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Lumber Defects

Lumber Defects

Lumber defects, which can affect both the appearance and structural integrity of wood, include a variety of growth and manufacturing flaws. Growth defects such as knots and knotholes occur where branches were once attached to the tree trunk, with knotholes forming when these knots fall out. Other natural defects include decay and insect damage, which compromise the wood's strength and durability.
Shakes are minor fractures that run along or across the wood's annual rings, while wane is...

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Related Experiment Video

Updated: Jan 15, 2026

Mechanical Separation and Protein Solubilization of the Outer and Inner Perivitelline Sublayers from Hen's Eggs

Mechanical Separation and Protein Solubilization of the Outer and Inner Perivitelline Sublayers from Hen's Eggs

Published on: January 27, 2021

Has the golden egg lost its luster?

Christine P Stewart¹

¹Institute for Global Nutrition, University of California Davis, Davis, CA, United States.

The American Journal of Clinical Nutrition

|October 15, 2025

Summary

No abstract available in PubMed .

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