Gelatin desserts are desserts made with sweetened gelatin. They can be made by combining plain gelatin with other ingredients, or by using a premixed blend of gelatin with other additives. Popular brands of commercial mixes include Jell-O and Knox gelatin from Kraft Foods in North America, Royal in Argentina and Uruguay, Hartley's in the United Kingdom and Aeroplane Jelly in Australia.
A gel (from the lat. gelu—freezing, cold, ice or gelatus—frozen, immobile) is a solid, jelly-like material that can have properties ranging from soft and weak to hard and tough. Gels are defined as a substantially dilute crosslinked system, which exhibits no flow when in the steady-state. By weight, gels are mostly liquid, yet they behave like solids due to a three-dimensional crosslinked network within the liquid.
Silica gel is a granular, vitreous, highly porous form of silica and naturally formed from the silica plant. Silica gel is most commonly encountered in everyday life as beads packed in a vapor-permeable plastic. In this form, it is used as a desiccant to control local humidity in order to avoid spoilage or degradation of some goods. Because of poisonous dopants (see below) and their very high absorption of moisture, silica gel packets usually bear warnings for the user not to eat the contents.
Aerogel is a manufactured material with the lowest bulk density of any known porous solid. It is derived from a gel in which the liquid component of the gel has been replaced with a gas. The result is an extremely low-density solid with several remarkable properties, most notably its effectiveness as a thermal insulator and its extremely low density.
Polyacrylamide (IUPAC poly or poly) is a polymer (-CH2CHCONH2-) formed from acrylamide subunits that can also be readily cross-linked. Acrylamide needs to be handled using best laboratory practice (such as wearing appropriate gloves, lab coat etc. and having safe systems of work) to avoid poisonous exposure since it is a neurotoxin. Polyacrylamide is not toxic, but unpolymerized acrylamide can be present in the polymerized acrylamide. Therefore it is recommended to handle it with caution.
The sol-gel process, also known as chemical solution deposition, is a wet-chemical technique widely used in the fields of materials science and ceramic engineering. Such methods are used primarily for the fabrication of materials starting from a chemical solution which acts as the precursor for an integrated network (or gel) of either discrete particles or network polymers.
Aquamid is a soft volume filler. Aquamid is the trade name for a specific formulation of hydrophilic polyacrylamide gel. Available as an injectable implant, it is manufactured by the Danish company Ferrosan and is used as a subdermal filler for aesthetic purposes. It is comprised of 97.5% apyrogenic water bound to 2.5% cross-linked acrylamide polymer. Most commonly, it is injected under wrinkles and aging lines of the face such as the nasolabial folds, and forehead wrinkles.
The Qajar dynasty Qajar was an Iranian royal family of Turco-Persian origin who ruled Persia (the country now known as Iran) from 1794 to 1925. The Qajar family took full control of Iran in 1794, deposing Lotf 'Ali Khan, the last of the Zand dynasty, and re-asserted Persian sovereignty over parts of the Caucasus. In 1796 Mohammad Khan Qajar was formally crowned as shah.
The NZR DX class is a class of 49 Co-Co diesel-electric locomotives that currently operate on New Zealand's national railway network. Built by General Electric in Erie, Pennsylvania, USA, they were introduced to New Zealand between 1972 and 1976. The class is based on the General Electric U26C class, a narrow-gauge version of the GE U23C class. The U26C class is also used in South Africa (Class 34), Brazil, and Kenya.