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https://www.readbyqxmd.com/read/29792240/posttraumatic-stress-depression-and-coping-following-the-2015-nepal-earthquake-a-study-on-adolescents
#1
Asmita Sharma, Nilamadhab Kar
OBJECTIVE: The study aimed to gather data on posttraumatic stress and depression in adolescents following the 2015 Nepal earthquake and explore the adolescents' coping strategies. METHODS: In a questionnaire-based, cross-sectional study about 1 year after the earthquake, adolescents in two districts with different degrees of impact were evaluated for disaster experience, coping strategies, and symptoms of posttraumatic stress and depression measured with the Child Posttraumatic Stress Scale and the Depression Self Rating Scale...
May 24, 2018: Disaster Medicine and Public Health Preparedness
https://www.readbyqxmd.com/read/29792028/in-situ-structural-elucidation-and-selective-pb2-ion-recognition-of-polydopamine-film-formed-by-controlled-electrochemical-oxidation-of-dopamine
#2
K S Shalini Devi, Sharu Jacob, Annamalai Senthil Kumar
Owing to the versatility and biocompatibility, a self-polymerized DA (in presence of air at pH 8.5 tris buffer solution) as a polydopamine (pDA) film has been used for a variety of applications. Indeed, instability under electrified condition (serious surface-fouling) and structural ambiguity of the pDA have been found to be unresolved problems. Previously, pDA films (has hygroscopic and insoluble property) prepared by various controlled chemical oxidation methods have been examined for the structural analysis using ex-situ solid-state NMR and Mass Spectroscopic techniques...
May 24, 2018: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29791129/formation-of-deep-electron-trap-by-yb-3-codoping-leads-into-super-long-persistent-luminescence-in-ce-3-doped-yttrium-aluminum-gallium-garnet-phosphors
#3
Jumpei Ueda, Shun Miyano, Setsuhisa Tanabe
The Y3 Al2 Ga3 O12 :Ce3+ -Cr3+ compound is one of the brightest persistent phosphors, but its persistent luminescence (PersL) duration is not so long due to the relatively shallow Cr3+ electron trap. Comparing the vacuum referred binding energy of the electron trapping state by Cr3+ and those by lanthanide ions, we selected Yb3+ as a deeper electron trapping center. The Y3 Al2 Ga3 O12 :Ce3+ -Yb3+ phosphors show Ce3+ :5d→4f green persistent luminescence after ceasing blue light excitation. The formation of Yb2+ was confirmed by the increased intensity of absorption at 585 nm during the charging process...
May 23, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29790512/probing-the-interaction-between-solid-benzene-and-water-using-vacuum-ultraviolet-and-infrared-spectroscopy
#4
Anita Dawes, Natalia Pascual, Nigel J Mason, Sabrina Gärtner, Søren V Hoffmann, Nykola C Jones
We present results of a combined vacuum ultraviolet (VUV) and infrared (IR) photoabsorption study of amorphous benzene : water mixtures and layers to investigate the benzene-water interaction in the solid phase. VUV spectra of 1 : 1, 1 : 10 and 1 : 100 benzene : water mixtures at 24 K reveal a concentration dependent shift in the energies of the 1B2u, 1B1u and 1E1u electronic states of benzene. All the electronic bands blueshift from pure amorphous benzene towards gas phase energies with increasing water concentration...
May 23, 2018: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29790352/constructing-sensitive-and-fast-lead-free-single-crystalline-perovskite-photodetectors
#5
Bin Yang, Ya-Juan Li, Yu-Xuan Tang, Xin Mao, Cheng Luo, Mei-Shan Wang, Wei-Qiao Deng, Ke-Li Han
We developed a high-performance photodetector based on (CH3 NH3 )3 Sb2 I9 (MA3 Sb2 I9 ) microsingle crystals (MSCs). The MA3 Sb2 I9 single crystals exhibit a low-trap state density of ∼1010 cm-3 and a long carrier diffusion length reaching 3.0 μm, suggesting its great potential for optoelectronic applications. However, the centimeter single crystal (CSC)-based photodetector exhibits low responsivity (10-6 A/W under 1 sun illumination) due to low charge-carrier collection efficiency. By constructing the MSC photodetector with efficient charge-carrier collection, the responsivity can be improved by three orders of magnitude (under 1 sun illumination) and reach 40 A/W with monochromatic light (460 nm)...
