Abstract: The present invention relates to a method for preparing a vinyl chloride-based polymer, including: bulk polymerizing a vinyl chloride-based monomer in a polymerization reactor to prepare a vinyl chloride-based polymer; and adding water and vapor to the polymerization reactor, and heating to remove an unreacted vinyl chloride-based monomer, wherein an addition amount of the water is 0.500 to 5.000 parts by weight based on 100 parts by weight of the vinyl chloride-based polymer.

Abstract: A lift apparatus for a vehicle includes a frame that provides an entry space that the vehicle required to be lifted enters and a lifting and lowering module that raises and lowers the vehicle in the entry space relative to the frame. The lifting and lowering module includes a wheel support portion that supports a wheel of the vehicle and a pusher that presses the wheel supported on the wheel support portion so that a lateral center portion of the entry space and a lateral center portion of the vehicle are aligned with each other.

Abstract: Provided are a process chamber cleaning apparatus and method in which the inside of a process chamber may be cleaned without damaging to an inner wall or a component of the process chamber. The process chamber cleaning apparatus comprising: a chamber housing; a substrate support installed inside the chamber housing, supporting a plurality of semiconductor substrates; a gas supply providing process gases; a first gas injector installed inside the chamber housing, connected to the gas supply, injecting etch gas, which is one of the process gases, into the chamber housing; and a controller controlling operations of the gas supply and the first gas injector, wherein the first gas injector injects the etch gas in a direction twisted at a predetermined angle from a central direction of the chamber housing.

Abstract: Disclosed are a foaming agent composition for polyurethane including glycerol carbonate as a chemical foaming agent and a physical foaming agent or a chemical foaming agent in a predetermined ratio (physicochemical foaming agent), and polyurethane foam prepared using the same. The polyurethane foam has very low global warming potential and ozone depletion potential and simultaneously improved properties such as thermal conductivity, water absorption, flexural strength, and compressive strength that meet the standard for thermal insulation materials made of rigid urethane foam, and is effective at preventing internal shrinkage.

Abstract: Provided is a reactor and carbonation equipment having the same, and the reactor includes: a plurality of chambers; a support structure for supporting the plurality of chambers; and a plurality of agitators disposed correspondingly to the plurality of chambers to agitate substances disposed in the plurality of chambers, wherein the plurality of chambers may include first to third chambers coupled sequentially to one another in a thickness direction of the reactor, each chamber including a body having a lower portion having the shape of a semi-cylinder and an opening formed on the body to communicate with the neighboring chamber or the outside, the first chamber having a first water introducing pipe for supplying water to the first body, the second chamber having a second water introducing pipe for supplying water to the second body and a first gas introducing pipe for supplying gas to the second body, and the third chamber having a second gas introducing pipe for supplying gas to the third body.

Abstract: This invention provides methods and compositions for producing reduced cholesterol animal foodstuffs and products by feeding livestock and other food-producing animals with feed supplemented with microbial cultures containing hypocholesterolemic compounds produced by microorganisms comprising said microbial cultures. The invention provides low cholesterol poultry, eggs, meat, whole milk, and dairy products.

Abstract: This invention provides methods and compositions for producing reduced cholesterol animal foodstuffs and products by feeding livestock and other food-producing animals with feed supplemented with microbial cultures containing hypocholesterolemic compounds produced by microorganisms comprising said microbial cultures. The invention provides low cholesterol poultry, eggs, meat, whole milk, and dairy products.