(Zivilisiert euch endlich!)

Sin resumenSin resume

Rewriting Modernity

This article rereads Paul Virilio, drawing on the distinctionbetween topography and topology to argue a case for Virilio as a rewriter of modernity. Invoking Jean-François Lyotard’s notion of rewriting modernity as an unbroken process of accumulation founded on affective life in “Re-writing Modernity” and “Argumentation and Presentation: The Foundation Crisis,” it enlists topology as a horizontal spatial structure that enables us to rethink space, time,and modernity outside the limits of the “squared horizon,” where the“squared horizon” is viewed as a spatial and textual metaphor for framing perspectives on the past, present, and future. The analysis deconstructs the topography of the “squared horizon” as a relationality in an unfolding continuum, where spaces exist ontologically and where the immaterial forces of the dromospheric and the atmospheric generate a relational and historical connectedness

Contamination du lac Saint-Pierre (fleuve Saint-Laurent) par certains polluants organiques et inorganiques

L'étude s'inscrit dans le cadre d'un programme de surveillance de la dispersion des substances toxiques dans le fleuve Saint-Laurent. Elle vise à identifier la nature et le cheminement des substances toxiques dans différents compartiments du lac Saint-Pierre. D'une superficie totale de plus de 400 km2, ce lac est un élargissement du fleuve et son bassin de drainage inclut la région métropolitaine de Montréal et la région inter-nationale des Grands lacs. L'échantillonnage a porté sur l'eau, les matières en suspension, les sédiments de fond, les poissons adultes (entiers, chairs, foie, oeufs et gonades) et les poissons juvéniles (âge 0+). Des analyses chimiques ont été effectuées pour les métaux, les pesticides organochlorés, les biphényles polychlorés (PCB), les hydrocarbures aromatiques polycycliques (PAH) et les chlorobenzènes. Les résultats indiquent que la contamination du milieu aquatique par les substances toxiques est très significative. Les contaminants majeurs retrouvés dans les divers compartiments sont l'arsenic, le mercure, le plomb, les biphényles polychlorés (PCB) et les différentes formes de DDT. Les concentrations excèdent fréquemment les critères de qualité pour le mercure dans les chairs de poissons, le plomb dans l'eau et les sédiments et les PCB dans plusieurs compartiments analysés. Plusieurs pesticides organochlorés ont été détectés dans l'eau, grâce à la technique d'échantillonnage à grand volume. Cette technique permet d'estimer 1a concentration de fond et le bilan massique annuel d'un polluant. Les poissons entiers et le foie de lottes constituent par ailleurs des indicateurs de choix de la présence et de l'étendue de la contamination par les substances toxiques bioaccumulables, alors que les sédiments de fond et les poissons juvéniles permettent d'étudier leur répartition spatiale. Sauf pour le mercure, les concentrations dans les chairs sont un mauvais indicateur de la contamination du milieu; la moyenne et la variabilité des teneurs en PCB et pesticides organochlorés y sont très faibles.As part of a monitoring program on pollutants dispersion in the St. Lawrence river, a study was conducted in 1986 on the fate and pathways of toxic substances in Lake St. Pierre. This enlargement of the St. Lawrence drains the Montreal metropolitan area and the international great lakes region. Water, sediments and fish were collected and analyzed. Water was sampled following the conventional method (1 l) or passed through an XAD-2 resin column (70 l of centrifuged water). Suspended sediments were collected by centrifuging 2000 l of water. Bottom sediments were collected by retaining the top layer of a grab sample taken using an Eckman dredge. Young-of-the-year forage fishes (Spottail Shiner and Yellow Perch) were captured using a seine whereas adult fishes (Northern Pike, Walleye, Brown Bullhead, Yellow Perch, White Sucker, Bowfin and Burbot) were captured using hoop-nets and gill-nets. All samples were analyzed for metals, organochlorine pesticides, PCBs, PAHs and chlorobenzenes. Fishes were analyzed as homogenate of whole individuals (young-of-the-year and adult) and as homogenate of fish flesh. Results indicate that the level of contamination by toxic chemicals is highly significant. The major contaminants found in the different media are arsenic, mercury, iron, PCBs and various derivatives of DDT. The concentration frequently exceeds the guidelines suggested for mercury in fish flesh, iron in water and sediments and PCBs in most compartments analysed. Several organochlorine pesticides have been detected in water using Large Volume Sampling technique. This technique allows estimation of background concentration and annual mass balance for specific pollutants. Whole fishes and Burbot's livers are good indicators of the presence and concentration range of bioaccumulating toxic substances. Bottom sediments and juvenile fishes are good indicators of spatial distribution of toxic chemicals in the lake. PCB's highest concentrations are found in adult whole fish samples (mean of 1030 µg/kg). Bottom sediments concentrations show a higher mean (112 µg/kg) than for Lake St. Louis, located upstream of Montreal. Some PAHs and chlorobenzenes are occasionally detected in various compartments

Identifying Sumatran Peat Swamp Fish Larvae through DNA Barcoding, Evidence of Complete Life History Pattern

AbstractThe Eastern Sumatran peat swamp ecosystem is one of the most threatened and most poorly understood biotypes. Until recently, there is no scientific record concerning ichtyoplankton composition within this system and all fish's biodiversity research at this ecosystem relied on morphological diagnosis for adult stages. Two new fish records in this system, Rasbora pauciperforata and Ompok eugeneiatus were detected. Finally the authors concluded that, eleven fish species complete their life history in Eastern Sumatran peat swamp. This investigation enlarges the COI barcode database for the molecular identification of eastern Sumatran peat swamp fishes

Regler for menneskeparken

Peter Sloterdijk: Regler for menneskeparken - Et svar på Heideggers "Brev om humanismen"

Det sjæleliges tidsalder

Peter Sloterdijk: Det sjæleliges tidsalder - Af Nicht gerettet, 2001

Teoria delle sfere: Monologo sulle poetiche dello spazio

Conference by Peter Sloterdijk held at the Harvard Graduate School of Design on February 17th 2009. Conference then published in "Harvard Design Magazine", Spring / Summer 2009, 30, 1–8. We thank the author and the Harvard Graduate School of Design for their availability and courtesy.Conferenza di Peter Sloterdijk tenutasi alla Harvard Graduate School of Design il 17 febbraio 2009. Conferenza poi pubblicata in “Harvard Design Magazine”, Spring/Summer 2009, 30, 1–8. Ringraziamo l’autore e la Harvard Graduate School of Design per la loro disponibilità e cortesia