Search results for " MAI"

Viewing the Sun as an X-ray star

2003

The Sun is the late-type star we can study with the highest level of detail. In the interpretation of stellar data, therefore, it is often assumed that the physical processes of the coronae of late-type stars are similar to those of the solar corona, i.e. the "solar-stellar analogy". In order to investigate the validity of this assumption, we have started a program to study systematically the Sun as an X-ray star. Our program aims to explore how far the solar model can be applied to other stars. In this paper we review the results obtained from these studies and, in particular, we discuss the variability of a star identical to the Sun during its cycle, the contribution of different coronal …

Coronal properties of G-type stars in different evolutionary phases

2005

We report on the analysis of XMM-Newton observations of three G-type stars in very different evolutionary phases: the weak-lined T Tauri star HD 283572, the Zero Age Main Sequence star EK Dra and the Hertzsprung-gap giant star 31 Com. They all have high X-ray luminosity (10^31 erg/s for HD 283572 and 31 Com and 10^30 erg/s for EK Dra). We compare the Emission Measure Distributions (EMDs) of these active coronal sources, derived from high-resolution XMM-Newton grating spectra, as well as the pattern of elemental abundances vs. First Ionization Potential (FIP). We also perform time-resolved spectroscopy of a flare detected by XMM from EK Dra. We interpret the observed $EMD$s as the result of …

Le système technologie, marché du travail et gestion de la main d'oeuvre : l'exemple de l'industrie électrique et électronique française au Brésil

1983

Pašvadīta koučinga ietekme uz darba pašefektivitāti

2018

Pētījuma “Pašvadīta koučinga ietekme uz darba pašefektivitāti” mērķis bija noskaidrot pašvadīta koučinga ietekmi uz darba pašefektivitāti un tās saistību ar pamata pašnovērtējumu un gatavību mainīties. Pētījumā pieteicās 176 dalībnieki, kuri randomizēti tika iedalīti eksperimentālā un kontroles grupā ar mērķi paaugstināt dalībnieku darba pašefektivitāti vai laimes izjūtu. Tika veikti divi darba pašefektivitātes, pamata pašnovērtējuma un gatavības mainīties mērījumi. Otro mērījumu veica 75 dalībnieki. Pētījuma rezultāti norāda, ka neatkarīgi no dalības grupā, četru nedēļu pašvadīta koučinga programma paaugstina darba pašefektivitāti un norāda uz pozitīvu saistību starp darba pašefektivitāti,…

Sex and Gender Equality Policies in Education in Three Southern European Societies: the cases of Andalusia and Valencian Community (Spain) and Portug…

2020

Gender mainstreaming is an international strategy in Europe relating to gender equality using an intersectional approach. It deals, specifically, with new challenges for sexuality and diversity in education. From within this context, this paper focuses on two goals. The first is to analyse sex and gender equality policies in education, since the 2000s, in three Southern European societies: Andalusia and Valencian Community, in Spain, and Portugal. The second goal is to arrive at some comparative conclusions about the recent developments in sex and gender equality policies in education in these three societies. We end with some comparative conclusions. First, there is the political orientati…

Detection of Signals in MC–CDMA Using a Novel Iterative Block Decision Feedback Equalizer

2022

This paper presents a technique to mitigate multiple access interference (MAI) in multicarrier code division multiple access (MC-CDMA) wireless communications systems. Although under normal circumstances the MC-CDMA system can achieve high spectral efficiency and resistance towards inter symbol interference (ISI) however when exposed to substantial nonlinear distortion the issue of MAI manifests. Such distortion results when the power amplifiers are driven into saturation or when the transmit signal experiences extreme adverse channel conditions. The proposed technique uses a modified iterative block decision feedback equalizer (IB-DFE) that uses a minimal mean square error (MMSE) receiver …

Crescere in IPM. Il trattamento dei giovani adulti autori di reato

2017

Il trattamento dei giovani adulti all’interno delle strutture penitenziarie minorili, in seguito all’emanazione del D.L. 92/14 convertito in legge nel mese di agosto dello stesso anno, impone una riflessione e un’analisi sulle opportune modalita trattamentali non solo per i soggetti minorenni ma anche per giovani adulti tra i 18 e i 25 anni. Confrontarsi, infatti, con l’esigenza di rispondere in modo adeguato ai bisogni di una nuova tipologia di utenza e il principale compito dell’educatore penitenziario che necessita di programmi di formazione per acquisire competenze specifiche e costruire idonei percorsi trattamentali. Questi, se dotati di senso e rispondenti alle necessita di crescita d…

Reduced levels of membrane-bound alkaline phosphatase in Vip3Aa-resistant Heliothis virescens

2020

ABSTRACTThe Vip3Aa insecticidal protein fromBacillus thuringiensis(Bt) is produced by specific transgenic corn and cotton varieties for efficient control of target lepidopteran pests. The main threat to this technology is the evolution of resistance in targeted insect pests, thus understanding the mechanistic basis of resistance is crucial to deploy the most appropriate strategies for resistance management. In this work, a laboratory-selected colony ofHeliothis virescens(Vip-Sel) highly resistant to the Vip3Aa protein was used to test whether an alteration of membrane receptors in the insect midgut might explain the resistance phenotype. Binding of125I-labeled Vip3Aa to brush border membran…

Resistant management of Bt corn and sustainability in Italy

2006

The Resistant Management (RM) of Bt corn in US requires 20% refuge area planted with non transgenic maize to preserve susceptible individuals of the pest. In Europe, especially in Italy, different considerations are necessary when RM plans are to be applied. In fact, when determining the size of the refuge areas other aspects around the transgenic corn, such as the surface of co-existing plans and other crops, must be considered. ECB is a polyphagous insect and its biology must be taken into account in the RM, especially in Italy where several crops and natural areas exist close to each other, and where field surfaces are clearly smaller than in the US. An important aspect of RM is the dete…

A simple DNA extraction method suitable for PCR detection of genetically modified maize.

2010

BACKGROUND: The polymerase chain reaction (PCR) is a powerful tool that is being increasingly used for detection of transgenic DNA. PCR requires only a minute quantity of template, but sensitive and accurate testing requires DNA of sufficient purity and free from inhibitors such as plant polysaccharides. Several standard protocols are available for this purpose, but they usually involve several steps, imply destruction of the maize kernel, or are time-consuming. Our aim was to develop a fast and simple extraction method to isolate a raw DNA-containing solution from maize tissues suitable for use as a template in a PCR-based detection assay with specific oligonucleotides directed to the iden…