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Blaschka 1
Leopold Blaschka (27 May 1822 – 3 July 1895) and his son Rudolf Blaschka (17 June 1857 – 1 May 1939) were glass artists from Dresden, Germany, native to the Bohemian (Czech)–German borderland, and known for the production of biological models such as the glass sea creatures and Harvard University's Glass Flowers. Family background The Blaschka family traces its roots to Josefův Důl (Josefsthal) in the Jizera Mountains, Bohemia, a region known for processing glass, metals, and gems. Members of the Blacschka family had worked in Venice, Bohemia, and Germany. Leopold referred to this history in an 1889 letter to Mary Lee Ware: Born in Český Dub, Bohemia, and one of Joseph Blaschke's three sons, Leopold was apprenticed to a goldsmith and gemcutter in Turnov, a town in the Liberec Region of today's Czech Republic. He then joined the family business, which produced glass ornaments and glass eyes. It was there that Leopold developed a technique which he termed "glass-spi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dresden
Dresden (, ; Upper Saxon: ''Dräsdn''; wen, label=Upper Sorbian, Drježdźany) is the capital city of the German state of Saxony and its second most populous city, after Leipzig. It is the 12th most populous city of Germany, the fourth largest by area (after Berlin, Hamburg and Cologne), and the third most populous city in the area of former East Germany, after Berlin and Leipzig. Dresden's urban area comprises the towns of Freital, Pirna, Radebeul, Meissen, Coswig, Radeberg and Heidenau and has around 790,000 inhabitants. The Dresden metropolitan area has approximately 1.34 million inhabitants. Dresden is the second largest city on the River Elbe after Hamburg. Most of the city's population lives in the Elbe Valley, but a large, albeit very sparsely populated area of the city east of the Elbe lies in the West Lusatian Hill Country and Uplands (the westernmost part of the Sudetes) and thus in Lusatia. Many boroughs west of the Elbe lie in the foreland of the Ore Mounta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cholera
Cholera is an infection of the small intestine by some strains of the bacterium ''Vibrio cholerae''. Symptoms may range from none, to mild, to severe. The classic symptom is large amounts of watery diarrhea that lasts a few days. Vomiting and muscle cramps may also occur. Diarrhea can be so severe that it leads within hours to severe dehydration and electrolyte imbalance. This may result in sunken eyes, cold skin, decreased skin elasticity, and wrinkling of the hands and feet. Dehydration can cause the skin to turn bluish. Symptoms start two hours to five days after exposure. Cholera is caused by a number of types of ''Vibrio cholerae'', with some types producing more severe disease than others. It is spread mostly by unsafe water and unsafe food that has been contaminated with human feces containing the bacteria. Undercooked shellfish is a common source. Humans are the only known host for the bacteria. Risk factors for the disease include poor sanitation, not enough clea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edouard Van Beneden
Édouard Joseph Louis Marie Van Beneden (5 March 1846 in Leuven – 28 April 1910 in Liège), son of Pierre-Joseph Van Beneden, was a Belgian embryologist, cytologist and marine biologist. He was professor of zoology at the University of Liège. He contributed to cytogenetics by his works on the roundworm ''Ascaris''. In this work he discovered how chromosomes organized meiosis (the production of gametes). Van Beneden elucidated, together with Walther Flemming and Eduard Strasburger, the essential facts of mitosis, where, in contrast to meiosis, there is a qualitative and quantitative equality of chromosome distribution to daughter cells. (See karyotype). Publications * ''Recherches sur la composition et la signification de l'œuf'' 186Full text available from Archive.org * ''La maturation de l'oeuf, la fecondation, et les pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Papier-mâché
