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https://www.readbyqxmd.com/read/28821071/on-the-use-of-ion-crosslinked-nanocellulose-hydrogels-for-wound-healing-solutions-physicochemical-properties-and-application-oriented-biocompatibility-studies
#1
Alex Basu, Jonas Lindh, Eva Ålander, Maria Strømme, Natalia Ferraz
Calcium ion-crosslinked nanofibrillated cellulose (NFC) hydrogels were investigated as potential materials for wound healing dressings. The physicochemical properties of the hydrogels were examined by rheology and water retention tests. Skin cells and monocytes were selected for application-oriented biocompatibility studies. The NFC hydrogels presented entangled fibrous networks and solid-like behavior. Water retention tests showed the material´s potential to maintain a suitable moist environment for different type of wounds...
October 15, 2017: Carbohydrate Polymers
https://www.readbyqxmd.com/read/28817652/metabolomics-reveals-an-entanglement-of-fasting-leptin-concentrations-with-fatty-acid-oxidation-and-gluconeogenesis-in-healthy-children
#2
Franca Fabiana Kirchberg, Stephanie Brandt, Anja Moß, Wolfgang Peissner, Wolfgang Koenig, Dietrich Rothenbacher, Hermann Brenner, Berthold Koletzko, Christian Hellmuth, Martin Wabitsch
BACKGROUND: Leptin and adiponectin communicate with organ systems in order to regulate energetic and metabolic homeostasis. Their different points of action have been well characterized; however, no study has investigated their interrelationship with the metabolism at the molecular level in vivo. OBJECTIVE: To examine the associations of leptin and adiponectin with the metabolic profile reflecting the intercellular and interorgan communication as well as activated metabolic pathways...
2017: PloS One
https://www.readbyqxmd.com/read/28816322/ultrasonication-enhanced-gelation-properties-of-a-versatile-amphiphilic-formamidine-based-gelator-exhibiting-both-organogelation-and-hydrogelation-abilities
#3
Jürgen Bachl, Diego Sampedro, Judith Mayr, David Díaz Díaz
We describe the preparation of a novel amphiphilic gelator built from a formamidine core, which is able to form a variety of physical organogels and hydrogels at concentrations ranging from 15 to 150 mg mL(-1). Interestingly, ultrasound treatment of isotropic solutions (i.e., gel-precursor) resulted in a remarkable enhancement of the gelation kinetics as well as the gelation scope and characteristic gel properties (e.g., critical gelation concentration, gel-to-sol transition temperature, viscoelastic moduli) in comparison to the heating-cooling protocol typically used to obtain supramolecular gels...
August 17, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28814804/a-unique-thermo-induced-gel-to-gel-transition-in-a-ph-sensitive-small-molecule-hydrogel
#4
Hongtao Xie, Mehran Asad Ayoubi, Wensheng Lu, Jide Wang, Jianbin Huang, Wei Wang
For a hydrogel based on a zwitterionic dendritic surfactant, we report an apparently unprecedented reversible temperature-induced gel-to-gel phase transition below the melting point of its alkyl chains, where the supramolecular self-assembly of surfactant molecules underwent a dramatic transformation from low-temperature surfactant bilayers to high-temperature entangled surfactant worm-like micelles.
August 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28812734/human-behaviour-as-a-long-term-ecological-driver-of-non-human-evolution
#5
REVIEW
Alexis P Sullivan, Douglas W Bird, George H Perry
Due to our intensive subsistence and habitat-modification strategies-including broad-spectrum harvesting and predation, widespread landscape burning, settlement construction, and translocation of other species-humans have major roles as ecological actors who influence fundamental trophic interactions. Here we review how the long-term history of human-environment interaction has shaped the evolutionary biology of diverse non-human, non-domesticated species. Clear examples of anthropogenic effects on non-human morphological evolution have been documented in modern studies of substantial changes to body size or other major traits in terrestrial and aquatic vertebrates, invertebrates, and plants in response to selective human harvesting, urbanized habitats, and human-mediated translocation...
February 21, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28812648/fungus-like-mycelial-fossils-in-2-4-billion-year-old-vesicular-basalt
#6
Stefan Bengtson, Birger Rasmussen, Magnus Ivarsson, Janet Muhling, Curt Broman, Federica Marone, Marco Stampanoni, Andrey Bekker
Fungi have recently been found to comprise a significant part of the deep biosphere in oceanic sediments and crustal rocks. Fossils occupying fractures and pores in Phanerozoic volcanics indicate that this habitat is at least 400 million years old, but its origin may be considerably older. A 2.4-billion-year-old basalt from the Palaeoproterozoic Ongeluk Formation in South Africa contains filamentous fossils in vesicles and fractures. The filaments form mycelium-like structures growing from a basal film attached to the internal rock surfaces...
