Results 1 to 10 of about 156,092 (120)

Mixed convection flow and heat transfer in a double lid- driven cavity containing a heated square block in the center [PDF]

open access: yesMATEC Web of Conferences, 2020
In the present work, laminar mixed convection of a Newtonian fluid around a hot obstacle in a square cavity with moving vertical walls is studied numerically. The objective of this study is to analyze the effect of the Richardson number (0 ≼ Ri ≼ 10) and
Ouahouah Asma   +4 more
doaj   +1 more source

Numerical study of the coupled natural convection with surface radiation in a cylindrical annular enclosure [PDF]

open access: yesMATEC Web of Conferences, 2020
The interaction of natural convection with thermal radiation of black surfaces in a cylindrical enclosure filled with air has been numerically investigated.
MEDEBBER Mohamed Amine   +4 more
doaj   +1 more source

Nickel-titanium files in endodontics: Development, improvement and modifications of nickel-titanium alloy [PDF]

open access: yesVojnosanitetski Pregled, 2023
nema
Živković Slavoljub   +3 more
doaj   +1 more source

Physicochemical Effects of Niobic Acid Addition Into Dental Adhesives

open access: yesFrontiers in Materials, 2021
The incorporation of metallic oxides in dental adhesives has been a strategy to confer improved radiopacity and physicochemical properties for polymers.
Isadora Martini Garcia   +8 more
doaj   +1 more source

Removal of Methyl Green Dye from Aqueous Solutions Using Activated Carbon Derived from Cryogenic Crushed Waste Tires [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2022
Activated carbon obtained from cryogenic crushing of used tire prepared and characterized previously was used as an adsorbent for the removal of cationic dye “methyl green dye MG” from an aqueous solution.
Ahmed Belgacem   +3 more
doaj   +1 more source

Effects of iron ions, doping methods and nanotubular morphology on TiO2 solar photocatalytic performance

open access: yesWater Science and Technology, 2021
The effects of Fe2+ and Fe3+ as TiO2 cocatalysts were studied, and the experimental results showed that Fe3+ was more efficient than Fe2+, which needed an intermediate reaction to produce hydroxyl radicals. TiO2 was modified with the aim of improving its
Rafik Melki   +2 more
doaj   +1 more source

Differentiation of the Left and Right Side Interventricular Septum Function in Healthy Subjects by Vector Velocity Imaging

open access: yesAnatolian Journal of Cardiology, 2022
Background: The present study aimed to assess and compare regional strain of the right and left sides of interventricular septum in healthy subjects using velocity vector imaging analysis due to the importance of interventricular septum and limited basic
Masoumeh Faghani Langroudi   +4 more
doaj   +1 more source

Elaboration and Mechanical-Electrochemical Characterisation of Open Cell Antimonial-lead Foams Made by the “Excess Salt Replication Method” for Eventual Applications in Lead-acid Batteries Manufacturing [PDF]

open access: yesKemija u Industriji, 2020
In this study, open cell 25 % antimony-lead alloy foams are fabricated for possible use to lighten thick plates of lead-acid batteries. A new inexpensive and simple variant of the salt replication process is developed and explored.
Amel Hind Hassein-Bey   +3 more
doaj   +1 more source

Current Trends in the Development and Use of Personalized Implants: Engineering Concepts and Regulation Perspectives for the Contemporary Oral and Maxillofacial Surgeon

open access: yesApplied Sciences, 2021
The recently adopted Medical Device Regulation (MDR) has finally entered into force on 26 May 2021. As innovation and especially the advent of customized prostheses has deeply modified many surgical procedures in our discipline, it is imperative for the ...
Alessandro Tel   +7 more
doaj   +1 more source

Disinfection of Orthodontic Elastomers and Its Effects on Tensile Strength

open access: yesTurkish Journal of Orthodontics, 2022
Objective: This study aimed to investigate the effect of different disinfection protocols on the mechanical properties of orthodontic elastomeric ligatures (EL), an important issue to biosafety improvement and infection control, and to avoid cross ...
Leandro Berni Osorio   +4 more
doaj   +1 more source

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