keyword
MENU ▼
Read by QxMD icon Read
search

energy work

keyword
https://www.readbyqxmd.com/read/28432971/voids-padding-induced-further-enhancement-in-photocatalytic-performance-of-porous-graphene-like-carbon-nitride
#1
Guohui Dong, Dong Chen, Jianmin Luo, Yunqing Zhu, Yubin Zeng, Chuanyi Wang
Design of 2-Dimensional nanostructured photocatalyst is an effective way to improve the photocatalytic activity of its bulk counterpart. However, the remaining (or newborn) drawbacks, such as enlarged band gap and the surface recombination of photogenerated charge carries, extremely limited the practical application of nanosheeted photocatalysts in solar energy conversion. In this study, we demonstrated that the voids padding with NH4Cl can eliminate part of quantum size effect to reduce the band gap of nanosheeted carbon nitride...
April 12, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28432792/monte-carlo-study-of-the-chamber-phantom-air-gap-effect-in-a-magnetic-field
#2
Daniel J O'Brien, Gabriel O Sawakuchi
PURPOSE: The aim of this study was to examine the effect of sub-millimeter air gaps that may exist between an ionization chamber and solid phantoms when measurements are performed in a magnetic field. METHODS: Geant4 Monte Carlo simulations were performed using a model of a PTW 30013 Farmer chamber in a water phantom. Symmetrical and asymmetrical air gaps of various thicknesses were modeled surrounding the chamber, and the dose to the air cavity of the chamber was scored in each case...
April 22, 2017: Medical Physics
https://www.readbyqxmd.com/read/28432307/arsenic-metabolism-in-high-altitude-modern-stromatolites-revealed-by-metagenomic-analysis
#3
Daniel Kurth, Ariel Amadio, Omar F Ordoñez, Virginia H Albarracín, Wolfgang Gärtner, María E Farías
Modern stromatolites thrive only in selected locations in the world. Socompa Lake, located in the Andean plateau at 3570 masl, is one of the numerous extreme Andean microbial ecosystems described over recent years. Extreme environmental conditions include hypersalinity, high UV incidence, and high arsenic content, among others. After Socompa's stromatolite microbial communities were analysed by metagenomic DNA sequencing, taxonomic classification showed dominance of Proteobacteria, Bacteroidetes and Firmicutes, and a remarkably high number of unclassified sequences...
April 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28431761/-dependent-relative-effects-on-family-health
#4
M Eugenia Estrada Fernández, Ana I Gil Lacruz, Marta Gil Lacruz, Antonio Viñas López
OBJETIVES: The purpose of this work is to analyse the effects on informal caregiver's health and lifestyle when living with a dependent person at home. A comparison will be made between this situation and other situations involving commitment of time and energy, taking into account gender and age differences in each stage of the life cycle. DESIGN: Cross-sectional study analysing secondary data. SETTING: The method used for collecting information is the computer assisted personal interview carried out in selected homes by the Ministry of Health, Social Services and Equality...
April 18, 2017: Atencion Primaria
https://www.readbyqxmd.com/read/28431525/membrane-enriched-proteome-changes-and-prion-protein-expression-during-neural-differentiation-and-in-neuroblastoma-cells
#5
J A Macedo, D Schrama, I Duarte, E Tavares, J Renaut, M E Futschik, P M Rodrigues, E P Melo
BACKGROUND: The function of the prion protein, involved in the so-called prion diseases, remains a subject of intense debate and the possibility that it works as a pleiotropic protein through the interaction with multiple membrane proteins is somehow supported by recent reports. Therefore, the use of proteomic and bioinformatics combined to uncover cellular processes occurring together with changes in the expression of the prion protein may provide further insight into the putative pleiotropic role of the prion protein...
