Wikipedia:Reference desk/Archives/Science/2024 July 8

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July 8

Japanese basal temperature unit OV

The dictionary definition of OV at Wiktionary (also ㍵) says:

• (ōbui)

1. unit of basal body temperature, 0 being 35.5 °C and 50 being 38 °C, used for fertility awareness

However Wiktionary has no references. I cannot find references elsewhere. Maybe they exist but searching for "OV", especially when including "ovulation" gives many false positives. Can you find a reference for the existence and meaning of this unit, preferably in a language I can understand, such as English or Spanish? I guess most references are in Japanese, that I don't understand. -- Error (talk) 10:44, 8 July 2024 (UTC)

"*Women's thermometers use the "OV value" so that slight changes in body temperature can be read."

"This is a value that divides the range of 35.5 to 38.0°C into 50 equal parts."

Original source: [1]

Translated source:[2] OptoFidelty (talk) 01:06, 10 July 2024 (UTC)

It was rejected as promotional material. --Error (talk) 23:46, 10 July 2024 (UTC)

Hillock of His/Hiss

I learned of the "hillocks of Hiss" from the wikipedia article on Tubercle Tubercle#Ears

From looking at other sources, I see they're also spelt "hillocks of his" -- What I cannot find out, and what I'm asking y'all is, *why* they are called 'Hiss/His' are they named for a person?140.147.160.225 (talk) 12:02, 8 July 2024 (UTC)

Presumably named for Wilhelm His Sr. or Wilhelm His Jr.. --Amble (talk) 16:47, 8 July 2024 (UTC)

In a book on the pathophysiology of orbital diseases I found this sentence:^[3]

In 1868, Hiss demonstrated that shortly after gastrulation, a different type of cell was formed between the ectoderm and the paraxial mesoderm on both sides of the neural tube.⁹

I bet this is the same His(s) as that of the hillocks. Given their bios, this would then be His Sr. The reference 9 is to the textbook Human Embryology, for which the restrictive snippet view fails to reveal more, but the 1868 publication is almost certainly Untersuchungen über die erste Anlage des Wirbelthierleibes.  --Lambiam 17:23, 8 July 2024 (UTC)

thanks so much Lambiam and Amble! -- any chance you could add a footnote or ref to the Tubercle article so future folks won't be as stymied as I was? 140.147.160.225 (talk) 12:04, 9 July 2024 (UTC)

I found this further confirmation:

The most important theory arose in 1855 when Wilhelm His named six cartilaginous hillocks as the original auricular structures.

Source: Jack Davis (1997). Otoplasty. Springer, p. 24. ISBN 978-1-4612-7484-1.

You should be able to add a footnote (with ref) to the Tubercle article yourself.  --Lambiam 14:36, 9 July 2024 (UTC)

Now done, also added to the His Sr article. Alansplodge (talk) 13:24, 10 July 2024 (UTC)