N 
Nickel, 427 
alloying properties, 431 
corrosion, 110 
degassing, 868, 917 
determination, 1013 
diffusion coefficient, 587 
diffusion of iron, 988 
grain growth, 988 
softening, 988 
welding, 358, 1133 
Nickel alloys, 429, 744 
chromium-, 770 
chromium-aluminum-, 770 
thermal conductivity, 191 
Nickel industry, 983 
Nickel oxide ores 
smelting, 428 
Nickel plating, 195 
Nickel powder, 635 
Nickel sheet 
production of high-purity, 
88 
Night glow, 131, 469 
Nilpotent principles 
linear groups, 419 
Niobium 
purification, 729 
Nitrate fertilizers, 993 
Nitration, 851 
Nitric acid 
production, 408 
Nitrides, 478, 589 
Nitriding, 722 
of steel, 801 
Nitro compounds, 561, 1003 
catalytic reduction, 557 
synthesis, 1103 
Nitro esters, 747 
Nitrofuran compounds, 452 
Nitrofurans, 690 
Nitrogen industry, 993 
Nitrogen oxides, 993 
Nitroglycerine, 747 
Nitrosyl chloride, 891 
Noble metals, 375 
Noctilucent clouds, 136, 1089 
Nogay language, 543 
Noise 
reduction, 28 
Nomographability, 528 
SUBJECT INDEX 
N 
Nondestructive testing, 44, 682, 
735, 785, 886, 1013 
use of radioactive isotopes, 
106 
Nondestructive-testing apparatus, 
heh, 
Nonferrous metallurgy, 19, 81, 
219, 222, 252, 4e7, 439, 522, 
552, 554, 680, 730, 744, Th6, 
125 Dp Vey Wess}, 1s!) 
Nonferrous metals, 207, 621, 756, 
988, 1002, 1086 
processing, 975 
Nonferrous-metals industry, 552 
automation, 882 
Nonferrous ores, 384, 428 
Nonlinear equations, 566, 657, 
1039 
Normalization, 55, lil 
Novae, 306 
Novomycalex, 39 
Nozzles, 635 
effects of gases, 86 
flow through, 635 
injection, 668 
laval, 534, 566 
Nuclear chemistry, 307 
Nuclear cross sections, 4h 
Nuclear decay, 151, 284 
Nuclear emulsions, 982 
Nuclear energy, 112, 307 
economics, 354 
utilization, 513 
Nuclear engineering, 464, 512, 
T47, 936 
Nuclear fission 
protons, 557 
Nuclear fission products, 412 
Nuclear levels, 444 
Nuclear magnetic relaxometer, 566 
Nuclear magnetic resonance, 566, 
683, 754, 829, 833, 944 
Nuclear-magnetic-resonance 
spectrometer, 566 
Nuclear-magnetometer circuits, 60 
Nuclear metallurgy, 729 
Nuclear particles, 801, 1096 
decay, 151 
Nuclear physical equipment, 849 
Nuclear physics, 21, 37, 41, 151, 
Lue, bb3, bbb, bas, 465, 47k, 
