Results 21 to 30 of about 16,049,929 (301)

In vitro comparison of the color degradation of two computer-aided design/computer-aided manufacturing provisional materials: A 12-month simulation

open access: yesThe Journal of Indian Prosthodontic Society, 2023
Aim: This study evaluated the color aging of two computer aided design/computer aided manufacturing (CAD/CAM) provisional materials of different compositions (polymethyl methacrylate and composite resin) after exposure to thermal aging and immersion in ...
Suzanna Maria Sayegh   +3 more
doaj   +1 more source

Latest Developments in Industrial Hybrid Machine Tools that Combine Additive and Subtractive Operations [PDF]

open access: yes, 2018
Hybrid machine tools combining additive and subtractive processes have arisen as a solution to increasing manufacture requirements, boosting the potentials of both technologies, while compensating and minimizing their limitations.
Arrizubieta Arrate, Jon Iñaki   +4 more
core   +2 more sources

Corrosion of Carbon Steel in Artificial Geothermal Brine: Influence of Carbon Dioxide at 70 °C and 150 °C [PDF]

open access: yes, 2019
This study focuses on the corrosion mechanism of carbon steel exposed to an artificial geothermal brine influenced by carbon dioxide (CO2) gas. The tested brine simulates a geothermal source in Sibayak, Indonesia, containing 1500 mg/L of Cl−, 20 mg/L of ...
Aristia, Gabriela   +2 more
core   +1 more source

Assessment of Two Methods of Enhancing Thermal Mass Performance of Concrete Through the Incorporation of Phase-Change Materials

open access: yesJournal of Sustainable Design and Applied Research in Innovative Engineering of the Built Environment, 2016
According to the IEA Technology Roadmap on Energy Efficient Building Envelopes, buildings are responsible for more than one third of global energy consumption, with space heating and cooling consuming 33% of this energy, and increasing to 50% in cold ...
Dervilla Niall   +2 more
doaj   +1 more source

Nano-hydroxyapatite: A driving force for bone tissue engineering

open access: yesJournal of Pharmacy and Bioallied Sciences, 2021
Bone is an amazing nanocomposite tissue made of both organic (primarily collagen) and inorganic (primarily nano-hydroxyapatite [n-HA]) elements. Bone grafting is a widely used surgical technique in dental and orthopedic surgeries to enhance bone ...
M Prem Blaisie Rajula   +4 more
doaj   +1 more source

Photocatalytic Activity and Mechanical Properties of Cements Modified with TiO2/N [PDF]

open access: yes, 2019
In this paper, studies of the mechanical properties and photocatalytic activity of new photoactive cement mortars are presented. The new building materials were obtained by the addition of 1, 3, and 5 wt % (based on the cement content) of nitrogen ...
Janus, Magdalena   +5 more
core   +1 more source

Development of Online Learning System for Software Laboratory Center in Bina Nusantara University

open access: yesComTech, 2017
The purpose of this research was to produce a learning management system that could provide teaching materials and assessment tools for students so that they could improve their abilities and assess themselves.
Dennise Adrianto   +3 more
doaj   +1 more source

Natural Materials – Nature of Materials [PDF]

open access: yesProceedings of DRS, 2018
The material world is recently and very rapidly changing; altering the relationships between materials – the substance of everyday life – and designers – the professionals who are responsible for transforming materials into daily life objects. This vibrant context prompts us to explore and attempt to conceptualise these fluid relationships and review ...
Tonuk, D, Fisher, T
openaire   +1 more source

GLOBAL LOGISTICS INFORMATION - KEY INGREDIENT [PDF]

open access: yesAnalele Universităţii Constantin Brâncuşi din Târgu Jiu : Seria Economie, 2009
When we use the term "Global", we talk about imports from Asia to the U.S.; we talk about exports to Europe; we talk about movements within North America, and products, components and finished goods.
Cecilia Irina RĂBONŢU   +1 more
doaj  

Analytic materials [PDF]

open access: yesProceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2016
The theory of inhomogeneous analytic materials is developed. These are materials where the coefficients entering the equations involve analytic functions. Three types of analytic materials are identified. The first two types involve an integerp. Ifptakes its maximum value, then we have a complete analytic material.
openaire   +3 more sources

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