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https://www.readbyqxmd.com/read/28545207/quality-and-reactivity-of-dissolved-organic-matter-in-a-mediterranean-river-across-hydrological-and-spatial-gradients
#1
Elisabet Ejarque, Anna Freixa, Eusebi Vazquez, Alba Guarch, Stefano Amalfitano, Stefano Fazi, Anna M Romaní, Andrea Butturini
Understanding DOM transport and reactivity in rivers is essential to having a complete picture of the global carbon cycle. In this study, we explore the effects of hydrological variability and downstream transport on dissolved organic matter (DOM) dynamics in a Mediterranean river. We sampled the main stem of the river Tordera from the source to the sea, over a range of fifteen hydrological conditions including extreme events (flood and drought). By exploring spatial and temporal gradients of DOM fluorescence properties, river hydrology was found to be a significant predictor of DOM spatial heterogeneity...
May 20, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28545162/the-almost-unbearable-lightness-of-personality
#2
Jüri Allik
Researchers seem to believe that accepting the reality of personality traits inevitably leads to a dogma about the incredible complexity of these traits and their judgment. This paper challenges this thesis and its assertion that the accuracy of personality judgment can only be achieved when a "good target" or a "good trait" is being judged using "good information," and when a "good judge" makes the judgment. It is argued that because trait dimensions are universally applicable to all persons there is no stable ranking of good targets...
May 25, 2017: Journal of Personality
https://www.readbyqxmd.com/read/28544961/superficial-physicochemical-properties-of-polyurethane-biomaterials-as-osteogenic-regulators-in-human-mesenchymal-stem-cells-fates
#3
Mohsen Shahrousvand, Gity Mir Mohamad Sadeghi, Ehsan Shahrousvand, Marzieh Ghollasi, Ali Salimi
All of the cells' interactions are done through their surfaces. Evaluation of surface physicochemical scaffolds along with other factors is important and determines the fate of stem cells. In this work, biodegradable and biocompatible polyester/polyether based polyurethanes (PUs) were synthesized by polycaprolactone diol (PCL) and poly (tetra methylene ether) glycol (PTMEG) as the soft segment. To assess better the impact of surface parameters such as stiffness and roughness effects on osteogenic differentiation of the human mesenchymal stem cell (hMSC), the dimension effect of substrates was eliminated and two-dimensional membranes were produced by synthesized polyurethane...
May 1, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28544868/a-mathematical-model-captures-the-structure-of-subjective-affect
#4
Alison M Mattek, George L Wolford, Paul J Whalen
Although it is possible to observe when another person is having an emotional moment, we also derive information about the affective states of others from what they tell us they are feeling. In an effort to distill the complexity of affective experience, psychologists routinely focus on a simplified subset of subjective rating scales (i.e., dimensions) that capture considerable variability in reported affect: reported valence (i.e., how good or bad?) and reported arousal (e.g., how strong is the emotion you are feeling?)...
May 2017: Perspectives on Psychological Science: a Journal of the Association for Psychological Science
https://www.readbyqxmd.com/read/28544863/how-social-status-shapes-person-perception-and-evaluation-a-social-neuroscience-perspective
#5
Bradley D Mattan, Jennifer T Kubota, Jasmin Cloutier
Inferring the relative rank (i.e., status) of others is essential to navigating social hierarchies. A survey of the expanding social psychological and neuroscience literatures on status reveals a diversity of focuses (e.g., perceiver vs. agent), operationalizations (e.g., status as dominance vs. wealth), and methodologies (e.g., behavioral, neuroscientific). Accommodating this burgeoning literature on status in person perception, the present review offers a novel social neuroscientific framework that integrates existing work with theoretical clarity...
