Isoleucine epimerization in Quarternary planktic foraminifera of sediment core GIK12519-2, Sierra Leone Rise

Panktonic foraminiferal tests of the spinose species Orbulina universa, of the non-spinose Globorotalia tumida-menardii complex, and of a mixed species assemblage (grain size fraction 200-400 µm) were isolated from Sierra Leone Rise core GIK13519-2 and analyzed for free, total, and bound (by difference) amino acids to study the isoleucine epimerization mechanism in fossil foraminiferal tests and to define empirical calibration curves for dating deep-sea sediments over the past 900,000 years. Total isoleucine epimerization curves typically separate into three "linear" segments of decreasing apparents rates with increasing time and exhibit a pronounced "species effect". The degree of epimerization attained at time is considerably lower in O. universa than in G. tumida-menardii while the mixed species results scatter between the limits delineated by the two monospecific curves. Total allo/iso ratios are closely related to the proportion of free to total isoleucine accumulating in the tests indicating that the rate of hydrolysis of matrix proteins and peptides controls the overall epimerization reaction. The results are consistent with experimental evidenve where upon isoleucine epimerizes at a rapid rate in terminal positions but at slow rates in interior positions as well as in the free state. Notwithstanding free isoleucine exhibits the highest degree of epimerized terminal isoleucine. Species-specific hydrolysis and epimerization rates are maintained until about 50 % of bound isoleucine have been hydrolyzed to the free state corresponding to a total allo/iso ratio of about 0.5. Remaining peptide units appear to be more resistent against hydrolysis and separate species then show the same apparent epimerization rate dominantly controlled by the slow conversion rate in the free state until equilibrium is achieved in Miocene samples under deep-ocean temperature conditions. The degree of epimerization attained at comparable time in separate species will, however, remain different due to different initial rates of hydrolysis.

Oligocene to Miocene stable isotope record and planktonic foraminifer biostratigraphy of the Sierra Leone Rise

We have integrated Oligocene to lower upper Miocene planktonic foraminifer biostratigraphy with benthic foraminifer (Cibicidoides spp.) stable isotope records for two sites drilled on opposite sides of the Sierra Leone Rise in the eastern equatorial Atlantic Ocean. Deep Sea Drilling Project Site 366 (2853 m present water depth; 2200-2800 m paleodepth) recovered an Oligocene to upper Miocene record with a minor unconformity in the "middle" Oligocene and a condensed middle Miocene section. Ocean Drilling Program Site 667 (3529 m present depth; 3000-3500 m paleodepth) recovered an apparently continuous "middle" Oligocene to lower middle Miocene record and a similar condensed middle Miocene section. The Oligocene to lower Miocene sections were deposited at similar sedimentation rates (~11-16 m/m.y.). Stable isotope stratigraphy proved to be useful in establishing intra- and interbasinal correlations. In addition to the well-known earliest Oligocene and middle Miocene S180 increases, a distinct d18O increase occurred near the Oligocene/Miocene boundary. Carbon isotope variations provide similar potential for improving correlations; for example, a d13C increase occurred near the Oligocene/Miocene boundary in concert with increased d18O values. There was little d13C difference between the western Atlantic and eastern Atlantic basins during the late Oligocene and most of the middle Miocene; in contrast, eastern basin d13C values were slightly lower than those in the western basins during the earliest Oligocene (about 35-33 Ma) and early Miocene (about 22-18 Ma).

Dei suoni musicali : lettura fatta nelle sala del Circolo Cittadoni in Modena il 21 marzo 1868 /

University of Illinois bookplate: "From the library of Conte Antonio Cavagna Sangiuliani di Gualdana Lazelada di Bereguardo, purchased 1921".

The economic status of the Jews in Alsace, Metz and Lorraine (1648-1789)

Bibliographical footnotes.

Pontificale romanum : summorum pontificum jussu editum a Benedicto XIV. et Leone XIII. Pont. Max. recognitum et castigatum.

"Communi Pontificalis Romani"--pamphlet fastened to inside back cover.

Lincoln episcopal records in the time of Thomas Cooper ... bishop of Lincoln, A.D. 1571 to A.D. 1584,

Published also, 1912, as v. 2 of the Publications of the Lincoln record society.

Leone Leoni /

For voice and piano.

Recueil de pièces sur la negociation entre la Nouvelle France et la Nouvelle Angleterre : ès années 1648 et suivantes.

Narré du père Druillettes.--Lettre du père Druillettes à Jean Winthrop.--Lettre du père Druillettes.--Extraits du Journal des Supérieurs des Missions.--Lettre écritte par le Conseil de la Nouvelle France aux Commissionnaires de la Nouvelle Angleterre.--Extrait des Registres de l'Ancien Conseil de la Nouvelle France, et Lettre de M. d'Ailleboust.--Note sur le Narré.

A ballad in macaronic Latin, entitled "Rustica Descriptio visitationis fanaticae", being a country clergyman's tragi-comical lament upon revisiting Oxford after the root-and-branch-reform of 1648, 1649 : with preface and notes, the verses being done into Doggrel in usum Parliamenti indoctorum, eiusdem nominis secundi /

Mode of access: Internet.

Étude sur Mazarin et ses démêlés avec le pape Innocent X (1644-1648) /

Includes bibliographical references (p. ii-vii) and index.

The siege of Colchester; or, An event of the civil war, A.D. 1648.

Mode of access: Internet.

Mémoires et correspondance de Duplessis-Mornay, pour servir à l'histoire de la réformation et des guerres civiles et religieuses en France, sous les règnes de Charles IX, de Henri III, de Henri IV et de Louis XIII, depuis l'an 1571 jusqu'en 1623.

Planned to comprise 15 v. No more published.

A handbook for travellers in Northern Italy : being a guide to the states of Sardinia, Lombardy and Venice, Parma and Piacenza, Modena, Lucca, and Tuscany as far as the Val D'Arno.

Includes index.

Leonis Allatii De ecclesiae occidentalis atque orientalis perpetua consensione libri tres ; ejusdem dissertationes, De dominicis et hebdomadibus graecorum et De missa praesanctificatorum /

Mode of access: Internet.