annual ring

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Related to Annual rings: Medullary rays
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Synonyms for annual ring

an annual formation of wood in plants as they grow

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Annual rings for each sample were counted twice, once from the center to the outer bark and once from the outer bark to the center.
Observations for annual rings on scales were conducted by using stereo microscope (Leica MZ75, Germany) and photographs of scales were taken and saved (Leica DFC300 FX).
Aydin and Sen (2002) reported that they observed the most clear annual rings on otoliths in their study on age relationships between right and left sides of the same bony structures of C.
The science of deducing climate from trees, or "dendroclimatology," involves studying the annual rings that can be seen in horizontal cross-sections of the trunk.
Endgrain tiles are created by slicing a tree across the grain to reveal the annual rings inside.
In addition, for some species, the annual rings in adductor muscle scars on the inner shell surface have been found and used for counting and measuring distance between them to estimate age and to investigate bivalve growth rates (Butler & Srewster 1979, Richardson et al.
Such trees are relatively young and in a rapid-growth phase, so the annual rings are wide and easy to measure.
They learn from this display that how they can calculate the age of a tree by counting its annual rings; and also about weather conditions from the gaps between these annual rings.
We counted and measured the annual rings of each cored tree using a compound dissecting microscope and a Velmex stage micrometer attached to a Metronics QC10 digital display and a computer running MeasureJ2X software (VoorTech.
005 mm) under a binocular microscope at 40X to count annual rings, we determined that the individual's oldest living stem was at least 370 years old.
Embedded in the text of annual rings are subtle motifs that are the signatures of events that occur regularly, like E1 Nino, or randomly, like major volcanic eruptions.
The last few cell rows of libriform wood fibres at the border of the annual rings are more strongly lignified than the weakly lignified libriform wood fibres of the early wood.
In his research, Muscheler worked to reconstruct previous changes in solar activity by studying how cosmogenic isotopes, for example of beryllium-10 and carbon-14, have been stored in both ice cores and annual rings in trees.
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