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https://www.readbyqxmd.com/read/29351906/edc-impact-molecular-effects-of-developmental-fm-550-exposure-in-wistar-rat-placenta-and-fetal-forebrain
#1
Kylie R Baldwin, Brian Horman, Allison L Phillips, Susan L McRitchie, Scott Watson, Jocelin Deese-Spruill, Dereje Jima, Susan Sumner, Heather Stapleton, Heather Patisaul
Firemaster 550 (FM 550) is a flame retardant (FR) mixture that has become one of the most commonly used FRs in foam-based furniture and baby products. Human exposure to this commercial mixture, comprised of brominated and organophosphate components, is widespread. We have repeatedly shown that developmental exposure can lead to sex-specific behavioral effects in rats. Accruing evidence of endocrine disruption and potential neurotoxicity have raised concerns regarding the neurodevelopmental effects of FM 550 exposure, but the specific mechanisms of action remains unclear...
January 19, 2018: Endocrine Connections
https://www.readbyqxmd.com/read/29346872/border-crossing-model-for-the-diffusive-coarsening-of-two-dimensional-and-quasi-two-dimensional-wet-foams
#2
C D Schimming, D J Durian
For dry foams, the transport of gas from small high-pressure bubbles to large low-pressure bubbles is dominated by diffusion across the thin soap films separating neighboring bubbles. For wetter foams, the film areas become smaller as the Plateau borders and vertices inflate with liquid. So-called "border-blocking" models can explain some features of wet-foam coarsening based on the presumption that the inflated borders totally block the gas flux; however, this approximation dramatically fails in the wet or unjamming limit where the bubbles become close-packed spheres and coarsening proceeds even though there are no films...
September 2017: Physical Review. E
https://www.readbyqxmd.com/read/29346641/uncovering-behavioural-diversity-amongst-high-strength-pseudomonas-spp-surfactants-at-the-limit-of-liquid-surface-tension-reduction
#3
Kamaluddeen Kabir, Yusuf Y Deeni, Simona M Hapca, Luke Moore, Andrew J Spiers
Bacterial bio-surfactants have a wide range of biological functions and biotechnological applications. Previous analyses had suggested a limit to their reduction of aqueous liquid surface tensions (γMin), and here we confirm this in an analysis of 25 Pseudomonas spp. strains isolated from soil which produce high-strength surfactants that reduce surface tensions to 25.2 ± 0.1-26.5 ± 0.2 mN.m-1 (the surface tension of sterile growth medium and pure water was 52.9 ± 0.4 mN.m-1 and 72.1 ± 1.2 mN.m-1, respectively)...
January 16, 2018: FEMS Microbiology Letters
https://www.readbyqxmd.com/read/29345899/three-dimensional-graphene-foam-polymer-composite-with-superior-deicing-efficiency-and-strength
#4
Jenniffer Bustillos, Cheng Zhang, Benjamin Boesl, Arvind Agarwal
The adhesion of ice severely compromises the aerodynamic performance of aircrafts operating under critically low-temperature conditions to their surfaces. In this study, highly thermally and electrically conductive graphene foam polymer composite is fabricated. GrF - polydimethylsiloxane (PDMS) deicing composite exhibit superior deicing efficiency of 477 % and electrical conductivities of 500 S∙m-1 with only 0.1 vol. % Graphene foam addition as compared to other nanocarbon - based deicing systems. The three-dimensional interconnected architecture of GrF allows the effective deicing of surfaces by employing low power densities (0...
January 18, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29345704/hierarchical-core-shell-structures-of-p-ni-oh-2-rods-mno2-nanosheets-as-high-performance-cathode-materials-for-asymmetric-supercapacitors
#5
Kunzhen Li, Shikuo Li, Fangzhi Huang, Xin-Yao Yu, Yan Lu, Lei Wang, Hong Chen, Hui Zhang
The hierarchical porous structure with phosphorus-doped Ni(OH)2 (P-Ni(OH)2) rods as the core and MnO2 nanosheets as the shell is fabricated directly by growth on a three-dimensional (3D) flexible Ni foam (NF) via a two-step hydrothermal process. As a binder-free electrode material, this unique hybrid structure exhibits excellent electrochemical properties, including an ultrahigh areal capacitance of 5.75 F cm-2 at a current density of 2 mA cm-2 and great cyclic stability without capacitance loss at a current density of 20 mA cm-2 after 10 000 cycles...
