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Related Concept Videos

Design Example: Sustainability in Concrete Building01:26

Design Example: Sustainability in Concrete Building

As the construction industry moves towards more eco-friendly practices, concrete's adaptability and its ability to incorporate sustainable features make it a key material in the drive towards greener building solutions.
There are multiple approaches to achieve sustainability in a commercial concrete building. For instance, construct a concrete parking area under the building, utilizing pervious concrete paver blocks in open areas to facilitate rainwater collection through an underground cistern.
Conservation of Energy: Application01:12

Conservation of Energy: Application

When solving problems using the energy conservation law, the object (system) to be studied should first be identified. Often, in applications of energy conservation, we study more than one body at the same time. Second, identify all forces acting on the object and determine whether each force doing work is conservative. If a non-conservative force (e.g., friction) is doing work, then mechanical energy is not conserved. The system must then be analyzed with non-conservative work. Third, for...
Efficiency of The Carnot Cycle01:16

Efficiency of The Carnot Cycle

The hypothetical Carnot cycle consists of an ideal gas subjected to two isothermal and two adiabatic processes. Since the internal energy of an ideal gas depends only on its temperature, which is the same before and after the completion of the Carnot cycle, there is no change in its internal energy. Hence, using the first law of thermodynamics, the total heat exchanged by the ideal gas equals the total work done. Thus, we can quantify the efficiency of the Carnot cycle via the heat exchanged...
Power01:08

Power

The concept of work involves force and displacement; meanwhile, the work-energy theorem relates the net work done on a body to the difference in its kinetic energy, calculated between two points on its trajectory. While none of these quantities or relations involves time explicitly, we know that the time available to accomplish work is often just as important as the amount of work itself. For example, sprinters in a race may have achieved the same velocity at the finish, therefore,...
Conservation of AC Power01:15

Conservation of AC Power

The principle of power preservation is applicable to both ac and dc circuits. This principle, when applied to AC power, asserts that the complex, real, and reactive powers produced by the source are equal to the total complex, real, and reactive powers absorbed by the loads. When two load impedances are connected in parallel to an ac source V, the complex power provided by the source can be calculated using the relation
Conservation of Energy00:54

Conservation of Energy

The terms 'conserved quantity' and 'conservation law' have specific scientific meanings in physics, which differ from the meanings associated with their everyday use. For example, in everyday usage, water could be conserved by not using it, by using less of it, or by re-using it. However, in scientific terms, a conserved quantity of a system stays constant, changes by a definite amount that is transferred to other systems, and is converted into other forms of that quantity. In the scientific...

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Related Experiment Video

Updated: May 14, 2026

The Effect of Construction and Demolition Waste Plastic Fractions on Wood-Polymer Composite Properties
09:06

The Effect of Construction and Demolition Waste Plastic Fractions on Wood-Polymer Composite Properties

Published on: June 7, 2020

Resource convergence and resource power: towards new concepts for material efficiency.

Petri Vasara1, Juulia Rouhiainen, Hannele Lehtinen

  • 1Pöyry Management Consulting Oy, Jaakonkatu 3, Vantaa 01620, Finland. petri.vasara@poyry.com

Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
|January 30, 2013
PubMed
Summary

Material efficiency is key to global sustainability. This study introduces resource convergence, a framework to understand complex resource linkages and master material efficiency for sustainability challenges.

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Preparation and Evaluation of Hybrid Composites of Chemical Fuel and Multi-walled Carbon Nanotubes in the Study of Thermopower Waves
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Preparation and Evaluation of Hybrid Composites of Chemical Fuel and Multi-walled Carbon Nanotubes in the Study of Thermopower Waves

Published on: April 10, 2015

Area of Science:

  • Sustainability Science
  • Resource Management

Background:

  • Global sustainability challenges are interconnected with material usage.
  • Understanding resource linkages is crucial for effective decision-making.

Purpose of the Study:

  • Introduce the concept of resource convergence.
  • Develop and demonstrate a method for analyzing resource interdependencies.
  • Provide a framework for mastering complexity in resource management.

Main Methods:

  • Text mining of scientific literature to identify resource convergence patterns.
  • Development and application of the Resource Power Index method.
  • Visual literature review to illustrate resource interdependencies.

Main Results:

  • Resource convergence emerges from diverse, unrelated research texts.
  • The Resource Power Index quantifies resource influence in decision-making.
  • A framework for understanding and managing complex resource interactions is presented.

Conclusions:

  • Mastering complexity and resource convergence is central to achieving material efficiency.
  • The proposed framework offers a direction for future research in sustainability.
  • Effective resource management requires understanding interdependencies and power dynamics.