|
DuSable Park, Chicago
DuSable Park is a former commercial and industrial site, at the mouth of the Chicago River that has been the subject of environmental remediation and is awaiting redevelopment into a park. The project, first announced in 1987 by Mayor Harold Washington, is named in honor Jean Baptiste Point du Sable, who settled nearby in the 1780s and is known as the "Founder of Chicago". Location The park is located directly east of North Lake Shore Drive and south of Lake Point Tower and Navy Pier, with Lake Michigan to its east. To its north is the entrance to the Ogden Slip and to its south is the mouth of the Chicago River. The canceled Chicago Spire project had been planned for a site just west of DuSable Park, on the other side of Lake Shore Drive. History Formation Following the construction of the original jetty for the Chicago Harbor Lighthouse, lake currents were affected and soil was deposited at the area now known as DuSable Park.Palmer, L. (2002, March 11). ''3 Acres/Timeline ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chicago
(''City in a Garden''); I Will , image_map = , map_caption = Interactive Map of Chicago , coordinates = , coordinates_footnotes = , subdivision_type = Country , subdivision_name = United States , subdivision_type1 = State , subdivision_type2 = Counties , subdivision_name1 = Illinois , subdivision_name2 = Cook and DuPage , established_title = Settled , established_date = , established_title2 = Incorporated (city) , established_date2 = , founder = Jean Baptiste Point du Sable , government_type = Mayor–council , governing_body = Chicago City Council , leader_title = Mayor , leader_name = Lori Lightfoot ( D) , leader_title1 = City Clerk , leader_name1 = Anna Valencia ( D) , unit_pref = Imperial , area_footnotes = , area_tot ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
PulteGroup
PulteGroup, Inc. is an American residential home construction company based in Atlanta, Georgia, United States. The company is the 3rd largest home construction company in the United States based on the number of homes closed. In total, the company has built over 775,000 homes. The company operates in 44 markets in 23 states. In 2021, it ranked 284th on the Fortune 500. The company was founded by Bill Pulte in Michigan, and moved its headquarters to Atlanta, Georgia in 2014. Since 2016, Ryan Marshall has been the President and CEO of the company. History In 1950, Bill Pulte, who was 18 years old, began building and selling houses. In 1956, the company was formed and was based in Bloomfield Hills, Michigan. In 1972, the company became a public company via an initial public offering. In 1998, PulteGroup acquired Divosta for an estimated $150 million. The company also acquired Radnor Homes. In 2001, the company acquired Del E. Webb Construction Company, founded by Del Webb, for $1.8 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thorium
Thorium is a weakly radioactive metallic chemical element with the symbol Th and atomic number 90. Thorium is silvery and tarnishes black when it is exposed to air, forming thorium dioxide; it is moderately soft and malleable and has a high melting point. Thorium is an electropositive actinide whose chemistry is dominated by the +4 oxidation state; it is quite reactive and can ignite in air when finely divided. All known thorium isotopes are unstable. The most stable isotope, 232Th, has a half-life of 14.05 billion years, or about the age of the universe; it decays very slowly via alpha decay, starting a decay chain named the thorium series that ends at stable 208 Pb. On Earth, thorium and uranium are the only significantly radioactive elements that still occur naturally in large quantities as primordial elements. Thorium is estimated to be over three times as abundant as uranium in the Earth's crust, and is chiefly refined from monazite sands as a by-product of extracti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radioactive Decay
Radioactive decay (also known as nuclear decay, radioactivity, radioactive disintegration, or nuclear disintegration) is the process by which an unstable atomic nucleus loses energy by radiation. A material containing unstable nuclei is considered radioactive. Three of the most common types of decay are alpha decay ( ), beta decay ( ), and gamma decay ( ), all of which involve emitting one or more particles. The weak force is the mechanism that is responsible for beta decay, while the other two are governed by the electromagnetism and nuclear force. A fourth type of common decay is electron capture, in which an unstable nucleus captures an inner electron from one of the electron shells. The loss of that electron from the shell results in a cascade of electrons dropping down to that lower shell resulting in emission of discrete X-rays from the transitions. A common example is iodine-125 commonly used in medical settings. Radioactive decay is a stochastic (i.e. random) proce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Revetment
A revetment in stream restoration, river engineering or coastal engineering is a facing of impact-resistant material (such as stone, concrete, sandbags, or wooden piles) applied to a bank or wall in order to absorb the energy of incoming water Water (chemical formula ) is an inorganic, transparent, tasteless, odorless, and nearly colorless chemical substance, which is the main constituent of Earth's hydrosphere and the fluids of all known living organisms (in which it acts as a ... and protect it from erosion. River or coastal revetments are usually built to preserve the existing uses of the shoreline and to protect the slope. In military engineering it is a sloped structure formed to secure an area from artillery, bombing, or stored explosives. Freshwater revetments Many revetments are used to line the banks of freshwater rivers, lakes, and man-made reservoirs, especially to prevent damage during periods of floods or heavy seasonal rains (see riprap). Many mater ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