May 2017: Perspectives on Psychological Science: a Journal of the Association for Psychological Science
https://www.readbyqxmd.com/read/28544830/assessment-of-contributors-of-aortopathy-and-subclinical-left-ventricular-dysfunction-in-normally-functioning-bicuspid-aortic-valves
#6
Kamil Tuluce, Selcen Yakar Tuluce, Ersin Cagri Simsek, Serdar Bayata, Cem Nazli
BACKGROUND: Left ventricular (LV) function and the dimensions of aortic valves from normally functioning bicuspid aortic valve (BAV) patients were compared with those of healthy control patients. A comparison between patients with antero-posterior BAV (BAV-AP) or right-left BAV (BAV-RL) was also performed, and the determinants of aortopathy and LV function were investigated. METHODS: Sixty-eight patients with aortic velocities <2 m/s and trivial or mild aortic regurgitation were included in the study...
January 2017: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/28544826/preoperative-computed-tomography-scan-analysis-of-interleaflets-triangles-to-guide-aortic-root-repair-procedures
#7
Claudia Romagnoni, Andrea Mangini, Monica Contino, Rubina Rosa, Sonia Ippolito, Guido Gelpi, Carlo Antona
BACKGROUND: Stabilization of the ventriculo-aortic junction (VAJ) is gaining increasing interest in the context of aortic valve repair, since its dilation is a well-recognized risk factor for long-term repair failure. Interleaflets triangles are key elements of the VAJ, but cannot be completely visualized using echocardiography. A three-dimensional (3D) reconstruction of electrocardiogram-triggered computed tomography (CT) scan images allows an analysis of the real dimensions and anatomic characteristics of the subcommissural triangles...
January 2017: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/28544590/location-of-implant-retained-fixed-dentures-affects-oral-health-related-quality-of-life
#8
Maoko Hara, Takashi Matsumoto, Sawako Yokoyama, Daisuke Higuchi, Kazuyoshi Baba
BACKGROUND: The effects of the locations of dental implants on treatment outcomes, as evaluated by oral health-related quality of life (OHRQoL) assessment, remain controversial. PURPOSE: To investigate the association between the locations of dental implants and changes in OHRQoL. MATERIALS AND METHODS: Sixty-eight subjects received implant treatment in the anterior or posterior region and completed the Oral Health Impact Profile (OHIP) questionnaire before and after treatment...
May 25, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/28544203/observation-of-ch%C3%A2-%C3%A2-%C3%A2-%C3%AF-interactions-between-methyl-and-carbonyl-groups-in-proteins
#9
Frédéric A Perras, Dominique Marion, Jérôme Boisbouvier, David L Bryce, Michael J Plevin
Protein structure and function is dependent on myriad noncovalent interactions. Direct detection and characterization of these weak interactions in large biomolecules, such as proteins, is experimentally challenging. Herein, we report the first observation and measurement of long-range "through-space" scalar couplings between methyl and backbone carbonyl groups in proteins. These J couplings are indicative of the presence of noncovalent C-H⋅⋅⋅π hydrogen-bond-like interactions involving the amide π network...
May 22, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28544136/conceptualizations-of-fairness-and-legitimacy-in-the-context-of-ethiopian-health-priority-setting-reflections-on-the-applicability-of-accountability-for-reasonableness
#10
Kadia Petricca, Asfaw Bekele
A critical element in building stronger health systems involves strengthening good governance to build capacity for transparent and fair health planning and priority setting. Over the past 20 years, the ethical framework Accountability for Reasonableness (A4R) has been a prominent conceptual guide in strengthening fair and legitimate processes of health decision-making. While many of the principles embedded within the framework are congruent with Western conceptualizations of what constitutes procedural fairness, there is a paucity in the literature that captures the degree of resonance between these principles and the views of decision makers from non-Western settings; particularly in Africa, where many countries have only recently, within the last 20-30 years, become more democratic...
