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https://www.readbyqxmd.com/read/29232709/local-setting-influences-the-quantity-of-household-food-waste-in-mid-sized-south-african-towns
#1
Gamuchirai Chakona, Charlie M Shackleton
The world faces a food security challenge with approximately 868 million people undernourished and about two billion people suffering from the negative health consequences of micronutrient deficiencies. Yet, it is believed that at least 33% of food produced for human consumption is lost or wasted along the food chain. As food waste has a negative effect on food security, the present study sought to quantify household food waste along the rural-urban continuum in three South African mid-sized towns situated along an agro-ecological gradient...
2017: PloS One
https://www.readbyqxmd.com/read/29232644/past-15-year-trends-in-lifetime-cocaine-use-among-us-high-school-students
#2
Kristin E Schneider, Noa Krawczyk, Ziming Xuan, Renee M Johnson
BACKGROUND: Most recent research on adolescent drug use has focused on alcohol, tobacco, and marijuana. Less is known about the recent epidemiology of adolescent cocaine use, which has serious health consequences. PURPOSE: To describe recent trends in cocaine use by U.S. high school students, and identify differences in lifetime and repeated use across sex and racial/ethnic groups. METHODS: We used data from the national Youth Risk Behavior Surveys (YRBS) from 1999 to 2015...
December 8, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/29232628/epithelial-plasticity-in-the-mammary-gland
#3
REVIEW
Lindsey Seldin, Armelle Le Guelte, Ian G Macara
Many epithelial tissues rely on multipotent stem cells for the proper development and maintenance of their diverse cell lineages. Nevertheless, the identification of multipotent stem cell populations within the mammary gland has been a point of contention over the past decade. In this review, we provide a critical overview of the various lineage-tracing studies performed to address this issue and conclude that although multipotent stem cells exist in the embryonic mammary placode, the postnatal mammary gland instead contains distinct unipotent progenitor populations that contribute to stage-specific development and homeostasis...
December 9, 2017: Current Opinion in Cell Biology
https://www.readbyqxmd.com/read/29232617/shared-reality-in-interpersonal-relationships
#4
REVIEW
Susan M Andersen, Elizabeth Przybylinski
Close relationships afford us opportunities to create and maintain meaning systems as shared perceptions of ourselves and the world. Establishing a sense of mutual understanding allows for creating and maintaining lasting social bonds, and as such, is important in human relations. In a related vein, it has long been known that knowledge of significant others in one's life is stored in memory and evoked with new persons-in the social-cognitive process of 'transference'-imbuing new encounters with significance and leading to predictable cognitive, evaluative, motivational, and behavioral consequences, as well as shifts in the self and self-regulation, depending on the particular significant other evoked...
November 24, 2017: Current Opinion in Psychology
https://www.readbyqxmd.com/read/29232612/aliphatic-hydrocarbons-recovered-in-vegetables-from-soils-based-on-their-in-situ-distribution-in-various-soil-humus-fractions-using-a-successive-extraction-method
#5
Juan Zhang, Shu-Kai Fan, Ming-Hua Zhang, Michael L Grieneisen, Jian-Feng Zhang
Aliphatic hydrocarbons (AHs) are major petroleum contaminants in the environment. In this study, the AHs bound to various soil endogenetic humus fractions were separated through successive extraction. Most of the AHs (46.1%) in soils were adsorbed onto/into humic acids (HA) and a small quantity of AHs (9.6%) were organic solvent extractable. AHs in B. chinensis were also analyzed since their potential risks to the residents through ingestion. AHs from C21 to C34, so called high molecular weight AHs (HMWAHs), were dominant AHs in B...
