Histochemical and morphological features of biopsied and stripped oocytes from the Brazilian endangered teleost pirapitinga, Brycon nattereri (Characiformes)

The aim of the present study was to characterize biopsied and stripped oocytes from the Brazilian endangered teleost pirapitinga (Brycon nattereri) using histochemical and morphological analyses. Biopsied oocytes had a mean diameter of 2.225 mm (modal diameter: 2.312 mm), complete vitellogenesis and a central or slightly eccentric nucleus. Neutral polysaccharides were detected in the follicular cells, zona radiata and yolk globules, while acidic polysaccharides were detected in the follicular cells and cortical alveoli. Ten out of the 19 females treated with two doses of carp pituitary extract (cPE) released oocytes, which were also analysed. Stripping occurred 292 +/- 39 degree-hours after the second dose of cPE and led to a mean spawning weight of 36.2 g, 10% spawning index, 241 oocytes/g of ova, 8222 oocytes/female and 23 oocytes/g of body weight. Stripped oocytes had a mean diameter of 2.33 mm and a mode at 2.375 mm, were weakly adhesive and coloration ranged from wine to brown. Under scanning electron microscopy, stripped oocytes exhibited a single funnel-shaped micropyle located at the animal pole and a zona radiata that measured 7.7 m in thickness with eight pore canals/m(2). Oocyte morphology in Brycon nattereri is similar to that found in other species of the genus, except for the larger size and weaker adhesiveness. These findings provide essential information for a better understanding of the reproductive biology of B. nattereri and the establishment of conservation measures for this threatened species.

[Iatrogenic preterm births and late preterm births of 340/7 to 366/7 - risks and chances]

Late preterm births with a gestational age of 340/7-366/7 are physiologically, anatomically and metabolically immature and develop medical complications significantly more frequently, have a high morbidity and an elevated mortality. Consideration of this knowledge will in future require new strategies for obstretric, peripartal and neonatal management options that take into account not only maternal risks and demands but also those of the infant.

Micrometer-sized ice particles for planetary-science experiments – II. Bidirectional reflectance

We have measured the bidirectional reflectance of spherical micrometer-sized water-ice particles in the visible spectral range over a wide range of incidence and emission angles. The small ice spheres were produced by spraying fine water droplets directly into liquid nitrogen. The resulting mean particle radii are 1.47 + 0.96 - 0.58 μm. Such a material shares many properties with ice in comets and at the surface of icy satellites. Measurements show that the fresh sample material is highly backscattering, contrasting with natural terrestrial snow and frost. The formation of agglomerates of particles during the sample production results in a noticeable variability of the photometric properties of the samples in their initial state. We have also observed significant temporal evolutions of the scattering behavior of the samples, shifting towards more forward scattering within some tens of hours, resulting most likely from sintering processes. All reflectance data are fitted by the Hapke photometric model (1993 and 2002 formulation) with a one/two/three-parameter Henyey-Greenstein phase function and the resulting Hapke parameters are provided. These parameters can be used to compare laboratory results with the observed photometric behaviors of astronomical objects. We show, in particular, that the optical properties of the fresh micrometer-sized ice samples can be used to reproduce the predominant backscattering in the phase curves of Enceladus and Europa.

Limits on Spin-Dependent WIMP-Nucleon Cross Sections from 225 Live Days of XENON100 Data

We present new experimental constraints on the elastic, spin-dependent WIMP-nucleon cross section using recent data from the XENON100 experiment, operated in the Laboratori Nazionali del Gran Sasso in Italy. An analysis of 224.6 live days x 34 kg of exposure acquired during 2011 and 2012 revealed no excess signal due to axial-vector WIMP interactions with Xe-129 and Xe-131 nuclei. This leads to the most stringent upper limits on WIMP-neutron cross sections for WIMP masses above 6 GeV/c(2), with a minimum cross section of 3.5 x 10(-40) cm(2) at a WIMP mass of 45 GeV/c(2), at 90% confidence level.

