keyword
MENU ▼
Read by QxMD icon Read
search

stand thinning

keyword
https://www.readbyqxmd.com/read/28326659/strings-of-porous-carbon-polyhedrons-as-self-standing-cathode-host-for-high-energy-density-lithium-sulfur-batteries
#1
Yazhi Liu, Gaoran Li, Jing Fu, Zhongwei Chen, Xinsheng Peng
Rational design of cathode hosts with high electrical conductivity and strong sulfur confinement is a great need for high-performance lithium-sulfur batteries. Herein, we report a self-standing, hybrid-nanostructured cathode host comprised of metal-organic framework (MOF)-derived porous carbon polyhedrons and carbon nanotubes (CNTs) for the significant improvement of both the electrode cyclability and energy density. The strong coupling of the intertwined CNTs and strung porous carbon polyhedrons as a binder-free thin film significantly enhances the long-range electronic conductivity and provides abundant active interfaces as well as robust electrode integrity for sulfur electrochemistry...
March 22, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28324243/fungal-keratitis-secondary-to-trametes-betulina-a-case-report-and-review-of-literature
#2
Joshua S Hardin, Deanna A Sutton, Nathan P Wiederhold, James Mele, Sunali Goyal
PURPOSE: We report the first case of human infection and keratitis secondary to Trametes betulina, a rare filamentous fungus. METHODS: Clinical examination including external and slit-lamp examination and corneal scrapings with microbiologic evaluation were performed on a patient with chronic allergic conjunctivitis, entropion and a long-standing corneal ulcer resistant to treatment. RESULTS: The culture from the corneal scraping revealed a basidiomycetous fungus which was submitted for identification...
March 21, 2017: Mycopathologia
https://www.readbyqxmd.com/read/28317341/metal-doping-for-enhancing-the-photoelectrochemical-behavior-of-lafeo3-photocathodes
#3
María Isabel Díez-García, Roberto Gómez
The development of tandem devices for water photosplitting requires finding photocathodic materials based on earth-abundant elements and showing long-term stability in aqueous electrolytes. Ternary metal oxides seem to be a viable option, among which perovskites stand out. In this context, transparent and compact LaFeO3 thin film electrodes have been prepared by sol-gel, both undoped and doped with metals (M) such as magnesium or zinc. Pristine electrodes support the development of cathodic photocurrents in 0...
March 20, 2017: ChemSusChem
https://www.readbyqxmd.com/read/28294335/a-novel-scale-down-cell-culture-and-imaging-design-for-the-mechanistic-insight-of-cell-colonisation-within-porous-substrate
#4
C M Gabbott, Z X Zhou, G X Han, T Sun
At the core of translational challenges in tissue engineering is the mechanistic understanding of the underpinning biological processes and the complex relationships among components at different levels, which is a challenging task due to the limitations of current tissue culture and assessment methodologies. Therefore, we proposed a novel scale-down strategy to deconstruct complex biomatrices into elementary building blocks, which were resembled by thin modular substrate and then evaluated separately in miniaturised bioreactors using various conventional microscopes...
March 15, 2017: Journal of Microscopy
https://www.readbyqxmd.com/read/28274090/facile-synthesis-of-free-standing-nio-mno2-core-shell-nanoflakes-on-carbon-cloth-for-flexible-supercapacitors
#5
Shuang Xi, Yinlong Zhu, Yutu Yang, Shulan Jiang, Zirong Tang
Free-standing NiO/MnO2 core-shell nanoflake structure was deposited on flexible carbon cloth (CC) used as electrode for high-performance supercapacitor (SC). The NiO core was grown directly on CC by hydrothermal process and the following annealing treatment. MnO2 thin film was then covered on NiO structures via a self-limiting process in aqueous solution of 0.5 M KMnO4 and 0.5 M Na2SO4 with a carbon layer serving as the sacrificial layer. Both the core and shell materials are good pseudocapacitive materials, the compounds of binary metal oxides can provide the synergistic effect of all individual constituents, and thus enhance the performance of SC electrode...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28262710/graphene-visualizes-the-ion-distribution-on-air-cleaved-mica
#6
Pantelis Bampoulis, Kai Sotthewes, Martin H Siekman, Harold J W Zandvliet, Bene Poelsema
The distribution of potassium (K(+)) ions on air-cleaved mica is important in many interfacial phenomena such as crystal growth, self-assembly and charge transfer on mica. However, due to experimental limitations to nondestructively probe single ions and ionic domains, their exact lateral organization is yet unknown. We show, by the use of graphene as an ultra-thin protective coating and scanning probe microscopies, that single potassium ions form ordered structures that are covered by an ice layer. The K(+) ions prefer to minimize the number of nearest neighbour K(+) ions by forming row-like structures as well as small domains...
