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Yu Zhang, Xuejie Zhang, Haoran Zhang, Jianle Zhuang, Chaofan Hu, Yingliang Liu, Zhan-Chao Wu, Li Ma, Xiaojun Wang, Bingfu Lei
Herein, we present a simple strategy to enhance the stability of water-sensitive SrLiAl3 N4 :Eu2+ phosphor through embedding the phosphor particles into low-melting Sn-P-F-O glass using phosphor-in-glass (PiG) approach. After being immersed in water for 96 h, the emission intensity of the SrLiAl3 N4 :Eu2+ -PiG sample was maintained at 80% of its pristine intensity, indicating the moisture-resistance property of SrLiAl3 N4 :Eu2+ was significantly enhanced. Employing the narrow-band red-emitting SrLiAl3 N4 :Eu2+ -PiG sample and a blue COB (chip-on-board), a plant growing LED device was fabricated...
March 11, 2019: Journal of Colloid and Interface Science
Huan He, Xiaoxiao Gao, Xiaomin Wang, Xin Li, Xiaoxue Jiang, Zhehui Xie, Ke Ma, Jun Ma, Kazuo Umezawa, Yuyang Zhang
This study is aimed to further investigate the anti-atopic dermatitis (AD) activities of dehydroxymethylepoxyquinomicin (DHMEQ) ointment and compare its effect with that of tacrolimus ointment based on the previous study that DHMEQ improves AD-like lesions. AD were induced by 2,4-dinitroclilorobenzene/oxazolone (DNCB/OX) repeatedly on the ears of BABL/C mice while medical tape was additionally used to disrupt stratum corneum in order to exacerbate the lesions. The mice were randomly divided into groups, which are normal, vehicle, DHMEQ (0...
March 13, 2019: International Immunopharmacology
Xingyu Lu, Chao Lu, Weixiang Yu, Liang Qiao, Shangyu Liang, Alan Pak Tao Lau, Nan Chi
Linear and nonlinear impairments severely limit the transmission performance of high-speed visible light communication systems. Neural network-based equalizers have been applied to optical communication systems, which enables significantly improved system performance, such as transmission data rate and distance. In this paper, a memory-controlled deep long short-term memory (LSTM) neural network post-equalizer is proposed to mitigate both linear and nonlinear impairments in pulse amplitude modulation (PAM) based visible light communication (VLC) systems...
March 4, 2019: Optics Express
Benjamin L Allen
Lethal control remains an important approach to mitigating the impacts of predators on livestock and threatened fauna. This occurs in Australia, where wild dogs (Canis familiaris) and European red foxes (Vulpes vulpes) are commonly subjected to broad-scale poisoning programs. Ongoing refinement of lethal tools has led to the recent development of manufactured poison baits containing para-aminopropiophenone (PAPP). Canid pest ejectors (CPEs) have also been recently registered for use and are a target-specific poison delivery device; yet, there has been no confirmation that PAPP delivered via ejectors will provide similar efficacy to PAPP delivered via manufactured baits...
March 14, 2019: Environmental Science and Pollution Research International
M Fernández-Guarino, P Fonda Pascual, P Lizuain Gomez, A Harto Castaño, P Jaén Olasolo
INTRODUCTION: Conventional photodynamic therapy (PDT) with methylaminolevulinic acid (MAL) and daylight PDT have demonstrated similar efficacy in the treatment of actinic keratosis (AK). The reason for the use of daylight is to reduce pain during illumination but daylight has the limitation of the weather conditions. The difference in the doses of red light applied between these two methods suggest that an intermediate dose with red light conventional illumination could be effective in PDT of AK...
March 13, 2019: Journal of the European Academy of Dermatology and Venereology: JEADV
Ewa Guzniczak, Melanie Jimenez, Matthew Irwin, Oliver Otto, Nicholas Willoughby, Helen Bridle
Advances in cellular therapies have led to the development of new approaches for cell product purification and formulation, e.g., utilizing cell endogenous properties such as size and deformability as a basis for separation from potentially harmful undesirable by-products. However, commonly used additives such as Pluronic F-68 and other poloxamer macromolecules can change the mechanical properties of cells and consequently alter their processing. In this paper, we quantified the short-term effect of Pluronic F-68 on the mechanotype of three different cell types (Jurkat cells, red blood cells, and human embryonic kidney cells) using real-time deformability cytometry...
July 2018: Biomicrofluidics
David A Houlden, Chantal A Turgeon, Nathaniel S Amyot, Idara Edem, John Sinclair, Charles Agbi, Thomas Polis, Fahad Alkherayf
OBJECTIVE: To determine the relationship between intraoperative flash visual evoked potential (FVEP) monitoring and visual function. METHODS: Intraoperative FVEPs were recorded from electrodes placed in the scalp overlying the visual cortex (Oz) after flashing red light stimulation delivered by Cadwell LED stimulating goggles in 89 patients. Restrictive filtering (typically 10-100 Hz), optimal reject window settings, mastoid reference site, total intravenous anesthetic (TIVA), and stable retinal stimulation (ensured by concomitant electroretinogram [ERG] recording) were used to enhance FVEP reproducibility...
