Etiquetas de profesores, lastres de alumnos : 1ª parte.

Ofrece la primera parte de un estudio en el que se investigan las expectativas y prejuicios que poseen los profesores de educación infantil y primaria con respecto a los alumnos. Se presentan precisiones terminológicas sobre los siguientes conceptos: categorización, prejuicios, valoración, expectativas y autoexpectativas. Por último se apunta la investigación llevada a cabo por Rosenthal y Jacobson donde se demuestra que las expectativas de los profesores sobre los comportamientos de los alumnos determinan precisamente esas conductas.

(Table 1) Sympagic meiofauna and amphipods inhabiting the meltponds in the Central Arctic sampled during POLARSTERN cruise ARK-XXII/2

Meltponds on Arctic sea ice have previously been reported to be devoid of marine metazoans due to fresh-water conditions. The predominantly dark frequently also green and brownish meltponds observed in the Central Arctic in summer 2007 hinted to brackish conditions and considerable amounts of algae, possibly making the habitat suitable for marine metazoans. Environmental conditions in meltponds as well as sympagic meiofauna in new ice covering pond surfaces and in rotten ice on the bottom of ponds were studied, applying modified techniques from sea-ice and under-ice research. Due to the very porous structure of the rotten ice, the meltponds were usually brackish to saline, providing living conditions very similar to sub-ice water. The new ice cover on the surface had similar characteristics as the bottom layer of level ice. The ponds were thus accessible to and inhabitable by metazoans. The new ice cover and the rotten ice were inhabited by various sympagic meiofauna taxa, predominantly ciliates, rotifers, acoels, nematodes and foraminiferans. Also, sympagic amphipods were found on the bottom of meltponds. We suggest that, in consequence of global warming, brackish and saline meltponds are becoming more frequent in the Arctic, providing a new habitat to marine metazoans.

Trabalho docente e poder de agir : clínica da atividade, devires e análises

Dulcinea Sarmento Rosemberg, Jair Ronchi Filho, Maria Elizabeth Barros de Barros (organizadores)

Morphology and oxygen incorporation effect on antimicrobial activity of silver thin films

Ag and AgxO thin films were deposited by non-reactive and reactive pulsed DC magnetron sputtering, respectively, with the final propose of functionalizing the SS316L substrate with antibacterial properties. The coatings were characterized chemically, physically and structurally. The coatings nanostructure was assessed by X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS), while the coatings morphology was determined by scanning electron microscopy (SEM). The XRD and XPS analyses suggested that Ag thin film is composed by metallic Ag, which crystallizes in fcc-Ag phase, while the AgxO thin film showed both metallic Ag and Ag-O bonds, which crystalize in fcc-Ag and silver oxide phases. The SEM results revealed that Ag thin film formed a continuous layer, while AgxO layer was composed of islands with hundreds of nanometers surrounded by small nanoparticles with tens of nanometers. The surface wettability and surface tension parameters were determined by contact angle measurements, being found that Ag and AgxO surfaces showed very similar behavior, with all the surfaces showing a hydrophobic character. In order to verify the antibacterial behavior of the coatings, halo inhibition zone tests were realized for Staphylococcus epidermidis and Staphylococcus aureus. Ag coatings did not show antibacterial behavior, contrarily to AgxO coating, which presented antibacterial properties against the studied bacteria. The presence of silver oxide phase along with the development of different morphology were pointed as the main factors in the origin of the antibacterial effect found in AgxO thin film. The present study demonstrated that AgxO coating presented antibacterial behavior and its application in cardiovascular stents is promising.

Lottery Action, December 2-15 2002, Vol. 9, no. 23

Newsletter for Iowa Lottery

Anatomie descriptive des organes génitaux... organes de la femme et leurs fonctions ; organes de l'homme, mécanisme ; anomalies des organes génitaux ; androgynes

Collection : Bibliothèque médicale populaire et d'hygiène ; 1

[Voyage en Italie : 1824-1830]. , Coupe du Temple de Jupiter. Coupe du Forum. Sur une Echelle de 001 PM : [coupe longitudinale sur le temple, coupe transversale sur le forum] : [dessin] / h. L. [Henri Labrouste]

Référence bibliographique : Weigert, 371

Simultaneous determination of human plasma levels of citalopram, paroxetine, sertraline, and their metabolites by gas chromatography-mass spectrometry.

