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https://www.readbyqxmd.com/read/28345709/a-study-of-asymmetrical-mixed-valent-mo2-mo2-complexes-in-the-class-iii-regime
#1
Suman Mallick, Tao Cheng, Lu Chen, Miao Meng, Yu Yu Zhang, Chun Y Liu
Three novel asymmetrical dimolybdenum dimers, [Mo2(DAniF)3]2(μ-OOCCOS) (DAniF = N,N'-di(p-anisyl)formamidinate) ([OO-OS]), [Mo2(DAniF)3]2(μ-S2CCO2) ([SS-OO]), and [Mo2(DAniF)3]2(μ-SSCCOS) ([SS-OS]), have been synthesized and characterized by either single-crystal X-ray crystallography or (1)H NMR spectroscopy. The structural asymmetry for these compounds gives rise to a redox asymmetry, which enlarges the potential separation (ΔE1/2) between the two [Mo2] units. The mixed-valance (MV) species [OO-OS](+), [SS-OO](+) and [SS-OS](+), prepared by one-electron chemical oxidation of the neutral precursors, exhibit an intense and symmetrical intervalence charge transfer (IVCT) absorption band in the near-IR region, along with the high energy metal (δ) to ligand (π*) (ML) and ligand (π) to metal (δ) charge transfer (LMCT) absorptions...
March 27, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28345704/atomic-layer-deposition-of-nickel-cobalt-spinel-thin-films
#2
D J Hagen, T S Tripathi, M Karppinen
We report the atomic layer deposition (ALD) of high-quality crystalline thin films of the spinel-oxide system (Co1-xNix)3O4. These spinel oxides are ferrimagnetic p-type semiconductors, and promising material candidates for several applications ranging from photovoltaics and spintronics to thermoelectrics. The spinel phase is obtained for Ni contents exceeding the x = 0.33 limit for bulk samples. It is observed that the electrical resistivity decreases continuously with x while the magnetic moment increases up to x = 0...
March 27, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28345700/electronic-structure-and-magnetic-properties-of-penta-graphene-nanoribbons
#3
P F Yuan, Z H Zhang, Z Q Fan, M Qiu
2D penta-graphene sheets were cut along typical crystallographic orientations in order to construct various penta-graphene nanoribbon (P-GNR) models, and their electronic structures and magnetic properties were systemically investigated. It was demonstrated that P-GNRs are very versatile with rich and unique electronic and magnetic properties. In particular, bipolar magnetic semiconducting features can be achieved in the ferromagnetic state for all magnetic P-GNRs, which makes P-GNRs valuable for developing next-generation information storage devices...
March 27, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28345696/interfacially-al-doped-zno-nanowires-greatly-enhanced-near-band-edge-emission-through-suppressed-electron-phonon-coupling-and-confined-optical-field
#4
Yiming Wu, Yanmeng Dai, Shenlong Jiang, Chao Ma, Yue Lin, Dongxue Du, Yukun Wu, Huaiyi Ding, Qun Zhang, Nan Pan, Xiaoping Wang
Aluminium (Al)-doped zinc oxide (ZnO) nanowires (NWs) with a unique core-shell structure and a Δ-doping profile at the interface were successfully grown using a combination of chemical vapor deposition re-growth and few-layer AlxOy atomic layer deposition. Unlike the conventional heavy doping which degrades the near-band-edge (NBE) luminescence and increases the electron-phonon coupling (EPC), it was found that there was an over 20-fold enhanced NBE emission and a notably-weakened EPC in this type of interfacially Al-doped ZnO NWs...
March 27, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28345612/wafer-scale-fabrication-of-non-polar-mesoporous-gan-distributed-bragg-reflectors-via-electrochemical-porosification
#5
Tongtong Zhu, Yingjun Liu, Tao Ding, Wai Yuen Fu, John Jarman, Christopher Xiang Ren, R Vasant Kumar, Rachel A Oliver
Distributed Bragg reflectors (DBRs) are essential components for the development of optoelectronic devices. For many device applications, it is highly desirable to achieve not only high reflectivity and low absorption, but also good conductivity to allow effective electrical injection of charges. Here, we demonstrate the wafer-scale fabrication of highly reflective and conductive non-polar gallium nitride (GaN) DBRs, consisting of perfectly lattice-matched non-polar (11-20) GaN and mesoporous GaN layers that are obtained by a facile one-step electrochemical etching method without any extra processing steps...
