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https://www.readbyqxmd.com/read/28822938/do-natural-biofilm-impact-nzvi-mobility-and-interactions-with-porous-media-a-column-study
#1
Marc Crampon, Jennifer Hellal, Christophe Mouvet, Guillaume Wille, Caroline Michel, Anke Wiener, Juergen Braun, Patrick Ollivier
Nanoparticles (NP) used as remediation agents for groundwater treatment may interact with biofilms naturally present, altering NP mobility and/or reactivity and thereby NP effectiveness. The influence of the presence of a multi species biofilm on the mobility of two types of zero-valent iron NP (nZVI; NANOFER 25S and optimized NANOFER STAR, NanoIron s.r.o. (Czech Republic)) was tested in laboratory experiments with columns mimicking aquifer conditions. Biofilms were grown in columns filled with sand in nitrate reducing conditions using groundwater from an industrial site as inoculum...
August 17, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28822534/hologram-the-future-of-medicine-from-star-wars-to-clinical-imaging
#2
Sundeep Mishra
No abstract text is available yet for this article.
July 2017: Indian Heart Journal
https://www.readbyqxmd.com/read/28820402/does-signaling-of-estrogen-related-receptors-affect-structure-and-function-of-bank-vole-leydig-cells
#3
P Pawlicki, A Milon, M Zarzycka, J Galas, W Tworzydlo, A Kaminska, L Pardyak, K Lesniak, A Pacwa, B Bilinska, E Gorowska-Wojtowicz, M Kotula-Balak
To get a deeper insight into the function of estrogen-related receptors (ERRs) and dissect underlying mechanism in Leydig cells, ERRs (type α, β and γ) were blocked or activated in testes of adult bank voles (Myodes glareolus) which show seasonal changes in the intratesticular sex hormones level. Both actively reproducing animals (long day conditions; LD) and those with regression of the reproductive system (short day conditions; SD) received intraperitoneal injections of selective ERRα antagonist 3-[4-(2,4-Bis-trifluoromethylbenzyloxy)-3-methoxyphenyl]-2-cyano-N-(5-trifluoromethyl-1,3,4-thiadiazol-2-yl)acrylamide (XCT 790) or selective ERRβ/ERRγ agonist N-(4-(Diethylaminobenzylidenyl)-N'-(4-hydroxybenzoyl)-hydrazine (DY131) (50 μ/kg bw; six doses every other day)...
June 2017: Journal of Physiology and Pharmacology: An Official Journal of the Polish Physiological Society
https://www.readbyqxmd.com/read/28819128/porous-polystyrene-monoliths-and-microparticles-prepared-from-core-cross-linked-star-ccs-polymers-stabilized-emulsions
#4
Qijing Chen, Ting Shi, Fei Han, Zihan Li, Chao Lin, Peng Zhao
A hydrophobic CCS polymer of poly(benzyl methacrylate) (PBzMA) was prepared in toluene by reversible addition-fragmentation chain transfer (RAFT)-mediated dispersion polymerization. The CCS polymer, with poly(benzyl methacrylate) as the arm and crosslinked N, N'-bis(acryloyl)cystamine (BAC) as the core, was confirmed by characterization with gel permeation chromatography (GPC) and nuclear magnetic resonance (NMR) spectroscopy. Three kinds of oils (toluene, anisole and styrene) were chosen to study the emulsification properties of PBzMA CCS polymer...
August 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28818942/an-unusual-white-dwarf-star-may-be-a-surviving-remnant-of-a-subluminous-type-ia-supernova
#5
S Vennes, P Nemeth, A Kawka, J R Thorstensen, V Khalack, L Ferrario, E H Alper
Subluminous Type Ia supernovae, such as the Type Iax-class prototype SN 2002cx, are described by a variety of models such as the failed detonation and partial deflagration of an accreting carbon-oxygen white dwarf star or the explosion of an accreting, hybrid carbon-oxygen-neon core. These models predict that bound remnants survive such events with, according to some simulations, a high kick velocity. We report the discovery of a high proper motion, low-mass white dwarf (LP 40-365) that travels at a velocity greater than the Galactic escape velocity and whose peculiar atmosphere is dominated by intermediate-mass elements...
August 18, 2017: Science
https://www.readbyqxmd.com/read/28817792/making-human-stars-a-new-method-to-generate-human-astrocytes
#6
Nicola J Allen
Human astrocytes are increasingly appreciated as important contributors to brain function in health and disease, but techniques to study them are limited. In this issue of Neuron, Sloan and colleagues (2017) describe a new 3D culture model that generates mature human astrocytes, opening the door to future studies of their function.
August 16, 2017: Neuron
https://www.readbyqxmd.com/read/28816318/a-soluble-star-shaped-silsesquioxane-cored-polymer-towards-novel-stabilization-of-ph-dependent-high-internal-phase-emulsions
#7
Yuxiu Xing, Jun Peng, Kai Xu, Shuxi Gao, Xuefeng Gui, Shengyuan Liang, Longfeng Sun, Mingcai Chen
A well-defined pH-responsive star-shaped polymer containing poly(N,N-dimethylaminoethyl methacrylate) (PDMA) arms and a cage-like methacryloxypropyl silsesquioxane (CMSQ-T10) core was used as an interfacial stabilizer for emulsions consisting of m-xylene and water. We explored the properties of the CMSQ/PDMA star-shaped polymer using the characteristic results of nuclear magnetic resonance (NMR) spectroscopy, size exclusion chromatography (SEC), dynamic light scattering (DLS), and zeta potential and conductivity measurements...