April 22, 2017: BMC Genomics
https://www.readbyqxmd.com/read/28431216/synthesis-and-loading-dependent-characteristics-of-nitrogen-doped-graphene-foam-carbon-nanotube-manganese-oxide-ternary-composite-electrodes-for-high-performance-supercapacitors
#6
Tao Cheng, Baozhi Yu, Linli Cao, Huiyun Tan, Xinghua Li, Xinliang Zheng, Weilong Li, Zhaoyu Ren, Jinbo Bai
The ternary composite electrodes, nitrogen-doped graphene foam/carbon nanotube/manganese dioxide (NGF/CNT/MnO2), have been successfully fabricated via chemical vapor deposition (CVD) and facile hydrothermal method. The morphologies of the MnO2 nanoflakes presented the loading-dependent characteristics and the nanoflake thickness could also be tuned by MnO2 mass loading in the fabrication process. The correlation between their morphology and electrochemical performance was systematically investigated by controlling MnO2 mass loading in the ternary composite electrodes...
April 18, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28431169/spa-ln-a-scoring-function-of-ligand-nucleic-acid-interactions-via-optimizing-both-specificity-and-affinity
#7
Zhiqiang Yan, Jin Wang
Nucleic acids have been widely recognized as potential targets in drug discovery and aptamer selection. Quantifying the interactions between small molecules and nucleic acids is critical to discover lead compounds and design novel aptamers. Scoring function is normally employed to quantify the interactions in structure-based virtual screening. However, the predictive power of nucleic acid-ligand scoring functions is still a challenge compared to other types of biomolecular recognition. With the rapid growth of experimentally determined nucleic acid-ligand complex structures, in this work, we develop a knowledge-based scoring function of nucleic acid-ligand interactions, namely SPA-LN...
April 20, 2017: Nucleic Acids Research
https://www.readbyqxmd.com/read/28430478/premelting-hcp-to-bcc-transition-in-beryllium
#8
Y Lu, T Sun, Ping Zhang, P Zhang, D-B Zhang, R M Wentzcovitch
Beryllium (Be) is an important material with wide applications ranging from aerospace components to x-ray equipment. Yet a precise understanding of its phase diagram remains elusive. We have investigated the phase stability of Be using a recently developed hybrid free energy computation method that accounts for anharmonic effects by invoking phonon quasiparticles. We find that the hcp → bcc transition occurs near the melting curve at 0<P<11  GPa with a positive Clapeyron slope of 41±4  K/GPa, which is more consistent with recent experimental measurements...
April 7, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28429736/single-step-one-pot-synthesis-of-tio2-nanosheets-doped-with-sulfur-on-reduced-graphene-oxide-with-enhanced-photocatalytic-activity
#9
Weilin Wang, Zhaofeng Wang, Jingjing Liu, Zhu Luo, Steven L Suib, Peng He, Guqiao Ding, Zhengguo Zhang, Luyi Sun
A hybrid photocatalyst based on anatase TiO2 was designed by doping TiO2 with sulfur and incorporating reduced graphene oxide (TiO2-S/rGO hybrid), with an aim to narrow the band gap to potentially make use of visible light and decrease the recombination of excitons, respectively. This TiO2-S/rGO hybrid was successfully synthesized using a one-pot hydrothermal method via single-step reaction. The structure and morphology of the TiO2-S/rGO hybrid catalyst was carefully characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), and X-ray photoelectron spectroscopy (XPS)...
April 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28429681/microwave-diathermy-in-physiotherapy-units-a-survey-on-spatial-and-time-heterogeneity-of-electromagnetic-field
#10
Andreas Andrikopoulos, Adam Adamopoulos, Ioannis Seimenis, Constantinos Miltiadis Koutsojannis
Microwave diathermy (MWD) is a therapeutic system that is in use for some decades now in all physiotherapy settings, according to national facility establishment regulations. Diathermy devices probably lack validity, as working time passes, introducing the need of control/reset of the device by qualified personnel, in order to maintain its effectiveness in sessions and accurately deliver the energy output the physiotherapist asks for. However, while in the field of physical therapy MWD has been a vital part for practicing the profession of physiotherapist, there is not a clear evidence of health burden due to incorrect usability...
