Nitrogen supply

Alternatively, use a wide tube with sealed-on side arm insert the dropping funnel into the wide tube and connect the side arm to the nitrogen supply. 

Fig. 1. Approximate economic range of nitrogen supply technologies (at median site conditions). Shaded area represents bulk liquid or PSA membrane plus...

The nitrogen supply used to purge the metal cabinet was also used to blow out the dryers. When the iiiirngcn supply pressure fell occasionally, solvent from the dryers entered ihrtmgh leaking valves into the nitrogen supply line,, ind into the metal cabinet. Low nitrogen pressure allowed air diffusion into the cabinet. 

On one group of tanks the reducing valve on the nitrogen supply was installed at ground level (Figure 5-17). Hydrocarbon vapor condensed in the vertical section of the line and effectively isolated the tank from the nitrogen blanketing. 

An explosion and fire occurred on a fixed-roof tank that was supposed to be blanketed with nitrogen. After the explosion, it was found that the nitrogen supply had been isolated. Six months before the explosion the manager had personally checked that the nitrogen blanketing was in operation. But no later check had been carried out [8]. 

Some of the incidents described in Section 12.3.2 may fall into this category. Most of the incidents of this type, however, have occurred during construction when one group of workers has, unknown to others, connected up the nitrogen supply to a vessel. The following is an account of a particularly tragic accident of this type. 

Traces of oxygen in nitrogen used for inerting can react with some products, such as butadiene and acrolein, and cause explosive polymerization. In one case, unknown to the acrolein plant, a trace of oxygen was deliberately added to the nitrogen supply at the request of another plant. 

Kikby, E. A. (1981). Plant growth in relation to nitrogen supply. In "Terrestrial Nitrogen Cycles" (F. E. Clark and T. Rosswall, eds). Ecological Bulletin 33, 249-271. Swedish Natural Science Research Council, Stockholm. 

Ferrar, P.J. Osmond, C.B. (1986). Nitrogen supply as a factor influencing photoinhibition and photosynthetic acclimation after transfer of shade-grown Solanum dulcamara to bright light. Planta, 168, 563-70. 

Low pressure nitrogen blanket supply High pressure nitrogen supply Vacuum ]ine Water supply... 

Leser, C. and Treutter, D. (2005). Effects of nitrogen supply on growth, contents of phenolic compounds and pathogen (scab) resistance of apple trees , Physiologia Plantarum, 123, 49-56. 

Machines of this type were widely used for laboratory air or nitrogen supplies before commercial supplies became more available and convenient. LN2 was usually produced from air by distillation or sorption, eliminating oxygen for safety reasons. 

A protein that is unduT7 rich in the ten essential amino acids would not provide sufficient nitrogen for other metabolic processes without obligatory catabolism of the essential amino acids. Thus, the proportion of the total nitrogen intake that essential amino acids form indicate how a given protein fulfills nutritional requirements for proteins. This proportion, the E/T ratio (54), indicative of the amount of protein nitrogen supplied by essential amino acids, is (in g of essential amino acids per g of nitrogen)... 

Candle filters. These consist of multiple high-temperature ceramic or sintered-metal candles fitted within a plenum and a nitrogen supply for online periodic back flushing. Captured particulate matter is discharged into a steel container through a rotary air lock. The particulates are processed in the MPT to ensure 5X decontamination. 

We can visualize these heterocycles as similar to the simpler aromatic systems pyrrole, furan and thiophene. For example, in imidazole, each carbon and nitrogen will be sp hybridized, with p orbitals contributing to the aromatic rt system. The carbon atoms will each donate one electron to the rt system. Then, as in pyrrole, the NH nitrogen supplies two electrons, and, as in pyridine, the =N- supplies one electron and retains a lone pair. Oxygen or sulfur would also supply two electrons, as we saw in furan and thiophene. 

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