May 24, 2018: Journal of Physical Chemistry Letters
https://www.readbyqxmd.com/read/29790272/observation-of-a-metastable-p-heterocyclic-radical-by-muonium-addition-to-a-1-3-diphosphacyclobutane-2-4-diyl
#6
Shigekazu Ito, Yasuhiro Ueta, Kota Koshino, Kenji M Kojima, Iain McKenzie, Koichi Mikami
A 1,3-diphosphacyclobutane-2,4-diyl contains a unique unsaturated cyclic unit, and the presence of radical-type centres have been expected as a source of functionalities. This study demonstrates that the P-heterocyclic singlet biradical captures muonium (Mu = [µ+e-]) of the light isotope of hydrogen radical to generate an observable P-heterocyclic paramagnetic species. Investigation of a powder sample of 2,4-bis(2,4,6-tri-t-butylphenyl)-1-t-butyl-3-benzyl-1,3-diphosphacyclobutane-2,4-diyl by muon avoided level-crossing resonance (µLCR) spectroscopy revealed that muonium adds to the cyclic P2C2 unit...
May 22, 2018: Angewandte Chemie
https://www.readbyqxmd.com/read/29790233/factors-regulating-carbon-sinks-in-mangrove-ecosystems
#7
Shi-Bo Li, Po-Hung Chen, Jih-Sheng Huang, Mei-Li Hsueh, Li-Yung Hsieh, Chen-Lu Lee, Hsing-Juh Lin
Mangroves are recognized as one of the richest carbon storage systems. However, the factors regulating carbon sinks in mangrove ecosystems are still unclear, particularly in the subtropical mangroves. The biomass, production, litterfall, detrital export and decomposition of the dominant mangrove vegetation in subtropical (Kandelia obovata) and tropical (Avicennia marina) Taiwan were quantified from October 2011 to July 2014 to construct the carbon budgets. Despite the different tree species, a principal component analysis revealed the site or environmental conditions had a greater influence than the tree species on the carbon processes...
May 23, 2018: Global Change Biology
https://www.readbyqxmd.com/read/29789550/neutrophil-extracellular-traps-promote-macrophage-pyroptosis-in-sepsis
#8
Linsong Chen, Yanfeng Zhao, Dengming Lai, Peng Zhang, Yang Yang, Yuehua Li, Ke Fei, Gening Jiang, Jie Fan
In response to infection, polymorphonuclear neutrophils (PMN) are recruited in the infectious sites, and employ three major strategies to fight against the microbes including phagocytosis, degranulation, and neutrophil extracellular traps (NETs). NETs are a meshwork of chromatin fibers mixed with granule-derived antimicrobial peptides and enzymes, which trap and kill the bacteria extracellularly. In this study, by using a mouse sepsis model, we identified a novel mechanism by which NETs induce macrophage (Mϕ) pyroptosis, a caspase-1-dependent regulated cell death...
May 22, 2018: Cell Death & Disease
https://www.readbyqxmd.com/read/29787602/endocrine-disrupting-potency-of-organic-pollutant-mixtures-isolated-from-commercial-fish-oil-evaluated-in-yeast-based-bioassays
#9
Marek Łukasz Roszko, Marta Kamińska, Krystyna Szymczyk, Katarzyna Piasecka-Jóźwiak, Beata Chabłowska
The aim of this work was to evaluate the activity of xenobiotic mixtures containing persistent organic pollutants isolated from commercial fish oil samples against sex hormone receptors, including estrogen and androgen. The applied bioassay was based on transgenic yeast strains. The mixtures were extracted from the samples using the semi-permeable membrane dialysis technique and analyzed with gas chromatography/ion trap mass spectrometry. It turned out that mixtures of chemicals isolated from fish oil may interact with human steroid sex hormone receptors in various ways: the tested samples showed both estrogenic and anti-androgenic activity...
2018: PloS One
https://www.readbyqxmd.com/read/29786609/comparison-of-trapped-charges-and-hysteresis-behavior-in-hbn-encapsulated-single-mos-sub-2-sub-flake-based-field-effect-transistors-on-sio-sub-2-sub-and-hbn-substrates
#10
Changhee Lee, Servin Rathi, Muhammad Atif Khan, Dongsuk Lim, Yunseob Kim, Sun Jin Yun, Doo-Hyeb Youn, Kenji Watanabe, Takashi Taniguchi, Gil-Ho Kim
Molybdenum disulfide (MoS<sub>2</sub>) based field effect transistors (FETs) are of considerable interest in electronic and opto-electronic applications but often have large hysteresis and threshold voltage instabilities. In this study, by using advanced transfer techniques, hexagonal boron nitride (hBN) encapsulated FETs based on a single, homogeneous and atomic-thin MoS<sub>2</sub> flake are fabricated on hBN and SiO<sub>2</sub> substrates...
