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https://www.readbyqxmd.com/read/28157637/synthesis-of-oms-2-graphite-nanocomposites-with-enhanced-activity-for-pollutants-degradation-in-the-presence-of-peroxymonosulfate
#1
Jia Fang, Jun Li, Long Gao, Xiwang Jiang, Jingwen Zhang, Aihua Xu, Xiaoxia Li
The octahedral molecular sieve manganese oxide (OMS-2) and graphite (Gt) composites (OMS-2/Gt) were prepared by a facile refluxing approach. The structure and morphology of the obtained materials were systematically investigated. The results reveal that OMS-2 nanofibers are uniformly dispersed on the surface of Gt, and the ratio of Mn(3+) species in OMS-2 increases lineally with the increase of Gt dosage. The catalytic activity of OMS-2/Gt was evaluated by the degradation of Acid Orange 7 (AO7) in the presence of peroxymonosulfate (PMS)...
January 18, 2017: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28157627/modeling-and-simulation-of-bacterial-outer-membranes-and-interactions-with-membrane-proteins
#2
REVIEW
Dhilon S Patel, Yifei Qi, Wonpil Im
The outer membrane (OM) of Gram-negative bacteria is composed of phospholipids in the periplasmic leaflet and lipopolysaccharides (LPS) in the external leaflet, along with β-barrel OM proteins (OMPs) and lipidated periplasmic lipoproteins. As a defensive barrier to toxic compounds, an LPS molecule has high antigenic diversity and unique combination of OM-anchored lipid A with core oligosaccharides and O-antigen polysaccharides, creating dynamic protein-LPS and LPS-LPS interactions. Here, we review recent efforts on modeling and simulation of native-like bacterial OMs to explore structures, dynamics, and interactions of different OM components and their roles in transportation of ions, substrates, and antibiotics across the OM and accessibility of monoclonal antibodies (mAbs) to surface epitopes...
January 31, 2017: Current Opinion in Structural Biology
https://www.readbyqxmd.com/read/28144661/manganese-containing-ionic-liquids-synthesis-crystal-structures-and-electrodeposition-of-manganese-films-and-nanoparticles
#3
Jeroen Sniekers, João C Malaquias, Luc Van Meervelt, Jan Fransaer, Koen Binnemans
Manganese(ii)-containing ionic liquids were synthesized, in which the manganese atoms are coordinated by glymes (diglyme, triglyme, tetraglyme), pyridine-N-oxide, dimethylsulfoxide or N-alkylimidazoles (N-methylimidazole, N-butylimidazole and N-hexylimidazole). As anion, bis(trifluoromethanesulfonyl)imide (bistriflimide, Tf2N(-)), trifluoromethanesulfonate (triflate, OTf(-)) or methanesulfonate (mesylate, OMs(-)) were used. The compounds were characterized by CHN analysis, FTIR, DSC and single-crystal X-ray diffraction measurements...
February 1, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28122220/refinement-of-oprh-lps-interactions-by-molecular-simulations
#4
Joonseong Lee, Dhilon S Patel, Iga Kucharska, Lukas K Tamm, Wonpil Im
The outer membrane (OM) of Gram-negative bacteria is composed of lipopolysaccharide (LPS) in the outer leaflet and phospholipids in the inner leaflet. The outer membrane protein H (OprH) of Pseudomonas aeruginosa provides an increased stability to the OMs by directly interacting with LPS. Here we report the influence of various P. aeruginosa and, for comparison, Escherichia coli LPS environments on the physical properties of the OMs and OprH using all-atom molecular dynamics simulations. The simulations reveal that although the P...
January 24, 2017: Biophysical Journal
https://www.readbyqxmd.com/read/28102628/transient-symptomatic-worsening-by-atropine-in-opsoclonus-myoclonus-syndrome
#5
Hirotsugu Miyoshi, Ryuji Nakamura, Ayano Yamaga, Toshiaki Haraki, Toshimichi Yasuda, Hiroshi Hamada, Masashi Kawamoto
Opsoclonus-myoclonus syndrome (OMS) is characterized by abnormal eye and systemic involuntary movements, as well as cerebellar ataxia. Some sedatives and anesthetics worsen movements associated with OMS, while there is no known report of a negative effect of atropine. We report on sedation in two patients with OMS. Involuntary movements were transiently worsened after using atropine with midazolam or thiamylal in both, but were not seen when atropine was not used. We speculated that atropine has the potential to exacerbate involuntary movements in OMS due to vulnerability to this agent via unknown mechanisms...
