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521
Tribological Performance of Electrochemically Textured EN-GJS 400-15 Spheroidal Cast Iron
Published 2025-05-01“…This paper presents an experimental study of uniform and variable texture patterns on a honed EN-GJS 400-15 spheroidal graphite cast iron surface. Textured samples were fabricated using a CNC electrochemical jet machining technique and tested against a 52100 G5 roller countersurface featuring a rectangular 1 mm × 13 mm contact area. …”
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522
Influence of wave effect on fiber stress limit under tensile tests of composite material
Published 2019-12-01“…Fibers of glass, carbon, kevlar, or their combinations were used. Isotropic materials – epoxide, polyester and vinyl ether – were used as binders.Research Results. …”
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523
Removal of Pb (II) from Synthetic Solution and Paint Industry Wastewater Using Activated Carbon Derived from African Arrowroot (Canna indica) Stem
Published 2020-01-01“…The effects of pH, initial Pb (II) ion concentration, and adsorbent dose were studied using an aqueous solution prepared using pure lead nitrate (Pb(NO₃)₂) on a batch mode. …”
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524
Experimental Study of K-Band Broadband Antenna Array Using Artificial Inhomogeneous Dielectric Structures
Published 2019-12-01“…Measurements were carried out using an Agilent E8363B PNA vector circuit analyzer. …”
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525
Effect of Manipulation Methods and Storage Environments on the Microstructural, Chemical, and Mechanical Properties of Calcium-Enriched Mixture Cement
Published 2025-01-01“…The data were analyzed by Shapiro–Wilk, Levene, independent t, one-way ANOVA, and Tukey HSD tests. …”
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526
Investigating microarchitectural characteristics of woven bone exposed to ionizing radiation: comparative analysis of two segmentation methods and their impact on trabecular measur...
Published 2025-02-01“…ROI definition was performed by a single operator using two methods: (a) interactive segmentation, where the woven bone was manually outlined within the bone defect region, and (b) a standardized, predefined rectangular ROI. Bone volume fraction (BV/TV), trabecular thickness (Tb.Th), trabecular separation (Tb.Sp), trabecular number (Tb.N), bone surface (BS/BV), and fractal dimension (FD) were assessed for both segmentation methods. …”
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527
Species Diversity, Growth, Status, and Biovolume of Taia River Riparian Forest in Southern Sierra Leone: Implications for Community-Based Conservation
Published 2020-01-01“…In this study, we enumerated 602 individual trees, which comprised 49 species that belong to 37 genera in 25 families. In total, 14 rectangular plots of dimension 20 × 50 m2 were demarcated. …”
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528
Influence of inorganic composition and filler particle morphology on the mechanical properties of self-adhesive resin cements
Published 2022-08-01“…ObjectivesThis study aimed to evaluate the influence of inorganic composition and filler particle morphology on the mechanical properties of different self-adhesive resin cements (SARCs).Materials and MethodsThree SARCs including RelyX Unicem-2 (RUN), Maxcem Elite (MAX), and Calibra Universal (CAL) were tested. Rectangular bar-shaped specimens were prepared for flexural strength (FS) and flexural modulus (FM) and determined by a 3-point bending test. …”
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529
MORPHOLOGICAL AND ANATOMICAL STUDY OF GRANULES WITH SEEDS EPIDERMIS OF PLANTAGO OVATA FORSSK
Published 2017-07-01“…Microscope “Micromed-1” and digital camera MD300 Electronic Eyepiece (Jincheng) were used. Photos were edited in Adobe Photoshop CS6.Results and discussion. …”
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530
Research and development of pulse electronic control devices with UV lamps
Published 2022-06-01“…Relative values for radiant efficiency of the 254-nm mercury line for UV lamps under study were determined. Theoretical research of electronic ballasts led to the development of a semiconductor switching and power supply circuit for the discharge lamp based on high-frequency rectangular pulses. …”
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531
Broadband Back-Short Transition From Waveguide to Thin Substrate-Integrated Waveguide in Multilayer Substrate in 270-GHz Band
Published 2025-01-01“…A broadband right-angle transition from a rectangular waveguide (RWG) to a substrate-integrated waveguide (SIW) with a small narrow-wall width is proposed in the 270 GHz band. …”
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532
Däbrä Aron: A Rock-cut Monastic Church, Mäqet District of Northern Ethiopia
Published 2020-11-01“…The nave’s səqurät, rectangular in shape, allows, except rainfall droplets, entrance of sunlight into the church. …”
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533
Designs and materials of flexible wearable microstrip patch antennas: a systematic review
Published 2025-05-01“…To investigate solutions to these questions, 46 related papers were identified via scientifically accepted review planning and conducting processes. …”
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534
Research on dimension measurement algorithm for parcel boxes in high-speed sorting system
Published 2025-07-01“…The effectiveness of the model improvement strategy and the universality of the detection model were verified on the packing box data set and the public data set. …”
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535
Impact of Wall Impedance Phase Angle on Indoor Sound Field and Reverberation Parameters Derived from Room Impulse Response
Published 2022-09-01“…Theoretical considerations have been accompanied with numerical simulations carried out for a rectangular room. The case of zero phase angle, which is often assumed in room acoustic simulations, was taken as a reference, and differences in the sound pressure level and decay times were determined in relation to this case. …”
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536
Power Losses in the Multi-Turn Windings of High-Speed PMSM Electric Machine Armatures
Published 2025-07-01“…For the purpose of confirming the results and conclusions derived from simulation studies, a number of physical experiments were carried out, consisting in determining the power losses in multi-turn coils of different designs. …”
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537
Spectral Method of Measuring of Changes in Time Intervals between Periodic Pulse Sequences
Published 2019-06-01“…In this case, only those harmonic components were taken into consideration that have a maximum sensitivity to delay time deviations and a minimum sensitivity to uncorrelated signal parameters changes.To achieve the maximum effect, the influence of the pulse shape of periodic sequences on the measurement accuracy was investigated. …”
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538
Influence of localised corrosion shape on adhesive damage and a bonded assembly under thermo-mechanical loading
Published 2025-05-01“…The effects of corrosion geometry on adhesive and plate damage were evaluated. In the first part, a three-dimensional finite element method (FEM) was used to analyse a cracked and corroded AL 2024 T3 alloy with a V-notch under thermo-mechanical loading. …”
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539
Remains from a Demolished Cultural Heritage: A Historical House in Karaagac
Published 2021-01-01“…However, today it is observed that these buildings were abandoned for various reasons and then demolished due to the lack of maintenance. …”
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540
THERMOELECTRIC DEVICE FOR TREATMENT PANARIATION
Published 2019-06-01“…Experimental studies of the device were carried out on a specially designed test bench for checking the adequacy of the mathematical model. …”
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