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https://www.readbyqxmd.com/read/29244773/nanoscale-phase-evolution-during-continuum-decomposition-of-fe-cr-alloys
#1
Yongsheng Li, Lihui Zhu, Chengwei Liu, Shujing Shi
The continuum decomposition of the Fe-Cr alloys from initial phase separation to steady-state coarsening with concentrations varying from 25 at % Cr and 30 at % Cr to 33 at % Cr aged at 750 K was studied by utilizing three-dimensional phase-field simulations. The dynamic stages of separation of nanoscale Cr-enriched α' phase were distinguished by the evolution of the volume fraction, particle number density and the average particle radius of the α' phase. The stage of steady-state coarsening was characterized with an equilibrium volume fraction and decreasing particle number density...
December 15, 2017: Materials
https://www.readbyqxmd.com/read/29244061/association-between-sustained-poverty-and-changes-in-body-mass-index-from-1990-to-2015-the-coronary-artery-risk-development-in-young-adults-study
#2
Tali Elfassy, M Maria Glymour, Kiarri N Kershaw, Mercedes Carnethon, Maria M Llabre, Cora E Lewis, Neil Schneiderman, Adina Zeki Al Hazzouri
We sought to determine whether sustained poverty is associated with change in body mass index (BMI) among 4,762 black and white adults of the Coronary Artery Risk Development In Young Adults study. Household income in the past year and current BMI were measured at seven visits between 1990 and 2015. Sustained poverty was the proportion of visits during which household income was below 200% of the federal poverty level (range, 0%-100%). Sustained poverty and BMI were time-updated. Mean age in 1990 was 30 years...
December 13, 2017: American Journal of Epidemiology
https://www.readbyqxmd.com/read/29242673/mexican-origin-adolescents-educational-expectation-trajectories-intersection-of-nativity-sex-and-socioeconomic-status
#3
Norma J Perez-Brena, Melissa Y Delgado, Sue A Rodríguez De Jesús, Kimberly A Updegraff, Adriana J Umaña-Taylor
Expectancy value theory and a cultural-ecological framework are integrated in this study to examine the trajectories of 246 Mexican-origin adolescents' (Mage = 12.52, SDage = 0.58; 51% girls, 62% U.S.-born) educational expectations across eight years. Findings from a multilevel growth model revealed that early adolescents expected to complete a post-bachelor's degree, but expectations declined in middle adolescence and improved in late adolescence. This pattern was more pronounced for immigrant, compared to U...
January 2017: Journal of Applied Developmental Psychology
https://www.readbyqxmd.com/read/29242356/pre-treatment-growth-and-igf-i-deficiency-as-main-predictors-of-response-to-growth-hormone-therapy-in-neural-models
#4
Urszula Smyczynska, Joanna Smyczynska, Maciej Hilczer, Renata Stawerska, Ryszard Tadeusiewicz, Andrzej Lewinski
Mathematical models have been applied in prediction of growth hormone treatment effectiveness in children since the end of 1990s. Usually they were multiple linear regression models, however there are also examples derived by empirical non-linear methods. Proposed solution consists in application of machine learning technique - artificial neural networks - to analyse this problem. This new methodology, contrary to previous ones, allows detection of both linear and non-linear dependencies without assuming their character a priori...
December 14, 2017: Endocrine Connections
https://www.readbyqxmd.com/read/29240842/analysis-of-ecological-thresholds-in-a-temperate-forest-undergoing-dieback
#5
Philip Martin, Adrian C Newton, Elena Cantarello, Paul M Evans
Positive feedbacks in drivers of degradation can cause threshold responses in natural ecosystems. Though threshold responses have received much attention in studies of aquatic ecosystems, they have been neglected in terrestrial systems, such as forests, where the long time-scales required for monitoring have impeded research. In this study we explored the role of positive feedbacks in a temperate forest that has been monitored for 50 years and is undergoing dieback, largely as a result of death of the canopy dominant species (Fagus sylvatica, beech)...