January 2017: Pediatrics International: Official Journal of the Japan Pediatric Society
https://www.readbyqxmd.com/read/28095866/improvement-of-displacement-estimation-of-breast-tissue-in-ultrasound-elastography-using-the-monogenic-signal
#6
Taher Slimi, Ines Marzouk Moussa, Tarek Kraiem, Halima Mahjoubi
BACKGROUND: In breast ultrasound elastography, tissues displacements estimation is obtained through a technique that follows the evolution of tissues under stress. However, during the acquisition of B-mode images, tissue displacements are often contaminated with multiplicative noise caused by changes in the speckle pattern in the tissue. Thus, the application of monogenic signal technique on the B-mode image in order to estimate displacement tissue, result in a presence of amplified noise in the deformation tissue image, which severely obscures the useful information...
January 17, 2017: Biomedical Engineering Online
https://www.readbyqxmd.com/read/28063142/tuning-the-synthesis-of-manganese-oxides%C3%A2-nanoparticles-for-efficient-oxidation-of-benzyl-alcohol
#7
Jingyuan Fei, Lixian Sun, Cuifeng Zhou, Huajuan Ling, Feng Yan, Xia Zhong, Yuxiang Lu, Jeffrey Shi, Jun Huang, Zongwen Liu
The liquid phase oxidation of benzyl alcohol is an important reaction for generating benzaldehyde and benzoic acid that are largely required in the perfumery and pharmaceutical industries. The current production systems suffer from either low conversion or over oxidation. From the viewpoint of economy efficiency and environmental demand, we are aiming to develop new high-performance and cost-effective catalysts based on manganese oxides that can allow the green aerobic oxidation of benzyl alcohol under mild conditions...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28049680/career-and-professional-satisfaction-of-oral-and-maxillofacial-surgery-residents-academic-surgeons-and-private-practitioners-does-gender-matter
#8
Kyriaki C Marti, Jesse Lanzon, Sean P Edwards, Marita R Inglehart
The aims of this study were to determine whether male vs. female oral and maxillofacial surgery (OMS) residents, academic surgeons (i.e., faculty members), and private practitioners in the U.S. differed in their general career satisfaction and job/professional satisfaction. Survey data were collected in 2011-12 from 267 OMS residents (response rate 55%), 271 OMS academic surgeons (response rate 31%), and 417 OMS private practitioners (response rates 13% web-based survey and 29% postal mail survey). The results showed that while the male vs...
January 2017: Journal of Dental Education
https://www.readbyqxmd.com/read/28042788/-update-of-the-gleason-system-and-other-prognostic-pathological-data-in-prostate-cancer-tumor-load
#9
Ricardo García-González, Ricardo García-Navas, José Montáns-Araújo
Desde que D. F. Gleason creara su sistema en 1966 (1 ) y que él mismo modificó en 1974 (2), su método ha sido universalmente aceptado y recomendado por la OMS (3)como factor pronóstico del carcinoma prostático (CaP). Pero, la generalización de la prueba del PSA a partir de 1979 (4), del desarrollo de la TRUS (5) y de la "biopty-gun" para la toma de biopsias en sextantes en los años 80 (6), y sus posteriores modificaciones, son hechos que han cambiado paulatinamente la postura ante el CaP y, con la experiencia adquirida, algunas de las reglas iniciales de Gleason han evolucionado...
December 2016: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/27986088/designing-and-screening-of-universal-drug-from-neem-azadirachta-indica-and-standard-drug-chemicals-against-influenza-virus-nucleoprotein
#10
Aftab Ahmad, Muhammad Rizwan Javed, Abdul Qayyum Rao, Tayyab Husnain
BACKGROUND: Different strains of influenza virus are affecting a large number of people worldwide. Many synthetic antiviral medicines are available for influenza virus in the market. But still there is a need for the development of universal drugs against these strains of influenza virus. METHODS: For this purpose conserved residues within the influenza virus nucleoprotein have been retrieved. The drugs, previously known to have antiviral properties, were screened to identify the best candidate universal drug against Influenza virus strains...
