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Copyright of Revista Brasileira de Engenharia Agricola e Ambiental - Agriambi is the property of Revista Brasileira de Engenharia Agricola e Ambiental and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Objective: To identify the scientific evidence on the impacts caused by the use of screens during the COVID-19 pandemic in children and adolescents, raising reflections for future interventions with this public. Data source: This is an integrative literature review, conducted in the databases Medical Literature Analysis and Retrieval System Online (MEDLINE), Literatura Latino-Americana e do Caribe em Ciências da Saúde (LILACS), Cumulative Index to Nursing and Allied Health Literature (CINAHL), United States National Library of Medicine (PubMed), Scopus, Web of Science, and Embase, published from March 2020 to January 2022, in Portuguese, English and Spanish. Data synthesis: The search strategies allowed retrieving 418 articles, of which 218 were duplicates. The analysis of titles and abstracts resulted in the maintenance of 62 studies. Of these, 31 were excluded from the reading of the full text, since they did not clearly present the phenomenon investigated. Thirtyone were eligible, resulting in five categories: eye consequences; increased sedentary behavior and weight; change in eating habits; implications for sleep quality and impacts on mental health. Conclusions: The excessive use of screens during the pandemic led to numerous consequences for children and adolescents, with a higher incidence of visual damage, sedentary lifestyle, inadequate eating habit and increased weight gain, in addition to impaired sleep quality and mental health. This study provides subsidy for health professionals to carry out continuing education focused on this theme, and elaborate effective interventions for this public in this transition to the post-pandemic period. [ABSTRACT FROM AUTHOR]

Soluble allelochemicals have generated great interest since they can be used for the biological control of pests, especially of weeds. However, few studies have evaluated the effectiveness of soluble compounds of exudates on germination in relation to exposure time. Here we evaluate the inhibitory effect of aqueous root, stem and leaf extracts of five South American species of Bothriochloa on the percentage of seed germination of four target species (lettuce, lovegrass, maize and wintergreen paspalum) over three exposure periods (48, 120 and 168 h). Aqueous extracts of the five Bothriochloa species inhibited germination; germination inhibition was strongly correlated with exposure time, with the longest treatment period (168 h) being the one of greatest inhibitory activity. Inhibitory activity differed among types of aqueous extracts. The suitable management of allelopathy might improve crop productivity and environmental protection through biologically friendly control of weeds. [ABSTRACT FROM AUTHOR]

Copyright of Acta Comportamentalia is the property of Instituto de Psicologia y Educacion de la Universidad Veracruzana and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Revista Ambiente e Água is the property of Revista Ambiente e Agua and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Acta Scientiarum: Technology is the property of Universidade Estadual de Maringa and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Foram investigados os efeitos do gradiente de textura e da posição do estímulo teste com relação à linha do horizonte na percepção de tamanho relativo. Pelo método das escadas duplas, cinquenta voluntários ajustaram o tamanho de uma barra apresentada acima, abaixo ou no nível do horizonte para que fosse percebida do mesmo tamanho que uma barra apresentada no campo visual inferior. Os estímulos foram apresentados por 100ms sobre cinco fundos de tela. O gradiente de perspectiva contribuiu mais para a superestimação de tamanho relativo que o gradiente de compressão. Os tamanhos dos objetos que interceptavam a linha do horizonte foram superestimados. O sistema visual mostrou-se bastante eficaz em extrair informações de profundidade da perspectiva, fazendo-o mesmo em apresentações muito breves.We investigated the effects of texture gradient and the position of test stimulus in relation to the horizon on the perception of relative sizes. By using the staircase method, 50 participants adjusted the size of a bar presented above, below or on the horizon as it could be perceived in the same size of a bar presented in the lower visual field. Stimuli were presented during 100ms on five background conditions. Perspective gradient contributed more to the overestimation of relative sizes than compression gradient. The sizes of the objects which intercepted the horizon line were overestimated. Visual system was very effective in extracting information from perspective depth cues, making it even during very brief exposure.

Increased shelf life is important for increasing the marketing of mandarin fruits (Citrus reticulata Blanco) and thus raise more distant markets. In this line, the present study was to evaluate the best time of exposure to UV-C radiation in postharvest longevity of fruit. We evaluated the exposure times for 5, 10, 15 and 20 minutes, while fruits that were not exposed configuring the control. The fruits were stored under refrigeration at a temperature of 15 ºC and evaluated for 25 days. Every five days were evaluated the fresh weight loss, firmness, soluble solids, titratable acidity, pH, ascorbic acid, maturation rate and respiratory rate. With the exception of pH, other results showed statistical variation in all traits. Exposure times for 15 and 20 minutes showed similar results in all storage times and showed the best average on the post-harvest fruit quality. The UV-C radiation has proved to be a promising technical tool for increasing the life of tangerines, combined with cooling. [ABSTRACT FROM AUTHOR]

Copyright of Revista da Associação Brasileira de Nutrição is the property of Associacao Brasileira de Nutricao and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of ConScientiae Saúde is the property of Nove de Julho University and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Psicologia: Reflexão e Critica is the property of Springer Nature and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The objective of this study was to investigate the effects of microwave radiation on Callosobruchus maculatus (Fabr., 1775) pupae in the cowpea (Vigna unguiculata) cultivars BRS Paraguaçu and BRS Xique-xique. The irradiation was made using a commercial microwave oven with a 2450 MHz frequency, 800 W power output, in low power (30%), with exposure periods to microwave radiation of 0, 60, 90, 120 and 150 seconds. It was observed, for both cultivars, reduction of the number of insects emerged per grain, number of insects emerged per treatment and increase in the egg to adult period, with 60 seconds exposure to microwave radiation. The 90, 120 and 150 seconds exposure periods to microwave radiation were lethal to 100% of the C. maculatus pupae. [ABSTRACT FROM AUTHOR]

The purpose of this study was to determine the range of exposure time to obtain acceptable bitewing radiographic images using conventional (InSight, Kodak) and digital (DenOptix™, Gendex) systems. Thirty sound molars were radiographed by bitewing technique at exposure times ranging from 0.06s to 2.50s. Five dental radiologists evaluated the resulting 340 radiographs, classifying them as (1) unacceptable, (2) acceptable and (3) of good quality. Frequencies were analyzed by Kruskal-Wallis and Wilcoxon tests, and inter-examiner agreement was determined by Cohen's kappa statistics. Radiographs of good diagnostic quality in conventional system were obtained with exposure times ranging from 0.10s to 1.00s while in digital system the time ranged from 0.06s to 1.60s (P<0.05). It was also observed that 75.3% of the digital images and 47.1% of the conventional images were considered of good quality. The digital system with phosphor plates (DenOptix™) produces acceptable interproximal radiographic images in a wider range of exposure time than the conventional system (InSight film). [ABSTRACT FROM AUTHOR]