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Yue Mu, Amirhomayoun Saffarzadeh, Takayuki Shimaoka
This research focused on the mineral phase transformation under varied ignition conditions with the objective of estimating loss-on-ignition (LOI) parameter in municipal solid waste incineration (MSWI) fly ash residues. LOI is commonly used to measure the volatile species, unburned carbon and moisture in the solid materials. There are criteria for LOI measurement in some research fields, while there is no standard protocol for LOI measurement in MSWI fly ash. Using thermogravimetry technique, the ignition condition candidates were proposed at 440/700/900°C for 1 and 2h...
October 11, 2016: Waste Management
S Mahjoub, B Dunet, P Thoreux, A C Masquelet
Perilunate fracture-dislocation is rare. We report the case of a 24-year-old male who fell from his motorcycle and presented with a transverse lunate fracture with perilunate ligament damage. The initial diagnosis based on X-rays was confirmed by CT scan. A dorsal approach was used to obtain good reduction, double screw fixation and ligament reinsertion protected by temporary K-wires. To the best of our knowledge, this is the first case of transverse lunate fracture within perilunate fracture-dislocation. The patient returned to normal activities after 6 months...
June 2016: Hand Surgery and Rehabilitation
L Athlani, E Gaisne, P Bellemère
The TACTYS(®) implant is a new anatomic gliding articular and modular prosthesis for the proximal interphalangeal (PIP) joint. We report preliminary results with a minimum follow-up of 2 years. Twenty-two patients with a mean age of 63 years were operated on at a single center by two senior hand surgeons. Indications were painful and stiff PIP joints. The joint damage was caused by osteoarthritis (18 cases), post-traumatic arthritis (3) and rheumatoid arthritis (1). All prostheses were implanted through a dorsal mid-line transtendinous approach...
June 2016: Hand Surgery and Rehabilitation
Maria B Mesch, Kilian Bärwinkel, Yaşar Krysiak, Charlotte Martineau, Francis Taulelle, Reinhard B Neder, Ute Kolb, Jürgen Senker
Poly(triazine imide) with incorporated lithium chloride has recently attracted substantial attention due to its photocatalytic activity for water splitting. However, an apparent H/Li disorder prevents the delineation of structure-property relationships, for example, with respect to band-gap tuning. Herein, we show that through a combination of one- and two-dimensional, multinuclear solid-state NMR spectroscopy, chemical modelling, automated electron diffraction tomography, and an analysis based on X-ray pair distribution functions, it is finally possible to resolve the H/Li substructure...
October 13, 2016: Chemistry: a European Journal
Yaojin Wang, Lijun Chen, Guoliang Yuan, Haosu Luo, Jiefang Li, D Viehland
The new generation of ternary Pb(In1/2Nb1/2)O3-Pb(Mg1/3Nb2/3)O3-PbTiO3 ferroelectric single crystals have potential applications in high power devices due to their surperior operational stability relative to the binary system. In this work, a reversible, large electric field induced strain of over 0.9% at room temperature, and in particular over 0.6% above 380 K was obtained. The polarization rotation path and the phase transition sequence of different compositions in these ternary systems have been determined with increasing electric field applied along [001] direction based on x-ray diffraction data...
October 13, 2016: Scientific Reports
Yu Wang, Zi-Yuan Liu, Wan-Chen Dou, Wen-Bin Ma, Ren-Zhi Wang, Yi Guo
<strong>Objective</strong> To explore the efficacy of target positioning by preoperative CT/MRI image fusion technique in deep brain stimulation.<strong>Methods</strong> We retrospectively analyzed the clinical data and images of 79 cases (68 with Parkinson's disease, 11 with dystonia) who received preoperative CT/MRI image fusion in target positioning of subthalamic nucleus in deep brain stimulation. Deviation of implanted electrodes from the target nucleus of each patient were measured...
September 20, 2016: Chinese Medical Sciences Journal, Chung-kuo i Hsüeh K'o Hsüeh Tsa Chih
Peter Antal, Bohuslav Drahoš, Radovan Herchel, Zdeněk Trávníček
Three mononuclear lanthanide complexes of a 2-pyridylmethyl pendant-armed 15-membered ligand {(3,12-bis(2-pyridylmethyl)-3,12,18-triaza-6,9-dioxabicyclo-[12.3.1]octadeca-1,14,16-triene); L} with general formula [Ln(L)(H2O)(NO3)](NO3)2 (Ln = Tb (1), Dy (2), and Er (3)) are reported. Based on X-ray diffraction analysis of 1 and 2, the central lanthanide atoms are nine-coordinated with the N5O4 donor set originating from the ligand L and one coordinated water molecule and one monodentate-bonded nitrato ligand...
