Search results for " black"
showing 10 items of 317 documents
Sources, determination, monitoring, and transport of carbonaceous aerosols in Mainz, Germany
1998
Abstract Total atmospheric particulate matter, total carbon (TC), and black carbon (BC) were measured over two periods, spring and summer 1994, at a sampling location in Mainz, Germany. An optical (aethalometer) and a thermal method were used to determine BC since previous studies have shown that the optical method is dependent on the source of aerosols. The thermal method chosen for calibration enables the determination of molar hydrogen to carbon ratios for total particulate carbon and BC if quartz fiber filters were pre-treated at 850°C for 4 h. A specific attenuation cross-section of ≈7 m 2 g -1 for BC on the aethalometer filter was calculated which lies between values determined for c…
Contribution of total suspended particulate (TSP) to the formation of black crusts on building materials in urban enviroments of Sicily (Italy)
2011
More about the developing of invisible lipstick-contaminated lipmarks on human skin: The usefulness of fluorescent dyes
2006
At the present time fingerprints are one of the simplest, and most reliable means of identification. Increasingly, crime scene investigators look for palm, foot, ear or lip prints. With regard to lip prints, the use, very common today, of protective or permanent lipsticks allow the production an invisible lipmark (or invisible lipstick-contaminated lipmark) which is possible to develop. Some results have already been published about developers useful for different kinds of surfaces (both porous and non-porous) as well as those which are more efficient in case of old or recent prints. The latest studies are about the developing on human skin, and they prove the usefulness of lysochromes (spe…
Beyond Lampedusa: Africa Meets Europe / Para Lá de Lampedusa: A África Encontra a Europa
2013
The volume, resulting from a photograph exhibit that travelled the globe (Portugal, China, USA, Nigeria, Italy, etc.), offers a miscellaneous portrayal of the history of African photography and its influence on non-African imaginings of Africa and the African diaspora in all its diversity. My essay comments on the photographic representation of the black body in Italy in both colonial and postcolonial times.
Genetic parameters for early lamb survival and growth in Scottish Blackface sheep1
2008
The objectives of this study were 1) to estimate the heritability of lamb survival and growth in the Scottish Blackface breed; 2) to examine the relationship between lamb survival and live BW; and 3) to investigate the possibility of using lamb survival in a breeding program for this breed. The data used for the analyses contained information about survival and live BW at different ages on 4,459 animals. The records were collected from 1988 to 2003 in a Scottish Blackface flock. Live BW was recorded every 4 wk from birth to 24 wk. Survival was defined either by perinatal or postnatal mortality (up to weaning at 12 wk), or as cumulative survival to 1, 4, 8, and 12 wk. The pedigree file compr…
Distinct Clones of Yersinia pestis Caused the Black Death
2010
From AD 1347 to AD 1353, the Black Death killed tens of millions of people in Europe, leaving misery and devastation in its wake, with successive epidemics ravaging the continent until the 18th century. The etiology of this disease has remained highly controversial, ranging from claims based on genetics and the historical descriptions of symptoms that it was caused by Yersinia pestis to conclusions that it must have been caused by other pathogens. It has also been disputed whether plague had the same etiology in northern and southern Europe. Here we identified DNA and protein signatures specific for Y. pestis in human skeletons from mass graves in northern, central and southern Europe that …
GW170814: A Three-Detector Observation of Gravitational Waves from a Binary Black Hole Coalescence
2017
On August 14, 2017 at 10 30:43 UTC, the Advanced Virgo detector and the two Advanced LIGO detectors coherently observed a transient gravitational-wave signal produced by the coalescence of two stellar mass black holes, with a false-alarm rate of 1 in 27 000 years. The signal was observed with a three-detector network matched-filter signal-to-noise ratio of 18. The inferred masses of the initial black holes are 30.5-3.0+5.7M and 25.3-4.2+2.8M (at the 90% credible level). The luminosity distance of the source is 540-210+130 Mpc, corresponding to a redshift of z=0.11-0.04+0.03. A network of three detectors improves the sky localization of the source, reducing the area of the 90% credible regio…
The 30 Year Search for the Compact Object in SN 1987A
2018
Despite more than 30 years of searches, the compact object in Supernova (SN) 1987A has not yet been detected. We present new limits on the compact object in SN 1987A using millimeter, near-infrared, optical, ultraviolet, and X-ray observations from ALMA, VLT, HST, and Chandra. The limits are approximately 0.1 mJy ($0.1\times 10^{-26}$ erg s$^{-1}$ cm$^{-2}$ Hz$^{-1}$) at 213 GHz, 1 Lsun ($6\times 10^{-29}$ erg s$^{-1}$ cm$^{-2}$ Hz$^{-1}$) in optical if our line-of-sight is free of ejecta dust, and $10^{36}$ erg s$^{-1}$ ($2\times 10^{-30}$ erg s$^{-1}$ cm$^{-2}$ Hz$^{-1}$) in 2-10 keV X-rays. Our X-ray limits are an order of magnitude less constraining than previous limits because we use a…
Sex-ratio of Skylark Alauda arvensis broods in relation to timing of breeding.
2006
4 pages; International audience; Capsule Earlier broods tend to be more male biased than later broods.
L'incident est clos. Carlos Blacker, Salomon Reinach et le procès de Rennes
2014
International audience; L’image traditionnelle d’un XIXe siècle peu guerrier est trompeuse à maints égards. Car l’éclipse des champs de bataille sur le continent après 1815 n’a pas tant éradiqué la guerre qu’elle n’a favorisé la multiplication des expéditions ultramarines européennes et les expériences combattantes exotiques. La culture de l’héroïsme et le poids du modèle militaro-viril faisaient craindre aux vétérans de sortir du cercle de la guerre et à la jeunesse romantique de n’y point entrer. D’où l’importance de relier plus fortement les sorties de guerres napoléoniennes et le déploiement des conquêtes coloniales européennes, françaises en particulier. En liant autrement qu’hier le g…