Diurnality is a form of plant and animal behavior characterized by activity during daytime, with a period of sleeping or other inactivity at night. The common adjective used for daytime activity is "diurnal". The timing of activity by an animal depends on a variety of environmental factors such as the temperature, the ability to gather food by sight, the risk of predation, and the time of year. Diurnality is a cycle of activity within a 24-hour period; cyclic activities called circadian rhythms are endogenous cycles not dependent on external cues or environmental factors except for a zeitgeber. Animals active during twilight are crepuscular, those active during the night are nocturnal and animals active at sporadic times during both night and day are cathemeral. Plants that open their flowers during the daytime are described as diurnal, while those that bloom during nighttime are nocturnal. The timing of flower opening is often related to the time at which preferred pollinators are foraging. For example, sunflowers open during the day to attract bees, whereas the night-blooming cereus opens at night to attract large sphinx moths...

Mikal Bridges (born August 30, 1996) is an American professional basketball player for the Brooklyn Nets of the National Basketball Association (NBA). He played college basketball for the Villanova Wildcats, winning national championships in 2016 and 2018. Bridges was selected with the tenth overall pick by the Philadelphia 76ers in the 2018 NBA draft before being traded to the Phoenix Suns on draft night, where he played for five seasons before being traded to the Nets in 2023. Nicknamed “The Warden”, Bridges holds the active record for the most consecutive games played, having not missed a game in his NBA career since being drafted. Early life Bridges is the son of Jack Bridges and Tyneeha Rivers, who gave birth to him at the age of 19 and raised him as a single mother. He grew up in Overbrook, Philadelphia, and nearby neighborhoods. He moved to Malvern, Pennsylvania in middle school. His second cousin is former La Salle player Tyrone Garland. High school career Bridges attended Great Valley High School in Malvern, Pennsylvania, where...

Animal opsins are G-protein-coupled receptors and a group of proteins made light-sensitive via a chromophore, typically retinal. When bound to retinal, opsins become Retinylidene proteins, but are usually still called opsins regardless. Most prominently, they are found in photoreceptor cells of the retina. Five classical groups of opsins are involved in vision, mediating the conversion of a photon of light into an electrochemical signal, the first step in the visual transduction cascade. Another opsin found in the mammalian retina, melanopsin, is involved in circadian rhythms and pupillary reflex but not in vision. Humans have in total nine opsins. Beside vision and light perception, opsins may also sense temperature, sound, or chemicals. Structure and function Animal opsins detect light and are the molecules that allow us to see. Opsins are G-protein-coupled receptors (GPCRs), which are chemoreceptors and have seven transmembrane domains forming a binding pocket for a ligand. The ligand for opsins is the vitamin A-based chromophore 11-cis-retinal, which is covalently bound to a lysine residue in the seventh...

In mathematics, two quantities are in the golden ratio if their ratio is the same as the ratio of their sum to the larger of the two quantities. Expressed algebraically, for quantities a {\displaystyle a} and b {\displaystyle b} with a > b ...

An apple pie is a fruit pie in which the principal filling ingredient is apples. The earliest printed recipe is from England. Apple pie is often served with whipped cream, ice cream ("apple pie à la mode"), or cheddar cheese. It is generally double-crusted, with pastry both above and below the filling; the upper crust may be solid or latticed (woven of crosswise strips). The bottom crust may be baked separately ("blind") to prevent it from getting soggy. Deep-dish apple pie often has a top crust only. Tarte Tatin is baked with the crust on top, but served with it on the bottom. Apple pie is an unofficial symbol of the United States and one of its signature comfort foods. Ingredients Apple pie can be made with many different sorts of apples. The more popular cooking apples include Braeburn, Gala, Cortland, Bramley, Empire, Northern Spy, Granny Smith, and McIntosh. The fruit for the pie can be fresh, canned, or reconstituted from dried apples. Dried or preserved apples were originally substituted only at times when fresh fruit was unavailable. The basic ingredients of the filling are sugar...

