Extending the Electron Spin Coherence Time of Atomic Hydrogen by Dynamical Decoupling

We study the electron spin decoherence of encapsulated atomic hydrogen in octasilsesquioxane cages induced by the 1H and 29Si nuclear spin bath. By applying the Carr-Purcell-Meiboom-Gill (CPMG) pulse sequence we significantly suppress the low-frequency noise due to nuclear spin flip-flops up to the point where a maximum T2 = 56 us is observed. Moreover, dynamical decoupling with the CPMG sequence reveals the existence of two sources of high-frequency noise: first, a fluctuating magnetic field with the proton Larmor frequency, equivalent to classical magnetic field noise imposed by the 1H nuclear spins of the cage organic substituents, and second, decoherence due to entanglement between the electron and the inner 29Si nuclear spin of the cage

The Natural Environment and Landscape As a Tool of Development for and Less Developed Areas: the Attitudes of the Municipality of Vegoritis About the Effects of the Rural Development Policy in the Area

A large number of areas in our country are characterized as mountainous and less developed due to some special characteristics of their natural environment and landscape, due to which agriculture operates under serious comparative disadvantages. However, at the same time, these special characteristics of he natural environment and landscape of the remote and mountainous areas can be considered as advantages for other income generating activities, such as alterative types of tourism. More specifically, hills, mountains and lakes, can attract visitors in the area and support leisure fun and sports activities like trekking, climbing, fishing, animal watching and outdoor sports, which can positevely contribute development for the local communities.Both visitors and people of the local communities can be benefited. Visitors relax in a peaceful natural environment whereas the residents of the area can diversify their activities in order to increase their income from other community-based sources. European Community Agricultural and Regional Policy emphasizes the role of the natural environment and landscape of mountainous areas in the community development. Special provision on the Agricultural Development Policy of CAP incorporates the environment in the local development strategy . Local Development Agencies apply a number of Local Development Plans(LDPs) and EU Initiatives, such as Leader in the EU regions with an emphasis on landscape and natural environment management, since 1988. This study examines the role of the LDPs in income generating, employment increase, infrastructure maintenance and improvement and the environment quality and preservation. The attitudes of permanent reseidences of a remote area-of the municipality of Vegoritida-Pella-Greece-towards LDP is also examined. The local stakeholders(residents) were interviewed during November-December 2005, having already a ten years experience of LDPs in their region. Data were processed with SPSS and useful results were drawn about the regional development policy in the agricultural area of Vegoritis

Semiotics of the Image: Addressing the Different Types of Mental Operation and Their Sematic Interpretation

Our era is dominated by the prevailing presence of images. The spectator often identifies with the characters and aims to interpret the signs evoked by the objects, since every image is governed by codes. If we look at the history of image semiotics, we observe a cognitive and pragmatic approach. According to Kant, the images we receive from the environment are not simply reproductions but often creative productions based on patterns generated by the imagination. According to recent research in semiotics, we observe that the pragmatic approach is extended by a study of stimuli collected by the environment. On the other hand, Köhler’s theory of Gestalt considers perception as a pre-conscious activity, linking visual semiology with the functional interpretation of perception. In addition, Tardy brings into focus strategies of visual communication by highlighting the semiotic status of represented objects. For this reason, it is essential to deepen the versatility of the field of semantic interpretation of a visual support from different types of mental operations. Finally, the semiological approach to the image with different types of mental operation will be able to generate a plural and original semantic interpretation through the creative exploitation of visual elements

The Contribution of Collaborative Tasks to the Development of Mediation Competencies through Learning Management Systems

In our digital era the adoption of innovative pedagogical approaches is based on the active involvement through collaborative tasks of the participants in the pedagogical process. In this context, mediation skills in the process of cultivating learning strategies play an essential role to the educational process and upgrade the contribution of the mentor-teacher, since the socio-emotional dimension of interpersonal relationships positively contributes to awareness and self-awareness. In addition, in an action-oriented approach, the creation of pedagogical scenarios through Learning Management Systems focuses on mediation skills through the exchange of experiences, skills and good practices, enabling each participant to exploit the group’s potential and to create strategic partnerships, which bring added value to the dynamic integration of the learners in social and professional frameworks

Oral Didactics in an Actional Approach: Manifesting Emotions and Involving the Limbic System in a Face-to-Face and in a Hybrid Context

In oral didactics, the nature of the interactions which are established among the members of the group grant a cognitive, socio-affective and behavioral dimension in order to implement collaborative tasks, linking conviviality and pragmatism. In collaborative distance learning, teachers and learners are able to share experiences as well as new IT tools, while multimodal and open approaches can facilitate exchanges among the participants who put pragmatic learning modes into practice. As a result, the promotion of new training requirements through the adoption of good educational practices, cultivates the knowledge of an action-centred creative potential. Therefore, acting and co-acting in a group’s face-to-face or even in a hybrid context becomes a new challenge for oral learning, since digital media can also condition the sensations but also the behavior of users, a fact which has consequences on the biological and neurological rhythm and psychological life of people involved in the learning process