upright=1.3, Mardi Gras papier-mâché masks, Haiti upright=1.3, Papier-mâché Catrinas, traditional figures for day of the dead celebrations in Mexico Papier-mâché (, ; , literally "chewed paper") is a composite material consisting of paper pieces or pulp, sometimes reinforced with textiles, bound with an adhesive, such as glue, starch, or wallpaper paste. Papier-mâché sculptures are used as an economical building material for a variety of traditional and ceremonial activities, as well as in arts and crafts. Preparation methods There are two methods to prepare papier-mâché. The first method makes use of paper strips glued together with adhesive, and the other uses paper pulp obtained by soaking or boiling paper to which glue is then added. With the first method, a form for support is needed on which to glue the paper strips. With the second method, it is possible to shape the pulp directly inside the desired form. In both methods, reinforcements with wire, chi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sea Anemone
Sea anemones are a group of predation, predatory marine invertebrates of the order (biology), order Actiniaria. Because of their colourful appearance, they are named after the ''Anemone'', a terrestrial flowering plant. Sea anemones are classified in the phylum Cnidaria, class Anthozoa, subclass Hexacorallia. As cnidarians, sea anemones are related to corals, jellyfish, tube-dwelling anemones, and ''hydra (genus), Hydra''. Unlike jellyfish, sea anemones do not have a Jellyfish#Life history and behavior, medusa stage in their life cycle. A typical sea anemone is a single polyp (zoology), polyp attached to a hard surface by its base, but some species live in soft sediment, and a few float near the surface of the water. The polyp has a columnar trunk topped by an oral disc with a ring of tentacles and a central mouth. The tentacles can be retracted inside the body cavity or expanded to catch passing prey. They are armed with cnidocytes (stinging cells). In many species, additional n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blaschka Glass Models At Nat Hist Museum Pisa University
Leopold Blaschka (27 May 1822 – 3 July 1895) and his son Rudolf Blaschka (17 June 1857 – 1 May 1939) were glass artists from Dresden, Germany, native to the Bohemian (Czech)–German borderland, and known for the production of biological models such as the glass sea creatures and Harvard University's Glass Flowers. Family background The Blaschka family traces its roots to Josefův Důl (Josefsthal) in the Jizera Mountains, Bohemia, a region known for processing glass, metals, and gems. Members of the Blacschka family had worked in Venice, Bohemia, and Germany. Leopold referred to this history in an 1889 letter to Mary Lee Ware: Born in Český Dub, Bohemia, and one of Joseph Blaschke's three sons, Leopold was apprenticed to a goldsmith and gemcutter in Turnov, a town in the Liberec Region of today's Czech Republic. He then joined the family business, which produced glass ornaments and glass eyes. It was there that Leopold developed a technique which he termed "glass-s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Blaschka 1
Leopold Blaschka (27 May 1822 – 3 July 1895) and his son Rudolf Blaschka (17 June 1857 – 1 May 1939) were glass artists from Dresden, Germany, native to the Bohemian (Czech)–German borderland, and known for the production of biological models such as the glass sea creatures and Harvard University's Glass Flowers. Family background The Blaschka family traces its roots to Josefův Důl (Josefsthal) in the Jizera Mountains, Bohemia, a region known for processing glass, metals, and gems. Members of the Blacschka family had worked in Venice, Bohemia, and Germany. Leopold referred to this history in an 1889 letter to Mary Lee Ware: Born in Český Dub, Bohemia, and one of Joseph Blaschke's three sons, Leopold was apprenticed to a goldsmith and gemcutter in Turnov, a town in the Liberec Region of today's Czech Republic. He then joined the family business, which produced glass ornaments and glass eyes. It was there that Leopold developed a technique which he termed "glass-spi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ludwig Reichenbach
Heinrich Gottlieb Ludwig Reichenbach (8 January 1793 – 17 March 1879) was a German botanist and ornithologist. It was he who first requested Leopold Blaschka to make a set of glass marine invertebrate models for scientific education and museum showcasing, the successful commission giving rise to the creation of the Blaschkas' Glass sea creatures and, subsequently and indirectly, the more famous Glass Flowers. Early life Born in Leipzig and the son of Johann Friedrich Jakob Reichenbach (the author in 1818 of the first Greek-German dictionary) Reichenbach studied medicine and natural science at the University of Leipzig in 1810 and, eight years later in 1818, he the now Professor became an instructor before, in 1820, he was appointed the director of the Dresden natural history museum and a professor at the Surgical-Medical Academy in Dresden, where he remained for many years. Glass sea creatures Director of the natural history museum in Dresden, Professor Reichenbach was fac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orchid
