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https://www.readbyqxmd.com/read/28219323/a-preliminary-assessment-of-the-lma-protector%C3%A2-in-non-paralysed-patients
#1
Ban Leong Sng, Farida Binte Ithnin, Deepak Mathur, Eileen Lew, Nian-Lin Reena Han, Alex Tiong-Heng Sia
BACKGROUND: The LMA Protector™ is the latest CE marked single use supraglottic airway device. This airway device provides access and functional separation of the respiratory and digestive tracts. There are two ports (male, female ports) to provide suction in the laryngeal region and insertion of the gastric tube. The aim of our study is to assess the ease of use, airway quality, device positioning, airway leak and complications associated with initial clinical experience in LMA Protector™ usage...
February 20, 2017: BMC Anesthesiology
https://www.readbyqxmd.com/read/28214624/effect-of-cobalt-loading-on-the-solid-state-properties-and-ethyl-acetate-oxidation-performance-of-cobalt-cerium-mixed-oxides
#2
M Konsolakis, S A C Carabineiro, G E Marnellos, M F Asad, O S G P Soares, M F R Pereira, J J M Órfão, J L Figueiredo
Cobalt-cerium mixed oxides were prepared by the wet impregnation method and evaluated for volatile organic compounds (VOCs) abatement, using ethyl acetate (EtAc) as model molecule. The impact of Co content on the physicochemical characteristics of catalysts and EtAc conversion was investigated. The materials were characterized by various techniques, including N2 adsorption at -196°C, scanning electron microscopy (SEM), X-ray diffraction (XRD), H2-temperature programmed reduction (H2-TPR) and X-ray photoelectron spectroscopy (XPS) to reveal the structure-activity relationship...
February 10, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28214617/demonstrating-construct-validity-of-the-american-board-of-physical-medicine-and-rehabilitation-part-i-examination-an-analysis-of-dimensionality
#3
Mikaela Raddatz, Lawrence R Robinson
BACKGROUND: Ideally, high stakes examinations assess one dimension of medical knowledge to produce precise estimates of a candidate's performance. It has not been reported whether the American Board of Physical Medicine and Rehabilitation Part 1 Certification Examination (ABPMR-CE-1) is unidimensional or not. OBJECTIVE: To examine the ABPMR-CE-1 to measure how many dimensions it assesses. DESIGN: Retrospective observational study. SETTING: We assessed examination results from the 2015 ABPMR-CE-1...
February 15, 2017: PM & R: the Journal of Injury, Function, and Rehabilitation
https://www.readbyqxmd.com/read/28213262/one-single-fast-and-robust-capillary-electrophoresis-method-for-the-direct-quantification-of-intact-adenovirus-particles-in-upstream-and-downstream-processing-samples
#4
Ewoud van Tricht, Lars Geurink, Harold Backus, Marta Germano, Govert W Somsen, Cari E Sänger-van de Griend
During development of adenovirus-based vaccines, samples have to be analyzed in order to either monitor the production process or control the quality and safety of the product. An important quality attribute is the total concentration of intact adenoviruses, which currently is determined by quantitative polymerase chain reaction (qPCR) or anion exchange-HPLC. Capillary Electrophoresis (CE) was evaluated as alternative to the current methods with the aim to have one single method that allows reliable and fast quantification of adenovirus particles throughout the full process...
May 1, 2017: Talanta
https://www.readbyqxmd.com/read/28212489/direct-single-enzyme-biomineralization-of-catalytically-active-ceria-and-ceria-zirconia-nanocrystals
#5
Christopher D Curran, Li Lu, Yue Jia, Christopher J Kiely, Bryan W Berger, Steven McIntosh
Biomineralization is an intriguing approach to the synthesis of functional inorganic materials for energy applications whereby biological systems are engineered to mineralize inorganic materials and control their structure over multiple length scales under mild reaction conditions. Herein we demonstrate a single enzyme mediated biomineralization route to synthesize crystalline, catalytically active, quantum confined ceria (CeO2-x) and ceria-zirconia (Ce1-yZryO2-x) nanocrystals for application as environmental catalysts...
February 17, 2017: ACS Nano
https://www.readbyqxmd.com/read/28210706/single-balloon-enteroscopy-efficacy-and-degree-of-concordance-with-noninvasive-evaluation-of-small-bowel
#6
Margarida Marques, João Antunes, Rosa Coelho, Hélder Cardoso, Filipe Vilas Boas, Armando Ribeiro, Guilherme Macedo
Background and study aims Clinical impact of single-balloon enteroscopy (SBE) is fairly known, as well as its diagnostic yield comparing with other small bowel gastrointestinal investigations. This study represents a contribution to better understand it and is designed to evaluate SBE efficacy and degree of concordance with previous evaluation of small bowel. Patients and methods This is a single-center retrospective study of patients that underwent SBE with suspected small bowel disease based on non-invasive imaging...