225 Jahre Naturforschende Gesellschaft in Bern

Ein Überdauern von 225 Jahren ist eine lange Zeit, in der viel Wasser die Aare hinuntergeflossen ist – «Wasser bewegt», so das Motto unseres Jubiläumsjahres. In dieser Zeit war und ist die NGB einem kontinuierlichen Wandel der wissenschaftlichen Tätigkeiten, aber auch des gesellschaftlichen Umfelds unterworfen. Der folgende Artikel soll einen kurzen Überblick über die Entstehungsgeschichte und die Entwicklung der NGB in diesen 225 Jahren liefern. Als wichtigste Grundlagen dienten beim Recherchieren die bereits bestehenden Zusammenfassungen zum 100-, 150- und 200-jährigen Bestehen der NGB (siehe Referenzliste). Auch die in den «Mitteilungen» publizierten Jahresberichte der Präsidenten stellten wichtige Zeitzeugnisse dar, welche exemplarisch konsultiert und da und dort mit eingearbeitet wurden. Daneben finden sich in unserem Archiv Hunderte von Sitzungsprotokollen, welche ein Durchforsten und historisches Aufbereiten verdient hätten, was aber aus Zeitgründen vom Autor nicht zu bewerkstelligen war. Es liegt also ein spannendes historisches Forschungsgebiet brach, welches einer zukünftigen Bearbeitung harrt. Nebst dem Abhandeln des geschichtlichen Ablaufes war der Autor auch bestrebt, den historisch bedingten Ursprung verschiedenster Aktivitäten der NGB zu beleuchten und den Aktualitätsbezug herzustellen.

Ms. hebr. oct. 225 - Keter Torah

Vorbesitzer: Jōsēf ben Aharōn Alkohen

Der Glasschrank : (Fortsetzung von Seite 225/226)

Marie Riesenfeld

Rabbi Salomon Mirls Neumark : Zum 225. Todestage

A. Dukesz

Na 50 Nachlass Arthur Schopenhauer - 'Schopenhauer-Archiv', 366 - Ausleihe eines Buches an N.N.

2 Seiten

Na 50 Nachlass Arthur Schopenhauer - 'Schopenhauer-Archiv', 225 - Mitteilung über den Stand der schwierigen Finanzsituation

u.a.: Auflistung einer Rechnung des Kurators der Titzschen Konkursmasse Daniel Friedrichsen; Johanna Schopenhauer; Daniel Friedrichsen; Mendelssohn & Fraenckel; H. F. Fälschow; C. Heine;

Na 1 Nachlass Max Horkheimer, 502 - Korrespondenzen mit Theodor W. Adorno (p. VI 1, 269 - 366; VI 1 A, 1 - 55)

Briefwechsel zwischen Max Horkheimer und Theodor W. Adorno, 1927 - 1938; 1 Brief von Theodor W. Adorno an Hans F. Redlich, 1938; 1 Brief von Max Horkheimer an United States of America General Consul in Stuttgart, 1938; 1 Brief von Rudolph Kolisch an Theodor W. Adorno, 1938; 1 Brief von Paul F. Lazarsfeld an Theodor W. Adorno, 1938; 2 Briefe von Theodor W. Adorno an Paul F. Lazarsfeld, 1938; 1 Brief von Hanna Maaß an Gretel Adorno, 1937; Briefwechsel und Beilagen zwischen Max Horkheimer, Theodor W. Adorno und Gretel Adorno, 1939 - 1940; 1 Brief (Entwurf) von Theodor W. Adorno an Robert M. Hutchins, 1940; 4 Briefe von Friedrich Pollock an Theodor W. Adorno, 1940; 2 Briefe von Margot von Mendelssohn an Theodor W. Adorno, 1940; 2 Briefe von Theodor W. Adorno an Margot von Mendelssohn, 1940; 1 Brief von Franz L. Neumann an Theodor W. Adorno, 1940; 1 Brief (Entwurf von T.W. Adorno) von Max Horkheimer an Mrs. Charles E. Mitchell, 1940; 1 Brief und Beilage von Gretel Adorno an Frederick Wild, 1939; 1 Brief von French und Co. Eifert an Gretel Adorno, 1939; 2 Briefe von Theodor W. Adorno an Herbert W. Schneider, 1939; 1 Brief von Theodor W. Adorno an Jean Wahl, 1939; 1 Brief von Max Horkheimer an Roger M. Howson von der Columbia University Library in New York, 1939;

Na 1 Nachlass Max Horkheimer, 518 - Korrespondenzen mit Walter Benjamin (Kopien) (p. VI 5, 152 - 366)

75 Briefe (Kopien) zwischen Max Horkheimer und Walter Benjamin;

Ms.Ff.F.Stoltze 3. 225 - Brief von Georg Pingler an Friedrich Stoltze

Zur Königsteiner Angelegenheit Stoltzes