Recommendations for In Vitro and In Vivo Testing of Magnetic Nanoparticle Hyperthermia Combined with Radiation Therapy

Magnetic nanoparticle (MNP)-mediated hyperthermia (MH) coupled with radiation therapy (RT) is a novel approach that has the potential to overcome various practical difficulties encountered in cancer treatment. In this work, we present recommendations for the in vitro and in vivo testing and application of the two treatment techniques. These recommendations were developed by the members of Working Group 3 of COST Action TD 1402: Multifunctional Nanoparticles for Magnetic Hyperthermia and Indirect Radiation Therapy (“Radiomag”). The purpose of the recommendations is not to provide definitive answers and directions but, rather, to outline those tests and considerations that a researcher must address in order to perform in vitro and in vivo studies. The recommendations are divided into 5 parts: (a) in vitro evaluation of MNPs; (b) in vitro evaluation of MNP-cell interactions; (c) in vivo evaluation of the MNPs; (d) MH combined with RT; and (e) pharmacokinetic studies of MNPs. Synthesis and characterization of the MNPs, as well as RT protocols, are beyond the scope of this wor

DIGITAL TRAINING: TOWARDS A MULTIMODAL AND DIGITAL APPROACH TO CO-CONSTRUCTING LEARNING ENVIRONMENTS

In the digital age, the socio-professional world is undergoing a transition period to move towards the development of digital skills of citizens, in order to reset education and training throughout life while respecting the personal rhythm of each participant. Under this aspect, it will be of prime interest to boost perceptions of cognitive and affective nature to release the creative potential of people in training. the implementation of innovative teaching methods focused on the good supervision and reciprocal online collaboration of trainees will allow them to invest effectively in the education and training process. Therefore, trainees will demonstrate digital abilities and transversal skills through the adoption of pedagogical strategies without neglecting the mastery of sophisticated digital tools, in order to react to the impasses of socio-professional life and to face the new challenges of the society of the future

Influence of pulsed electromagnetic field as a pre-sowing treatment on germination, plant growth and yield of broad beans

Magnetic field is a variable abiotic factor, like temperature, air, soil and water that interacts with the living organisms. The use of different types of magnetic field at many different plant species is increasing and the results are promising. A two-year field experiment was established following a completely randomized design, to investigate the effect of pre-sowing magnetic field treatment for 0, 15, 30 and 45 min on three broad bean varieties. The obtained results showed that the treatment of seeds with pulsed electromagnetic field increased germination percentage, chlorophyll content, leaf area, photosynthetic rate, transpiration rate, stomatal conductance and dry weight. In general, the exposure of seeds for 15 min, gave the highest values compared to the control treatments for the three varieties used. A very interesting result is the fact that although there was an influence of the exposure of magnetic field on the dry weight of the plants, there was not a positive or a negative influence on the seed yield for both years. This means that magnetic field enhanced the vegetative development of the broad beans, but it had no effect on the reproductive development. The results indicate that magnetic field can be used in the cases that the productive direction of the cultivation of broad beans is for livestock forage and silage, as the pre-sowing treatment of seeds had a positive effect on plant dry weight. *** In press - Online First. Article has been peer reviewed, accepted for publication and published online without pagination. The article is to be paginated when the complete issue will be ready for publishing (Volume 48, Issue 3, 2020). The article is searchable and citable by Digital Object Identifier (DOI). DOI link will become active after the article will be included in the complete issue

The effect of nitrogen fertilization on root characteristics of Camelina sativa L. in greenhouse pots

Climate change has made mandatory the introduction of new crops in Greece, such as the cultivation of camelina [Camelina sativa (L.) Crantz]. Nitrogen (N) and the development of root system are two important factors affecting crop growth and yield. Camelina has been studied mainly for its composition and oil. In the present study, root development of camelina crop was thoroughly investigated; mainly in terms of Nitrogen fertilization. Therefore, a camelina greenhouse experiment was established in Western Greece, in the region of Agrinio, in March 2019 in completely randomized design with four treatments, (control 0 ppm N, 30 ppm N, 60, ppm N and 90 ppm N). The N rates had statistically significant affected root density and root surface from 40 to 120 days after treatment (DAT) with highest values at 100 DAT and 90 ppm N, 52.54 cm of root 100 cm-3 and 27.59 cm2 of root 100 cm-3 , respectively. The root volume was significantly affected by N fertilizer from 40 to 100 DAT and highest value was 13.18 cm3 of root 100 cm-3 soil in the 90 ppm at 120 DAT. The plant leaf area was significantly affected by the highest rate of N. Yield per plant had not statistically significant difference with the 60 and with the 90 and highest weight per plant 292.25 g plant-1 in 90 ppm. In conclusion, Ν fertilization significantly affected growth or camelina’s root system after 40 DAT. Plant growth was significantly affected by fertilization and the highest yield and 1,000 seed weight were recorded with the highest amount of N