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Comparative Evaluation of Efficacy of Self-Assembling Peptide (P11-4), Bioactive Glass, and Arginine Bicarbonate Remineralizing Agents on Simulated Carious Lesion
Published 2024-12-01“…Remineralization of demineralized teeth was carried out three times a day for 14 days for 5 minutes using the appropriate remineralizing agents (Group A: calcium sodium phosphosilicate (bioactive glass), Group B: self-assembling peptide (P11-4), Group C: arginine bicarbonate remineralizing agents, and control group: Group D: deionized water). Using the Vickers hardness number, the degree of demineralization and remineralization was assessed. …”
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62
First-Principles Calculations to Investigate the Third-Order Elastic Constants and Mechanical Properties of Mg, Be, Ti, Zn, Zr, and Cd
Published 2021-01-01“…Besides, we have calculated the pressure derivatives of SOECs related to third-order elastic constants, and high-pressure effects on elastic anisotropy, ductile-to-brittle criterion, and Vickers hardness are also investigated. The results show that the hardness model Hv=1.877k2G0.585 is more appropriate than Hv=2k2G0.585−3 for HCP metals under high pressure.…”
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63
Üç Farklı Tek Renkli Rezin Kompozitlerin Mekanik Özelliklerinin Değerlendirilmesi
Published 2023-06-01“…Hazırlanan örneklere alüminyum oksit cila diskleri (Sof-Lex disk, 3M Espe, ABD) ile polisaj yapıldı. Kompozit örneklerin Vickers sertlik değerleri (n=10) (VHN, Shimadzu, Kyoto, Japonya) ve yüzey pürüzlülük değerleri (Ra) (n=10) profilometre cihazı (MarSurf M 300 C, Mahr, Almanya) kullanılarak ölçüldü. …”
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64
Process Optimization of Spark Plasma Sintering Parameters for Tungsten Carbide/Silicon Nitride/AA2219 Composites by Taguchi Method
Published 2022-01-01“…It was decided to test the admixed powders and Vickers hardness tester, optical microscope, and Archimedes-based density testing to evaluate the sintered compacts. …”
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65
Green LED as an Effective Light Source for Curing Acrylate-Based Dental Resins in Combination with Irgacure 784
Published 2018-01-01“…The mechanical properties, such as Vickers microhardness, compressive strength, diametric tensile strength, flexural strength, and E-modulus of the created samples, were investigated. …”
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66
Effect of Gastric Acid on the Surface Properties of Different Composite Resin Restorative Materials: Scanning Electron Microscope (SEM) Evaluation
Published 2025-01-01“…Objective: The aim of this study was to evaluate the effect of gastric acid on different resin-based composites with surface microhardness, surface roughness and scanning electron microscopy (SEM).Methods: Three different composite resin restorative materials (Clearfil Majesty ES-2{Kuraray, Tokyo, Japan}, Beautifil II {Shofu, Ratingen, Germany}, Group Beautifil II LS {Shofu, Ratingen, Germany}) were used. Vickers microhardness and surface roughness measurements were evaluated at baseline, after 7 and 14 days of soaking in gastric acid. …”
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67
Characterization of Boride Coatings on AISI 8620 Steels without and with Hydrogen Permeation
Published 2022-01-01“…The experimental techniques of the Vickers microhardness and three-point bending were used. …”
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68
Brushing Effect on the Properties of Glass Ionomer Cement Modified by Hydroxyapatite Nanoparticles or by Bioactive Glasses
Published 2022-01-01“…Surface roughness was evaluated using a rugosimeter, Vickers hardness using a microdurometer, and mass variation measured in an analytical balance at 1, 7, 15, 30, and 60 days before and after the brushing test, with the aid of toothbrushing simulator and soft bristle toothbrushes. …”
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69
Sifat Mekanik dan Struktur Mikro Logam Paduan Mg-1.6Gd Sebagai Biomaterial yang Larut di dalam Tubuh
Published 2020-04-01“…The hardness of the alloys is obtained by the Vickers test with a different position on the samples. …”
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70
Effect of laser hardening on the mechanical, tribological and corrosion properties of low alloy steels
Published 2023-01-01“…Micro-structural changes, Vickers hardness as mechanical properties, and tribological properties with reciprocating wear tests were carried out. …”
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71
Physical and Mechanical Properties of Bulk-Fill, Conventional, and Flowable Resin Composites Stored Dry and Wet
Published 2022-01-01“…The purpose of this study was to determine filler weight (FW), fracture toughness (FT), Vickers hardness (VHN), sorption/solubility (S/S), and colour change (ΔE) of four resin composites in dry and wet conditions. …”
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72
Study on micro-structure, hardness and optimization of wear characteristics of Al6061/TiB2/CeO2 hot-rolled MMCs using Taguchi method
Published 2023-07-01“…Hardness of hybrid MMCs was evaluated by using hardness test rig (Vickers). Results revealed that the hardness strength of developed hybrid MMCs increased with increase of the reinforcement content. …”
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73
Polymerization Efficiency of a Dual-Cured Resin Cement through Zirconia with Three Different Cusp Inclinations
Published 2018-01-01“…Seventy-two resin cement (Multilink Speed) specimens were light-cured through the zirconia with three different cusp inclinations (30°, 20°, and 0°) for 20 s or 40 s (n=12). For each group, the Vickers hardness (VH) measurement was performed on half of the specimens, whereas the degree of conversion (DC) was tested for the other half with a Fourier transform infrared spectrometer. …”
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74
Development of Alumina-Titania Composite Layers on Stainless Steel through the Detonation Spray Method and Investigation of Salt Spray Corrosion Behavior along with Surface Examina...
