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The liquid nitrogen wash has two principle functions: [1] Removal of impurities such as carbon monoxide, argon and methane from the crude hydrogen gas; Addition of the required stoichiometric amount of nitrogen to the hydrogen stream to achieve the correct ammonia synthesis gas ratio of hydrogen to nitrogen of 3 : 1
In economics, shrinkflation, also known as package downsizing, weight-out, [2] and price pack architecture [3] is the process of items shrinking in size or quantity while the prices remain the same. [ 4 ] [ 5 ] The word is a portmanteau of the words shrink and inflation .
reduces the water content by 5-10%; decreases the concrete porosity; increases the concrete strength by up to 25% (as less water is required for the concrete mixture to remain workable) increases the workability (assuming the amount of free water remains constant) reduces the water permeability (due to less water being used)
This type of washer is especially effective as a lock washer when used with a soft substrate, such as aluminium or plastic, [8] and can resist rotation more than a plain washer on hard surfaces, as the tension between washer and the surface is applied over a much smaller area (the teeth). There are four types: internal, external, combination ...
Reducing, neutral and oxidizing oxyacetylene flames. A flame is affected by the fuel introduced and the oxygen available. A flame with a balanced oxygen-fuel ratio is called a neutral flame. The color of a neutral flame is semi-transparent purple or blue. [1] This flame is optimal for many uses because it does not oxidize or deposit soot onto ...
Lithium aluminium hydride (Li Al H 4), a very strong reducing agent; Red-Al (NaAlH 2 (OCH 2 CH 2 OCH 3) 2), a safer and more stable alternative to lithium aluminum hydride; Hydrogen without or with a suitable catalyst; e.g. a Lindlar catalyst; Sodium amalgam (Na) Sodium-lead alloy (Na + Pb) Zinc amalgam (Zn) (reagent for Clemmensen reduction ...
Belleville washer. A Belleville washer, also known as a coned-disc spring, [1] conical spring washer, [2] disc spring, Belleville spring or cupped spring washer, is a conical shell which can be loaded along its axis either statically or dynamically. A Belleville washer is a type of spring shaped like a washer.
A washing machine (laundry machine, clothes washer, washer, or simply wash) is a machine designed to launder clothing. The term is mostly applied to machines that use water. Other ways of doing laundry include dry cleaning (which uses alternative cleaning fluids and is performed by specialist businesses) and ultrasonic cleaning.