March 6, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28239201/immersogeometric-cardiovascular-fluid-structure-interaction-analysis-with-divergence-conforming-b-splines
#7
David Kamensky, Ming-Chen Hsu, Yue Yu, John A Evans, Michael S Sacks, Thomas J R Hughes
This paper uses a divergence-conforming B-spline fluid discretization to address the long-standing issue of poor mass conservation in immersed methods for computational fluid-structure interaction (FSI) that represent the influence of the structure as a forcing term in the fluid subproblem. We focus, in particular, on the immersogeometric method developed in our earlier work, analyze its convergence for linear model problems, then apply it to FSI analysis of heart valves, using divergence-conforming B-splines to discretize the fluid subproblem...
February 1, 2017: Computer Methods in Applied Mechanics and Engineering
https://www.readbyqxmd.com/read/28236260/varying-rotation-lengths-in-northern-production-forests-implications-for-habitats-provided-by-retention-and-production-trees
#8
Adam Felton, Johan Sonesson, Urban Nilsson, Tomas Lämås, Tomas Lundmark, Annika Nordin, Thomas Ranius, Jean-Michel Roberge
Because of the limited spatial extent and comprehensiveness of protected areas, an increasing emphasis is being placed on conserving habitats which promote biodiversity within production forest. For this reason, alternative silvicultural programs need to be evaluated with respect to their implications for forest biodiversity, especially if these programs are likely to be adopted. Here we simulated the effect of varied rotation length and associated thinning regimes on habitat availability in Scots pine and Norway spruce production forests, with high and low productivity...
April 2017: Ambio
https://www.readbyqxmd.com/read/28228830/optic-disc-and-macular-imaging-in-blind-eyes-from-non-glaucomatous-optic-neuropathy-a-study-with-spectral-domain-optical-coherence-tomography
#9
Linda Hansapinyo, Andy C O Cheng, Noel C Y Chan, Carmen K M Chan
The purpose of this study was to determine and compare the optic disc and macular thickness measurements using two spectral-domain optical coherence tomography (SD-OCT) instruments in long-standing blind eyes diagnosed with non-glaucomatous optic neuropathies (NGON). A prospective observational case-series design was used. Twelve eyes from 12 NGON patients with no light perception for at least 6 months underwent optic disc and macular imaging with Cirrus HD-OCT and Spectralis OCT. The correlation between the peripapillary retinal nerve fibre layer (PRNFL) and macular ganglion cell layer and inner plexiform layer (GCL+IPL) thicknesses, and between the duration of no light perception (NLP) and PRNFL/GCL+IPL thicknesses were determined using Spearman's correlation analysis...
February 2017: Neuro-ophthalmology
https://www.readbyqxmd.com/read/28221803/effects-of-thickness-on-the-metal-insulator-transition-in-free-standing-vanadium-dioxide-nanocrystals
#10
Mustafa M Fadlelmula, Engin C Sürmeli, Mehdi Ramezani, T Serkan Kasırga
Controlling solid state phase transitions via external stimuli offers rich physics along with possibilities of unparalleled applications in electronics and optics. The well-known metal-insulator transition (MIT) in vanadium dioxide (VO2) is one instance of such phase transitions emerging from strong electronic correlations. Inducing the MIT using electric field has been investigated extensively for the applications in electrical and ultrafast optical switching. However, as the Thomas-Fermi screening length is very short, for considerable alteration in the material's properties with electric field induced MIT, crystals below 10 nm are needed...