August 17, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28816248/vigorous-atmospheric-motion-in-the-red-supergiant-star-antares
#8
K Ohnaka, G Weigelt, K-H Hofmann
Red supergiant stars represent a late stage of the evolution of stars more massive than about nine solar masses, in which they develop complex, multi-component atmospheres. Bright spots have been detected in the atmosphere of red supergiants using interferometric imaging. Above the photosphere of a red supergiant, the molecular outer atmosphere extends up to about two stellar radii. Furthermore, the hot chromosphere (5,000 to 8,000 kelvin) and cool gas (less than 3,500 kelvin) of a red supergiant coexist at about three stellar radii...
August 16, 2017: Nature
https://www.readbyqxmd.com/read/28816088/new-biomarker-stars-for-traumatic-brain-injury
#9
Aleksandra Ichkova, Jerome Badaut
No abstract text is available yet for this article.
January 1, 2017: Journal of Cerebral Blood Flow and Metabolism
https://www.readbyqxmd.com/read/28815800/a-method-for-data-driven-exploration-to-pinpoint-key-features-in-medical-data-and-facilitate-expert-review
#10
Kristina Juhlin, Kristina Star, G Niklas Norén
PURPOSE: To develop a method for data-driven exploration in pharmacovigilance and illustrate its use by identifying the key features of individual case safety reports related to medication errors. METHODS: We propose vigiPoint, a method that contrasts the relative frequency of covariate values in a data subset of interest to those within one or more comparators, utilizing odds ratios with adaptive statistical shrinkage. Nested analyses identify higher order patterns, and permutation analysis is employed to protect against chance findings...
August 16, 2017: Pharmacoepidemiology and Drug Safety
https://www.readbyqxmd.com/read/28813629/the-impact-of-the-eda-pathway-on-tooth-root-development
#11
J M Fons Romero, H Star, R Lav, S Watkins, M Harrison, M Hovorakova, D Headon, A S Tucker
The Eda pathway ( Eda, Edar, Edaradd) plays an important role in tooth development, determining tooth number, crown shape, and enamel formation. Here we show that the Eda pathway also plays a key role in root development. Edar (the receptor) is expressed in Hertwig's epithelial root sheath (HERS) during root development, with mutant mice showing a high incidence of taurodontism: large pulp chambers lacking or showing delayed bifurcation or trifurcation of the roots. The mouse upper second molars in the Eda pathway mutants show the highest incidence of taurodontism, this enhanced susceptibility being matched in human patients with mutations in EDA-A1...
August 1, 2017: Journal of Dental Research
https://www.readbyqxmd.com/read/28813416/large-turbulent-reservoirs-of-cold-molecular-gas-around-high-redshift-starburst-galaxies
#12
E Falgarone, M A Zwaan, B Godard, E Bergin, R J Ivison, P M Andreani, F Bournaud, R S Bussmann, D Elbaz, A Omont, I Oteo, F Walter
Starburst galaxies at the peak of cosmic star formation are among the most extreme star-forming engines in the Universe, producing stars over about 100 million years (ref. 2). The star-formation rates of these galaxies, which exceed 100 solar masses per year, require large reservoirs of cold molecular gas to be delivered to their cores, despite strong feedback from stars or active galactic nuclei. Consequently, starburst galaxies are ideal for studying the interplay between this feedback and the growth of a galaxy...
August 14, 2017: Nature
https://www.readbyqxmd.com/read/28808984/multiple-gas-phase-conformations-of-a-synthetic-linear-poly-acrylamide-polymer-observed-using-ion-mobility-mass-spectrometry
#13
Jean R N Haler, Johann Far, Abdelhafid Aqil, Jan Claereboudt, Nick Tomczyk, Kevin Giles, Christine Jérôme, Edwin De Pauw
Ion mobility-mass spectrometry (IM-MS) has emerged as a powerful separation and identification tool to characterize synthetic polymer mixtures and topologies (linear, cyclic, star-shaped,…). Electrospray coupled to IM-MS already revealed the coexistence of several charge state-dependent conformations for a single charge state of biomolecules with strong intramolecular interactions, even when limited resolving power IM-MS instruments were used. For synthetic polymers, the sample's polydispersity allows the observation of several chain lengths...
August 14, 2017: Journal of the American Society for Mass Spectrometry
https://www.readbyqxmd.com/read/28807978/high-sensitivity-troponin-star-player-but-no-lone-hero
#14
Richard Body
No abstract text is available yet for this article.
