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Lift
Lift or LIFT may refer to: Physical devices * Elevator, or lift, a device used for raising and lowering people or goods ** Paternoster lift, a type of lift using a continuous chain of cars which do not stop ** Patient lift, or Hoyer lift, mobile lift, ceiling lift, a lift to assist a caregiver for a disabled patient ** Rack lift, a type of elevator ** Ski lift, an aerial or surface lift for uphill transport ** Space elevator, a hypothetical structure for transporting material from a planet's surface into outer space ** Wheelchair lift or platform lift, a powered device to assist a person in a wheelchair * Forklift, a powered industrial truck used to lift and move materials short distances * Scissor lift, a type of aerial work platform * Body lift, an adaptation (of fixed height) to lift the automobile body from the frame * Suspension lift, a modification raising the suspension of the automobile * Stairlift, a mechanical device to help people with disabilities get up stairs * He ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lift (force)
When a fluid flows around an object, the fluid exerts a force on the object. Lift is the Euclidean_vector#Decomposition_or_resolution, component of this force that is perpendicular to the oncoming flow direction. It contrasts with the drag (physics), drag force, which is the component of the force parallel to the flow direction. Lift conventionally acts in an upward direction in order to counter the force of gravity, but it is defined to act perpendicular to the flow and therefore can act in any direction. If the surrounding fluid is air, the force is called an aerodynamic force. In water or any other liquid, it is called a Fluid dynamics, hydrodynamic force. Dynamic lift is distinguished from other kinds of lift in fluids. Aerostatics, Aerostatic lift or buoyancy, in which an internal fluid is lighter than the surrounding fluid, does not require movement and is used by balloons, blimps, dirigibles, boats, and submarines. Planing (boat), Planing lift, in which only the lower po ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lift (data Mining)
Lift or LIFT may refer to: Physical devices * Elevator, or lift, a device used for raising and lowering people or goods ** Paternoster lift, a type of lift using a continuous chain of cars which do not stop ** Patient lift, or Hoyer lift, mobile lift, ceiling lift, a lift to assist a caregiver for a disabled patient ** Rack lift, a type of elevator ** Ski lift, an aerial or surface lift for uphill transport ** Space elevator, a hypothetical structure for transporting material from a planet's surface into outer space ** Wheelchair lift or platform lift, a powered device to assist a person in a wheelchair * Forklift, a powered industrial truck used to lift and move materials short distances * Scissor lift, a type of aerial work platform * Body lift, an adaptation (of fixed height) to lift the automobile body from the frame * Suspension lift, a modification raising the suspension of the automobile * Stairlift, a mechanical device to help people with disabilities get up stai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elevator
An elevator (American English) or lift (Commonwealth English) is a machine that vertically transports people or freight between levels. They are typically powered by electric motors that drive traction cables and counterweight systems such as a hoist, although some pump hydraulic fluid to raise a cylindrical piston like a jack. Elevators are used in agriculture and manufacturing to lift materials. There are various types, like chain and bucket elevators, grain augers, and hay elevators. Modern buildings often have elevators to ensure accessibility, especially where ramps aren't feasible. High-speed elevators are common in skyscrapers. Some elevators can even move horizontally. History Pre-industrial era The earliest known reference to an elevator is in the works of the Roman architect Vitruvius, who reported that Archimedes ( – ) built his first elevator probably in 236 BC. Sources from later periods mention elevators as cabs on a hemp rope, powered by people o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rack Lift
An elevator (American English) or lift (Commonwealth English) is a machine that vertically transports people or freight between levels. They are typically powered by electric motors that drive traction cables and counterweight systems such as a hoist, although some pump hydraulic fluid to raise a cylindrical piston like a jack. Elevators are used in agriculture and manufacturing to lift materials. There are various types, like chain and bucket elevators, grain augers, and hay elevators. Modern buildings often have elevators to ensure accessibility, especially where ramps aren't feasible. High-speed elevators are common in skyscrapers. Some elevators can even move horizontally. History Pre-industrial era The earliest known reference to an elevator is in the works of the Roman architect Vitruvius, who reported that Archimedes ( – ) built his first elevator probably in 236 BC. Sources from later periods mention elevators as cabs on a hemp rope, powered by people or an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lift (web Framework)
Lift is a free and open-source web framework that is designed for the Scala programming language. It was originally created bDavid Pollakwho was dissatisfied with certain aspects of the Ruby on Rails framework. Lift was launched as an open source project on 26 February 2007 under the Apache License 2.0. A commercially popular web platform often cited as being developed using Lift is Foursquare. Design goals and overview Lift is an expressive framework for writing web applications. It draws upon concepts from peer frameworks such as Grails, Ruby on Rails, Seaside, Wicket and Django. It favors convention over configuration in the style of Ruby on Rails, although it does not prescribe the model–view–controller (MVC) architectural pattern. Rather, Lift is chiefly modeled upon the so-called "View First" (designer friendly) approach to web page development inspired by the Wicket framework. Lift is also designed to be a high-performance, scalable web framework by leveraging Sc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Forklift