April 24, 2017: Nature ecology & evolution
https://www.readbyqxmd.com/read/28812205/values-in-time-discounting
#7
Conrad Heilmann
Controversies about time discounting loom large in decisions about climate change. Prominently, a particularly controversial debate about time discounting in climate change decision-making has been conducted within climate economics, between the authors of Stern et al. (Stern review on the economics of climate change, 2006) and their critics (most prominently Dasgupta in Comments on the Stern review's economics of climate change, 2006; Tol in Energy Environ 17(6):977-981, 2006; Weitzman in J Econ Lit XLV:703-724, 2007; Nordhaus in J Econ Lit XLV:686-702, 2007)...
August 15, 2017: Science and Engineering Ethics
https://www.readbyqxmd.com/read/28811591/alteration-of-sheep-coat-color-pattern-by-disruption-of-asip-gene-via-crispr-cas9
#8
Xuemei Zhang, Wenrong Li, Chenxi Liu, Xinrong Peng, Jiapeng Lin, Sangang He, Xuejiao Li, Bing Han, Ning Zhang, Yangsheng Wu, Lei Chen, Liqin Wang, MaYila, Juncheng Huang, Mingjun Liu
Coat color is an important characteristic and economic trait in domestic sheep. Aiming at alteration of Chinese merino sheep coat color by genome manipulation, we disrupted sheep agouti signaling protein gene by CRISPR/Cas9. A total of seven indels were identified in 5 of 6 born lambs. Each targeted lamb happened at least two kinds of modifications, and targeted lambs with multiple modifications displayed variety of coat color patterns. Three lambs with 4 bp deletion showed badgerface with black body coat color in two lambs, and brown coat color with light ventral pigmentation in another one...
August 15, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28811243/preserving-the-commons-addressing-the-sustainable-use-of-antibiotics-through-an-economic-lens
#9
REVIEW
C M Morel, S E Edwards, S Harbarth
BACKGROUND: As the growth of antibiotic resistance is in large part due to the widespread use of antibiotics, every effort must be made to ensure their sustainable use. AIMS: This narrative review aims to assess the potential contribution of health economic analyses to sustainable use efforts. SOURCES: The work draws on existing literature and experience with health economic tools. CONTENT: The study examines some of the weaknesses in the health, regulatory, and industry arenas that could be contributing to inappropriate or sub-optimal prescribing of antibiotics and describes how economic analysis could be utilized to improve current practice by comparing both costs and health outcomes in order to maximize societal wellbeing over the longer-term...
August 12, 2017: Clinical Microbiology and Infection
https://www.readbyqxmd.com/read/28808262/generation-of-broadband-ultraviolet-frequency-entangled-photons-using-cavity-quantum-plasmonics
#10
Hisaki Oka
Application of quantum entangled photons is now extending to various fields in physics, chemistry and biology. In particular, in terms of application to molecular science, broadband ultraviolet frequency-entangled photons are desired because molecules inducing photochemical reactions of interest often have electronic transition energies in the ultraviolet region. Recent standard method for generating such entangled photons is a chirped quasi-phase-matching method, however this method is not suitable for the generation of ultraviolet frequency-entangled photons because it requires down-conversion of a photon with a wavelength shorter than ultraviolet into an entangled photon pair...
August 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28805946/racial-entanglements-and-sociological-confusions-repudiating-the-rehabilitation-of-integration
#11
Sivamohan Valluvan
In line with the broader nationalist advances currently remaking the Western political landscape, the concept of integration has witnessed a marked rehabilitation. Whilst many influential critiques of the sociology of integration are already available, this article contests the concept's renewed purchase through addressing its own internal incoherence. Based on research in Stockholm, this critique concerns the relationship between ethnic identity and cultural integration. It will be argued that integration and the production of difference are intertwined, entangled dualities, and far from being a benign entanglement, this duality is premised on the force and reach of everyday civic racisms...
August 14, 2017: British Journal of Sociology
https://www.readbyqxmd.com/read/28805190/driving-force-of-the-orbital-relevant-electronic-nematicity-in-fe-based-superconductors
#12
Tao Li, Yuehua Su
The electronic nematic responses in Fe-based superconductors have been observed ubiquitously in various experimental probes. One novel nematic character is the d-wave {\it bond} orbital-relevant nematic charge order which was firstly proposed by symmetry analysis and then conformed by angle-resolved photoemission spectroscopy. In this paper, we present a mechanism that the driving force of the orbital-relevant nematic charge order is the reduction of the large Hubbard energy in the particle-hole charge channel by virtual hopping processes...
August 14, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/28799474/-caught-between-a-rock-and-a-hard-place-between-discourses-of-empowerment-and-solicitude-danish-public-sector-service-professionals-discourses-of-nonattendance
#13
Michaela Hoej, Katrine Schepelern Johansen, Birgitte Ravn Olesen, Sidse Marie Arnfred
Nonattendance constitutes a profound challenge in public sector services targeting young adults with mental health difficulties. Therefore, researchers and practitioners are occupied with trying to resolve this. For clinicians to be aware of their own naturalized and perhaps inappropriate communicative practices, we investigated the established normative organizational logics behind explanations and strategies related to nonattendance. We performed a critical discourse analysis on material collected through participatory research throughout 2015...