DuSable Park Radiation Sign 2008
Jean Baptiste Point du Sable (also spelled ''Point de Sable'', ''Point au Sable'', ''Point Sable'', ''Pointe DuSable'', ''Pointe du Sable''; before 1750 – 28 August 1818) is regarded as the first permanent non-Indigenous settler of what would later become Chicago, Illinois, and is recognized as the "Founder of Chicago". A school, museum, harbor, park, bridge, and road have been named in his honor. The site where he settled near the mouth of the Chicago River around the 1780s is identified as a National Historic Landmark, now located in Pioneer Court. Point du Sable was of African descent, but little else is known of his early life prior to the 1770s. During his career, the areas where he settled and traded around the Great Lakes and in the Illinois Country changed hands several times among France, Britain, Spain and the United States. Described as handsome and well educated, Point duSable married a Native American woman, ''Kitiwaha,'' and they had two children. In 1779, duri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chicago Sun-Times
The ''Chicago Sun-Times'' is a daily newspaper published in Chicago, Illinois, United States. Since 2022, it is the flagship paper of Chicago Public Media, and has the second largest circulation among Chicago newspapers, after the ''Chicago Tribune''. The modern paper grew out of the 1948 merger of the ''Chicago Sun'' and the ''Chicago Daily Times''. Journalists at the paper have received eight Pulitzer prizes, mostly in the 1970s; one recipient was film critic Roger Ebert (1975), who worked at the paper from 1967 until his death in 2013. Long owned by the Marshall Field family, since the 1980s ownership of the paper has changed hands numerous times, including twice in the late 2010s. History The ''Chicago Sun-Times'' claims to be the oldest continuously published daily newspaper in the city. That claim is based on the 1844 founding of the ''Chicago Daily Journal'', which was also the first newspaper to publish the rumor, now believed false, that a cow owned by Catherine O'L ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Martin Puryear
Martin L. Puryear (born May 23, 1941) is an American artist known for his devotion to traditional craft. Working in wood and bronze, among other media, his reductive technique and meditative approach challenge the physical and poetic boundaries of his materials.Shearer, Linda. ''Young American Artists 1978 Exxon National Exhibition''. New York: The Solomon Guggenheim Museum, 1978 The artist's Martin Puryear: Liberty/Libertà' exhibition represented the United States at the 2019 Venice Biennale. Life Born in 1941 in Washington, D.C., Martin Puryear began exploring traditional craft methods in his youth, making tools, boats, musical instruments, and furniture. After receiving a BA in Fine Art from the Catholic University of America in 1963, Puryear spent two years as a Peace Corps volunteer in Sierra Leone where he learned local woodworking techniques.Elderfield, John, and Michael Auping, ''Martin Puryear''. New York: The Museum of Modern Art, 2007 From 1966–1968, he studied a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Art Institute Of Chicago
The Art Institute of Chicago in Chicago's Grant Park, founded in 1879, is one of the oldest and largest art museums in the world. Recognized for its curatorial efforts and popularity among visitors, the museum hosts approximately 1.5 million people annually. Its collection, stewarded by 11 curatorial departments, is encyclopedic, and includes iconic works such as Georges Seurat's ''A Sunday on La Grande Jatte'', Pablo Picasso's ''The Old Guitarist'', Edward Hopper's '' Nighthawks'', and Grant Wood's '' American Gothic''. Its permanent collection of nearly 300,000 works of art is augmented by more than 30 special exhibitions mounted yearly that illuminate aspects of the collection and present cutting-edge curatorial and scientific research. As a research institution, the Art Institute also has a conservation and conservation science department, five conservation laboratories, and one of the largest art history and architecture libraries in the country—the Ryerson and B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radioactive Contamination
Radioactive contamination, also called radiological pollution, is the deposition of, or presence of radioactive substances on surfaces or within solids, liquids, or gases (including the human body), where their presence is unintended or undesirable (from the International Atomic Energy Agency (IAEA) definition). Such contamination presents a hazard because the radioactive decay of the contaminants, produces ionizing radiation (namely alpha, beta, gamma rays and free neutrons). The degree of hazard is determined by the concentration of the contaminants, the energy of the radiation being emitted, the type of radiation, and the proximity of the contamination to organs of the body. It is important to be clear that the contamination gives rise to the radiation hazard, and the terms "radiation" and "contamination" are not interchangeable. The sources of radioactive pollution can be classified into two groups: natural and man-made. Following an atmospheric nuclear weapon discharge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