May 22, 2018: Nanotechnology
https://www.readbyqxmd.com/read/29785428/1-methyl-4-aryl-urazole-maura-labels-tyrosine-in-proximity-to-ruthenium-photocatalysts
#11
Shinichi Sato, Kensuke Hatano, Michihiko Tsushima, Hiroyuki Nakamura
We designed and synthesised peptides conjugated with proline linkers and ruthenium photocatalysts. These peptides were used as substrates to evaluate the photocatalyst-proximity dependences of candidates for tyrosine labelling reagents. The 1-methyl-4-aryl-urazole (MAUra) structure was found to be a novel tyrosyl radical trapping agent to label tyrosine residues effectively under the conditions where the ruthenium photocatalyst and tyrosine were in close proximity. Using a ruthenium photocatalyst conjugated to a carbonic anhydrase ligand, the target protein in a complex protein mixture was labelled with remarkable target selectivity by azide- or desthiobiotin-conjugated MAUra derivatives...
May 22, 2018: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/29784333/2-4-alkadienal-trapping-by-phenolics
#12
Francisco J Hidalgo, Rosario Zamora
Phenolics can trap lipid-derived reactive carbonyls as a protective function that diminishes the broadcasting of the lipid oxidative damage to food macromolecules. In an attempt to clarify the trapping of 2,4-alkadienals by phenolics, this study analyzes the reactions of 2,4-hexadienal, 2,4-heptadienal, and 2,4-decadienal with 2-methylresorcinol. These reactions produced (E)-4-(alk-1-en-1-yl)-8-methyl-2,7-bis(prop-1-en-2-yloxy)chromanes, which were isolated and characterized by 1D and 2D NMR and MS. Carbonyl-phenol adduct formation was favored at pH > 7 and moderate temperatures (25-80 °C)...
October 15, 2018: Food Chemistry
https://www.readbyqxmd.com/read/29782890/novel-dental-adhesive-resin-with-crack-self-healing-antimicrobial-and-remineralization-properties
#13
Shichao Yue, Junling Wu, Qiang Zhang, Ke Zhang, Michael D Weir, Satoshi Imazato, Yuxing Bai, Hockin H K Xu
OBJECTIVES: Secondary caries at the tooth-restoration margins is a primary reason for restoration failure. Cracks at the margins lead to leakage which can trap bacteria, producing acids to cause caries. To date, there has been no report on developing an adhesive resin that has self-healing, antibacterial and remineralizing capabilities. The objectives of this study were to: (1) develop the first self-healing adhesive with antimicrobial and remineralizing capabilities, and (2) investigate the effects of incorporating microcapsules, dimethylaminohexadecyl methacrylate (DMAHDM) and nanoparticles of amorphous calcium phosphate (NACP) for the first time...
May 18, 2018: Journal of Dentistry
https://www.readbyqxmd.com/read/29781277/morphological-contributions-to-interfacial-charge-trapping-and-non-geminate-recombination-in-polymer-solar-cells-revealed-by-uv-light-soaking
#14
Griffin Canning, Alan K Thomas, David H Dunlap, John K Grey
Non-geminate charge recombination occurs over a broad range of time scales in polymer solar cells and represents a serious loss channel for the performance and lifetime of devices. Multiple factors influence this process, including changes in morphology and formation of permanent defects, but individual contributions are often difficult to resolve from conventional experiment. We use intensity modulated photocurrent/photovoltage spectroscopy (IMPS/IMVS) to investigate non-geminate charge recombination in blends of poly[2,6-(4,4-bis-(2-ethylhexyl)-4H-cyclopenta [2,1-b;3,4-b']dithiophene)-alt-4,7(2,1,3-benzothiadiazole)] (PCPDTBT) and [6,6]-phenyl-C61-butyric acid methyl ester, PCBM) solar cells...
May 21, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29781272/high-performance-photovoltaic-readable-ferroelectric-nonvolatile-memory-based-on-la-doped-bifeo-3-films
#15
Dong Li, Dongxing Zheng, Chao Jin, Wanchao Zheng, Haili Bai
Epitaxial La0.1 Bi0.9 FeO3 (LBFO) films with SrRuO3 (SRO) bottom electrodes were fabricated on SrTiO3 (001) substrates by magnetron sputtering. The LBFO thin films exhibit strong ferroelectric properties. Electric field controlled nonvolatile reversible resistance switchings and switchable photovoltaic effects have been observed in Pt/LBFO/SRO heterostructures. With the optimized LBFO film thickness, the observed room temperature pulsed-read resistance switching ratio can reach 105 % magnitude by applying ±2...
