"Nitrocalcite" Natural Recordings by Native Speakers
Nitrocalcite is a mineral formed when calcium carbonate (calcite) reacts with nitrous acid. It is a white or yellowish-white mineral that is usually found in the form of tiny crystals or aggregates.
Nitroamine is a type of organic compound that is derived from an amine and contains a nitro (-NO2) group. It is a highly reactive and explosive substance that is often used in the production of plastics, dyes, and pharmaceuticals.
Nitroarenes are a class of organic compounds that are derived from benzene and contain one or more nitro (-NO2) groups. They are typically obtained through the nitration of benzene or its derivatives. Nitroarenes are widely used as precursors to various dyes, pigments, and pharmaceuticals. They also have applications in the production of plastics, rubber, and other synthetic materials.
Nitrobacter is a genus of Gram-negative, aerobic bacteria that are known for their ability to oxidize nitrite (NO2-) to nitrate (NO3-). They play a crucial role in the nitrogen cycle, helping to transform nitrogen-based compounds in the environment. Nitrobacter species are typically found in soil, aquatic ecosystems, and wastewater treatment plants, where they contribute to the degradation of organic matter and the removal of excess nitrogen from the environment.
Nitrobacteriaceae is a family of bacteria that are capable of oxidizing ammonia to nitrite, playing a crucial role in the nitrogen cycle. They are typically gram-negative, non-sporulating, and found in a variety of environments, including soil, water, and the guts of certain insects and animals.
Nitrobenzene is a toxic, pale yellow liquid organic compound with a strong odor, used as a solvent and an intermediate in the production of dyes, antioxidants, and other chemicals.
Nitrocellulose is a highly flammable and explosive compound composed of cellulose treated with a mixture of nitric and sulfuric acids. It is commonly used in the manufacture of lacquers, paints, and varnishes, as well as in the production of gunpowder and ordnance. Nitrocellulose is also used in some medical applications, such as in the production of nitroglycerin tablets and suppositories. In addition, it is used as an ingredient in some film and photographic products, such as film base and developer solutions.
Nitrofurazone is a type of antibiotic medication used to treat bacterial infections in humans and animals. It works by killing bacteria and preventing them from multiplying. Nitrofurazone is often used to treat skin and soft tissue infections, wound infections, and respiratory infections.
Nitrogenase is an enzyme complex found in certain microorganisms, such as Clostridium pasteurianum and Azotobacter vinelandii, that plays a crucial role in the nitrogen cycle. It catalyzes the conversion of atmospheric nitrogen (N2) into ammonia (NH3), which is then used by plants and animals as a nutrient.<br><br>A more detailed explanation of nitrogenase's function involves its ability to reduce the triple bond between the two nitrogen atoms in N2, releasing energy and forming a two-electron bond, allowing the complex to bind to the enzyme and stabilize the transition state. Additionally, the process involves the step-wise addition of electrons and protons to form ammonia, which is then released from the enzyme as a byproduct of the nitrogenase reaction.<br><br>Nitrogenase is responsible for fixing approximately 180 million tons of atmospheric nitrogen per year, contributing significantly to the global nitrogen cycle.
The word "nitrogenised" is the past participle of the verb "nitrogenize", which means to treat or preserve something, typically food, by removing oxygen and replacing it with nitrogen gas, especially using a vacuum. This process is often used to extend the shelf life of perishable items by preventing the growth of bacteria and other microorganisms.