Results 11 to 20 of about 28,809 (247)

The Effect of TiN-, TiCN-, TiAlN-, and TiSiN Coated Tools on the Surface Defects and Geometric Tolerances of Holes in Multi-Spindle Drilling of Al2024 Alloy

open access: yesMetals, 2021
The integrity of machined holes depends on many parameters, some of which are related to the cutting tool (geometry, coating, material). Other influential parameters are related to the machining process variables (spindle speed, feed rate, workpiece ...
Muhammad Aamir   +6 more
doaj   +1 more source

End-of-Life Photovoltaic Modules

open access: yesEnergies, 2022
More than 78 million tons of photovoltaic modules (PVMs) will reach their end of life (EOL) by 2050. If they are not responsibly managed, they can (a) pollute our terrestrial ecosystem, (b) indirectly encourage continuous mining and extraction of Earth’s
Jovan Tan   +2 more
doaj   +1 more source

The Strategies for Security-Oriented Development of Enterprises [PDF]

open access: yesProblemi Ekonomiki, 2023
The objective need to create security conditions for the sustainable development of domestic enterprises is caused by transformational changes at the global and international levels, crises, growing instability and uncertainty of events, and the ongoing ...
Makarenko Mykhailo M., Shkreben Roman P.
doaj   +1 more source

Influence of essential oil: cyclodextrin ratio and stirring rate on physicochemical characteristics of orange essential oil: β-cyclodextrin microparticles

open access: yesCyTA - Journal of Food, 2023
Some encapsulation process and formulation parameters influence on several physicochemical properties of the encapsulated products. In this study, the influence of the OEO:β-CD ratio and stirring speed on the total oil, surface oil, oil retention ...
Diana Nolazco–Cama   +4 more
doaj   +1 more source

Circular Billiard

open access: yesSIAM Review, 1998
The problem of a perfectly inelastic billiard on a circular table with exactly one permitted bounce is analyzed. Both geometric and analytic aspects of the solution are outlined. Degenerate points on the billiard table are identified and discussed. The results are applied to an optical experiment which can be performed in any classroom.
Drexler, M., Gander, Martin Jakob
openaire   +4 more sources

Progress toward Circularity of Polyester and Cotton Textiles

open access: yesSustainable Chemistry, 2022
Millions of tons of textile waste are landfilled or incinerated in the world every year due to insufficient recycle value streams and the complex composition of textile end products.
Siyan Wang, Sonja Salmon
doaj   +1 more source

Should Recovery Strategies Be Reuse or Recycling Based? A Case Study on Discarded Electronics in Melbourne, Australia

open access: yesLogistics
Background: Optimizing reverse chains is more difficult than forward linear supply chains. Careful consideration should be given to recovery strategies to optimize product reuse as well as recycling.
Hans Ronald Krikke   +2 more
doaj   +1 more source

Replaying the circular economy orchestra: The echoes of R and the symphony of I

open access: yesJournal of Integrative Environmental Sciences
The Circular Economy (CE) is a pivotal pathway to achieving sustainability. This article critically reviews circularity strategies (Rs) and emphasizes the importance of not loosely categorizing any word starting with R as a new circularity strategy.
Pouya Samani
doaj   +1 more source

A Protocol for the Creation of Useful Geometric Shape Metrics Illustrated with a Newly Derived Geometric Measure of Leaf Circularity

open access: yesApplications in Plant Sciences, 2014
Premise of the study: I present a protocol for creating geometric leaf shape metrics to facilitate widespread application of geometric morphometric methods to leaf shape measurement.
Jonathan D. Krieger
doaj   +1 more source

A Method for Synthesizing Iron Silicate Slags to Evaluate Their Performance as Supplementary Cementitious Materials

open access: yesApplied Sciences, 2023
Utilizing iron silicate copper slag as supplementary cementitious material (SCM) is a means to improve resource efficiency and lower the carbon dioxide emissions from cement production.
Anton Andersson   +4 more
doaj   +1 more source

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