Modelo matemático para curvas de produção de ovos.

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Estimador da produção de ovos.

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Teachers’ practices mediate the association between teachers’ ideas and children’s perceived participation in early childhood education

Participation is a fundamental right of all children. Its promotion is considered a key investment in children’s well-being, crucial to support high-quality early childhood education (ECE). In this study we aimed to investigate if ECE teachers’ ideas on children’s participation were associated with children’s perceived participation, analysing the mediating role of teachers’ practices and dimensions of process quality. Participants in this quantitative study were 336 children (163 boys) aged between 44 and 84 months, and 58 ECE teachers (all female) aged between 26 and 60 years old, from 24 randomly selected ECE centres in Lisbon metropolitan area. Using multilevel modelling, given the hierarchical structure of data, we found that ECE teachers’ ideas about participation do influence children’s perceived participation, through teachers’ perceived practices. Further, ECE teachers’ perceived participation practices were associated with children’s perceived participation, through observed participation practices and observed process quality. This study suggests the interdependence of the subjective and objective properties of ECE classrooms, and how both should inform our understanding of the conditions needed to promote children’s participation.info:eu-repo/semantics/publishedVersio

O que está por baixo dos nossos pés

En este trabajo se pretende demostrar cómo el estudio del comportamiento de las ondas sísmicas llevó a la construcción del modelo físico de la estructura interna de la Tierra en diferentes capas concéntricas. Los modelos analógicos en educación de la ciencias son instrumentos esenciales que hacen los conocimientos científicos más comprensible, facilitando la comprensión de conceptos abstractos y favoreciendo así el interés de los estudiantes

Fontes alternativas de fósforo no desempenho e características dos ossos de suínos em crescimento e terminação.

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Composição química e valores de digestibilidade dos ingredientes nacionais, utilizados em rações de suínos.

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Green Fractionation Approaches for the Integrated Upgrade of Corn Cobs

ABSTRACT: Corn cob is an abundant agricultural residue worldwide, with high potential and interesting composition, and its valorization still needs to be studied. Selectively fractionating its structural components (hemicellulose, cellulose, and lignin), value-added products can be produced, eliminating waste. In this work, integrated fractionation approaches were developed and evaluated. First, an organosolv process was optimized (ethanol:water, 50:50, w/w). Then, as a comparative method, alkaline delignification (using NaOH, 1-2%) was also studied. The organosolv process allowed a significant delignification of the material (79% delignification yield) and, at the same time, a liquid phase containing a relevant concentration (14.6 g/L) of xylooligosaccharides (XOS). The resulting solid fraction, rich in cellulose, showed an enzymatic digestibility of 90%. The alkaline process increased the delignification yield to 94%, producing a solid fraction with a cellulose enzymatic digestibility of 83%. The two later techniques were also used in a combined strategy of hydrothermal processing (autohydrolysis) followed by delignification. The first allowed the selective hydrolysis of hemicellulose to produce XOS-rich hydrolysates (26.8 g/L, 67.3 g/100 g initial xylan). The further delignification processes, alkaline or organosolv, led to global delignification yields of 76% and 93%, respectively. The solid residue, enriched in glucan (above 75% for both combined processes), also presented high enzymatic saccharification yields, 89% and 90%, respectively. The fractionation strategies proposed, and the results obtained are very promising, enabling the integrated upgrading of this material into a biorefinery framework.info:eu-repo/semantics/publishedVersio

Evaluation of insecticides for the control of Linepithema Micans (Hymenoptera: Formicidae).

Linepithema micans (Forel) (Hymenoptera: Formicidae) is the main ant species responsible for the spreading of Eurhizococcus brasiliensis (Wille) (Hemiptera: Margarodidae), a soil scale that damages grapevine plants in southern Brazil. The effect of contact and ingestion of insecticides on the control of L. micans was evaluated in a greenhouse using grapevines (Vitis spp.) infested by L. micans. The insecticides thiamethoxam (250, 187.5, and 125 g/ha), Þpronil (4, 5, and 50 ml/ha), and imidacloprid (650 g/ha) were sprayed on the ground, whereas toxic baits containing boric acid (0.5, 1.0, and 1.2%), pyriproxyfen (0.3 and 0.5%), and hydramethylnon (0.5%) were evaluated in different formulations. Hydramethylnon (toxic bait) and thiamethoxam (chemical barrier) were the most efÞcient active ingredients for the control of L. micans

The safety of digital mental health interventions: Systematic review and recommendations

Background: Evidence suggests that digital mental health interventions (DMHIs) for common mental health conditions are effective. However, digital interventions, such as face-to-face therapies, pose risks to patients. A safe intervention is considered one in which the measured benefits outweigh the identified and mitigated risks. Objective: This study aims to review the literature to assess how DMHIs assess safety, what risks are reported, and how they are mitigated in both the research and postmarket phases and building on existing recommendations for assessing, reporting, and mitigating safety in the DMHI and standardizing practice. Methods: PsycINFO, Embase, and MEDLINE databases were searched for studies that addressed the safety of DMHIs. The inclusion criteria were any study that addressed the safety of a clinical DMHI, even if not as a main outcome, in an adult population, and in English. As the outcome data were mainly qualitative in nature, a meta-analysis was not possible, and qualitative analysis was used to collate the results. Quantitative results were synthesized in the form of tables and percentages. To illustrate the use of a single common safety metric across studies, we calculated odds ratios and CIs, wherever possible. Results: Overall, 23 studies were included in this review. Although many of the included studies assessed safety by actively collecting adverse event (AE) data, over one-third (8/23, 35%) did not assess or collect any safety data. The methods and frequency of safety data collection varied widely, and very few studies have performed formal statistical analyses. The main treatment-related reported AE was symptom deterioration. The main method used to mitigate risk was exclusion of high-risk groups. A secondary web-based search found that 6 DMHIs were available for users or patients to use (postmarket phase), all of which used indications and contraindications to mitigate risk, although there was no evidence of ongoing safety review. Conclusions: The findings of this review show the need for a standardized classification of AEs, a standardized method for assessing AEs to statically analyze AE data, and evidence-based practices for mitigating risk in DMHIs, both in the research and postmarket phases. This review produced 7 specific, measurable, and achievable recommendations with the potential to have an immediate impact on the field, which were implemented across ongoing and future research. Improving the quality of DMHI safety data will allow meaningful assessment of the safety of DMHIs and confidence in whether the benefits of a new DMHI outweigh its risks