Mediação parental do uso de tecnologias digitais por crianças com menos de dois anos em diversos contextos culturais

Na sociedade atual, desde que nascem as crianças são inseridas num mundo dominado por meios digitais. Crescem em ambientes ricos em média e apropriam-se das novas tecnologias ainda nos primeiros anos de vida. Televisão, smartphones, tablets, consolas de jogos, computadores são alguns dos recursos digitais que permeiam o seu quotidiano. Os pais são vistos como os principais mediadores relativamente ao contacto das crianças destas idades com meios digitais, tendo também um papel relevante no seu desenvolvimento e bem-estar. No entanto, pouco se sabe sobre o desenvolvimento de hábitos digitais pelas crianças muito novas e como é que os pais e o ambiente familiar influenciam esse processo. O presente estudo faz uma tentativa de preencher essa lacuna realizando uma pesquisa empírica com quatro famílias de crianças até dois anos de idade, distintas nos seus aspetos culturais (naturalidade, religião, classe social, educação e profissão) e com residência em Portugal. O objetivo é analisar se e como a interação das crianças com tecnologias digitais nos primeiros dois anos de vida é moldada pelos modos como os pais geram acesso aos meios digitais e pelos diferentes contextos culturais dessas famílias. As conclusões do estudo indicam que o uso dos média digitais se tornou um comportamento normativo entre crianças muito pequenas, e enfatizam o quanto as novas tecnologias estão integradas nas práticas parentais e modos como estão condicionadas pelo ambiente cultural das famílias.In today's society, children are born into a world dominated by digital media. They are growing up in media rich environments and appropriating new technologies even in their early years of life. Television, smartphones, tablets, game consoles, computers are some of the digital resources that permeate their everyday life. In this context, parents are seen as main mediators regarding children’s contact with digital media, having a relevant role in their development and well-being. However, little is known about the development of digital habits by very young children and how parents and the family environment influence this process. The present study makes an attempt to fill this gap by conducting an empirical research with four families of children up to two years of age. The four families, all living in Portugal, are different in their sociocultural aspects: place where they were born, religion, social class, education and occupation. The aim of the study is to analyze whether and how the interaction of children with digital technologies in the first two years of life is shaped by the ways parents provide their access to digital media and by the different cultural contexts of these families. The findings indicate that the use of digital media has become a normative behavior among very young children, and emphasize how new technologies are integrated into parental practices and conditioned by the cultural environment of families

The Influence of Terroir on Phenolic Composition of Red Grapes

A rich content of phenolic compounds (anthocyans and tannins) is a fundamental technological condition for the obtaining of quality red wines - appreciated by increasing numbers of consumers, aware of the benefic health effects brought about by these biologically active compounds. The biosynthesis of phenols and their accumulation in the grape berries during ripening is influenced by a multitude of factors. In this study we focused on terroir and on the biological potential of the authorized red varieties for wines with controlled denomination of origin in four centres of three well-established viticultural regions: the Hills of Dobrogea, the Hills of Moldova, the Hills of Muntenia and Oltenia. The polyphenolic potential of the grapes was evaluated for the crop of 2015 by the standard Glories method, thus obtaining results for the total polyphenolic potential (ApH1), the extractable anthocyans potential (ApH3,2), the percentage of anthocyans extractability (%AE), the maturity of the seeds (MS) and total polyphenols (PT). By classifying the freshly harvested grapes on the basis of their phenolic potential using the statistical method of Principal Component Analysis, the studied varieties are clearly differentiated based on the viticultural terro

Tehnologie controlată de obţinere a vinului aromat de calitate din soiul Muscat Ottonel la SCDVV Bujoru