2017: PloS One
https://www.readbyqxmd.com/read/29240677/amniotic-fluid-arginine-from-gestational-weeks-13-to-15-is-a-predictor-of-birth-weight-length-and-head-circumference
#6
Astrid Bjørke-Jenssen, Per Magne Ueland, Anne-Lise Bjørke-Monsen
Arginine is a constituent of proteins and a precursor for polyamines and nitric oxide, and is essential for placentation, angiogenesis, and growth. Maternal plasma arginine concentrations are found to be lower in pregnancies complicated by fetal growth restriction, and arginine supplementation in later pregnancy is reported to increase birth weight. We measured arginine and the metabolites asymmetric dimethylarginine (ADMA) and symmetric dimethylarginine (SDMA) in the amniotic fluid obtained in pregnancy weeks 13 to 15 from 363 pregnancies with a documented normal outcome and related the concentrations to birth weight, length, and head circumference...
December 14, 2017: Nutrients
https://www.readbyqxmd.com/read/29239300/hydrodynamic-instabilities-in-miscible-fluids
#7
Domenico Truzzolillo, Luca Cipelletti
Hydrodynamic instabilities in miscible fluids are ubiquitous, from natural phenomena up to geological scales, to industrial and technological applications, where they represent the only way to control and promote mixing at low Reynolds numbers, well below the transition from laminar to turbulent flow. As for immiscible fluids, the onset of hydrodynamic instabilities in miscible fluids is directly related to the physics of their interfaces. The focus of this review is therefore on the general mechanisms driving the growth of disturbances at the boundary between miscible fluids, under a variety of forcing conditions...
December 14, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/29238373/guided-tissue-regeneration-and-platelet-rich-growth-factor-for-the-treatment-of-grade-ii-furcation-defects-a-randomized-double-blinded-clinical-trial-a-pilot-study
#8
Niloofar Jenabian, Sina Haghanifar, Hodis Ehsani, Ehsan Zahedi, Masumeh Haghpanah
Background: The treatment of furcation area defects remained as a challenging issue in periodontal treatments. Regeneration treatment of furcation defects is the most discussed periodontal treatment. Although not completely hopeless in prognosis, the presence of the furcation involvement significantly increases the chance of tooth loss. The current research was conductedeto compare theeadditive effect of combined guided tissue regeneration (GTR) and platelet-rich growth factor (PRGF) on the treatment of furcation bony defects...
November 2017: Dental Research Journal
https://www.readbyqxmd.com/read/29237009/recent-trends-in-chemotherapy-use-and-oncologists-treatment-recommendations-for-early-stage-breast-cancer
#9
Allison W Kurian, Irina Bondarenko, Reshma Jagsi, Christopher R Friese, M Chandler McLeod, Sarah T Hawley, Ann S Hamilton, Kevin C Ward, Timothy P Hofer, Steven J Katz
Background: There is growing concern about overtreatment of breast cancer as outcomes have improved over time. However, little is known about how chemotherapy use and oncologists' recommendations have changed in recent years. Methods: We surveyed 5080 women (70% response rate) diagnosed with breast cancer between 2013 and 2015 and accrued through two Surveillance, Epidemiology, and End Results registries (Georgia and Los Angeles) about chemotherapy receipt and their oncologists' chemotherapy recommendations...
December 11, 2017: Journal of the National Cancer Institute
https://www.readbyqxmd.com/read/29236728/catch-up-growth-in-stunted-children-definitions-and-predictors
#10
Chris Desmond, Daniela Casale
This paper examines the incidence and correlates of linear growth catch up in early childhood among stunted children, using a range of definitions of catch up. Catch-up growth between two and five years of age is defined in both absolute terms (i.e. the centimetre height deficit from the healthy reference population mean is reduced) and relative terms (the height-for-age z-score improved or passed the -2SD or -1SD cut-off points). Data from a cohort study from urban South Africa are used to estimate the percentage of children who caught up and the predictors of catch-up growth according to these varying definitions...
2017: PloS One
https://www.readbyqxmd.com/read/29236171/uterine%C3%A2-fibroid-size-modifications-during-pregnancy-and-puerperium-evidence-from-the-first-systematic-review-of-literature
#11
REVIEW
Amerigo Vitagliano, Marco Noventa, Attilio Di Spiezio Sardo, Gabriele Saccone, Salvatore Gizzo, Shara Borgato, Salvatore Giovannni Vitale, Antonio Simone Laganà, Giovanni Battista Nardelli, Pietro Salvatore Litta, Carlo Saccardi
PURPOSE: The influence of pregnancy on uterine fibroid size still remains an unsolved dilemma. Basing on current knowledge, physicians are not able to inform patients about the likelihood of uterine fibroids to modify their size during pregnancy. Study aim was to summarize available evidence concerning the size modifications of uterine fibroids during each trimester of pregnancy and during puerperium. METHODS: The review was reported following the PRISMA guidelines and registered in PROSPERO (registration number: CRD42017071117)...
