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https://www.readbyqxmd.com/read/28440786/magnetic-and-transport-properties-of-layered-compound-ce-sub-2-sub-te-sub-5-sub
#1
Dong Chen, Shuai Zhang, Yang Huaixin, Jianqi Li, Gen-Fu Chen
Ce<sub>2</sub>Te<sub>5</sub> single crystals were successfully grown using RbCl/LiCl flux method. The structure of Ce<sub>2</sub>Te<sub>5</sub> can be viewed as a combination of CeTe<sub>2</sub> and CeTe<sub>3</sub>. The experimental results of magnetic susceptibility <i>χ</i>(<i>T</i>), isothermal magnetization <i>M</i>(<i>H</i>), electrical resistivity <i>ρ</i>(<i>T</i>), and heat capacity <i>C</i>(<i>T</i>) show two clear anomalies at 5...
April 25, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/28438606/cell-origin-volume-and-arrangement-are-drivers-of-articular-cartilage-formation-morphogenesis-and-response-to-injury-in-mouse-limbs
#2
Rebekah S Decker, Hyo-Bin Um, Nathaniel A Dyment, Naiga Cottingham, Yu Usami, Motomi Enomoto-Iwamoto, Mark S Kronenberg, Peter Maye, David W Rowe, Eiki Koyama, Maurizio Pacifici
Limb synovial joints are composed of distinct tissues, but it is unclear which progenitors produce those tissues and how articular cartilage acquires its functional postnatal organization characterized by chondrocyte columns, zone-specific cell volumes and anisotropic matrix. Using novel Gdf5(CreERT2) (Gdf5-CE), Prg4-CE and Dkk3-CE mice mated to R26-Confetti or single-color reporters, we found that knee joint progenitors produced small non-migratory progenies and distinct local tissues over prenatal and postnatal time...
April 21, 2017: Developmental Biology
https://www.readbyqxmd.com/read/28435961/single-photon-coulomb-explosion-of-methanol-using-broad-bandwidth-ultrafast-euv-pulses
#3
Itamar Luzon, Krishna Jagtap, Ester Livshits, Oleg Lioubashevski, Roi Baer, Daniel Strasser
Single-photon Coulomb explosion of methanol is instigated using the broad bandwidth pulse achieved through high-order harmonics generation. Using 3D coincidence fragment imaging of one molecule at a time, the kinetic energy release (KER) and angular distributions of the products are measured in different Coulomb explosion (CE) channels. Two-body CE channels breaking either the C-O or the C-H bonds are described as well as a proton migration channel forming H2O(+), which is shown to exhibit higher KER. The results are compared to intense-field Coulomb explosion measurements in the literature...
April 24, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28434226/in-situ-microprobe-single-cell-capillary-electrophoresis-mass-spectrometry-metabolic-reorganization-in-single-differentiating-cells-in-the-live-vertebrate-x-laevis-embryo
#4
Rosemary M Onjiko, Erika P Portero, Sally A Moody, Peter Nemes
Knowledge of single-cell metabolism would provide a powerful window to cell activity changes as cells differentiate to all the tissues of the vertebrate embryo. However, single-cell mass spectrometry technologies have not yet been made compatible with complex three-dimensional changes and rapidly decreasing cell sizes during early development of the embryo. Here, we bridge this technological gap by integrating capillary microsampling, microscale metabolite extraction, and capillary electrophoresis electrospray ionization mass spectrometry (CE-ESI-MS) to enable direct metabolic metabolic analysis of identified cells in the live frog embryo (Xenopus laevis)...
April 22, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28432685/chiral-analysis-of-%C3%AE-diimine-ru-ii-and-fe-ii-complexes-by-capillary-electrophoresis-using-sulfated-cyclodextrins-as-stereoselectors
#5
Petra Sázelová, Dušan Koval, Lukáš Severa, Filip Teplý, Václav Kašička
Capillary electrophoresis (CE) using randomly highly sulfated α-, β-, and γ-cyclodextrins (S-α-CD, S-β-CD, S-γ-CD), sulfobutylether-β-CD (SBE-β-CD), single isomer (6-O-sulfo) α-, β-, and γ-CDs and their derivatives as stereoselectors was applied to chiral analysis of polypyridyl complexes of [Ru(bpy)3 ](2+) , [Ru(phen)3 ](2+) , and [Fe(phen)3 ](2+) (bpy = 2,2'-bipyridine; phen = 1,10 phenanthroline). The best separations of Δ- and Λ-enantiomers of the these complexes with high resolution (up to R1,2  = 7...
