In the General Electric—Allegheny Ludlum (GE—AT,) process (18), boron and nitrogen with sulfur or selenium are used as grain-growth inhibitors.  [c.370]

D. B. Ludlum, A. W. Anderson, and C. E. Ashby,/ Mm. Chem. Soc. 80, 1380 (1958).  [c.422]

Fig. 2 The influence of the reagent concentration on the sensitivity of detection detection of equal amounts of luteolin with basic lead acetate solution that was (A) undiluted, (B) diluted 1 + 4 and (C) diluted 1 + 50. Fig. 2 The influence of the reagent concentration on the sensitivity of detection detection of equal amounts of luteolin with basic lead acetate solution that was (A) undiluted, (B) diluted 1 + 4 and (C) diluted 1 + 50.
Lithium and Litliium Compounds, 84  [c.338]

The simplest and most commonly applied modification metliod is ion exchange [24]. By far tlie vast majority of studies regarding ion exchange of zeolites were carried out in aqueous solutions. Ion exchange processes are described by equilibrium ion-exchange isotlieniis tliese relate tlie equivalent fraction of tlie ion in tlie zeolite to tliat in solution. Zeolites exliibit different selectivities for ion exchange depending upon factors such as tlie silicon-to-aluniiniuni ratio of tlie zeolite, tlie size, charge and polarizability of tlie cation, tlie solvation medium and tlie size and stability of tlie solvation sphere. For example, tlie selectivity series for exchange of monovalent cations into NaY is Ag T1 > Cs > Rb > K > Na > Li, litliium being tlie smallest cation but witli tlie largest hydration sphere. The presence of ion exchange positions in small cages such as the sodalite cage, which is accessible tlirough a 6-ring window witli an effective pore diameter of about 2.5A, may hinder or exclude tlie exchange of certain cations  [c.2784]

Thus o-hydroxyphenyl-llthium cannot be obtained from o-bromophenol and lithium but, under proper conditions, o-bromophenol reacts with n-butyl-lithium to give a good yield of the lithium salt of o-hydroxyphenyl-hthium. An interesting application is to the preparation from m-bromochlorobenzene and M-butyl-lithlum of w-chlorobenzoic acid—an expensive chemical  [c.929]

Traditionally, secondary battery systems have been based on aqueous electrolytes. Whereas these systems have excellent performance, the use of water imposes a fundamental limitation on battery voltage because of the electrolysis of water, either to hydrogen at cathodic potentials or to oxygen at anodic potentials. The appHcation of nonaqueous electrolytes affords a significant advantage in terms of achievable battery voltages. By far the most actively researched field in nonaqueous battery systems has been the development of practical rechargeable lithium batteries (1). These are systems that are based on the use of lithium [7439-93-2] Li, or a lithium alloy, as the negative electrode (see LiTHlUM AND LITHIUM COMPOUNDS).  [c.582]

Lithium. Several processes for lithium [7439-93-2], Li, metal production have been developed. The Downs cell with LiCl—KCl electrolyte produces lithium ia much the same manner as sodium is produced. Lithium metal or lithium—aluminum alloy can be produced from a mixture of fused chloride salts (108). Granular Li metal has been produced electrochemically from lithium salts ia organic solvents (109) (see LiTHlUM AND LITHIUM compounds).  [c.80]

When radiating and receiving surfaces are not in parallel, as in rotary-ldln devices, and the sohds burden bed may be only intermittently exposed and/or agitated, the calculation and procedures become veiy complex, with photometric methods of optics requiring consideration. The following equation for heat transfer, which allows for convective effects, is commonly used by designers of high-temperature furnaces  [c.1062]

Ceramic tunnel kilns handling large irregular-shaped objects must be equipped for precise control of temperature and humidity conditions to prevent cracking and condensation on the product. The internal mechanism causing cracking when diying clay and ceramics has been studied extensively. Information on ceramic tunnel-ldln operation and design is reported fully in publications such as The American Ceramic Society Bulletin, Ceramic Industry, and Transactions of the British Ceramic Society.  [c.1199]

A discussion of retention time in rotary Idlns is given in Brit. Chem. Eng., 27-29 (Januaiy 1966). Rotary-ldln heat control is discussed in detail by Bauer [Chem. Eng., 193-200 (May 1954)] and Zubrzycki [Chem. Can., 33-37 (Februaiy 1957)]. Reduction of iron ore in rotaiy Idlns is described by Stewart [Min. Congr J., 34—38 (December 1958)]. The use of balls to improve solids flow is discussed in [Chem. Eng., 120-222 (March 1956)]. Brisbane examined problems of shell deformation [ Min. Eng., 210-212 (Februaiy 1956)]. Instrumentation is discussed by Dixon [Ind. Eng. Chem. Process Des. Dev., 1436-1441 (July 1954)], and a mathematical simulation of a rotaiy Idln was developed by Sass [Ind. Eng. Chem. Process Des. Dev., 532-535 (October 1967)]. This last paper employed the empirical convection heat-transfer coefficient given previously, and its use is discussed in later correspondence [ibid., 318-319 (April 1968)].  [c.1208]

Heat hardening of green iron-ore pellets is accomplished in a vertical shaft furnace, a traveling-grate machine, or a grate-plus-ldln combination (see Ball et al., op. cit.).  [c.1903]

For a recent review on the sponge phase, see G. Porte. Curr Opin Coll Interf Sci L345-349, 1996.  [c.674]

Class D Fires. The last classification is reserved for fires occurring in combustible metals such as niagnesium, litliium, sodium, and aluminum. Class D fires require special e.xliiiguisliiiig metliods and agents, such as the grapliite-based type.  [c.215]

Lead hydroxide Litliimn amide Methyl ethyl pyridine Sodamide Sodium cyanide Nitrogen dioxide Nitric acid  [c.262]

See pages that mention the term Luteolin : [c.928]    [c.811]    [c.580]    [c.539]    [c.85]    [c.547]    [c.549]    [c.507]    [c.399]    [c.548]    [c.1615]    [c.72]    [c.72]    [c.1]    [c.50]    [c.285]    [c.15]    [c.16]    [c.22]    [c.26]    [c.28]    [c.28]    [c.29]    [c.30]    [c.30]    [c.30]    [c.30]    [c.31]    [c.35]    [c.36]    [c.36]    [c.37]    [c.59]   
Thin-layer chromatography Reagents and detection methods (1990) -- [ c.323 , c.324 ]