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https://www.readbyqxmd.com/read/28536024/adsorption-of-cr-vi-on-cerium-immobilized-cross-linked-chitosan-composite-in-single-system-and-coexisted-with-orange-ii-in-binary-system
#1
Tianyi Zhu, Wei Huang, Lingfan Zhang, Jie Gao, Wenqing Zhang
In this work, cerium immobilized cross-linked chitosan (CTS-Ce) composite, employed as an efficient adsorbent for Cr(VI) in single system and coexisted with Orange II (OII) in binary system, was prepared by co-precipitation method. The as-obtained adsorbent was characterized by FTIR, SEM, EDS and XPS before and after adsorption. The adsorption behaviors of Cr(VI) in single and binary system were systematically studied. The maximum adsorption capacity of Cr(VI) on CTS-Ce (202.8mg/g) was calculated by Langmuir equation in single metal system, but it decreased to 112...
May 20, 2017: International Journal of Biological Macromolecules
https://www.readbyqxmd.com/read/28530388/microfluidic-capillary-electrophoresis-mass-spectrometry-for-analysis-of-monosaccharides-oligosaccharides-and-glycopeptides
#2
Kshitij Khatri, Joshua A Klein, John Haserick, Deborah R Leon, Catherine E Costello, Mark E McComb, Joseph Zaia
Glycomics and glycoproteomics analyses by mass spectrometry require efficient front-end separation methods to enable deep characterization of heterogeneous glycoform populations. Chromatography methods are generally limited in their ability to resolve glycoforms using mobile phases that are compatible with online liquid chromatography-mass spectrometry (LC-MS). The adoption of capillary electrophoresis-mass spectrometry methods (CE-MS) for glycomics and glycoproteomics is limited by the lack of convenient interfaces for coupling the CE devices to mass spectrometers...
May 22, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28526899/electricity-generation-from-real-industrial-wastewater-using-a-single-chamber-air-cathode-microbial-fuel-cell-with-an-activated-carbon-anode
#3
Hend Omar Mohamed, M Obaid, Enas Taha Sayed, Yang Liu, Jinpyo Lee, Mira Park, Nasser A M Barakat, Hak Yong Kim
This study introduces activated carbon (AC) as an effective anode for microbial fuel cells (MFCs) using real industrial wastewater without treatment or addition of external microorganism mediators. Inexpensive activated carbon is introduced as a proper electrode alternative to carbon cloth and carbon paper materials, which are considered too expensive for the large-scale application of MFCs. AC has a porous interconnected structure with a high bio-available surface area. The large surface area, in addition to the high macro porosity, facilitates the high performance by reducing electron transfer resistance...
May 19, 2017: Bioprocess and Biosystems Engineering
https://www.readbyqxmd.com/read/28522868/first-demonstration-of-multi-color-3-d-in-vivo-imaging-using-ultra-compact-compton-camera
#4
Aya Kishimoto, Jun Kataoka, Takanori Taya, Leo Tagawa, Saku Mochizuki, Shinji Ohsuka, Yuto Nagao, Keisuke Kurita, Mitsutaka Yamaguchi, Naoki Kawachi, Keiko Matsunaga, Hayato Ikeda, Eku Shimosegawa, Jun Hatazawa
In the field of nuclear medicine, single photon emission tomography and positron emission tomography are the two most common techniques in molecular imaging, but the available radioactive tracers have been limited either by energy range or difficulties in production and delivery. Thus, the use of a Compton camera, which features gamma-ray imaging of arbitrary energies from a few hundred keV to more than MeV, is eagerly awaited along with potential new tracers which have never been used in current modalities...
May 18, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28512225/high-arctic-holocene-temperature-record-from-the-agassiz-ice-cap-and-greenland-ice-sheet-evolution
#5
Benoit S Lecavalier, David A Fisher, Glenn A Milne, Bo M Vinther, Lev Tarasov, Philippe Huybrechts, Denis Lacelle, Brittany Main, James Zheng, Jocelyne Bourgeois, Arthur S Dyke
We present a revised and extended high Arctic air temperature reconstruction from a single proxy that spans the past ∼12,000 y (up to 2009 CE). Our reconstruction from the Agassiz ice cap (Ellesmere Island, Canada) indicates an earlier and warmer Holocene thermal maximum with early Holocene temperatures that are 4-5 °C warmer compared with a previous reconstruction, and regularly exceed contemporary values for a period of ∼3,000 y. Our results show that air temperatures in this region are now at their warmest in the past 6,800-7,800 y, and that the recent rate of temperature change is unprecedented over the entire Holocene...
May 16, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28506132/lanreotide-in-the-management-of-small-bowel-angioectasias-seven-year-data-from-a-tertiary-centre
#6
S Chetcuti Zammit, D S Sanders, R Sidhu
BACKGROUND AND AIMS: Haemorrhage from small bowel angioectasias (SBAs) can be debilitating to patients who are very often elderly and have multiple comorbidities. Our aim was to assess the use of lanreotide in addition to endotherapy in patients with SBAs. METHOD: Patients with SBAs on capsule endoscopy (CE) who received lanreotide injections from January 2010 to till the present day at the Royal Hallamshire Hospital in Sheffield were included. Baseline demographics were recorded...