To implement the control technology it was used the technology developed infrastructure segment, namely: the harvesting of grapes in plastic crates, the transportation of grapes using the laboratory equipment, the electronic quantitative and qualitative evaluation to determining the sugar content and total acidity; the sorting and selection of grapes; the removing of grapes from cluster and the crushing of grapes with a mini smashing instrument made of stainless steel; the maceration before the fermentation made in small capacity pneumatic press for 12 hours; the controlled fermentation with specific enzymes in 500 L tanks with controlled-temperature cooling jackets. The must (unfermented wine) was obtained by stopping the fermentation process when the desired alcohol content was achieved, preserving a certain quantity of sugar specific for this type of wine. For the current research for producing this aromatic wine with this type of flavour, enzymatic extracted flavours from the grapes were used in the before fermentation stage during the cold maceration. The alcoholic fermentation was carried out in the presence of selected yeasts and nutrients with a complex composition

Qualitative Assessment of the Red Wine Varieties Grown in Dealu Bujorului Vineyard

Wine is considered to be a hydro alcoholic solution with more than 1000 components associated in an extremely complex manner, some of them can pass from grapes in an unchanged state, and some are formed during alcoholic and malolactic fermentation, while others appear due to the reactions between substances in their natural state, or based on the existing ones. The presence of phenolic substances in wine is essential, representing a major contribution in the forming of specific characteristics such as: colour, aroma and taste, thus allowing the distinction between different types of wine. The main purpose of this research is to evaluate the physicochemical composition of the three acknowledged varieties of young wine from the Dealu Bujorului vineyard (‘Merlot’, ‘Cabernet Sauvignon’ and ‘‘Fetească Neagră’’), obtained under the culture conditions of 2012 - 2013 - 2014 years. The oenological parameters were determined after the national STAS regulations and effectively OIV methods. Statistical methods were employed in order to assess the organic and inorganic potential of wine. The ecoclimatic conditions studied in the Dealu Bujorului, Bujoru Wine Centre, highlighted the exceptional viticultural character of Romania as well as the authenticity character encountered in the large variety of wines produced in this area. Results also show that the vine varieties of cultivated in the Vineyard of Dealu Bujorului have a high content of macroelements (‘Merlot’ (890.01 ± 6.35 mg/L (2013)), ‘Cabernet Sauvignon’ (111.36 ± 3.53 mg/L (2013)) and Feteasca neagră (97.30 ± 0.46 mg/L (2014)) that are very important for human’s health. Wine quality parameters analyzed shows that are influenced by the area of culture of vine but also they are influenced by the technology of winemaking

Preliminary researches regarding the conservation of endangered local cattle to be abandoned and the achieving of meat hybrids throughout the hybridization with Romanian breeds

Studies were performed on first generation meat hybrids, from the Bălţată cu Negru Românească (BNR) dairy cattle, into four experimental groups of five animals /group, in relation to meat bulls breeds from which the frozen semen material used for cows artificial insemination, respectively: Group E1- Limousine (Li), E2 - Aberdeen Angus (AA), E3 - Blue Blanch Belgian (BBB) and E4 - Charolaise (CH). The hybrids obtained from the experimental groups were observed in terms of dynamic growth and development through biometric measurements and periodic weightings 3 months intervals until 12 months of age. Average Daily Gain (ADG) recorded different variations in report to age and breed: at six months old, between 418.52 ± 60.97 g (Group E3 -BBB) and 486.67 ± 108.66 g (Group E2 - AA), at 12 months old, between 997.22 g (Group E2 – AA) and 1311.11 g (Group E3 -BBB). Slaughter rate at 12 months showed variations in relation to breed and thermal regime, so in hot regime the values ranged between 56.62 % (BNR x AA) and 60.60 % (BNR x BBB) and in cold regime (to 24 hours) between 55.68 % (BNR x AA) and 59.73 % (BNR x BBB). Carcasses development indicators had values in most cases in favor of BNR x AA hybrids than BNR x BBB hybrids, with significant differences (P ≤ 0.01) regarding the width index (201.43 cm to 175.84 cm) and pulp development index (129.27 cm to 110.64 cm). From results analysis it can be concluded that in dangered local cattle, to be abandoned because of productive reform or not relevant point of view of milk production can be used in first generation for hybridization with meat breeds in obtaining meat hybrids with morphological features, slaughter rate and carcass structure from superior quality categories than the maternal breed

