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Simon J Pope, Thomas Stonelake, Kaitlin Phillips, Simon Coles, Peter Horton, Shannon Keane, Emily Stokes, Ian Fallis, Joseph Beames, Jianzhang Zhao, Kepeng Chen, Yuqi Hou, Andrew Hallett, Sean O'Kell
A series of substituted 2-phenylquinoxaline ligands have been explored to finely tune the visible emission properties of a corresponding set of cationic, cyclometalated iridium(III) complexes. The electronic and redox properties of the complexes were investigated using experimental (including time-resolved luminescence and transient absorption spectroscopy) and theoretical methods. The complexes display absorption and phosphorescent emission in the visible region attributed to MLCT transitions. The different substitution patterns of the ligands induce variations in these parameters...
April 18, 2018: Chemistry: a European Journal
Lei Wang, Yueqing Wang, Mingguang Wu, Zengxi Wei, Chunyu Cui, Minglei Mao, Jintao Zhang, Xiaopeng Han, Quanhui Liu, Jianmin Ma
Zinc-air batteries with high-density energy are promising energy storage devices for the next generation of energy storage technologies. However, the battery performance is highly dependent on the efficiency of oxygen electrocatalyst in the air electrode. Herein, the N, F, and B ternary doped carbon fibers (TD-CFs) are prepared and exhibited higher catalytic properties via the efficient 4e- transfer mechanism for oxygen reduction in comparison with the single nitrogen doped CFs. More importantly, the primary and rechargeable Zn-air batteries using TD-CFs as air-cathode catalysts are constructed...
April 17, 2018: Small
Jiawei Lai, Xin Liu, Junchao Ma, Qinsheng Wang, Kenan Zhang, Xiao Ren, Yinan Liu, Qiangqiang Gu, Xiao Zhuo, Wei Lu, Yang Wu, Yuan Li, Ji Feng, Shuyun Zhou, Jian-Hao Chen, Dong Sun
Photodetectors based on Weyl semimetal promise extreme performance in terms of highly sensitive, broadband and self-powered operation owing to its extraordinary material properties. Layered Type-II Weyl semimetal that break Lorentz invariance can be further integrated with other two-dimensional materials to form van der Waals heterostructures and realize multiple functionalities inheriting the advantages of other two-dimensional materials. Herein, we report the realization of a broadband self-powered photodetector based on Type-II Weyl semimetal Td -MoTe2 ...
April 17, 2018: Advanced Materials
Ehab Mostafa Elzawawy, Melad Naim Kelada, Ahmed Farouk Al Karmouty
INTRODUCTION: Latissimus dorsi (LD) flap has been used for reconstructive purposes in oncoplastic breast surgery. Using large part of the muscle as a flap leads to a residual functional loss. Muscle sparing and mini LD flaps can be used with no functional sequelae. However, the design of such flap presents a challenge. METHODS: Twenty cadavers were dissected on both sides to identify the different vascular patterns of the thoracodorsal (TD) pedicle. The vessels were counted, and the following measurements were taken: diameter, length, distance from inferior angel of scapula, and vertebral level...
April 17, 2018: Annals of Plastic Surgery
Cong You, Fang Xia, Yue Zhao, Yin Zhang, Yongjian Sheng, Yipei Wu, Xiao-Chun Hang, Fei Chen, Huili Ma, Kang Shen, Zhengyi Sun, Takahiro Ueba, Satoshi Kera, Cong Zhang, Hong-Hai Zhang, Zhi-Kuan Chen, Wei Huang
The structural and photophysical properties of well-selected tetradentate Pt(II) frames including Pt(ppzOppz), Pt(ppzOpopy), Pt(ppzOczpy) and Pt(czpyOczpy) have been experimentally and theoretically explored in detail. Single crystal diffraction measurements of the four complexes provided accurate bond lengths, angles and other integrate structural information. Their characteristic electrochemical and photophysical information clearly revealed internal electronic levels in ground and excited states. Time dependent density functional theory (TD-DFT) uncovered electron distributions in transition process of excitation (S0→S1) and radiation (S1→T1→S0)...
April 17, 2018: Journal of Physical Chemistry Letters
Aneta Slodek, Anna Maroń, Michał Pająk, Marek Matussek, Iwona Grudzka-Flak, Jan Grzegorz Małecki, Anna Świtlicka, Stanisław Krompiec, Witold Danikiewicz, Małgorzata Grela, Izabela Gryca, Mateusz Penkala
Six novel fluoranthene derivatives, three terminally substituted and three bis(fluoranthenes) with fluorene, bithiophene and carbazole spacers were obtained via [2+2+2] cycloaddition and thoroughly characterized. Based on the conducted studies, the obtained derivatives can be classified as D-A (donor-acceptor) and A-D-A (acceptor-donor-acceptor) systems, where fluoranthene unit acts as an electron-withdrawing unit. The optical results revealed that novel fluoranthene derivatives absorb light in the range of 236-417 nm originating from ππ* transition within the conjugated system...
