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Maximilian Renner
Maximilian Renner (4 November 1919 – 20 March 1990) was a German zoologist and chronobiologist. He worked as a researcher and professor at the Ludwig Maximilian University of Munich focusing on "Zeitsinn," or time sense, in bees. His biggest contribution to chronobiology was an experiment in which he explored the concept of “Zeitgedächtnis,” or time memory, by flying bees to different time zones and examining their activity. He continued his research efforts and made various publications on the topic of bee physiology and behavior. Life Maximilian Renner was born in Munich on November 4, 1919, and completed his education there. In 1960 he began teaching at the Ludwig Maximilian University of Munich. While there he researched the chronobiology in animals, with a particular focus on honey bees (Apis mellifica). In 1967 he became an adjunct professor (außerplanmäßiger Professor), then retired in 1985 as a Professor (C2). Even after his retirement, he still regularly unde ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
LP Kremer Phot
LP or lp may stand for: Businesses and organizations *LP, Limited partnership in corporate law or a Limited Partner in a venture capital fund In politics *Labour Party (other), in several countries *Liberal Party, in several countries *Libertarian Party (United States), or a member thereof Schools *Lower Primary school, a subdivision of primary schools in certain places *Lorne Park Secondary School, a high school in Mississauga, Ontario, Canada Other businesses and organizations *LAN Perú, an airline based in Lima, Peru (IATA code LP) *Louisiana-Pacific, a manufacturer of building materials *Lowercase people, an organization founded by rock band Switchfoot *Ladakh Police, police agency of Ladakh, India Science and technology Computing and mathematics *lp (Unix), command for printing documents *Lp space, ''L''''p'' space *LPMud, a type of virtual world server software created in 1989 *LP or lp, the device name for a Printer (computing), printer in some computer operat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Colin Pittendrigh
Colin Stephenson Pittendrigh (October 13, 1918 – March 19, 1996) "Colin Pittendrigh, 'Father of biological clock,' dies at 77", March 25, 1996, accessed April 9, 2011. was a British-born who spent most of his adult life in the United States. Pittendrigh is regarded as the "father of the biological clock," and founded the modern field of alongside and Erwin Bünnin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Willy Kükenthal
Willy Georg Kükenthal (August 4, 1861, Weißenfels – August 20, 1922, Berlin) was a German zoologist. He was the older brother of botanist and theologian Georg Kükenthal (1864–1955). Kükenthal specialized in the Octocorallia and on marine mammals. He edited, along with Thilo Krumbach, a landmark series of eight volumes in the ''Handbuch der Zoologie'' series which extensively reviewed and compiled the state of zoological knowledge of the time. Life Kükenthal was born to August Kükenthal (1826-1910) and Minna Wimmer (died 1917) and went to school at Weißenfels and Halle before joining the University of Munich where he studied mineralogy and later zoology at Jena, earning his doctorate at the latter institution in 1884 for studying lymphoid cells in annelids. He travelled around the North Sea with B. Weißenborn and joined the zoology department Jena under Ernst Haeckel in 1885. In 1886, with support from the Senckenberg Natural History Society, he participated in an expe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beekeeping
Beekeeping (or apiculture) is the maintenance of bee colonies, commonly in man-made beehives. Honey bees in the genus '' Apis'' are the most-commonly-kept species but other honey-producing bees such as ''Melipona'' stingless bees are also kept. Beekeepers (or apiarists) keep bees to collect honey and other products of the hive: beeswax, propolis, bee pollen, and royal jelly. Pollination of crops, raising queens, and production of package bees for sale are other sources of beekeeping income. Bee hives are kept in an apiary or "bee yard". The keeping of bees by humans, primarily for honey production, began around 10,000 years ago. Georgia is known as the "cradle of beekeeping" and the oldest honey ever found comes from that country. The 5,500-year-old honey was unearthed from the grave of a noblewoman during archaeological excavations in 2003 near the town Borjomi. Ceramic jars found in the grave contained several types of honey, including linden and flower honey. Domestication of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Circadian Rhythm
A circadian rhythm (), or circadian cycle, is a natural, internal process that regulates the sleep–wake cycle and repeats roughly every 24 hours. It can refer to any process that originates within an organism (i.e., Endogeny (biology), endogenous) and responds to the environment (Entrainment (chronobiology), entrained by the environment). These 24-hour rhythms are driven by a circadian clock, and they have been widely observed in animals, plants, fungi and cyanobacteria. The term ''circadian'' comes from the Latin ''wikt:circa#Latin, circa'', meaning "approximately", and ''dies'', meaning "day". Processes with 24-hour cycles are more generally called diurnal rhythms; diurnal rhythms should not be called circadian rhythms unless they can be confirmed as endogenous, and not environmental. Although circadian rhythms are endogenous, they are adjusted to the local environment by external cues called zeitgebers (German for "time givers"), which include light, temperature and redox cy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Entrainment (chronobiology)
