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https://www.readbyqxmd.com/read/28227613/sleep-stage-classification-by-non-contact-vital-signs-indices-using-doppler-radar-sensors
#1
Masayuki Kagawa, Kazuki Suzumura, Takemi Matsui, Masayuki Kagawa, Kazuki Suzumura, Takemi Matsui, Kazuki Suzumura, Takemi Matsui, Masayuki Kagawa
Disturbed sleep has become more common in recent years. To improve the quality of sleep, undergoing sleep observation has gained interest as a means to resolve possible problems. In this paper, we evaluate a non-restrictive and non-contact method for classifying real-time sleep stages and report on its potential applications. The proposed system measures heart rate (HR), heart rate variability (HRV), body movements, and respiratory signals of a sleeping person using two 24-GHz microwave radars placed beneath the mattress...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227148/towards-a-multi-wavelength-spectroscopy-platform-for-blood-characterization-and-analysis
#2
Alireza Avakh Kisomi, Hamza Landari, Mounir Boukadoum, Amine Miled, Benoit Gosselin, Alireza Avakh Kisomi, Hamza Landari, Mounir Boukadoum, Amine Miled, Benoit Gosselin, Hamza Landari, Benoit Gosselin, Amine Miled, Mounir Boukadoum
Passing multiple light wavelengths through a blood sample makes it possible to investigate the presence and composition of cells, metabolytes and analytes such as blood cells, glucose, lactate and oxygen, providing valuable indications for diagnostic and health monitoring. In this paper, we present a test prototype of a multi-wavelength blood spectroscopy platform integrated with a microfluidic substrate to collect and convey blood samples through a series of micro-LEDs and a photo-detector. This spectroscopy platform is a proof of concept for a system that can collect absorbance and transmittance parameters of blood samples at several wavelengths within the visible and NIR spectrum, and transmit them wirelessly to a base station for real-time calculation and analysis...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226925/human-physical-condition-rf-sensing-at-thz-range
#3
A Vorobyov, E Daskalaki, C Hennemann, J-D Decotignie, A Vorobyov, E Daskalaki, C Hennemann, J-D Decotignie, E Daskalaki, C Hennemann, A Vorobyov, J-D Decotignie
The skin response to high radio frequency has been associated with the human physical condition and most prominently with the stress. The objective of this study is to investigate the possibility to detect mental and light physical stress through the measurement of skin reflectance in the mm-wave/sub-THz band. Two frequency bands have been considered, 75-110 GHz (Band-I) and 325-500 GHz (Band-II), while the measurements have been performed in the three different locations, the arm, the dorsal side of the hand and the fingertip...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28225261/structural-color-for-additive-manufacturing-3d-printed-photonic-crystals-from-block-copolymers
#4
Bret M Boyle, Tracy A French, Ryan Michael Pearson, Blaine G McCarthy, Garret M Miyake
The incorporation of structural color into 3D printed parts is reported, presenting an alternative to the need for pigments or dyes for colored parts produced through additive manufacturing. Thermoplastic build materials composed of dendritic block copolymers were designed, synthesized, and used to additively manufacture plastic parts exhibiting structural color. The reflection properties of the photonic crystals arise from the periodic nanostructure formed through block copolymer self-assembly during polymer processing...
February 22, 2017: ACS Nano
https://www.readbyqxmd.com/read/28225115/solvothermal-assisted-synthesis-of-self-assembling-tio2-nanorods-on-large-graphitic-carbon-nitride-sheets-with-their-anti-recombination-in-the-photocatalytic-removal-of-cr-vi-and-rhodamine-b-under-visible-light-irradiation
#5
Dingze Lu, Pengfei Fang, Wenhui Wu, Junqian Ding, Lulu Jiang, Xiaona Zhao, Chunhe Li, Minchen Yang, Yuanzhi Li, Dahai Wang
TiO2-based nanorods (TNRs) were self-assembled on large graphitic carbon nitride (g-C3N4) sheets via the solvothermal-assisted route. The results demonstrated that the effective anchoring of TNRs (a side length of ca. 200-300 nm) was highly dispersed on the surface of whole g-C3N4 sheets. The shift in the Ti 2p XPS core level spectrum indicated an increase in the net positive charge of the Ti ions, ensuring the formation of an interface between TNRs and g-C3N4. The charge transferred from g-C3N4 sheets to TNRs effectively prevented the recombination of excited charges, which is consistent with the significant quenching of PL...