February 2017: Endoscopy International Open
https://www.readbyqxmd.com/read/28207243/analysis-of-lanthanide-radical-magnetic-interactions-in-ce-iii-2-2-bipyridyl-complexes
#7
Fabrizio Ortu, Jingjing Liu, Matthew Burton, Jonathan M Fowler, Alasdair Formanuik, Marie-Emmanuelle Boulon, Nicholas F Chilton, David P Mills
A series of lanthanide complexes bearing organic radical ligands, [Ln(Cp(R))2(bipy·(-))] [Ln = La, Cp(R) = Cp(tt) (1); Ln = Ce, Cp(R) = Cp(tt) (2); Ln = Ce, Cp(R) = Cp″ (3); Ln = Ce, Cp(R) = Cp‴ (4)] [Cp(tt) = {C5H3(t)Bu2-1,3}(-); Cp″ = {C5H3(SiMe3)2-1,3}(-); Cp‴ = {C5H2(SiMe3)3-1,2,4}(-); bipy = 2,2'-bipyridyl], were prepared by reduction of [Ln(Cp(R))2(μ-I)]2 or [Ce(Cp‴)2(I) (THF)] with KC8 in the presence of bipy (THF = tetrahydrofuran). Complexes 1-4 were thoroughly characterized by structural, spectroscopic, and computational methods, together with magnetism and cyclic voltammetry, to define an unambiguous Ln(III)/bipy·(-) radical formulation...
February 16, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28199086/crystal-growth-and-structure-analysis-of-ce18w10o57-a-complex-oxide-containing-tungsten-in-an-unusual-trigonal-prismatic-coordination-environment
#8
Dileka Abeysinghe, Mark D Smith, Jeongho Yeon, T Thao Tran, Robert Paria Sena, Joke Hadermann, P Shiv Halasyamani, Hans-Conrad Zur Loye
The noncentrosymmetric tungstate oxide, Ce18W10O57, was synthesized for the first time as high-quality single crystals via the molten chloride flux method and structurally characterized by single-crystal X-ray diffraction. The compound is a structural analogue to the previously reported La18W10O57, which crystallizes in the hexagonal space group P6̅2c. The +3 oxidation state of cerium in Ce18W10O57 was achieved via the in situ reduction of Ce(IV) to Ce(III) using Zn metal. The structure consists of both isolated and face-shared WO6 octahedra and, surprisingly, isolated WO6 trigonal prisms...
February 15, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28198517/a-monte-carlo-study-for-optimizing-the-detector-of-spect-imaging-using-a-xcat-human-phantom
#9
Mohammad Khoshakhlagh, Jalil Pirayesh Islamian, Seyyed Mohammad Abedi, Babak Mahmoudian, Masoud Shayesteh Azar
BACKGROUND: Acquiring a high quality image has assigned an important concern for obtaining accurate diagnosis in nuclear medicine. Detector is a critical component of Single Photon Emission Computed Tomography (SPECT) imaging system for giving accurate information from exact pattern of radionuclide distribution in the target organ. The images are strongly affected by the attenuation, scattering, and response of the detector. The conventional detector is mainly made from sodium iodide activated by thallium [NaI(Tl)] in nuclear medicine imaging...
2017: Nuclear Medicine Review. Central & Eastern Europe
https://www.readbyqxmd.com/read/28192957/integrated-extraction-chromatographic-separation-of-the-lithophile-elements-involved-in-long-lived-radiogenic-isotope-systems-rb-sr-u-th-pb-sm-nd-la-ce-and-lu-hf-useful-in-geochemical-and-environmental-sciences
#10
Christian Pin, Abdelmouhcine Gannoun
A fast and efficient sample preparation method in view of isotope ratio measurements is described, allowing the separation of 11 elements involved, either as "parent" or as "daughter" isotopes, in six radiogenic isotope systems used as chronometers and tracers in earth, planetary, and environmental sciences. The protocol is based on small extraction chromatographic columns, used either alone or in tandem, through which a single nitric acid solution is passed, without any intervening evaporation step. The columns use commercially available extraction resins (Sr resin, TRU resin, Ln resin, RE resin, and again Ln resin for isolating Sr and Pb, LREE then La-Ce-Nd-Sm, Lu(Yb), and Hf, Th, and U, respectively) along with an additional, in-house prepared resin for separating Rb...