December 6, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/29232597/evaporation-effect-on-two-dimensional-wicking-in-porous-media
#6
Eric M Benner, Dimiter N Petsev
We analyze the effect of evaporation on expanding capillary flow for losses normal to the plane of a two-dimensional porous medium using the potential flow theory formulation of the Lucas-Washburn method. Evaporation induces a finite steady state liquid flux on capillary flows into fan-shaped domains which is significantly greater than the flux into media of constant cross section. We introduce the evaporation-capillary number, a new dimensionless quantity, which governs the frontal motion when multiplied by the scaled time...
December 5, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29232595/a-unified-computational-account-of-cumulative-semantic-semantic-blocking-and-semantic-distractor-effects-in-picture-naming
#7
Ardi Roelofs
Computational models of lexical selection in spoken word production have been applied to semantic interference effects in picture naming response times obtained with continuous naming, blocked-cyclic naming, and picture-word interference paradigms. However, a unified computational account of the effects in the three paradigms is lacking. Here, I show that the inclusion of conceptual bias in the WEAVER++ model (Levelt, Roelofs, & Meyer, 1999) explains cumulative semantic and semantic blocking effects while preserving the model's account of semantic distractor effects...
December 9, 2017: Cognition
https://www.readbyqxmd.com/read/29232577/attachment-and-motivational-systems-relevance-of-sensitivity-to-punishment-for-eating-disorder-psychopathology
#8
Alessio Maria Monteleone, Valentina Cardi, Umberto Volpe, Giovanna Fico, Valeria Ruzzi, Francesca Pellegrino, Giovanni Castellini, Palmiero Monteleone, Mario Maj
An altered balance of reward and inhibition systems may explain Eating Disorder (ED) behaviors and could be related to difficulties in socio-emotional processing. According to attachment theory, early interaction with caregivers affects the ability to regulate emotion in adult interpersonal situation. The aim of our study was to investigate if insecure attachment may be related to ED symptomatology through changes in reward and inhibition systems. Seventy-eight people affected by EDs and 45 healthy controls (HC) filled in the Attachment Style Questionnaire (ASQ), the Behavioral Inhibition System-Behavioral Activation System Scale (BIS-BAS) and the Eating Disorders Inventory-2 (EDI-2) questionnaire...
December 5, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/29232576/effects-of-oxytocin-on-cortisol-reactivity-and-conflict-resolution-behaviors-among-couples-with-substance-misuse
#9
Julianne C Flanagan, Melanie S Fischer, Paul J Nietert, Sudie E Back, Megan Moran-Santa Maria, Alexandra Snead, Kathleen T Brady
Social stress, particularly in the form of dyadic conflict, is a well-established correlate of substance use disorders (SUD). The neuropeptide oxytocin can enhance prosocial behavior and mitigate addictive behaviors. These effects may be, in part, a result of oxytocin's ability to attenuate hypothalamic-pituitary-adrenal (HPA) axis dysregulation. However, only one study to date has examined the effects of oxytocin on neuroendocrine reactivity or conflict resolution behavior among couples. Participants (N = 33 couples or 66 total participants) were heterosexual couples in which one or both partners endorsed substance misuse...
December 6, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/29232572/facile-biological-synthetic-strategy-to-morphologically-aligned-ceo2-zro2-core-nanoparticles-using-justicia-adhatoda-extract-and-ionic-liquid-enhancement-of-its-bio-medical-properties
#10
Nithya Pandiyan, Balaji Murugesan, Jegatheeswaran Sonamuthu, Selvam Samayanan, Sundrarajan Mahalingam
In this study, a typical green synthesis route has approached for CeO2/ZrO2 core metal oxide nanoparticles using ionic liquid mediated Justicia adhatoda extract. This synthesis method is carried out at simple room temperature condition to obtain the core metal oxide nanoparticles. XRD, SEM and TEM studies employed to study the crystalline and surface morphological properties under nucleation, growth, and aggregation processes. CeO2/ZrO2 core metal oxides display agglomerated nano stick-like structure with 20-45nm size...
