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Heart rate variability (HRV) is the physiological phenomenon of variation in the time interval between heartbeats. It is measured by the variation in the beat-to-beat interval. Other terms used include "cycle length variability", "R–R variability" (where R is a point corresponding to the peak of the QRS complex of the ECG wave; and R–R is ...
Human body weight. A person's waist-to-height ratio – occasionally written WHtR[a] – or called waist-to-stature ratio (WSR), is defined as their waist circumference divided by their height, both measured in the same units. It is used as a predictor of obesity-related cardiovascular disease. The WHtR is a measure of the distribution of body fat.
A thyristor (/ θaɪˈrɪstər /) is a solid-state semiconductor device which can be thought of as being a highly robust and switchable diode, allowing the passage of current in one direction but not the other, often under control of a gate electrode, that is used in high power applications like inverters and radar generators.
Hypertension, also known as high blood pressure, is a long-term medical condition in which the blood pressure in the arteries is persistently elevated. [ 11 ] High blood pressure usually does not cause symptoms itself. [ 1 ] It is, however, a major risk factor for stroke, coronary artery disease, heart failure, atrial fibrillation, peripheral ...
They were all over 18 years old at the time of the investigation. Regardless of age, urbanity or rurality, ethnic groups, or provinces, the average height of males was 169.60 cm, while the average height of females was 158.88 cm. The gender difference was significant (P< 0.000). ^ Meisel, Adolfo & Vega, Margarita.
Human height or stature is the distance from the bottom of the feet to the top of the head in a human body, standing erect. It is measured using a stadiometer, [ 1 ] in centimetres when using the metric system or SI system, [ 2 ][ 3 ] or feet and inches when using United States customary units or the imperial system. [ 4 ][ 5 ] In the early ...
Reference 2D21 tube is 2 ⅛ inches tall (54 mm). A thyratron is a type of gas-filled tube used as a high-power electrical switch and controlled rectifier. Thyratrons can handle much greater currents than similar hard-vacuum tubes. Electron multiplication occurs when the gas becomes ionized, producing a phenomenon known as a Townsend discharge.
Yaroslava Oleksiivna Mahuchikh (Ukrainian: Ярослава Олексіївна Магучіх; pronounced [jarosˈɫawa maˈɦutʃix]; born 19 September 2001) is a Ukrainian high jumper and women's high jump world record holder. She won the gold medal at the 2024 Summer Olympics, 2023 World Championships and 2022 World Indoor Championships.