January 18, 2018: Nanoscale
https://www.readbyqxmd.com/read/29344973/use-of-hysterosalpingo-foam-sonography-for-assessment-of-the-efficacy-of-essure-hysteroscopic-sterilization
#6
Maja Rosič, Branka Žegura, Sabina Vadnjal Đonlagić
OBJECTIVES: Hysterosalpingo-foam sonography (HyFoSy) has been suggested to be a possible less invasive alternative to hysterosalpingography (HSG), which is the reference standard for confirmation of tubal occlusion after Essure (Bayer AG, Leverkusen, Germany) hysteroscopic sterilization. The purpose of our study was to evaluate the accuracy of HyFoSy compared to HSG for confirmation of tubal occlusion after Essure hysteroscopic sterilization. METHODS: A prospective study included 90 patients who underwent Essure hysteroscopic sterilization...
January 18, 2018: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/29342129/fabrication-structural-characterization-and-uniaxial-tensile-properties-of-novel-sintered-multi-layer-wire-mesh-porous-plates
#7
Liuyang Duan, Zhaoyao Zhou, Bibo Yao
There is an increasing interest in developing porous metals or metallic foams for functional and structural applications. The study of the physical and mechanical properties of porous metals is very important and helpful for their application. In this paper, a novel sintered multilayer wire mesh porous plate material (WMPPs) with a thickness of 0.5 mm-3 mm and a porosity of 10-35% was prepared by winding, pressing, rolling, and subsequently vacuum sintering them. The pore size and total size distribution in the as-prepared samples were investigated using the bubble point method...
January 17, 2018: Materials
https://www.readbyqxmd.com/read/29341859/an-indoor-air-quality-evaluation-in-a-residential-retrofit-project-using-spray-polyurethane-foam
#8
Shen Tian, Scott Ecoff, John Sebroski, Jason Miller, Harold Rickenbacker, Melissa Bilec
Understanding of indoor air quality (IAQ) during and after spray polyurethane foam (SPF) application is essential to protect the health of both workers and building occupants. Previous efforts such as field monitoring, micro-chamber/spray booth emission studies and fate/transport modeling have been conducted to understand the chemical exposure of SPF and guide risk mitigation strategies. However, each type of research has its limitation and can only reveal partial information on the relationship between SPF and IAQ...
January 17, 2018: Journal of Occupational and Environmental Hygiene
https://www.readbyqxmd.com/read/29341380/tuning-the-adsorption-energy-of-methanol-molecules-along-ni-n-doped-carbon-phase-boundaries-via-the-mott-schottky-effect-for-highly-efficient-dehydrogenation-of-gas-phase-methanol
#9
Zhong-Hua Xue, Jing-Tan Han, Wei-Jie Feng, Qiu-Ying Yu, Xin-Hao Li, Markus Antonietti, Jie-Sheng Chen
Engineering the adsorption of molecules on active sites is an integral and challenging part for the design of highly efficient transition-metal-based catalysts for methanol dehydrogenation. Here we report a Mott-Schottky catalyst composed of Ni nanoparticles and tailorable nitrogen-doped carbon-foam (Ni/NCF) and thus tunable adsorption energy for highly efficient and selective dehydrogenation of gas-phase methanol to hydrogen and CO even under relatively high weight hourly space velocities (WHSV). Both theoretical and experimental results reveal the key role of the rectifying contact at the Ni/NCF boundaries in tailoring the electron density of Ni species and enhancing the absorption energies of methanol molecules, which leads to a remarkably high turnover frequency (TOF) value (356 mol methanol mol-1 Ni h-1 at 350 °C), 10-fold outpacing the bench-marked transition-metal catalysts in the literature...
January 17, 2018: Angewandte Chemie
https://www.readbyqxmd.com/read/29340432/capture-of-colloidal-particles-by-a-moving-microfluidic-bubble
#10
Irma Liascukiene, Gabriel Amselem, Deniz Z Gunes, Charles N Baroud
Foams can be stabilized for long periods by the adsorption of solid particles on the liquid-gas interfaces. Although such long-term observations are common, mechanistic descriptions of the particle adsorption process are scarce, especially in confined flows, in part due to the difficulty of observing the particles in the complex gas-liquid dispersion of a foam. Here, we characterise the adsorption of micron-scale particles onto the interface of a bubble flowing in a colloidal aqueous suspension within a microfluidic channel...
