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Typically, this is the height of the letter x in the font (the source of the term), as well as the letters v, w, and z. (Curved letters such as a, c, e, m, n, o, r, s, and u tend to exceed the x-height slightly, due to overshoot; i has a dot that tends to go above x-height.)
Poly(ethylene adipate) or PEA is an aliphatic polyester. [3] It is most commonly synthesized from a polycondensation reaction between ethylene glycol and adipic acid. [4] PEA has been studied as it is biodegradable through a variety of mechanisms and also fairly inexpensive compared to other polymers. [5]
A detonator can easily explode aqueous solutions concentrated above 80% by weight, and even 50% solution might prove detonable if tested in bulk. [33] [34] In air, the combustion is rapid and complete: 4 NH 2 OH + O 2 → 2 N 2 + 6 H 2 O. Absent air, pure hydroxylamine requires stronger heating and the detonation does not complete combustion:
Unlike other members of the Corvidae family, the black-billed magpie is dimorphic in size and weight, though there can be overlap between the sexes. Males are, on average, six to nine percent larger and sixteen to twenty-four percent heavier than females, at 167–216 grams (5.9–7.6 oz), an individual wing chord of 205–219 millimeters (8.1 ...
The electrical axis of the heart is the net direction in which the wave of depolarization travels. It is measured using an electrocardiogram (ECG).Normally, this begins at the sinoatrial node (SA node); from here the wave of depolarisation travels down to the apex of the heart.
In the Cartesian coordinate system with coordinates (, …,) and standard basis {, …,}, del is a vector operator whose , …, components are the partial derivative ...
It released 400–1,000 tonnes (390–980 long tons; 440–1,100 short tons) of fuel oil, causing an unprecedented coastal bird crisis and oiling 19,000 adult penguins at the height of the best breeding season on record for this vulnerable species. [56] The oiled birds were brought to an abandoned train repair warehouse in Cape Town to be cared ...
Gecarcinus quadratus in Panama. The carapace of G. quadratus may reach a length of 5 cm (2.0 in). It has a pair of largely purple claws, red-orange legs, and an almost entirely black carapace with a pair of yellow, orange, purple or reddish spots behind the eyes, and an additional pair of whitish spots on the central-lower carapace.