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Subject reductive

Jet lag is especially common among frequent travelers and airplane cabin crews. Typical symptoms of jet lag may include daytime drowsiness, insomnia, frequent awakenings, and gastrointestinal upset. Clinical studies with administration of melatonin have reported subjective reduction in daytime fatigue, improved mood, and a quicker recovery time (return to normal sleep patterns,... [Pg.1549]

Chronic administration of a monoamine oxidase inhibitor causes a subjective reduction in the effects of LSD, perhaps due to differential changes in central serotonin and dopamine receptor systems (66). [Pg.83]

There is no elimination rule for binder p. This task will be fulfilled via garbage collection and since pl] does not modify the type of the expression, then it causes no harm to the subject reduction property. [Pg.159]

The idea is that the programmer does not use p binders they are completely managed by evaluation procedure. It causes no problem for subject reduction since there is no effect on the type of the term. [Pg.159]

In the first step, a screening process will be applied to separate the major potential hazards these will be addressed in more detail. QRA techniques are used to evaluate the extent of the risk arising from hazards with the potential to cause major accidents, based on the prediction of the likelihood and magnitude of the event. This assessment will be based on engineering judgement and statistics of previous performance. Where necessary, risk reduction measures will be applied until the level of risk is acceptable. This of course is an emotive subject, since it implies placing a value on human life. [Pg.69]

A large variety of organic oxidations, reductions, and rearrangements show photocatalysis at interfaces, usually of a semiconductor. The subject has been reviewed [326,327] some specific examples are the photo-Kolbe reaction (decarboxylation of acetic acid) using Pt supported on anatase [328], the pho-... [Pg.738]

It has been observed by [27, 24] that the equations of motion of a free rigid body are subject to reduction. (For a detailed discussion of this interesting topic, see [23].) This leads to an unconstrained Lie-Poisson system which is directly solvable by splitting, i.e. the Euler equations in the angular momenta ... [Pg.356]

Used particularly for ethers. Cannot be used for any compound affected by alkalis, or easily subject to reduction (owing to the hydrogen evolved during dehydration). [Pg.24]

Metallic sodium. This metal is employed for the drying of ethers and of saturated and aromatic hydrocarbons. The bulk of the water should first be removed from the liquid or solution by a preliminary drying with anhydrous calcium chloride or magnesium sulphate. Sodium is most effective in the form of fine wire, which is forced directly into the liquid by means of a sodium press (see under Ether, Section II,47,i) a large surface is thus presented to the liquid. It cannot be used for any compound with which it reacts or which is affected by alkalis or is easily subject to reduction (due to the hydrogen evolved during the dehydration), viz., alcohols, acids, esters, organic halides, ketones, aldehydes, and some amines. [Pg.143]

Reduction of arenes by catalytic hydrogenation was described m Section 114 A dif ferent method using Group I metals as reducing agents which gives 1 4 cyclohexadiene derivatives will be presented m Section 1111 Electrophilic aromatic substitution is the most important reaction type exhibited by benzene and its derivatives and constitutes the entire subject matter of Chapter 12... [Pg.438]

A more important effect of prestressiag is its effect on the mean stress at the bore of the cylinder when an internal pressure is appHed. It may be seen from Figure 6 that when an initially stress-free cylinder is subjected to an internal pressure, the shear stress at the bore of the cylinder increases from O to A. On the other hand, when a prestressed cylinder of the same dimensions is subjected to the same internal pressure, the shear stress at the bore changes from C to E. Although the range of shear stress is the same ia the two cases (distance OA = CE), the mean shear stress ia the prestressed cylinder, represented by point G, is smaller than that for the initially stress-free cylinder represented by point H. This reduction in the mean shear stress increases the fatigue strength of components subjected to repeated internal pressure. [Pg.81]

Chemical Properties. Lignin is subject to oxidation, reduction, discoloration, hydrolysis, and other chemical and enzymatic reactions. Many ate briefly described elsewhere (51). Key to these reactions is the ability of the phenolic hydroxyl groups of lignin to participate in the formation of reactive intermediates, eg, phenoxy radical (4), quinonemethide (5), and phenoxy anion (6) ... [Pg.142]