September 27, 2016: Dalton Transactions: An International Journal of Inorganic Chemistry
Atsushi Suzuki, Yoshinobu Uno, Shuji Takahashi, Jane Grimwood, Jeremy Schmutz, Shuji Mawaribuchi, Hitoshi Yoshida, Kimiko Takebayashi-Suzuki, Michihiko Ito, Yoichi Matsuda, Daniel Rokhsar, Masanori Taira
Extracellular factors belonging to the TGF-β family play pivotal roles in the formation and patterning of germ layers during early Xenopus embryogenesis. Here, we show that the vg1 (gdf1) and nodal3 genes of Xenopus laevis are present in gene clusters on chromosomes XLA1L and XLA3L, respectively, and that both gene clusters have been completely lost from the syntenic S chromosome regions. The presence of gene clusters and chromosome-specific gene loss were confirmed by cDNA FISH analyses. Sequence and expression analyses revealed that paralogous genes in the vg1 and nodal3 clusters on the L chromosomes were also altered compared to their Xenopus tropicalis orthologs...
October 5, 2016: Developmental Biology
J F Gutiérrez-Corona, P Romo-Rodríguez, F Santos-Escobar, A E Espino-Saldaña, H Hernández-Escoto
Chromium (Cr) is a highly toxic metal for microorganisms as well as plants and animal cells. Due to its widespread industrial use, Cr has become a serious pollutant in diverse environmental settings. The hexavalent form of the metal, Cr(VI), is considered a more toxic species than the relatively innocuous and less mobile Cr(III) form. The study of the interactions between microorganisms and Cr has been helpful to unravel the mechanisms allowing organisms to survive in the presence of high concentrations of Cr(VI) and to detoxify and remove the oxyanion...
December 2016: World Journal of Microbiology & Biotechnology
Dieter H Pahr, Philippe K Zysset
Beyond bone mineral density (BMD), bone quality designates the mechanical integrity of bone tissue. In vivo images based on X-ray attenuation, such as CT reconstructions, provide size, shape, and local BMD distribution and may be exploited as input for finite element analysis (FEA) to assess bone fragility. Further key input parameters of FEA are the material properties of bone tissue. This review discusses the main determinants of bone mechanical properties and emphasizes the added value, as well as the important assumptions underlying finite element analysis...
October 6, 2016: Current Osteoporosis Reports
F Bencivenga, A Calvi, F Capotondi, R Cucini, R Mincigrucci, A Simoncig, M Manfredda, E Pedersoli, E Principi, F Dallari, R A Duncan, M G Izzo, G Knopp, A A Maznev, G Monaco, S Di Mitri, A Gessini, L Giannessi, N Mahne, I P Nikolov, R Passuello, L Raimondi, M Zangrando, C Masciovecchio
The development of free electron laser (FEL) sources has provided an unprecedented bridge between the scientific communities working with ultrafast lasers and extreme ultraviolet (XUV) and X-ray radiation. Indeed, in recent years an increasing number of FEL-based applications have exploited methods and concepts typical of advanced optical approaches. In this context, we recently used a seeded FEL to demonstrate a four-wave-mixing (FWM) process stimulated by coherent XUV radiation, namely the XUV transient grating (X-TG)...
September 19, 2016: Faraday Discussions
Rio Ito, Kouichi Kuroda, Haruka Hashimoto, Mitsuyoshi Ueda
Biological technologies for recycling rare metals, which are essential for high-tech products, have attracted much attention because they could prove to be more environmentally friendly and energy-saving than other methods. We have developed biological recycling technologies by cell surface engineering for the selective recovery of toxic heavy metal ions and rare metal ions from aqueous wastes. In this study, we aimed to construct a unique biological technique to recover rare metals 'in solid' form by reducing rare metal ions, leading to a practical next-generation recovery system...
December 2016: AMB Express
Wei Wang, Jian Li, Ransheng Liu, Aixu Zhang, Zhiyong Yuan
Polyamidoamine (PAMAM)-entrapped Au nanoparticles were synthesized with distinct sizes to figure out the size effect of Au-based contrast agent on CT imaging of passively targeted tissues. Au/PAMAM nanoparticles were first synthesized with narrow distribution of particles size of 22.2 ± 3.1, 54.2 ± 3.7, and 104.9 ± 4.7 nm in diameters. Size effect leads no significant difference on X-ray attenuation when Au/PAMAM was ≤0.05 mol/L. For CT imaging of a tumor model, small Au/PAMAM were more easily internalized via endocytosis in the liver, leading to more obviously enhanced contrast...
December 2016: Nanoscale Research Letters
Atsuko Nishimoto, Yohei Otaka, Shoko Kasuga, Eri Otaka, Kotaro Yamazaki, Junichi Ushiba, Meigen Liu
Robotics is an emerging field in rehabilitation medicine. Robots have the potential to complement traditional clinical assessments because they can measure functions more precisely and quantitatively than current clinical assessments. We present a patient with a proximal humeral fracture whose recovery process was evaluated with an exoskeleton robotic device. The patient, a 34-year-old woman, suffered a left proximal humeral fracture while snowboarding. She is an occupational therapist and is the first author of this study...