January 17, 2018: Soft Matter
https://www.readbyqxmd.com/read/29338197/modification-of-vapor-phase-concentrations-in-mos2-growth-using-a-nio-foam-barrier
#11
Yee-Fun Lim, Kumar Priyadarshi, Fabio Bussolotti, Pranjal Kumar Gogoi, Xiaoyang Cui, Ming Yang, Jisheng Pan, Shi Wun Tong, Shijie Wang, Stephen J Pennycook, Kuan Eng Johnson Goh, Andrew T S Wee, Swee Liang Wong, Dongzhi Chi
Single-layer molybdenum disulfide (MoS2) has attracted significant attention due to its unique electronic and physical properties with much effort invested towards obtaining large area high quality monolayer MoS2 films. In this work, we demonstrate a reactive barrier-based approach to achieve growth of highly homogeneous single layer MoS2 on sapphire through the use of a nickel oxide foam barrier during chemical vapor deposition. Due to the reactivity of the NiO barrier with MoO3, the concentration of precursors reaching the substrate and thus nucleation density is effectively reduced, allowing grain sizes of up to 170 µm and continuous monolayers on the centimeter length scale being obtained...
January 16, 2018: ACS Nano
https://www.readbyqxmd.com/read/29336190/a-cost-effectiveness-analysis-of-calcipotriol-plus-betamethasone-dipropionate-aerosol-foam-versus-gel-for-the-topical-treatment-of-plaque-psoriasis
#12
Peter Foley, Sinead Garrett, Lasse Ryttig
BACKGROUND: Calcipotriol 50 µg/g and betamethasone 0.5 mg/g dipropionate (Cal/BD) aerosol foam formulation provides greater effectiveness and improved patient preference compared with traditional Cal/BD formulations for the topical treatment of plaque psoriasis. OBJECTIVE: To determine the cost-effectiveness of Cal/BD foam compared with Cal/BD gel from the Australian perspective. METHODS: A Markov model was developed to evaluate the cost-effectiveness of topical Cal/BD foam and gel for the treatment of people with plaque psoriasis...
January 16, 2018: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/29336128/the-effect-of-prp-enriched-gelfoam-on-chronic-tympanic-membrane-perforation-a-double-blind-randomized-clinical-trial
#13
Masoumeh Saeedi, Mohammad Ajalloueian, Esmaeil Zare, Abolfazl Taheri, Jaleh Yousefi, Seyyed Mohammad Javad Mirlohi, Nasrin Mohammadi Aref, Mohammad Javid Saeedi, Mohammad Hossein Khosravi
OBJECTIVE: To evaluate the effect of PRP-enriched gelfoam on the healing of chronic TM perforation in comparison with gelfoam alone. METHODS: In this double-blind randomized clinical trial Patients with chronic tympanic membrane were randomly allocated to two groups; intervention group underwent tympanoplasty with platelet rich plasma (PRP)- enriched gel foams and control group underwent operation with conventional gel foams alone. Patients information was recorded 4 and 12 months after surgery...
December 1, 2017: International Tinnitus Journal
https://www.readbyqxmd.com/read/29335450/copper-sulfide-nanoparticles-as-a-photothermal-switch-for-trpv1-signaling-to-attenuate-atherosclerosis
#14
Wen Gao, Yuhui Sun, Michelle Cai, Yujie Zhao, Wenhua Cao, Zhenhua Liu, Guanwei Cui, Bo Tang
Atherosclerosis is characterized by the accumulation of lipids within the arterial wall. Although activation of TRPV1 cation channels by capsaicin may reduce lipid storage and the formation of atherosclerotic lesions, a clinical use for capsaicin has been limited by its chronic toxicity. Here we show that coupling of copper sulfide (CuS) nanoparticles to antibodies targeting TRPV1 act as a photothermal switch for TRPV1 signaling in vascular smooth muscle cells (VSMCs) using near-infrared light. Upon irradiation, local increases of temperature open thermo-sensitive TRPV1 channels and cause Ca2+ influx...
January 15, 2018: Nature Communications
https://www.readbyqxmd.com/read/29334147/uniform-lithium-nucleation-growth-induced-by-lightweight-nitrogen-doped-graphitic-carbon-foams-for-high-performance-lithium-metal-anodes
#15
Lin Liu, Ya-Xia Yin, Jin-Yi Li, Shu-Hua Wang, Yu-Guo Guo, Li-Jun Wan
The lithium metal anode has attracted soaring attention as an ideal battery anode. Unfortunately, nonuniform Li nucleation results in uncontrollable growth of dendritic Li, which incurs serious safety issues and poor electrochemical performance, hindering its practical applications. Herein, this study shows that uniform Li nucleation/growth can be induced by an ultralight 3D current collector consisting of in situ nitrogen-doped graphitic carbon foams (NGCFs) to realize suppressing dendritic Li growth at the nucleating stage...
