Almost all biology classes touch on the peppered moth. Before the industrial revolution in Britain, the moth was typically white so it could blend in with the bark of birch trees. After decades of heavy pollution, the white trees became grayer, as did much of urban Britain. Scientists were ...
Mountain birch bark shows the strongest anthropogenic impact of the city of Oslo for dust-related elements (Fe, La, Ti) and Sb. Even in mountain birch bark the influence of the city on element concentrations is no longer discernible from the background variation at a distance of less than ...
Liviu H, Floricuța R, Diana C, Alina T and Carmen S. Evaluation of betulin and betulinic acid content in birch bark from different forestry areas of western Carpathians. Not Bot Horti Agrob. 2012; 40:99-105.Holonec L, Ranga F, Crainic D, Truţa A, Socaciu C (2012) Eval- ...
The yellow "balls" growing on your oak leaves are abnormal growths of plant tissue called galls. Galls can also be found on other parts of the tree, including the branches, acorns and bark. Leaf galls may not look attractive, but they won't kill your tree. Types There are two yellow ...
Pine, fir and birch trees, with towering forests speckled by picture-perfect lakes, that make dense forests are beautiful no matter where you are. A vast wilderness with the heavily forested and contains ten thousands picture-perfect lakes, numerous rivers, and extensive areas of marshland is a...
Assessing the function of Palaeolithic hearths is a key research issue that can benefit from the application of experimental archaeology when examining whe
6). Expression kinetics were largely similar in all cell types tested. The US3 short isoform, an early protein, was expressed earlier than the US3 long isoform and UL49.5 in all cell types. Expression of UL49.5 was similar to that of gE, another viral envelope protein, and therefore ...
The moderate-sized particles (100 < r < 300 nm) have the real part of CRI primarily close to n 1.64 and χ 0.045 for coarse particles. Only for smoke generated during the pyrolysis of birch and aspen bark are these characteristics noticeably higher, approaching the estimates obtained for the...
The cambium, a layer composed of highly vacuumized meristematic cells arranged radially, can have the remarkable effect on wood/bark adhesion. Unlike other meristems, cambium is a complex of tissues containing two morphologically distinct cell types: axially elongated spindle cambial cells and isodia...
(Ficus caricaL.) were also investigated. Similar to the Japanese pear, the root bark of Japanese apricots and figs had a higher inhibition rate than the root pith. Like Japanese apricots and figs, it was inferred that the growth inhibitory substances accumulate in the bark of the Japanese ...