A gas chromatography-mass spectrometry method is presented which allows the simultaneous determination of the plasma concentrations of the selective serotonin reuptake inhibitors citalopram, paroxetine, sertraline, and their pharmacologically active N-demethylated metabolites (desmethylcitalopram, didesmethylcitalopram, and desmethylsertraline) after derivatization with the reagent N-methyl-bis(trifluoroacetamide). No interferences from endogenous compounds are observed following the extraction of plasma samples from six different human subjects. The standard curves are linear over a working range of 10-500 ng/mL for citalopram, 10-300 ng/mL for desmethylcitalopram, 5-60 ng/mL for didesmethylcitalopram, 20-400 ng/mL for sertraline and desmethylsertraline, and 10-200 ng/mL for paroxetine. Recoveries measured at three concentrations range from 81 to 118% for the tertiary amines (citalopram and the internal standard methylmaprotiline), 73 to 95% for the secondary amines (desmethylcitalopram, paroxetine and sertraline), and 39 to 66% for the primary amines (didesmethylcitalopram and desmethylsertraline). Intra- and interday coefficients of variation determined at three concentrations range from 3 to 11% for citalopram and its metabolites, 4 to 15% for paroxetine, and 5 to 13% for sertraline and desmethylsertraline. The limits of quantitation of the method are 2 ng/mL for citalopram and paroxetine, 1 ng/mL for sertraline, and 0.5 ng/mL for desmethylcitalopram, didesmethylcitalopram, and desmethylsertraline. No interferences are noted from 20 other psychotropic drugs. This sensitive and specific method can be used for single-dose pharmacokinetics. It is also useful for therapeutic drug monitoring of these three drugs and could possibly be adapted for the quantitation of the two other selective serotonin reuptake inhibitors on the market, namely fluoxetine and fluvoxamine.

Metsäteollisuuden ympäristölupa- ja valvontakäytäntöjen kehittämismahdollisuudet

Tämän kehityshankkeen tarkoituksena oli selvittää metsäteollisuuslaitosten ympäristölupa- ja valvontakäytäntöjen toimivuutta ja yhdenmukaisuutta sekä tarkastella erilaisia kehittämisvaihtoehtoja. Raportin alkupuolella on käsitelty metsäteollisuuslaitosten nykyisiä valvontakäytäntöjä sekä niiden vastaavuutta parhaan käyttökelpoisen tekniikan (BAT) vaatimusten kanssa. Erikseen on käsitelty rakennemuutoksen vaikutuksia liittyen uudentyyppisiin toimintoihin ja erilaisten laitosten lopettamiskäytäntöihin. Metsäteollisuuslaitosten toimintaa säätelevä lainsäädäntö ajankohtaisine muutoksineen on käyty läpi seuraavassa luvussa. Ympäristölupamääräysten yhtäläisyyksiä ja eroavuuksia käsitellään aiemmin tehtyjen selvitysten ja viimeisimpien lupapäätösten avulla. Lisäksi tarkastellaan keskeisiä valvonnan periaatteita. Lupa- ja valvontakäytäntöjen kehittämisvaihtoehtoja käydään läpi virkamiestyöryhmissä tehtyjen esitysten sekä muiden selvitysten ja teollisuuden kannanottojen pohjalta. Yksi keskeinen kehittämisalue näyttäisi olevan viranomaisten yhteistyön kehittäminen. Lisäksi tarkastellaan lainsäädännön uudistamismahdollisuuksia liittyen erityisesti teollisuuden päästödirektiivin (IED) täytäntöönpanoon ja ympäristönsuojelulain uudistamiseen. Raportin yhteenvedossa annetaan tämän hankkeen työryhmän kannanotto ympäristölupa- ja valvontakäytäntöjen kehittämiseksi. Lupakäytäntöjen osalta huomiota kiinnitetään mm. lupamääräysten yhdenmukaisuuteen, lupaprosessin sujuvuutta edistäviin tekijöihin sekä BAT-päätelmien voimaantuloon varautumiseen. Valvontakäytäntöjen osalta korostetaan keskeisten tehtävien priorisointia, viranomaisten yhteistyön lisäämistä ja kevennettyjen menettelyjen kehittämistä.

Joaquim Gadea Fernández : la vida d'un mestre. 'Joaquim Gadea Fernández : la vida de un maestro'.

Esta obra obtuvo el premio Baladre 1993 de l'Institut d'Estudis Eivissencs