Sediment toxicity assessment of Guanabara Bay, Rio de Janeiro, Brazil.

Guanabara Bay (GB) comprises of estuarine and marine environments of high ecological and socio-economic relevance, together with port, industrial and urban areas. The anthropogenic activities produce environmental impacts, including the aquatic pollution. The sediment quality assessment is important to evaluate the effects of contamination, once sediments are a repository for most of the contaminants. In this Study, the quality of sediments from GB was evaluated, in rainy and dry periods, throughout the employment of acute toxicity tests with the amphipod Tiburonella viscana, and chronic bioassays with embryos of the sea-urchin Lytechinus variegatus. In the dry period, acute toxicity was found in the sediments from stations 1, 2 3 (NW) and 7 (near Guapimirim Environmental Protection Area). The bioassays with liquid phases showed effects, but were strongly influenced by the unionized ammonia levels, which were high in this period. In the rainy period, acute toxicity was found in sediments samples from stations 1, 2, 3, 6, 8, 10, 11, 12 and 15. Chronic toxicity could be clearly detected, as ammonia concentrations tended to be low in the most part of the samples. The results showed that the sediment toxicity is influenced by precipitation rates, which increase the input of contaminants to the Bay, and also allowed subdividing GB in three main zones: northwest (stations 1, 2, 3, 5), northeast (stations 6, 7, 8, 9) and centre-south (stations 10, 11, 12, 13, 14, 15). Results also showed that the quality of GB sediments is poor, and that toxicity tests could determine the combined effects of pollutants.

Methods and results of a search for gravitational waves associated with gamma-ray bursts using the GEO 600, LIGO, and Virgo detectors

In this paper we report on a search for short-duration gravitational wave bursts in the frequency range 64 Hz-1792 Hz associated with gamma-ray bursts (GRBs), using data from GEO 600 and one of the LIGO or Virgo detectors. We introduce the method of a linear search grid to analyze GRB events with large sky localization uncertainties, for example the localizations provided by the Fermi Gamma-ray Burst Monitor (GBM). Coherent searches for gravitational waves (GWs) can be computationally intensive when the GRB sky position is not well localized, due to the corrections required for the difference in arrival time between detectors. Using a linear search grid we are able to reduce the computational cost of the analysis by a factor of O(10) for GBM events. Furthermore, we demonstrate that our analysis pipeline can improve upon the sky localization of GRBs detected by the GBM, if a high-frequency GW signal is observed in coincidence. We use the method of the linear grid in a search for GWs associated with 129 GRBs observed satellite-based gamma-ray experiments between 2006 and 2011. The GRBs in our sample had not been previously analyzed for GW counterparts. A fraction of our GRB events are analyzed using data from GEO 600 while the detector was using squeezed-light states to improve its sensitivity; this is the first search for GWs using data from a squeezed-light interferometric observatory. We find no evidence for GW signals, either with any individual GRB in this sample or with the population as a whole. For each GRB we place lower bounds on the distance to the progenitor, under an assumption of a fixed GW emission energy of 10(-2)M circle dot c(2), with a median exclusion distance of 0.8 Mpc for emission at 500 Hz and 0.3 Mpc at 1 kHz. The reduced computational cost associated with a linear search grid will enable rapid searches for GWs associated with Fermi GBM events once the advanced LIGO and Virgo detectors begin operation.

D-S(+) meson production at central rapidity in proton-proton collisions at root s=7 TeV

The P-T-differential inclusive production cross section of the prompt charm-strange meson D-s(+) in the rapidity range vertical bar y vertical bar < 0.5 was measured in proton-proton collisions at root s = 7 TeV at the LHC using the ALICE detector. The analysis was performed on a data sample of 2.98 x 10(8) events collected with a minimum-bias trigger. The corresponding integrated luminosity is L-int = 4.8 nb(-1). Reconstructing the decay D-s(+) -> phi pi(+) with phi -> K-K+, and its charge conjugate, about 480 D-s(+/-) mesons were counted, after selection cuts, in the transverse momentum range 2 < P-T < 12 GeV/c. The results are compared with predictions from models based on perturbative QCD. The ratios of the cross sections of four D meson species (namely D-0, D+, D*+ and D-s(+)) were determined both as a function of p(T) and integrated over p(T)after extrapolating to full p(T) range, together with the strangeness suppression factor in charm fragmentation. The obtained values are found to be compatible within uncertainties with those measured by other experiments in e(+)e(-), ep and pp interactions at various centre-of-mass energies. (C) 2012 CERN. Published by Elsevier By. All rights reserved.

