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Pneumatic Tube
Pneumatic tubes (or capsule pipelines, also known as pneumatic tube transport or PTT) are systems that propel cylindrical containers through networks of Tubing (material), tubes by Gas compressor, compressed air or by partial vacuum. They are used for transporting solid objects, as opposed to conventional pipelines which transport fluids. In the late 19th and early 20th centuries, pneumatic tube networks gained acceptance in offices that needed to transport small, urgent packages, such as mail, other paperwork, or money, over relatively short distances, within a building or, at most, within a city. Some installations became quite complex, but have mostly been superseded. However, they have been further developed in the 21st century in places such as hospitals, to send blood samples and the like to clinical laboratory, clinical laboratories for analysis. A small number of pneumatic transportation systems were built for larger cargo, to compete with train and subway systems. However ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Supermarket
A supermarket is a self-service Retail#Types of outlets, shop offering a wide variety of food, Drink, beverages and Household goods, household products, organized into sections. Strictly speaking, a supermarket is larger and has a wider selection than earlier grocery stores, but is smaller and more limited in the range of merchandise than a hypermarket or Big-box store, big-box market. In everyday American English usage, however, "grocery store" is often casually used as a synonym for "supermarket". The supermarket retail format first appeared around 1930 in the United States as the culmination of almost two decades of retail innovations, and began to spread to other countries after extensive worldwide publicity in 1956. The supermarket typically has places for fresh meat, fresh produce, Dairy product, dairy, Delicatessen, deli items, baked goods, and similar foodstuffs. Shelf space is also reserved for canned and packaged goods and for various non-food items such as kitchenwa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Cannon
A fish ladder, also known as a fishway, fish pass, fish steps, or fish cannon, is a structure on or around artificial and natural barriers (such as dams, locks and waterfalls) to facilitate diadromous fishes' natural migration as well as movements of potamodromous species. Most fishways enable fish to pass around the barriers by swimming and leaping up a series of relatively low steps (hence the term ''ladder'') into the waters on the other side. The velocity of water falling over the steps has to be great enough to attract the fish to the ladder, but it cannot be so great that it washes fish back downstream or exhausts them to the point of inability to continue their journey upriver. History Written reports of rough fishways date to 17th-century France, where bundles of branches were used to make steps in steep channels to bypass obstructions. A 1714 construction of an old channel bypassing a dam, "originally cut for the passage of fish up and down the river", is mentio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Waymarking
Trail blazing or way marking is the practice of marking paths in outdoor recreational areas with signs or markings that follow each other at certain, though not necessarily exactly defined, distances and mark the direction of the trail. A blaze in the beginning meant "a mark made on a tree by slashing the bark" (''The Canadian Oxford Dictionary''). Originally a waymark was "any conspicuous object which serves as a guide to travellers; a landmark" (''Oxford English Dictionary''). Today, paint (most prevalent), carvings, affixed markers, posts, flagging, cairns, and crosses, are commonly used. Blaze frequency and recognizability varies significantly. In some wilderness areas, such as those governed by the US Wilderness Act requiring that the land seem "untrammeled by man," blazes are kept to a minimum. Alternatively, highly utilized public areas, such as busy municipal, county, or state parks, will use frequent and highly visible blazes to maximize trail recognition. Types of s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edina, Minnesota
Edina ( , ) is a city in Hennepin County, Minnesota, Hennepin County, Minnesota, United States and a first-ring suburb of Minneapolis. The population was 53,494 at the 2020 United States census, 2020 census, making it the 18th most populous city in Minnesota. Edina began as a small agriculture, farming and gristmill, milling community along Minnehaha Creek in the 1860s and became one of Minneapolis's first incorporated suburbs in 1888. After years of being a streetcar suburb, Edina saw expanded development as a car-centric suburb in the 1950s and 1960s. The city is known for its shopping, parks, and high quality of life and also has the nation's oldest indoor mall, the Southdale Center. History Settlement Edina began as part of Richfield Township, Minnesota. By the 1870s, 17 families, most of them immigrating as a result of the Great Famine (Ireland), Great Famine of Ireland, had come to Minnesota and claimed land in the southwest section of what was then Richfield Townsh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
McDonald's
McDonald's Corporation, doing business as McDonald's, is an American Multinational corporation, multinational fast food chain store, chain. As of 2024, it is the second largest by number of locations in the world, behind only the Chinese chain Mixue Ice Cream & Tea. Brothers Richard and Maurice McDonald founded McDonald's in San Bernardino, California, in 1940 as a hamburger stand, and soon Franchising, franchised the company. The logo, the Golden Arches, was introduced in 1953. In 1955, the businessman Ray Kroc joined McDonald's as a franchise agent and bought the company in 1961. In the years since, it has expanded internationally. Today, McDonald's has over 50,000 restaurant locations worldwide, with around a quarter in the US. Other than food sales, McDonald's generates income through its ownership of 70% of restaurant buildings and 45% of the underlying land (which it leases to its franchisees). In 2018, McDonald's was the world's second-largest private employer with 1 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Neutron Activation Analysis