September 2017: Qualitative Health Research
https://www.readbyqxmd.com/read/28799380/a-force-level-theory-of-the-rheology-of-entangled-rod-and-chain-polymer-liquids-i-tube-deformation-microscopic-yielding-and-the-nonlinear-elastic-limit
#14
Kenneth S Schweizer, Daniel M Sussman
We employ a first-principles-based, force-level approach to construct the anharmonic tube confinement field for entangled fluids of rigid needles, and also for chains described at the primitive-path (PP) level in two limiting situations where chain stretch is assumed to either be completely equilibrated or unrelaxed. The influence of shear and extensional deformation and polymer orientation is determined in a nonlinear elastic limit where dissipative relaxation processes are intentionally neglected. For needles and PP-level chains, a self-consistent analysis of transverse polymer harmonic dynamical fluctuations predicts that deformation-induced orientation leads to tube weakening or widening...
December 7, 2016: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28798408/erratum-bright-nanoscale-source-of-deterministic-entangled-photon-pairs-violating-bell-s-inequality
#15
Klaus D Jöns, Lucas Schweickert, Marijn A M Versteegh, Dan Dalacu, Philip J Poole, Angelo Gulinatti, Andrea Giudice, Val Zwiller, Michael E Reimer
A correction to this article has been published and is linked from the HTML version of this paper. The error has been fixed in the paper.
August 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28796448/matters-of-scale-sociology-in-and-for-a-complex-world
#16
Olli Pyyhtinen
The article proposes that if sociology is to make sense of a world that is ever more complex and complicated, it is important to reconsider the scale(s) of our relations and actions. Instead of assuming a nested vertical hierarchy of the micro to macro binary, scale should be treated not only as multiple, but also as something produced and sustained in practice. Coming to grips with the complex world, we are living in also necessitates attending to the conduits and connections between various sites, fields, and terrains to which our lives are entangled...
August 2017: Canadian Review of Sociology, Revue Canadienne de Sociologie
https://www.readbyqxmd.com/read/28795749/poly-styrene-co-butadiene-random-copolymer-thin-films-and-nanostructures-on-a-mica-surface-morphology-and-contact-angles-of-nanodroplets
#17
Jake McClements, Cosimo Buffone, Michael P Shaver, Khellil Sefiane, Vasileios Koutsos
The self-assembly of poly(styrene-co-butadiene) random copolymers on mica surfaces was studied by varying solution concentrations and polymer molecular weights. Toluene solutions of the poly(styrene-co-butadiene) samples were spin coated onto a mica surface and the resulting polymer morphology was investigated by atomic force microscopy. At higher concentrations, thin films formed with varying thicknesses; some dewetting was observed which depended on the molecular weight. Total dewetting did not occur despite the polymer's low glass transition temperature...
August 10, 2017: Soft Matter
https://www.readbyqxmd.com/read/28795571/transparent-healable-elastomers-with-high-mechanical-strength-and-elasticity-derived-from-hydrogen-bonded-polymer-complexes
#18
Yan Wang, Xiaokong Liu, Siheng Li, Tianqi Li, Yu Song, Zhandong Li, Wenke Zhang, Junqi Sun
It is challenging to develop healable elastomers with combined high mechanical strength and good elasticity. Herein, a simple strategy to develop high-performance elastomers that integrate high mechanical strength, enormous stretchability, good resilience, and healability is reported. Through simply complexing poly(acrylic acid) and poly(ethylene oxide) based on hydrogen-bonding interactions, transparent composite materials that perform as elastomers are generated. The as-prepared elastomers exhibit mechanical strength (true strength at break) and toughness (fracture energy) as high as 61 MPa and 22...
August 10, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28790430/a-simple-quantum-voting-scheme-with-multi-qubit-entanglement
#19
Peng Xue, Xin Zhang
We propose a simple quantum voting scenario with a set of pairs of particles in a multi-particle entangled state. This scenario is suitable for large scale general votings. We also provide a proof of security of our scheme against the most general type of attack by generalizing Shor and Preskill's proof of security of the other schemes.
August 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28790301/an-early-mechanical-coupling-of-planktonic-bacteria-in-dilute-suspensions
#20
Simon Sretenovic, Biljana Stojković, Iztok Dogsa, Rok Kostanjšek, Igor Poberaj, David Stopar
It is generally accepted that planktonic bacteria in dilute suspensions are not mechanically coupled and do not show correlated motion. The mechanical coupling of cells is a trait that develops upon transition into a biofilm, a microbial community of self-aggregated bacterial cells. Here we employ optical tweezers to show that bacteria in dilute suspensions are mechanically coupled and show long-range correlated motion. The strength of the coupling increases with the growth of liquid bacterial culture. The matrix responsible for the mechanical coupling is composed of cell debris and extracellular polymer material...
August 9, 2017: Nature Communications
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