December 13, 2017: Archives of Gynecology and Obstetrics
https://www.readbyqxmd.com/read/29236083/non-linear-relationship-between-economic-growth-and-co%C3%A2-emissions-in-china-an-empirical-study-based-on-panel-smooth-transition-regression-models
#12
Zheng-Xin Wang, Peng Hao, Pei-Yi Yao
The non-linear relationship between provincial economic growth and carbon emissions is investigated by using panel smooth transition regression (PSTR) models. The research indicates that, on the condition of separately taking Gross Domestic Product per capita (GDPpc), energy structure (Es), and urbanisation level (Ul) as transition variables, three models all reject the null hypothesis of a linear relationship, i.e., a non-linear relationship exists. The results show that the three models all contain only one transition function but different numbers of location parameters...
December 13, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29233215/unraveling-amyloid-formation-paths-of-parkinson-s-disease-protein-%C3%AE-synuclein-triggered-by-anionic-vesicles
#13
Juris Kiskis, Istvan Horvath, Pernilla Wittung-Stafshede, Sandra Rocha
Amyloid formation of the synaptic brain protein α-synuclein (αS) is related to degeneration of dopaminergic neurons in Parkinson's disease patients. αS is thought to function in vesicle transport and fusion and it binds strongly to negatively charged vesicles in vitro. Here we combined circular dichroism, fluorescence and imaging methods in vitro to characterize the interaction of αS with negatively charged vesicles of DOPS (1,2-dioleoyl-sn-glycero-3-phospho-L-serine, sodium salt) and DOPG (1,2-dioleoyl-sn-glycero-3-phospho-(1'-rac-glycerol), sodium salt) and the consequences of such interactions on αS amyloid formation...
January 2017: Quarterly Reviews of Biophysics
https://www.readbyqxmd.com/read/29231275/effects-of-limit-feeding-diets-with-different-forage-to-concentrate-ratios-on-nutrient-intake-rumination-ruminal-fermentation-digestibility-blood-parameters-and-growth-in-holstein-heifers
#14
Jun Zhang, Haitao Shi, Yajing Wang, Shengli Li, Hongtao Zhang, Zhijun Cao, Kailun Yang
The objective of this study was using a wide range of dietary concentrate levels to investigate the major effects of limit-feeding on heifers. Twenty-four Holstein heifers were blocked into six groups and fed with one of four diets containing different levels of concentrate (20%, 40%, 60% and 80% on a dry matter (DM) basis) but with same intakes of metabolizable energy for 28 days. Increasing levels of dietary concentrate caused decreased (P ≤ 0.02) intakes of dry matter (DMI) and neutral detergent fiber and total rumination time, but increased (P < 0...
December 12, 2017: Animal Science Journal, Nihon Chikusan Gakkaihō
https://www.readbyqxmd.com/read/29230814/nigella-sativa-l-as-an-alternative-antibiotic-feed-supplement-and-effect-on-growth-performance-in-weanling-pigs
#15
Branko T Petrujkić, Ross C Beier, Haiqi He, Kenneth J Genovese, Christina L Swaggerty, Michael E Hume, Tawni L Crippen, Roger B Harvey, Robin C Anderson, David J Nisbet
BACKGROUND: Nigella sativa L. (NS) is a plant containing bioactive constituents like thymoquinone. Extracts of NS improve performance and reduce enteropathogen colonization in poultry and small ruminants but studies with swine are lacking. In two different studies oral administration of NS extracts at doses equivalent to 0, 1.5 and 4.5 g extract kg-1 diet was assessed on piglet performance and intestinal carriage of wildtype Escherichia coli and Campylobacter, and Salmonella Typhimurium...