April 21, 2017: Journal of Radiological Protection: Official Journal of the Society for Radiological Protection
https://www.readbyqxmd.com/read/28429541/toward-practical-high-energy-batteries-a-modular-assembled-oval-like-carbon-microstructure-for-thick-sulfur-electrodes
#11
Yusheng Ye, Feng Wu, Yuting Liu, Teng Zhao, Ji Qian, Yi Xing, Wanlong Li, Jiaqi Huang, Li Li, Qianming Huang, Xuedong Bai, Renjie Chen
The modular assembly of microstructures from simple nanoparticles offers a powerful strategy for creating materials with new functionalities. Such microstructures have unique physicochemical properties originating from confinement effects. Here, the modular assembly of scattered ketjen black nanoparticles into an oval-like microstructure via double "Fischer esterification," which is a form of surface engineering used to fine-tune the materials surface characteristics, is presented. After carbonization, the oval-like carbon microstructure shows promise as a candidate sulfur host for the fabrication of thick sulfur electrodes...
April 21, 2017: Advanced Materials
https://www.readbyqxmd.com/read/28428638/dynamic-behaviors-of-condensing-clusters-based-on-rayleigh-scattering-experiment
#12
Zhong Lan, Di Wang, Kejian Cao, Quan Xue, Xuehu Ma
Condensation is a common physical process which widely exists in natural phenomena and thermal energy systems. In a condensation process, cluster is considered as the important bridge between vapor body and condensates. However, limited by the minimum imaging dimension of traditional measurements, early experimental studies about initial stages of condensation process are not sufficient. This paper provides a powerful optical platform for the study of dynamic clusters process. Based on the Rayleigh law, optical experiments were firstly introduced to investigate the clusters spatial distribution close to and far from condensation surface...
April 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28428623/paper-strip-embedded-graphene-quantum-dots-a-screening-device-with-a-smartphone-readout
#13
Ruslan Álvarez-Diduk, Jahir Orozco, Arben Merkoçi
Simple, inexpensive and rapid sensing systems are very demanded for a myriad of uses. Intrinsic properties of emerging paper-based analytical devices have demonstrated considerable potential to fulfill such demand. This work reports an easy-to-use, low cost, and disposable paper-based sensing device for rapid chemical screening with a smartphone readout. The device comprises luminescent graphene quantum dots (GQDs) sensing probes embedded into a nitrocellulose matrix where the resonance energy transfer phenomenon seems to be the sensing mechanism...
April 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28427687/improved-adsorption-performance-of-nanostructured-composite-by-ultrasonic-wave-optimization-through-response-surface-methodology-isotherm-and-kinetic-studies
#14
Mehdi Dastkhoon, Mehrorang Ghaedi, Arash Asfaram, Alireza Goudarzi, Seyyedeh Maryam Mohammadi, Shaobin Wang
In this work, ultrasound-assisted adsorption of an anionic dye, sunset yellow (SY) and cationic dyes, malachite green (MG), methylene blue (MB) and their ternary dye solutions onto Cu@ Mn-ZnS-NPs-AC from water aqueous was optimized by response surface methodology (RSM) using the central composite design (CCD). The adsorbent was characterized using Field emission scanning electron microscopy (FESEM), X-ray diffraction (XRD), Energy-dispersive X-ray spectroscopy (EDX) and EDX mapping images. The effects of various parameters such as pH, sonication time, adsorbent mass and initial concentrations of SY, MG and MB were examined...
July 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28427307/molecular-dynamics-thermodynamic-and-mutational-binding-studies-for-tumor-specific-lyp-1-in-complex-with-p32
#15
Selin Seda Timur, Gözde Yalçın, Özge Çevik, Cenk Andaç, R Neslihan Gürsoy
Recent studies in tumor homing peptides have shown the specificity of LyP-1 (CGNKRTRGC) to tumor lymphatics. In this present work, we evaluated the possible interactions between cyclic LyP-1 and its receptor, p32, with molecular dynamics and docking studies in order to lead the design of novel LyP-1 derivatives, which could bind to p32 more effectively and perform enhanced antitumor effect. The total binding enthalpy energies have been obtained by MM-PBSA thermodynamic computations and the favorability of p32...
