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Thermal Imaging

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https://www.readbyqxmd.com/read/28637279/high-dimensional-multivariate-mediation-with-application-to-neuroimaging-data
#1
Oliver Y Chén, Ciprian Crainiceanu, Elizabeth L Ogburn, Brian S Caffo, Tor D Wager, Martin A Lindquist
Mediation analysis is an important tool in the behavioral sciences for investigating the role of intermediate variables that lie in the path between a treatment and an outcome variable. The influence of the intermediate variable on the outcome is often explored using a linear structural equation model (LSEM), with model coefficients interpreted as possible effects. While there has been significant research on the topic, little work has been done when the intermediate variable (mediator) is a high-dimensional vector...
June 15, 2017: Biostatistics
https://www.readbyqxmd.com/read/28636316/a-novel-melamine-o-phthalaldehyde-covalent-organic-frameworks-nanaosheets-enhancement-flame-retardant-and-mechanical-performances-of-thermoplastic-polyurethanes
#2
Xiaowei Mu, Jing Zhan, Xiaming Feng, Bihe Yuan, Shuilai Qiu, Lei Song, Yuan Hu
Covalent organic frameworks (COFs) nanosheets prepared from condensation reaction between melamine and o-phthalaldehyde are firstly prepared through ball milling and then incorporated into thermoplastic polyurethanes (TPU) by solution mixing. Transmission electron microscopy (TEM), X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared (FTIR) spectrometer are applied to characterize COFs nanosheets. It is observed apparently from TEM image that COFs nanosheets are obtained...
June 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28635625/soil-moisture-content-estimation-based-on-sentinel-1-and-auxiliary-earth-observation-products-a-hydrological-approach
#3
Dimitrios D Alexakis, Filippos-Dimitrios K Mexis, Anthi-Eirini K Vozinaki, Ioannis N Daliakopoulos, Ioannis K Tsanis
A methodology for elaborating multi-temporal Sentinel-1 and Landsat 8 satellite images for estimating topsoil Soil Moisture Content (SMC) to support hydrological simulation studies is proposed. After pre-processing the remote sensing data, backscattering coefficient, Normalized Difference Vegetation Index (NDVI), thermal infrared temperature and incidence angle parameters are assessed for their potential to infer ground measurements of SMC, collected at the top 5 cm. A non-linear approach using Artificial Neural Networks (ANNs) is tested...
June 21, 2017: Sensors
https://www.readbyqxmd.com/read/28635257/circular-bivalent-aptamers-enable-in-vivo-stability-and-recognition
#4
Hailan Kuai, Zilong Zhao, Liuting Mo, Hui Liu, Xiao-Xiao Hu, Ting Fu, Xiao-Bing Zhang, Weihong Tan
Aptamers are powerful candidates for molecular imaging and targeted therapy of cancer based on such appealing features as high binding affinity, high specificity, site-specific modification and rapid tumor penetration. However, aptamers are susceptible to plasma exonucleases in vivo. This seriously affects their in vivo applications. To overcome this key limitation, we herein report the design and development of circular bivalent aptamers. Systematic studies reveal that cyclization of aptamers can improve thermal stability, nuclease resistance and binding affinity...
June 21, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28633083/adsorption-of-cu-ii-pb-ii-and-cr-vi-from-aqueous-solutions-using-black-wattle-tannin-immobilized-nanocellulose
#5
Qinghua Xu, Yulu Wang, Liqiang Jin, Yu Wang, Menghua Qin
A novel nanocomposite based on black wattle (BW) tannin and nanocellulose was prepared and applied in heavy metal ions adsorptive removal from aqueous solutions. Firstly, nanocrystalline cellulose was oxidized by sodium periodate to get dialdehyde nanocellulose (DANC). BW tannin was then covalently immobilized onto DANC, which was used as both the matrix and crosslinker, to obtain tannin-nanocellulose (TNCC) composite. The resulting nanocomposite was characterized using FTIR, AFM, and TG. The successful immobilization was confirmed by the chromogenic reaction between FeCl3 and TNCC and FT-IR analysis...
