Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About
0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | a | b | c | d | e | f | g | h | i | j | k | l | m | n | o | p | q | r | s | t | u | v | w | x | y | z

   |<      <<      >>     > |    


V shows metal distributions in two other domestic tar sand fractions. In the Battle Creek bitumen from Wyoming, bitumen metals and porphyrins are concentrated in the asphaltenes, as expected. Fractions obtained from the Edna, California outcrop have vanadium-to-

V shows redox potentials for ferric complexes of a series of natural and synthetic siderophores. The first coordination shell of the complex formed between iron and siderophore

V shows residue levels of chlordane and heptachlor in soils and air, respectively, from crawl-space constructed dwellings built on sandy soils. Soil residues of chlordane and heptachlor in the 0 to 10-cm depth averaged 1052 , respectively.

V shows results obtained on tetramethylene terephtha-late fibers, heat treated at 220 C for different times in a relaxed state. There again, we observe a great improvement in the amount of the crystalline material but also increasing distortions.

V shows some of the work we did with variation in the basic pyridazine structure, and also with related nitrogen heterocycles. Moving

V shows some sterically crowded salicylic acid derivatives. Compound 1 is bibenzyl and is included for comparison. The Air value indicates some degree of interaction between the aromatic rings, which can be considered as an intramolecular hydrophobic effect. Log F is known for both salicylic acid and for phenyl methyl sulfide, and these values can be added to give the expected value for Compound 2. Experimentally, log F is smaller than this, so some intramolecular interaction probably occurs.

V shows some systems with Intermedicate strength Inter-

V shows some transuranic radionuclide concentrations found in near shore sediment close to Cape Cod, Mass. The total transuranic content of these shallow sediments agrees well with that predicted as being delivered to the latitude, arguing that the core segment represents part of the period of high 23sp delivery from SNAP 9A fallout. The implication is that all of the delivered transuranic element is rapidly deposited in the sediment in contrast to the soluble fallout radionuclides.

V shows some typical criteria used for evaluating the potential approximations for packed bed reactor modeling. Many other criteria are also used and some of these are referenced in this chapter.

V shows that 13 of a dose of tetralin is excreted in the bile of rats. Tetralin is metabolized in the alieyclie ring to give a- and jS-tetralol and tetralin-1,2-dioI .

V shows that certain dynamic properties of lithium polymers are insensitive to temperature over the range 50 to 100 C. Values of internal friction and dynamic modulus for nearly all synthetic polymers decrease appreciably over this

V shows that Formulation C had a much lower viscosity than the other two and contained 20 w v dalapon in the aqueous phase. In the absence of dalapon, the viscosity of the emulsion was increased threefold, being similar to the viscosity of Formulations A and B. This effect is presumably caused by interaction between the salt and the emulsifier present. The presence of toxicant does not always reduce viscosity in fact, the presence of 20 w v endrin in the oil phase of Formulation A will increase its viscosity slightly.

V shows that higher concentrations of both substrate and GSH were needed for the fish transferases to exhibit maximal activity, compared with rat. Indeed the fish transferase values for OSH are In the same region as the reported concentrations of GSH In liver of several fish species as shown In Table VI. Thus, small changes In the GSH content of liver could markedly alter the ability of the fish to detoxify chemicals by conjugation with OSH.

V shows that in jellies, jams, and preserves a choice must be made between sucrose and invert sugar sirup as one of the required sweetening agents.

V shows that in some data sets the log transformation is acceptable, but this is usually as a result of less perfect data and not an inherent quality.

V shows that in the Platformate a fairly uniform octane number is attained over the entire boiling range as compared to a decreasing octane number over the boiling range for the thermal reformate. This characteristic of the Platformate is particularly desirable because the octane number of the fuel to the various engine cylinders is relatively uniform regardless of intake manifold distribution effects.

V shows that pork liver sialyltransferase will catalyze the transfer of sialic acid to galactosyl- have shown that the same enzyme or enzymes in pork liver

V shows that some activity is observed for metal salts in lethality studies. These metal ions are not as active as the inert complexes in the lethality assay, and none of these ions has been found to be active in reversion studies. Perhaps the difference is that the metal ions rapidly come to equilibrium in the cell and form kinetically labile and non-toxic complexes with DNA. As strand separation occurs, the labile ions that are on the DNA can be rapidly displaced and thus are not able to interfere with replication. On the other hand, the inert ions undergo substitution at rates which are slow compared to cell division. When they undergo ligand substitutions and become attached to DNA, they remain fixed to the DNA long enough to cause errors during replication.

V shows that the amount of adsorption onto Silastic from plasma is significantly depressed below its saturation value measured in buflFer presumably because of competition from other components of the plasma. The diflFerence in adsorption from the two plasma pools may result from the increased fibrinogen concentration in one pool which would allow more eflFective competition for adsorption onto Silastic and result in enhanced adsorption. Since the adsorption of fibrinogen onto poly Silastic as it apparently does on adsorption onto Silastic itself.

V shows that the cross sections estimated by the two methods agree well in CgHg quenching and probably also in CgHg quenching but not in C4 or in CH3CD2CH3 quenching. This confirms previous work. From

V shows that the position of the ck-W canonical form and a subsequent increase in available electron density for the n-acidic carbonyls, which leads to a decrease in the frequency of vco-

V shows that values for the threshold spark initiation energy for various primary explosives depend on the physical and electrical characteristics of the discharge system. They are also affected by such factors as the relative humidity and the particle size, but it is possible to draw some general conclusions

V shows the activation energies for the elimination of hydrogen sulfide from cysteine and glutathione. The fact that the activation energy for the release of H2S from glutathione is lower than for cysteine again suggested the structural effect on the release of hydrogen sulfide. The result also indicate that pH affected the activation energy for the elimination. As the pH increased from

V shows the amounts of active ingredient in the amounts of the formulations applied by volunteers. These data were taken directly from Table IV and are presented to give the reader some impression of the amounts of carbaryl used in these trials. The data can be used when comparing the use of the three formulations providing the exposures discussed below. They do show that far more carbaryl was used In 15 minutes when applied as a 5 dust than as either of the two formulations applied as a sprayed-on suspension.

V shows the comparative analysis of the headspace of living and picked rosemary and a typical commercial oil.



   |<      <<      >>     > |    

SEARCH



© 2024 chempedia.info