bluuebunny/crossref_metadata_2025_split huggingface dataset:
Cognitive performance in adolescents with Delayed Sleep‐Wake Phase Disorder: Treatment effects and a comparison with good sleepers
Authors: Richardson C. , Micic G. , Cain N. , Bartel K. , Maddock B. , Gradisar M. 
Published: March 2018

ABSTRACTThe present study aimed to investigate whether Australian adolescents with Delayed Sleep‐Wake Phase Disorder have impaired cognitive performance and whether chronobiological treatment for Delayed Sleep‐Wake Phase Disorder improves adolescents' sleep, daytime functioning and cognitive performance. Adolescents with Delayed Sleep‐Wake Phase Disorder (mean = 15.68 ± 2.1 y, 62% f) reported significantly later sleep timing (d = 1.03–1.45), less total sleep time (d = 0.82) and greater daytime sleepiness (d = 2.66), fatigue (d = 0.63) and impairment (d = 2.41), compared to good sleeping adolescents (mean = 15.9 ± 2.4 y, 75% f). However, there were no significant between‐group differences (all p > 0.05) in performance on the Operation Span (ηp2 = 0.043), Digit Span (forwards: ηp 2 = 0.002, backwards: ηp2 = 0.003), Letter Number Sequencing (ηp2 < 0.001) (working memory) and Digit‐Symbol Substitution Tasks (ηp2 = 0.010) (processing speed). Adolescents with Delayed Sleep‐Wake Phase Disorder went on to receive 3 weeks of light therapy. At 3 months post‐treatment, adolescents with Delayed Sleep‐Wake Phase Disorder reported significantly advanced sleep timing (d = 0.56–0.65), greater total sleep time (d = 0.52) and improved daytime sleepiness (d = 1.33), fatigue (d = 0.84) and impairment (d = 0.78). Performance on the Operation Span (d = 0.46), Letter Number Sequencing (d = 0.45) and Digit‐Symbol Substitution tasks (d = 0.57) also significantly improved.
Early pubertal timing and adult adjustment outcomes: Persistence, attenuation, or accentuation?
Authors: Senia Jennifer M. , Donnellan M. Brent , Neppl Tricia K. 
Published: March 2018

ABSTRACTEarly pubertal timing is associated with internalizing and externalizing problems during adolescence. However, few studies explicitly test whether early puberty is especially problematic for those with pre‐existing problems (i.e., accentuation) and little is known about whether the negative correlates of early pubertal timing persist past young adulthood. We address these questions using longitudinal data from up to 451 participants in the Iowa Youth and Families project (e.g., Ge, Conger, & Elder, 1996, 2001). We replicated and extended previous results reported for this sample during adolescence (e.g., early maturing boys and girls reported more substance use) and found some evidence for accentuation in adolescence for psychological distress and substance use. However, correlations between early puberty and adult outcomes assessed up to two decades later were largely indistinguishable from zero including attenuation effects. These results suggest that any negative correlates of early pubertal timing are attenuated by the fourth decade of life.
The Sine-Gordon regime of the Landau–Lifshitz equation with a strong easy-plane anisotropy
Authors: de Laire André , Gravejat Philippe 
Published: March 2018

It is well-known that the dynamics of biaxial ferromagnets with a strong easy-plane anisotropy is essentially governed by the Sine-Gordon equation. In this paper, we provide a rigorous justification to this observation. More precisely, we show the convergence of the solutions to the Landau–Lifshitz equation for biaxial ferromagnets towards the solutions to the Sine-Gordon equation in the regime of a strong easy-plane anisotropy. Moreover, we establish the sharpness of our convergence result.
This result holds for solutions to the Landau–Lifshitz equation in high order Sobolev spaces. We first provide an alternative proof for local well-posedness in this setting by introducing high order energy quantities with better symmetrization properties. We then derive the convergence from the consistency of the Landau–Lifshitz equation with the Sine-Gordon equation by using well-tailored energy estimates. As a by-product, we also obtain a further derivation of the free wave regime of the Landau–Lifshitz equation.
Brain‐derived neutrophic factor in adolescents smoking waterpipe: The Irbid TRY
Authors: Alomari Mahmoud A. , Al‐sheyab Nihaya A. , Khabour Omar F. , Alzoubi Karem H. 
Published: March 2018

