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https://www.readbyqxmd.com/read/28444316/oxytocin-facilitates-reciprocity-in-social-communication
#1
Franny B Spengler, Dirk Scheele, Nina Marsh, Charlotte Kofferath, Aileen Flach, Sarah Schwarz, Birgit Stoffel-Wagner, Wolfgang Maier, René Hurlemann
Synchrony in social groups may confer significant evolutionary advantages by improving group cohesion and social interaction. However, the neurobiological mechanisms translating social synchrony into refined social information transmission between interacting individuals are still elusive. In two successively conducted experiments involving a total of 199 healthy volunteers, we explored the involvement of the neuropeptide oxytocin (OXT) in reciprocal social interaction. First, we show that synchronous social interactions evoke heightened endogenous OXT release in dyadic partners...
April 21, 2017: Social Cognitive and Affective Neuroscience
https://www.readbyqxmd.com/read/28440903/triple-doped-monolayer-graphene-with-boron-nitrogen-aluminum-silicon-phosphorus-and-sulfur
#2
Pablo Andres Denis, Saif Ullah, Fernando Sato
We have investigated the structure, stability, electronic properties and chemical reactivity of X/B/N triple doped graphene systems, X= Al, Si, P and S, by means of density functional periodic calculations. For the triple doped graphene (TDG) systems studied the dopants prefer to be bonded instead of separated. In general, the XNB pattern is preferred, with the exception of sulfur which favors the SBN motif. The introduction of a third dopant results in a negligible decrease of the cohesive energies with respect to their dual doped graphene (DDG) counterparts...
April 25, 2017: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
https://www.readbyqxmd.com/read/28440839/refugee-health-and-rehabilitation-challenges-and-response
#3
Fary Khan, Bhasker Amatya
BACKGROUND: The current global refugee crisis poses major challenges in providing effective healthcare to refugees, particularly for non-communicable diseases (NCDs) management and disability. This article provides an overview of refugee health and potential challenges from the rehabilitation perspective. METHODS: A literature search (both academic and grey literature) was conducted using medical and health science electronic databases and internet search engines (2001-2016)...
April 21, 2017: Journal of Rehabilitation Medicine
https://www.readbyqxmd.com/read/28440380/viscosity-of-particulate-soap-films-approaching-the-jamming-of-2d-capillary-suspensions
#4
Yousra Timounay, Florence Rouyer
We compute the effective viscosity of particulate soap films thanks to local velocity fields obtained by Particle Image Velocimetry (PIV) during film retraction experiments. We identify the jamming of these 2D capillary suspensions at a critical particle surface fraction (≃0.84) where effective viscosity diverges. Pair correlation function and number of neighbors in contact or close to contact reveal the cohesive nature of this 2D capillary granular media. The experimental 2D dynamic viscosities can be predicted by a model considering viscous dissipation at the liquid interfaces induced by the motion of individual particles...
April 25, 2017: Soft Matter
https://www.readbyqxmd.com/read/28440030/-identification-of-target-genes-downstream-of-semaphorin6a-plexina2-signaling-in-zebrafish
#5
Sarah E Emerson, Riley M St Clair, Ashley L Waldron, Sierra R Bruno, Anna Duong, Heather E Driscoll, Bryan A Ballif, Sarah McFarlane, Alicia M Ebert
BACKGROUND: Semaphorin (Sema)/Plexin (Plxn) signaling is important for many aspects of neuronal development, however the transcriptional regulation imposed by this signaling pathway is unknown. Previously, we identified an essential role for Sema6A/PlxnA2 signaling in regulating proliferation and cohesion of retinal precursor cells (RPCs) during early eye development. This study used RNA isolated from control, Sema6A-deficient, and PlxnA2-deficient zebrafish embryos in a microarray analysis to identify genes that were differentially expressed when this signaling pathway was disrupted...
April 25, 2017: Developmental Dynamics: An Official Publication of the American Association of Anatomists
https://www.readbyqxmd.com/read/28439181/perspective-hope-for-health-equity
#6
EDITORIAL
George Rust
Times like these test the soul. We are now working for health equity in a time of overt, aggressive opposition. Yet, hope in the face of overwhelming obstacles is the force that has driven most of the world's progress toward equity and justice. Operationalizing real-world hope requires an affirmative vision, an expectation of success, broad coalitions taking action cohesively, and frequent measures of collective impact to drive rapid-cycle improvement.