March 8, 2017: Nano Letters
https://www.readbyqxmd.com/read/28208709/human-exposure-to-electromagnetic-fields-from-parallel-wireless-power-transfer-systems
#11
Feng Wen, Xueliang Huang
The scenario of multiple wireless power transfer (WPT) systems working closely, synchronously or asynchronously with phase difference often occurs in power supply for household appliances and electric vehicles in parking lots. Magnetic field leakage from the WPT systems is also varied due to unpredictable asynchronous working conditions. In this study, the magnetic field leakage from parallel WPT systems working with phase difference is predicted, and the induced electric field and specific absorption rate (SAR) in a human body standing in the vicinity are also evaluated...
February 8, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28208405/translational-diffusion-across-a-free-standing-smectic-film-above-the-bulk-smectic-a-isotropic-transition-temperature
#12
Izabela Śliwa, A V Zakharov
Calculations of translational self-diffusion coefficient in free-standing smectic films during a series of layer-thinning transitions as the temperature is raised above the bulk smectic-A-isotropic transition have been carried out. A molecular model based upon the random walk theory is applied for calculating the translational diffusion coefficient (TDC) D_{∥} across the smectic film both in the bulk of the film, as well as in the vicinity of the bounding surfaces. Calculations of D_{∥} require the set of the orientational and translational order parameters (OPs) which have been obtained by using the extended McMillan approach with anisotropic forces...
January 2017: Physical Review. E
https://www.readbyqxmd.com/read/28199123/free-standing-single-molecule-thick-crystals-consisting-of-linear-long-chain-polymers
#13
Renwei Liu, Suna Fan, Dongdong Xiao, Jin Zhang, Mengzhou Liao, Shansheng Yu, Fanling Meng, Baoli Liu, Lin Gu, Sheng Meng, Guangyu Zhang, Weitao Zheng, Shuxin Hu, Ming Li
Organic two-dimensional (2D) crystals are fundamentally important for development of future devices. Despite that more than a half of man-made products contain polymers, 2D crystals consisting of long linear chains have yet to be explored. Here we report on the fabrication of 2D polyaniline (PANI) crystals via rational electrochemical polymerization followed by liquid-phase exfoliation. The 2D PANI is molecularly thin (∼0.8 nm) and composed of PANI chains with a number-average molecular weight of ∼31 000...
March 8, 2017: Nano Letters
https://www.readbyqxmd.com/read/28195123/three-dimensional-surface-topography-of-graphene-by-divergent-beam-electron-diffraction
#14
Tatiana Latychevskaia, Wei-Hao Hsu, Wei-Tse Chang, Chun-Yueh Lin, Ing-Shouh Hwang
There are only a handful of scanning techniques that can provide surface topography at nanometre resolution. At the same time, there are no methods that are capable of non-invasive imaging of the three-dimensional surface topography of a thin free-standing crystalline material. Here we propose a new technique-the divergent beam electron diffraction (DBED) and show that it can directly image the inhomogeneity in the atomic positions in a crystal. Such inhomogeneities are directly transformed into the intensity contrast in the first-order diffraction spots of DBED patterns and the intensity contrast linearly depends on the wavelength of the employed probing electrons...
February 14, 2017: Nature Communications
https://www.readbyqxmd.com/read/28186213/multifunctional-biocompatible-and-ph-responsive-carbon-nanotube-and-graphene-oxide-tectomer-hybrid-composites-and-coatings
#15
Rosa Garriga, Izabela Jurewicz, Shayan Seyedin, Niki Bardi, Stella Totti, Brigitta Matta-Domjan, Eirini G Velliou, Mohammed A Alkhorayef, Vicente L Cebolla, Joselito M Razal, Alan B Dalton, Edgar Muñoz
Here we present a route for non-covalent functionalization of carboxylated multi-walled carbon nanotubes and graphene oxide with novel two-dimensional peptide assemblies. We show that self-assembled amino-terminated biantennary and tetraantennary oligoglycine peptides (referred to as tectomers) effectively coat carboxylated multi-walled carbon nanotubes and also strongly interact with graphene oxide due to electrostatic interactions and hydrogen bonding as the driving force, respectively. The resulting hybrids can be made into free-standing conducting composites or applied in the form of thin, pH-switchable bioadhesive coatings onto graphene oxide fibers...