February 22, 2017: Nanoscale
https://www.readbyqxmd.com/read/28224016/characterization-of-major-metabolites-of-polymethoxylated-flavonoids-in-pericarpium-citri-reticulatae-using-liver-microsomes-immobilized-on-magnetic-nanoparticles-coupled-with-uplc-ms-ms
#6
Jun Lei, Ying Xue, Yi-Ming Liu, Xun Liao
The peels of citrus fruits (Pericarpium Citri Reticulatae, PCR) have long been used in traditional Chinese medicines (TCMs). Polymethoxylated flavonoids (PMFs) were found to be the main components present in PCR extracts, but their metabolism remains unclear which restrain the utilization of this TCM. In the present work, rat liver microsomes were immobilized on magnetic nanoparticles (LMMNPs) for in vitro metabolic study on the whole PMFs of PCR. LMMNPs were characterized by transmission electron microscope and Fourier-transform infrared spectrum...
2017: Chemistry Central Journal
https://www.readbyqxmd.com/read/28222476/-positionpaper-on-telemonitoring-in-sleep-related-breathing-disorders
#7
W Randerath, M Bögel, C Franke, A Hellmann, B Jany, G Nilius, T Penzel, T Voshaar, A Wiater
The use of telemonitoring in the care of patients with Sleep-related Breathing Disorders (SBD) can enhance medical support significantly. Telemonitoring aims at helping physicians to detect therapy problems early and thus improve patients' therapy adherence. Diagnostics and therapy decisions in the telemonitoring process nevertheless remain the responsibility of sleep specialists. The selection of data monitored, their evaluation and resulting consequences fall to the physician, who makes decisions and prescribes therapy in consultation with the patient...
February 2017: Pneumologie
https://www.readbyqxmd.com/read/28221854/effects-of-fish-derived-biological-preservatives-on-cold-storage-of-grass-carp-ctenopharyngodon-idellus-fillets
#8
Tingting Li, Yang Jiang, Gaowei Jin, Qiancheng Zhao, Jianrong Li
Two kinds of fish-derived natural antimicrobial substances, protamine and catfish ( Clarias fuscus ) epidermal mucus extract (CEME), were evaluated for their effect on the quality of grass carp fillets. Fillets were atmosphere packaged in cast polypropylene bags and were stored at 4°C in a low-temperature incubator without light. Solutions (0.5%, wt/vol) of CEME and protamine were used for dip pretreatment, respectively. Bacteriological (aerobic plate count, Shewanella putrefaciens , Pseudomonas fluorescens ) and physicochemical (pH, total volatile basic nitrogen, K value, surface color, texture profiles, water distribution) parameters and volatile odor compounds were measured on days 0, 3, 6, 9, 12, and 15...
October 2016: Journal of Food Protection
https://www.readbyqxmd.com/read/28221804/semiconductor-seeded-nanorods-with-graded-composition-exhibiting-high-quantum-yield-high-polarization-and-minimal-blinking
#9
Ido Hadar, John Patrick Philbin, Yossef Efraim Panfil, Shany Neyshtadt, Itai Lieberman, Hagai Eshet, Sorin Lazar, Eran Rabani, Uri Banin
Seeded semiconductor nanorods represent a unique family of quantum confined materials that manifest characteristics of mixed dimensionality. They show polarized emission with high quantum yield and fluorescence switching under an electric field, features that are desirable for use in display technologies and other optical applications. So far, their robust synthesis has been limited mainly to CdSe/CdS heterostructures, thereby constraining the spectral tunability to the red region of the visible spectrum. Herein we present a novel synthesis of CdSe/Cd1-xZnxS seeded nanorods with radially graded composition that show bright and highly polarized green emission with minimal intermittency, as confirmed by ensemble and single nanorods optical measurements...
February 21, 2017: Nano Letters
https://www.readbyqxmd.com/read/28221773/air-quality-impacts-of-electrifying-vehicles-and-equipment-across-the-united-states
#10
Uarporn Nopmongcol, John Grant, Eladio Knipping, Mark Alexander, Rob Schurhoff, David Young, Jaegun Jung, Tejas Shah, Greg Yarwood
U.S.-wide air quality impacts of electrifying vehicles and off-road equipment are estimated for 2030 using 3-D photochemical air quality model and detailed emissions inventories. Electrification reduces tailpipe emissions and emissions from petroleum refining, transport, and storage, but increases electricity demand. The Electrification Case assumes approximately 17% of light duty and 8% of heavy duty vehicle miles traveled and from 17% to 79% of various off-road equipment types considered good candidates for electrification is powered by electricity...