March 14, 2019: Canadian Journal of Neurological Sciences. le Journal Canadien des Sciences Neurologiques
Anand Vinekar, Shyam Vasudeva Rao, Seema Murthy, Chaitra Jayadev, Mangat R Dogra, Anshuman Verma, Bhujang Shetty
Purpose: To report the technical aspects, systemic, and ocular safety of a novel, low-cost, wide-field, infant retinal camera for use on premature infants. Methods: The device, the "3nethra Neo" (Neo) is a 120° portable, contact, wide-field, unibody camera, with a CMOS sensor (2040 × 2040 resolution) and a warm light-emitting diode (LED) illumination source. The Neo was used to image 140 awake, preterm infants between postmenstrual age (PMA) of 28 to 37 weeks, undergoing retinopathy of prematurity (ROP) screening...
March 2019: Translational Vision Science & Technology
A Lesage, D Timmerman, T Inaba, T Gregorkiewicz, Y Fujiwara
Eu-doped GaN is a promising material for the active layer in red light emitting diodes. Although the output power of LEDs based on GaN:Eu has been increasing by a combination of structural and growth optimizations, there is still a significant limitation resulting from a poor light extraction efficiency, typical for high refractive index materials. Here we studied nanostructuring of the top of the optical active layer by nano-cubes for enhancement of the light extraction efficiency, and its effect on the optical emission characteristics...
March 12, 2019: Scientific Reports
Haishan Wu, Shan Lin, Ruina Wang, Xu You, Yuwu Chi
Perovskite quantum dots (PQDs) with high quantum efficiency and broad spectral tunability are promising luminescent materials and show potential applications in light-emitting diodes (LEDs). However, PQDs degrade rapidly in atmosphere moisture due to their easy hydrolysis and undergo undesirable spectral changes associated with ion exchanges. Herein, we encapsulated blue, green and red fluorescence-emitting all-inorganic PQDs respectively with hydrophobic solid paraffin to obtain multi-color luminescent paraffin-PQD composites (P-PQDs)...
March 12, 2019: Nanoscale
Shengnan Shi, Jin Xu, Qianzhi Zeng, Jiaxin Liu, Yuan Hou, Bei Jiang
The impacts of electric field applied in MBR (EMBR) for treating phenol wastewater and membrane antifouling mechanism were systematically investigated. Phenol degradation rate increased from 0 to 0.8 V/cm, while decreased from 0.8 to 1.75 V/cm, which significantly positively correlated with key enzymes. The membrane fouling rate of EMBR gradually slowed down with voltage increasing. The applied voltage significantly reduced EPS contents, and altered its compositions probably due to H2 O2 oxidation, which were the major reasons for membrane antifouling...
February 25, 2019: Bioresource Technology
Sophia Chikhladze, Shota Kupreishvili, Kristina Korsake, Olivia Sick, Jodok Fink, Gabriel Seifert, Claudia Läßle, Gergana Nenova, Jens Höppner, Torben Glatz, Stefan Fichtner-Feigl, Goran Marjanovic
BACKGROUND: Intestinal anastomotic insufficiency (AI) is a common problem in visceral surgery associated with overexpression of matrix metalloproteinases (MMPs). In some patients it occurs more than once. The etiology of recurring anastomotic insufficiency (RAI) is not understood yet and should be addressed as an independent disease entity. MATERIALS AND METHODS: Thirty nine consecutive patients with AI were treated at our university center and were included in this prospective study...
March 6, 2019: Journal of Surgical Research
Jacquelyn Chou, Alex C Ferris, Teresa Chen, Ruth Seok, Denise Yoon, Yuichiro Suzuki
Many organisms both undergo dramatic morphological changes during post-embryonic development and also regenerate lost structures, but the roles of epigenetic regulators in such processes are only beginning to be understood. In the present study, the functions of two histone modifiers were examined during metamorphosis and larval limb regeneration in the red flour beetle Tribolium castaneum. Polycomb (Pc), a member of Polycomb repressive complex 1 (PRC1), and Enhancer of zeste (E(z)), a member of Polycomb repressive complex 2 (PRC2), were silenced in larvae using RNA interference...
March 6, 2019: Developmental Biology
Di Hu, Marc van Zeyl, Krisztina Valter, Jason R Potas
Red-light treatment is emerging as a novel therapy for promoting tissue recovery but data on red-light penetration through human tissues are lacking. We aimed to: i) determine the effect of light irradiance, tissue thickness, skin tone, sex, and bone/muscle content on 660 nm light penetration through common sites of sports injuries, and ii) establish if cadaver tissues serve as a useful model for predicting red-light penetration in live tissues. Live and cadaver human tissues were exposed to 660 nm light at locations across the skull, spinal cord and upper and lower limbs...