Examples include luminescence from anthracene crystals subjected to alternating electric current (159), luminescence from electron recombination with the carbazole free radical produced by photolysis of potassium carba2ole in a fro2en glass matrix (160), reactions of free radicals with solvated electrons (155), and reduction of mtheiiium(III)tris(bipyridyl) with the hydrated electron (161). Other examples include the oxidation of aromatic radical anions with such oxidants as chlorine or ben2oyl peroxide (162,163), and the reduction of 9,10-dichloro-9,10-diphenyl-9,10-dihydroanthracene with the 9,10-diphenylanthracene radical anion (162,164). Many other examples of electron-transfer chemiluminescence have been reported (156,165). [Pg.270]

Analytical and Test Methods. o-Nitrotoluene can be analyzed for purity and isomer content by infrared spectroscopy with an accuracy of about 1%. -Nitrotoluene content can be estimated by the decomposition of the isomeric toluene diazonium chlorides because the ortho and meta isomers decompose more readily than the para isomer. A colorimetric method for determining the content of the various isomers is based on the color which forms when the mononitrotoluenes are dissolved in sulfuric acid (45). From the absorption of the sulfuric acid solution at 436 and 305 nm, the ortho and para isomer content can be deterrnined, and the meta isomer can be obtained by difference. However, this and other colorimetric methods are subject to possible interferences from other aromatic nitro compounds. A titrimetric method, based on the reduction of the nitro group with titanium(III) sulfate or chloride, can be used to determine mononitrotoluenes (32). Chromatographic methods, eg, gas chromatography or high pressure Hquid chromatography, are well suited for the deterrnination of mononitrotoluenes as well as its individual isomers. Freezing points are used commonly as indicators of purity of the various isomers. [Pg.70]

Oxo aldehyde products range from C to C, ie, detergent range, and are employed principally as intermediates to alcohols, acids, polyols, and esters formed by the appropriate reduction, oxidation, or condensation chemistry. The 0x0 reaction has been the subject of various reviews (4). [Pg.465]

H2 or O2 from water in the presence of a sacrificial reductant or oxidant employ a mthenium complex, typically [Ru(bipy)2], as the photon absorber (96,97). A series of mixed binuclear mthenium complexes having a variety of bridging ligands have been the subject of numerous studies into the nature of bimolecular electron-transfer reactions and have been extensively reviewed (99—102). The first example of this system, reported in 1969 (103), is the Creutz-Taube complex [35599-57-6] [Ru2(pyz)(NH3. [Pg.178]


See other pages where Subject reductive is mentioned: [Pg.1365]    [Pg.210]    [Pg.121]    [Pg.159]    [Pg.159]    [Pg.1365]    [Pg.210]    [Pg.121]    [Pg.159]    [Pg.159]    [Pg.1066]    [Pg.281]    [Pg.713]    [Pg.5]    [Pg.352]    [Pg.51]    [Pg.889]    [Pg.187]    [Pg.105]    [Pg.199]    [Pg.24]    [Pg.35]    [Pg.352]    [Pg.448]    [Pg.411]    [Pg.27]    [Pg.190]    [Pg.279]    [Pg.89]    [Pg.218]    [Pg.305]    [Pg.429]    [Pg.473]    [Pg.475]    [Pg.68]    [Pg.203]    [Pg.66]    [Pg.148]   
See also in sourсe #XX -- [ Pg.2 , Pg.5 , Pg.14 ]




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Carbonyl reduction 486 Subject

Conjugate reduction 420 Subject

Cumulative Subject Birch reduction

Cumulative Subject Clemmensen reduction

Cumulative Subject reduction

Cumulative Subject reductive cleavage

Oxygen reduction reaction Subject

Polarographic reduction Subject

Reduction of directly observed cycle numbers in subjects

Reduction process Subject

Reductive cyclization Subject

Reductive dehalogenation Subject

Reductive elimination 850 Subject

Reductive evolution Subject

Reductive phenylation Subject

Staudinger reduction Subject

Subject 1-methyl-, reduction

Subject Birch reduction

Subject Clemmensen reduction

Subject enzymic reduction

Subject index reduction

Subject oxidation/reduction

Subject reduction

Subject reduction, dissolving metals

Subject reductive alkylation

Subject reductive amination

Subject reductive carbonylation

Subject reductive cleavage

Subject standard reduction potentials

Viscosity reduction Subject

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