Results 1 to 10 of about 1,892,477 (294)

Three dimensional evaluation of accuracy of bracket positioning

open access: yesJournal of Pharmacy and Bioallied Sciences, 2023
Introduction: The success of orthodontic treatment depends on accurate bracket placement, so researchers are constantly exploring new direct and indirect bonding methods with the help of cutting-edge imaging technologies like cone beam computed ...
Kapil Kamal Kishor Fafat   +5 more
doaj   +3 more sources

Analyzing the Impact of FDM Parameters on Compression Strength and Dimensional Accuracy in 3D printed PLA Parts [PDF]

open access: yesEngineering and Technology Journal, 2023
Fused deposition modeling (FDM) is an additive manufacturing (AM) technique frequently used to create prototypes and parts with intricate geometrical designs.
Hind Abdulridha, Tahseen Abbas
doaj   +1 more source

Distortion Analysis of Thin-Walled Investment Castings [PDF]

open access: yesArchives of Foundry Engineering, 2023
Dokra casting is famous for its Artistic value to the world but it is also sophisticated engineering. The technique is almost 4500 years old. It is practiced by the tribal artisans of India.
R. Mandal   +5 more
doaj   +1 more source

Linear Dimensional Change and Accu-racy of Fit of Positive Pressure Thermo–Formed Prosthodontic Materials [PDF]

open access: yesAl-Rafidain Dental Journal, 2012
To determine the dimensional accuracy of thermoformed dental base plates. Materials and methods: Six different types of thermoformed materials were used.
Zeina M Ahmad   +2 more
doaj   +1 more source

Accuracy assessment for high-dimensional linear regression [PDF]

open access: yesThe Annals of Statistics, 2018
This paper considers point and interval estimation of the $\ell_q$ loss of an estimator in high-dimensional linear regression with random design. We establish the minimax rate for estimating the $\ell_{q}$ loss and the minimax expected length of confidence intervals for the $\ell_{q}$ loss of rate-optimal estimators of the regression vector, including ...
Cai, Tony, Guo, Zijian
openaire   +4 more sources

Comparative Study about Dimensional Accuracy and Surface Finish of Constant-Breadth Cams Manufactured by FFF and CNC Milling

open access: yesMicromachines, 2023
In this work, the design, manufacture and measurement process of constant-breadth cams is presented. The motion law of the cam was designed by means of Bézier curves and the corresponding design desmodromic constraints.
Enrique E. Zayas-Figueras   +1 more
doaj   +1 more source

EVALUATION OF DIMENSIONAL ACCURACY, FLOW, AND GELATION TIME OF 1.0% CHITOSAN INCORPORATED IRREVERSIBLE HYDROCOLLOID IMPRESSION MATERIAL [PDF]

open access: yesEuromediterranean Biomedical Journal, 2022
In dentistry, irreversible hydrocolloid impression materials are frequently utilised for making both preliminary and final impressions. Dental professionals are more likely to become contaminated by these materials. According to studies, using 1.0% water-
Rama Krishna Alla
doaj   +1 more source

An Experimental Investigation about the Dimensional Accuracy and the Porosity of Copper-Filled PLA Fused Filament Fabrication Parts

open access: yesMetals, 2023
In recent years, metal-filled plastic filaments have begun to be used in fused filament fabrication (FFF) technology. However, the characterization of the parts obtained is still under development.
Irene Buj-Corral, Maurici Sivatte-Adroer
doaj   +1 more source

Investigations on Factors Affecting 3D-Printed Holes Dimensional Accuracy and Repeatability

open access: yesApplied Sciences, 2022
This paper investigates the impact of several factors related to manufacturing, design, and post-processing on the dimensional accuracy of holes built in the additively manufactured parts obtained by material extrusion process (MEX).
Diana Popescu   +4 more
doaj   +1 more source

Transient thermal modelling of substation connectors by means of dimensionality reduction [PDF]

open access: yes, 2017
This paper proposes a simple, fast and accurate simulation approach based on one-dimensional reduction and the application of the finite difference method (FDM) to determine the temperatures rise in substation connectors.
Abomailek Rubio, Basel Carlos   +3 more
core   +2 more sources

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