Evolution of helium triplet transits of close-in gas giants orbiting K-dwarfs

Atmospheric escape in exoplanets has traditionally been observed using hydrogen Lyman-$\alpha$ and H-$\alpha$ transmission spectroscopy, but more recent detections have utilised the metastable helium triplet at 1083$~$nm. Since this feature is accessible from the ground, it offers new possibilities for studying atmospheric escape. Our goal is to understand how the observability of escaping helium evolves during the lifetime of a highly irradiated gas giant. We extend our previous work on 1-D self-consistent hydrodynamic escape from hydrogen-only atmospheres as a function of planetary evolution to the first evolution-focused study of escaping hydrogen-helium atmospheres. Additionally, using these novel models we perform helium triplet transmission spectroscopy. We adapt our previous hydrodynamic escape model to now account for both hydrogen and helium heating and cooling processes and simultaneously solve for the population of helium in the triplet state. To account for the planetary evolution, we utilise evolving predictions of planetary radii for a close-in 0.3$~M_{\rm Jup}$ gas giant and its received stellar flux in X-ray, hard and soft EUV, and mid-UV wavelength bins assuming a K dwarf stellar host. We find that the helium triplet signature diminishes with evolution. Our models suggest that young ($\lesssim 150$~Myr), close-in gas giants ($\sim 1$ to $2~R_{\rm Jup}$) should produce helium 1083$~$nm transit absorptions of $\sim 4\%$ or $\sim 7\%$, for a slow or fast-rotating K dwarf, respectively, assuming a 2$\%$ helium abundance.Comment: 20 pages, 13 figures, 4 tables; accepted for publication in MNRA

PETROGRAPHIC ANALYSIS AND PROVENANCE OF PEDREIRA SANDSTONE, NEOJURASSIC OF THE PARANÁ BASIN, SOUTHERN BRAZIL

Na região sudeste da Bacia do Paraná, ocorre uma unidade informalmente denominada de Arenito Pedreira. Para definir as relações estra­tigráficas e caracterizar esta unidade foram avaliados dois furos de sondagem e selecionadas amostras representativas para análise petrográfica e contagem modal dos constituintes para definição da proveniência. O Arenito Pedreira está depositado entre a Formação Botucatu, por desconformidade sobreposta, e a Formação Rio do Rastro, com a qual tem contato erosivo. A unidade é composta por uma sucessão de ciclos granodecrescentes constituídos por arenitos conglomeráticos, conglomerados arenosos, arenitos com estratificação cruzada tangencial e cruzada de baixo ângulo, arenitos com marcas de ondas e pelitos laminados, respectivamente. Os arenitos são classificados como arcóseos líticos e arcóseos, tem seleção média, elevados em grãos de feldspatos e quartzo. As feições diagenéticas caracterizam condições de eodiagênese e mesodiagênese, com feições de ambientes de clima continental seco. A análise da proveniência aponta para fontes associadas a arco magmático dissecado. Os litoclastos descritos são semelhantes às rochas encontradas nas unidades do Cinturão Dom Feliciano situadas mais ao sul, no terreno Tijucas e no Batólito Pelotas. Estas informações sugerem uma área fonte próxima e permitem admitir que o soerguimento do Arco de Rio Grande de direção NW-SE, seja responsável pelo fornecimento de sedimentos para a constituição do Arenito PedreiraIn the south-west portion of the Paraná Basin, there is a unit informally called Pedreira Sandstone. In order to define the stratigraphic relations and to characterize this unit, two boreholes were evaluated and representative samples were selected for petrographic analysis and modal counting of the constituents in order to define its provenance. The Pedreira Sandstone was deposited between the Botucatu Formation by overlapped unconformity and the Rio do Rastro Formation, with which it has erosive contact. It is composed of a succession of fining-upward cycles consisting of conglomerate sandstones, sandy conglomerates sandstone packages with tangential cross-bedding and low angle crossbedding, sandstones with ripple marks and laminated pelites respectively. The sandstones are classified as lithic arkoses and arkoses, have a medium selection, with a high ratio of feldspar and quartz grains. The diagenetic features characterize eodiagenesis and mesodiagenesis conditions, with dry continental climate features. The provenance analysis points to sources associated with a dissected magmatic arc and the lithoclasts described are similar to the rocks found in the Dom Feliciano Belt located further south on the Tijucas terranes and Pelotas Batholith. These data suggest a source area near the deposition area and allows accepting that the NW-SE direction uplift of the Rio Grande Arc is responsible for the provision of sediments for the formation of the Pedreira Sandstone