March 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28345349/a-self-assembled-ratiometric-polymeric-nanoprobe-for-highly-selective-fluorescence-detection-of-hydrogen-peroxide
#6
Chongchong Feng, Fengyang Wang, Yijing Dang, Zhiai Xu, Haijun Yu, Wen Zhang
In this study, a dual-emission fluorescence resonance energy transfer (FRET) polymeric nanoprobe by single-wavelength excitation was developed for sensitive and selective hydrogen peroxide (H2O2) detection. Polymeric nanoprobe was prepared by simple self-assembly of functional lipopolymers, which were 4-carboxy-3-fluorophenylboronic acid (FPBA)-modified DSPE-PEG (DSPE-PEG-FPBA) and 7-hydroxycoumarin (HC)-conjugated DSPE-PEG (DSPE-PEG-HC). Subsequent binding of alizarin red S (ARS) to FPBA endowed the nanoprobe with a new fluorescence emission peak at around 600 nm...
March 27, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28343333/use-of-phase-locking-value-in-sensorimotor-rhythm-based-brain-computer-interface-zero-phase-coupling-and-effects-of-spatial-filters
#7
Wenjuan Jian, Minyou Chen, Dennis J McFarland
Phase-locking value (PLV) is a potentially useful feature in sensorimotor rhythm-based brain-computer interface (BCI). However, volume conduction may cause spurious zero-phase coupling between two EEG signals and it is not clear whether PLV effects are independent of spectral amplitude. Volume conduction might be reduced by spatial filtering, but it is uncertain what impact this might have on PLV. Therefore, the goal of this study was to explore whether zero-phase PLV is meaningful and how it is affected by spatial filtering...
March 25, 2017: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/28342359/synergetic-effect-between-adsorption-and-photodegradation-on-nanostructured-tio2-activated-carbon-fiber-felt-porous-composites-for-toluene-removal
#8
Min Li, Bin Lu, Qin-Fei Ke, Ya-Jun Guo, Ya-Ping Guo
The low quantum efficiency and limited adsorption efficiency of TiO2 makes it only fit for the removal of VOCs with low concentrations. Herein, we for the first time fabricated nanostructured TiO2/activated carbon fiber felt (TiO2/ACFF) porous composites by the in situ deposition of TiO2 microspheres on the carbon fibers in ACFF. Interestingly, the TiO2 microspheres exhibit hierarchical nanostructures constructed by nanocrystals as building blocks. The TiO2/ACFF porous composites possess excellent adsorption and photodegradation properties for toluene because of the synergetic effects between the nanostructured TiO2 and ACFF...
March 15, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/28340777/taylor-dispersion-analysis-resonant-mass-measurement-and-bioactivity-of-pepsin-coated-gold-nanoparticles
#9
Markus Höldrich, Siyao Liu, Markus Epe, Michael Lämmerhofer
Immobilized enzyme reactors based on nanoparticulate carriers are becoming increasingly popular. A toolbox of methods is usually utilized for their characterization in order to be capable of assessing their suitability for the intended purpose. In this work, as a model system pepsin was conjugated to gold nanoparticles (GNPs) by a straightforward adsorptive immobilization process. The success of the immobilization procedure was monitored by Vis spectroscopy via shifts of the localized surface plasmon resonance (LSPR) band, size characterization by dynamic light scattering (DLS), and ζ-potential determinations by electrophoretic light scattering...
