The invention relates to a method for removing ammonia and dust from a waste gas that occurs during the production of fertilizers, preferably urea, in which method the waste gas is introduced into a first washer
where are exchange of gas between in external breath？“改进工作作风的任务非常繁重，中央八项规定是一个切入口和动员令。”以下关于中央八项规定的说法，正确的是（）。 “改进工作作风的任务非常繁重，中央八项规定是一个切入口和动员令。”以下关于中央八项规定的说法，正确的是（）。
to applying to a textile, fabric or canvas receptor element the remaining media portion having at least two permanent layers, wherein the receptor element has at least one surface with valleys or pores, or having at least one surface that is substantially smooth or textured that can be adhered...
In some examples, first source 40 may include a gaseous source of a nitrogen precursor, such as gaseous ammonia (NH3). In other examples, first source 40 may include a liquid or solid source of a nitrogen precursor, such as ammonium nitrate (NH4NO3; solid), an amide (liquid or solid),...
Modified in a suitable culture medium produced by the organisms can be rod alkoxy rods prepared by the method of fermentation alkoxy, wherein the ammonia level is kept low in order to avoid repression of enzymes such as urease.B·P·瓦伦丁...
As will be described in the next paragraphs, phytic acid is a very efficient char-former, further contributing to providing excellent flame retardant features when in combination with other carbon sources (like chitosan [78,79]) or with nitrogen-containing additives (such as melamine, urea, or ...