August 14, 2017: Clinical Chemistry
https://www.readbyqxmd.com/read/28806724/one-star-rating-for-a-five-star-program-evaluating-hospital-compare
#15
J M Shapiro
OBJECTIVES: For healthcare systems of any size, it is important to minimize costs while maximizing outcomes. One idea of how to achieve these goals has been the reduction in hospital-related complications, including infection and surgical complications, among others. In the United States, policy makers recently adopted the 'Hospital Compare' program as a way to encourage consumers and improve hospitals. This article evaluates the effectiveness of this policy. STUDY DESIGN: This article uses an observed cohort study of most US hospitals across four different indices...
August 11, 2017: Public Health
https://www.readbyqxmd.com/read/28805747/what-is-nutritious-snack-food-a-comparison-of-expert-and-layperson-assessments
#16
Tamara Bucher, Christina Hartmann, Megan E Rollo, Clare E Collins
The term "nutritious" is being increasingly used by product manufacturers but the term is not currently regulated as a nutrition claim. It is unclear how lay consumers and experts define and interpret the term or how they evaluate the "nutritiousness" of various foods. To address this evidence gap, a mixed methods design was applied and both nutrition experts (n = 206) and lay participants (n = 269) provided definitions of the term "nutritious" and evaluated the "nutritiousness" of 20 different snack foods in a cross-sectional survey...
August 14, 2017: Nutrients
https://www.readbyqxmd.com/read/28805364/laser-direct-writing-of-tree-shaped-hierarchical-cones-on-a-superhydrophobic-film-for-high-efficiency-water-collection
#17
Meng Wang, Qian Liu, Haoran Zhang, Chuang Wang, Lei Wang, Bingxi Xiang, Yongtao Fan, Chuan Fei Guo, Shuangchen Ruan
Directional water collection has stimulated a great deal of interest because of its potential applications in the field of microfluidics, liquid transportation, fog harvesting, and so forth. There have been some bio or bioinspired structures for directional water collection, from one-dimensional spider silk to two-dimensional star-like patterns to three-dimensional Nepenthes alata. Here we present a simple way for the accurate design and highly controllable driving of tiny droplets: by laser direct writing of hierarchical patterns with modified wettability and desired geometry on a superhydrophobic film, the patterned film can precisely and directionally drive tiny water droplets and dramatically improve the efficiency of water collection with a factor of ∼36 compared with the original superhydrophobic film...
August 18, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28803458/neglect-and-aphasia-in-the-acute-phase-as-predictors-of-functional-outcome-seven-years-after-ischemic-stroke
#18
Joel Gerafi, Hans Samuelsson, Jo I Viken, Charlotte Blomgren, Lisbeth Claesson, Sakari Kallio, Christina Jern, Christian Blomstrand, Katarina Jood
BACKGROUND: Visuospatial inattention (VSI) and language impairment (LI) are often present early after stroke and associations with an unfavorable short-term functional outcome have been reported. The purpose of this study was to investigate if a screening of VSI and of LI as indicators of cortical symptoms early after stroke could predict long-term functional outcomes. METHODS: A consecutive cohort of 375 ischemic stroke patients was assessed for the occurrence of VSI, in median, 7 days after admission (interquartile range 5 days) using Star Cancellation Test (SCT) and for LI (within the first 7 days) with the language item in the Scandinavian Stroke Scale (SSS)...
August 12, 2017: European Journal of Neurology: the Official Journal of the European Federation of Neurological Societies
https://www.readbyqxmd.com/read/28800627/suppressive-effects-of-rxr-agonist-pa024-on-adrenal-cyp11b2-expression-aldosterone-secretion-and-blood-pressure
#19
Dai Suzuki, Akiko Saito-Hakoda, Ryo Ito, Kyoko Shimizu, Rehana Parvin, Hiroki Shimada, Erika Noro, Susumu Suzuki, Ikuma Fujiwara, Hiroyuki Kagechika, William E Rainey, Shigeo Kure, Sadayoshi Ito, Atsushi Yokoyama, Akira Sugawara
The effects of retinoids on adrenal aldosterone synthase gene (CYP11B2) expression and aldosterone secretion are still unknown. We therefore examined the effects of nuclear retinoid X receptor (RXR) pan-agonist PA024 on CYP11B2 expression, aldosterone secretion and blood pressure, to elucidate its potential as a novel anti-hypertensive drug. We demonstrated that PA024 significantly suppressed angiotensin II (Ang II)-induced CYP11B2 mRNA expression, promoter activity and aldosterone secretion in human adrenocortical H295R cells...
2017: PloS One
https://www.readbyqxmd.com/read/28800608/minimum-variance-rooting-of-phylogenetic-trees-and-implications-for-species-tree-reconstruction
#20
Uyen Mai, Erfan Sayyari, Siavash Mirarab
Phylogenetic trees inferred using commonly-used models of sequence evolution are unrooted, but the root position matters both for interpretation and downstream applications. This issue has been long recognized; however, whether the potential for discordance between the species tree and gene trees impacts methods of rooting a phylogenetic tree has not been extensively studied. In this paper, we introduce a new method of rooting a tree based on its branch length distribution; our method, which minimizes the variance of root to tip distances, is inspired by the traditional midpoint rerooting and is justified when deviations from the strict molecular clock are random...
2017: PloS One
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