Il dramma tedesco del nostro secolo; lezioni fatte nella R. Accademia scientifico-letteraria di Milano.

-1. Enrico di Kleist.-2. I psicologi, Federico Hebbel.-3. Francesco Grillparzer.

Dr. Hugo Zuckermann, ein Gedenkblatt /

Mode of access: Internet.

Praktische anleitung zur kenntniss und verfertigung lateinischer verse.

Mode of access: Internet.

Das deutsche drama des neunzehnten jahrhunderts in seinen hauptvertretern,

Mode of access: Internet.

Ludwig Anzengruber,

Mode of access: Internet.

Die Bearbeitungen der Geschichte von dem Bergmann von Fahlun.

Thesis (doctoral)--Konigliche Friedrich-Wilhelms-Universitat, Berlin.

Beitrage zur kenntnis der physiologischen beziehungen der schwe...

Thesis (doctoral)--

Recherches sur l'acide trimelliq.

Thesis (doctoral)--

Uber die einwirkung von senfolen auf aromatische kohlenwasserst...

Thesis (doctoral)--

Ueber die oxyisoterebinsaure und das isoheptodilacton.

Thesis (doctoral)--

Magnetosomal matrix: ultrafine structure may template biomineralization of magnetosomes

The organic matrix surrounding bullet-shaped, cubo-octahedral, D-shaped, irregular arrowhead-shaped, and truncated hexa-octahedral magnetosomes was analysed in a variety of uncultured magnetotactic bacteria. The matrix was examined using low- (80 kV) and intermediate- (400 kV) voltage TEM. It encapsulated magnetosomes in dehydrated cells, ultraviolet-B-irradiated dehydrated cells and stained resin-embedded fixed cells, so the apparent structure of the matrix does not appear to be an artefact of specimen preparation. High-resolution images revealed lattice fringes in the matrix surrounding magnetite and greigite magnetosomes that were aligned with lattice fringes in the encapsulated magnetosomes. In all except one case, the lattice fringes had widths equal to or twice the width of the corresponding lattice fringes in the magnetosomes. The lattice fringes in the matrix were aligned with the {311}, {220}, {331}, {111} and {391} related lattice planes of magnetite and the {222} lattice plane of greigite. An unidentified material, possibly an iron hydroxide, was detected in two immature magnetosomes containing magnetite. The unidentified phase had a structure similar to that of the matrix as it contained {311}, {220} and {111} lattice fringes, which indicates that the matrix acts as a template for the spatially controlled biomineralization of the unidentified phase, which itself transforms into magnetite. The unidentified phase was thus called pre-magnetite. The presence of the magnetosomal matrix explains all of the five properties of the biosignature of the magnetosomal chain proposed previously by Friedmann et al. and supports their claim that some of the magnetite particles in the carbonate globules in the Martian meteorite ALH84001 are biogenic. Two new morphologies of magnetite magnetosomes are also reported here (i.e. tooth-shaped and hexa-octahedral magnetosomes). Tooth-shaped magnetite magnetosomes elongated in the [110] direction are reported, and are distinct from arrowhead-shaped and bullet-shaped magnetosomes. Elongation of magnetite magnetosomes in the [110] direction has not been reported previously. A Martian hexa-octahedral magnetite particle was previously characterized by Thomas-Keptra et al. and compared with truncated hexa-octahedral magnetite magnetosomes. Hexa-octahedral magnetite magnetosomes with the same morphology and similar sizes and axial ratios as those reported by Thomas-Keptra et al. are characterized here. These observations support their claim that ALH84001 contains evidence for a past Martian biota.

FORMAÇÃO DE PROFESSORES EM ATPC: UMA LEITURA A PARTIR DOS DADOS DO SARESP

Este estudo traz resultados de uma pesquisa em abordagem qualitativa sobre o Sistema de Avaliação de Rendimento Escolar do Estado de São Paulo, o SARESP. O objetivo foi efetuar uma leitura dos resultados do SARESP em busca de uma informação especifica: a Aula de Trabalho Pedagógico Coletivo (ATPC). Toma-se por problemática, a análise oficial para os resultados apresentados em 2011 pelos alunos do 3° ano do ensino fundamental na prova de Língua Portuguesa: Esse desempenho positivo parece refletir os muitos esforços [...] em relação ao fomento de atividades de formação e de orientações pedagógicas aos professores . Considerando que a ATPC é o principal contexto para formar e orientar o professor, questionou-se: O que informa o SARESP a respeito da ATPC? Para minimizar essa incerteza fez-se uma leitura do Relatório dos Estudos do SARESP (2010 e 2011) um documento elaborado a partir das informações coletadas pelos questionários aplicados a alunos, pais e equipe escolar. Essa pesquisa centrou-se nas perguntas, respostas e análises do SARESP sobre a ATPC. A recolha dos dados foi instrumentalizada por uma pesquisa documental com uso da técnica documentação (SEVERINO, 2012 e LAKATOS; MARCONI, 1991). A análise dos dados foi organizada em dois momentos: Análise documental (CELLARD, 2012) e Análise de Conteúdo (BARDIN, 2012 e FRANCO, 2012). O estudo apresenta alguns aspectos da avaliação nacional e avaliações subnacionais (BONAMINO; SOUSA, 2012; BONAMINO; FRANCO, 1999; PESTANA, 1997 e BROOKE, 2006 e 2008), e algumas considerações sobre os questionários e os relatórios como instrumentos utilizados por sistemas de avaliação (MINAYO, 2005; ELLIOT; HILDEBRAND; BERENGER, 2012). Os resultados foram organizados em dois eixos: a coleta e, a análise dos documentos. Em relação a coleta, a pesquisa mostrou que houve dificuldade em localizar os documentos do SARESP podendo indicar que a memória da rede estadual paulista em relação a essa política pública possa estar se perdendo. Em relação a análise dos documentos, os resultados apontaram que a ATPC é um dado coletado pelos questionários contextuais da equipe escolar e analisado pelo SARESP, os resultados dessa análise são apresentados no documento Relatório dos Estudos do SARESP e trazem informações especificas sobre a sua organização, assuntos tratados e principais responsáveis. A leitura e a análise dessas informações apontam que: a formação do professor em ATPC pautada nas orientações da SEE-SP não foi uma opção de resposta oferecida ao professor; essas reuniões fazem uso restrito da Proposta Curricular e a participação do diretor nessas reuniões foi apresentada no relatório de 2011 como um fator associado ao desempenho positivo dos alunos do 3° ano do ensino fundamental.