April 22, 2017: Electrophoresis
https://www.readbyqxmd.com/read/28426509/log-transformed-emg-amplitude-power-output-relationship-single-leg-knee-extensor-versus-single-leg-cycle-ergometry
#6
Eric B Noble, Joshua M Pilarski, Harshal K Vora, Jorge M Zuniga, Moh H Malek
Comparing and contrasting motor unit recruitment and activation for the same muscles for multiple versus single-joint exercise may provide a better understanding of neuromuscular fatigue. The purpose of this study, therefore, is to compare the slope and y-intercept terms for the three superficial quadriceps femoris (vastus lateralis, rectus femoris, and vastus medialis) muscles derived from the log-transformed EMG amplitude-power output relationship between the single-leg knee-extensor ergometry and the single-leg cycle ergometry...
April 15, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28418619/determination-of-lipoic-acid-in-human-urine-by-capillary-zone-electrophoresis
#7
Paweł Kubalczyk, Rafał Głowacki
Fast, simple and accurate CE method enabling determination of lipoic acid (LA) in human urine has been developed and validated. LA is a disulfide-containing natural compound absorbed from the organism's diet. Due to powerful antioxidant activity, LA has been used for prevention and treatment of various diseases and disorders, e.g. cardiovascular diseases, neurodegenerative disorders and cancer. The proposed analytical procedure consists of liquid-liquid sample extraction, reduction of LA with tris(2-carboxyethyl)phosphine, derivatization with 1-benzyl-2-chloropyridinium bromide (BCPB) followed by field amplified sample injection stacking, capillary zone electrophoresis separation and ultraviolet-absorbance detection of LA-BCPB derivative at 322 nm...
April 18, 2017: Electrophoresis
https://www.readbyqxmd.com/read/28417676/bio-energy-generation-in-an-affordable-single-chamber-microbial-fuel-cell-integrated-with-adsorption-hybrid-system-effects-of-temperature-and-comparison-study
#8
Pei-Fang Tee, Mohammad Omar Abdullah, Ivy A W Tan, Mohamed A M Amin, Cirilo Nolasco-Hipolito, Kopli Bujang
A microbial fuel cell (MFC) intergrated with adsorption system (MFC-AHS) are tested under various operating tempartures with palm oil mill effluent (POME) as the substrate. The optimum operating temperature for such system is found to be at ∼ 35°C with current, power density, internal resistance (Rin), coulombic efficiency (CE) and maximum chemical oxygen demand (COD) removal of 2.51 ± 0.2 mA, 74 ± 6 mW m(-3), 25.4 Ω, 10.65 ± 0.5% and 93.57 ± 1.2%, respectively. Maximum current density increase linearly with temperature at a rate of 0...
April 18, 2017: Environmental Technology
https://www.readbyqxmd.com/read/28417373/a-rapid-procedure-for-the-purification-of-8-aminopyrene-trisulfonate-apts-labeled-glycans-for-capillary-electrophoresis-ce-based-enzyme-assays
#9
Hayden J Danyluk, Leona K Shum, Wesley F Zandberg
Purified glycan standards are required for glycan arrays, characterizing substrate specificities of glycan-active enzymes, and to serve as retention-time or mobility standards for various separation techniques. This chapter describes a method for the rapid separation, and subsequent desalting, of glycans labeled with the highly fluorescent fluorophore 8-aminopyrene 1,3,6-trisulfonate (APTS). By using fluorophore-assisted carbohydrate electrophoresis (FACE) on polyacrylamide gels, which utilizes equipment readily available in most molecular biology laboratories, many APTS-labeled glycans can be simultaneously resolved...
2017: Methods in Molecular Biology
https://www.readbyqxmd.com/read/28415069/comparison-of-bioimpedance-and-underwater-weighing-body-fat-percentage-before-and-acutely-after-exercise-at-varying-intensities
#10
Brett S Nickerson, Michael R Esco, Brian M Kliszczewicz, Todd J Freeborn
Nickerson, BS, Esco, MR, Kliszczewicz, BM, and Freeborn, TJ. Comparison of bioimpedance and underwater weighing body fat percentage before and acutely after exercise at varying intensities. J Strength Cond Res 31(5): 1395-1402, 2017-The purpose of this study was to compare single-frequency bioelectrical impedance analysis (BIA) and bioimpedance spectroscopy (BIS) with underwater weighing (UWW) body fat percentage (BF%) before (PRE), immediately post (IP), and 60 minutes post (60P) an acute bout of moderate and vigorous aerobic exercise...