April 21, 2017: Journal of Biomolecular Structure & Dynamics
https://www.readbyqxmd.com/read/28427261/hot-hole-photoelectrochemistry-on-au-sio2-au-nanoparticles
#16
Andrea E Schlather, Alejandro Manjavacas, Adam Lauchner, Valeria Spolon Marangoni, Christopher J DeSantis, Peter Nordlander, Naomi J Halas
There is currently a worldwide need to develop efficient photocatalytic materials that can reduce the high energy cost of common industrial chemical processes. One possible solution focuses on metallic nanoparticles (NPs) that can act as efficient absorbers of light due to their surface plasmon resonance. Recent work indicates that small NPs, when photoexcited, may allow for efficient electron or hole transfer necessary for photocatalysis. Here we investigate the mechanisms behind hot hole carrier dynamics by studying the photo-driven oxidation of citrate ions on Au@SiO2@Au core-shell nanoparticles...
April 20, 2017: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/28427044/on-the-reverse-micelle-effect-in-liquid-scintillation-counting
#17
Youcef Nedjadi, Jean-Pascal Laedermann, François Bochud, Claude Bailat
This work looks into the tracks of electrons in nanoemulsive scintillating media using the Monte Carlo Geant4-DNA code which simulates event-by-event interactions of electrons in liquid water down to the eV, without resorting to the condensed history method. It demonstrates that the average number of micelles in which electrons deposit energy is quite large, increasing with their emission energy, decreasing with micelle size, and rising with micelle concentration. The probability of an electron ending its track in a micelle is found to be rather large and micelle size-dependent below 1keV, and approximating the aqueous fraction at higher energies...
April 12, 2017: Applied Radiation and Isotopes
https://www.readbyqxmd.com/read/28426701/exploratory-study-on-the-effect-of-osteoactivin-on-muscle-regeneration-in-a-rat-volumetric-muscle-loss-model
#18
Jinjin Ma, Andrew R Baker, Anthony Calabro, Kathleen A Derwin
Wounds causing extensive injury loss of muscle, also known as volumetric muscle loss (VML), are frequently associated with high-energy civilian trauma and combat-related extremity injuries. Currently, no effective clinical therapy is available for promoting de novo muscle tissue regeneration to restore muscle function following VML. Recent studies have shown evidence that osteoactivin (OA), a transmembrane glycoprotein, has the ability to prevent skeletal muscle atrophy in response to denervation. Therefore the objective of this study is to investigate the potential regenerative effect of OA embedded and delivered via a cross-linked gelatin hydrogel within a volumetric tibialis anterior muscle defect in a rat model...
2017: PloS One
https://www.readbyqxmd.com/read/28426221/charge-transport-in-nanostructured-materials-implementation-and-verification-of-constrained-density-functional-theory
#19
Matthew B Goldey, Nicholas P Brawand, Márton Vörös, Giulia Galli
The in silico design of novel complex materials for energy conversion requires accurate, ab initio simulation of charge transport. In this work, we present an implementation of constrained density functional theory (CDFT) for the calculation of parameters for charge transport in the hopping regime. We verify our implementation against literature results for molecular systems, and we discuss the dependence of results on numerical parameters and the choice of localization potentials. In addition, we compare CDFT results with those of other commonly used methods for simulating charge transport between nanoscale building blocks...
April 20, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/28425932/validation-of-a-novel-technique-and-evaluation-of-the-surface-free-energy-of-food
#20
Tugce Senturk Parreidt, Markus Schmid, Carolin Hauser
Characterizing the physical properties of a surface is largely dependent on determining the contact angle exhibited by a liquid. Contact angles on the surfaces of rough and irregularly-shaped food samples are difficult to measure using a contact angle meter (goniometer). As a consequence, values for the surface energy and its components can be mismeasured. The aim of this work was to use a novel contact angle measurement method, namely the snake-based ImageJ program, to accurately measure the contact angles of rough and irregular shapes, such as food samples, and so enable more accurate calculation of the surface energy of food materials...
April 20, 2017: Foods (Basel, Switzerland)
keyword
keyword
103539
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"