Non-LTE line formation for Pr II and Pr III in A and Ap stars

Non-LTE line formation for Pr II and Pr III is considered through a range of effective temperatures between 7250 K and 9500 K. A comprehensive model atom for Pr II/III is based on the measured and the predicted energy levels, in total, 6708 levels of Pr II and Pr III. We describe calculations of the Pr II energy levels and oscillator strengths for the transitions in Pr II and Pr III. The influence of departures from LTE on Pr abundance determinations is evaluated. At Teff >= 8000 K departures from LTE lead to overionization of Pr II and to systematically depleted total absorption in the line and positive abundance corrections. At the lower temperatures, different lines of Pr II may be either weakened or amplified depending on the line strength. The non-LTE effects strengthen the Pr III lines and lead to negative abundance corrections. Non-LTE corrections grow with effective temperature for the Pr II lines, and, in contrast, they decline for the Pr III lines. The Pr II/III model atom is applied to determine the Pr abundance in the atmosphere of the roAp star HD 24712 from the lines of two ionization stages. In the chemically uniform atmosphere with [Pr/H] = 3, the departures from LTE may explain only small part (0.3 dex) of the difference between the LTE abundances derived from the Pr II and Pr III lines (2 dex). We find that the lines of both ionization stages are described for the vertical distribution of the praseodymium where the Pr enriched layer with [Pr/H] > 4 exists in the outer atmosphere at log tau_5000 < -4. The departures from LTE for Pr II/III are strong in the stratified atmosphere and have the opposite sign for the Pr II and Pr III lines. Using the revised partition function of Pr II and experimental transition probabilities, we determine the solar non-LTE abundance of Pr as log (Pr/H) = -11.15\pm0.08.Comment: 17 pages, 4 tables, 11 figures, accepted for publication in A&

Realistic model atmosphere and revised abundances of the coolest Ap star HD101065

Among the known Ap stars, HD101065 is probably one of the most interesting objects, demonstrating very rich spectra of rare-earth elements (REE). Strongly peculiar photometric parameters of this star that can not be fully reproduced by any modern theoretical calculations, even those accounting for realistic chemistry of its atmosphere. In this study we investigate a role of missing REE line opacity and construct a self-consistent atmospheric model based on accurate abundance and chemical stratification analysis. We employed the LLmodels stellar model atmosphere code together with DDAFit and SynthMag software packages to derive homogeneous and stratified abundances for 52 chemical elements and to construct a self-consistent model of HD101065 atmosphere. The opacity in REE lines is accounted for in details, by using up-to-date extensive theoretical calculations. We show that REE elements play a key role in the radiative energy balance in the atmosphere of HD101065, leading to the strong suppression of the Balmer jump and energy redistribution very different from that of normal stars. Introducing new line lists of REEs allowed us to reproduce, for the first time, spectral energy distribution of HD101065 and achieve a better agreement between the unusually small observed Str\"omgren c1 index and the model predictions. Using combined photometric and spectroscopic approaches and based on the iterative procedure of abundance and stratification analysis we find effective temperature of HD101065 to be Teff=6400K.Comment: Accepted by A&A, 13 pages (3 of Online Material), 10 figures, 4 table

Criteria for diagnostics of displays of connecting tissue and delay of sexual development in children and adolescents