May 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/28403018/prophylactic-atropine-administration-attenuates-the-negative-haemodynamic-effects-of-induction-of-anaesthesia-with-propofol-and-high-dose-remifentanil-a-randomised-controlled-trial
#11
Marieke Poterman, Thomas W L Scheeren, Marieke I van der Velde, Pieter L Buisman, Silvie Allaert, Michel M R F Struys, Alain F Kalmar
BACKGROUND: Induction of anaesthesia with propofol and remifentanil often induces unwanted bradycardia and hypotension, raising concerns regarding tissue oxygenation. The electrophysiological cardiac effects of remifentanil can be reversed by atropine. OBJECTIVE: To investigate if prophylactic administration of atropine can attenuate the negative haemodynamic effects of propofol and a high dose of remifentanil during induction of anaesthesia. DESIGN: A double-blind, randomised controlled trial...
April 11, 2017: European Journal of Anaesthesiology
https://www.readbyqxmd.com/read/28401220/polyoxotungstate-incorporating-organotriphosphonate-ligands-and-lanthanide-ions-syntheses-characterization-magnetism-and-photoluminescence-properties
#12
Ran Ban, Xiaopeng Sun, Jiawei Wang, Pengtao Ma, Chao Zhang, Jingyang Niu, Jingping Wang
Four structurally intriguing members of a new family of lanthanide (Ln)-containing organophosphonate-functionalized polyoxotungstates with the general formula K2[Ln(H2O)4(AsW9O33)(W2O3)(O3PCOHCH3PO3)Ln(H2O)7]2·15H2O [Ln = Ce (1Ce), Nd (2Nd), Sm (3Sm) and Eu (4Eu)] were directly isolated by controlling the reaction parameters and well established by single-crystal X-ray diffraction, PXRD analyses, IR spectra, elemental analyses, TG and EDX analyses. All the four three-dimensional frameworks consist of the S-shaped inorganic building block {[(AsW9O33)(W2O3)]2}, two organophosphonate groups {O3PCOHCH3PO3} and four Ln ions...
April 12, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28397906/surfactant-assisted-synthesis-of-polythiophene-ni0-5zn0-5fe2-xcexo4-ferrite-composites-study-of-structural-dielectric-and-magnetic-properties-for-emi-shielding-applications
#13
M Abdullah Dar, Kowsar Majid, Mohd Hanief Najar, R K Kotnala, Jyoti Shah, S K Dhawan, M Farukh
This work reports the exploitation of nanocrystalline Ni0.5Zn0.5Fe2-xCexO4 ferrite for potential application by designing quasi-spherical shaped polythiophene (PTH) composites via in situ emulsion polymerization. The structural, electronic, dielectric, magnetic, and electromagnetic interference (EMI) shielding properties of PTH/Ni0.5Zn0.5Fe2-xCexO4 composites were investigated. Our results suggest that these properties could be optimized by modulating the concentration of x (composition) in the polymer matrix...
April 19, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28395991/simultaneous-determination-of-cocaine-crack-and-its-metabolites-in-oral-fluid-urine-and-plasma-by-liquid-chromatography-mass-spectrometry-and-its-application-in-drug-users
#14
Taís Regina Fiorentin, Felipe Bianchini D'Avila, Eloisa Comiran, Amanda Zamboni, Juliana Nichterwitz Scherer, Flavio Pechansky, Paulo Eduardo Mayorga Borges, Pedro Eduardo Fröehlich, Renata Pereira Limberger
INTRODUCTION: A single LC-MS equipment was used to validate three methods for simultaneously analyzing cocaine (COC), benzoylecgonine (BZE), cocaethylene (CE), anhydroecgonine methyl ester (AEME) and anhydroecgonine (AEC) in oral fluid (OF), urine and plasma. METHODS: The methods were carried out using a Kinetex HILIC column for polar compounds at 30°C. Mobile phase with isocratic condition of acetonitrile: 13mM ammonium acetate pH 6.0: methanol (55:35:10 v/v/v) at 0...