Advanced N.D.T.: analisi e studio di componenti in materiale composito

Numerose evidenze dimostrano che le proprietà dei materiali compositi sono strettamente legate ai processi produttivi, alle tipologie di fibra e resina impiegate nel materiale stesso. Proprietà caratterizzate anche dai difetti contenuti nel materiale stesso. Nella tesi si presta particolare attenzione al processo produttivo con prepreg e autoclave trattando anche il tema della stesura di un ply-book. Si valutano in modo teorico e critico alcuni tra i metodi N.D.T. più avanzati tra cui: P.T.(Penetrant Test), Rx(Radiography Test), UT (Ultrasound Test in Phased Array) e IRT (InfraRed Termography - Pulsata). Molteplici sono i componenti testati che variano tra loro per: tipologia di resina e fibra impiegata, processo produttivo e geometria. Tutti questi componenti permettono di capire come i singoli parametri influenzino la visualizzazione e l'applicabilità delle tecniche N.D.T. sopra citate. Su alcuni provini è stata eseguita la prova meccanica Drop Weight Test secondo ASTM D7136 per correlare le aree di delaminazione indotte e la sensibilità di ogni singolo metodo, visualizzando così la criticità indotta dagli urti con bassa energia di impatto (BVID Barely Invisible Impact)di cui i materiali compositi soffrono durante la "service life". A conclusione del lavoro si potrà comprendere come solo l'analisi con più metodi in parallelo permetta di ottenere una adeguata Probability Of Detection.

Das deutsche Haus und das Haus Israel : ohne Entjudung keine Rettung ; eine Auseinandersetzung nach d. Zusammenbruch f. unsern Wiederaufbau

von einem Proletarier [d.i. Fritz Kemper]

Anti-Israel : eine Vorlesung in d. geheimen Akademie zum grünen Esel als Entrittsrede

geh. von Horatius Cocles [d.i. Karl Christian Ernst Graf von Benzel-Sternau]

... Lettre d'un Israélite français à ses coreligionnaires

[Tsarphati, d.i. Olry Terquem]

Antisemitismus und Strafrechtspflege : zur Auslegung u. Anwendung d. §§ 130, 166, 185, 193, 360 (11) Straf-Gesetz-Buchs in höchstrichterlicher u. erstinstanzlicher Praxis

von Maximilian Parmod [d.i. Max Apt]

Religiöse Scheidewände : ein Wink in d. Judenbewegung

von Leo Rauchmann [d.i. Jakob Stern]

Die Juden-Frage : "Denkschrift" über die "Ursachen" eines erfolgten Uebertritts zur "christlichen" Kirche u. die sich - aus denselben, wie auf Grundlage vorherrschend spezifisch "christlicher" Weltanschauung, - ergebende "Veranlassung" f. d. "gebildeten" deutschen [insb. "ungläubigen"] Juden zur Ueberantwortung d. künftigen Generation an die "christliche" Kirche

von e. Offizier a. D. [d.i. von Henle]

Hinaus! : Ein Culturbild aus d. Centrum d. modernen deutschen Antisemitismus

skizziert von O. Lenhard [d.i. Leonhard Freund]

Ahlwardt im Kampf mit dem Gesetz : Vortr., geh. in e. Versamml. d. "Vereinigung zur Bekämpfung d. Racenhetze" am 5. Aug. 1892

von Ed. Mund [d.i. Edmund Lichtenstein]

Nowa Judea czyli praktyczne załatwienie kwestyi żydowskiej i otwarty list do P. t. patryotȯw Irlandyi

napisał C. Omega [d. i. Celestin Zyblikiewicz]

Die Mischpoke im Berliner Buchhandel : offener Brief an d. Journalisten Isidor Feilchenfeld

von Sally Simon Tille [d.i. Paul Heichen]

Die Israeliten als "Träger der Kultur" : Streiflichter auf unsern modernen Bücherhandel u. Skizzen etwelcher Jünger desselben ; offener Brief an d. Journalisten Isidor Feilchenfeld

von Sally Simon Tilles [d.i. Paul Heichen]