In the United States, The Next Generation Science Standards (NGSS, NRC 2013) and The Framework for K12 Science Education (NRC, 2012) identify “energy and matter: flows, cycles, and conservation” as one of seven crosscutting concepts that students can use as organizational tools as they ...
A eutectic phase change material composed of boric and succinic acids demonstrates a transition at around 150 °C, with a record high reversible thermal energy uptake and thermal stability over 1,000 heating–cooling cycles. Saliha Saher
That's a bit of the overall description of the world's ecosystems. Now let's take a look atcycles of matter. The main compartments areoceans, fresh water, land and atmosphere, and they are exchanging materialsall the time. You're already familiar with theupwelling patterns; I've mentioned...
Flows of energy (or of any material such as carbon or nitrogen) through an ecosystem can be used to quantify rates of turnover and passages between elements of the food web. Developing a complete energy-flow model for a rocky shore is a formidable task. For at least the major species, ...
Clock speed (frequency) is the operating speed of a computer or its microprocessor, expressed in cycles per second (megahertz). Consumer devices often dynamically adjust the clock speed of computing devices to achieve more energy proportionality. ...
More specifically, increasing the flows of energy and matter through society, as happens in the process of ongoing industrialization, leads to progressive depletion of available energy and matter or, otherwise stated, to increased entropy. Excessive entropy production is reflected in natural disorders ...
When we think about movements through time, we’re used to thinking about a business cycle—like the dot-com cycle, the financial crisis, or COVID-19, which, of course, was recent and deep. Those cycles are demand cycles, and our pattern ...
Electric energy can be produced also by the exploitation of heat released from hot sources, for instance, the condensation heat of power plants by means of consecutive thermodynamic cycles. The rational use of the cold source (LNG) allows the increment of electrical production and growth of the ...
In reality, a building is functioning in annual cycles and thermal comfort inside must be maintained throughout all seasons, also during summer. It turns out that for certain design solutions, materials selections, and room locations, cooling demand may become a dominating part of an energy ...
Current is induced by molecular dynamics in the polar liquid by the coupling with free charge carriers of graphene in the solid–liquid interface while the polar liquid flows through 3D graphene foams. These free charge carriers are then drawn along the flow direction, inducing currents as those ...