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Microvolt T wave alternans is a variant of T wave alternans that detects T wave alternans signals as small as one-millionth of a volt. Microvolt T wave alternans is defined as an alternation in the morphology of the T wave in an every other beat or AB-AB pattern. It has long been associated with ventricular arrhythmias and sudden death.
A basic distinction is between rhyme schemes that apply to a single stanza, and those that continue their pattern throughout an entire poem (see chain rhyme). There are also more elaborate related forms, like the sestina – which requires repetition of exact words in a complex pattern. Rhyming is not a mandatory feature of poetry; a four-line ...
The pattern of standard and boldface letters is: ba aabbaa b aaabaaa abba aaaaaa bb aaa bbabaabba ba aaaaaaaa ab b baaab bb babb ab baa abbaabb 'b' bb 'b'. This decodes in groups of five as baaab(S) baaba(T) aabaa(E) aabba(G) aaaaa(A) abbaa(N) abbab(O) aabba(G) baaaa(R) aaaaa(A) abbba(P) aabbb(H) babba(Y) bbaaa bbaab bbbbb
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The pattern closes if the frequencies are whole number ratios i.e. a / b is rational. Another simple Lissajous figure is the parabola ( b / a = 2, δ = π / 4 ). Again a small shift of one frequency from the ratio 2 will result in the trace not closing but performing multiple loops successively shifted only closing if the ...
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2. Darning also refers to any of several needlework techniques that are worked using darning stitches, including pattern darning (a type of embroidery), net darning or filet lace, and needle weaving, a drawn thread work technique. [1] darning mushroom A darning mushroom is a tool used for darning clothes, particularly socks. The sock can be ...