Geriatria : arvioinnista kuntoutukseen

Kirjallisuusarvostelu

Näkökulmia kulttuurigerontologiaan : kokemuksia Lleidan symposiumista

The 6th International Symposium on Cultural Gerontology ; Lleidaa muistellen ; Innostus, väsymys, transsendenssi.

Konstruktionistista ja realistista ikääntymistutkimusta

Ikääntyminen, hyvinvointi ja teknologia -tutkijakoulun, Ikäinstituutin sekä Kasvun ja vanhenemisen tutkijat ry:n yhteisseminaari Helsingissä 1.-2.12.2008.

Surface Modification of Ceramics

Ceramics are widely used in industrial applications due to their advantageous thermal and mechanical stability. Corrosion of ceramics is a great problem resulting in significant costs. Coating is one method of reducing adversities of corrosion. There are several different thin film deposition processes available such as sol-gel, Physical and Chemical Vapour Deposition (PVD and CVD). One of the CVD processes, called Atomic Layer Deposition (ALD) stands out for its excellent controllability, accuracy and wide process capability. The most commonly mentioned disadvantage of this method is its slowness which is partly compensated by its capability of processing large areas at once. Several factors affect the ALD process. Such factors include temperature, the grade of precursors, pulse-purge times and flux of precursors as well as the substrate used. Wrongly chosen process factors may cause loss of self-limiting growth and thus, non-uniformities in the deposited film. Porous substrates require longer pulse times than flat surfaces. The goal of this thesis was to examine the effects of ALD films on surface properties of a porous ceramic material. The analyses applied were for permeability, bubble point pressure and isoelectric point. In addition, effects of the films on corrosion resistance of the substrate in aqueous environment were investigated. After being exposured to different corrosive media the ceramics and liquid samples collected were analysed both mechanically and chemically. Visual and contentual differences between the exposed and coated ceramics versus the untreated and uncoated ones were analysed by scanning electron microscope. Two ALD film materials, dialuminium trioxide and titanium dioxide were deposited on the ceramic substrate using different pulse times. The results of both film materials indicated that surface properties of the ceramic material can be modified to some extent by the ALD method. The effect of the titanium oxide film on the corrosion resistance of the ceramic samples was observed to be fairly small regardless of the pulse time.

Suomen talouden puinen perusta

Kirjallisuusarvostelu

Ikäihmisten kuntoutuksessa välittyvä ja rakentuva tieto : lectio praecursoria

Ulla Salmelaisen väitöskirja Tiedon välittyminen ja rakentuminen kuntoutuksessa : moniammatillinen asiantuntijayhteistyö ikäihmisten laitosmuotoisessa kuntoutuksessa (Turun yliopisto 2008).

Rukous on perintöä suvusta sukuun : lectio praecursoria

Jenni Spännärin väitöskirja "Rukous on perintöä suvusta sukuun" : ikääntyneet ja uskonto vuosituhannen vaihteen Suomessa (Helsingin yliopisto 2008).

Iäkkäiden ihmisten uskonnollinen viestintä

Jenni Spännärin käytännöllisen teologian väitöskirja tarkastettiin 17.12.2008 Helsingin yliopistossa. Antti Karisto toimi tilaisuudessa vastaväittäjänä.