May 16, 2017: Scandinavian Journal of Gastroenterology
https://www.readbyqxmd.com/read/28501554/molecular-typing-of-clostridium-difficile-isolates-cultured-from-patient-stool-samples-and-gastroenterological-medical-devices-in-a-single-iranian-hospital
#7
Masoumeh Azimirad, Marcela Krutova, Otakar Nyc, Zahra Hasani, Leili Afrisham, Masoud Alebouyeh, Mohammad Reza Zali
This study aimed to characterize Clostridium difficile isolates cultured from stool samples of patients with C. difficile infection (CDI) and swabs from a medical environment in a gastroenterology centre in Tehran, Iran. A total of 158 samples (105 stool samples from hospitalized patients and 53 swabs from medical devices and the environment) were collected from January 2011 to August 2011 and investigated for the presence of C. difficile by direct anaerobic culture on a selective media for C. difficile. C...
May 10, 2017: Anaerobe
https://www.readbyqxmd.com/read/28494434/p-cadherin-is-necessary-for-retinal-stem-cell-behavior-in-vitro-but-not-in-vivo
#8
Brenda L K Coles, Derek van der Kooy
Adult retinal stem cells (RSCs) are rare quiescent cells within the ciliary epithelium of the eye, which is made up of non-pigmented N-Cadherin(+ve) inner and pigmented P-Cadherin(+ve) outer cell layers. Through FACs and single cell analyses, we have shown that RSCs arise from single cells from within the pigmented CE and express P-Cadherin. However, whether the expression of P-Cadherin is required for maintenance of the stem cell in vivo or in the formation of the clonal stem cell spheres in vitro is not known...
May 3, 2017: Stem Cell Research
https://www.readbyqxmd.com/read/28491295/magnetic-resonance-imaging-planning-in-children-with-complex-congenital-heart-disease-a-new-approach
#9
Israel Valverde, Tarinee Tangcharoen, Tarique Hussain, Hubrecht de Bliek, Graeme Penney, Marcel Breeuwer, Tobias Schaeffter, Reza Razavi, Gerald Greil
OBJECTIVES: To compare a standard sequential 2D Planning Method (2D-PM) with a 3D offline Planning Method (3D-PM) based on 3D contrast-enhanced magnetic resonance angiography (CE-MRA) in children with congenital heart disease (CHD). DESIGN: In 14 children with complex CHD (mean: 2.6 years, range: 3 months to 7.6 years), axial and coronal cuts were obtained with single slice spin echo sequences to get the final double oblique longitudinal cut of the targeted anatomical structure (2D-PM, n = 31)...
January 2017: JRSM Cardiovascular Disease
https://www.readbyqxmd.com/read/28485928/phase-tunable-synthesis-of-monodisperse-ypo4-ln-3-ln-ce-eu-tb-micro-nanocrystals-via-topotactic-transformation-route-with-multicolor-luminescence-properties
#10
Baiqi Shao, Yang Feng, Shuang Zhao, Senwen Yuan, Jiansheng Huo, Wei Lü, Hongpeng You
A novel aqueous-based and phase-selected synthetic strategy toward YPO4:Ln(3+) (Ln = Ce, Eu, Tb) micro/nanocrystals was developed by selecting specific precursors whose structure topotactically matches with the target ones. It was found that layered yttrium hydroxide (LYH) induced the formation of hexagonal-phased h-YPO4·0.8H2O with the crystalline relationship of [001]LYH//[0001]h-YPO4·0.8H2O, while the amorphous Y(OH)CO3 favored the formation of tetragonal-phased t-YPO4. We also systematically investigated the influence of Na2CO3/NaH2PO4 feeding ratio on the evolutions of morphology and size of the h-YPO4·0...
May 9, 2017: Inorganic Chemistry
https://www.readbyqxmd.com/read/28475336/performance-of-td-dft-for-excited-states-of-open-shell-transition-metal-compounds
#11
Bingbing Suo, Kaiyuan Shen, Zhendong Li, Wenjian Liu
Time-dependent density functional theory (TD-DFT) has been very successful in accessing low-lying excited states of closed-shell systems. However, it is much less so for excited states of open-shell systems: unrestricted Kohn-Sham based TD-DFT (U-TD-DFT) often produces physically meaningless excited states due to heavy spin contaminations, whereas restricted Kohn-Sham based TD-DFT often misses those states of lower energies. A much better variant is the explicitly spin-adapted TD-DFT (X-TD-DFT) [J. Chem. Phys...
May 16, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28474727/energy-flow-in-peptides-after-uv-photoexcitation-of-backbone-linkages
#12
Klavs Hansen, Camilla Skinnerup Byskov, Steen Brøndsted Nielsen
We report on the dissociation channels after UV photoexcitation of peptide cations tagged with 18-crown-6 ether (CE). The model peptides chosen for study were singly protonated (Ala)n-Pro (n = 1, 2, 3) and Pro-Pro (Ala = alanine, Pro = proline) that all contain at least one tertiary amide group with high absorption cross section at 210 nm (5.90 eV). Statistical dissociation was identified from the loss of CE, a process occuring remotely from the initial site of excitation, and therefore requiring flow of energy to the ammonium group where the CE is bound...