November 28, 2017: Journal of Photochemistry and Photobiology. B, Biology
https://www.readbyqxmd.com/read/29232536/enhancing-the-effectiveness-of-work-groups-and-teams-a-reflection
#11
Steve W J Kozlowski
Teamwork has been at the core of human accomplishment across the millennia, and it was a focus of social psychological inquiry on small group behavior for nearly half a century. However, as organizations world-wide reorganized work around teams over the past two decades, the nature of teamwork and factors influencing it became a central focus of research in organizational psychology and management. In this article, I reflect on the impetus, strategy, key features, and scientific contribution of "Enhancing the Effectiveness of Work Groups and Teams," by Kozlowski and Ilgen, a review monograph published in Psychological Science in the Public Interest in 2006...
December 1, 2017: Perspectives on Psychological Science: a Journal of the Association for Psychological Science
https://www.readbyqxmd.com/read/29232535/why-interventions-to-influence-adolescent-behavior-often-fail-but-could-succeed
#12
David S Yeager, Ronald E Dahl, Carol S Dweck
We provide a developmental perspective on two related issues: (a) why traditional preventative school-based interventions work reasonably well for children but less so for middle adolescents and (b) why some alternative approaches to interventions show promise for middle adolescents. We propose the hypothesis that traditional interventions fail when they do not align with adolescents' enhanced desire to feel respected and be accorded status; however, interventions that do align with this desire can motivate internalized, positive behavior change...
December 1, 2017: Perspectives on Psychological Science: a Journal of the Association for Psychological Science
https://www.readbyqxmd.com/read/29232526/prevention-of-childhood-obesity-in-child-health-services-follow-up-of-the-primrose-trial
#13
Johanna Enö Persson, Benjamin Bohman, Per Tynelius, Finn Rasmussen, Ata Ghaderi
BACKGROUND: Childhood obesity is an urgent public health concern, and there's a need for long-term, high-quality, primary prevention trials targeting parents of young children. The aim of the current study was to evaluate the long-term effect of a parental support program based on motivational interviewing (MI). METHODS: A cluster randomized controlled trial was carried out in eight Swedish counties. Participating families (N = 1355) were enrolled when the child was 9 months old, and participated in nine sessions during ∼39 months...
December 12, 2017: Childhood Obesity
https://www.readbyqxmd.com/read/29232520/controlling-the-dynamic-instability-of-capped-metal-nanoparticles-on-metallic-surfaces
#14
Evangelina Laura Pensa, Tim Albrecht
Small metal nanoparticles (NPs) with core-sizes ranging from 1-3 nm constitute a bridge between molecules and colloids with unique electronic, catalytic and other properties. Many applications entail immobilization onto solid supports, but while NP behavior in solution is well studied, the effect of the interaction between NPs and the substrate surface is understood less. Here, we follow the structural evolution of thiolated monolayer-protected AuNPs on Au(111) substrates at the single-particle level in real-time using high-resolution in situ Scanning Tunneling Microscopy...
December 12, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/29232508/programmable-payload-release-from-transient-polymer-microcapsules-triggered-by-a-specific-ion-co-activation-effect
#15
Shijia Tang, Liuyan Tang, Xiaocun Lu, Huiying Liu, Jeffrey S Moore
Stimuli-responsive materials activated by a pair of molecular or ionic species are of interest in the design of chemical logic gates and signal amplification schemes. There are relatively few ma-terials whose co-activated response has been well-characterized. Here, we demonstrate a specific ion co-activation (SICA) effect at the interfaces of transient polymer solids and liquid solu-tions. We found that depolymerization of the transient poly-mer, cyclic poly(phthalaldehyde) (cPPA), exhibited a SICA effect when the cPPA core-shell microcapsules were suspended in ion-containing acidic methanol solutions...