February 9, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28182835/maximin-optimal-designs-for-cluster-randomized-trials
#11
Sheng Wu, Weng Kee Wong, Catherine M Crespi
We consider design issues for cluster randomized trials (CRTs) with a binary outcome where both unit costs and intraclass correlation coefficients (ICCs) in the two arms may be unequal. We first propose a design that maximizes cost efficiency (CE), defined as the ratio of the precision of the efficacy measure to the study cost. Because such designs can be highly sensitive to the unknown ICCs and the anticipated success rates in the two arms, a local strategy based on a single set of best guesses for the ICCs and success rates can be risky...
February 9, 2017: Biometrics
https://www.readbyqxmd.com/read/28171784/developmental-validation-of-the-miseq-fgx-forensic-genomics-system-for-targeted-next-generation-sequencing-in-forensic-dna-casework-and-database-laboratories
#12
Anne C Jäger, Michelle L Alvarez, Carey P Davis, Ernesto Guzmán, Yonmee Han, Lisa Way, Paulina Walichiewicz, David Silva, Nguyen Pham, Glorianna Caves, Jocelyne Bruand, Felix Schlesinger, Stephanie J K Pond, Joe Varlaro, Kathryn M Stephens, Cydne L Holt
Human DNA profiling using PCR at polymorphic short tandem repeat (STR) loci followed by capillary electrophoresis (CE) size separation and length-based allele typing has been the standard in the forensic community for over 20 years. Over the last decade, Next-Generation Sequencing (NGS) matured rapidly, bringing modern advantages to forensic DNA analysis. The MiSeq FGx™ Forensic Genomics System, comprised of the ForenSeq™ DNA Signature Prep Kit, MiSeq FGx™ Reagent Kit, MiSeq FGx™ instrument and ForenSeq™ Universal Analysis Software, uses PCR to simultaneously amplify up to 231 forensic loci in a single multiplex reaction...
January 27, 2017: Forensic Science International. Genetics
https://www.readbyqxmd.com/read/28169819/-study-of-two-indicators-of-difficulty-in-initiating-maternal-breastfeeding-160-maternal-fatigue-and-suboptimal-infant-breastfeeding-behaviour
#13
Latifa Saidi, Pierre Godbout
<ce:para>The problems with setting up breastfeading are common and are associated with a heightened risk of weening. The main motives brought up by the mothers for early weening were fatigue and the suboptimal infant breastfeeding behaviour (SIBB). The goal of this study is to describe the fatigue levels of breastfeading women who gave birth to healthy full term babies in a hospital setting and the SIBB. This study also examines the relation between these two variables.</ce:para><ce:para>This descriptive correlational and cross-sectional study was conducted with breasfeeding women who gave birth to healthy, full term, single babies at the CHU in Moncton between June and September 2013...
July 5, 2016: Recherche en Soins Infirmiers
https://www.readbyqxmd.com/read/28164543/detection-the-frequency-and-characteristics-of-flt3-internal-tandem-duplication-mutations-by-capillary-electrophoresis-assay-and-next-generation-sequencing-in
#14
Liang Ma, Yongyue Cao, Yongwei Jiang, Xiao Cong, Shuang Lu, Jun Shen, Qian Liu, Chengwu Han, Yuliang Zhan, Yongtong Cao
BACKGROUND: FLT3-internal tandem duplication mutations (ITDs) are found in approximately 30% of patients with acute myeloid leukemia (AML) and are markers of poor prognosis. However, the characteristics of FLT3/ ITDs in Chinese AML patients have rarely been reported. The aim of this study was to analyze the frequency and characteristics of FLT3/ITDs in Chinese AML patients. METHODS: In the selected 152 cases of Chinese AML patients, capillary electrophoresis (CE) was used to analyze the frequency and characteristics of FLT3/ITDs...
October 1, 2016: Clinical Laboratory
https://www.readbyqxmd.com/read/28162099/cost-effectiveness-of-active-case-finding-of-household-contacts-of-pulmonary-tuberculosis-patients-in-a-low-hiv-tuberculosis-endemic-urban-area-of-lima-peru
#15
L Shah, M Rojas, O Mori, C Zamudio, J S Kaufman, L Otero, E Gotuzzo, C Seas, T F Brewer
We compared the cost-effectiveness (CE) of an active case-finding (ACF) programme for household contacts of tuberculosis (TB) cases enrolled in first-line treatment to routine passive case-finding (PCF) within an established national TB programme in Peru. Decision analysis was used to model detection of TB in household contacts through: (1) self-report of symptomatic cases for evaluation (PCF), (2) a provider-initiated ACF programme, (3) addition of an Xpert MTB/RIF diagnostic test for a single sputum sample from household contacts, and (4) all strategies combined...
