Dynamic Aspects of of Children's Health, Intellectual Development, and Family Economic Status

This paper is an empirical investigation of childhood and adolescent health and cognitive development as determined by family economic variables. The model proposed recognizes that these processes may be jointly dependent, and may in part be determined by common unobserved factors; these factors may also be correlated with the observed family economic variables. A two-factor model is estimated using panel data, and the results indicate that when such factors are taken account of, family income is estimated to have no significant influence on health and cognitive development, but parents' education a strong positive influence.

Paleoregolith and Unconformity-type Uranium Mineralization, Beaverlodge Lake, Great Bear Magmatic Zone, Northwest Territories

During the Paleoproterozoic Era (ca. 2.5 Ga to 1.6 Ga), Earth underwent dramatic changes to its tectonic and atmospheric parameters. These changes included: the formation and breakup of the supercontinent Nuna (Columbia) and the gradual rise in atmospheric oxygen levels. The gradual rise in atmospheric oxygen, referred to as the Great Oxidation Event (GOE), altered the behaviour of silicate mineral weathering, and permitted the formation of new types of economic uranium deposits. Beaverlodge Lake, Northwest Territories (NT), allows for the study of a weathering profile and uranium mineralization post GOE. At Beaverlodge Lake, NT, a regolith is preserved in a rhyodacitic porphyry of the ca. 1.93 Ga Hottah plutonic complex, which is unconformably overlain by the ca. 1.9 Ga quartz arenite of the Conjuror Bay Formation. Coincident with the unconformity is a past-producing uranium deposit (called the Tatie U deposit), which was mined out in the 1930s. Other uranium showings have been discovered at Beaverlodge Lake including the Bee showing. The initial purpose of this project was to examine the regolith through field, petrography, electron microprobe analysis (EMPA), whole-rock geochemistry, and mass balance calculations. The weathering profile shows an increase in Al2O3, Fe2O3T, K2O, P2O5, Ba, and Rb, a loss in SiO2, Na2O, MgO, and Sr, and constant and low abundance of CaO. Titanium remains constant in the weathering profile. Rare earth element (REE) analysis reveals remobilization of light REE (LREE) on a micrometer scale, but no cerium anomaly is preserved in the weathering profile. The weathering profile displays characteristics similar to other post GOE paleoweathering profiles developed on felsic parental material. The timing of uranium mineralization at Tatie and Bee was constrained by in-situ U-Pb uraninite dating by Secondary Ion Mass Spectrometer (SIMS), which yielded two variably discordant ages of 1370.2 ± 7.9 Ma and 407 ± 21 Ma. In addition, REE contents of uraninite were determined by in-situ Laser Ablation Inductively Coupled Plasma Mass Spectrometry (LA-ICP-MS). Results revealed two types of uraninite mineralization are preserved at Beaverlodge Lake and they consist of synmetamorphic at Bee and basement-hosted unconformity-type at Tatie similar to those in the Athabasca Basin. The ca. 1370 Ma uraninite (Tatie) is characterized by an asymmetric bell-shaped REE pattern centered on Tb to Er where LREEs are depleted compared to heavy REEs (HREE). The ca. 407 Ma uraninite at Bee has low La concentrations and a flat to slightly negative REE pattern. The Mesoproterozoic age is similar to a Pb loss age of ca. 1400 Ma found in the Athabasca Basin. The younger Devonian age may be related to meteoric fluids cycling and uranium remobilization during the Phanerozoic

An Exploration of the Dynamic Relationship between Health and Cognitive Development in Adolescence

This paper is an empirical exploration of the dynamic relationship between health and cognitive development in a longitudinal data set compiled from two nationally representative cross-sections of children. Our results indicate that there is feedback both from health to cognitive development and from cognitive development to health, but the latter of these relationships is stronger. They also indicate that estimates of family background effects taken from the dynamic model -- which can be assumed to be less influenced by genetic factors are smaller than their cross-sectional counterparts, but some still remain statistically significant. The first finding calls attention to the existence of a continuing inter-action between health and cognitive development over the life cycle. The second finding suggests that nurture "matters" in cognitive development and health outcomes.

