Education for Global Citizenship. New ways to think, to act, to learn

In this article the author introduces a pilot project for international educational partnership in the field of Education for Global Citizenship outlining not only the project itself but its conceptual background. (DIPF/Orig.)In diesem Beitrag stellt die Autorin das Projekt Education for Global Citizenship vor. Dieses Projekt kann im Bereich internationaler pädagogischer Partnerschaften als Pilotprojekt angesehen werden. Es wird sowohl das Projekt selbst als auch sein konzeptioneller Hintergrund beschrieben. (DIPF/Orig.

Self-cleaning Properties of Thin Printed Layers of Titanium Dioxide

Tenké vrstvy oxidu titaničitého byly imobilizovány na sodnovápenatá skla a skelný uhlík použitím jak techniky materiálového tisku tak metodou chemického napařování. Pro přípravu titaničitých solů byly použity metody sol-gelu a nebo hydrotermální syntézy. Struktura připravených vrstev byla zkoumána rastrovací elektronovou mikroskopií a mikroskopií atomárních sil. Krystalická struktura připravených TiO2 byla analyzovány pomocí XRD metody. Fotoindukováná superhidrofility pripravených vzorků byla charakterizována měřením kontaktních úhlů. Fotokatalytická aktivity připravených vzorků byla testována na fotokatalytické oxidaci 2,6-dichlorindofenolu a kyseliny mravenčí. V případě sol-gel vrstev byl zkoumán vliv množství naneseného TiO2 a množství PEG, který byl do solu přidán jako praskliny potlačující činidlo. V případě hydrotermálních vrstev byl zkoumán vliv času a teploty syntézy a množství vrstev na výslednou účinnost vzorku. U chemicky napařených vzorků byl zjišťován vliv intenzity záření. Byla porovnána fotokatalitická aktivita vrstev připravených materiálovým tiskem a chemickým napařováním a byl vyhodnocen nejaktivnější vzorek.Titanium dioxide was immobilized on soda-lime glass substrates and glassy carbon substrates by two techniques: material printing and chemical vapour deposition. Two methods of sol preparation were used; sol-gel and hydrothermal synthesis. Morphology of all prepared titania layers were studied by scanning electron microscopy and atomic force microscopy analysis. Crystallite phase of prepared TiO2 was determined using XRD analysis. Photoinduced superhydrophilicity was examined using the sessile drop method. Photocatalytic activity was investigated as a degradation rate of 2,6-dichloroindophenol or formic acid. We studied the influence of sol-loading and amount of PEG on final activity in case of sol-gel process. PEG was added as an anticracking agent. The influence of time and temperature of hydrothermal synthesis or amount of layers on final efficiency was examined for hydrothermally synthesized samples. The influence of different intensities of irradiation was investigated for the layers deposited by CVD process. The activity of titania thin films prepared by material printing and CVD process was compared and the best sample was evaluated.

Relevamiento de la producción de lacasa en aislamientos de Colletotrichum (Ascomycota), agente causal de antracnosis de la Soja

Colletotrichum truncatum es el hongo patógeno más comúnmente asociado con la antracnosis de soja. Aunque la enzima ligninolítica lacasa se relaciona con la patogenicidad de un amplio rango de hongos fitopatógenos, su rol biológico en la interacción Colletotrichum -soja aún se desconoce. La extensión de la infección en la Argentina , nos ha llevado a examinar la producción de lacasa en cepas aisladas de plantas enfermas de soja de diferentes regiones de nuestro país. Se evaluó la producción in vitro de lacasa en diez cepas (ocho de ellas identificadas como C. truncatum ). Sólo seis, todas correspondientes a C. truncatum , produjeron lacasa cuando fueron cultivadas en un medio con pectina y asparagina. La máxima actividad en este medio (44 U/L) se detectó en la cepa BAFC 3102 (aislada en la Provincia del Chaco). La electroforesis en SDS PAGE de los sobrenadantes de cultivo reveló una única banda con actividad lacasa (peso molecular 67 kDa). La adición de CuSO 4 al medio incrementó hasta siete veces su producción (280 U/L en medio con glucosa), sin embargo la edad del cultivo o la composición del medio no produjeron variaciones en el patrón isoenzimático. Este es el primer reporte sobre producción de lacasa por C. truncatum.Colletotrichum truncatum is the most common pathogen fungus associated with soybean anthracnose. Although the lignin-degrading enzyme laccase has been implicated in pathogenicity of a wide range of plant pathogenic fungi, its biological role in the Colletotrichum -soybean disease system is unknown. The extent of the infection in our country led us to examine laccase production in Argentinean Colletotrichum strains isolated from diseased soybean plants from different geographic locations. Ten strains (eight of them identified as C. truncatum) , were screened for in vitro laccase production. Only six of the isolates, all of them C. truncatum , produced laccase activity when cultured on a defined medium based on pectin and asparagine as carbon and nitrogen sources, respectively. Strain BAFC 3102 (isolated from Chaco province), yielded the highest laccase titers (44 U/L) in this medium. Denaturing polyacrylamide gel electrophoresis of extracellular culture fluids revealed one band with laccase activity (mol wt 67 kDa). CuSO 4 addition to media with either glucose or pectin as carbon sources increased up to 7-fold laccase production (280 U/L in the glucose medium), but the pattern of isoenzyme was not affected by culture age or medium composition. This is the first report on laccase production by C. truncatum.Fil: Levin, Laura Noemí. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Micología y Botánica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Micología y Botánica; ArgentinaFil: Ramos, Araceli Marcela. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Micología y Botánica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Micología y Botánica; ArgentinaFil: Parisi, Matías. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Ciudad Universitaria. Instituto de Micología y Botánica. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales. Instituto de Micología y Botánica; ArgentinaFil: Gally, Marcela Edith. Universidad de Buenos Aires. Facultad de Agronomía. Departamento de Producción Vegetal. Cátedra de Fitopatología; Argentin

Resistant estimates for high dimensional and functional data based on random projections

We herein propose a new robust estimation method based on random projections that is adaptive and, automatically produces a robust estimate, while enabling easy computations for high or infinite dimensional data. Under some restricted contamination models, the procedure is robust and attains full efficiency. We tested the method using both simulated and real data.Comment: 24 pages, 6 figure

Regional railway transport funding in conditions of the Czech Republic and in the Pilsen region

Present situation in financing of regional railway transport does not allow sustainable development of transport services in a region and also often leads to further worsening of situation in rolling stock financing. This paper describes basic problems related to financing of regional transport services from regional budgets. Stability of regional railway transport financing in the future provides the resolution of government of the Czech Republic No. 1132/2009 from the 31st August 2009, for the renewal of rolling stock will be possible to get grants from the Regional operational program (ROP). Regional authorities have to decide how to prepare the long-term contract concerning the public service obligation. The question is how to choose the operator of regional trains and how to get the highest quality of provided services from amount incurred

BOOK REVIEW International/Transnational Relations (Vasile Puscas)

Published in English, as the author himself states in the “Introduction”, the volume addresses mainly the academic field – undergraduate students, MA students, PhD candidates, professors, and nevertheless, all who are interested in the study of International Relations (politicians, mass-media and administration representatives). Considering these circumstances, the printing of this scholarly work is all the more praised as the scientific research in our country has evolved in most of the sub-fields of International Relations, while starting to harmonize with the main European trends.International/Transnational Relations