Neutron activation analysis (NAA) is a nuclear reaction, nuclear process used for determining the concentrations of chemical element, elements in many materials. NAA allows discrete Sampling (statistics), sampling of elements as it disregards the chemical form of a sample, and focuses solely on atomic nuclei. The method is based on neutron activation and thus requires a neutron source. The sample is bombarded with neutrons, causing its constituent elements to form radioactive isotopes. The radiation, radioactive emissions and radioactive decay paths for each element have long been studied and determined. Using this information, it is possible to study emission spectrum, spectra of the emissions of the radioactive sample, and determine the concentrations of the various elements within it. A particular advantage of this technique is that it does not destroy the sample, and thus has been used for the analysis of works of art and historical artifacts. NAA can also be used to determine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nuclear Chemistry
Nuclear chemistry is the sub-field of chemistry dealing with radioactivity, nuclear processes, and transformations in the nuclei of atoms, such as nuclear transmutation and nuclear properties. It is the chemistry of radioactive elements such as the actinides, radium and radon together with the chemistry associated with equipment (such as nuclear reactors) which are designed to perform nuclear processes. This includes the corrosion of surfaces and the behavior under conditions of both normal and abnormal operation (such as during an accident). An important area is the behavior of objects and materials after being placed into a nuclear waste storage or disposal site. It includes the study of the chemical effects resulting from the absorption of radiation within living animals, plants, and other materials. The radiation chemistry controls much of radiation biology as radiation has an effect on living things at the molecular scale. To explain it another way, the radiation alters th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mission Operations Control Room During Apollo 13
Mission (from Latin 'the act of sending out'), Missions or The Mission may refer to: Geography Australia *Mission River (Queensland) Canada *Mission, British Columbia, a district municipality *Mission, Calgary, Alberta, a neighbourhood * Okanagan Mission, a neighbourhood in Kelowna, British Columbia, commonly called "the Mission" *Mission River, a short river located at the delta of the Kaministiquia River of northern Ontario, Canada * Mission Ridge (British Columbia), a ridge in BC * Mission Ridge Ski Area, a Ski Area near the ridge in BC *Mission Lake, a lake in Saskatchewan United States * Mission, Delaware, an unincorporated community * Mission, Kansas, a city * Mission, Michigan, an unincorporated community * Mission, Minnesota, an unincorporated community * Mission, Oregon, an unincorporated community and census-designated place * Mission, South Dakota, a city * Mission, Texas, a city * Mission District, San Francisco, a neighborhood in San Francisco, Californi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cosmosphere
Cosmosphere is an international science education center and space museum in Hutchinson, Kansas, United States, located on the northeast corner of Plum Street and 11th Avenue, next to the Hutchinson Community College. It was previously known as the Kansas Cosmosphere. The museum houses over 13,000 spaceflight artifacts—the largest combined collection of US and Russian spaceflight artifacts in the world, and is home to various space educational programs. Facilities The Cosmosphere grew from a planetarium established on the Kansas State Fairgrounds in 1962. The facility houses the largest collection of Russian space artifacts outside of Moscow, and a collection of US space artifacts second only to the National Air and Space Museum in Washington, D.C. The Cosmosphere has five venues: the Hall of Space Museum, the Justice Planetarium, the Carey Digital Dome Theater, Robert H. Goddard, Dr. Goddard's Lab (an explosive live science presentation on the history of rocketry) and Cosm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johnson Space Center
The Lyndon B. Johnson Space Center (JSC) is NASA's center for human spaceflight in Houston, Texas (originally named the Manned Spacecraft Center), where human spaceflight training, research, and flight controller, flight control are conducted. It was renamed in honor of the late U.S. president and Texas native, Lyndon B. Johnson, by an act of the United States Senate on February 19, 1973. JSC consists of a complex of 100 buildings constructed on in Clear Lake (region), Clear Lake. The center is home to NASA Astronaut Corps, NASA's astronaut corps, and is responsible for training astronauts from both the U.S. and its international partners. It also houses the Christopher C. Kraft Jr. Mission Control Center, which has provided the flight controller, flight control function for every NASA human spaceflight since Gemini 4 (including Apollo program, Apollo, Skylab, Apollo–Soyuz, and Space Shuttle program, Space Shuttle). It is popularly known by its radio call signs "Mission Contr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Historic Landmark
A National Historic Landmark (NHL) is a National Register of Historic Places property types, building, district, object, site, or structure that is officially recognized by the Federal government of the United States, United States government for its outstanding historical significance. Only some 2,500, or roughly three percent, of over 90,000 places listed on the country's National Register of Historic Places (NRHP) are recognized as National Historic Landmarks. A National Historic Landmark District may include many contributing properties that are buildings, structures, sites or objects, and it may also include non-contributing properties. Contributing properties may or may not also be separately listed as NHLs or on the NRHP. History The origins of the first National Historic Landmark was a simple cedar post, placed by the Lewis and Clark Expedition on their 1804 outbound trek to the Pacific Ocean in commemoration of the death from natural causes of Sergeant Charles Floyd (e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