In the study of chronobiology, entrainment occurs when rhythmic physiological or behavioral events match their period to that of an environmental oscillation. It is ultimately the interaction between circadian rhythms and the environment. A central example is the entrainment of circadian rhythms to the daily light–dark cycle, which ultimately is determined by the Earth's rotation. Exposure to certain environmental stimuli will cue a phase shift, and abrupt change in the timing of the rhythm. Entrainment helps organisms maintain an adaptive phase relationship with the environment as well as prevent drifting of a free running rhythm. This stable phase relationship achieved is thought to be the main function of entrainment. There are two general modes of entrainment: phasic and continuous. The phasic mode is when there is limited interaction with the environment to "reset" the clock every day by the amount equal to the "error", which is the difference between the environmental cycle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drosophila
''Drosophila'' () is a genus of flies, belonging to the family Drosophilidae, whose members are often called "small fruit flies" or (less frequently) pomace flies, vinegar flies, or wine flies, a reference to the characteristic of many species to linger around overripe or rotting fruit. They should not be confused with the Tephritidae, a related family, which are also called fruit flies (sometimes referred to as "true fruit flies"); tephritids feed primarily on unripe or ripe fruit, with many species being regarded as destructive agricultural pests, especially the Mediterranean fruit fly. One species of ''Drosophila'' in particular, ''D. melanogaster'', has been heavily used in research in genetics and is a common model organism in developmental biology. The terms "fruit fly" and "''Drosophila''" are often used synonymously with ''D. melanogaster'' in modern biological literature. The entire genus, however, contains more than 1,500 species and is very diverse in appearance, be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biological Clocks
A circadian rhythm (), or circadian cycle, is a natural, internal process that regulates the sleep–wake cycle and repeats roughly every 24 hours. It can refer to any process that originates within an organism (i.e., endogenous) and responds to the environment ( entrained by the environment). These 24-hour rhythms are driven by a circadian clock, and they have been widely observed in animals, plants, fungi and cyanobacteria. The term ''circadian'' comes from the Latin ''circa'', meaning "approximately", and ''dies'', meaning "day". Processes with 24-hour cycles are more generally called diurnal rhythms; diurnal rhythms should not be called circadian rhythms unless they can be confirmed as endogenous, and not environmental. Although circadian rhythms are endogenous, they are adjusted to the local environment by external cues called zeitgebers (German for "time givers"), which include light, temperature and redox cycles. In clinical settings, an abnormal circadian rhythm in huma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mandibular Gland
The paired submandibular glands (historically known as submaxillary glands) are major salivary glands located beneath the floor of the mouth. They each weigh about 15 grams and contribute some 60–67% of unstimulated saliva secretion; on stimulation their contribution decreases in proportion as the parotid secretion rises to 50%. The average length of the normal human submandibular salivary gland is approximately 27mm, while the average width is approximately 14.3mm. Structure Lying superior to the digastric muscles, each submandibular gland is divided into superficial and deep lobes, which are separated by the mylohyoid muscle: * The superficial lobe comprises most of the gland, with the mylohyoid muscle runs under it * The deep lobe is the smaller part Secretions are delivered into the submandibular duct on the deep portion after which they hook around the posterior edge of the mylohyoid muscle and proceed on the superior surface laterally. The excretory ducts are then cross ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zoologist
Zoology ()The pronunciation of zoology as is usually regarded as nonstandard, though it is not uncommon. is the branch of biology that studies the Animal, animal kingdom, including the anatomy, structure, embryology, evolution, Biological classification, classification, Ethology, habits, and distribution of all animals, both living and extinction, extinct, and how they interact with their ecosystems. The term is derived from Ancient Greek , ('animal'), and , ('knowledge', 'study'). Although humans have always been interested in the natural history of the animals they saw around them, and made use of this knowledge to domesticate certain species, the formal study of zoology can be said to have originated with Aristotle. He viewed animals as living organisms, studied their structure and development, and considered their adaptations to their surroundings and the function of their parts. The Greek physician Galen studied human anatomy and was one of the greatest surgeons of the a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