This work is related to the need for timely interpretation of accumulative dysplastic features, revealed in anamnesis in patents with delayed sexual development requiring surgical intervention. This allows the timely appointment of treatment, reduce or avoid complications. As a result of the conducted studies, it was found out that the history all relatives in the main group was burdenedof (with combinations of connective tissue dysplasia syndromes and delayed sexual development). These were cardiac arrhythmias, the pathology of the musculoskeletal system, characteristic of connective tissue dysplasia with predominance of valvular, thoracodiaphragmatic, arrhythmic syndromes, pathology of the organ of vision, hypermobility syndrome of the joints. In the control group (children and adolescents without dysplastic features), the closest relatives of patients met only the pathology of the organ of vision. In children of the main group, compared with the control of clinical manifestations, hypermobic, articular, valve, arrhythmic, thoracodiaphragmatic, asthenic syndromes, pathology of the organ of vision, feet were more often detected. Increased anxiety was noted. The average total testicle volume is significantly lower in the patients of the main group, and the indicators of the urinalysis test at the CPC are significantly higher than in the control group. In the main group, the sexual development of children and adolescents lagged behind those of the control group. With dysplasia of connective tissue, the following signs of delayed sexual development are revealed: micropeniasis, testicular hypermobility, testicular hypoplasia. In the control group, these symptoms were absent.Данная работа связана с необходимостью своевременной интерпретации накопительных диспластических признаков, выявляемых в анамнезе у пациентов при задержке полового развития, требующих хирургического вмешательства, что позволяет своевременно назначить лечение, уменьшить или избежать осложнений. В результате проведенных исследований выяснено, анамнез всех родственников детей и подростков основной группы (с сочетаниями синдромов дисплазии соединительной ткани и задержки полового развития) был отягощен наррениями ритма сердца, патологией опорно-двигательного аппарата, характерных для дисплазии соединительной ткани с преобладанием клапанного, торакодиафрагмального, аритмического синдромов, патологии органа зрения, синдрома гипермобильности суставов. В контрольной группе (дети и подростки без диспластических признаков) ближайших родственников пациентов встречалась лишь патология органа зрения. Также и у детей основной группы по сравнению с контрольной из клинических проявлений чаще выявлялись гипермобильный, суставной, клапанный, аритмический, торакодиафрагмальный, астенический синдромы, патология органа зрения, стопы; отмечалась повышенная тревожность. Средний суммарный объём яичек достоверно ниже у пациентов основной группы, а показатели теста анализа мочи на ЦПХ достоверно выше, чем у пациентов контрольной группы. В основной группе половое развитие детей и подростков отставало от показателей пациентов контрольной группы. При дисплазии соединительной ткани выявлены следующие признаки задержки полового развития: микропенис, гипермобильность яичек, гипоплазия яичек; в контрольной группе эти признаки отсутствовали

EVALUATION OF PHYSICAL DEVELOPMENT OF NEWBORNS AND CHILDREN OF EARLY AGE

The aim of this review is to present a visual study of the physical development of newborns and children of early age using percentile diagrams, recommended by the experts from the World Health Organization, and the evaluation of anthropometric indices in preterm infants. Graphical curves of body weight, height for age, body mass in accordance with the growth of boys and girls of a young age may be used for the work of pediatricians; graphical curves of weight, length, head circumference and weight-height ratio in preterm infants – neonatologians

Breastfeeding in Udmurtia: Past and Present

The article presents an excursion into the history of breastfeeding by the example of children’s eating patterns in Udmurtia and highlights the current requirements of the World Health Organization for breastfeeding maintenance. The Udmurts’ familial rites supporting a pregnant and lactating woman and the high prevalence of free breastfeeding have contributed to a decrease in infectious morbidity and mortality rates. The physiological type of carrying Udmurt babies has a positive effect on lactation. The current researches indicate that breastfeeding is the ideal diet that has numerous benefits to baby and mother. Therefore, there must be a collective social responsibility for supporting breastfeeding and lactating mothers

ASSESSING PHYSICAL DEVELOPMENT OF CHILDREN WITH PERCENTILE DIAGRAMS

The results of the analysis of methods assessing anthropometric measures in children are presented. A method for visual examination of physical development using author's percentile diagrams for height, body weight, and the harmony of development of children of different age groups is offered. The method can be quickly performed, it is recommended for mass screening examination of children under outpatient treatment. To monitor the health of a specific child, a monitoring assessment of physical development is possible. The analysis of Z-score is of great clinical importance when determining anthropometric measures below the 3rd percentile, for the assessment of premature infants with congenital malformations and other diseases, in the presence of obesity. Graphical curves of body weight, height to age, body weight according to the height of boys and girls can be used by pediatricians

Connective tissue dysplasia-associated cardiac pathology in women and their newborns

Connective tissue dysplasia is the constitutional basis for cardiac pathology in women and their newborn infants. A higher serum free hydroxyproline concentration and a lower free to peptide-bound hydroxyproline ratio in women with congenital heart disease in the presence of connective tissue dysplasia and a similar trend of changes in these markers in their newborns diagnosed with congenital atrial septal defect indicate the slowed metabolism of collagen and its reduced biological recycling rate, which serves as a poor prognostic sign. The mentioned biochemical markers may be used as additional criteria for preclinical diagnosis of fetal and neonatal cardiac diseases, for assessment of their prognosis and for implementation of preventive measures