2016: Keio Journal of Medicine
Hans K H Ng, Kaleeckal G Harikumar, Laurence J Miller, Billy K C Chow
The involvement of secretin (SCT) and secretin receptor (SCTR) in regulating body water homeostasis is well established. Identified as one of the vasopressin (Vp)-independent mechanisms in fluid balance, SCT regulates aquaporin 2 (AQP2) in the kidney distal collecting duct cells through activating intracellular cAMP production. This ability to bypass Vp-mediated water reabsorption in kidney implicates SCT's potential to treat nephrogenic diabetes insipidus (NDI). Research on NDI in the past has largely been focused on the searching for mutations in vasopressin receptor 2 (AVPR2), while the functional relationship between SCTR, AVPR2 and NDI remains unclear...
2016: PloS One
Zewen Xiao, Weiwei Meng, David B Mitzi, Yanfa Yan
Synthesis of cubic-phase AgBi2I7 iodobismuthate thin films and fabrication of air-stable Pb-free solar cells using the AgBi2I7 absorber have recently been reported. On the basis of X-ray diffraction (XRD) analysis and nominal composition, it was suggested that the synthesized films have a cubic ThZr2H7 crystal structure with AgBi2I7 stoichiometry. Through careful examination of the proposed structure and computational evaluation of the phase stability and bandgap, we find that the reported "AgBi2I7" films cannot be forming with the ThZr2H7-type structure, but rather more likely adopt an Ag-deficient AgBiI4 type...
October 6, 2016: Journal of Physical Chemistry Letters
Jakub Szlachetko, Joanna Hoszowska, Jean-Claude Dousse, Maarten Nachtegaal, Wojciech Błachucki, Yves Kayser, Jacinto Sà, Marc Messerschmidt, Sebastien Boutet, Garth J Williams, Christian David, Grigory Smolentsev, Jeroen A van Bokhoven, Bruce D Patterson, Thomas J Penfold, Gregor Knopp, Marek Pajek, Rafael Abela, Christopher J Milne
X-ray techniques have evolved over decades to become highly refined tools for a broad range of investigations. Importantly, these approaches rely on X-ray measurements that depend linearly on the number of incident X-ray photons. The advent of X-ray free electron lasers (XFELs) is opening the ability to reach extremely high photon numbers within ultrashort X-ray pulse durations and is leading to a paradigm shift in our ability to explore nonlinear X-ray signals. However, the enormous increase in X-ray peak power is a double-edged sword with new and exciting methods being developed but at the same time well-established techniques proving unreliable...
2016: Scientific Reports
E Lähderanta, E Hajdeu-Chicarosh, M A Shakhov, M Guc, I V Bodnar, E Arushanov, K G Lisunov
Resistivity, ρ(T, x), of Cu2Zn(Sn x Ge1-x )Se4 (CZTGeSe) single crystals with x  =  0-1, investigated at temperatures between T ~ 10-320 K, exhibits an activated character within the whole temperature range, attaining a minimum at x  =  0.47. Magnetoresistance (MR) of CZTGeSe with x  =  0.26, 0.47 and 0.64 is positive (pMR) in all measured fields of B up to 20 T at any T between ~40-320 K, whereas MR of samples with x  =  0 and 1 contains a negative contribution (nMR). The dependence of ρ(T) at B  =  0 gives evidence for a nearest-neighbor hopping (NNH) conductivity in high-temperature intervals within T ~ 200-320 K depending on x, followed by the Mott variable-range hopping (VRH) charge transfer with lowering temperature...
November 16, 2016: Journal of Physics. Condensed Matter: An Institute of Physics Journal
K Karaman, S Karaman, A Üner, I Ece
Objectives: We aimed to assess whether the widened carina angle displayed on X-ray supports the presumptive presence of patent ductus arteriosus. Methods: The study group was arranged by 60 infants under 37 weeks diagnosed with haemodynamically significant patent ductus arteriosus. The control group was constituted by 60 infants with no clinical or echocardiographic evidence of patent ductus arteriosus. In both groups, the location of the left main bronchus was assessed by measuring the angle between two main bronchi at the level of carina...
January 8, 2016: West Indian Medical Journal
Bojan Gopalakrishnan, Sruthi Mohan, Ramarao Parella, Srinivasarao Arulananda Babu
The diastereoselective Pd(OAc)2-catalyzed, bidentate ligand-directed sp(3) C-H activation/arylation followed by ring opening of cyclopropanecarboxamides, which were assembled from cyclopropanecarbonyl chlorides and bidentate ligands (e.g., 8-aminoquinoline and 2-(methylthio)aniline), has been investigated. The treatment of various cyclopropanecarboxamides with excess amounts of aryl iodides in the presence of the Pd(OAc)2 catalyst, AgOAc and AcOH directly afforded the corresponding multiple β-C-H arylated open-chain carboxamides (anti β-acyloxy amides)...
October 7, 2016: Journal of Organic Chemistry
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