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Giovanni Di Teodoro, Giuseppe Marruchella, Andrea Di Provvido, Gianluca Orsini, Gaetano Federico Ronchi, Anna Rita D'Angelo, Nicola D'Alterio, Flavio Sacchini, Massimo Scacchia
Contagious bovine pleuropneumonia (CBPP) is a severe disease caused by Mycoplasma mycoides subsp. mycoides (Mmm). Knowledge on CBPP pathogenesis is fragmented and hampered by the limited availability of laboratory animal and in vitro models of investigation. The purpose of the present study is to assess respiratory explants as useful tools to study the early stages of CBPP. Explants were obtained from trachea, bronchi and lungs of slaughtered cattle, tested negative for Mycoplasma spp. and for the major bacterial and viral respiratory pathogens...
January 12, 2018: Veterinary Research
V Skrypko, A Kovalenko, E Talikova
The objective of this research was to study changes in parameters, characterizing endogenous intoxication in patients with acute small bowel obstruction with Reamberin included into therapy scheme. Full physical examination and surgical treatment of 202 patients with acute small bowel obstruction were conducted. The control group included 30 healthy individuals. Dynamics of such clinical biochemical parameters as medium mass molecules (MMM), malondialdehyde (MDA), diene conjugates (DC) in blood serum were analyzed in preoperative period and on the 1st, 5th and 14th day of postoperative period...
December 2017: Georgian Medical News
Shengxuan Huang, Xiang Wu, Shan Qin
Oxygen is thought to be an important light element in Earth's core but the amount of oxygen in Earth's core remains elusive. In addition, iron-rich iron oxides are of great interest and significance in the field of geoscience and condensed matter physics. Here, static calculations based on density functional theory demonstrate that I4/mmm-Fe2O is dynamically and mechanically stable and becomes energetically favorable with respect to the assemblage of hcp-Fe and [Formula: see text]-FeO above 270 GPa, which indicates that I4/mmm-Fe2O can be a strong candidate phase for stable iron-rich iron oxides at high pressure, perhaps even at high temperature...
January 10, 2018: Scientific Reports
Qian Hu, Yingqi Ye, Qian Zhao, Yonggang Meng
The electromagnetic properties of interfaces in MEMS (microelectromechanical systems) directly determine the Casimir force between them, therefore the construction of the electromagnetic surface is particularly significant. We theoretically utilize non-monodisperse magnetic nanoparticles to construct meta-metamaterial (MMM) surface to obtain a repulsive force, which can be adjusted by an external magnetic field. According to Lifshitz's theory, we have discovered that influence of the distribution of particle size on the Casimir force is related to the expectation of particle size, and Casimir repulsion will decrease when taking into account the anisotropy of electromagnetic parameters for MMM plate...
January 10, 2018: Journal of Physics. Condensed Matter: An Institute of Physics Journal
Xiang Zhu, Yinying Hua, Chengcheng Tian, Carter W Abney, Peng Zhang, Tian Jin, Gongping Liu, Katie L Browning, Robert L Sacci, Gabriel M Veith, Hong-Cai Zhou, Wanqin Jin, Sheng Dai
Achieving homogeneous dispersion of nanoporous fillers within membrane architectures remains a great challenge for mixed-matrix membrane (MMMs) technology. Imparting solution processability of nanoporous materials would help advance the development of MMMs for membrane-based gas separations. For the first time, we report a novel mechanochemical-assisted oxidative coupling polymerization strategy to create a new family of soluble nanoporous polymer networks. The solid-state ball-milling methodology affords inherent control over polymer growth and therefore provides tunable solubility in the resulting nanoporous frameworks...
December 29, 2017: Angewandte Chemie
Nian-Tzu Suen, Linna Huang, John J Meyers, Svilen Bobev
Reported are the synthesis and the crystal structures of the new ternary phases Sr3Cd8Ge4 and Eu3Cd8Ge4. The structures of both compounds have been established by single-crystal and powder X-ray diffraction methods. They crystallize in the tetragonal space group I4/mmm (No. 139, own structure type, Pearson symbol tI30) with Z = 2, and lattice parameters as follows: a = 4.4941(14) Å; c = 35.577(7) Å for Sr3Cd8Ge4, and a = 4.4643(12) Å; c = 35.537(9) Å for Eu3Cd8Ge4, respectively. The most prominent feature of the structure is the complex [Cd2Ge] polyanionic framework, derived by unique ordering of the Cd and Ge atoms in fragments that bear resemblance to the BaAl4 structure type...
December 26, 2017: Inorganic Chemistry
Sanjith Unithrattil, Paulraj Arunkumar, Yoon Hwa Kim, Ha Jun Kim, Ngoc Hung Vu, Jaeyeong Heo, Woon Jin Chung, Won Bin Im
NaCa3PSiO8 was synthesized in a microwave-assisted solid-state reaction. The crystal structure of the synthesized compound was solved using a least-squares method, followed by simulated annealing. The compound was crystallized in the orthorhombic space group Pna21, belonging to Laue class mmm. The structure consisted of two layers of cation planes, each of which contained three cation channels. The cation channels in each of the layers ran antiparallel to that of the adjacent layer. All the major cations together constituted four distinct crystallographic sites...
