U.S. Representatives to the NGO conference: Jewel Lafontant, Patricia Hutar, Joan Goodin, and Arvonne Fraser

General note: Title and date provided by Bettye Lane.

Joan Mondale at the Democratic National Convention

General note: Title and date provided by Bettye Lane.

Joan Micklin Silver at filmmakers symposium

General note: Title and date provided by Bettye Lane.

(L-R) Claudia Weill, Lee Grant, and Joan Michlin Silver at filmmakers symposium

General note: Title and date provided by Bettye Lane.

Site controlled red-yellow-green light emitting InGaN quantum discs on nano-tipped GaN rods

We report a method of growing site controlled InGaN multiple quantum discs (QDs) at uniform wafer scale on coalescence free ultra-high density (>80%) nanorod templates by metal organic chemical vapour deposition (MOCVD). The dislocation and coalescence free nature of the GaN space filling nanorod arrays eliminates the well-known emission problems seen in InGaN based visible light sources that these types of crystallographic defects cause. Correlative scanning transmission electron microscopy (STEM), energy-dispersive X-ray (EDX) mapping and cathodoluminescence (CL) hyperspectral imaging illustrates the controlled site selection of the red, yellow and green (RYG) emission at these nano tips. This article reveals that the nanorod tips' broad emission in the RYG visible range is in fact achieved by manipulating the InGaN QD's confinement dimensions, rather than significantly increasing the In%. This article details the easily controlled method of manipulating the QDs dimensions producing high crystal quality InGaN without complicated growth conditions needed for strain relaxation and alloy compositional changes seen for bulk planar GaN templates.

Joan Fontcuberta: fotografía de la sospecha

Acercamiento a la fotografía del autor catalán Joan Fontcuberta, basándome en sus escritos y su filosofía por la que explica que detrás de toda fotografía existe una mentira. Con su obra, manteniendo un toque de ironía e incluso humor, pretende sembrar en el espectador la duda sobre la realidad que presenta con sus obras.

Filosofía de la finitud Joan-Carles Mèlich Barcelona: Herder, 2002

Los mismos pasos que la escritura va marcando mien­tras se propone la semblanza del pensamiento empiezan a difuminarse como un pasado en riesgo de ser desmentido por el presente. La temporalidad de la existencia se cumple en actos ininterrumpidos que alteran lo que puede ser con­cebido como esencia. El espacio también es en el tiempo, así como los cuerpos y fenómenos que construyen los paisajes de la realidad en la cual habitamos. Pero habitar no significa corresponder con lo habitual del espacio, del tiempo, los acontecimientos y las circunstancias. Habitar es construir la vida en herme­néutica con la finitud, reinventándonos en la obra humana; en la escultura del lenguaje, de la narración; en el asombro por las nuevas facetas e identidades que logramos y abandonamos sin vestigios de apego.

Apoplastic And Intracellular Plant Sugars Regulate Developmental Transitions In Witches' Broom Disease Of Cacao.

Witches' broom disease (WBD) of cacao differs from other typical hemibiotrophic plant diseases by its unusually long biotrophic phase. Plant carbon sources have been proposed to regulate WBD developmental transitions; however, nothing is known about their availability at the plant-fungus interface, the apoplastic fluid of cacao. Data are provided supporting a role for the dynamics of soluble carbon in the apoplastic fluid in prompting the end of the biotrophic phase of infection. Carbon depletion and the consequent fungal sensing of starvation were identified as key signalling factors at the apoplast. MpNEP2, a fungal effector of host necrosis, was found to be up-regulated in an autophagic-like response to carbon starvation in vitro. In addition, the in vivo artificial manipulation of carbon availability in the apoplastic fluid considerably modulated both its expression and plant necrosis rate. Strikingly, infected cacao tissues accumulated intracellular hexoses, and showed stunted photosynthesis and the up-regulation of senescence markers immediately prior to the transition to the necrotrophic phase. These opposite findings of carbon depletion and accumulation in different host cell compartments are discussed within the frame of WBD development. A model is suggested to explain phase transition as a synergic outcome of fungal-related factors released upon sensing of extracellular carbon starvation, and an early senescence of infected tissues probably triggered by intracellular sugar accumulation.

O livro como recurso didatico no ensino do futebol

Universidade Estadual de Campinas. Faculdade de Educação Física

Correlation between metal-ceramic bond strength and coefficient of linear thermal expansion difference

The purpose of this study was to evaluate the metal-ceramic bond strength (MCBS) of 6 metal-ceramic pairs (2 Ni-Cr alloys and 1 Pd-Ag alloy with 2 dental ceramics) and correlate the MCBS values with the differences between the coefficients of linear thermal expansion (CTEs) of the metals and ceramics. Verabond (VB) Ni-Cr-Be alloy, Verabond II (VB2), Ni-Cr alloy, Pors-on 4 (P), Pd-Ag alloy, and IPS (I) and Duceram (D) ceramics were used for the MCBS test and dilatometric test. Forty-eight ceramic rings were built around metallic rods (3.0 mm in diameter and 70.0 mm in length) made from the evaluated alloys. The rods were subsequently embedded in gypsum cast in order to perform a tensile load test, which enabled calculating the CMBS. Five specimens (2.0 mm in diameter and 12.0 mm in length) of each material were made for the dilatometric test. The chromel-alumel thermocouple required for the test was welded into the metal test specimens and inserted into the ceramics. ANOVA and Tukey's test revealed significant differences (p=0.01) for the MCBS test results (MPa), with PI showing higher MCBS (67.72) than the other pairs, which did not present any significant differences. The CTE (10-6 oC-1) differences were: VBI (0.54), VBD (1.33), VB2I (-0.14), VB2D (0.63), PI (1.84) and PD (2.62). Pearson's correlation test (r=0.17) was performed to evaluate of correlation between MCBS and CTE differences. Within the limitations of this study and based on the obtained results, there was no correlation between MCBS and CTE differences for the evaluated metal-ceramic pairs.