FLUTUAÇÃO POPULACIONAL E ANÁLISE FAUNÍSTICA DE MOSCAS-DASFRUTAS (DIPTERA: TEPHRITIDAE) EM POMARES INSTALADOS NO CAMPUS DO IFC - RIO DO SUL – SC

Dependendo do país, da região, do hospedeiro e da época do ano, a importância econômica das moscas-das-frutas pode variar. Em algumas regiões elas chegam a comprometer 100% da produção de frutos e podem infestar mais de 400 espécies de frutas, sendo considerada uma das principais pragas que afeta a fruticultura em todo o mundo, mesmo em pequenas populações. Assim sendo à presente pesquisa teve como objetivo avaliar a flutuação populacional e faunística de mosca-das-frutas (Díptera: Tephritidae) em pomares instalados no campus do IFC- Rio do Sul – SC. O trabalho foi desenvolvido nos pomares de fruticultura instalados no campus e conduzidos em sistemas de produção agroecológico e/ou convencional, durante o período de novembro de 2017 a abril de 2019. Foram realizadas coletas quinzenais dos frutos maduros ou em início de maturação, armazenados e examinados durante toda semana até a emergência das moscas. O monitoramento dos adultos foi realizado com auxílio de armadilhas plásticas do tipo garrafa pet, contendo 300 mL de melaço de canade-açúcar, diluído a 10% em água, utilizado como atrativo alimentar, mantido por 15 dias e omaterial coletado transferido para frascos contendo álcool 70%. Os exemplares de moscasdas-frutas foram separados por sexo. Os dados obtidos foram utilizados nos estudos da análise faunística visando caracterizar cada uma das comunidades. Os levantamentos de espécies de Anastrepha spp. para estudo das flutuações populacionais foram realizados por meio das espécies coletadas nas armadilhas presentes nas plantas. A flutuação populacional foi baseadano número total de adultos de Anastrepha em relação às variáveis climáticas: temperatura e precipitação pluviométrica. Do total de moscas-das-frutas coletadas todas pertencem à espécie Anastrepha fraterculus. O número de moscas-das-frutas coletadas foi significativo, principalmente, em relação às fêmeas, mostrando a importância e eficiência das armadilhas pet com melaço como atrativo alimentar, a goiaba se destacou por apresentar maior número moscas-das-frutas, segundo a literatura, no Brasil é um dos hospedeiros mais infestados por esta espécie. A disponibilidade de frutos hospedeiros é mais importante na determinação do tamanho das populações das espécies mais abundantes de Anastrepha do que as variáveis meteorológicas. A flutuação populacional de adultos de moscas-das-frutas não obedece a um padrão e isso se deve as variações de toda ordem: épocas (anos, meses), regiões ou locais.

Waist circumference as a mediator of biological maturation effect on the motor coordination in children

AbstractObjectiveThe present study aimed to: 1) examine the association of biological maturation effect on performance at a motor coordination battery and 2) to assess whether the association between biological maturation and scores obtained in motor coordination tests is mediated by some anthropometric measurement.MethodsThe convenience sample consisted of 73 male children aged 8 years old. Anthropometric data considered the height, body mass, sitting height, waist circumference, body mass index, fat mass and fat-free mass estimates. Biological maturation was assessed by the percentage of the predicted mature stature. Motor coordination was tested by the Körperkoordinationstest für Kinder. A partial correlation between anthropometric measurements, z-score of maturation and the motor coordination tests were performed, controlling for chronological age. Finally, causal mediation analysis was performed.ResultsHeight, body mass, waist circumference and fat mass showed a slight to moderate inverse correlation with motor coordination. Biological maturation was significantly associated with the balance test with backward walking (r=−0.34). Total mediation of the waist circumference was identified in the association between biological maturation and balance test with backward walking (77%).ConclusionsWe identified an association between biological maturation and KTK test performance in male children and also verified that there is mediation of waist circumference. It is recommended that studies be carried out with female individuals and at other age ranges

Resumen de la Tarea de Análisis de Sentimientos Basado en Aspectos en Portugués (ABSAPT) en IberLEF 2022

