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Sensitization and desensitization to allyl isothiocyanate (mustard oil) in the nasal cavity.

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The aim of this study was to investigate the response, acute effects and time-course of sensitization and desensitization to allyl isothiocyanate (mustard oil) nasal stimuli in healthy subjects. Sixty subjects participated in the experiment, which employed psychophysical (intensity ratings) and

Self-Assembled Highly Positively Charged Allyl-Pd Crowns: Cavity-Pocket Driven Interactions of Fluoroanions.

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A series of dodecanuclear highly positively charged homo- and heterometallamacrocycles [{Pd(η 3 -2-Me-C 3 H 4 )} 6 (4-PPh 2 py) 12 {M 2 (tpbz)} 3 ] 18+ (M = Pd, Pt; tpbz = 1,2,4,5-tetrakis(diphenylphosphanylbenzene) were synthesized by the quantitative self-assembly of {Pd(η 3 -2-Me-C 3 H 4 )} + ,

Effects of ionized cyclodextrin on decomposition of allyl isothiocyanate in alkaline solutions.

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The secondary hydroxyl ion (alkoxide) ion for cyclodextrin (CD) may affect the decomposition of allyl isothiocyanate (AITC) in alkaline solutions. The equilibrium and kinetic parameters involved in the reaction processes were measured. It was found that the interaction between the alkoxide ion for

Kinetic and thermodynamic analysis of the cyclodextrin-allyl isothiocyanate inclusion complex in an aqueous solution.

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The decomposition of allyl isothiocyanate (AITC) in an aqueous solution was depressed in the presence of cyclodextrin (CD), it's suppression effect increasing in the order of none < beta-CD < alpha-CD. The results of kinetic and thermodynamic analysis of the CD-AITC inclusion complexes showed that

Carcinogenesis in rats by asymmetric nitrosamines containing an allyl group.

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Four asymmetric nitrosamines containing 1 allyl group were administered to rats in drinking water to aid in understanding the failure of nitrosodiallylamine ( NDAA ) to induce tumors in rats. Three of the compounds were given at equimolar doses, the fourth at somewhat lower dose. All four

Determination of absolute configuration of (pi-allyl) palladium complexes by NMR spectroscopy and stereoselective complexation.

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The chiral chelating ligand N,N'-bis(phenylethyl)bispidine (1) forms a rigid cavity which accommodates (pi-allyl)palladium species with high selectivity. In the resulting complex, the absolute configuration of the pi-allyl ligand can be determined by the detection in NMR spectra of a few unambiguous

Trigeminal sensitization and desensitization in the nasal cavity: a study of cross interactions.

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Chemical irritation in the human nasal cavity is poorly documented. In this field, an important issue concerns the differential responses produced by successive stimulation. Repeated identical chemical irritant stimuli can produce increases or decreases in responses (two phenomena known as

Room-Temperature Cavity Ring-Down Spectroscopy of Methylallyl Peroxy Radicals.

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We report room-temperature cavity ring-down (CRD) spectra of the Ã ← X̃ electronic transition of 1-, 2-, and 3-methylallyl peroxy (MAOO^•) radicals produced by 193 nm photolysis of methyl-substituted allyl chlorides in the presence of O₂. Vibronic structure of experimentally

Locking the 150-cavity open: in silico design and verification of influenza neuraminidase inhibitors.

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Neuraminidase (NA) of influenza is a key target for virus infection control and the recently discovered open 150-cavity in group-1 NA provides new opportunity for novel inhibitors design. In this study, we used a combination of theoretical methods including fragment docking, molecular linking and

Nasal and pulmonary toxicity of allyl glycidyl ether in mice.

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A concentration-dependent expiratory bradypnea, indicative of irritation of the nasal mucosa, occurred during a 15-min oronasal exposure of mice to allyl glycidyl ether (AGE) in the concentration range of 1.9-8.6 ppm. The level of exposure responsible for a 50% decrease in the respiratory rate

Acute inhalation study of allyl alcohol for derivation of acute exposure guideline levels.

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An acute, whole-body inhalation study for allyl alcohol in Sprague-Dawley rats was designed to support derivation of AEGL values, with emphasis on establishing NOAELs for irreversible effects of different exposure concentrations and durations. Groups of 10 rats were exposed for 1 hour (0, 50, 200,

Kinetics and mechanisms of the allyl + allyl and allyl + propargyl recombination reactions.

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The kinetics and mechanisms of the self-reaction of allyl radicals and the cross-reaction between allyl and propargyl radicals were studied both experimentally and theoretically. The experiments were carried out over the temperature range 295-800 K and the pressure range 20-200 Torr (maintained by

Photoactivation of olfactory sensory neurons does not affect action potential conduction in individual trigeminal sensory axons innervating the rodent nasal cavity.

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Olfactory and trigeminal chemosensory systems reside in parallel within the mammalian nose. Psychophysical studies in people indicate that these two systems interact at a perceptual level. Trigeminal sensations of pungency mask odour perception, while olfactory stimuli can influence trigeminal

Naphthotubes: Macrocyclic Hosts with a Biomimetic Cavity Feature.

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Macrocyclic hosts are the principal tools used in supramolecular chemistry because they can recognize other small molecules through non-covalent interactions. However, in terms of recognition ability, known macrocyclic hosts are often not comparable to bioreceptors. This may be due to the lack of

Synthesis of helical π-conjugated polymers bearing pyridine N-oxide pendants and asymmetric allylation of aldehydes in the helical cavity.

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Catalytically active chiral π-conjugated polymers (poly-1(NO)r) bearing pyridine N-oxide pendants were synthesized by ternary copolymerization of a d-glucose-bound diethynyl compound with two types of thieno[3,4-b]thiophene comonomer, one of which contained a pyridine N-oxide group. When the

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