January 15, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29334116/interface-engineering-of-a-ceo2-cu3p-nanoarray-for-efficient-alkaline-hydrogen-evolution
#16
Zao Wang, Huitong Du, Zhiang Liu, Hui Wang, Abdullah M Asiri, Xuping Sun
It is of great importance to design and develop highly active electrocatalysts for the hydrogen evolution reaction (HER) under alkaline conditions. In this work, we report the development of a CeO2-Cu3P nanoarray supported on nickel foam (CeO2-Cu3P/NF) as an excellent HER catalyst with the demand of an overpotential of only 148 mV to deliver a geometrical catalytic current density of 20 mA cm-2 in 1.0 M KOH. Remarkably, this catalyst also shows strong long-term electrochemical durability for at least 100 h with nearly 100% Faradaic efficiency...
January 15, 2018: Nanoscale
https://www.readbyqxmd.com/read/29333932/a-comparison-between-dacc-with-chlorhexidine-acetate-soaked-paraffin-gauze-and-foam-dressing-for-skin-graft-donor-sites
#17
Jun Won Lee, Seong Hoon Park, In Suck Suh, Hii Sun Jeong
OBJECTIVE: Retrograde infections often occur with excessive or incomplete drainage of exudate, or as a result of adherence of dressings to wounds. Dialkylcarbamoyl chloride (DACC) irreversibly binds to bacterial surfaces and physically removes bacteria when dressings are changed. Chlorhexidine acetate-soaked paraffin gauze provides a moist wound-healing environment. We hypothesise that when DACC is combined with chlorhexidine acetate-soaked paraffin gauze, wound healing times decrease...
January 2, 2018: Journal of Wound Care
https://www.readbyqxmd.com/read/29333685/co-oh-2-nanoparticle-encapsulating-conductive-nanowires-array-room-temperature-electrochemical-preparation-for-high-performance-water-oxidation-electrocatalysis
#18
Dan Wu, Yicheng Wei, Xiang Ren, Xuqiang Ji, Yiwei Liu, Xiaodong Guo, Zhiang Liu, Abdullah M Asiri, Qin Wei, Xuping Sun
It is highly desired but still remains challenging to design and develop a Co-based nanoparticle-encapsulated conductive nanoarray at room temperature for high-performance water oxidation electrocatalysis. Here, it is reported that room-temperature anodization of a Co(TCNQ)2 (TCNQ = tetracyanoquinodimethane) nanowire array on copper foam at alkaline pH leads to in situ electrochemcial oxidation of TCNQ- into water-insoluable TCNQ nanoarray embedding Co(OH)2 nanoparticles. Such Co(OH)2 -TCNQ/CF shows superior catalytic activity for water oxidation and demands only a low overpotential of 276 mV to drive a geometrical current density of 25 mA cm-2 in 1...
January 15, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29333419/evaluation-of-a-polyurethane-foam-dressing-impregnated-with-3-povidone-iodine-betafoam-in-a-rat-wound-model
#19
Jin Won Lee, Kyo Young Song
Purpose: The purpose of this study was to evaluate the efficacy of Betafoam in terms of wound healing and safety. Methods: Fifty-four male adult Sprague-Dawley rats (weight, 200-250 g) were used in the study. Full-thickness skin defects were created on the back of each rats. The rats were assigned to 6 groups according to the type of wound dressing used (n = 9 for each group): Betafoam, Allevyn-Ag, Mepilex-Ag, Medifoam silver, Polymem-Ag, and gauze. The wound size, histological findings, and amount of DNA on the changed dressings for each group were analyzed and compared...
January 2018: Annals of Surgical Treatment and Research
https://www.readbyqxmd.com/read/29333330/amorphous-cobalt-vanadium-oxide-as-a-highly-active-electrocatalyst-for-oxygen-evolution
#20
Laurent Liardet, Xile Hu
The water-splitting reaction provides a promising mechanism to store renewable energies in the form of hydrogen fuel. The oxidation half-reaction, the oxygen evolution reaction (OER), is a complex four-electron process that constitutes an efficiency bottleneck in water splitting. Here we report a highly active OER catalyst, cobalt vanadium oxide. The catalyst is designed on the basis of a volcano plot of metal-OH bond strength and activity. The catalyst can be synthesized by a facile hydrothermal route. The most active pure-phase material (a-CoVO x ) is X-ray amorphous and provides a 10 mA cm-2 current density at an overpotential of 347 mV in 1 M KOH electrolyte when immobilized on a flat substrate...
January 5, 2018: ACS Catalysis
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