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Mongolian Spot
A Mongolian spot, also known as a slate grey nevus or congenital dermal melanocytosis, is a benign, flat, congenital birthmark with wavy borders and an irregular shape. In 1883, it was described and named after Mongolians by Erwin Bälz, a German anthropologist based in Japan, who erroneously believed it to be most prevalent among his Mongolian patients. It normally disappears three to five years after birth and almost always by puberty. The most common color is blue, although they can be blue-gray, blue-black or deep brown. Cause Mongolian spot is a congenital developmental condition—that is, one existing from birth—exclusively involving the skin. The blue colour is caused by melanocytes, melanin-containing cells, that are usually located in the surface of the skin (the epidermis), but are in the deeper region (the dermis) in the location of the spot. Usually, as multiple spots or one large patch, it covers one or more of the lumbosacral area (lower back), the buttock ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dermatology
Dermatology is the branch of medicine dealing with the Human skin, skin.''Random House Webster's Unabridged Dictionary.'' Random House, Inc. 2001. Page 537. . It is a speciality with both medical and surgical aspects. A List of dermatologists, dermatologist is a specialist medical doctor who manages diseases related to skin. Etymology Attested in English in 1819, the word "dermatology" derives from the Ancient Greek, Greek δέρματος (''dermatos''), genitive of δέρμα (''derma''), "skin" (itself from δέρω ''dero'', "to flay") and -λογία ''wikt:-logia, -logia''. Neo-Latin ''dermatologia'' was coined in 1630, an anatomical term with various French and German uses attested from the 1730s. History In 1708, the first great school of dermatology became a reality at the famous Hôpital Saint-Louis in Paris, and the first textbooks (Willan's, 1798–1808) and atlases (Jean-Louis-Marc Alibert, Alibert's, 1806–1816) appeared in print around the same time.Freedber ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Human Embryogenesis
Human embryonic development or human embryogenesis is the development and formation of the human embryo. It is characterised by the processes of cell division and cellular differentiation of the embryo that occurs during the early stages of development. In biological terms, the development of the human body entails growth from a one-celled zygote to an adult human being. Fertilization occurs when the sperm cell successfully enters and fuses with an egg cell (ovum). The genetic material of the sperm and egg then combine to form the single cell zygote and the germinal stage of development commences. Human embryonic development covers the first eight weeks of development, which have 23 stages, called Carnegie stages. At the beginning of the ninth week, the embryo is termed a fetus (spelled "foetus" in British English). In comparison to the embryo, the fetus has more recognizable external features and a more complete set of developing organs. Human embryology is the study of this ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Central Alaskan Yup'ik Language
Central is an adjective usually referring to being in the center of some place or (mathematical) object. Central may also refer to: Directions and generalised locations * Central Africa, a region in the centre of Africa continent, also known as Middle Africa * Central America, a region in the centre of America continent * Central Asia, a region in the centre of Eurasian continent * Central Australia, a region of the Australian continent * Central Belt, an area in the centre of Scotland * Central Europe, a region of the European continent * Central London, the centre of London * Central Region (other) * Central United States, a region of the United States of America Specific locations Countries * Central African Republic, a country in Africa States and provinces * Blue Nile (state) or Central, a state in Sudan * Central Department, Paraguay * Central Province (Kenya) * Central Province (Papua New Guinea) * Central Province (Solomon Islands) * Central Provinc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bethel, Alaska
Bethel () is a city in the U.S. state of Alaska, located on the Kuskokwim River approximately from where the river flows into Kuskokwim Bay. It is the largest community in western Alaska and in the Unorganized Borough and the List of cities in Alaska, eighth-largest in the state. Bethel has a population of 6,325 as of the 2020 United States census, 2020 census, up from 6,080 in 2010. Annual events in Bethel include the Kuskokwim 300 dogsled race; Camai, a Yup'ik dance festival held each spring; and the Bethel Fair held in August. History Southwestern Alaska has been the homelands of Yup'ik peoples and their ancestors for thousands of years. The residents of what became Bethel were called the Mamterillermiut, meaning "Smokehouse People", after their nearby fish smokehouse. In the late 19th century, the Alaska Commercial Company established a trading post in the town, called Mumtrekhlogamute, which had a population of 41 people by the 1880 United States census, 1880 census. I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fridtjof Nansen
Fridtjof Wedel-Jarlsberg Nansen (; 10 October 1861 – 13 May 1930) was a Norwegian polymath and Nobel Peace Prize laureate. He gained prominence at various points in his life as an explorer, scientist, diplomat, humanitarian and co-founded the Fatherland League (Norway), Fatherland League. He led the team that made the first crossing of the Greenland interior in 1888, traversing the island on cross-country skis. He won international fame after reaching a record northern latitude of 86°14′ during his Nansen's Fram expedition, ''Fram'' expedition of 1893–1896. Although he retired from exploration after his return to Norway, his techniques of polar travel and his innovations in equipment and clothing influenced a generation of subsequent Arctic and Antarctic expeditions. He was elected an International Member of the American Philosophical Society in 1897. Nansen studied zoology at the Royal Frederick University in Christiania, Norway, Christiania and later worked as a curato ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gustav Frederik Holm