June 17, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28631929/-13-c-dynamic-nuclear-polarization-using-a-trimeric-gd-3-complex-as-an-additive
#6
Peter Niedbalski, Christopher Parish, Qing Wang, Andhika Kiswandhi, Zahra Hayati, Likai Song, Lloyd Laporca Lumata
Dissolution dynamic nuclear polarization (DNP) is one of the most successful techniques that resolves the insensitivity problem in liquid-state nuclear magnetic resonance (NMR) spectroscopy and imaging (MRI) by amplifying the signal by several thousand-fold. One way to further improve the DNP signal is the inclusion of trace amounts of lanthanides in DNP samples doped with trityl OX063 free radical as the polarizing agent. In practice, stable monomeric gadolinium complexes such as Gd-DOTA or Gd-HP-DO3A are used as beneficial additives in DNP samples, further boosting the DNP-enhanced solid-state 13C polarization by a factor of 2 or 3...
June 20, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28629730/synergistic-antinociceptive-effect-of-a-calcium-channel-blocker-and-a-trpv1-blocker-in-an-acute-pain-model-in-mice
#7
Manuella R Palhares, Juliana F Silva, Marcio Junior S Rezende, Duana C Santos, Cláudio A Silva-Junior, Márcia H Borges, Juliano Ferreira, Marcus V Gomez, Célio J Castro Junior
AIMS: Extensive evidence supports a role for voltage-gated calcium channels (VGCC) and TRPV1 receptors in pain transmission and modulation. We investigated the profile of analgesic interaction between Phα1β toxin (a VGCC blocker) and SB366791 (selective TRPV1 antagonist) in a model of acute pain induced by capsaicin. Changes in body temperature induced by combination regimens were also evaluated. MAIN METHODS: Isobolographic approach with a fixed dose-ratio of combined drugs was used to determine whether antinociceptive interaction of Phα1β and SB366791 are subadditive, additive or synergic...
June 16, 2017: Life Sciences
https://www.readbyqxmd.com/read/28629084/facilitation-of-transscleral-drug-delivery-by-drug-loaded-magnetic-polymeric-particles
#8
Zeynab Mousavikhamene, Mohammad J Abdekhodaie, Hamid Ahmadieh
A unique method was used to facilitate ocular drug delivery from periocular route by drug loaded magnetic sensitive particles. Injection of particles in periocular space along the eye axis followed by application of magnetic field in front of the eye would trigger the magnetic polymeric particles to move along the direction of magnetic force and reside against the outer surface of the sclera. This technique prevents removal of drug in the periocular space, observed in conventional transscleral drug delivery systems and hence higher amount of drug can enter the eye in a longer period of time...
October 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28627529/the-effect-of-y-3-substitution-on-the-structural-optical-band-gap-and-magnetic-properties-of-cobalt-ferrite-nanoparticles
#9
T E P Alves, H V S Pessoni, A Franco
In this study we investigated the structural, optical band-gap, and magnetic properties of CoYxFe2-xO4 (0 ≤ x ≤ 0.04) nanoparticles (NPs) synthesized using a combustion reaction method without the need for subsequent heat treatment or the calcing process. The particle size measured from X-ray diffraction (XRD) patterns and transmission electron microscope (TEM) images confirms the nanostructural character in the range of 16-36 nm. The optical band-gap (Eg) values increase with the Y(3+) ion (x) concentration being 3...
June 19, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28626789/dataset-on-the-electronic-and-thermal-transport-properties-of-quaternary-compounds-of-pbte-0-95-x-pbse-x-pbs-0-05
#10
Dianta Ginting, Chan-Chieh Lin, Lydia Rathnam, Junpil Hwang, Woochul Kim, Rabih Al Rahal Al Orabi, Jong-Soo Rhyee
The data presented in this article are related to the research article entitled "High thermoelectric performance in pseudo quaternary compounds of (PbTe)0.95-x (PbSe)x(PbS)0.05 by simultaneous band convergence and nano precipitation" (Ginting et al., 2017) [1]. We measured electrical and thermal transport properties such as temperature-dependent Hall carrier density nH , Hall mobility μH , thermal diffusivity D, heat capacity Cp , and power factor S(2)σ in (PbTe)0.95-x (PbSe)x(PbS)0.05 (x=0.0, 0.05, 0.10, 0...