Orchids are plants that belong to the family Orchidaceae (), a diverse and widespread group of flowering plants with blooms that are often colourful and fragrant. Along with the Asteraceae, they are one of the two largest families of flowering plants. The Orchidaceae have about 28,000 currently accepted species, distributed in about 763 genera. (See ''External links'' below). The determination of which family is larger is still under debate, because verified data on the members of such enormous families are continually in flux. Regardless, the number of orchid species is nearly equal to the number of bony fishes, more than twice the number of bird species, and about four times the number of mammal species. The family encompasses about 6–11% of all species of seed plants. The largest genera are ''Bulbophyllum'' (2,000 species), ''Epidendrum'' (1,500 species), ''Dendrobium'' (1,400 species) and ''Pleurothallis'' (1,000 species). It also includes ''Vanilla'' (the genus of the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sychrov Castle
Sychrov Castle can be found near the village Sychrov in the Liberec Region of the Czech Republic. It is a unique example of Neo-Gothic castle architecture from the second half of the 19th century. A large park surrounds the castle. History Since the 15th century, a fort existed in the place now occupied by Sychrov. During the years between 1690 and 1693, a small baroque castle was constructed here. In 1820, the castle was bought by the Rohan family, French aristocrats exiled by the French Revolution who decided to stay in the Austrian Empire. The 125-year-long ownership by the Rohans proved to be the most important in the castle's history. In 1945 the castle was nationalized because of the Beneš decrees. Since 1950, it has been open to the public to a small extent. Since the 1970s, however, large parts of the castle were open to the public. Since the beginning of the 1990s, an extensive reconstruction and restoration of the castle exteriors, interiors, and the park have been u ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
House Of Rohan
The House of Rohan ( br, Roc'han) is a Breton people, Breton family of viscounts, later dukes and princes in the French nobility, coming from the locality of Rohan (commune), Rohan in Brittany. Their line descends from the viscounts of Porhoët and is said to trace back to the legendary Conan Meriadoc. Through the Porhoët, the Rohan are related to the Dukes of Brittany, with whom the family intermingled again after its inception. During the Middle Ages, it was one of the most powerful families in the Duchy of Brittany. They developed ties with the French and English royal houses as well, and played an important role in History of France, French and History of Europe, European history. The only surviving branch of the family is the branch of the Rohan-Rocheforts, Duchy of Montbazon, Dukes of Montbazon, Dukes of Bouillon and Austrian Princes of Rohan, who migrated in the early 19th century to Austria.Fernand de Saint-Simon, Etienne de Séréville, ''Dictionnaire de la noblesse fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lampworking
Lampworking is a type of glasswork in which a torch or lamp is used to melt the glass. Once in a molten state, the glass is formed by blowing and shaping with tools and hand movements. It is also known as flameworking or torchworking, as the modern practice no longer uses oil-fueled lamps. Although lack of a precise definition for lampworking makes it difficult to determine when this technique was first developed, the earliest verifiable lampworked glass is probably a collection of beads thought to date to the fifth century BC. Lampworking became widely practiced in Murano, Italy in the 14th century. As early as the 17th century, itinerant glassworkers demonstrated lampworking to the public. In the mid-19th century lampwork technique was extended to the production of paperweights, primarily in France, where it became a popular art form, still collected today. Lampworking differs from glassblowing in that glassblowing uses a furnace as the primary heat source, although torches are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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