December 12, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29232507/interfacial-deposition-of-ru-ii-bipyridine-dicarboxylate-complexes-by-ligand-substitution-for-applications-in-water-oxidation-catalysis
#16
Degao Wang, Seth L Marquard, Ludovic Troian-Gautier, Matthew V Sheridan, Benjamin D Sherman, Ying Wang, Michael S Eberhart, Byron H Farnum, Christopher J Dares, Thomas J Meyer
Water oxidation is a critical step in artificial photosynthesis and provides the protons and electrons used in reduction reactions to make solar fuels. Significant advances have been made in the area of molecular water oxidation catalysts with a notable breakthrough in the development of Ru(II) complexes that use a planar "bda" ligand (bda is 2,2'-bipyridine-6,6'-dicarboxylate). These Ru(II)(bda) complexes show lower overpotentials for driving water oxidation making them ideal for light-driven applications with a suitable chromophore...
December 12, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29232494/reconstructing-relational-information
#17
Kevin M Horecka, Michael Dulas, Hillary Schwarb, Heather Lucas, Melissa Duff, Neal J Cohen
Hippocampal involvement in learning and remembering relational information has an extensive history, often focusing specifically on spatial information. In humans, spatial reconstruction (SR) paradigms are a powerful tool for evaluating an individuals' spatial-relational memory. In SR tasks, participants study locations of items in space and subsequently reconstruct the studied display after a short delay. Previous work has revealed that patients with hippocampal damage are impaired both in overall placement accuracy as well as on a specific measure of relational memory efficacy, "swaps" (i...
December 12, 2017: Hippocampus
https://www.readbyqxmd.com/read/29232482/validation-of-a-contextualized-assessment-of-smoking-behavior-in-students
#18
Helle Larsen, Elske Salemink, Ilva Grond, Reinout W Wiers, Kristen G Anderson
AIMS: The aim of this study was to validate an audio simulation of culture-specific social contexts associated with smoking to provide a medium for researchers to investigate social-contextual influences on tobacco use in the laboratory. METHODS: 81 students (34.6% men; n = 28) listened to five audio simulations of peer social contexts where offers to smoke tobacco were made (S-SIDE). For each social scenario, participants answered questions about their willingness to accept the offer to smoke and completed measures of smoking cognitions and tobacco use...
December 12, 2017: Addiction
https://www.readbyqxmd.com/read/29232477/behavior-driven-arc-expression-is-reduced-in-all-ventral-hippocampal-subfields-compared-to-ca1-ca3-and-dentate-gyrus-in-rat-dorsal-hippocampus
#19
M K Chawla, V L Sutherland, K Olson, B L McNaughton, C A Barnes
Anatomical connectivity and lesion studies reveal distinct functional heterogeneity along the dorsal-ventral axis of the hippocampus. The immediate early gene Arc is known to be involved in neural plasticity and memory and can be used as a marker for cell activity that occurs, for example, when hippocampal place cells fire. We report here, that Arc is expressed in a greater proportion of cells in dorsal CA1, CA3 and dentate gyrus (DG), following spatial behavioral experiences compared to ventral hippocampal subregions (dorsal CA1= 33%; ventral CA1= 13%; dorsal CA3 = 23%; ventral CA3 = 8%; and dorsal DG = 2...
December 12, 2017: Hippocampus
https://www.readbyqxmd.com/read/29232470/how-can-molecular-abnormalities-influence-our-clinical-approach
#20
W Wei, F Giulia, S Luffer, R Kumar, B Wu, M Tavallai, R T Bekele, M J Birrer
Background: Despite improvements in diagnostics and treatment, the clinical outcome of epithelial ovarian cancer remains poor over the last three decades. Recent high-throughput genomic studies have demonstrated ovarian cancer as a highly heterogeneous entity with distinctive molecular signatures among different or even within the same histotype. In this article, we review the molecular genetics of epithelial ovarian cancer and how they have been translated into modern clinical trials, as well as their implications in patient stratification for more targeted and personalized approaches...
November 1, 2017: Annals of Oncology: Official Journal of the European Society for Medical Oncology
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