The vitamin directory; a complete, authoritative description and trade listing of all vitamin materials, assay methods and instruments, experimental animals, reference materials and reagents.

Cover-title.

農業関係重要品輸出入累年対照表 Trade returns of merchandise relating to agriculture in Japan 1916

Mode of access: Internet.

昭和元年満洲貿易詳細統計 大連港 牛莊港 安東港 哈爾濱管區, Detailed trade return of Manchuria, i.e. Dairen, Newchwang, Antung and Harbin district

Mode of access: Internet.

Foreign slave trade : abstract of the information recently laid on the table of the House of Commons on the subject of the slave trade : being a report made by a committee specially appointed for the purpose, to the directors of the African Institution on the 8th of May, 1821 /

Mode of access: Internet.

The injustice and impolicy of the slave trade, and of the slavery of the Africans: illustrated in a sermon preached before the Connecticut Society for the Promotion of Freedom, and for the Relief of Persons Unlawfully Holden in Bondage, at their annual meeting in New Haven, September 15, 1791.

Mode of access: Internet.

An history of Jamaica : with observations on the climate, scenery, trade, productions, negroes, slave trade, diseases of Europeans, customs, manners, snd dispositions of the inhabitants : to which is added, an illustration of the advantages which are likely to result from the abolition of the slave trade /

"An act ... for consolidating, and bringing into one act, the several laws relating to slaves, and for giving them further protection and security": p. 245-278.

The injustice and impolicy of the slave trade : and of the slavery of the Africans:

Mode of access: Internet.

Oversight of the Trade Act of 1988 : hearing before the Committee on Finance, United States Senate, One Hundred First Congress, first session.

Item 1038-A, 1038-B (MF).

1977 selected characteristics of retail trade : measures of value produced, capital expenditures, depreciable assets, and operating expenses.

Mode of access: Internet.

Parallel photographs of the spectra of the sun, of iron, and of iridium, from the line (H) to near the line (D), in six sections. Also separate photographs of the spectrum of titanic iron ore, in six sections.

Half-title. Reprinted from the Monthly notices of the Royal astronomical society, vol.XLIX, no.7.

The absorption spectra of solutions of certain salts of cobalt, nickel, copper, iron, chromium, neodymium, praseodymium, and erbium in water, methyl alcohol, ethyl alcohol, and acetone, and in mixtures of water with the other solvents.

"A continuation of the work of Jones and Uhler on the absorption spectra of solutions (Carnegie publication no. 60)" cf. Pref.

The foreign trade policy of the United States

DU1 .I5 1936 vol. 13, no. 5 with : Business and government under the National Recovery Administration / Theodore J. Kreps. New York : American Council, Institute of Pacific Relations, 1936. Bound together subsequent to publication.

The rearrangements of naphthyinitrenes: UV/Vis and IR spectra of azirines, cyclic ketenimines, and cyclic nitrile ylides

Ar matrix photolysis of 1- and 2-naphthyl azides 3 and 4 at 313 nm initially affords the singlet naphthyl nitrenes, (1)1 and (1)2. Relaxation to the corresponding lower energy, persistent triplet nitrenes (3)1 and (3)2 competes with cyclization to the azirines 15 and 18, which can also be formed photochemically from the triplet nitrenes. On prolonged irradiation, the azirines can be converted to the seven-membered cyclic ketenimines 10 and 13, respectively, as described earlier by Dunkin and Thomson. However, instead of the o-quinoid ketenimines 16 and 19, which are the expected primary ring-opening products of azirines 15 and 18, respectively, we observed their novel bond-shift isomers 17 and 20, which may be formally regarded as cyclic nitrile ylides. The existence of such ylidic heterocumulenes has been predicted previously, but this work provides the first experimental observation of such species. The factors which are responsible for the special stability of the ylidic species 17 and 20 are discussed.

First-principle density-functional calculation of the Raman spectra of BEDT-TTF

We present a first-principles density-functional calculation for the Raman spectra of a neutral BEDT-TTF molecule. Our results are in excellent agreement with experimental results. We show that a planar Structure is not a stable state of a neutral BEDT-TTF molecule. We consider three possible conformations and discuss their relation to disorder in these systems.

Quantitative fluorescence excitation spectra of synthetic eumelanin

Previously reported excitation spectra for eumelanin are sparse and inconsistent. Moreover, these studies have failed to account for probe beam attenuation and emission reabsorption within the samples, making them qualitative at best. We report for the first time quantitative excitation spectra for synthetic eumelanin, acquired for a range of solution concentrations and emission wavelengths. Our data indicate that probe beam attenuation and emission reabsorption significantly affect the spectra even in low-concentration eumelanin solutions and that previously published data do not reflect the true excitation profile. We apply a correction procedure (previously applied to emission spectra) to account for these effects. Application of this procedure reconstructs the expected relationship of signal intensity with concentration, and the normalized spectra show a similarity in form to the absorption profiles. These spectra reveal valuable information regarding the photophysics and photochemistry of eumelanin. Most notably, an excitation peak at 365 urn (3.40 eV), whose position is independent of emission wavelength, is possibly attributable to a 5,6-dihydroxyindole-2-carboxylic acid (DHICA) component singly linked to a polymeric structure.