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Most T4 is converted to T3 (a more active form) in the target tissues. Calcitonin, produced by the parafollicular cells (C cells) of the thyroid gland in response to rising blood calcium levels, depresses blood calcium levels by inhibiting bone matrix resorption and enhancing calcium deposit in bones. Excessive secretion cause hyperthyroidism ...
The decibel originates from methods used to quantify signal loss in telegraph and telephone circuits. Until the mid-1920s, the unit for loss was miles of standard cable (MSC). 1 MSC corresponded to the loss of power over one mile (approximately 1.6 km) of standard telephone cable at a frequency of 5000 radians per second (795.8 Hz), and matched closely the smallest attenuation detectable to a ...
Studies have shown that the effectiveness of low-fat diets for weight loss is broadly similar to that of low-carbohydrate diets in the long-term. [ 1 ] [ 4 ] A scientific panel for the Endocrine Society stated that "when calorie intake is held constant [...] body-fat accumulation does not appear to be affected by even very pronounced changes in ...
Other severe side effects include liver problems and low blood cell counts. [3] Use during pregnancy may harm the baby. [3] Propylthiouracil is in the antithyroid family of medications. [4] It works by decreasing the amount of thyroid hormone produced by the thyroid gland and blocking the conversion of thyroxine (T4) to triiodothyronine (T3). [3]
A ground temperature of 84 °C (183 °F) was reportedly taken in Port Sudan, Sudan. [29] 22 January 2017: 57.2 °C (135.0 °F) Air Beverly Hills, California United States: According to the Los Angeles Almanac, 57.2 °C (135.0 °F) was the hottest temperature historically recorded among 20 Los Angeles County weather stations.
Blacksmiths judge workpiece temperatures by the colour of the glow. [9] This blacksmith's colourchart stops at the melting temperature of steel. Black-body radiation has a characteristic, continuous frequency spectrum that depends only on the body's temperature, [10] called the Planck spectrum or Planck's law.
The IP code or ingress protection code indicates how well a device is protected against water and dust. It is defined by the International Electrotechnical Commission (IEC) under the international standard IEC 60529 [ 1 ] which classifies and provides a guideline to the degree of protection provided by mechanical casings and electrical ...
Escherichia virus T4 is a species of bacteriophages that infect Escherichia coli bacteria. It is a double-stranded DNA virus in the subfamily Tevenvirinae of the family Straboviridae. T4 is capable of undergoing only a lytic life cycle and not the lysogenic life cycle.