Published 2023-01-01“…The hardness of coated and uncoated SS surfaces is determined by using the Micro Vickers hardness tester, which claims that the hardness of the SS surface has decreased after coating. …”
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75
The Influence of Nickel and Tin Additives on the Microstructural and Mechanical Properties of Al-Zn-Mg-Cu Alloys
Published 2014-01-01“…The outcomes of the retrogression and reaging processes which were carried on aluminum alloys indicate that the mechanical strength and Vickers hardness have been enhanced much better than under the aging at T6 temper.…”
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76
SUSTAINABLE CHEMISTRY FOR SUSTAINABLE INDUSTRY
Published 2016-01-01“…For what concern the technological properties, Ecosafe Plus has been tested by accredited laboratories with tribological trials (4 Ball wear test ASTM D 4172, Ball on disc test ASTM 6425, Brugger test DIN 51347, Vickers test ASTM D 2882), with elastomer compatibility test (ASTM D 471) and biodegradability test (OECD 310 F).…”
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77
Effect of Enamel Caries Lesion Baseline Severity on Fluoride Dose-Response
Published 2017-01-01“…Lesions were allocated to treatment groups (0, 83, and 367 ppm fluoride as sodium fluoride) based on Vickers surface microhardness (VHN) and pH cycled for 5 d. …”
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78
A study on the causes of the inconsistencies of the microstructure of welded joints of steel wire cord
Published 2019-08-01“…Relevance: the increase in the number of destruction of welded joints of the metal wire cord due to discrepancies in the microstructure of the welded seam.Purpose: to find the roots of defects in welded joints of metal wire cord to reduce the number of inconsistencies in this parameter and study the features of the formation of the microstructure of welded joints.Methods of research: as a material for research the metal wire cord of various designs made in steel – wire shop No. 2 of OJSC «BSW – Management Company of Holding «BMC» – a rod of own production was applied; the study was conducted using a Nikon SMZ 1000 stereoscopic microscope with a video system and an inverted metallographic microscope OLIMPUS GX-51 with a video system; measurement of hardness was carried out according to Vickers with a load of 0.5 kg on a hardness testing ZWICK 3Х5624АТ.Research results: the regularities and causes of the formation of mismatch of the microstructure of welded joints during welding on metal: incorrect setting of the welding machine (slowing down of the welding carriage); mismatch of the tempering temperature (a faulty button or operation home run twice); a small dwell time in the terminals (jaws) for tempering; inadequate execution of Regulation of the welded connection of the operator’s actions (pass or failure of the operation «tempering of the weld»); influence of external environmental factors (microclimate) of the operator’s workplace.…”
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79
Multiobjective Optimization of Turning Cutting Parameters for J-Steel Material
Published 2016-01-01“…This paper presents a multiobjective optimization study of cutting parameters in turning operation for a heat-treated alloy steel material (J-Steel) with Vickers hardness in the range of HV 365–395 using uncoated, unlubricated Tungsten-Carbide tools. …”
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80
Thermal Adsorption and Corrosion Characteristic Study of Copper Hybrid Nanocomposite Synthesized by Powder Metallurgy Route
Published 2023-01-01“…The developed composite’s micro Vickers hardness is evaluated by the E384 standard on ASTM value of 69 Hv and is noted by increasing the weight percentages of alumina nanoparticles. …”
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