Motorjets, an early type of propulsion system, use a separate power source to drive a compressor which forces air into a combustion chamber, providing thrust. Although considered obsolete, hobbyists still use motorjet technology. The Caproni Campini N.1 and the AI Mikoyan-MI Gurevich I-250(N) are examples of aircraft that employed motorjets. Turbojet technology became the norm […]
Hefekranz and Hefezopf are sweet yeast breads popular in Germany, Austria, and Switzerland during holidays. They are made with flour, milk, sugar, yeast, butter, and eggs, and can be decorated with raisins and almond flakes. The dough is kneaded and left to rise before being braided and baked. In the Central European nations of Germany, […]
Thermoplastics are plastic made from polymer resins that become liquid when heated and hard when cooled. They are recyclable and come in many types, including polyurethane, polypropylene, polycarbonate, and acrylic. They differ from thermosetting plastics and elastomers and can be made more pliable with plasticizers. They are used in everyday life, such as in sports […]
A trawler yacht is a recreational boat inspired by trawling boats, with a displacement hull for heavy loads and longer voyages, a raised pilot deck for visibility, and spacious interior space for up to eight people. It can be custom-built or restored, and yacht charters are available. A yacht is a boat that is used […]
Textile factories produce fabrics from raw materials, which are processed, spun, dyed and turned into textiles. They can specialize in certain materials and sell to the public or other manufacturers. Modern mills are mechanized, but can be dangerous and polluting. Staff includes production workers, maintenance crews, supervisors, textile designers and engineers. A textile factory is […]
A gearbox transfers energy and increases torque while reducing speed. It is used to create a right angle change of direction and has a fixed gear ratio. A transmission with more gears can increase torque. Wind turbines have multiple gears and stages. Manual transmissions have sliding link and constant mesh systems. A gearbox is a […]
An artesian well uses pipes to bring pressurized groundwater to the surface, filtered naturally by porous rock as it penetrates the earth to reach the aquifer. Artesian wells are found worldwide, and the first known well was drilled in 1126 by monks using percussion drilling. An artesian well is a pumpless water source that uses […]
A summary of qualifications is a short paragraph at the top or bottom of a resume that highlights a job seeker’s skills and experience. It can also be used in a cover letter to encourage the recruiter to review the attached resume. The summary should be concise and crafted for maximum impact. A closing qualifications […]
The HANS device is a head and neck support system designed to protect drivers from injury in high-speed collisions. It was created in the 1980s to prevent skull fractures and other injuries. The device is made up of a shoulder support, helmet anchors, and straps, and is now required driver’s equipment on most professional auto […]
Stem walls are concrete and steel structures that connect a building’s foundation to its vertical walls, providing stability and protection from soil moisture and insects. They are commonly used in residential and public buildings but not always necessary for raised designs. Stem walls are support structures that are used as a means of joining a […]
King studs are used in post and beam construction to support door and window openings. They increase structural stability and are often preferred by contractors. They sit outside the frame and hold the headers, with additional support from jack pins. Architects must consider king stud requirements when drafting plans. A king stud is a specialized […]
Ambohimanga in Madagascar is a UNESCO World Heritage Site with ruins of a Merina palace. The Merina kingdom conquered neighboring tribes and unified Madagascar. The Rova, the palace of King Adrianamoinimerina, is a well-fortified example of 18th-century architecture with interesting features such as a large wenge wood pole and large baths. Madagascar is not a […]
Cavernous malformations are clusters of enlarged blood vessels that can occur anywhere in the body, but are of particular concern in the brain and spine. They can be genetic or related to trauma, and symptoms include headaches, seizures, and neurological problems. Treatment options vary depending on the location and severity of the malformation. A cavernous […]
Cycle billing involves updating customer balances on a daily basis and issuing a single invoice at the end of a billing period. It is used by utility and telecommunications companies and offers benefits for both suppliers and customers, including time and cost savings. Cycle billing is typically used for ongoing customer-supplier relationships and cannot be […]
Front axle assemblies connect the front wheels of a vehicle and can include steering and suspension components. Drive axles deliver torque to the wheels, while dead axles support the weight of the vehicle. The design and function of front axle assemblies vary depending on the vehicle type. Portal axles are useful for off-road vehicles but […]
Manchester tart is a traditional British dessert made with shortcrust pastry, raspberry jam, custard, and coconut. It is often served in English schools and can be customized with different jam flavors or fresh fruit. A Manchester tart is a dessert consisting of a pastry crust topped with a layer of raspberry jam, spread with custard […]
Midget submarines are small, military submarines with limited amenities and ranges. They are launched by a mother ship and used for military purposes such as launching torpedoes or spying. They are cheaper and easier to maneuver than full-size submarines and can be difficult for enemy ships to detect. Examples can be seen in maritime and […]
Neuropsychopharmacology combines psychopharmacology and neuroscience to study the effects of drugs on the brain and behavior. It aims to develop new drugs to treat mental health conditions and neurological disorders by studying neurotransmitter activity. Critics argue that there is not enough conclusive research to determine the causes of abnormal brain impulses. Neuropsychopharmacology is a field […]
Oriented strand board (OSB) is an engineered wood board made of resin-bonded wood strands. It is commonly used in construction and furniture manufacturing. OSB is different from MDF, particleboard, and plywood. It is made by combining wood and resin veneer under high temperature and pressure. OSB is environmentally friendly and can be recycled. Builders should […]
Flood irrigation is an old technique where water is flooded onto fields to irrigate crops. It can be wasteful and inefficient, but has different styles like basin, furrow, and pulse irrigation. It can also attract pests and mosquitoes. It is used in residential landscaping in areas with abundant water resources. Flood irrigation is an irrigation […]