2017: Ethnicity & Disease
https://www.readbyqxmd.com/read/28438891/a-second-wpl1-anti-cohesion-pathway-requires-dephosphorylation-of-fission-yeast-kleisin-rad21-by-pp4
#7
Adrien Birot, Karen Eguienta, Stéphanie Vazquez, Stéphane Claverol, Marc Bonneu, Karl Ekwall, Jean-Paul Javerzat, Sabine Vaur
Cohesin mediates sister chromatid cohesion which is essential for chromosome segregation and repair. Sister chromatid cohesion requires an acetyl-transferase (Eso1 in fission yeast) counteracting Wpl1, promoting cohesin release from DNA We report here that Wpl1 anti-cohesion function includes an additional mechanism. A genetic screen uncovered that Protein Phosphatase 4 (PP4) mutants allowed cell survival in the complete absence of Eso1. PP4 co-immunoprecipitated Wpl1 and cohesin and Wpl1 triggered Rad21 de-phosphorylation in a PP4-dependent manner...
April 24, 2017: EMBO Journal
https://www.readbyqxmd.com/read/28437618/state-of-the-art-calculations-of-sublimation-enthalpies-for-selected-molecular-crystals-and-their-computational-uncertainty
#8
Ctirad Červinka, Michal Fulem
A computational methodology for calculation of sublimation enthalpies of molecular crystals from first principles is developed and validated by comparison to critically evaluated literature experimental data. Temperature dependent sublimation enthalpies for a set of selected 22 molecular crystals in their low-temperature phases are calculated. The computational methodology consists in several building blocks based on high level electronic structure methods of quantum chemistry and statistical thermodynamics...
April 24, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/28435623/influence-of-nano-structured-alumina-coating-on-shear-bond-strength-between-y-tzp-ceramic-and-various-dual-cured-resin-cements
#9
Jung-Jin Lee, Jung-Yun Choi, Jae-Min Seo
PURPOSE: The purpose of this study was to evaluate the effect of nano-structured alumina surface coating on shear bond strength between Y-TZP ceramic and various dual-cured resin cements. MATERIALS AND METHODS: A total of 90 disk-shaped zirconia specimens (HASS CO., Gangneung, Korea) were divided into three groups by surface treatment method: (1) airborne particle abrasion, (2) tribochemicalsilica coating, and (3) nano-structured alumina coating. Each group was categorized into three subgroups of ten specimens and bonded with three different types of dual-cured resin cements...
April 2017: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/28435615/effect-of-zirconia-surface-treatment-using-nitric-acid-hydrofluoric-acid-on-the-shear-bond-strengths-of-resin-cements
#10
Jin Hyung Cho, Sun Jai Kim, June Sung Shim, Keun-Woo Lee
PURPOSE: The aim of this study was to compare the surface roughness of zirconia when using Zircos E etching system (ZSAT), applying a nitric acid-hydrofluoric acid compound as a pretreatment agent, and also to compare the shear bonding strength according to different resin cements. MATERIALS AND METHODS: ZSAT, air abrasion, and tribochemical silicacoating were applied on prepared 120 zirconia specimens (10 mm in diameter, 7 mm in height) using CAD/CAM. Each 12 specimens with 4 different resin cements (Panavia F 2...
April 2017: Journal of Advanced Prosthodontics
https://www.readbyqxmd.com/read/28435077/improving-blend-content-uniformity-via-dry-particle-coating-of-micronized-drug-powders
#11
Zhonghui Huang, Wannan Xiong, Kuriakose Kunnath, Sayani Bhaumik, Rajesh N Davé
Content uniformity of low dose blends with fine active pharmaceutical ingredients (API) is adversely impacted due to API agglomeration caused by high powder cohesion. Dry coating using high-intensity vibratory mixing is employed to reduce API cohesion and granular Bond number as well as agglomeration as predicted by contact models, hence improve blend content uniformity (CU). Micronized acetaminophen (mAPAP) (~10μm), a model API, was dry coated with nano-silica R972P (20nm), and mixed with Avicel 102. The amount of silica was varied from 0 to 2...