Stability estimates in nonlinear differential equations of a special kind

Quite a lot of works have been devoted to problems of stability theory and, in particular, to the use of the second Lyapunov method for this. The main ones are the following [1-7]. The main attention in these works is paid to obtaining stability conditions. At the same time, when solving practical problems, it is important to obtain quantitative characteristics of the convergence of solutions to an equilibrium position. In this paper, we consider nonlinear scalar differential equations with nonlinearity of a special form (weakly nonlinear equations). Differential equations of this type are encountered in the study of processes in neurodynamics [8,9]. In this paper, we obtain stability conditions for a stationary solution of scalar equations of this type. And also the characteristics of the convergence of the process are calculated. It is shown that the solution of stability problems is closely related to optimization problems [10-12]. Pages of the article in the issue: 67 - 71 Language of the article: Ukrainia

Dermatoglyphic method in medicine

The problem of fingerprints has been interesting for people since ancient times. We’ll try to shed a little light on the given point by means of our research. Dermatoglyphic method has wide application in many spheres of practical medicine because it helps to diagnose genetic pathologies (for example, Down and Turner syndromes can be easily diagnosed by measuring of ATD angle) and to define the genetic predisposition to multiple- factor diseases (such as hypertension, stomach ulcer and many others) in a few minutes. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/1349

Dermatoglyphic method in medicine

The problem of fingerprints has been interesting for people since ancient times. We’ll try to shed a little light on the given point by means of our research. Dermatoglyphic method has wide application in many spheres of practical medicine because it helps to diagnose genetic pathologies (for example, Down and Turner syndromes can be easily diagnosed by measuring of ATD angle) and to define the genetic predisposition to multiple- factor diseases (such as hypertension, stomach ulcer and many others) in a few minutes. When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/1349