Este artículo presenta la Tarea sobre Análisis de Sentimientos basado en Aspectos en Portugués (ABSAPT), realizada en el IberLEF 2022. Les pedimos a los participantes que desarrollaran sistemas capaces de identificar aspectos (AE) y extraer la polaridad (ASC) en textos escritos en portugués. Doce equipos se inscribieron en la tarea, entre los cuales cinco presentaron predicciones e informes técnicos. El sistema con mejor rendimiento logró un valor de precisión (Acc) de 0,67 para la subtarea de AE (Equipo Deep Learning Brasil) y un valor de precisión equilibrada (Bacc) de 0,82 para la subtarea de ASC (Equipo Deep Learning Brasil).This paper presents the task on Aspect-Based Sentiment Analysis in Portuguese (ABSAPT), held within Iberian Languages Evaluation Forum (IberLEF 2022). We asked the participants to develop systems capable of extracting aspects (AE) and classifying sentiment of aspects (ASC) in texts. We created one corpora containing reviews about hotels. Twelve teams registered to the task, among which five submitted predictions and technical reports. The best performing system achieved an Accuracy (Acc) value of 0.67 in AE sub-task (Team Deep Learning Brasil) and a Balanced Accuracy (Bacc) value of 0.82 in ASC sub-task (Team Deep Learning Brasil).This work was financed in part by the following Brazilian research agencies: CAPES and CNPq

Multivariate relationships among morphology, fitness and motor coordination in prepubertal girls

Motor coordination and physical fitness are multidimensional concepts which cannot be reduced to a single variable. This study evaluated multivariate relationships among morphology, physical fitness and motor coordination in 74 pre-pubertal girls 8.0-8.9 years of age. Data included body dimensions, eight fitness items and four motor coordination tasks (KTK battery). Maturity status was estimated as percentage of predicted mature stature attained at the time of observation. Canonical correlation analysis was used to examine the relationships between multivariate domains. Significant pairs of linear functions between indicators of morphology and fitness (r(c) = 0.778, Wilks' Lambda = 0.175), and between fitness and motor coordination (r(c) = 0.765, Wilks' Lambda = 0.289) were identified. Girls who were lighter and had a lower waist-to-stature ratio and % fat mass attained better scores in the endurance run, sit-ups and standing long jump tests, but poorer performances in hand grip strength and 2-kg ball throw. Better fitness test scores were also associated with better motor coordination scores. Relationships between body size and estimated fatness with motor fitness suggested an inverse relationship that was particularly evident in performance items that required the displacement of the body through space, while motor coordination was more closely related with fitness than with somatic variables

Erythropoietin reduces the expression of myostatin in mdx dystrophic mice

Erythropoietin (EPO) has been well characterized as a renal glycoprotein hormone regulating red blood cell production by inhibiting apoptosis of erythrocyte progenitors in hematopoietic tissues. EPO exerts regulatory effects in cardiac and skeletal muscles. Duchenne muscular dystrophy is a lethal degenerative disorder of skeletal and cardiac muscle. in this study, we tested the possible therapeutic beneficial effect of recombinant EPO (rhEPO) in dystrophic muscles in mdx mice. Total strength was measured using a force transducer coupled to a computer. Gene expression for myostatin, transforming growth factor-beta 1 (TGF-beta 1), and tumor necrosis factor-alpha (TNF-alpha) was determined by quantitative real time polymerase chain reaction. Myostatin expression was significantly decreased in quadriceps from mdx mice treated with rhEPO (rhEPO = 0.60 +/- 0.11, control= 1.07 +/- 0.11). On the other hand, rhEPO had no significant effect on the expression of TGF-beta 1 (rhEPO = 0.95 +/- 0.14, control= 1.05 +/- 0.16) and TNF-alpha (rhEPO = 0.73 +/- 0.20, control= 1.01 +/- 0.09). These results may help to clarify some of the direct actions of EPO on skeletal muscle.Fac Med ABC, BR-09060650 Santo Andre, SP, BrazilUniv São Paulo, Inst Ciencias Biomed, BR-05508 São Paulo, BrazilUniversidade Federal de São Paulo, Inst Ciencias Quim Ambientais & Farmaceut, Diadema, SP, BrazilUniversidade Federal de São Paulo, Inst Ciencias Quim Ambientais & Farmaceut, Diadema, SP, BrazilWeb of Scienc

Agreement between dual x-ray absorptiometers using pencil beam and fan beam: indicators of bone health and whole-body plus appendicular tissue composition in adult athletes