AbstractBackgroundBrain‐derived neutrophic factor (BDNF) and tobacco consumption can affect many body functions and health. However, the relationship of BDNF with waterpipe (Wp) smoking is unknown. Therefore, the current study examined the relationship between Wp smoking and BDNF in adolescents.MethodsSelf‐reported tobacco consumption and serum BDNF were determined in 195 waterpipe and 288 nonsmokers in 7th–10th grade students.ResultsStepwise regression that included Wp smoking, gender, BMI, and location, showed that only Wp smoking (p < 0.0001) and gender (p < 0.0001) were related to serum BDNF. In addition, the ANCOVA found a main effect for Wp smoking (p < 0.0001) and gender (p < 0.0001) with lower BDNF in males smoking waterpipe.DiscussionBDNF was diminished in adolescent Wp smokers, which might predispose adolescents for systematic adverse health and behavioral alterations. These results extend the negative health risks associated with cigarette smoking to that of water‐pipe tobacco smoking.
Diferença na degeneração articular de acordo com o tipo de esporte
Authors: Jorge Pedro Baches , Sprey Jan Willem Cerf , Runco Guilherme Morgado , Lima Marcos Vaz de , Severino Nilson Roberto , Santili Claudio 
Published: March 2018

Resumo
Objetivo Determinar se a degradação de colágeno tipo II é determinada pelo tipo de esporte. O telopeptídeo carboxiterminal do colágeno tipo II (CTX-II), biomarcador de soro de degradação de colágeno, foi medido em atletas de esportes diferentes e comparado aos controles correspondentes.
Métodos A amostra consistiu em 70 participantes do sexo feminino com idade entre 18 a 25 anos, das quais 15 eram membros de uma equipe de futebol, 10 de uma equipe de futebol de salão, 10 de uma equipe de handebol, 18 de uma equipe de voleibol, e 7 de uma equipe de natação. Foram incluídos no grupo de controle 9 indivíduos sedentários, pareados por idade e sexo. Uma amostra de sangue de 3 ml foi coletada de cada participante e analisada usando um ensaio imunossorvente ligado a enzima (ELISA, do inglês enzyme-linked immunosorbent assay).
Resultados Uma comparação das concentrações de CTX-II das praticantes de diferentes esportes em comparação com o grupo de controle apresentou os seguintes valores de p: voleibol (p = 0,21); futebol (p = 0,91); handebol (p = 0,13); futebol de salão (p = 0,02) e natação (p = 0,0015). Portanto, na população investigada, o futebol de salão apresentou o maior risco de degradação do colágeno tipo II, e, consequentemente, de degradação da cartilagem articular, enquanto a prática de natação foi um fator protetor para a cartilagem articular. Não foi observada diferença estatisticamente significativa no índice de massa corporal entre os grupos.
Conclusão As jogadoras de futebol de salão estão expostas a uma maior degradação articular, enquanto as nadadoras apresentam menor degradação da cartilagem em comparação com o grupo de controle na população estudada, o que sugere que o fortalecimento dos músculos periarticulares e o exercício aeróbico em ambientes de baixa carga têm um efeito positivo na cartilagem articular.
Early Proterozoic granitoids of the Olenek complex (northern Siberian craton): petrogenesis and geodynamic setting
Authors: Donskaya T.V. , Gladkochub D.P. , Mazukabzov A.M. 
Published: March 2018

Abstract
The paper deals with geological and geochemical studies of granitoids of the Olenek complex in the Olenek uplift of the basement of the northern Siberian craton. The age of these granitoids was earlier estimated at 2036 ± 11 Ma. The granitoids of the Olenek complex correspond in composition to high-alumina quartz diorites, granites, and leucogranites of the normal petrochemical series. According to geochemical and mineralogical characteristics, the quartz diorites can be assigned to granites of the transitional I–S type, and the granites and leucogranites, to S-type granites. The εNd(T) values in the granites of the Olenek complex vary from −0.2 to + 1.4, and the Nd model age is 2.4–2.5 Ga. The quartz diorite is characterized by εNd(T) = + 3.0 and a Nd model age T(DM) = 2.2 Ga. The geochemical characteristics of the granites and leucogranites indicate their formation through the melting of a source of graywacke composition, whereas the quartz diorites resulted, most likely, from the mixing of granitic and basaltic melts. The fact that the granitoids of the Olenek complex intruded the folded rocks of the Eekit Formation but stay virtually undeformed massive bodies suggests that they formed at the postdeformation stage of the regional evolution after the completion of the Paleoproterozoic orogenic events. The intrusion of granitoids marks the completion of the formation of the Early Proterozoic Eekit fold belt on the western (in the recent coordinates) margin of the Birekta terrane of the Olenek superterraine and the final formation of the superterrane structure. At the next stage of magmatism (1.98–1.96 Ga), best pronounced in the uplifts of the basement of the northern Siberian craton, all terranes forming the Anabar and Olenek superterranes assembled into a single structure.
Au–Cu–Ag mineralization in rodingites and nephritoids of the Agardag ultramafic massif (southern Tuva, Russia)
Authors: Palyanova G.A. , Murzin V.V. , Zhuravkova T.V. , Varlamov D.A. 
Published: March 2018

