3 results match your criteria: "Building and Construction"

Article Synopsis
  • Breakfast is crucial for students' academic performance, with a study involving 648 Australian high school students exploring the relationship between breakfast consumption, quality, and academic motivation.
  • The research showed that consuming breakfast was linked to higher adaptive motivation, while the quality of the breakfast was associated with lower maladaptive motivation, both influencing students' achievements in a science test.
  • Additionally, the quality of breakfast moderated its effects, as those who ate healthier options displayed greater adaptive motivation and improved academic performance, highlighting the importance of promoting better breakfast habits in educational settings.
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The reasons for the start and end of the induction period of cement hydration remain topic of controversy. One long-standing hypothesis is that a thin metastable hydrate forming on the surface of cement grains significantly reduces the particle dissolution rate; the eventual disappearance of this layer re-establishes higher dissolution rates at the beginning of the acceleration period. However, the importance, or even the existence, of this metastable layer has been questioned because it cannot be directly detected in most experiments.

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Disagreements about the mechanisms of cement hydration remain despite the fact that portland cement has been studied extensively for over 100 years. One reason for this is that direct observation of the change in microstructure and chemistry are challenging for many experimental techniques. This paper presents results from synchrotron nano X-ray tomography and fluorescence imaging.

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