March 9, 2019: Journal of Biophotonics
Tao Yang, Chao Yin, Mufei Yue, Pengfei Jiang, Ruirui Yang, Xianju Zhou, Wenliang Gao, Rihong Cong
Searching efficient red phosphors under near UV or blue light excitation is practically important to improve the current white light emitting diodes (WLEDs). Eu2+- and Mn4+-based red phosphors have been extensively studied, here we proposed that Eu3+ is also a promising activator when it resides on a noncentrosymmetric coordination site. We proved that Cd4GdO(BO3)3 is a good host, which has a significantly distorted coordination for Eu3+. A careful crystallographic study was performed on the solid solutions of Cd4Gd1-xEuxO(BO3)3 (0 ≤ x ≤ 1) by Rietveld refinements...
March 7, 2019: Chemistry, An Asian Journal
Joon-Young Jun, Min-Jeong Jung, In-Hak Jeong, Gwang-Woo Kim, Jae-Man Sim, Si-Youl Nam, Byoung-Mok Kim
To find an economic use of red snow crab ( Chionoecetes japonicus ) shell waste, we focused on its high mineral content. To evaluate its usability as a coagulant for tofu making, the effects of the crab shell extracts on the textural and sensorial properties of the tofu samples were investigated. The crab shell powder (CSP) and ash (CSA) were used for their extract preparation, and 1%-5% acetic acid treatment led to an abundance of calcium in the resulting extracts. The tofu yields of all the acetic acid extracts were comparable with those of the commercial coagulants MgCl2 and glucono-δ-lactone (GDL)...
February 2019: Food Science & Nutrition
Ya-Nan Bie, Peng Gu, Yu-Ting Chen, Xiao-Xu Zhou, Yu-Guang Tian, Qin Yang, Hai-Yan Li, Xia Lin, Yan-Hong Guan, Tao-Yan Lin, Xun Lu, Hong-Fen Shen, Ting-Xiao Fang, Yu-Min Liu, Dong Xiao, Wei-Wang Gu
BACKGROUND: Mesenchymal stromal cells (MSCs) were originally characterized by the ability to differentiate into different mesenchymal lineages in vitro, and their immunomodulatory and trophic functions have recently aroused significant interest in the application of MSCs in cell-based regenerative medicine. However, a major problem in clinical practice is the replicative senescence of MSCs, which limits the cell proliferation potential of MSCs after large-scale expansion. Telomeric zinc finger-associated protein (TZAP), a novel specific telomere-binding protein, was recently found to stimulate telomere trimming and prevent excessive telomere elongation...
March 7, 2019: Journal of Translational Medicine
Jessica G Shantha, Brent R Hayek, Ian Crozier, Catherine Gargu, Robert Dolo, Jerry Brown, John Fankhauser, Steven Yeh
BACKGROUND: In the wake of the West African Ebola virus disease (EVD) outbreak of 2014-2016, thousands of EVD survivors began to manifest a constellation of systemic and ophthalmic sequelae. Besides systemic arthralgias, myalgias, and abdominal pain, patients were developing uveitis, a spectrum of inflammatory eye disease leading to eye pain, redness, and vision loss. To investigate this emerging eye disease, resources and equipment were needed to promptly evaluate this sight-threatening condition, particularly given our identification of Ebola virus in the ocular fluid of an EVD survivor during disease convalescence...
March 7, 2019: PLoS Neglected Tropical Diseases
Artor Niccoli Asabella, Corinna Altini, Anna G Nappi, Valentina Lavelli, Cristina Ferrari, Andrea Marzullo, Alessandra Loiodice, Giuseppe Rubini
Sickle cell disease (SCD) is the best known haemoglobinopathy, caused by a mutation substituting valina for glutamic acid at position 6 of the beta-globin chain of adult hemoglobin A, resulting in hemoglobin S (HbS). The homozygous HbS disease (HbSS), an autosomal recessive disorder, is the most common form and the Mediterranean area, along with sub-Saharian African and India, have the highest prevalence (1%-15%). In particular, Sicily with a prevalence of 2%-5%, is among the most interested regions. However, migratory flows have led to a wider diffusion of the disease no longer confined to endemic areas...
March 5, 2019: Hellenic Journal of Nuclear Medicine
Vincent Boudreau, Richard Chen, Alan Edwards, Muhammad Sulaimain, Paul S Maddox
Across most sexually reproducing animals, centrosomes are provided to the oocyte through fertilization and must be positioned properly to establish the zygotic mitotic spindle. How centrosomes are positioned in space and time through the concerted action of key mitotic entry biochemical regulators including Protein Phosphatase 2A (PP2A-B55/SUR-6), biophysical regulators including Dynein, and the nuclear lamina is unclear. Here, we uncover a role for PP2A-B55/SUR-6 in regulating centrosome separation. Mechanistically, PP2A-B55/SUR-6 regulates nuclear size prior to mitotic entry, in turn affecting nuclear envelope-based Dynein density and motor capacity...
March 6, 2019: Molecular Biology of the Cell
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