Letter - Henry O'Laughlin to H.K. Woodruff

Letter from Henry O’Laughlin, secretary of the Central Fire Station of St. Catharines, Ont. to H.K. Woodruff informing him that he was elected as an active member of the Citizens’ Hose Co. No. 1, March 14, 1883.

Reflections of reflections : authors, narrators and worlds inside and outside of autobiographical fiction

Mémoire numérisé par la Division de la gestion de documents et des archives de l'Université de Montréal

Pervaporation dehydration of isopropyl alcohol with NaY zeolite incorvorated hybrid membranes

With a solution technique, NaY zeolite incorporated, tetraethylorthosilicate-crosslinked poly(vinyl alcohol) membranes were prepared. The resulting membranes were tested for their ability to separate isopropyl alcohol/water mixtures by pervaporation in the temperature range of 30-50 degrees C. The effects of the zeolite content and feed composition on the pervaporation performance of the membranes were investigated. The experimental results demonstrated that both flux and selectivity increased simultaneously with increasing zeolite content in the membranes. This was explained on the basis of the enhancement of hydrophilicity, selective adsorption, and establishment of a molecular sieving action attributed to the creation of pores in the membrane matrix. The membrane containing 15 mass % zeolite exhibited the highest separation selectivity of 3991 with a flux of 5.39 X 10(-2) kg/m(2) h with 10 mass % water in the feed at 30 degrees C. The total flux and flux of water were close to each other for almost all the studied membranes, and this suggested that the membranes could be used effectively to break the azeotropic point of water/isopropyl alcohol mixtures to remove a small amount of water from isopropyl alcohol. From the temperature-dependent diffusion and permeation values, the Arrhenius activation parameters were estimated. The activation energy values obtained for water were significantly lower than those for isopropyl alcohol, and this suggested that the developed membranes had a higher separation efficiency for water/isopropyl alcohol systems. The activation energy values for total permeation and water permeation were found to be almost the same for all the membranes, and this signified that coupled transport was minimal because of the highly selective nature of the membranes. Positive heat of sorption values were observed in all the membranes, and this suggested that Henry's mode of sorption was predominant. (c) 2008 Wiley Periodicals, lnc.

Variação nômade: Henry Miller, filosofia e o combate contra o juízo

We discuss Henry Miller's novel Tropic of Cancer based on the concept of nomadism, as coined by Deleuze and Guattari. The relation between philosophy and literature is very productive for both. A phenomenon of dual capture between these two areas that is characteristic of a nomadic thinking: literature that engenders philosophy which, in turn, engenders literature, establishing connections, new relations between terms in a distinct nomad variation that dismisses the classical image of thought of its eminence: a perspective between philosophy and literature as form of discussing the nomadism in Miller's novel. Thus, the linkage between philosophy and literature aims to capture the Millerian paths on this new space of thought, which is achieved by giving up any origin, human or divine, and stands as productive thought that affirms the real in a combat waged against the faculty of judgment, or simply of Judgment, in all its forms.

Chemical and Sr isotopic compositions and timing of carbonate mineral precipitation, ODP Leg 115

The strontium isotope ratios of authigenic carbonates from Indian Ocean sea-floor basalts have been used to determine the timing of carbonate mineral precipitation and fluid flow. The samples include calcites from 57.2 Ma crust from Ocean Drilling Project (ODP) Site 715, and calcites, aragonites, and siderites from 63.7 Ma crust from ODP Site 707. At Site 715, calcite precipitation may have begun at any time after the basalts cooled, and it continued until approximately 31 Ma, or 26 m.y. after basalt eruption. At Site 707, aragonite and siderite did not begin to precipitate until about 36 Ma, almost 30 m.y. after basalt eruption, and continued to precipitate until at least 30 and 28 Ma, respectively. Calcite precipitation began at approximately 32 Ma and continued until 22 Ma. These ages suggest that vein mineral deposition and low-temperature fluid circulation in the ocean crust may continue for much longer periods of time than previously observed.