Abstract
Gold-bearing albite–amphibole–pyroxene rodingites of the Agardag ultramafic massif (southern Tuva, Russia) are confined to the E–W striking serpentinite crush zone. A zone of gold-bearing nephritoids is localized at the contact of rodingites with serpentinites. Optical and scanning electron microscopy, electron probe microanalysis, and fluorescent, chemical, ICP MS, and X-ray phase analyses were applied to study Au–Cu–Ag mineralization in the serpentinites, rodingites, and nephritoids. Copper sulfides, chalcocite and digenite, are present in the serpentinites, whereas gold and silver minerals are absent. Copper impurity is found in antigorite, Cr-spinel, and magnetite (up to 0.1–0.3 wt.%) as well as parkerite (up to 1.2 wt.%) and millerite (up to 7.9 wt.%). A wide variety of native gold and copper minerals has been identified in the rodingites: (1) cuproauride and tetra-auricupride free of or containing silver impurities (0.1 to 1.2 wt.%); (2) electrum of composition Ag0.50–0.49Au0.50–0.51 (650–660‰) intergrown with AuCu, sometimes as exsolution structures; (3) electrum of composition Ag0.70–0.64Au0.30–0.36 (440–510‰), with inclusions of AuCu and copper sulfides (geerite and yarrowite); (4) high-fineness gold (750–990‰) as veinlets in electrum; and (5) native copper. The composition of copper sulfides varies from chalcocite to covellite. Submicron inclusions of hessite Ag2Te were found in chalcocite. The amount of copper, gold, and silver minerals in the nephritoids is much less than that in the rodingites. The nephritoids contain chalcocite, electrum of composition Ag0.64–0.63Au0.36–0.37 (530–540‰), cuproauride, and tetra-auricupride. The detected hypergene minerals are auricuzite, apachite, brochantite, high-fineness gold, native copper, and cuprite. The sequence of mineral formation in the Agardag ore occurrence has been established on the basis of mineral structures and mineral relations in the rodingites and nephritoids. It is proved that Au–Cu–Ag mineralization formed with the participation of Au- and Ag-bearing chloride-free low-sulfur carbon dioxide alkaline fluids in reducing conditions.
Seismic stratigraphy of the Upper Quaternary deposits on the northeastern slope of the Ceará Rise (Central Atlantic)
Authors: Borisov D.G. , Murdmaa I.O. 
Published: March 2018

AbstractThis study is focused on interpretation of ultrahigh-resolution seismoacoustic data from the northeastern slope of the Ceará Rise (Central Atlantic) acquired using the SES 2000 deep parametric narrow-beam subbottom profiler during cruise 35 of RV Akademik Ioffe in 2011. The geologic nature of most of the detected reflectors is constrained by correlation of the results of seismoacoustic profiling with core data collected in frame of the Ocean Drilling Program (ODP site 929A-E). Detailed seismostratigraphic study of the Upper Quaternary deposits in the study area has implications for better understanding of the role of gravity flows and bottom currents in sedimentation on the NE slope of the rise for the past 1.2 Myr.
The Campanian–Maastrichtian magnetostratigraphy of the Volga region (vicinity of Volsk town)
Authors: Guzhikova A.A. , Ben’yamovskii V.N. 
Published: March 2018