December 1, 2017: Inorganic Chemistry
Sarah E Goodman, Christopher J Hasson
There is an old saying that you must walk a mile in someone's shoes to truly understand them. This mini-review will synthesize and discuss recent research that attempts to make humans "walk a mile" in an artificial musculoskeletal system to gain insight into the principles governing human movement control. In this approach, electromyography (EMG) is used to sample human motor commands; these commands serve as inputs to mathematical models of muscular dynamics, which in turn act on a model of skeletal dynamics to produce a simulated motor action in real-time (i...
2017: Frontiers in Human Neuroscience
T Phuong Quan, Zharain Bawa, Dona Foster, Tim Walker, Carlos Del Ojo Elias, Priti Rathod, Zamin Iqbal, Phelim Bradley, Janet Mowbray, A Sarah Walker, Derrick W Crook, David H Wyllie, Timothy E A Peto, E Grace Smith
Use of whole genome sequencing (WGS) for routine Mycobacterial species identification and drug susceptibility testing (DST) is becoming a reality. We compared performance of WGS and standard laboratory workflows prospectively, by parallel processing at a major Mycobacterial Reference Service over one year, for species identification, first-line Mycobacterium tuberculosis (TB) resistance prediction, and turnaround time. Of 2039 isolates with line-probe results for species identification, 74 (3.6%) failed sequencing or WGS species identification...
November 22, 2017: Journal of Clinical Microbiology
E Perret, K Sen, J Khmaladze, B P P Mallett, M Yazdi-Rizi, P Marsik, S Das, I Marozau, M A Uribe-Laverde, R de Andrés Prada, J Strempfer, M Döbeli, N Biškup, M Varela, Y-L Mathis, C Bernhard
We studied the structural, magnetic and electronic properties of [Formula: see text] (SFO) thin films and [Formula: see text]/[Formula: see text] [Formula: see text]MnO3 (LCMO) superlattices that have been grown with pulsed laser deposition (PLD) on [Formula: see text] [Formula: see text] [Formula: see text] [Formula: see text] [Formula: see text] (LSAT) substrates. X-ray reflectometry and scanning transmission electron microscopy (STEM) confirm the high structural quality of the films and flat and atomically sharp interfaces of the superlattices...
November 14, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
Sebastian Friebe, Alexander Mundstock, Kai Volgmann, Jürgen Caro
Metal-Organic Frameworks feature a certain framework flexibility, mainly due to a linker mobility inside the lattice. The latter is responsible for effects like breathing or gate-opening, thus making predictions of the sorption and diffusion behavior quite difficult. Permeation measurements on supported UiO-66 membranes at low temperatures and on polymer-coated UiO-66 membrane layers as well as 2H-NMR line shape studies and nitrogen sorption measurements of UiO-66 with deuterated linkers in Matrimid as Mixed-Matrix Membrane (MMM) indicate that the 2-site 180° flips (-flips) of the aromatic ring are hindered by the presence of (i) the surrounding polymer Matrimid and (ii) residual solvent molecules, thus giving profound insights in the molecular understanding of gas transport through Metal-Organic Framework based MMMs...
November 7, 2017: ACS Applied Materials & Interfaces
Xiaofeng Li, Feng Peng
The study of the high-temperature superconductive property in compressed hydrogen (H)-rich hydrides has been motivated by hydrides, which become superconducting at low pressure due to chemical precompression. In the present study, we report the first-principles structure searches for stable vanadium(V) hydrides over a pressure scope 0-200 GPa, where stable unexpected stoichiometries of H-rich V hydrides (e.g., VH3, VH5, and VH8) emerge. These dense H-rich V hydrides are metallic with a strong ionic feature, and the coordination number of metal V gradually increases with H content...
November 2, 2017: Inorganic Chemistry
Daniele la Cecilia, Federico Maggi
Glyphosate (GLP) herbicide leaching into soil can undergo abiotic degradation and two enzymatic oxidative or hydrolytic reactions in both aerobic and anaerobic conditions; biotic oxidation produces aminomethylphosphonic acid (AMPA). Both GLP and AMPA are phytotoxic. A comprehensive GLP degradation reaction network was developed from the literature to account for the above pathways, and fifteen experimental data sets were used to determine the corresponding Michaelis-Menten-Monod (MMM) kinetic parameters. Various sensitivity analyses were designed to assess GLP and AMPA degradation potential against O2 (aq) and carbon (C) availability, pH, and birnessite mineral content, and showed that bacteria oxidized or hydrolyzed up to 98% of GLP and only 9% of AMPA...