May 22, 2017: Developing World Bioethics
https://www.readbyqxmd.com/read/28543953/improved-technical-success-postnatal-outcomes-and-refined-predictors-of-outcome-for-fetal-aortic-valvuloplasty
#11
Kevin G Friedman, Lynn A Sleeper, Lindsay R Freud, Audrey C Marshall, Max E Godfrey, Monika Drogosz, Terra Lafranchi, Carol B Benson, Louise E Wilkins-Haug, Wayne Tworetzky
BACKGROUND: Fetal aortic valvuloplasty (FAV) may prevent progression of mid-gestation aortic stenosis (AS) to hypoplastic left heart syndrome (HLHS). METHODS: We evaluate outcomes in 123 fetuses that underwent FAV between 2000 and 2015. We analyze whether technical success and biventricular (Biv) outcome changed from the early era (2000-08) to a more recent era (2009-15) and identify pre-FAV predictors of Biv outcome. We developed CART models to predict the likelihood of Biv outcome...
May 22, 2017: Ultrasound in Obstetrics & Gynecology
https://www.readbyqxmd.com/read/28543797/simultaneous-use-of-linear-and-nonlinear-gradients-for-b1-inhomogeneity-correction
#12
Koray Ertan, Ergin Atalar
The simultaneous use of linear spatial encoding magnetic fields (L-SEMs) and nonlinear spatial encoding magnetic fields (N-SEMs) in B1(+) inhomogeneity problems is formulated and demonstrated with both simulations and experiments. Independent excitation k-space variables for N-SEMs are formulated for the simultaneous use of L-SEMs and N-SEMs by assuming a small tip angle. The formulation shows that, when N-SEMs are considered as an independent excitation k-space variable, numerous different k-space trajectories and frequency weightings differing in dimension, length, and energy can be designed for a given target transverse magnetization distribution...
May 25, 2017: NMR in Biomedicine
https://www.readbyqxmd.com/read/28543754/validating-the-european-health-literacy-survey-questionnaire-in-people-with-type-2-diabetes-latent-trait-analyses-applying-multidimensional-rasch-modelling-and-confirmatory-factor-analysis
#13
Hanne Søberg Finbråten, Kjell Sverre Pettersen, Bodil Wilde-Larsson, Gun Nordström, Anne Trollvik, Øystein Guttersrud
AIM: To validate the European Health Literacy Survey Questionnaire (HLS-EU-Q47) in people with type 2 diabetes mellitus. BACKGROUND: The HLS-EU-Q47 latent variable is outlined in a framework with four cognitive domains integrated in three health domains, implying 12 theoretically defined subscales. Valid and reliable health literacy measurers are crucial to effectively adapt health communication and education to individuals and groups of patients. DESIGN: Cross-sectional study applying confirmatory latent trait analyses...
May 24, 2017: Journal of Advanced Nursing
https://www.readbyqxmd.com/read/28543718/introduction-of-a-new-instrument-to-measure-motivation-for-gaming-the-electronic-gaming-motives-questionnaire
#14
Helga Myrseth, Guy Notelaers, Leif Åge Strand, Einar Kristian Borud, Olav Kjellevold Olsen
AIMS: To adapt the four-dimensional Gambling Motives Questionnaire-Revised (GMQ-R) to measure the motivation for engaging in electronic gaming, and to validate the internal structure and investigate the criterion validity of the new Electronic Gaming Motives Questionnaire (EGMQ). DESIGN AND SETTING: The GMQ-R was adapted to measure motivation for playing video games and the new instrument was tested on a sample of Norwegian conscripts randomly selected from the pool of conscripts who started their military service between 2013 and 2015...
May 20, 2017: Addiction
https://www.readbyqxmd.com/read/28543683/photo-responsive-soft-ionic-crystals-ion-pairing-assemblies-of-azobenzene-carboxylates
#15
Ryohei Yamakado, Mitsuo Hara, Shusaku Nagano, Takahiro Seki, Hiromitsu Maeda
This report delineates the design and synthesis of negatively charged azobenzene derivatives that form photo-responsive ion-pairing assemblies. The azobenzene carboxylates possessing aliphatic chains were prepared as photo-responsive anions that promote the formation of ion-pairing dimension-controlled assemblies, including mesophases, when used in conjunction with a tetrabutylammonium (TBA) cation. The photo-responsive properties of the ion pairs and the precursory carboxylic acids in the bulk state were examined by POM and XRD, demonstrating that liquid crystal (LC)-liquid and crystal-liquid phase transitions occurred depending on the number and lengths of the aliphatic chains of each assembly...
