Water treatment

spécisme, tout comme l'utilisation de la couleur de peau ou du genre pour justifier le statut de biens d'humains est du racisme ou du sexisme. » 37. Peter Singer, Op. cit., p. 2 : « The basic principle of equality does not require equal or identical treatment » ; Gary Francione, Op. cit., p. 35 : « Le principe d'égale considération exige que nous traitions des intérêts similaires de manière similaire à moins qu'il n'existe une raison moralement acceptable pour ne pas le faire. » 38. Peter Singer, Op.

longue haleine axée sur l’établissement de liens personnels dans ces marchés. Les principaux concurrents dans le marché de l’équipement d’épuration au Mexique et au Chili sont des entreprises étrangères comme Mako and Smith de Mexico, American Water Treatment, Parisienne des Eaux et Hyashi Corporation. Les concurrents nationaux sont des entreprises comme les Mexicaines Grupo Purica, Purimex et Arroyo SA et comme les Chiliennes Grupo Cloral et Aqua Industrias. Le Mexique est signataire des principales

technique I ever saw was in an AFS inoculation course. The technician took a second chill mold and struck off the top of the poured mold to wipe off any excess iron and the miscues. Then, promptly at 60 seconds, he tossed the entire mold into a bucket of water. (You might have to change that time with 8 inch wedges.) The wedge needs to be broken at the same distance from the pour basin each time. Closer to the pour basin will show less chill, further away will show more. Most molds have a small break line

throughout his work. Together with the Civil War of the 19th century, it was, he believed, the experience that touched the lives of most Americans. He himself learned that it was possible suddenly to lose everything, a lesson later reinforced by the treatment of the Jews during the war, and it is worth remembering that Miller is Jewish. When you know you can lose everything you have to decide what really matters in life, what is fundamental. In many of his plays, including All My Sons, he would insist

environnementale, telles celles concernant la qualité des rejets des eaux usées retournées à la nature ou encore la qualité de l'eau potable desservie aux citoyens. C’est ce que font l'EPA (Environmental Protection Agency) aux Etats-Unis ou le DWI (Drinking Water Inspectorate) en Angleterre. Un troisième rapport, intitulé « La Gouvernance de l’eau du Québec », parle explicitement de ces questions. Ces institutions ont aussi la responsabilité de faire respecter ces normes. La littérature et les recherches sont

could enable them to carry numerous and heavy loads, around 3500 B.C. Bronze tools as well, which lasted longer and sharper than copper. The potter’s wheel which allowed people to do potery faster. They manipulated soil for easier planting and so that water could get to the crops easier. So that’s how they learned to use irrigation, another famous invention. It was mostly during Spring that they had to face catastrophic flood so this helped a great deal! Mathematics; arithmetic was used to keep record

awards, Professor Lazarus revealed a longing in our Tuesday meals—a longing that led to the writing of this book. He felt dissatisfied with his treatment of emotional development in his classic book Emotion and Adaptation (1991). He felt he had not done justice to the nature of emotion in the human infant and toddler, and he almost entirely left out treatment of emotion at the other end of the spectrum, in aging. He felt that both areas of development—early life and the end of life—held secrets about

SRP28SA rotor (Hitachi). After the supernatant was removed, the total R N A pellet was washed with 80% ethanol and then the pellet was suspended in sterile water. Poly(A)+RNA was purified by one cycle of oligo(dT)-cellulose (Collaborative Research Laboratory) column chromatography, precipitated with ethanol, and resuspended in 200 Izl of sterile water. dosage of 30 J / m 2. The cells were labeled with [3H]thymidine (100 /zCi/ml) in a medium containing 1% FCS for 2.5 h at 37°C. Then the cells were washed

hydrolytic and transfer reactions on incubation with α-D-glucooligosaccharides. Transglucosylation can occur even at quite low substrate concentrations [Mc Cleary and Gibson, 1989]. The non-reducing D-glucosyl residue of maltose may be transfered to water (hydrolysis), to D-glucosyl residues released by hydrolysis, or to the non-reducing residue of maltose or every αglucooligosaccharide present in the solution. The transfer occurs most frequently to 6-OH group of the non reducing glucose unit, producing

to being a mutagen and potential carcinogen (Neumann et al. 1995; Berthe-Corti et al. 1998). Thus, the remediation of contaminated sites is important for human health and protection of ecosystems. Among the remediation processes used, wastewater treatments typically include filtration on activated carbon, incineration of the spent carbon, and disposal of the residual ash, © 2001 NRC Canada Can. J. Microbiol. 47: 559–566 (2001) DOI: 10.1139/cjm-47-6-559 560 Can. J. Microbiol. Vol. 47