December 16, 2016: BMC Complementary and Alternative Medicine
https://www.readbyqxmd.com/read/27936914/characteristic-features-of-the-odontogenic-myxoma-on-cone-beam-computed-tomography
#11
Kaili Wang, Wenhao Guo, Meng You, Li Liu, Bei Tang, Guangning Zheng
OBJECTIVES: To illustrate the characteristic features of odontogenic myxoma (OM) on CBCT. METHODS: From 52 subjects with histopathologically diagnosed OMs, 18 subjects who underwent a CBCT examination were retrieved between May 2009 and April 2016. Features on CBCT images and clinical records were carefully observed and analyzed. RESULTS: Characteristic features include: (1) fine and straight septa that were recognized to separate the tumour into triangular, square or rectangular spaces, which appeared as "tennis racket" or "honeycomb" patterns; (2) septa that frequently scattered to the borders of lesions and appeared perpendicular to the margins; (3) tooth displacement and resorption that were seen in most of the OM lesions; (4) OMs that were noted to have a tendency to involve the alveolar process, scallop between the roots and affect the integrity of the alveolar ridge; (5) the cortex of OMs that appeared normally perforated and the edge of the cortex expanded into the soft tissue...
February 2017: Dento Maxillo Facial Radiology
https://www.readbyqxmd.com/read/27920488/evalmsa-a-program-to-evaluate-multiple-sequence-alignments-and-detect-outliers
#12
Alvaro Chiner-Oms, Fernando González-Candelas
We present EvalMSA, a software tool for evaluating and detecting outliers in multiple sequence alignments (MSAs). This tool allows the identification of divergent sequences in MSAs by scoring the contribution of each row in the alignment to its quality using a sum-of-pair-based method and additional analyses. Our main goal is to provide users with objective data in order to take informed decisions about the relevance and/or pertinence of including/retaining a particular sequence in an MSA. EvalMSA is written in standard Perl and also uses some routines from the statistical language R...
2016: Evolutionary Bioinformatics Online
https://www.readbyqxmd.com/read/27903729/joint-encoding-of-object-motion-and-motion-direction-in-the-salamander-retina
#13
Norma Krystyna Kühn, Tim Gollisch
: The processing of motion in visual scenes is important for detecting and tracking moving objects as well as for monitoring self-motion through the induced optic flow. Specialized neural circuits have been identified in the vertebrate retina for detecting motion direction or for distinguishing between object motion and self-motion, although little is known about how information about these distinct features of visual motion is combined. The salamander retina, which is a widely used model system for analyzing retinal function, contains object-motion-sensitive (OMS) ganglion cells, which strongly respond to local motion signals but are suppressed by global image motion...
November 30, 2016: Journal of Neuroscience: the Official Journal of the Society for Neuroscience
https://www.readbyqxmd.com/read/27886283/gold-nanoparticles-on-oms-2-for-heterogeneously-catalyzed-aerobic-oxidative-%C3%AE-%C3%AE-dehydrogenation-of-%C3%AE-heteroatom-substituted-ketones
#14
Daichi Yoshii, Xiongjie Jin, Takafumi Yatabe, Jun-Ya Hasegawa, Kazuya Yamaguchi, Noritaka Mizuno
In the presence of Au nanoparticles supported on manganese oxide OMS-2 (Au/OMS-2), various kinds of β-heteroatom-substituted α,β-unsaturated ketones (heteroatom = N, O, S) can be synthesized through α,β-dehydrogenation of the corresponding saturated ketones using O2 (in air) as the oxidant. The catalysis of Au/OMS-2 is truly heterogeneous, and the catalyst can be reused.
December 6, 2016: Chemical Communications: Chem Comm
https://www.readbyqxmd.com/read/27884628/skirt-followed-by-trouser-stenting-technique-true-anatomical-preservation-of-coronary-y-shaped-bifurcation-lesions-while-using-vanishing-bioresorbable-scaffolds-a-report-of-two-cases
#15
Wael Elabbassi, Arif Al Nooryani
We report on two cases in which Y-shaped coronary bifurcations were treated with the use of Bioresorbable scaffolds. The first case was of a 50-year-old man with NSTEMI. Coronary angiography showed stenosis involving a Y-shaped bifurcation of proximal to mid LAD and diagonal. The lesion was wired using two 0.14 BMW guide wires, followed by serial pre-dilatation of LAD and Diagonal branch. The stent into proximal LAD was deployed first as a skirt (3.5 × 12 BVS). Stent was post-dilated. A second 2.5 × 28 BVS was deployed into diagonal branch, protruding backwards; along with a 2...