Electrochemical nanostructuring of (111) oriented GaAs crystals: From porous structures to nanowires

A comparative study of the anodization processes occurring at the GaAs(111)A and GaAs(111)B surfaces exposed to electrochemical etching in neutral NaCl and acidic HNO3 aqueous electrolytes is performed in galvanostatic and potentiostatic anodization modes. Anodization in NaCl electrolytes was found to result in the formation of porous structures with porosity controlled either by current under the galvanostatic anodization, or by the potential under the potentiostatic anodization. Possibilities to produce multilayer porous structures are demonstrated. At the same time, one-step anodization in a HNO3 electrolyte is shown to lead to the formation of GaAs triangular shape nanowires with high aspect ratio (400 nm in diameter and 100 μm in length). The new data are compared to those previously obtained through anodizing GaAs(100) wafers in alkaline KOH electrolyte. An IR photodetector based on the GaAs nanowires is demonstrated. © 2020 Monaico et al

Determinarea biomasei levuriene în bioreactor

In the bioreactor, optimal growth and multiplication conditions were created by applying growth and aeration factors, reaching a multiplication rate of 32x106 cells/mLin the bioreactor versus 12x106 cells/mLat the control.The amount of yeast biomass obtained in the bioreactor was 78,6% higher than in the control by the aerobic stimulation effect of the synthesis of cellular precursors of biomass multiplication. In the bioreactor, the conditions of respiratory multiplication of the yeast have been established, as evidenced by the reduced alcohol content of 7.5% alcohol and the large amount of biosynthesis obtained by biosynthesis compared to the control where the fermentative processes are at the expense of the respiratory

The Role of the Oral Microbiota Related to Periodontal Diseases in Anxiety, Mood and Trauma- and Stress-Related Disorders

The prevalence of anxiety, mood and trauma- and stress-related disorders are on the rise; however, efforts to develop new and effective treatment strategies have had limited success. To identify novel therapeutic targets, a comprehensive understanding of the disease etiology is needed, especially in the context of the holobiont, i.e., the superorganism consisting of a human and its microbiotas. Much emphasis has been placed on the role of the gut microbiota in the development, exacerbation, and persistence of psychiatric disorders; however, data for the oral microbiota are limited. The oral cavity houses the second most diverse microbial community in the body, with over 700 bacterial species that colonize the soft and hard tissues. Periodontal diseases encompass a group of infectious and inflammatory diseases that affect the periodontium. Among them, periodontitis is defined as a chronic, multi-bacterial infection that elicits low-grade systemic inflammation via the release of pro-inflammatory cytokines, as well as local invasion and long-distance translocation of periodontal pathogens. Periodontitis can also induce or exacerbate other chronic systemic inflammatory diseases such as atherosclerosis and diabetes and can lead to adverse pregnancy outcomes. Recently, periodontal pathogens have been implicated in the etiology and pathophysiology of neuropsychiatric disorders (such as depression and schizophrenia), especially as dysregulation of the immune system also plays an integral role in the etiology and pathophysiology of these disorders. This review will discuss the role of the oral microbiota associated with periodontal diseases in anxiety, mood and trauma- and stress-related disorders. Epidemiological data of periodontal diseases in individuals with these disorders will be presented, followed by a discussion of the microbiological and immunological links between the oral microbiota and the central nervous system. Pre-clinical and clinical findings on the oral microbiota related to periodontal diseases in anxiety, mood and trauma- and stress-related phenotypes will be reviewed, followed by a discussion on the bi-directionality of the oral-brain axis. Lastly, we will focus on the oral microbiota associated with periodontal diseases as a target for future therapeutic interventions to alleviate symptoms of these debilitating psychiatric disorders. &nbsp;</p