Low-Dimensional Materials for Disruptive Microwave Antennas Design

This chapter is devoted to a complete analysis of remarkable electromagnetic properties of nanomaterials suitable for antenna design miniaturization. After a review of state of the art mesoscopic scale modeling tools and characterization techniques in microwave domain, new approaches based on wideband material parameters identification (complex permittivity and conductivity) will be described from impedance equivalence formulation achievement by de-embedding techniques applicable in integrated technology or in free space. A focus on performances of 1D materials such as vertically aligned multi-wall carbon nanotube (VA-MWCNT) bundles, from theory to technology, will be presented as a disruptive demonstration for defense and civil applications as in radar systems

Women, Media, and Information/Communication Technology

Strategic Objectives: J1. Increase the participation and access of women to expression and decision-making in and through the media and new technologies of communication J2. Promote a balanced and non-stereotyped portrayal of women in the medi

Facteurs influençant la résilience écologique et économique d'un système agroforestier de cacao

Dans un contexte de changements climatiques et de dégradation des terres, les systèmes socioécologiques, c’est-à-dire la combinaison des systèmes sociaux et écologiques en interaction, sont de plus en plus soumis à des perturbations et à des stress. Identifier les principaux facteurs influençant leur résilience, soit leur capacité d’adaptation, apparaît nécessaire. Dans ce sillage, l’objectif de ce mémoire est d’identifier les facteurs influençant la capacité de résilience économique et écologique d’un système agroforestier de cacao, dans la région du Soconusco, au sud-ouest du Mexique. Elle met en exergue l'importance du capital humain et communautaire dans la résilience socioéconomique, ainsi que des pratiques de gestion dans la résilience des parcelles

Results Regarding the Influence of Plum (Prunus Domestica) Fruit Thinning over Production and Fruits Firmness

The removal of the excess fruit can be done in three stages: in the bud stage, by cuts, in the blossom stage, by chemical treatements and in the period when the fruit start to grow, through chemical treatements or through hand-thinning. In this study, chemical thinning was applied to flowers when 80% were open. The study took place in fruit-growing ecosystems Călacea and Steluța, different ecosystems in terms of climate, by analyzing 7 varieties of plum. On these varieties were conducted determinations regarding thinning influence on: flower pollination (%), fruit weight (g) and fruit firmness (Kgf/cm2). In Călacea fruit-growing ecosystem, regardless the treatment, ‚Tuleu Timpuriu’ variety registered the highest percentage of binding/ fertilized flowers (28.66%), and in Agroindustriala fruit-growing ecosystem, the highest percentage was obtained by ‚Vinete Românești’ variety (29.16%). Analyzing fruit firmness, in Călacea fruit-growing ecosystem, regardless the treatment, ‚Stanley’ variety registered the highest fruit firmness (36.95 kgf/cm2), and in Agroindustriala fruit-growing ecosystem, the highest values for fruit firmness were obtained by ‘Stanley’ (36.55 kgf/cm2). Analyzing fruit weight, in Călacea fruit-growing ecosystem the highest fruit weight (g) was registered by ‚Stanley’ variety (48.05g), and in Agroindustriala fruit-growing ecosystem the highest values for fruit weight were obtained by ‚Nectarină Roșie’ variety (53.41 g)

The Response of Several Plum Cultivars to Natural Infection with <i>Monilinia laxa, Polystigma rubrum </i>and<i> Stigmina carpophila</i>

The response to the attack of Monilinia laxa, Polystigma rubrum and Stigmina carpophila in natural conditions of infection of 13 plum cultivars were evaluated during three years, in a commercial orchard located in North-western of Romania. The studied cultivars were: ‘Topfirst’, ‘Nectarina rosie’, ‘Tuleu timpuriu’, ‘Hangata’, ‘Toptaste’, ‘Tuleu gras’, ‘Vinete de Italia’, ‘Stanley’, ‘Vinete romanesti’, ‘Tophit’, ‘Jojo’,‘Anna Späth’, ‘Topend’. The highest degree of flower attack by Monilinia laxa was recorded for ‘Stanley’, while the lowest attacks were registered on ‘Topend’, ‘Jojo’, ‘Tophit’ and ‘Nectarina rosie’. The best response regarding the attack on fruits proved to be with ‘Topend’, ‘Jojo’, ‘Tophit’ and ‘Topfirst’. These cultivars registered small values of attack degree (0.7-3.3%). The cultivars with the lowest attack degree of red staining caused by Polystigma rubrum were ‘Top End’, ‘Jojo’, ‘Tophit’, ‘Toptaste’, ‘Nectarina rosie’ and ‘Topfirst’. A high degree of attack was calculated on ‘Anna Späth’, ‘Vinete romanesti’, ‘Vinete de Italia’ and ‘Tuleu timpuriu’. These cultivars prove to be very sensitive to the red staining disease in natural conditions of infections. Cultivars ‘Top End’, ‘Jojo’, ‘Tophit’, ‘Toptaste’, ‘Nectarina rosie’ and ‘Topfirst’ were slightly attacked by Stigmina carpophila (5.3-7.3% attack degree). The low infections levels recommend the mentioned cultivars as possible genitors in plum breeding programs, for creating new genotypes with good response to diseases attack