Gravity collapse structures in the Central Precordillera fold-andthrust belt, Argentina

Several landforms found in the fold-and-thrust belt area of Central Precordillera, Pre-Andes of Argentina, which were often associated with tectonic efforts, are in fact related to non-tectonic processes or gravitational superficial structures. These second-order structures, interpreted as gravitational collapse structures, have developed in the western flank of sierras de La Dehesa and Talacasto. These include rock-slides, rock falls, wrinkle folds, slip sheets and flaps, among others; which together constitute a monoclinal fold dipping between 30º and 60º to the west. Gravity collapse structures are parallel to the regional strike of the Sierra de la Dehesa and are placed in Ordovician limestones and dolomites. Their sloping towards the west, the presence of bed planes, fractures and joints; and the lithology (limestone interbedded with incompetent argillaceous banks) would have favored their occurrence. Movement of the detached structures has been controlled by lithology characteristics, as well as by bedding and joints. Detachment and initial transport of gravity collapse structures and rockslides in the western flank of the Sierra de la Dehesa were tightly controlled by three structural elements: 1) sliding surfaces developed on parallel bedded strata when dipping >30° in the slope direction; 2) Joint’s sets constitute lateral and transverse traction cracks which release extensional stresses and 3) Discontinuities fragmenting sliding surfaces.  Some other factors that could be characterized as local (lithology, structure and topography) and as regional (high seismic activity and possibly wetter conditions during the postglacial period) were determining in favoring the steady loss of the western mountain side in the easternmost foothills of Central Precordillera.

El PCE y el movimiento comunista internacional (1969-1977)

El artículo se centra en la actividad internacional del Partido Comunista de España (PCE) desde las secuelas de la represión de la Primavera de Praga hasta 1977. Fue un período caracterizado por el principio del declive definitivo del movimiento comunista internacional. El análisis abarca múltiples cuestiones. Examina las crecientes críticas del PCE hacia el modelo soviético, y sus repercusiones en las relaciones entre el partido liderado por Santiago Carrillo y el movimiento comunista. Además, el artículo explora el intento del PCE de promover un nuevo tipo de internacionalismo en Europa occidental, auspiciando una renovada colaboración entre comunistas y socialistas y aprovechando las condiciones brindadas por la distensión. En este contexto tuvo lugar el surgimiento del eurocomunismo, que el ensayo analiza ilustrando los factores internos y externos que determinaron su crisis en la segunda mitad de los setenta.

Durability of Ag-TiO(2) Photocatalysts Assessed for the Degradation of Dichloroacetic Acid

The stability of Ag-TiO(2) photocatalysts was examined for the photocatalytic degradation of dichloroacetic acid (DCA) as a function of the recycling times. The photocatalytic activity was investigated by measuring the rate of H(+) ions released during the photodegradation of DCA and confirmed by measuring the total organic carbon removal. The photodegradation reactions were studied at pH 3 and pH 10 for a series of Ag-TiO(2) photocatalysts as different with Ag loadings. All the Ag-TiO(2) and bare TiO(2) photocatalysts showed a decrease in photocatalytic activity on recycling for the DCA photodegradation reaction. The decrease in activity can be attributed to poisoning of active sites by Cl(-) anions formed during the photocatalytic DCA degradation. The photocatalytic activity was, however, easily recovered by a simple washing technique. The reversibility of the poisoning is taken as evidence to support the idea that the recycling of Ag-P25 TiO(2) photocatalysts does not have a permanent negative effect on their photocatalytic performance for the degradation of DCA. The choice of the preparation procedure for the Ag-TiO2 photocatalysts is shown to be of significant importance for the observed changes in the photocatalytic activity of the Ag-TiO2 particles. Copyright (C) 2008 Victor M. Menendez-Flores et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.