May 15, 2017: Talanta
https://www.readbyqxmd.com/read/28340530/effect-of-severe-plastic-deformation-on-structure-and-properties-of-al-sc-ta-and-al-sc-ti-alloys
#10
Alla Berezina, Tetiana Monastyrska, Olexandr Davydenko, Oleh Molebny, Sergey Polishchuk
The comparative analysis of the effect of monotonous and non-monotonous severe plastic deformations (SPD) on the structure and properties of aluminum alloys has been carried out. Conventional hydrostatic extrusion (HE) with a constant deformation direction and equal-channel angular hydroextrusion (ECAH) with an abrupt change in the deformation direction were chosen for the cases of monotonous and non-monotonous SPD, respectively. Model cast hypoeutectic Al-0.3%Sc alloys and hypereutectic Al-0.6%Sc alloys with Ta and Ti additives were chosen for studying...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28340215/development-of-enzyme-immunoassays-elisa-and-western-blot-for-the-serological-diagnosis-of-dermatophytosis-in-symptomatic-and-asymptomatic-cats
#11
Aline Elisa Santana, Carlos Pelleschi Taborda, Julia So Severo, Glauce Mary Gomes Rittner, Julian Esteban Muñoz, Carlos Eduardo Larsson, Carlos Eduardo Larsson
Dermatophytosis is the most common fungal infection in cats worldwide and plays an important role in both animal and human health due to their high zoonotic potential. Effective screening is a strong preventive measure and the fungal culture is quite useful but requires full laboratorial experience and it takes a long time to obtain the result. A rapid and accurate screening test for dermatophytosis in cats is crucial for the effective control of disease outbreaks. The aim of this study was to develop and evaluate the diagnostic efficacy of enzyme immunoassays (ELISA and Western blot [WB]) for the rapid and precise diagnosis of dermatophytosis in cats...
March 11, 2017: Medical Mycology: Official Publication of the International Society for Human and Animal Mycology
https://www.readbyqxmd.com/read/28339732/exploring-the-in-vivo-digestion-of-plant-proteins-in-broiler-chickens
#12
E Recoules, H Sabboh-Jourdan, A Narcy, M Lessire, G Harichaux, V Labas, M J Duclos, S Réhault-Godbert
The use of various protein sources (industry by-products, proteaginous) in poultry diets requires a greater understanding of protein digestion mechanisms. The aim of this study was to characterize the molecular actors required for protein digestion in broilers fed 4 different diets containing soybean meal, rapeseed meal, pea, or corn distiller's dried grain with solubles as the only protein source. The digesta of the digestive tract segments were collected and soluble proteins were analyzed by SDS-PAGE. SDS-PAGE analyses revealed 5 ubiquitous bands in digesta of all digestive tract segments regardless of the diet, whereas 3 bands were diet-specific...
February 23, 2017: Poultry Science
https://www.readbyqxmd.com/read/28339208/doubly-resonant-photonic-antenna-for-single-infrared-quantum-dot-imaging-at-telecommunication-wavelengths
#13
Zhihua Xie, Yannick Lefier, Miguel Angel Suarez, Mathieu Mivelle, Roland Salut, Jean-Marc Merolla, Thierry Grosjean
Colloidal quantum dots (CQDs) have drawn strong interest in the past for their high prospects in scientific, medical, and industrial applications. However, the full characterization of these quantum emitters is currently restricted to the visible wavelengths, and it remains a key challenge to optically probe single CQDs operating in the infrared spectral domain, which is targeted by a growing number of applications. Here, we report the first experimental detection and imaging at room temperature of single infrared CQDs operating at telecommunication wavelengths...
March 24, 2017: Nano Letters
https://www.readbyqxmd.com/read/28338861/assessment-of-direct-interaction-between-cd36-and-an-oxidized-glycerophospholipid-species
#14
Satoshi Tsuzuki, Masayuki Yamasaki, Yuki Kozai, Tatsuya Sugawara, Yuki Manabe, Kazuo Inoue, Tohru Fushiki
SUMMARYCluster of differentiation 36 (CD36) is a transmembrane protein that recognizes multiple diverse ligands. It is believed that (i) oxidized glycerophosphocholine species having a terminal γ-hydroxyl(or oxo)-α,β-unsaturated carbonyl on the sn-2 acyl group (oxGPCCD36), which can occur on the surface of lipoprotein particles, serve as high-affinity ligands for CD36, and (ii) the amino acid 150-168 of CD36 (CD36150-168) is responsible for recognizing oxGPCCD36. However, it remains uncertain whether CD36150-168 directly interacts with oxGPCCD36 alone...
March 14, 2017: Journal of Biochemistry
https://www.readbyqxmd.com/read/28338390/biologic-remodeling-of-periodontal-dimensions-of-areas-treated-with-gingival-augmentation-procedure-gap-a-25-year-follow-up-observation
#15
Giancarlo Agudio, Leandro Chambrone, Giovanpaolo Pini Prato
BACKGROUND: The role of keratinized tissue (KT) for maintenance of periodontal health has been debated for many years. This study assessed the long-term "biologic remodeling" of periodontal dimensions of teeth treated with free gingival grafts (FGG) compared to their adjacent/untreated teeth. METHODS: Seventy-four patients, with at least one site showing absence or a reduced amount of attached gingiva associated with gingival recession at baseline, were treated with FGG in a private practice...