БЕЗОПАСНОСТЬ СМЕШАННОГО ИСКУССТВЕННОГО ПИТАНИЯ У ПОСТРАДАВШИХ С ТЯЖЕЛОЙ СОЧЕТАННОЙ ЧЕРЕПНО- МОЗГОВОЙ ТРАВМОЙ

ABSTRACT. Early initiation of artificial nutrition is one of the important components of intensive care for those affected with SMCT. The priority is given to enteral nutrition (EN). Parenteral nutrition (PN) is indicated in order to cover estimated needs in various substrates when EN cannot be performed or is inadequate. However, it must be taken into account that in addition to positive effects, PN may be followed by a number of complications: hyperglycemia, hypertriglyceridemia, impaired pulmonary function, increased thrombogenesis..PURPOSE OF THE STUDY. To assess the safety of PN, used as a component of mixed artificial nutrition in victims with SMCT.MATERIAL AND METHODS. Twenty patients with SMCT, conscious state up to GCS 6-13 and severity of the condition ISS 30-55 upon admission were examined. The age of victims was 40.2±13.1 years, the ratio of men/women was 17/3. All the victims had the diagnosis of brain contusion. In 9 patients, acute subdural hematomas were revealed. They underwent decompressive craniotomy and hematoma removal. The energy consumption was calculated using the Harris-Benedict equation with correction coefficients and indirect calorimetry (IC) method. IC was performed 24 hours a day also calculating respiratory coefficient. Nitrogen balance was studied to assess the severity of hypercatabolism. Enteral nutrition was initiated in all victims starting from day 2 after the injury. In connection with the impossibility of complete compensation of protein-energy requirements by EN, on day 8.8±1.3, PN was added. A three-component mixture of Nutriflex Lipid 70/180 (B. Braun, Germany), 625 ml was used. The concentration of triglycerides (TG) and glucose in venous blood plasma was assessed daily, as well as the ratio of oxygen tension in the arterial blood to the oxygen fraction in the inhaled mixture (PaO2 /FiO2 ).RESULTS. All patients had hypercatabolism prior to initiation of mixed artificial nutrition, and its severity lowered when mixed artificial nutrition was initiated (on day 3 of artificial nutrition in 11 patients, on day 5 in 3 patients and by day 7 in 6 patients). The introduction of PN “three in one” mixture was accompanied by a slight increase in the concentration of TG 2 hours after the start of the infusion and did not affect the dynamics of pulmonary gas exchange. The introduction of PN was accompanied by the development of hyperglycemia. The increase of glucose in venous blood serum was noted 2 and 12 hours after the onset of PN.CONCLUSION. Mixed artificial nutrition in patients with severe multisystem craniocerebral trauma does not lead to the development of hypertriglyceridemia and violation of pulmonary gas exchange and allows to achieve nutritional therapy goals.РЕЗЮМЕ. Одним из важных компонентов интенсивной терапии пострадавших с сочетанной черепно-мозговой травмой (СЧМТ) является раннее начало искусственного питания (ИП). Приоритетным является энтеральное питание (ЭП). Парентеральное питание (ПП) показано при невозможности или недостаточности ЭП для покрытия расчетных потребностей в различных субстратах. Однако необходимо учитывать, что помимо положительных эффектов, проведение ПП может сопровождаться рядом осложнений: гипергликемией, гипертриглицеридемией, нарушением легочной функции, усилением тромбообразования.ЦЕЛЬ. Оценить безопасность ПП, применяемого в составе смешанного ИП, у пострадавших с СЧМТ.МАТЕРИАЛ И МЕТОДЫ. Обследованы 20 пострадавших с СЧМТ с угнетением уровня бодрствования до 6–13 баллов по шкале комы Глазго и тяжестью состояния по шкале тяжести сочетанной травмы ISS 30–55 баллов при поступлении в стационар. Возраст пострадавших составил 40,2±13,1 года, отношение мужчины/женщины — 17/3. У всех пострадавших был установлен диагноз ушиба головного мозга. У 9 больных выявлены острые субдуральные гематомы, в связи с чем им были выполнены декомпрессивная краниотомия и удаление гематом. Расчет энергопотребности проводили при помощи уравнения Харриса–Бенедикта с поправочными коэффициентами и методом непрямой калориметрии (НК). НК осуществляли круглосуточно с определением дыхательного коэффициента. Для оценки выраженности гиперкатаболизма исследовали азотистый баланс. Всем пострадавшим со 2-х сут после получения травмы начинали ЭП. В связи с невозможностью полной компенсации белково-энергетических потребностей при помощи ЭП на 8,8±1,3 сут было добавлено ПП. Для ПП использовали инфузию трехкомпонентной смеси Нутрифлекс Липид 70/180 (В.Braun, Германия), объемом 625 мл (1 раз в сут). Ежедневно определяли концентрацию триглицеридов (ТГ) и глюкозы в плазме венозной крови, а также отношение напряжения кислорода в артериальной крови к фракции кислорода во вдыхаемой смеси (PaO2 /FiO2).РЕЗУЛЬТАТЫ. У всех пациентов до начала проведения смешанного ИП отмечали наличие гиперкатаболизма, выраженность которого на фоне проведения смешанного ИП снижалась: у 11 пострадавших с 3-х сут от его начала, у 3 пострадавших — с 5-х сут, а у 6 — к 7-м сут после его начала. Введение ПП «три в одном» сопровождалось незначительным увеличением концентрации ТГ через 2 ч после начала инфузии и не оказывало влияния на динамику состояния легочного газообмена. Введение ПП сопровождалось развитием гипергликемии. Повышение уровня глюкозы в сыворотке венозной крови отмечали через 2 ч и через 12 ч после начала ПП.ЗАКЛЮЧЕНИЕ. Проведение смешанного ИП пострадавшим с тяжелой СЧМТ не приводит к развитию гипертриглицеридемии и нарушению легочного газообмена и позволяет достичь целей нутритивной терапии

Nurses' perceptions of aids and obstacles to the provision of optimal end of life care in ICU

Contains fulltext : 172380.pdf (publisher's version ) (Open Access