May 23, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28543624/areas-for-quality-improvements-in-heart-failure-care-quality-of-care-from-the-family-members-perspective
#16
Karin Hellström Ängerud, Kurt Boman, Margareta Brännström
BACKGROUND: The complex needs of people with chronic heart failure (HF) place great demands on their family members, and it is important to ask family members about their perspectives on the quality of HF care. OBJECTIVE: To describe family members' perceptions of quality of HF care in an outpatient setting. METHODS: A cross-sectional study using a short form of the Quality from Patients' Perspective (QPP) questionnaire for data collection...
May 24, 2017: Scandinavian Journal of Caring Sciences
https://www.readbyqxmd.com/read/28543540/computational-modeling-of-915-mhz-microwave-ablation-comparative-assessment-of-temperature-dependent-tissue-dielectric-models
#17
Garron Deshazer, Mark Hagmann, Derek Merck, Jan Sebek, Kent B Moore, Punit Prakash
PURPOSE: The objective of this study is to develop a computational model for simulating 915 MHz microwave ablation (MWA), and verify the simulation predictions of transient temperature profiles against experimental measurements. Due to the limited experimental data characterizing temperature-dependent changes of tissue dielectric properties at 915 MHz, we comparatively assess two temperature dependent approaches of modeling of dielectric properties: model A- piecewise linear temperature dependencies based on existing, but limited, experimental data, and model B- similar to model A, but augmented with linear decrease in electrical conductivity above 95 °C, as guided by our experimental measurements...
May 23, 2017: Medical Physics
https://www.readbyqxmd.com/read/28543185/iron-oxide-nanoparticles-decrease-nuclear-fractal-dimension-of-buccal-epithelial-cells-in-a-time-dependent-manner
#18
D Nikolovski, S Dugalic, I Pantic
In this paper, we present results that iron oxide nanoparticles (IONPs) induce time-dependent structural changes in nuclei of buccal epithelial cells. The cells were treated with magnetite, Fe3 O4 nanoparticles (spherical shape, diameter 80-100 nanometres). The digital micrographs of the nuclei were made in 3 different time points: 15, 30 and 60 min after the treatment with IONPs, as well as in the control cells. A total of 120 nuclear structures (30 per sample) were analysed. Fractal analysis of nuclei was done in ImageJ software of the National Institutes of Health, (Bethesda, MD, USA)...
May 23, 2017: Journal of Microscopy
https://www.readbyqxmd.com/read/28543029/temporal-trends-in-craniometric-estimates-of-admixture-for-a-modern-american-sample
#19
Bridget F B Algee-Hewitt
OBJECTIVES: Temporal trends in craniometric estimates of admixture are investigated for three U.S. populations in the FDB. Patterns of association between birth years and posterior probabilities of cluster membership are identified to assess how these proportions of admixture have changed over recent time. Demographic and genetic data correlates, patterns of morphological expression, and shifts in source populations are evaluated. MATERIALS AND METHODS: Estimates of three-way admixture were obtained for 1,521 individuals of documented population, sex, and birth years that span the 20th century...
May 24, 2017: American Journal of Physical Anthropology
https://www.readbyqxmd.com/read/28542927/research-review-what-do-we-know-about-psychopathic-traits-in-children
#20
Randall T Salekin
BACKGROUND: Research on the topic of child psychopathy has advanced over the past decade increasing what we know. METHOD: This qualitative review examines the research base for child psychopathy and emphasizes its three dimensions: grandiose-manipulative, callous-unemotional, and daring-impulsive. Literature is reviewed addressing the cognitive, emotional, motivational, personality, parenting, and biological correlates. RESULTS: Support has emerged for the phenotypic construct of child psychopathy, while questions remain regarding definitional issues and key external correlates (e...
May 24, 2017: Journal of Child Psychology and Psychiatry, and Allied Disciplines
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