February 21, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28221764/correlation-of-bandgap-reduction-with-inversion-response-in-si-gesn-high-k-metal-stacks
#11
Christian Schulte-Braucks, Keyvan Narimani, Stefan Glass, Nils von den Driesch, Jean-Michel Hartmann, Zoran Ikonic, Valeri V Afanas'ev, Qing-Tai Zhao, Siegfried Mantl, Dan Buca
The bandgap tunability of (Si)GeSn group IV semiconductors opens a new era in Si-technology. Depending on the Si/Sn contents, direct and indirect bandgaps in the range of 0.4 eV to 0.8 eV can be obtained, offering a broad spectrum of both photonic and low power electronic applications. In this work, we systematically studied capacitance-voltage characteristics of high-k/metal gate stacks formed on GeSn and SiGeSn alloys with Sn-contents ranging from 0 to 14 at.% and Si-contents from 0 to 10 at.% particularly focusing on the minority carrier inversion response...
February 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28221387/one-step-in-situ-synthesis-of-core-shell-structured-cr2o3-p-fibrous-phosphorus-hybrid-composites-with-highly-efficient-full-spectrum-response-photocatalytic-activities
#12
Hongpeng Zhou, Shixin Xu, Dingke Zhang, Shijian Chen, Junkai Deng
Making full use of solar energy and achieving high charge separation efficiency are critical factors for the photocatalysis technique. In this work, we report core-shell structured fibrous phosphorus (f-P) coated P-doped Cr2O3 (Cr2O3:P@f-P) hybrid composites with a strong optical absorption in the full region of 200-2600 nm. The Cr2O3:P@f-P hybrid composites exhibit a record photocatalytic efficiency under UV, visible and near-infrared light irradiation, demonstrating as promising photocatalysts for the full utilization of solar energy...
February 21, 2017: Nanoscale
https://www.readbyqxmd.com/read/28220587/the-relationship-between-different-dimensions-of-alcohol-use-and-the-burden-of-disease-an-update
#13
REVIEW
Jürgen Rehm, Gerhard E Gmel, Gerrit Gmel, Omer S M Hasan, Sameer Imtiaz, Svetlana Popova, Charlotte Probst, Michael Roerecke, Robin Room, Andriy V Samokhvalov, Kevin D Shield, Paul A Shuper
BACKGROUND AND AIMS: Alcohol use is a major contributor to injuries, mortality and the burden of disease. This review updates knowledge on risk relations between dimensions of alcohol use and health outcomes to be used in global and national Comparative Risk Assessments (CRAs). METHODS: Systematic review of reviews and meta-analyses on alcohol consumption and health outcomes attributable to alcohol use. For dimensions of exposure: volume of alcohol use, blood alcohol concentration and patterns of drinking, in particular heavy drinking occasions were studied...
February 20, 2017: Addiction
https://www.readbyqxmd.com/read/28220480/quality-and-stability-of-extemporaneous-pyridoxal-phosphate-preparations-used-in-the-treatment-of-paediatric-epilepsy
#14
Abeer H A Mohamed-Ahmed, Matthew P Wilson, Maedelyn Albuera, Ting Chen, Philippa B Mills, Emma J Footitt, Peter T Clayton, Catherine Tuleu
OBJECTIVES: To assess the pyridoxal 5'-phosphate (PLP) content and stability of extemporaneous PLP liquids prepared from dietary supplements used for the treatment of vitamin B6 -dependent epilepsy. METHODS: Pyridoxal 5'-phosphate liquids were prepared in accordance with the guidelines given to patients from marketed 50 mg PLP dietary capsules and tablets. The PLP content and its stability were evaluated under conditions resembling the clinical setting using reverse phase HPLC and mass spectrometry...