April 7, 2017: Journal of Pharmacological and Toxicological Methods
https://www.readbyqxmd.com/read/28382312/highly-multiplexed-signal-readout-for-a-time-of-flight-positron-emission-tomography-detector-based-on-silicon-photomultipliers
#15
Joshua W Cates, Matthew F Bieniosek, Craig S Levin
Maintaining excellent timing resolution in the generation of silicon photomultiplier (SiPM)-based time-of-flight positron emission tomography (TOF-PET) systems requires a large number of high-speed, high-bandwidth electronic channels and components. To minimize the cost and complexity of a system's back-end architecture and data acquisition, many analog signals are often multiplexed to fewer channels using techniques that encode timing, energy, and position information. With progress in the development SiPMs having lower dark noise, after pulsing, and cross talk along with higher photodetection efficiency, a coincidence timing resolution (CTR) well below 200 ps FWHM is now easily achievable in single pixel, bench-top setups using 20-mm length, lutetium-based inorganic scintillators...
January 2017: Journal of Medical Imaging
https://www.readbyqxmd.com/read/28381364/injections-from-sub-%C3%AE-l-sample-volumes-in-commercial-capillary-electrophoresis
#16
Andrea Šlampová, Pavel Kubáň
A simple sample injection procedure compatible with commercial capillary electrophoresis (CE) instrumentation was developed, which enables handling sample volumes as little as 250nL for analytical applications where sample volume availability is of concern. Single-use micro-sampling inserts were prepared by thermal modification of polypropylene micropipette tips and the inserts were accommodated in standard CE vials in CE autosampler carousel. To ensure direct contact of separation capillary injection end with sample solution and to avoid possible damage to the capillary, a soft compression spring was placed at the bottom of the vial underneath the micro-sampling insert...
March 27, 2017: Journal of Chromatography. A
https://www.readbyqxmd.com/read/28375619/electronic-structure-and-magnetic-anisotropy-in-lanthanoid-single-ion-magnets-with-c3-symmetry-the-ln-trenovan-series
#17
Eva Lucaccini, José J Baldoví, Laura Chelazzi, Anne-Laure Barra, Fabrizia Grepioni, Jean-Pierre Costes, Lorenzo Sorace
We report the syntheses and the magnetic characterization of a new series of lanthanide complexes, in which the Ce, Nd, Gd, Dy, Er, and Yb derivatives show single-molecule magnet behavior. These complexes, named Ln(trenovan), where H3trenovan is tris(((3-methoxysalicylidene)amino)ethyl)amine, exhibit trigonal symmetry and the Ln(III) ion is heptacoordinated. Their molecular structure is then very similar to that of the previously reported Ln(trensal) series, where H3trensal is 2,2',2″-tris(salicylideneimino)triethylamine...
April 4, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28370326/probabilistic-peak-detection-in-ce-lif-for-str-dna-typing
#18
Michael Woldegebriel, Arian van Asten, Ate Kloosterman, Gabriel Vivó-Truyols
In this work we present a novel probabilistic peak detection algorithm based on a Bayesian framework for forensic DNA analysis. The proposed method aims at an exhaustive use of raw electropherogram (epg) data from a laser induced fluorescence multi-capillary electrophoresis (CE-LIF) system. As the raw-data is informative up to a single data point, the conventional threshold-based approaches discard relevant forensic information early in the data analysis pipeline. Our proposed method assigns a posterior probability reflecting the data point's relevance with respect to peak detection criteria...
March 31, 2017: Electrophoresis
https://www.readbyqxmd.com/read/28365344/azo-dyes-wastewater-treatment-and-simultaneous-electricity-generation-in-a-novel-process-of-electrolysis-cell-combined-with-microbial-fuel-cell
#19
Haiming Zou, Yan Wang
A new process of electrolysis cell (EC) coupled with microbial fuel cell (MFC) was developed here and its feasibility in methyl red (MR) wastewater treatment and simultaneous electricity generation was assessed. Results indicate that an excellent MR removal and electricity production performance was achieved, where the decolorization and COD removal efficiencies were 100% and 89.3%, respectively and a 0.56V of cell voltage output was generated. Electrolysis voltage showed a positive influence on decolorization rate (DR) but also cause a rapid decrease in current efficiency (CE)...
March 20, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28363986/gender-and-international-clinician-educators
#20
Dora J Stadler, Sophia Archuleta, Halah Ibrahim, Nina G Shah, Ahmed Ali Al-Mohammed, Joseph Cofrancesco
OBJECTIVES: To describe gender differences of international clinician educators (CEs) and leaders, and CEs' perceptions by gender of preparation, roles, rewards and factors affecting job satisfaction and retention in emerging international competency-based residency programmes. METHODS: Cross-sectional surveys of CEs and leadership were conductedJune 2013-June 2014 at institutions that had adopted competency-based graduate medical education and were accredited by the Accreditation Council for Graduate Medical Education-International...
March 31, 2017: Postgraduate Medical Journal
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