El Valle de la Luna (Valley of the Moon) is located 13 kilometres (8 mi) west of San Pedro de Atacama, in the north of Chile in the Cordillera de la Sal, in the Atacama desert. It has various stone and sand formations which have been carved by wind and water. It has an impressive range of color and texture, looking somewhat similar to the surface of the moon. There are also dry lakes where the composition of salt makes a white covering layer of the area. It presents diverse saline outcrops which appear like man-made sculptures. There are also a great variety of caverns. When the sun sinks it defines the landscape while the wind blows among the rocks and the sky passes from pink color to purple and finally black. Valle de la Luna is a part of the Reserva Nacional los Flamencos and was declared a Nature Sanctuary in 1982 for its natural environment and strange lunar landscape, from which its name is derived. The Atacama desert is also considered one of the driest places on earth, as some areas have not received a single drop of rain in hundreds of years. A prototype for a Mars rover was tested there by scientists because of the valley's dry and forbidding terrains....

Glycogen is a multibranched polysaccharide of glucose that serves as a form of energy storage in animals, fungi, and bacteria. It is the main storage form of glucose in the human body. Glycogen functions as one of two forms of energy reserves, glycogen being for short-term and the other form being triglyceride stores in adipose tissue (i.e., body fat) for long-term storage. In humans, glycogen is made and stored primarily in the cells of the liver and skeletal muscle. In the liver, glycogen can make up 5–6% of the organ's fresh weight: the liver of an adult, weighing 1.5 kg, can store roughly 100–120 grams of glycogen. In skeletal muscle, glycogen is found in a low concentration (1–2% of the muscle mass): the skeletal muscle of an adult weighing 70 kg stores roughly 400 grams of glycogen. Small amounts of glycogen are also found in other tissues and cells, including the kidneys, red blood cells, white blood cells, and glial cells in the brain. The uterus also stores glycogen during pregnancy to nourish the embryo.The amount of glycogen stored in the body mostly depends on physical training, basal metabolic rate, and eating habits...

Confessio Amantis ("The Lover's Confession") is a 33,000-line Middle English poem by John Gower, which uses the confession made by an ageing lover to the chaplain of Venus as a frame story for a collection of shorter narrative poems. According to its prologue, it was composed at the request of Richard II. It stands with the works of Chaucer, Langland, and the Pearl poet as one of the great works of late 14th-century English literature. The Index of Middle English Verse shows that in the era before the printing press it was one of the most-often copied manuscripts (59 copies) along with Canterbury Tales (72 copies) and Piers Plowman (63 copies).In genre it is usually considered a poem of consolation, a medieval form inspired by Boethius' Consolation of Philosophy and typified by works such as Pearl. Despite this, it is more usually studied alongside other tale collections with similar structures, such as the Decameron of Boccaccio, and particularly Chaucer's Canterbury Tales, with which the Confessio has several stories in common. Textual history Composition of...

Parchment is a writing material made from specially prepared untanned skins of animals—primarily sheep, calves, and goats. It has been used as a writing medium for over two millennia. Vellum is a finer quality parchment made from the skins of young animals such as lambs and young calves. It may be called animal membrane by libraries and museums that wish to avoid distinguishing between parchment and the more-restricted term vellum (see below). Parchment and vellum Today the term parchment is often used in non-technical contexts to refer to any animal skin, particularly goat, sheep or cow, that has been scraped or dried under tension. The term originally referred only to the skin of sheep and, occasionally, goats. The equivalent material made from calfskin, which was of finer quality, was known as vellum (from the Old French velin or vellin, and ultimately from the Latin vitulus...

Herbal medicine (also herbalism) is the study of pharmacognosy and the use of medicinal plants, which are a basis of traditional medicine. With worldwide research into pharmacology, some herbal medicines have been translated into modern remedies, such as the anti-malarial group of drugs called artemisinin isolated from Artemisia annua, a herb that was known in Chinese medicine to treat fever. There is limited scientific evidence for the safety and efficacy of plants used in 21st century herbalism, which generally does not provide standards for purity or dosage. The scope of herbal medicine commonly includes fungal and bee products, as well as minerals, shells and certain animal parts. Herbal medicine is also called phytomedicine or phytotherapy.Paraherbalism describes alternative and pseudoscientific practices of using unrefined plant or animal extracts as unproven medicines or health-promoting agents. Paraherbalism relies on the belief that preserving various substances from a given source with less processing is safer or more effective than manufactured products, a concept for which there is no evidence. ...