Arvioitu teos: Külli Prillop, Karl Pajusalu, Eva Saar, Sven-Erik Soosaar & Tiit-Rein Viitso: Eesti keele ajalugu. varamu VI. Tartu: Tartu Ülikooli Kirjastus 2020. 420 s. isbn 978-9949-03-541-0.

Teos täyttää suomenkielisen tietokirjallisuuden aukkoa, sillä kasvatusteoriaa kokoavasti käsitteleviä ajantasaisia teoksia ei liikaa ole. Otsikon kuvaama aikajänne on aavistuksen mahtipontinen, kun ottaa huomioon, että pariin sataan sivuun puristettu valikoidusti eri aikojen kasvatusfilosofian ja -teorian käsittelyä.

The NH3-catalyzed formation of colloidal silica particles from tetra-ethyl-orthosilicate (TEOS) in methanol and ethanol is studied by means of light scattering and Raman spectroscopy. We find that the growth is characterized by an incubation period after which no significant nucleation takes place. The particles have uniform, non-fractal structure and show low polydispersity. In the presence of...

In this work it is proposed a novel antibacterial surface composed of an organicinorganic hybrid matrix of tetraethoxysilane (TEOS) and a weak polyelectrolyte like Poly(acrylic acid sodium salt) (PAA) which are deposited on glass slides by sol-gel method using the dip-coating technique [1]. This work is focused in the in situ synthesis of Ag nanoparticles (NPs) which are responsible of the anti...

Materials: Tetraethylorthosilicate (TEOS, 98%), aqueous ammonia (28%) were purchased from Sinopharm Chemical Reagent Co. Ltd.. Carbon black (99.5%, 30 nm) was purchased from Aladdin Co. Ltd.. Ethylene glycol (EG, 99%) and ethanol (99.9%) were purchased from J&K Co. Ltd.. Poly(ethylene glycol) methacrylate (PEGMA, Mn=360) and poly(ethylene glycol) diacrylate (PEGDA, Mn=700) was purchased from Si...

The core-shell structured mesoporous silica nanomaterials (MSNs) are experiencing rapid development in many applications such as heterogeneous catalysis, bio-imaging and drug delivery wherein a large pore volume is desirable. We develop a one-pot method for large-scale synthesis of brain-like mesoporous silica nanocomposites based on the reasonable change of the intrinsic nature of the -Si-O-Si...

Maleimide-functionalized polystyrene (PSMA-SiO2/TiO2) hybrid nanocomposites were prepared by sol-gel reaction starting from tratraethoxysilane (TEOS) and titanium isopropoxide in the solution of polystyrene maleimide in 1,4-dioxane. The hybrid films were obtained by the hydrolysis and polycondensation of TEOS and titanium isopropoxide in maleimide-functionalized polystyrene solution followed by...

An octadecyl-functionalized solid-phase microextraction (SPME) fiber was prepared by sol-gel technology with an anodized Ti wire as the substrate and dimethyloctadecyl[3-(trimethoxysilyl)propyl]ammonium chloride (C(18)-TMS) and tetraethoxysilane (TEOS) as sol-gel precursors. The anodized Ti wire has high mechanical strength and has numerous titanol groups on its surface for sol-gel reactions, c...

The first route is frequently used as the organic matrix is synthesized from free radical polymerization. In this work, we focused our studies on the other routes as the objective was to prepare hybrid materials from non-fonctionalised polyamidine and from functionalised polyamidine. The inorganic content, i.e. SiO2 equivalent content, of O/I materials was increased by adding tetraethoxysilane ...