Search results
Results from the WOW.Com Content Network
The 1992 study found the maximum safe dietary selenium intake to be approximately 800 micrograms per day (15 micrograms per kilogram body weight), but suggested 400 micrograms per day to avoid creating an imbalance of nutrients in the diet and to accord with data from other countries. [137]
A single dose of LSD is typically between 40 and 500 micrograms—an amount roughly equal to one-tenth the mass of a grain of sand. Threshold effects can be felt with as little as 25 micrograms of LSD. [143] [144] The practice of using sub-threshold doses is called microdosing. [145]
Platinum finds use in jewellery, usually as a 90–95% alloy, due to its inertness. It is used for this purpose for its prestige and inherent bullion value. Jewellery trade publications advise jewellers to present minute surface scratches (which they term patina) as a desirable feature in an attempt to enhance value of platinum products. [80] [81]
The possible nutritional value of chromium(III) is unproven. [ 101 ] [ 102 ] Although chromium is regarded as a trace element and dietary mineral , its suspected roles in the action of insulin – a hormone that mediates the metabolism and storage of carbohydrate, fat, and protein – have not been adequately established.
The Centers for Disease Control and Prevention (US) has set the upper limit for blood lead for adults at 10 μg/dL (10 μg/100 g) and for children at 3.5 μg/dL; [8] before October 2021 the limit was 5 μg/dL. [9] [10] Elevated lead may also be detected by changes in red blood cells or dense lines in the bones of children as seen on X-ray. [4]
Starch from maize can be made into plastics, fabrics, adhesives, and many other chemical products. [114] Corn steep liquor , a plentiful watery byproduct of maize wet milling process, is used in the biochemical industry and research as a culture medium to grow microorganisms .
Barranquilla (Latin American Spanish pronunciation: [baraŋˈkiʝa] ⓘ) is the capital district of the Atlántico department in Colombia.It is located near the Caribbean Sea and is the largest city and third port [5] in the Caribbean coast region; as of 2018, it had a population of 1,206,319 [6] [2] making it Colombia's fourth-most populous city after Bogotá, Medellín, and Cali.
Arsenic is a ubiquitous naturally occurring chemical element, and the 20th most common element on Earth. [13] Arsenic levels in the groundwater vary from around 0.5 parts per billion to 5000 parts per billion, depending on an area's geologic features, and possible presence on industrial waste.