OBJECTIVE: The current study was aimed to examine intra-individual variation on indicators of bone health in addition to whole-body plus appendicular tissue measurements using two concurrent assessments based on pencil beam and fan beam dual energy X-ray absorptiometry (DXA) systems in adult athletes from several sports. METHOD: Thirty-two male participants (27.6±10.1 years) were measured on anthropometry including multifrequency bioelectric impedance and air-displacement plethysmography. Bone mineral content (BMC), bone area, fat and lean soft tissue were derived using pencil beam (Lunar DPX-MD+) and fan beam (Lunar iDXA) absorptiometry. Bone mineral density (BMD) was obtained for the femoral neck, trochanter and triangle of ward. Finally, the right thigh was defined as a region of interest (ROI). Analyses comprised intra-class correlation (ICC), Effect size (d) from mean differences of repeated measurements, coefficient of variation (CV) RESULTS: ICC were >0.900 for all measurements. Intra-individual differences were large for BMC (d=1,312; CV=2,7%), bone area (d=1,761; CV=2,7%), fat tissue (d=1,612; CV=11%) and all indicators of appendicular lean soft tissue (d=1,237-1687; CV=2,0-4,1%). A very large difference (d=4,014; CV=8.4%) was diagnosed for lean soft tissue of the ROI. CONCLUSION: Although differences among concurrent instruments for BMC and bone area, the effect size of mean differences was negligible for BMD. Fat and lean soft tissue derived from DXA should be interpreted as reference values (not criterion) due to equipment-related variation, more apparently in the ROI values.info:eu-repo/semantics/publishedVersio

Periostin as a modulator of chronic cardiac remodeling after myocardial infarction

OBJECTIVE: After acute myocardial infarction, during the cardiac repair phase, periostin is released into the infarct and activates signaling pathways that are essential for the reparative process. However, the role of periostin in chronic cardiac remodeling after myocardial infarction remains to be elucidated. Therefore, the objective of this study was to investigate the relationship between tissue periostin and cardiac variables in the chronic cardiac remodeling induced by myocardial infarction. METHODS: Male Wistar rats were assigned to 2 groups: a simulated surgery group (SHAM; n = 8) and a myocardial infarction group (myocardial infarction; n = 13). After 3 months, morphological, functional and biochemical analyses were performed. The data are expressed as means±SD or medians (including the lower and upper quartiles). RESULTS: Myocardial infarctions induced increased left ventricular diastolic and systolic areas associated with a decreased fractional area change and a posterior wall shortening velocity. With regard to the extracellular matrix variables, the myocardial infarction group presented with higher values of periostin and types I and III collagen and higher interstitial collagen volume fractions and myocardial hydroxyproline concentrations. In addition, periostin was positively correlated with type III collagen levels (r = 0.673, p = 0.029) and diastolic (r = 0.678, p = 0.036) and systolic (r = 0.795, p = 0.006) left ventricular areas. Considering the relationship between periostin and the cardiac function variables, periostin was inversely correlated with both the fractional area change (r = -0.783, p = 0.008) and the posterior wall shortening velocity (r = -0.767, p = 0.012). CONCLUSIONS: Periostin might be a modulator of deleterious cardiac remodeling in the chronic phase after myocardial infarction in rats

Biocultural predictors of motor coordination among pre-pubertal boys and girls

This study aimed to predict motor coordination from a matrix of biocultural factors for 173 children (89 boys, 84 girls) aged 7-9 years who were assessed with the Körperkoordinationtest für Kinder test battery. Socioeconomic variables included built environment, area of residence, mother\u27s educational level, and mother\u27s physical activity level (using the International Physical Activity Questionnaire [short version]). The behavioral domain was marked by participation in organized sports and habitual physical activity measured by accelerometers (ActiGraph GT1M). Indicators of biological development included somatic maturation and body mass index. Among males, the best logistic regression model to explain motor coordination (Nagelkerke R 2 = 50.8; χ 2 = 41.166; p \u3c .001) emerged from age-group (odds ratio [OR]: 0.007-0.065), late maturation (OR = 0.174), normal body weight status (OR = 0.116), mother\u27s educational level (OR = 0.129), and urban area of residence (OR = 0.236). Among girls, the best logistic regression to explain motor coordination (Nagelkerke R 2 = 40.8; χ 2 = 29.933; p \u3c .01) derived from age (OR: 0.091-0.384), normal body mass index (OR = 0.142), participation in organized sport (OR = 0.121), and mother\u27s physical activity level (OR = 0.183). This sex-specific, ecological approach to motor coordination proficiency may help promote physical activity during prepubertal years through familiar determinants