Abstract
Paleomagnetism and rock magnetism have been studied for the first time in Campanian–Maastrichtian carbonate deposits (Sengilei, Karsun, and Radishchev Formations) from the Bolshevik and Kommunar quarries near the town of Volsk (Saratov area, Volga region). Characteristic components of normal and reverse polarity were detected in samples demagnetized in the alternating field, and positive results of the reversal test were obtained. The virtual geomagnetic pole wander paths calculated for the Sengilei Formation and lower Karsun Formation rocks showed statistical similarity to those for stable Europe of the respective age. The magnetostratigraphic zones revealed in the Bolshevik and Kommunar sections were correlated to chrons 33r, 32n2, 32n1, and 31r of the geomagnetic polarity time scale. The magnetic zones of predominantly reverse and normal polarity detected, though discontinuously, in the low magnetic uppermost Karsun Formation and in the Radishchev Formation correspond to the top of chron 31r and joint chrons 31n and 30n, respectively. Rock magnetic data help identifying deposits rich in cosmogenic metal particles and provide stratigraphic constraints on the Radishchev Formation base.
Distribution of organic matter in rocks of the Bazhenov horizon (West Siberia)
Authors: Kontorovich A.E. , Ponomareva E.V. , Burshtein L.M. , Glinskikh V.N. , Kim N.S. , Kostyreva E.A. , Pavlova M.A. , Rodchenko A.P. , Yan P.A. 
Published: March 2018

Abstract
We studied the distribution of organic carbon in rocks of the Bazhenov horizon, a unique object of predominantly biogenic sedimentation in the West Siberian sedimentary basin. The contents of organic carbon in the rocks were determined using the data from 4094 core analyses and core-log relationships derived from 48,500 radioactive- and electrical-log measurements. For the Bazhenov and Tutleima Formations, both approaches gave the same results. The average content of organic carbon in the rocks is 7.7%. These data were used to compile a detailed map of the distribution of organic carbon contents in sedimentary rocks of the basin. It was shown that the average organic carbon content in the rocks increases from 2–4% on the periphery of the basin to 10–12% in its central, deepest part. The distribution of Corg values in the basin is highly asymmetric. The highest Corg values are observed in the southwestern part of the basin interior, where beds with &gt; 10% Corg range in thickness from 5 to 12–15 m. In sections, the highest Corg values are observed in their middle and upper parts, composed predominantly of silicites and mixtites enriched in biogenic silica.
From babbling to first words in Tashlhiyt language acquisition: longitudinal two-case studies
Authors: Lahrouchi Mohamed , Kern Sophie 
Published: March 2018

AbstractStrong similarities observed between babbling and first words suggest a universal foundation of word production in children. The aim of this work was to evaluate the role of biomechanical constraints on babbling and first words production in two children acquiring Tashlhiyt, a Berber language spoken in Morocco. When considering isolated sounds and syllable types, our data provided evidence for a universal basis for early vocal patterns. The subjects produced more stops, more coronals and labials, vowels preferentially belonging to the lower left part of the vowel space, and open syllables. However, they only partially confirmed the existence of the preferred CV combinations generally observed in the early production of children learning various languages. The comparison between babbling and first words revealed a linguistic continuity between the two periods but also some increasing complexity and diversification in the words, which can be explained by an increase of articulatory capacities.
Social Capital and Mental Health in Post-Disaster/Conflict Contexts: A Systematic Review
Authors: Noel Pia , Cork Cliodhna , White Ross G. 
Published: March 2018

AbstractSocial capital (SC) is highlighted as an important factor for post-crisis mental health outcomes. However, the heterogeneous nature of the construct makes it difficult to get a clear picture of the evidence concerning the association between SC indices and mental health. This review examines how SC is conceptualized and measured, and the relationships with other variables in quantitative empirical studies investigating the associations between SC and mental health in post-disaster and post-conflict contexts. It includes primary data studies focusing on this association in civilian populations. Studies were identified by searching electronic databases, bibliographic mining, cited reference searching, and personal contact with experts. In total, 15 studies were included: 12 in post-natural disaster contexts and 3 in conflict-affected settings. Findings suggested that individual cognitive SC had an inverse association with post-traumatic stress disorder, anxiety, and depression, and that ecological cognitive SC was positively associated with mental well-being. Individual structural SC (in the form of community networks) may be psychologically protective. However, most of the evidence was cross-sectional, limiting conclusions about causal relationships. More clarity and consistency is needed in the conceptualization and measurement of SC in order to inform post-crisis mental health interventions. (Disaster Med Public Health Preparedness. 2018;12:791-802)
Effects of fish and krill oil on gene expression in peripheral blood mononuclear cells and circulating markers of inflammation: a randomised controlled trial
Authors: Rundblad Amanda , Holven Kirsten B. , Bruheim Inge , Myhrstad Mari C. , Ulven Stine M. 
Published: March 2018