February 6, 2017: Epidemiology and Infection
https://www.readbyqxmd.com/read/28159508/mechanical-performance-of-polymer-infiltrated-zirconia-ceramics
#16
Jing Li, Xue-Hui Zhang, Ben-Cang Cui, Yuan-Hua Lin, Xu-Liang Deng, Ming Li, Ce-Wen Nan
OBJECTIVE: The aim of this study was to evaluate the microstructure and mechanical behavior of polymer-infiltrated zirconia ceramics as a function of pre-sintering temperature (1000-1150°C). METHODS: Polymer-infiltrated zirconia ceramics were prepared by combining the porous zirconia networks and polymer through infiltration and polymerization. XRD was employed to determine phase structure. The microstructure and fracture mechanism were observed by SEM. Flexural strength and fracture toughness were measured by three-point bending method and single-edge-notched beam method, respectively...
January 31, 2017: Journal of Dentistry
https://www.readbyqxmd.com/read/28157308/photoluminescent-and-slow-magnetic-relaxation-studies-on-lanthanide-iii-2-5-pyrazinedicarboxylate-frameworks
#17
Maria Vanda Marinho, Daniella O Reis, Willian X C Oliveira, Lippy F Marques, Humberto O Stumpf, Mariadel Déniz, Jorge Pasán, Catalina Ruiz-Pérez, Joan Cano, Francesc Lloret, Miguel Julve
In the series described in this work, the hydrothermal synthesis led to oxidation of the 5-methyl-pyrazinecarboxylate anion to the 2,5-pyrazinedicarboxylate dianion (2,5-pzdc) allowing the preparation of three-dimensional (3D) lanthanide(III) organic frameworks of formula {[Ln2(2,5-pzdc)3(H2O)4]·6H2O}n [Ln = Ce (1), Pr (2), Nd (3), and Eu (4)] and {[Er2(2,5-pzdc)3(H2O)4]·5H2O}n (5). Single-crystal X-ray diffraction on 1-5 reveals that they crystallize in the triclinic system, P1̅ space group with the series 1-4 being isostructural...
February 20, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28157130/synthesis-and-structure-determination-of-ce6cd23te-a-new-chalcogen-containing-member-of-the-re6cd23t-family-re-is-a-rare-earth-metal-and-t-is-a-late-group-14-15-and-16-element
#18
Griffen Desroches, Svilen Bobev
The ternary phase hexacerium tricosacadmium telluride, Ce6Cd23Te, was synthesized by a high-temperature reaction of the elements in sealed Nb ampoules and was structurally characterized by powder and single-crystal X-ray diffraction. The structure, established from single-crystal X-ray diffraction methods, is isopointal with the Zr6Zn23Si structure type (Pearson symbol cF120, cubic space group Fm-3m), a filled version of the Th6Mn23 structure with the same space group and Pearson symbol cF116. Though no Cd-containing rare-earth metal binaries are known to form with this structure, it appears that the addition of small amounts of a p-block element allows the formation of such interstitially stabilized ternary compounds...
February 1, 2017: Acta Crystallographica. Section C, Structural Chemistry
https://www.readbyqxmd.com/read/28132648/experimental-validation-of-contrast-enhanced-ssfp-cine-cmr-for-quantification-of-myocardium-at-risk-in-acute-myocardial-infarction
#19
David Nordlund, Mikael Kanski, Robert Jablonowski, Sasha Koul, David Erlinge, Marcus Carlsson, Henrik Engblom, Anthony H Aletras, Håkan Arheden
BACKGROUND: Accurate assessment of myocardium at risk (MaR) after acute myocardial infarction (AMI) is necessary when assessing myocardial salvage. Contrast-enhanced steady-state free precession (CE-SSFP) is a recently developed cardiovascular magnetic resonance (CMR) method for assessment of MaR up to 1 week after AMI. Our aim was to validate CE-SSFP for determination of MaR in an experimental porcine model using myocardial perfusion single-photon emission computed tomography (MPS) as a reference standard and to test the stability of MaR-quantification over time after injecting gadolinium-based contrast...
January 30, 2017: Journal of Cardiovascular Magnetic Resonance
https://www.readbyqxmd.com/read/28130979/gamma-gamma-coincidence-performance-of-labr3-ce-scintillation-detectors-vs-hpge-detectors-in-high-count-rate-scenarios
#20
A Drescher, M Yoho, S Landsberger, M Durbin, S Biegalski, D Meier, J Schwantes
A radiation detection system consisting of two cerium doped lanthanum bromide (LaBr3:Ce) scintillation detectors in a gamma-gamma coincidence configuration has been used to demonstrate the advantages that coincident detection provides relative to a single detector, and the advantages that LaBr3:Ce detectors provide relative to high purity germanium (HPGe) detectors. Signal to noise ratios of select photopeak pairs for these detectors have been compared to high-purity germanium (HPGe) detectors in both single and coincident detector configurations in order to quantify the performance of each detector configuration...
January 15, 2017: Applied Radiation and Isotopes
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