February 10, 2017: Nanoscale
https://www.readbyqxmd.com/read/28182303/variable-effects-of-climate-on-forest-growth-in-relation-to-climate-extremes-disturbance-and-forest-dynamics
#16
Malcolm S Itter, Andrew O Finley, Anthony W D'Amato, Jane R Foster, John B Bradford
Changes in the frequency, duration, and severity of climate extremes are forecast to occur under global climate change. The impacts of climate extremes on forest productivity and health remain difficult to predict due to potential interactions with disturbance events and forest dynamics-changes in forest stand composition, density, size and age structure over time. Such interactions may lead to non-linear forest growth responses to climate involving thresholds and lag effects. Understanding how forest dynamics influence growth responses to climate is particularly important given stand structure and composition can be modified through management to increase forest resistance and resilience to climate change...
February 9, 2017: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/28180210/slip-on-a-particle-surface-as-the-possible-origin-of-shear-thinning-in-non-brownian-suspensions
#17
Martin Kroupa, Miroslav Soos, Juraj Kosek
Concentrated suspensions of non-Brownian particles exhibit a decrease in their viscosity with the increasing shear rate, a phenomenon called shear thinning. We present a possible explanation for this long-standing problem based on recent advances in the connection between the slip on the surface of the particles and the suspension viscosity. By expressing the energy dissipation between a pair of particles as a function of the local shear rate, it is possible to directly link the decrease of the viscosity with the shear rate to the slip of solvent molecules on the particle surface...
February 9, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28168702/biparietal-thinning-accidental-death-by-a-fall-from-standing-height
#18
Robert W Mann, Masahiko Kobayashi, Alan L Schiller
Biparietal thinning resulting in bilateral and symmetrical resorption and loss of thickness of the parietal bones is an uncommon to rare condition in the anthropological and clinical literature. This enigmatic condition of unknown etiology was first reported in the 18th century and has been variously described as a nonmetric trait, anatomical variant, anomaly, and pathology. Biparietal thinning presents grossly and radiographically as oval-shaped depressions in 0.25-0.8% and 0.4-0.5% of individuals and with a higher frequency in females over the age of 60 years...
February 7, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/28159717/generation-of-anti-inflammatory-macrophages-for-implants-and-regenerative-medicine-using-self-standing-release-systems-with-a-phenotype-fixing-cytokine-cocktail-formulation
#19
Vladimir Riabov, Fabián Salazar, Su Su Htwe, Alexandru Gudima, Christina Schmuttermaier, Julien Barthes, Helena Knopf-Marques, Harald Klüter, Amir M Ghaemmaghami, Nihal Engin Vrana, Julia Kzhyshkowska
The immediate tissue microenvironment of implanted biomedical devices and engineered tissues is highly influential on their long term fate and efficacy. The creation of a long-term anti-inflammatory microenvironment around implants and artificial tissues can facilitate their integration. Macrophages are highly plastic cells that define the tissue reactions on the implanted material. Local control of macrophage phenotype by long-term fixation of their healing activities and suppression of inflammatory reactions are required to improve implant acceptance...
February 1, 2017: Acta Biomaterialia
https://www.readbyqxmd.com/read/28155274/physically-cross-linked-homopolymer-ion-gels-for-high-performance-electrolyte-gated-transistors
#20
Hae Min Yang, Yeong Kwan Kwon, Soo Byoung Lee, Sangwon Kim, Kihyon Hong, Keun Hyung Lee
A new type of physically cross-linked solid polymer electrolyte was demonstrated by using a poly(vinylidene fluoride) (PVDF) homopolymer in a room-temperature ionic liquid. The physical origins of gelation, specific capacitance, ionic conductivity, mechanical property, and capacitive charge modulation in organic thin-film electrochemical transistors were investigated systematically. Gelation occurs through bridging phase-separated homopolymer crystals by polymer chains in the composite electrolyte, thereby forming a rubbery network...
March 2, 2017: ACS Applied Materials & Interfaces
keyword
keyword
53235
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"