May 5, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28470274/reduction-and-oxidation-of-au-adatoms-on-the-ceo2-111-surface-dft-u-versus-hybrid-functionals
#13
Christopher Penschke, Joachim Paier
Recently we showed that Au atoms may titrate Ce(3+) ions in near-surface layers of reduced CeO2(111). This surface contained oxygen vacancies in subsurface position within the topmost O-Ce-O trilayer [Pan et al., Phys. Rev. Lett., 2013, 111, 206101.]. The present work builds upon these findings and discusses additional results obtained using PBE+U and hybrid functionals. These approaches do not predict the same relative stabilities for the various adsorption sites of a single Au adatom at an O-defect concentration of a ¼ ML or 1...
May 17, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/28469069/the-dinuclear-scandium-iii-cyclooctatetraenyl-chloride-complex-di-%C3%AE-chlorido-bis-%C3%AE-8-cyclooctatetraene-tetrahydrofuran-%C3%AE%C2%BAo-scandium-iii
#14
Zheng Zhou, Joshua Greenough, Zheng Wei, Marina A Petrukhina
Only a few cyclooctatetraene dianion (COT) π-complexes of lanthanides have been crystallographically characterized. This first single-crystal X-ray diffraction characterization of a scandium(III) COT chloride complex, namely di-μ-chlorido-bis[(η(8)-cyclooctatetraene)(tetrahydrofuran-κO)scandium(III)], [Sc2(C8H8)2Cl2(C4H8O)2] or [Sc(COT)Cl(THF)]2 (THF is tetrahydrofuran), (1), reveals a dimeric molecular structure with symmetric chloride bridges [average Sc-Cl = 2.5972 (7) Å] and a η(8)-bound COT ligand...
May 1, 2017: Acta Crystallographica. Section C, Structural Chemistry
https://www.readbyqxmd.com/read/28455630/relationship-between-carotid-plaque-surface-morphology-and-perfusion-a-3d-dce-mri-study
#15
Jianmin Yuan, Gregory Makris, Andrew Patterson, Ammara Usman, Tilak Das, Andrew Priest, Zhongzhao Teng, Sarah Hilborne, Dario Prudencio, Jonathan Gillard, Martin Graves
OBJECTIVE: This study aims to explore the relationship between plaque surface morphology and neovascularization using a high temporal and spatial resolution 4D contrast-enhanced MRI/MRA sequence. MATERIALS AND METHODS: Twenty one patients with either recent symptoms or a carotid artery stenosis ≥40% were recruited in this study. Plaque surface morphology and luminal stenosis were determined from the arterial phase MRA images. Carotid neovascularization was evaluated by a previously validated pharmacokinetic (PK) modeling approach...
April 28, 2017: Magma
https://www.readbyqxmd.com/read/28455160/long-term-follow-up-results-of-stepwise-radical-endoscopic-resection-for-barrett-s-esophagus-with-early-neoplasia
#16
Kamar Belghazi, Frederike G I van Vilsteren, Bas L A M Weusten, Sybren L Meijer, Jacques J G H M Bergman, Roos E Pouw
BACKGROUND & AIMS: Stepwise radical endoscopic resection (SRER) has shown to be effective in eradicating Barrett's esophagus (BE) and its associated dysplasia. The aim of this study was to assess the long-term durability after successful SRER for early Barrett's neoplasia. METHODS: Patients who were treated with SRER for BE ≤5 cm with high-grade dysplasia (HGD) or early cancer (EC) and had reached complete eradication of intestinal metaplasia (CE-IM) and neoplasia (CE-neo) were included...
April 25, 2017: Gastrointestinal Endoscopy
https://www.readbyqxmd.com/read/28451903/a-single-l288i-substitution-in-the-fusion-protein-of-bovine-parainfluenza-virus-type-3-enhances-virus-growth-in-semi-suitable-cell-lines
#17
Ryosuke Matsuura, Marina Takada, Takehiro Kokuho, Takamitsu Tsuboi, Ken-Ichiro Kameyama, Kaoru Takeuchi
The bovine parainfluenza virus type 3 BN-CE vaccine strain was obtained by serial passage of the BN-1 strain in chicken embryonic fibroblasts (CEF). We previously identified a substitution (L288I) in the fusion (F) protein between the two strains. To examine the effect of the substitution on CEF adaptation and attenuation, we generated a recombinant BN-1 strain with the L288I substitution in the F protein (F(L288I)-EGFP). F(L288I)-EGFP replicated more efficiently than a recombinant BN-1 strain (wt-EGFP) in semi-suitable cell lines, suggesting that the L288I substitution was established in the BN-1 strain during the process of adaptation in CEF...
April 27, 2017: Archives of Virology
https://www.readbyqxmd.com/read/28440786/magnetic-and-transport-properties-of-layered-compound-ce-sub-2-sub-te-sub-5-sub
#18
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
#19
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
#20
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
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