Gustav Frederik Holm (6 August 1849 – 13 March 1940) was a Danish naval officer and Arctic explorer born in Copenhagen. Career He was made commander in the Royal Danish Navy, navy in 1899, was chief of the hydrographic bureau from 1899 to 1909, and became director of pilots in 1912. He became distinguished for his explorations, especially of the east coast of Greenland. In 1876, he participated in K. J. V. Steenstrup's geology, geological expedition to the Qaqortoq, Julianehåb District. From 1883 to 1885 he led the Umiak Expedition with Thomas Vilhelm Garde, T. V. Garde, exploring the east coast of King Christian IX Land, Christian IX Land, as far as 66° 8' N using umiak boats. The expedition encountered 11 Inuit communities, numbering 431 inhabitants, who were previously unknown to Europeans, and discovered five great ice fiords. For his explorations he received gold medals from the Société de géographie, Paris (1891), and the Danish Geographical Society (1895), and th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Peter Holbøll
Captain Lieutenant Carl Peter Holbøll (1795 – 1856) was a Royal Danish Navy officer, colonial administrator and explorer. Holbøll served as Royal Inspector of Colonies and Whaling in North Greenland (1825–1828), and later as Inspector of South Greenland (1828–1856). During his tenure, he developed an interest in natural history and contributed significantly by sending extensive faunistic collections to zoologists in Copenhagen. Holbøll was a skilled amateur botanist and entomologist, and authored a treatise on Greenlandic birds.Ornithologischer Beitrag zur Fauna Grönlands' von Carl Holböll, übersetzt und mit einem Anhang versehen von J.H. Paulsen. Leipzig, Ernst Fleischer. 1846. In the paper, he described the arctic redpoll for the first time, naming it ''Linota hornemanni'' (now known as ''Acanthis flammea hornemanni'' or ''Acanthis hornemanni''), after the botanist Jens Wilken Hornemann. He also wrote a mathematics textbook for Greenlandic schools, which remained in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lying-in
Lying-in is the term given to the European forms of postpartum confinement, the traditional practice involving long bed rest before and after giving birth. The term and the practice it describes are old-fashioned or archaic, but lying-in used to be considered an essential component of the postpartum period, even if there were no medical complications during childbirth. Description A 1932 publication refers to lying-in as ranging from two weeks to two months.Lying in by Jan Nusche quoting ''The Bride's Book — A Perpetual Guide for the Montreal Bride'', published in 1932 It also suggests not "getting up" (getting out of bed post-birth) for at least nine days and ideally for 20 days. Care was provided either by her female relatives (mother or mother-in-law), or, for those who could afford it, by a t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Copenhagen
Copenhagen ( ) is the capital and most populous city of Denmark, with a population of 1.4 million in the Urban area of Copenhagen, urban area. The city is situated on the islands of Zealand and Amager, separated from Malmö, Sweden, by the Øresund strait. The Øresund Bridge connects the two cities by rail and road. Originally a Vikings, Viking fishing village established in the 10th century in the vicinity of what is now Gammel Strand, Copenhagen became the capital of Denmark in the early 15th century. During the 16th century, the city served as the ''de facto'' capital of the Kalmar Union and the seat of the Union's monarchy, which governed most of the modern-day Nordic countries, Nordic region as part of a Danish confederation with Sweden and Norway. The city flourished as the cultural and economic centre of Scandinavia during the Renaissance. By the 17th century, it had become a regional centre of power, serving as the heart of the Danish government and Military history ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Daniel Frederik Eschricht
Daniel Frederik Eschricht (18 March 1798 – 22 February 1863) was a Danish zoologist, physiologist, and anatomist known as an authority on whales. He was born in Copenhagen, and studied medicine at Frederiks Hospital, graduating in 1822. He was a student of François Magendie in Paris from 1824-1825, composing a thesis on cranial nerves, after which he studied with prominent European naturalists and anatomists, including Georges Cuvier. He joined the University of Copenhagen in 1829, becoming Professor of Anatomy and Physiology in 1836. The gray whale genus ''Eschrichtius'' was named for him a year after his death. In 1861, Eschricht dissected an orca and found thirteen common porpoises and fourteen seals inside. Jules Verne referred to the incident in the Sargasso chapter of his 1870 novel ''Twenty Thousand Leagues Under the Seas''. He was elected as a member of the American Philosophical Society The American Philosophical Society (APS) is an American scholarly organization ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hans Egede Saabye
Hans Egede Saabye (July 1746 – 31 August 1817) was a Danish priest and a missionary to Greenland. He was born on the island of Strynø in southern Denmark. He was the son of parish priest Jørgen Saabye and Petronella Egede, one of the daughters of Hans Egede, the apostle of Greenland, whose Bergen Company had begun the Danish-Norwegian settlement there in 1721. He graduated from Roskilde secondary school in 1764 and earned a degree in theology in 1767. In 1768, he was admitted to The Greenland Seminary (''Seminarium Groenlandicum'') and was instructed in the Greenlandic language by his maternal uncle, Poul Egede. In 1770, he was ordained into the ministry of the Church of Denmark. He was married to Vibeke Margrethe Thye (1748-1833) in April 1770. In the same year, he went as a missionary to Claushavn and Christianshåb in Greenland. In 1779, he became a parish priest in Vålse on Falster in south-eastern Denmark and in 1811 moved to Udby on Funen Funen (, ), is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mexico
Mexico, officially the United Mexican States, is a country in North America. It is the northernmost country in Latin America, and borders the United States to the north, and Guatemala and Belize to the southeast; while having maritime boundary, maritime boundaries with the Pacific Ocean to the west, the Caribbean Sea to the southeast, and the Gulf of Mexico to the east. Mexico covers 1,972,550 km2 (761,610 sq mi), and is the List of countries by area, thirteenth-largest country in the world by land area. With a population exceeding 130 million, Mexico is the List of countries by population, tenth-most populous country in the world and is home to the Hispanophone#Countries, largest number of native Spanish speakers. Mexico City is the capital and List of cities in Mexico, largest city, which ranks among the List of cities by population, most populous metropolitan areas in the world. Human presence in Mexico dates back to at least 8,000 BC. Mesoamerica, considered a cradle ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