April 20, 2017: European Journal of Pharmaceutical Sciences
https://www.readbyqxmd.com/read/28435056/interfacial-shear-rheology-of-%C3%AE-lactoglobulin-bovine-submaxillary-mucin-layers-adsorbed-at-air-water-interface
#12
Hilal Y Çelebioğlu, Joanna Kmiecik-Palczewska, Seunghwan Lee, Ioannis S Chronakis
The interfacial rheological properties of solutions of β-lactoglobulin (BLG), as a model food compound, mixed with bovine submaxillary mucin (BSM), a major salivary protein, have been investigated. Time, frequency, stress sweep and flow measurements have been performed at different pHs (7.4, 5.0 and 3.0), to investigate the air/water interfacial properties. All protein layers (BLG, BSM, and BLG-BSM mixtures) formed an elastic network at the air/water interface with low frequency dependence of the interfacial modulus...
April 20, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28434650/global-kidney-health-2017-and-beyond-a-roadmap-for-closing-gaps-in-care-research-and-policy
#13
REVIEW
Adeera Levin, Marcello Tonelli, Joseph Bonventre, Josef Coresh, Jo-Ann Donner, Agnes B Fogo, Caroline S Fox, Ron T Gansevoort, Hiddo J L Heerspink, Meg Jardine, Bertram Kasiske, Anna Köttgen, Matthias Kretzler, Andrew S Levey, Valerie A Luyckx, Ravindra Mehta, Orson Moe, Gregorio Obrador, Neesh Pannu, Chirag R Parikh, Vlado Perkovic, Carol Pollock, Peter Stenvinkel, Katherine R Tuttle, David C Wheeler, Kai-Uwe Eckardt
The global nephrology community recognises the need for a cohesive plan to address the problem of chronic kidney disease (CKD). In July, 2016, the International Society of Nephrology hosted a CKD summit of more than 85 people with diverse expertise and professional backgrounds from around the globe. The purpose was to identify and prioritise key activities for the next 5-10 years in the domains of clinical care, research, and advocacy and to create an action plan and performance framework based on ten themes: strengthen CKD surveillance; tackle major risk factors for CKD; reduce acute kidney injury-a special risk factor for CKD; enhance understanding of the genetic causes of CKD; establish better diagnostic methods in CKD; improve understanding of the natural course of CKD; assess and implement established treatment options in patients with CKD; improve management of symptoms and complications of CKD; develop novel therapeutic interventions to slow CKD progression and reduce CKD complications; and increase the quantity and quality of clinical trials in CKD...
April 20, 2017: Lancet
https://www.readbyqxmd.com/read/28433017/correlation-of-the-fragility-of-metallic-liquids-with-the-high-temperature-structure-volume-and-cohesive-energy
#14
A K Gangopadhyay, C E Pueblo, R Dai, M L Johnson, R Ashcraft, D Van Hoesen, M Sellers, K F Kelton
The thermal expansion coefficients, structure factors, and viscosities of twenty-five equilibrium and supercooled metallic liquids have been measured using an electrostatic levitation (ESL) facility. The structure factor was measured at the Advanced Photon Source, Argonne, using the ESL. A clear connection between liquid fragility and structural and volumetric changes at high temperatures is established; the observed changes are larger for the more fragile liquids. It is also demonstrated that the fragility of metallic liquids is determined to a large extent by the cohesive energy and is, therefore, predictable...
April 21, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28432960/molecular-dynamic-simulations-on-tkx-50-rdx-cocrystal
#15
Shuling Xiong, Shusen Chen, Shaohua Jin
Dihydroxylammonium 5,5'-bistetrazole-1,1'-diolate (TKX-50) is a newly synthesized energetic material with excellent comprehensive properties. Cyclotrimethylenetrinitramine (RDX) is currently one of the most widely used energetic materials in the world. TKX-50 and RDX supercell models and TKX-50/RDX cocrystal model were constructed based on their crystal cell parameters and the formation mechanism of cocrystal, respectively, then they were simulated by molecular dynamics (MD) simulations. The maximum trigger bond (NNO2) length(Lmax), binding energy (Ebind), radial distribution function (RDF), cohesive energy density(CED) and mechanical properties were simulated at different temperatures based on the simulated equilibrium structures of the models...
