Peter Paul Montgomery Buttigieg ( BOO-tij-əj; born January 19, 1982) is an American politician and former naval officer who is serving as the 19th United States Secretary of Transportation. A member of the Democratic Party, he served as the 32nd mayor of South Bend, Indiana, from 2012 to 2020, which earned him the nickname "Mayor Pete". Buttigieg is a graduate of Harvard College and the University of Oxford, attending the latter on a Rhodes Scholarship. In 2007, he began three years of work at the management consulting firm McKinsey & Company. From 2009 to 2017, he was an intelligence officer...

Tubers are a type of enlarged structure that plants use as storage organs for nutrients, derived from stems or roots. Tubers help plants perennate (survive winter or dry months), provide energy and nutrients, and are a means of asexual reproduction. Stem tubers manifest as thickened rhizomes (underground stems) or stolons (horizontal connections between organisms); examples include the potato and yam. The term root tuber describes modified lateral roots, as in sweet potatoes, cassava, and dahlias. == Terminology == The term originates from the Latin tuber, meaning 'lump, bump, or swelling'. Some...

Xanthine ( or , from Ancient Greek ξανθός xanthós 'yellow' for its yellowish-white appearance; archaically xanthic acid; systematic name 3,7-dihydropurine-2,6-dione) is a purine base found in most human body tissues and fluids, as well as in other organisms. Several stimulants are derived from xanthine, including caffeine, theophylline, and theobromine. Xanthine is a product on the pathway of purine degradation. It is created from guanine by guanine deaminase. It is created from hypoxanthine by xanthine oxidoreductase. It is also created from xanthosine by purine nucleoside phosphorylase. Xanthine...

Substituted amphetamines are a class of compounds based upon the amphetamine structure; it includes all derivative compounds which are formed by replacing, or substituting, one or more hydrogen atoms in the amphetamine core structure with substituents. The compounds in this class span a variety of pharmacological subclasses, including stimulants, empathogens, and hallucinogens, among others. Examples of substituted amphetamines are amphetamine (itself), methamphetamine, ephedrine, cathinone, phentermine, mephentermine, tranylcypromine, bupropion, methoxyphenamine, selegiline, amfepramone (d...

Separation of duties (SoD), also known as segregation of duties, is the concept of having more than one person required to complete a task. It is an administrative control used by organisations to prevent fraud, sabotage, theft, misuse of information, and other security compromises. In the political realm, it is known as the separation of powers, as can be seen in democracies where the government is separated into three independent branches: a legislature, an executive, and a judiciary. == General description == Separation of duties is a key concept of internal controls. Increased protection from...

The striated frogfish or hairy frogfish (Antennarius striatus) is a species of marine ray-finned fish belonging to the family Antennariidae, the frogfishes. This species is found in the Indo-Pacific and eastern Atlantic Ocean. == Taxonomy == The striated frogfish was first formally described in 1794 as Lophius striatus by the English biologist George Shaw with its type locality given as Tahiti in the Society Islands. Within the genus Antennarius, this species belongs to the striatus species group. The 5th edition of Fishes of the World classifies the genus Antennarius in the family Antennariidae...