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🔗 Supramolecular Chemistry

🔗 Chemistry

Supramolecular chemistry refers to the branch of chemistry concerning chemical systems composed of a discrete number of molecules. The strength of the forces responsible for spatial organization of the system range from weak intermolecular forces, electrostatic charge, or hydrogen bonding to strong covalent bonding, provided that the electronic coupling strength remains small relative to the energy parameters of the component. While traditional chemistry concentrates on the covalent bond, supramolecular chemistry examines the weaker and reversible non-covalent interactions between molecules. These forces include hydrogen bonding, metal coordination, hydrophobic forces, van der Waals forces, pi–pi interactions and electrostatic effects.

Important concepts advanced by supramolecular chemistry include molecular self-assembly, molecular folding, molecular recognition, host–guest chemistry, mechanically-interlocked molecular architectures, and dynamic covalent chemistry. The study of non-covalent interactions is crucial to understanding many biological processes that rely on these forces for structure and function. Biological systems are often the inspiration for supramolecular research.

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🔗 Mancala

🔗 Board and table games

Mancala is a generic name for a family of two-player turn-based strategy board games played with small stones, beans, or seeds and rows of holes or pits in the earth, a board or other playing surface. The objective is usually to capture all or some set of the opponent's pieces.

Versions of the game date back to the 7th century and evidence suggests the game existed in ancient Egypt. It is among the oldest known games to still be widely played today

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🔗 Dublin Whiskey Fire

🔗 Food and drink 🔗 Ireland

The Dublin whiskey fire took place on 18 June 1875 in the Liberties area of Dublin. It lasted a single night but killed 13 people, and resulted in €6 million worth of damage in whiskey alone (adjusted for inflation). People drank the 6 inches (150 mm) deep river of whiskey that is said to have flowed as far as the Coombe. None of the fatalities suffered during the fire were due to smoke inhalation, burns, or any other form of direct contact with the fire itself; all of them were attributed to alcohol poisoning.

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🔗 Cantu a tenore

🔗 Italy 🔗 Music/Music genres 🔗 Roots music 🔗 A Cappella 🔗 Regional and national music

The cantu a tenòre (Sardinian: su tenòre, su cuncòrdu, su cuntràttu, su cussèrtu, s'agorropamèntu, su cantu a pròa; Italian: canto a tenore) is a style of polyphonic folk singing characteristic of the island of Sardinia (Italy's second largest island), particularly the region of Barbagia, though some other Sardinian sub-regions bear examples of such tradition.

In 2005, UNESCO proclaimed the cantu a tenore to be an example of intangible cultural heritage.

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🔗 Induction of regular languages

In computational learning theory, induction of regular languages refers to the task of learning a formal description (e.g. grammar) of a regular language from a given set of example strings. Although Mark E. Gold has shown that not every regular language can be learned this way (see language identification in the limit), approaches have been investigated for a variety of subclasses. They are sketched in this article. For learning of more general grammars, see Grammar induction.

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🔗 William Goldman, author and screenwriter of “The Princess Bride”, has died

🔗 Biography 🔗 Children's literature 🔗 New York (state) 🔗 Chicago 🔗 Illinois 🔗 Biography/Actors and Filmmakers 🔗 New York (state)/Columbia University 🔗 Screenwriters 🔗 Musical Theatre

William Goldman (August 12, 1931 – November 16, 2018) was an American novelist, playwright, and screenwriter. He first came to prominence in the 1950s as a novelist before turning to screenwriting. He won Academy Awards for his screenplays Butch Cassidy and the Sundance Kid (1969) and All the President's Men (1976). His other works include his thriller novel Marathon Man and comedy/fantasy novel The Princess Bride, both of which he adapted for the film versions.

Author Sean Egan has described Goldman as "one of the late twentieth century's most popular storytellers."

🔗 One Instruction Set Computer

🔗 Computing 🔗 Computer science

A one-instruction set computer (OISC), sometimes called an ultimate reduced instruction set computer (URISC), is an abstract machine that uses only one instruction – obviating the need for a machine language opcode. With a judicious choice for the single instruction and given infinite resources, an OISC is capable of being a universal computer in the same manner as traditional computers that have multiple instructions. OISCs have been recommended as aids in teaching computer architecture and have been used as computational models in structural computing research.

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🔗 Geneva Freeport

🔗 Companies

Geneva Freeport (French: Ports Francs et Entrepôts de Genève SA) is a warehouse complex in Geneva, Switzerland, for the storage of art and other valuables and collectibles. The free port has been described as the "premier place" to store valuable works of art, and users "come for the security and stay for the tax treatment."

It is the oldest and largest freeport facility, and the one with the most artworks, with an estimated art collection value of US$100 billion. According to Jean-René Saillard of the British Fine Art Fund, "It would be probably the best museum in the world if it was a museum."

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🔗 AlphaSmart

🔗 Brands

The AlphaSmart was a brand of portable, battery powered, word-processing keyboards manufactured by NEO Direct, Inc. (formerly Renaissance Learning, Inc, formerly AlphaSmart, Inc., formerly Intelligent Peripheral Devices, Inc.). Originally released in 1993, the first AlphaSmart models were intended for writing on-the-go and could be plugged into a computer to transfer saved written text. The units' portability and long battery life made them valuable to journalists, writers, and students. Later models expanded functionality by spell-checking, running applications, and accessing wireless printers.

The last model, Neo 2, was released in 2007, and production was discontinued by the company in late September 2013, although the company still offers support and software to existing users.

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🔗 Wills of Tadeusz Kościuszko

🔗 United States 🔗 Law 🔗 Poland

Tadeusz Kościuszko (1746–1817), a prominent figure in the history of the Polish-Lithuanian Commonwealth and the American Revolution, made several wills, notably one in 1798 stipulating that the proceeds of his American estate be spent on freeing and educating African-American slaves, including those of his friend Thomas Jefferson, whom he named as the will's executor. Jefferson refused the executorship and the will was beset by legal complications, including the discovery of later wills. Jefferson's refusal incited discussion in the 19th, 20th, and 21st centuries. Kościuszko returned to Europe in 1798 and lived there until his 1817 death in Switzerland. In the 1850s, what was left of the money in Kościuszko's U.S. trust was turned over by the U.S. Supreme Court to his heirs in Europe.

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