August 2017: Data in Brief
https://www.readbyqxmd.com/read/28626288/assessment-of-radicular-dentin-permeability-after-irradiation-with-co2-laser-and-endodontic-irrigation-treatments-with-thermal-imaging
#11
Heajin Cho, Robert C Lee, Kenneth H Chan, Daniel Fried
Previous studies have demonstrated that the permeability changes due to the surface modification of dentin can be quantified via thermal imaging during dehydration. The CO2 laser has been shown to remove the smear layer and disinfect root canals. Moreover, thermal modification via CO2 laser irradiation can be used to convert dentin into a highly mineralized enamel-like mineral. The purpose of this study is to evaluate the radicular dentin surface modification after CO2 laser irradiation by measuring the permeability with thermal imaging...
January 28, 2017: Proceedings of SPIE
https://www.readbyqxmd.com/read/28623700/heat-release-at-the-wetting-front-during-capillary-filling-of-cellulosic-micro-substrates
#12
A Terzis, E Roumeli, K Weishaupt, S Brack, H Aslannejad, J Groß, S M Hassanizadeh, R Helmig, B Weigand
Spontaneous imbibition in cellulosic materials is an expanding field of research due to the direct applicability in paper-based microfluidics. Here, we show experimentally, using simultaneous thermal and optical imaging that the temperature at the wetting front during capillary filling of paper is temporarily increased, even if the imbibed fluid and the cellulosic substrate are initially at isothermal conditions. Several liquids and two types of filter paper, characterised by scanning electron microscopy (SEM) and X-ray diffraction (XRD) analysis, were investigated demonstrating a significant temperature rise at the wetting front that cannot be neglected form the process...
June 8, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28623365/preparation-of-core-shell-structure-kclo4-al-cuo-nanoenergetic-material-and-enhancement-of-thermal-behavior
#13
Fan Yang, Xiaoli Kang, Jiangshan Luo, Zao Yi, Yongjian Tang
In this paper, a solvent/non-solvent synthetic approach has been utilized in preparing a new nanoenergetic material KClO4@Al/CuO by coating Al/CuO nanocomposites particles with a layer of nanoscale oxidizer KClO4. The coating process and mechanism are discussed. The composites of Al/CuO are uniformly mixed by mechanical ball milling process and CuO acts as a catalytic metallic oxide. The ternary mixtures KClO4@Al/CuO were characterized by X-ray diffraction (XRD) and the results reveal that after ball-milling and chemical synthesis process, the phase compositions haven't changed...
June 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28623319/fast-projection-matching-for-x-ray-tomography
#14
Chun-Chieh Wang, Cheng-Cheng Chiang, Biqing Liang, Gung-Chian Yin, Yi-Tse Weng, Liang-Chi Wang
X-ray 3D tomographic techniques are powerful tools for investigating the morphology and internal structures of specimens. A common strategy for obtaining 3D tomography is to capture a series of 2D projections from different X-ray illumination angles of specimens mounted on a finely calibrated rotational stage. However, the reconstruction quality of 3D tomography relies on the precision and stability of the rotational stage, i.e. the accurate alignment of the 2D projections in the correct three-dimensional positions...
June 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28623278/highly-conductive-nano-sized-magn%C3%A3-li-phases-titanium-oxide-tiox
#15
Aditya F Arif, Ratna Balgis, Takashi Ogi, Ferry Iskandar, Akihiro Kinoshita, Keitaro Nakamura, Kikuo Okuyama
Despite the strong recent revival of Magnéli phase TiOx as a promising conductive material, synthesis of Magnéli phase TiOx nanoparticles has been a challenge because of the heavy sintering nature of TiO2 at elevated temperatures. We have successfully synthesized chain-structured Magnéli phases TiOx with diameters under 30 nm using a thermal-induced plasma process. The synthesized nanoparticles consisted of a mixture of several Magnéli phases. A post-synthesis heat-treatment was performed to reduce the electrical resistivity without changing the particle morphology...