March 19, 2017: Journal of Molecular Graphics & Modelling
https://www.readbyqxmd.com/read/28430190/tuning-underwater-adhesion-with-cation-%C3%AF-interactions
#16
Matthew A Gebbie, Wei Wei, Alex M Schrader, Thomas R Cristiani, Howard A Dobbs, Matthew Idso, Bradley F Chmelka, J Herbert Waite, Jacob N Israelachvili
Cation-π interactions drive the self-assembly and cohesion of many biological molecules, including the adhesion proteins of several marine organisms. Although the origin of cation-π bonds in isolated pairs has been extensively studied, the energetics of cation-π-driven self-assembly in molecular films remains uncharted. Here we use nanoscale force measurements in combination with solid-state NMR spectroscopy to show that the cohesive properties of simple aromatic- and lysine-rich peptides rival those of the strong reversible intermolecular cohesion exhibited by adhesion proteins of marine mussel...
May 2017: Nature Chemistry
https://www.readbyqxmd.com/read/28429807/prediction-of-a-new-bec-monolayer-with-perfectly-planar-tetracoordinate-carbons
#17
Chun-Sheng Liu, Hao-Hao Zhu, Xiao-Juan Ye, Xiao-Hong Yan
Recently, there has been a growing interest in exploring planar hypercoordinate carbons in two-dimensional nanostructures. However, atomic monolayers with ideal planar hypercoordinate carbon are quite rare due to the challenge in stabilizing the exotic motifs. We predicted a global minimum two-dimensional BeC monolayer using the global particle-swarm optimization method. Each carbon binds peripheral four atoms in the same plane, forming a perfectly planar tetracoordinate carbon moiety. The cohesive energy, phonon-spectrum and mechanical stability criteria confirm the stability of monolayer BeC...
April 21, 2017: Nanoscale
https://www.readbyqxmd.com/read/28427015/apparent-anisotropy-of-adhesive-bonds-with-weak-adhesion-and-non-destructive-evaluation-of-interfacial-properties
#18
Emmanuel Siryabe, Mathieu Rénier, Anissa Meziane, Jocelyne Galy, Michel Castaings
The present research attempts to non-destructively characterize mechanical properties, which are representative of the interfacial adhesion and bond line cohesion of adhesively bonded assemblies, using an ultrasonic method. Eight bonded samples made of two aluminium substrates and of an epoxy-based adhesive layer were manufactured: four in which the adhesive is fully cured (100%) and four in which crosslinking is partial (80%). For each level of curing, four different surface treatments were applied to the aluminium substrates before assembling, in order to vary the quality of adhesion...
April 9, 2017: Ultrasonics
https://www.readbyqxmd.com/read/28426125/cerclage-use-a-review-of-3-national-guidelines
#19
Jeffrey D Sperling, Joshua D Dahlke, Juan M Gonzalez
Importance: Preterm birth is a major contributor to perinatal morbidity and mortality. The most common intervention performed to improve perinatal outcomes for a woman experiencing cervical dilation in the second trimester without signs or symptoms of preterm labor is the cerclage. Objective: We sought to review and compare available national guidelines on cerclage use. Evidence Acquisition: We performed a descriptive review of 3 national guidelines on cerclage: The American Congress of Obstetricians and Gynecologists Practice Bulletin on "Cerclage for the Management of Cervical Insufficiency," Green-top Guideline from the Royal College of Obstetricians and Gynaecologists entitled "Cervical Cerclage," and the Society of Obstetricians and Gynaecologists of Canada Clinical Practice Bulletin entitled "Cervical Insufficiency and Cervical Cerclage...
April 2017: Obstetrical & Gynecological Survey
https://www.readbyqxmd.com/read/28424789/cognitive-behavioral-coping-illness-perception-and-family-adaptability-in-oncological-patients-with-a-family-history-of-cancer
#20
Roxana Postolica, Magdalena Iorga, Florin Dumitru Petrariu, Doina Azoicai
Aim. The study investigated the differences between patients with and without a family history of cancer regarding coping strategies, illness perception, and family adaptability to the disease. Material and Methods. A total of 124 patients diagnosed with cancer were included in the research (55 of them with a family history of cancer). The Cognitive Emotion Regulation Questionnaire, the Strategic Approach to Coping Scale, the Family Adaptability and Cohesion Scale, and the Illness Perception Questionnaire were applied...
2017: BioMed Research International
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