The emergence of nanotechnology has increased the concern of exposure to nanoparticles through inhalation. Studies have examined the performance of filtering facepiece respirators against engineered nanoparticles. This has been done by the generation and dispersal of certain particles in a given size distribution, which have then been run through experimental set-ups involving Condensation Particle Counters, Scanning Mobility Particle Sizers, and high efficiency performance filters for a set flow. Published studies have shown that the respirators used do provide expected levels of filtration protection against nanometer-sized particles. However, studies have not examined or applied different types of nanoparticle samples - different particle types have differing morphologies and physical characteristics that could affect filter performance. This study has exposed NIOSH-approved N95 facepiece respirators to six different types of engineered nanoparticles: aluminum oxide, iron oxide, single-walled carbon nanotubes, synthesized diamond, silicon dioxide, and titanium dioxide. In addition, N95 respirators have not been commonly exposed to differing concentrations of an aerosol in order to observe a shift in the primary penetrating particle size and a shift in the overall size distribution. This study challenged N95 respirators to four different concentrations of sodium chloride: 0.1, 1, 10, and 50 mg/ml. Another concern is whether or not a prolonged exposure of a single respirator affects the overall performance and protection from an aerosol, especially engineered nanoparticles, since very few studies have been done regarding this matter. N95 respirators were exposed to several types of engineered nanoparticles in a respirator testing apparatus at a set flow rate, examined for penetration with an SMPS, CPC, and DMA given these conditions: differing concentrations of sodium chloride, different engineered particles, and an extended duration of exposure to both sodium chloride and 15-nm titanium dioxide. This study showed that the primary penetrating particle size through an N95 facepiece respirator does increase and shift with increasing concentrations of an aerosol; however, the overall size distribution did not seem to shift much. Penetration decreased as sodium chloride concentration increased. Different nanoparticles had differing primary penetrating particle sizes through the respirator; however, penetration of these particles was similar to one another with the exception of iron oxide which had quite a high penetration percentage. A decrease in N95 respirator performance was observed when exposed to a 1 mg/ml solution of sodium chloride, as penetration increased with prolonged exposure. However, this did not seem to be the case when the respirator was exposed to a 6.67 mg/ml suspension of 15-nm titanium dioxide, as the penetration over the extended period of time was similar to one another.

Teachers' use of information and communication technologies (ICT) in the classroom has largely been studied to date with a focus on what is lacking. An important aspect that seems to have been understudied is how teachers' own histories and experiences of ICT connects to their teaching practices - in essence, focussing on what is 'present' and not what is 'missing'. This study examines five teachers working in the same school, but working very differently with ICT in their classrooms. The narratives of their lived experiences highlight the acquisition of their beliefs, attitudes and their in situ behaviours about the role of ICT in the classroom. A critical look at the factors responsible for shaping such behaviours suggests the value of understanding individuals' experiences when planning for technology-utilization, rather than prescribing a "teacher-proof" (Connelly & Clandinin, 1988) approach to technology uptake.

Teachers' use of information and communication technologies (ICT) in the classroom has largely been studied to date with a focus on what is lacking. An important aspect that seems to have been understudied is how teachers' own histories and experiences of ICT connects to their teaching practices - in essence, focussing on what is 'present' and not what is 'missing'. This study examines five teachers working in the same school, but working very differently with ICT in their classrooms. The narratives of their lived experiences highlight the acquisition of their beliefs, attitudes and their in situ behaviours about the role of ICT in the classroom. A critical look at the factors responsible for shaping such behaviours suggests the value of understanding individuals' experiences when planning for technology-utilization, rather than prescribing a "teacher-proof" (Connelly & Clandinin, 1988) approach to technology uptake.

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Une question demeure récurrente : les divisions qui subsistent depuis le XVIè siècle entre Catholiques, Luthériens et Réformés sont-elles autant d’ordre anthropologique que théologique ? Cette problématique paraissant pouvoir être soutenue, il convenait alors de déterminer les différends anthropologiques, de les analyser et de se demander s’ils sont une entrave à la Κοινωνία. L’étude de la situation au XVIè siècle a permis de conclure que les concepts anthropologiques portés par une philosophie existentielle ont joué un rôle important dans la rupture au sein de l’Église d’Occident. Le retour sur la pensée de Pannenberg, Moltmann, Rahner, théologiens de trois confessions différentes, autorise à dire qu’au XXè siècle la vision de l’homme a toujours une incidence sur les concepts théologiques, mais les différences sont de moins en moins séparatrices et deviennent souvent des dons à partager. L’analyse de dialogues œcuméniques a mis en évidence que les différends anthropothéologiques ont été partiellement réconciliés et font l’objet d’accords, voire d’une déclaration commune sur la Doctrine de la Justification. Aujourd’hui, un défi reste à relever celui d’une déclaration sur le Ministère en vue du partage à la même table eucharistique. Une démarche de consensus différencié serait une aide à la recherche d’une pleine communion. / An issue has been ever recurring : are the discords which have been going on since sixteenth century between Catholics, Lutherans, Calvinists as much anthropological as theological ? As this question can be supported it seems suitable to determine these anthropological disagreements, analyse them and wonder whether or not they are obstacle to the Κοινωνία. A study concerning the situation during the XVIth century has allowed to conclude that the anthropological concepts conveyed by an existential philosophy have played a mojor role in the severing within the Western Church. The return on the thoughts developed by Pannenberg, Moltmann and Rahner, theologians of three different confessions, allows us to tell that in the XXth. century man’s vision has always an incidence on the theological concepts but are less and less separative and are often gifts to be shared. The analysis of ecumenical dialogues have clearly shown that theanthropological disagreements have been partly reconciled and are now subject to consensus, even a joint declaration on the doctrine of justification. Today we have to take up a challenge about a declaration on the ministry in order to share the body of Christ at the same table. A differing consensus method could be a help to find a complete communion.