November 5, 2017: Environmental Pollution
Dong Chen, Hongzhi Xie, Shuyang Zhang, Weisheng Chen, Lixu Gu
Respiratory motion estimation plays a significant role in radiation therapy. Previous motion estimation approaches usually depended on 4DCT, which introduced extra radio dose for patients, and the local motion details were ignored in the statistical model. In this paper, we propose a novel estimation framework, which employs the Sparse Motion Field Presentation (SMFP) method to obtain a coarse motion estimation which preserves patient-specific respiratory motion details and an Adaptive Variable Coefficient (AVC) motion prior registration approach is applied for the accurate estimation...
July 2017: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
Jinsong He, Anan Cui, Shihuai Deng, J Paul Chen
Dye containing wastewater has increasingly become an important contamination due to operation of various industries such as textile industry. In this study, a micro-scale biochar particles/polysulfone mixed matrix hollow fiber membrane (MMM) was applied for the removal of methylene blue from water. The static and dynamic adsorption performance was investigated. We found that the MMM exhibited a high removal efficiency of methylene blue under a wide pH range of 4-10. The adsorption process on biochar and MMM obeyed the intraparticle surface diffusion model and Langmuir isotherm model...
September 28, 2017: Journal of Colloid and Interface Science
Jianwei Yuan, Haipeng Zhu, Jiajia Sun, Yangyang Mao, Gongping Liu, Wanqin Jin
Because of the high separation performance and easy preparation, mixed-matrix membranes (MMMs) consisting of metal-organic frameworks have received much attention. In this article, we report a novel ZIF-300/PEBA MMM consisting of zeolite imidazolate framework (ZIF-300) crystals and polyether block amide (PEBA) matrix. The ZIF-300 crystal size was effectively reduced by optimizing the hydrothermal reaction condition from ∼15 to ∼1 μm. The morphology and physicochemical and sorption properties of the synthesized ZIF-300 crystals and as-prepared ZIF-300/PEBA MMMs were systematically studied...
November 8, 2017: ACS Applied Materials & Interfaces
Edith Perret, Kaushik Sen, Jarji Khmaladze, Ben Mallett, Meghdad Yazdi-Rizi, Premysl Marsik, Saikat Das, Ivan Marozau, Miguel Uribe-Laverde, Roberto de Andrés Prada, J Strempfer, Max Doebeli, Neven Biskup, Maria Varela, Yves-Laurent Mathis, Christian Bernhard
We studied the structural, magnetic and electronic properties of SrFeO<sub>3-δ</sub> (SFO) thin films and SrFeO<sub>3-δ</sub> /La<sub>2/3</sub>Ca<sub>1/3</sub>MnO<sub>3</sub> (LCMO) superlattices that have been grown with pulsed laser deposition (PLD) on La<sub>0.3</sub>Sr<sub>0.7</sub>Al<sub>0.65</sub>Ta<sub>0.35</sub>O<sub>3</sub> (LSAT) substrates. X-ray reflectometry and scanning transmission electron microscopy (STEM) confirm the high structural quality of the films and flat and atomically sharp interfaces of the superlattices...
October 16, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
Seng Beng Tan, David Paul Capelle, Nor Zuraida Zainal, Ee Jane Lim, Ee Chin Loh, Chee Loong Lam
Alleviation of suffering in palliative care needs a combination of good symptom control and psychosocial care. The capacity of mindfulness to promote psychological flexibility opens up possibilities of creating a paradigm shift that can potentially change the landscape of psychosocial care. In this review, we attempt to introduce 4 methods to establish mindfulness based on 'The Discourse on the Foundations of Mindfulness', a core text of Theravada Buddhism, followed by a brief comparison of the concepts and practices of mindfulness in different cultures and religions in Southeast Asia...
September 2017: Annals of the Academy of Medicine, Singapore
Duanduan Yuan, Ning Liu, Kunkun Li, Shifeng Jin, Jiangang Guo, Xiaolong Chen
Three new layered compounds, namely NaLiFeSe2, KLiFeSe2, and RbLiFeSe2, have been discovered. NaLiFeSe2 adopts a trigonal CaAl2Si2-type structure with space group P3̅m1, while the other two possess a tetragonal ThCr2Si2-type structure with space group I4/mmm. Structural refinements reveal that Li and Fe atoms randomly occupy the same sites in all these compounds without ordering. It is found that the radius of the alkali metals plays a vital role in determining the symmetry of this series of compounds. The substitution of Li at the Fe site shortens the layer spacing and elongates the A-Se bond length in the ThCr2Si2-type structure...
November 6, 2017: Inorganic Chemistry
Tiziana Marino, Francesca Russo, Lina Rezzouk, Abderrazak Bouzid, Alberto Figoli
The aim of this work was the fabrication and the characterization of mixed matrix membranes (MMMs) for arsenic (As) removal from water. Membrane separation was combined with an adsorption process by incorporating the kaolin (KT2) Algerian natural clay in polymeric membranes. The effects of casting solution composition was explored using different amounts of polyethersufone (PES) as a polymer, polyvinyl-pyrrolidone (PVP K17) and polyethylene glycol (PEG 200) as pore former agents, N-methyl pyrrolidone (NMP) as a solvent, and kaolin...
September 30, 2017: Membranes
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