection During Surge in Starting Mode
Published 2025-01-01“…Neural network quality metrics such as accuracy (0.995), precision (0.989), recall (1.0), and <i>F</i>1-score (0.995) indicate high efficiency of the proposed method.…”
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1663
Study on the Design Method of High-Resolution Volume-Phase Holographic Gratings
Published 2024-10-01“…Volume-phase holographic gratings are suitable for use in greenhouse gas detection imaging spectrometers, enabling the detection instruments to achieve high spectral resolution, high signal-to-noise ratios, and high operational efficiency. However, when utilized in the infrared wavelength band with high dispersion requirements, gratings struggle to meet the demands for low polarization sensitivity due to changes in diffraction performance caused by phase delays in the incidence of light waves with distinct polarization states, and current methods for designing bulk-phase holographic gratings require a large number of calculations that complicate the balance of diffraction properties. …”
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1664
Research on Calculation Method for Maximum Mean Acceleration in Longitudinal Train Collision
Published 2021-01-01“…A large number of numerical simulations are required to design an energy absorption scheme for train crashworthiness, leading to low design efficiency in the early stage. Based on train collision dynamics theory and the finite element method, a dynamic finite element model of longitudinal train collision is established. …”
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1665
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1666
Response of tetraploid red clover to the time and method of seed grass harvesting
Published 2018-04-01“…The choice of harvesting method is determined by the crop, the state of seed grass and weather conditions during the harvesting period. …”
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1667
A Method for the Automatic Selection of Training Tasks in Learning Environment for IT Students
Published 2020-04-01“…Methods and materials. The article provides a distinction between the concepts of complexity, difficulty, and the learning effect of training tasks. …”
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1668
New method for quantitatively characterizing emulsifying ability of oil displacement agents
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1669
Method of epidural adhesiolysis in the treatment of neurocompression pain syndrome of the lumbosacral spine
Published 2020-06-01“…Materials and methods. 218 patients were examined, mean age 60.3 ± 2.1 years (age range between 18 and 94 years). …”
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1670
Motivation and stimulation of employment specialists in the sphere of information technologies
Published 2016-04-01“…We study the needs and motivations of IT professionals. A method for evaluating the effectiveness of labor specialists in the sphere of information technologies and offered rates for calculating the efficiency of workers, including factors: timeliness; the number of completed tasks; detected errors; the cost of bug fixes. …”
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1671
Salting-Out Assisted Liquid-Liquid Extraction of Cr (VI) from Water Samples before Its Determination by UV-Vis Spectrophotometry
Published 2023-01-01“…This paper proposes salting-out assisted liquid-liquid extraction for selective extraction of a Cr (VI)-1,5-diphenylcarbazide complex before its determination by UV-Vis spectrophotometry. Parameters affecting the complexation process and the extraction efficiency of the method were studied. …”
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1672
Method of Estimating Energy Consumption for Intermodal Terminal Loading System Design
Published 2024-12-01“…This included determining the specific parameters of the equipment, such as speed, span, and efficiency coefficients, as well as ensuring compliance with installation constraints dictated by the terminal layout. …”
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1673
Penerapan Metode Prototyping Pada Aplikasi Sentra Pelayanan Kepolisian Terpadu Berbasis Web
Published 2022-06-01“…This system was built using the Protoyping Method, which is a method to get an overview of the system obtained from the user first, then it will be visited by the user so that it can be a reference for system development. …”
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1674
Synthesis of novel magnesium ferrite Schiff base chitosan nanocomposite for efficient removal of pb(II) ions from aqueous media
Published 2025-02-01“…Abstract In this study, a novel MgFe2O4-Schiff base-chitosan nanocomposite was synthesized using a straightforward crosslinking method. The synthesis involved integrating MgFe2O4 nanoparticles with modified chitosan through a Schiff base formed by the reaction between terephthalaldehyde and aminopyrazine. …”
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1675
Simultaneous determination of 9 succinate dehydrogenase inhibitor compounds in vegetables by QuEChERS combined with gas chromatography-tandem mass spectrometry
Published 2025-04-01“…The results of different levels of spiked experiments for 9 SDHIs showed a good recovery rate of 80.4%-98.2% and the relative standard deviations (RSDs) were 3.0%-7.9%. The method was efficient, fast, easy to operate, with low detection cost, high recovery rate, high sensitivity, and good reproducibility, which was suitable for batch determination of 9 SDHIs in daily vegetables.…”
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1676
Design of a High-Efficiency External Rotor Interior Permanent Magnet Synchronous Motor Without Magnetic Leakage Flux Path
Published 2025-06-01“…The conventional model based on an external rotor surface-mounted permanent magnet synchronous motor (SPMSM) is analyzed using a statistical method. Design directions are derived by comparing efficiencies at two major operating points with different motor characteristics. …”
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1677
Objective and Subjective Assessment of the Sound Attenuation Efficiency Obtained by Custom Moulded Earplugs with Various Acoustic Filters – a Preliminary Study
Published 2022-06-01“…The attenuation value was defined as the difference (in dB) between the hearing threshold of the test signal with a hearing protector and the hearing threshold determined without a hearing protector. Results: The results of the objective method proved that in addition to the significant impact of frequency on the attenuation values, the type of filter used in custom moulded earplugs also had a significant effect. …”
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1678
Investigating the Impact Corporate Financialization on Investment Efficiency based on the Moderating role of Financing Constraints of Companies listed on the Tehran Stock Exchange
Published 2025-06-01“…The main purpose of this study is to show whether the financing of companies has an impact on their investment efficiency and how this impact is determined by the moderator of the financing constraints of companies. …”
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1679
The relationship between ethical procurement, corporate image and procurement efficiency in public sector procurement: A case of public entities in Bindura
Published 2024-06-01“…The sample size of this research was determined using the Raosoft Sample Size Calculator. …”
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1680
Determination of Tungsten, Molybdenum and 5 Associated Elements in Tungsten-Molybdenum Ore by Inductively Coupled Plasma-Optical Emission Spectrometry with Direct Sintering
Published 2023-10-01“…It is insoluble in hydrochloric acid, nitric acid and aqua regia, and the alkali melting and mixed acid dissolution method was often selected for sample digestion. However, the matrix effect cause by the alkali melting method seriously affects the accuracy and detection limit of instrument testing; the acid dissolution method has low dissolution efficiency for tungsten, molybdenum and other insoluble elements, and requires a long time and a complex pretreatment process by using a variety of inorganic strong acids such as hydrofluoric acid and aqua regia, which can also cause damage to the analytical and testing instruments.OBJECTIVESTo develop a simple and efficient method for quantitative analysis of tungsten and molybdenum and its associated elements in tungsten-molybdenum ore.METHODSBased on alkaline melting and acid dissolution, a method was established by inductively coupled plasma-optical emission spectrometry (ICP-OES) with direct sintering and complex extraction of hydrochloric acid-phosphoric acid-citric acid. …”
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