February 21, 2017: Journal of Pharmacy and Pharmacology
https://www.readbyqxmd.com/read/28220006/chiral-optical-fields-a-unified-formulation-of-helicity-scattered-from-particles-and-dichroism-enhancement
#15
Manuel Nieto-Vesperinas
We establish a general unified formulation which, using the optical theorem of electromagnetic helicity, shows that dichorism is a phenomenon arising in any scattering-or diffraction-process, elastic or not, of chiral electromagnetic fields by objects either chiral or achiral. It is shown how this approach paves the way to overcoming well-known limitations of standard circular dichroism, like its weak signal or the difficulties of using it with magnetodielectric particles. Based on the angular spectrum, representation of optical fields with only right circular or left circular plane waves, we introduce beams with transverse elliptic polarization and possessing a longitudinal component...
March 28, 2017: Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
https://www.readbyqxmd.com/read/28218869/child-behaviors-of-young-children-with-autism-spectrum-disorder-across-play-settings
#16
Megan MacDonald, Bridget Hatfield, Erica Twardzik
The hallmark characteristics of a diagnosis of autism spectrum disorder (ASD) are deficits in social communicative skills and the use of repetitive and/or stereotyped behaviors. In addition, children with ASD experience known motor-skill delays. The purpose of this study was to examine salient child behaviors of young children with and without ASD in 2 distinctly different play settings: a traditional social-play-based setting and a motor-behavior-based play setting. Child behavior (engagement toward parent, negativity, and attention) and dyad characteristics (connectedness) were examined in 2 distinctly different play settings...
January 2017: Adapted Physical Activity Quarterly: APAQ
https://www.readbyqxmd.com/read/28218505/theoretically-manipulating-quantum-dots-on-two-dimensional-2d-tio2-monolayer-for-effective-visible-light-absorption
#17
Ting Liao, Ziqi Sun, Shi Xue Dou
Low solar energy harvesting and conversion efficiency has become a major problem in solar energy science and engineering owing to the difficulty in capturing solar energy across the wide solar spectrum, especially in the visible light range. Inspired by the extraordinary properties of materials arising from decreased dimensions, in this study, we explore a nano-contact system formed by a two-dimensional (2D) TiO2 monolayer and II-VI semiconductor (CdX)13 (X = S, Se and Te) nanocages for engineering the visible light absorption...
February 20, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28216727/high-altitude-dermatology
#18
Lt Col G K Singh
Approximately, 140 million people worldwide live permanently at high altitudes (HAs) and approximately another 40 million people travel to HA area (HAA) every year for reasons of occupation, sports or recreation. In India, whole of Ladakh region, part of Northwest Kashmir, Northern part of Sikkim and Tenga valley of Arunachal are considered inhabited areas of HAA. The low quantity of oxygen, high exposure of ultraviolet (UV) light, very low humidity, extreme subzero temperature in winter, high wind velocity, make this region difficult for lowlanders as well as for tourists...
January 2017: Indian Journal of Dermatology
https://www.readbyqxmd.com/read/28215860/the-use-of-infrared-images-to-detect-ticks-in-cattle-and-proposal-of-an-algorithm-for-quantifying-the-infestation
#19
Jayme Garcia Arnal Barbedo, Claudia Cristina Gulias Gomes, Fernando Flores Cardoso, Robert Domingues, Jeferson Vidart Ramos, Concepta Margaret McManus
This paper presents a study on the use of low resolution infrared images to detect ticks in cattle. Emphasis is given to the main factors that influence the quality of the captured images, as well as to the actions that can increase the amount of information conveyed by these images. In addition, a new automatic method for analyzing the images and counting the ticks is introduced. The proposed algorithm relies only on color transformations and simple mathematical morphology operations, thus being easy to implement and computationally light...
February 15, 2017: Veterinary Parasitology
https://www.readbyqxmd.com/read/28215750/organizational-capacities-for-residential-care-homes-for-the-elderly-to-provide-culturally-appropriate-end-of-life-care-for-chinese-elders-and-their-families
#20
Sui-Ting Kong, Christine Meng-Sang Fang, Vivian Weiqun Lou
Developing culturally appropriate end-of-life care for Chinese elderly and families is not an endemic challenge for Hong Kong, but that of the Western countries with a noticeable trend of rising Chinese population. The particular development of Hong Kong healthcare system, which is currently the major provider of end-of-life care, makes Hong Kong a fruitful case for understanding the confluence of the West and the East cultures in end-of-life care practices. This study therefore aims at building our best practice to enhance the capacity of residential care homes in providing culturally appropriate end-of-life care...
January 2017: Journal of Aging Studies
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