December 11, 2017: Journal of the Science of Food and Agriculture
https://www.readbyqxmd.com/read/29229759/jmjd6-induces-hotair-an-oncogenic-lincrna-by-physically-interacting-with-its-proximal-promoter
#16
Antara Biswas, Abhijith Shettar, Geetashree Mukherjee, Paturu Kondaiah, Kartiki V Desai
<span style="color: black;">Using microarray analysis we found that HOX transcript antisense intergenic RNA (HOTAIR) is upregulated by Jumonji domain containing-6 (JMJD6), a bifunctional lysyl hydroxylase and arginine demethylase. In breast cancer, JMJD6 and HOTAIR RNAs increase tumor growth and associate with poor prognosis but no molecular relationship between them is known. We show that overexpression of JMJD6 increased HOTAIR expression and JMJD6 siRNAs suppressed it in ER+ MCF-7, triple negative MDA-MB-231 and non-breast cancer HEK 293 cells...
December 11, 2017: Biochemical Journal
https://www.readbyqxmd.com/read/29229171/special-considerations-in-pediatric-kidney-transplantation
#17
REVIEW
Sean A Hebert, Rita D Swinford, David R Hall, Jason K Au, John S Bynon
Universally accepted as the treatment of choice for children needing renal replacement therapy, kidney transplantation affords children the opportunity for an improved quality of life over dialysis therapy. Immunologic and surgical advances over the last 15 years have improved the pediatric patient and kidney graft survival. Unique to pediatrics, congenital genitourinary anomalies are the most common primary diseases leading to kidney failure, many with urological issues. Early urological evaluation for post-transplant bladder dysfunction and emphasis on immunization adherence are the mainstays of pediatric pretransplant and post-transplant evaluations...
November 2017: Advances in Chronic Kidney Disease
https://www.readbyqxmd.com/read/29227424/effect-of-antiretroviral-therapy-on-growth-parameters-of-children-with-hiv-infection
#18
Anju Seth, Rajeev Kumar Malhotra, Rohini Gupta, Jagdish Chandra, Praveen Kumar, Sarita Singh, Garima Sharma
BACKGROUND: Children living with HIV (CLHIV) commonly experience growth failure. We report growth parameters in CLHIV at baseline and during 3 years of antiretroviral therapy (ART). METHODS: Records of CLHIV who had completed at least 3 years on ART were reviewed after excluding subjects who died, were lost to follow-up or developed treatment failure to assess impact of sustained administration of ART. Height-for-age (HFA) and body mass index for age (BFA) Z scores were calculated, and proportion of CLHIV with wasting and stunting estimated at baseline, 6, 12, 24 and 36 months after starting ART using the linear mixed model...
January 2018: Pediatric Infectious Disease Journal
https://www.readbyqxmd.com/read/29227283/sharpin-mediated-regulation-of-protein-arginine-methyltransferase-5-controls-melanoma-growth
#19
Hironari Tamiya, Hyungsoo Kim, Oleksiy Klymenko, Heejung Kim, Yongmei Feng, Tongwu Zhang, Ji Yun Han, Ayako Murao, Scott J Snipas, Lucia Jilaveanu, Kevin Brown, Harriet Kluger, Hao Zhang, Kazuhiro Iwai, Ze'ev A Ronai
SHARPIN, an adaptor for the linear ubiquitin chain assembly complex (LUBAC), plays important roles in NF-κB signaling and inflammation. Here, we have demonstrated a LUBAC-independent role for SHARPIN in regulating melanoma growth. We observed that SHARPIN interacted with PRMT5, a type II protein arginine methyltransferase, and increased its multiprotein complex and methyltransferase activity. Activated PRMT5 controlled the expression of the transcription factors SOX10 and MITF by SHARPIN-dependent arginine dimethylation and inhibition of the transcriptional corepressor SKI...
December 11, 2017: Journal of Clinical Investigation
https://www.readbyqxmd.com/read/29227183/factors-associated-with-medical-doctors-intentions-to-discriminate-against-transgender-patients-in-kuala-lumpur-malaysia
#20
Aishwarya Vijay, Valerie A Earnshaw, Ying Chew Tee, Veena Pillai, Jaclyn M White Hughto, Kirsty Clark, Adeeba Kamarulzaman, Frederick L Altice, Jeffrey A Wickersham
PURPOSE: Transgender people are frequent targets of discrimination. Discrimination against transgender people in the context of healthcare can lead to poor health outcomes and facilitate the growth of health disparities. This study explores factors associated with medical doctors' intentions to discriminate against transgender people in Malaysia. METHODS: A total of 436 physicians at two major university medical centers in Kuala Lumpur, Malaysia, completed an online survey...
December 11, 2017: LGBT Health
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