November 3, 2016: Cardiovascular Revascularization Medicine: Including Molecular Interventions
https://www.readbyqxmd.com/read/27875708/does-restriction-of-public-health-care-dental-benefits-affect-the-volume-severity-or-cost-of-dental-related-hospital-visits
#16
David Salomon, R Eric Heidel, Antonia Kolokythas, Michael Miloro, Thomas Schlieve
PURPOSE: On July 1, 2012, the Illinois legislature passed the Save Medicaid Access and Resources Together (SMART) Act, which restricts adult public dental insurance coverage to emergency-only treatment. The purpose of this study was to measure the effect of this restriction on the volume, severity, and treatment costs of odontogenic infections in an urban hospital. MATERIALS AND METHODS: A retrospective cohort study of patients presenting for odontogenic pain or infection at the University of Illinois Hospital was performed...
October 29, 2016: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/27869226/the-effects-of-manganese-oxide-octahedral-molecular-sieve-chitosan-microspheres-on-sludge-bacterial-community-structures-during-sewage-biological-treatment
#17
Fei Pan, Wen Liu, Yang Yu, Xianze Yin, Qingrong Wang, Ziyan Zheng, Min Wu, Dongye Zhao, Qiu Zhang, Xiaoman Lei, Dongsheng Xia
This study examines the effects of manganese oxide octahedral molecular sieve chitosan microspheres (Fe3O4@OMS-2@CTS) on anaerobic and aerobic microbial communities during sewage biological treatment. The addition of Fe3O4@OMS-2@CTS (0.25 g/L) resulted in enhanced levels of operational performance for decolourization dye X-3B. However, degradation dye X-3B inhibition in the presence of Fe3O4@OMS-2@CTS was recorded as greater than or equal to 1.00 g/L. Illumina MiSeq high throughput sequencing of the 16 S rRNA gene showed that 108 genera were observed during the anaerobic process, while only 71 genera were observed during the aerobic process...
November 21, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27860151/high-temperature-hydrogen-storage-of-multiple-molecules-theoretical-insights-from-metalated-catechols
#18
Ehud Tsivion, Srimukh Prasad Veccham, Martin Head-Gordon
Insertion of open metal sites (OMS) into metal-organic frameworks (MOFs) is a promising strategy for preparation of physical adsorbents that enable H2 storage at room temperature. Density functional theory (DFT) calculations are reported on a promising paradigm for adsorption of multiple hydrogen molecules to a single OMS attached to an MOF linker via a catechol or thiocatechol. The interactions between adsorbed H2 and the OMS are characterized with special attention to their degrees of freedom and thermal properties...
January 18, 2017: Chemphyschem: a European Journal of Chemical Physics and Physical Chemistry
https://www.readbyqxmd.com/read/27805761/predicting-multicomponent-adsorption-isotherms-in-open-metal-site-materials-using-force-field-calculations-based-on-energy-decomposed-density-functional-theory
#19
Jurn Heinen, Nicholas C Burtch, Krista S Walton, Célia Fonseca Guerra, David Dubbeldam
For the design of adsorptive-separation units, knowledge is required of the multicomponent adsorption behavior. Ideal adsorbed solution theory (IAST) breaks down for olefin adsorption in open-metal site (OMS) materials due to non-ideal donor-acceptor interactions. Using a density-function-theory-based energy decomposition scheme, we develop a physically justifiable classical force field that incorporates the missing orbital interactions using an appropriate functional form. Our first-principles derived force field shows greatly improved quantitative agreement with the inflection points, initial uptake, saturation capacity, and enthalpies of adsorption obtained from our in-house adsorption experiments...
December 12, 2016: Chemistry: a European Journal
https://www.readbyqxmd.com/read/27801769/adult-onset-opsoclonus-myoclonus-syndrome-associated-with-ganglionic-acetylcholine-receptor-autoantibody
#20
Jonathan R Galli, Stacey L Clardy, M Mateo Paz Soldán
INTRODUCTION: Opsoclonus-myoclonus syndrome (OMS) may have a toxin induced, parainfectious, or paraneoplastic etiology. Several autoantibodies have been associated with adult-onset OMS, most commonly antineuronal nuclear antibody 2 (Ri), and it is most frequently associated with breast or small cell lung cancer. The nicotinic ganglionic acetylcholine receptor autoantibody (α3-AChR Ab) has not been described in association. CASE REPORT: A 46-year-old woman was evaluated for symptoms of oscillopsia, tremor, gait imbalance, and mild cognitive deficits that began 6 weeks prior...
November 2016: Neurologist
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