May 21, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29780468/room-temperature-olefination-of-methane-with-titanium-carbon-multiple-bonds
#16
Takashi Kurogi, Joonghee Won, Bohyun Park, Oleksandra S Trofymchuk, Patrick J Carroll, Mu-Hyun Baik, Daniel J Mindiola
C-H activation of methane followed by dehydrocoupling at room temperature led ultimately to the formation of the olefin H2 C 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 1111111111111111111111111111111111 1111111111111111111111111111111111 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 1111111111111111111111111111111111 1111111111111111111111111111111111 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 CH t Bu via the addition of redox-active ligands (L) such as thioxanthone or 2,2'-bipyridine (bipy) to (PNP)Ti 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 1111111111111111111111111111111111 1111111111111111111111111111111111 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 1111111111111111111111111111111111 1111111111111111111111111111111111 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 0000000000000000000000000000000000 CH t Bu(CH3 ) ( 1 )...
April 7, 2018: Chemical Science
https://www.readbyqxmd.com/read/29779489/rap1-downregulation-by-mir-320c-reduces-platelet-activation-in-ex-vivo-storage
#17
Chintamani Atreya, Neetu Dahiya
BACKGROUND: A small GTPase protein, the Ras-related protein 1 (RAP1), abundant in platelets is known to be activated following agonist induced platelet activation, suggesting that RAP1 downregulation could in turn reduce platelet activation in storage. Our objective of this study is to identify RAP1 regulating miRNAs and their role in platelet activation during storage. METHODS: We applied MS2-TRAP (tagged RNA affinity purification) methodology to enrich miRNAs that target the 3' untranslated region (3'UTR) of RAP1 mRNA in two mammalian cell lines followed by miRNA identification by microarray of total RNA samples enriched for miRNAs...
May 20, 2018: MicroRNA
https://www.readbyqxmd.com/read/29777974/stable-photoluminescence-of-lanthanide-complexes-in-aqueous-media-through-metal-organic-frameworks-nanoparticles-with-plugged-surface
#18
Feng Chen, Liucan Wang, Yuxin Xing, Jixi Zhang
The photoluminescence stability of lanthanide complex in aqueous media is a prerequisite for diagnostics probes. The combination of building blocks working in concert to facilitate host-guest structures is now considered state of the art in surpassing this roadblock, yet there still remains a tremendous challenge. Here, a stable, highly-luminescent system was developed through trapping anionic complexes sensitized by tridentate pyridine-tetrazolate (pytz) ligands within the rigid framework of ZIF-8 (zeolitic imidazolate framework-8) particles (∼60 nm in size)...
May 16, 2018: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/29777134/zebrafish-vcap1x2-regulates-cardiac-contractility-and-proliferation-of-cardiomyocytes-and-epicardial-cells
#19
Fang-Chi Hsieh, Yu-Fen Lu, Ian Liau, Chien-Chang Chen, Chao-Min Cheng, Chung-Der Hsiao, Sheng-Ping L Hwang
Sarcomeric signaling complexes are important to sustain proper sarcomere structure and function, however, the mechanisms underlying these processes are not fully elucidated. In a gene trap experiment, we found that vascular cell adhesion protein 1 isoform X2 (VCAP1X2) mutant embryos displayed a dilated cardiomyopathy phenotype, including reduced cardiac contractility, enlarged ventricular chamber and thinned ventricular compact layer. Cardiomyocyte and epicardial cell proliferation was decreased in the mutant heart ventricle, as was the expression of pAKT and pERK...
May 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29776039/autoresonant-excitation-of-bose-einstein-condensates
#20
S V Batalov, A G Shagalov, L Friedland
Controlling the state of a Bose-Einstein condensate driven by a chirped frequency perturbation in a one-dimensional anharmonic trapping potential is discussed. By identifying four characteristic time scales in this chirped-driven problem, three dimensionless parameters P_{1,2,3} are defined describing the driving strength, the anharmonicity of the trapping potential, and the strength of the particles interaction, respectively. As the driving frequency passes the linear resonance in the problem, and depending on the location in the P_{1,2,3} parameter space, the system may exhibit two very different evolutions, i...
March 2018: Physical Review. E
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