June 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28621708/breathing-analysis-using-thermal-and-depth-imaging-camera-video-records
#16
Aleš Procházka, Hana Charvátová, Oldřich Vyšata, Jakub Kopal, Jonathon Chambers
The paper is devoted to the study of facial region temperature changes using a simple thermal imaging camera and to the comparison of their time evolution with the pectoral area motion recorded by the MS Kinect depth sensor. The goal of this research is to propose the use of video records as alternative diagnostics of breathing disorders allowing their analysis in the home environment as well. The methods proposed include (i) specific image processing algorithms for detecting facial parts with periodic temperature changes; (ii) computational intelligence tools for analysing the associated videosequences; and (iii) digital filters and spectral estimation tools for processing the depth matrices...
June 16, 2017: Sensors
https://www.readbyqxmd.com/read/28619641/optimal-conditions-for-producing-bactericidal-sodium-hyaluronate-tio2-bionanocomposite-and-its-characterization
#17
Mohsen Safaei, Mojtaba Taran
In this research, the creation of optimum conditions for the formation of sodium hyaluronate-TiO2 bionanocomposite and its antibacterial effect on gram positive and gram negative bacteria was evaluated. The Fourier transform infrared spectroscopy spectra, scanning electron microscopy images and energy dispersive X-ray spectroscopy pattern confirmed the formation of the bionanocomposite. Thermogravimetric analysis and differential thermal analysis indicated that the thermal stability rate had significantly improved with formation of the bionanocomposite...
June 12, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28616808/crop-3d-a-lidar-based-platform-for-3d-high-throughput-crop-phenotyping
#18
Qinghua Guo, Fangfang Wu, Shuxin Pang, Xiaoqian Zhao, Linhai Chen, Jin Liu, Baolin Xue, Guangcai Xu, Le Li, Haichun Jing, Chengcai Chu
With the growing population and the reducing arable land, breeding has been considered as an effective way to solve the food crisis. As an important part in breeding, high-throughput phenotyping can accelerate the breeding process effectively. Light detection and ranging (LiDAR) is an active remote sensing technology that is capable of acquiring three-dimensional (3D) data accurately, and has a great potential in crop phenotyping. Given that crop phenotyping based on LiDAR technology is not common in China, we developed a high-throughput crop phenotyping platform, named Crop 3D, which integrated LiDAR sensor, high-resolution camera, thermal camera and hyperspectral imager...
December 6, 2017: Science China. Life Sciences
https://www.readbyqxmd.com/read/28615654/6-2-ghz-modulated-terahertz-light-detection-using-fast-terahertz-quantum-well-photodetectors
#19
Hua Li, Wen-Jian Wan, Zhi-Yong Tan, Zhang-Long Fu, Hai-Xia Wang, Tao Zhou, Zi-Ping Li, Chang Wang, Xu-Guang Guo, Jun-Cheng Cao
The fast detection of terahertz radiation is of great importance for various applications such as fast imaging, high speed communications, and spectroscopy. Most commercial products capable of sensitively responding the terahertz radiation are thermal detectors, i.e., pyroelectric sensors and bolometers. This class of terahertz detectors is normally characterized by low modulation frequency (dozens or hundreds of Hz). Here we demonstrate the first fast semiconductor-based terahertz quantum well photodetectors by carefully designing the device structure and microwave transmission line for high frequency signal extraction...
June 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28615086/the-automated-analysis-of-clustering-behaviour-of-piglets-from-thermal-images-in-response-to-immune-challenge-by-vaccination
#20
N J Cook, C J Bench, T Liu, B Chabot, A L Schaefer
An automated method of estimating the spatial distribution of piglets within a pen was used to assess huddling behaviour under normal conditions and during a febrile response to vaccination. The automated method was compared with a manual assessment of clustering activity. Huddling behaviour was partly related to environmental conditions and clock time such that more huddling occurred during the night and at lower ambient air temperatures. There were no positive relationships between maximum pig temperatures and environmental conditions, suggesting that the narrow range of air temperatures in this study was not a significant factor for pig temperature...
June 15, 2017: Animal: An International Journal of Animal Bioscience
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