Vegetação do território do Alto Camaquã: obtenção, tratamento e classificação de imagens de satélite Landsat TM.

O território do Alto Camaquã; Síntese metodológica; Análise de imagens de satélite para a produção de uma carta de vegetação do Alto Camaquã.bitstream/item/31982/1/DT-106online.pd

Território do Alto Camaquã: apresentação da cobertura vegetal do Alto Camaquã junho de 2007.

O Território do Alto Camaquã; Apresentação da carta de vegetação do Território Alto Camaquã-RS; Apresentação do SIG LABECO-CPPSul; Apresentação do guia metodológico; Análise da carta de vegetação.bitstream/item/31990/1/DT-107online.pd

Nondestructive Structure Characterization by Laser-Ultrasonics

Peer reviewed: YesNRC publication: Ye

Membrane-bound guaiacol peroxidases from maize (Zea mays L.) roots are regulated by methyl jasmonate, salicylic acid, and pathogen elicitors

Plant peroxidases are involved in numerous cellular processes in plant development and stress responses. Four plasma membrane-bound peroxidases have been identified and characterized in maize (Zea mays L.) roots. In the present study, maize seedlings were treated with different stresses and signal compounds, and a functional analysis of these membrane-bound class III peroxidases (pmPOX1, pmPOX2a, pmPOX2b, and pmPOX3) was carried out. Total guaiacol peroxidase activities from soluble and microsomal fractions of maize roots were compared and showed weak changes. By contrast, total plasma membrane and washed plasma membrane peroxidase activities, representing peripheral and integral membrane proteins, revealed strong changes after all of the stresses applied. A proteomic approach using 2D-PAGE analysis showed that pmPOX3 was the most abundant class III peroxidase at plasma membranes of control plants, followed by pmPOX2a >pmPOX2b >pmPOX1. The molecular mass (63 kDa) and the isoelectric point (9.5) of the pmPOX2a monomer were identified for the first time. The protein levels of all four enzymes changed in response to multiple stresses. While pmPOX2b was the only membrane peroxidase down-regulated by wounding, all four enzymes were differentially but strongly stimulated by methyl jasmonate, salicylic acid, and elicitors (Fusarium graminearum and Fusarium culmorum extracts, and chitosan) indicating their function in pathogen defence. Oxidative stress applied as H2O2 treatment up-regulated pmPOX2b >pmPOX2a, while pmPOX3 was down-regulated. Treatment with the phosphatase inhibitor chantharidin resulted in distinct responses

Wrong Place, Right Time: '68 and the Impasses of Periodization

This essay critically approaches the use of “1968” as a periodizing category by contrasting historiographic and political debates on the event and aftermath of the French May with the spatial and temporal unevenness that attaches to Italy’s “long” 1968. We explore two interlocking dimensions of the latter: the reprise of the “Southern question” in the midst of this sociopolitical upheaval, on the one hand, and the potent if enigmatic image of an Italian “creeping May,” on the other. A political and historiographic reflection on the Italian case suggests the need to dislocate a linear, if punctuated, periodization of 1968, and to move toward an understanding of the crises and movements that cluster around this date through a framework anchored around the notion of rhythm conceived as the site of political and spatial unevenness

Towards a plurilingual habitus: engendering interlinguality in urban spaces

This article focuses on the potential of the multilingual city to create spaces in which monolingual hegemonies may be challenged, inclusive, intercultural values may be nurtured, and plurilingualism may be valorised. Following a contextualisation of linguistic diversity in theories of globalisation and superdiversity, discourses of deficit and power are addressed, arguing that the problematisation of multilingualism and pathologisation of plurilingualism reflect a monolingual habitus. Bringing about a shift towards a plurilingual habitus requires a Deep Approach, as it involves a critical revaluing of deep-seated dispositions. It suggests that the city offers spaces, which can engender interlinguality, a construct that includes interculturality, criticality and a commitment to creative and flexible use of other languages in shared, pluralistic spaces. It then proposes critical, participatory and ethnographic research in three multidimensional spaces: the urban school and a potential interlingual curriculum; networks, lobbying for inclusive policy and organising celebratory events in public spaces; and grass roots-level local spaces, some created by linguistic communities to exercise agency and maintain their languages and cultures, and some emerging as linguistically hybrid spaces for convivial encounter