An Advisory Circular is a non-binding written communication that provides guidance on how to manage changes or interpret regulations, often used in transportation and aviation. They can be accessed for free or for a fee, and may be published by government regulatory authorities or companies. They clarify specific changes in regulations and are numbered for […]
Test pilots fly experimental aircraft and provide feedback to engineers. They require extensive experience, skill, and follow precise test plans. Test pilots must be safety conscious and methodical. The profession originated in WWI and evolved to become more responsible. Test pilots must be able to handle sensory input and respond immediately to problems. Their work […]
The whiskey sour is a classic cocktail made with whiskey, lemon juice, and sugar. Variations include using different liqueurs or adding additional ingredients. It is typically served in a small stemmed glass and has experienced a resurgence in popularity. The Pisco Sour is a similar cocktail made with pisco brandy, lime or lemon juice, simple […]
Power transmission towers are metal structures that hold transmission lines off the ground to transport energy from generating sources to substations. They vary in design and height, and must withstand environmental loads and keep transmission lines separate. Insulators prevent contact between conductors and the tower, and aluminum conductors can reduce the need for towers. However, […]
Air purifiers remove particles, gases, and chemicals from the air in a specific area. They are essential in facilities with airborne contaminants, such as textile factories and laboratories. Purifiers use filters, including HEPA filters, to remove contaminants and pump in fresh air. The size and complexity of the system depend on the space and type […]
GDP is the value of goods and services produced within a country or region in a given period. It includes spending by individuals, businesses, and governments, as well as the net trade balance and certain intangibles. There are two variations of quarterly GDP values: nominal and real. GDP per capita is used to determine the […]
An engine thermostat regulates coolant flow in liquid-cooled engines, and can warm up the engine quickly. A typical thermostat is made up of a spring-loaded valve actuated by a wax pellet. A stuck thermostat can cause poor fuel economy, overheating, and other problems. Replacing a thermostat is usually easy. An engine thermostat is a component […]
Beef Wellington is a classic dish made with beef tenderloin, pate, duxelles, and flaky pastry. It is often served in upscale restaurants and can be ordered for one or two people. The dish’s origins are uncertain, but it is believed to be named after the Duke of Wellington. Variations include using filet mignon and other […]
An engine pulley is a wheel on a vehicle’s engine that drives peripheral devices through a serpentine belt system. Different pulleys have different functions, including idlers that guide the belt and harmonic balancers that reduce vibrations. All pulleys must be made of high-quality metals and designed to work with specific belts. An engine pulley is […]
Microlam, also known as laminated veneer lumber (LVL), is a strong type of engineered wood made by gluing thin sheets of wood together in alternating directions. It is used for carrying beams, joists, and headers in construction projects and is straighter and smoother than milled lumber. Microlam saves space and allows for fewer support posts, […]
Chronic back pain without a physical cause may be due to tension myositis syndrome (TMS), caused by mental stress. TMS is difficult to treat using traditional methods, but treatments that embrace the mind-body connection have been successful. TMS is diagnosed when a specific cause of pain cannot be identified. Unconscious stress is often the cause […]
A deprivation index measures poverty in an area by considering factors such as income, consumption, education, health, and crime. It helps researchers understand poverty and inform government authorities about effective programs. A deprivation index is a measure used to determine how much human deprivation, or poverty, exists in a given area. The obvious aspect that […]
Freight transportation moves goods from one place to another, including commercial products and mail. It can be done by land, air, or sea, with air being the fastest but most expensive. Freight companies offer services to both individuals and businesses, with cost factors including volume, weight, and nature of the product. Freight transportation is a […]
French silk cake is a creamy, chocolatey cake served cold or at room temperature. It’s easy to make at home and can be modified with various ingredients. The recipe originated in the American South and is typically served with whipped cream. It’s made with a graham cracker crust and a plain filling of butter, sugar, […]
Ductwork is used in forced air systems to heat, ventilate, and cool buildings. Ducts are tubes that carry air from the furnace or air conditioner throughout the building. Ducts are usually made of tin, sheet metal, fiberglass, or flexible plastic. They consist of a plenum, conduit, and register. A distribution box can be used to […]
Freight trains are used to transport cargo and have advantages such as low energy use and the ability to pull heavy loads. They can carry cargo in various ways, including shipping containers. Some companies use “flat car towing” to combine trucking and rail travel. Railroads have adapted to attract customers by supporting containerization and offering […]
Felling trees is a dangerous job that should be left to professionals. It involves planning, using a chainsaw, and considering factors such as the slope and lean of the tree. Falling trees can also pose risks such as getting stuck in other trees or structures and causing debris to fly. Extreme caution and proper protective […]
The Independent Order of Odd Fellows is a service organization in North America with four membership criteria, including belief in a Supreme Being and loyalty to one’s country. The organization has different degrees of membership and was founded in 1819. The Rebekahs are an offshoot of the organization, and both groups contribute to service projects […]
The healthcare industry includes hospitals, doctors, nurses, administrators, lawyers, insurance companies, psychiatrists, psychologists, and counselors who work to ensure physical and mental health. Insurance companies help pay for medical care, but there is controversy around treating healthcare as a business. The healthcare industry typically refers to all individuals and businesses that are primarily concerned with […]
A heliport is a dedicated airfield for helicopters, with helipads, hangars, and service stations. It is usually located near a conventional airport and may include car rental agents, flight schools, and even a restaurant. Rural heliports may be used for agricultural spraying or by law enforcement and search and rescue teams. A heliport is a […]