AbstractMarine n-3 (omega-3) fatty acids alter gene expression by regulating the activity of transcription factors. Krill oil is a source of marine n-3 fatty acids that has been shown to modulate gene expression in animal studies; however, the effect in humans is not known. Hence, we aimed to compare the effect of intake of krill oil, lean and fatty fish with a similar content of n-3 fatty acids, and high-oleic sunflower oil (HOSO) with added astaxanthin on the expression of genes involved in glucose and lipid metabolism and inflammation in peripheral blood mononuclear cells (PBMC) as well as circulating inflammatory markers. In an 8-week trial, healthy men and women aged 18–70 years with fasting TAG of 1·3–4·0 mmol/l were randomised to receive krill oil capsules (n 12), HOSO capsules (n 12) or lean and fatty fish (n 12). The weekly intakes of marine n-3 fatty acids from the interventions were 4654, 0 and 4103 mg, respectively. The mRNA expression of four genes, PPAR γ coactivator 1A (PPARGC1A), steaoryl-CoA desaturase (SCD), ATP binding cassette A1 (ABCA1) and cluster of differentiation 40 (CD40), were differently altered by the interventions. Furthermore, within-group analyses revealed that krill oil down-regulated the mRNA expression of thirteen genes, including genes involved in glucose and cholesterol metabolism and β-oxidation. Fish altered the mRNA expression of four genes and HOSO down-regulated sixteen genes, including several inflammation-related genes. There were no differences between the groups in circulating inflammatory markers after the intervention. In conclusion, the intake of krill oil and HOSO with added astaxanthin alter the PBMC mRNA expression of more genes than the intake of fish.
Meteorological factors and respiratory syncytial virus seasonality in subtropical Australia
Authors: Morley C. , Grimwood K. , Maloney S. , Ware R. S. 
Published: March 2018

AbstractEvidence is emerging regarding the influence of meteorological factors on seasonal respiratory syncytial virus outbreaks. Data however, are limited for subtropical regions, especially in the southern hemisphere. We examined whether meteorological data (daily minimum and maximum temperatures, rainfall, relative humidity, dew point, daily global solar exposure) and tourist numbers were associated with the incidence of RSV in children aged <5 years for the Gold Coast region of South-East Queensland, Australia (latitude 28.0°S). RSV cases between 1 July 2007 and 30 June 2016 were identified from the Pathology Queensland Gold Coast Laboratory database. Time-series methods were used to identify seasonal patterns. RSV activity peaked in mid-to-late autumn (April–May), tapering in winter (June–August). While most meteorological variables measured were associated with RSV incidence, rainfall (ρ = 0.40, 95% confidence interval (CI) 0.32–0.48) and humidity (ρ = 0.38, 95% CI 0.29–0.46) 8 weeks earlier had the nearest temporal relationship. Tourist numbers were not correlated with RSV activity. Identifying meteorological conditions associated with seasonal RSV epidemics can improve understanding of virus transmission and assist planning for their impact upon the health sector, including timing of passive RSV immunoprophylaxis for high-risk infants and future public health interventions, such as maternal immunisation with RSV vaccines.
Dairy products and bone health: how strong is the scientific evidence?
Authors: van den Heuvel Ellen G. H. M. , Steijns Jan M. J. M. 
Published: March 2018

AbstractThe relevance of dairy produce for the diminishment of osteoporotic risk is still a matter of scientific debate due to the outcome of a few single observational studies. This review will address the most robust point estimate on the role of dairy products, as reported in systematic reviews and meta-analyses on randomised controlled trials in the case of bone mineralisation or prospective studies in the case of fracture risk. Plain dairy products or those fortified with Ca and/or vitamin D improve total body bone mineral content (BMC) by 45–50 g over 1 year when the daily baseline Ca intake is lower than 750 mg in Caucasians and Chinese girls. In Caucasian and Chinese women, Ca from (fortified) dairy products increases bone mineral density (BMD) by 0·7–1·8 % over 2 years dependent on the site of measurement. Despite the results on BMC, there are currently no studies that have investigated the potential of dairy products to reduce fracture risk in children. In adult Caucasian women, daily intake of 200–250 ml of milk is associated with a reduction in fracture risk of 5 % or higher. In conclusion, the role of dairy products for BMC or BMD has been sufficiently established in Chinese and Caucasian girls and women. In Caucasian women, drinking milk also reduces fracture risk. More research on the role of dairy products within the context of bone health-promoting diets is needed in specific ethnicities, other than Chinese and Caucasians, and in men.