A forklift (also called industrial truck, lift truck, jitney, hi-lo, fork truck, fork hoist, and forklift truck) is a powered industrial truck used to lift and move materials over short distances. The forklift was developed in the early 20th century by various companies, including Clark Material Handling Company, Clark, which made Transmission (mechanics), transmissions, and Yale Materials Handling Corporation, Yale & Towne Manufacturing, which made Hoist (device), hoists. Since World War II, the development and use of the forklift truck has greatly expanded worldwide. Forklifts have become an indispensable piece of equipment in manufacturing and warehousing. In 2013, the top 20 manufacturers worldwide posted sales of $30.4 billion, with 944,405 machines sold. History Developments from the middle of the 19th century to the early 20th century led to today's modern forklifts. The forerunners of the modern forklift were manually powered hoists to lift loads. In 1906, the Penns ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Space Elevator
A space elevator, also referred to as a space bridge, star ladder, and orbital lift, is a proposed type of planet-to-space transportation system, often depicted in science fiction. The main component would be a cable (also called a tether) anchored to the surface and extending into space. An Earth-based space elevator would consist of a cable with one end attached to the surface near the equator and the other end attached to a counterweight in space beyond geostationary orbit (35,786 km altitude). The competing forces of gravity, which is stronger at the lower end, and the upward centrifugal pseudo-force (it is actually the inertia of the counterweight that creates the tension on the space side), which is stronger at the upper end, would result in the cable being held up, under tension, and stationary over a single position on Earth. With the tether deployed, climbers (crawlers) could repeatedly climb up and down the tether by mechanical means, releasing their cargo to and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wheelchair Lift
A wheelchair lift, also known as a platform lift, or vertical platform lift, is a fully powered device designed to raise a wheelchair and its occupant in order to overcome a step or similar vertical barrier. Wheelchair lifts can be installed in homes or businesses and are often added to both private and public vehicles in order to meet accessibility requirements laid out by disability acts. These mobility devices are often installed in homes as an alternative to a stair lift, which only transport a passenger and not his/her wheelchair or mobility scooter. Regulations In the United States, the Americans with Disabilities Act of 1990 (ADA) required that all new mass transit vehicles placed into service after July 1, 1993, be accessible to persons in wheelchairs,"Getting on board" (July–August 1993). ''Trolleybus Magazine'' No. 190, pp. 86–87. National Trolleybus Association (UK). . and until the 2000s, this requirement was most commonly met by the inclusion of a wheelc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Suspension Lift
A suspension lift is a modification to a vehicle to raise the ride height. It is done for the purpose of improving the Off-roading, off road performance of SUVs or trucks and other off-road vehicles, or for cosmetic purposes. Suspension lifts can enable steeper approach, departure, and breakover angles, higher ground clearance, and helps accommodate larger wheels and tires. Due to the raised center of gravity, maximum safe operating angles can be reduced and roadholding is often significantly impaired. Sensors, transmitters and cameras may need to be recalibrated, physically relocated or modified to maintain normal functioning of features like Autonomous Emergency Braking, AEB, Adaptive cruise control, ACC or Tesla Full Self-Driving, FSD. Suspension lifts are also found on a number of high performance sports cars, in which a very low ground clearance is used to improve handling, using an aerodynamic effect known as downforce; examples include the Ferrari 488, Lamborghini Huracan, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Figure Skating Lifts
Figure skating lifts are required elements in two disciplines of figure skating: pair skating and ice dance. There are five groups of lifts in pair skating, categorized in order of increasing level of difficulty. Judges look for the following when evaluating pair lifts: speed of entry and exit; control of the woman's free leg when she is exiting out of the lift, with the goal of keeping the leg high and sweeping; the position of the woman in the air; the man's footwork; quick and easy changes of position; and the maintenance of flow throughout the lift. Twist lifts are "the most thrilling and exciting component in pair skating". They can also be the most difficult movement to perform correctly. They require more strength and coordination than many other pair elements, and are usually the first or second element in a program. According to the International Skating Union (ISU), "the Woman must be caught in the air at the waist by the Man prior to landing and be assisted to a smooth la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paternoster Lift
A paternoster (, , or ) or paternoster lift is a passenger elevator, consisting of a chain of open compartments, each usually designed for two people, that move slowly in a loop up and down inside a building without stopping. Passengers can step on or off at any floor they like. The same technique is also used for filing cabinets to store large amounts of (paper) documents or for small spare parts. The much smaller belt manlift, consisting of an endless belt with steps and rungs, but no compartments, is also sometimes called a paternoster. The name ''paternoster'' ("Our Father", the first two words of the Lord's Prayer in Latin) was originally applied to the device because the elevator is in the form of a loop and is thus similar to rosary beads used as an aid in reciting prayers. The construction of new paternosters was stopped in the mid-1970s out of concern for safety, but public sentiment has kept many of the remaining examples open. By far, most remaining paternosters ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Patient Lift
A patient lift (patient hoist, jack hoist, or Hoyer lift) may be either a sling lift or a sit-to-stand lift. This is an assistive device that allows patients in hospitals and nursing homes and people receiving home health care to be transferred between a bed and a chair or other similar resting places, by the use of electrical or hydraulic power. Sling lifts are used for patients whose Limited mobility, mobility is limited. Sling lifts are mobile (or floor) lifts or overhead lifts (ceiling- or wall-mounted, or using overhead tracks). The sling lift has several advantages. It allows heavy patients to be transferred while decreasing stress on caregivers, while also reducing the number of nursing staff required to move patients. It also reduces the chance of orthopedic injury from lifting patients. Another kind of sling lift, which is called a ceiling lift, can be permanently installed on the ceiling of a room in order to save space. Mistakes using patient lifts may result in se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