March 24, 2017: Journal of Periodontology
https://www.readbyqxmd.com/read/28337679/adsorption-of-mn-atom-on-pristine-and-defected-graphene-a-density-functional-theory-study
#16
V S Anithaa, R Shankar, S Vijayakumar
The functionalization of graphene with transition metals is of great interest due to its wide range of applications, such as hydrogen storage, spintronics, information storage, etc. Due to its magnetic property adsorption of Mn atom on graphene has a high consequence on the electronic properties of graphene. The increase in size of the graphene sheet with hydrogen termination has a high impact on the transformation of electronic properties of the graphene sheet. Hence in this work, we investigate the size as well as change in structural and electronic properties of pristine/defective graphene sheets on adsorption of Mn atom using density functional theory methods...
April 2017: Journal of Molecular Modeling
https://www.readbyqxmd.com/read/28337677/strain-induced-electronic-band-convergence-effect-on-the-seebeck-coefficient-of-mg2si-for-thermoelectric-applications
#17
H Balout, P Boulet, M-C Record
The present theoretical study, performed using density-functional theory and Boltzmann transport theory formalisms, shows that under 2.246 % isotropic tensile strain, the two energy-lowest conduction bands of Mg2Si overlap. The two, threefold-degenerated orbitals become a unique, sixfold-degenerated orbital. It is demonstrated that such degeneracy implies an increase of the Seebeck coefficient, of the electrical conductivity, of the power factor, and in fine of the figure of merit.
April 2017: Journal of Molecular Modeling
https://www.readbyqxmd.com/read/28336837/pnma-bn-another-boron-nitride-polymorph-with-interesting-physical-properties
#18
Zhenyang Ma, Zheng Han, Xuhong Liu, Xinhai Yu, Dayun Wang, Yi Tian
Structural, mechanical, electronic properties, and stability of boron nitride (BN) in Pnma structure were studied using first-principles calculations by Cambridge Serial Total Energy Package (CASTEP) plane-wave code, and the calculations were performed with the local density approximation and generalized gradient approximation in the form of Perdew-Burke-Ernzerhof. This BN, called Pnma-BN, contains four boron atoms and four nitrogen atoms buckled through sp³-hybridized bonds in an orthorhombic symmetry unit cell with Space group of Pnma...
December 28, 2016: Nanomaterials
https://www.readbyqxmd.com/read/28336421/percutaneous-planter-fasciitis-release-under-local-anesthesia-a-prospective-study
#19
Ramji Lal Sahu
PURPOSE: Plantar fasciitis is the most common cause of pain on the bottom of the heel. It occurs when the strong band of the tissue supporting the arch of foot becomes irritated and inflamed. The majority of patients can be treated conservatively but some resistant cases need surgery eventually. This study aims to evaluate the outcome results of percutaneous planter fascia release under local anesthesia for chronic planter fasciitis. METHODS: This prospective study was conducted in the Department of Orthopaedic Surgery in the School of Medical Science and Research, Sharda University, India from December 2010 to December 2013...
February 24, 2017: Chinese Journal of Traumatology, Zhonghua Chuang Shang za Zhi
https://www.readbyqxmd.com/read/28335493/melatonin-mt%C3%A2-and-mt%C3%A2-receptors-in-the-ram-reproductive-tract
#20
Marta González-Arto, David Aguilar, Elena Gaspar-Torrubia, Margarita Gallego, Melissa Carvajal-Serna, Luis V Herrera-Marcos, Edith Serrano-Blesa, Thais Rose Dos Santos Hamilton, Rosaura Pérez-Pé, Teresa Muiño-Blanco, José A Cebrián-Pérez, Adriana Casao
Some melatonin functions in mammals are exerted through MT₁ and MT₂ receptors. However, there are no reports of their presence in the reproductive tract of the ram, a seasonal species. Thus, we have investigated their existence in the ram testis, epididymis, accessory glands and ductus deferens. Real-time polymerase chain reaction (qPCR) revealed higher levels of m-RNA for both receptors in the testis, ampulla, seminal vesicles, and vas deferens, than in the other organs of the reproductive tract (p < 0...
March 19, 2017: International Journal of Molecular Sciences
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