April 16, 2018: Chemistry: a European Journal
Samer Alabed, Youssef Latifeh, Husam Aldeen Mohammad, Hanna Bergman
BACKGROUND: Chronic antipsychotic drug treatment may cause tardive dyskinesia (TD), a long-term movement disorder. Gamma-aminobutyric acid (GABA) agonist drugs, which have intense sedative properties and may exacerbate psychotic symptoms, have been used to treat TD. OBJECTIVES: 1. Primary objectiveThe primary objective was to determine whether using non-benzodiazepine GABA agonist drugs for at least six weeks was clinically effective for the treatment of antipsychotic-induced TD in people with schizophrenia, schizoaffective disorder or other chronic mental illnesses...
April 17, 2018: Cochrane Database of Systematic Reviews
Chiara Ciochetto, Barbara Botto, Roberto Passera, Marilena Bellò, Giulia Benevolo, Carola Boccomini, Alessia Castellino, Annalisa Chiappella, Roberto Freilone, Maura Nicolosi, Lorella Orsucci, Clara Pecoraro, Patrizia Pregno, Gianni Bisi, Umberto Vitolo
Chemo-refractory NHL has a very poor outcome; the addiction of RIT to salvage regiment pre ASCT had recently demonstrated promising results.We performed a retrospective sequential study to determine the feasibility of standard Zevalin with BEAM in high-risk relapse/refractory NHL. A matched cohort analysis with a group treated with standard BEAM without Zevalin was performed as secondary endpoint. Between October 2006 and January 2013, 37 NHL patients at high risk for progression or early (< 1 year) or multiple relapses were treated with Z-BEAM and ASCT after R-DHAP or R-ICE as salvage therapy...
April 16, 2018: Annals of Hematology
J Michael Jumper, Pravin U Dugel, Sanford Chen, Kevin J Blinder, John G Walt
Purpose: To evaluate the efficacy, safety, and injection frequency of vascular endothelial growth factor (VEGF) antagonists in the treatment of macular edema secondary to retinal vein occlusion (RVO) in clinical practice. Patients and methods: A multicenter retrospective study of the medical records of 165 patients (95 branch RVO, 70 central RVO) treated with at least three anti-VEGF injections in the study eye was conducted. Available data collected for at least 6 months after the first injection included Snellen best-corrected visual acuity (BCVA), central retinal thickness (CRT) by time-domain optical coherence tomography (TD-OCT) or spectral-domain optical coherence tomography (SD-OCT), anti-VEGF injections, other treatments/procedures for RVO, and adverse events...
2018: Clinical Ophthalmology
A Moura Neto, T G Bovi, C M Righetto, A R Fiore, L T Lot, S R Perales, E C de Ataide, I F S F Boin
BACKGROUND: There is mutual influence between the liver and thyroid hormone metabolism. Patients with diabetes mellitus (DM) also have an increased prevalence of thyroid disorders (TDs). The objectives of this study were to evaluate the frequency of TD before and after liver transplantation (LT) in a population of patients with DM as a whole and when categorized by sex. MATERIALS AND METHODS: This was a retrospective study involving interview and medical record analysis of 46 consecutive patients followed at the diabetes mellitus and liver transplantation unit of a tertiary university hospital...
April 2018: Transplantation Proceedings
Candida C Peterson, Henry M Wellman
Longitudinal tracking of 107 three- to-thirteen-year-olds in a cross-sequential design showed a 6-step theory of mind (ToM) sequence identified by a few past cross-sectional studies validly depicted longitudinal ToM development from early to middle childhood for typically developing (TD) children and those with ToM delays owing to deafness or autism. Substantively, all groups showed ToM progress throughout middle childhood. Atypical development was more extended and began and ended at lower levels than for TD children...
April 16, 2018: Child Development
F Degache, A Bonjour, D Michaud, L Mondada, C J Newman
PURPOSE: The objective of study was to determine the effect of tandem ski (TS) activity on postural control and cardiac activity in children with profound intellectual and multiple disabilities (PIMDs). METHOD: Twenty children with PIMD and 20 age-matched controls (typically developed (TD) children) participated. Body segment movements were measured with inertial sensors (Physilog®) placed on the head, C7, trunk (including ECG) and pelvis with a seat reference...
April 16, 2018: Developmental Neurorehabilitation
Christopher M Lemon, Seung Jun Hwang, Andrew G Maher, David C Powers, Daniel G Nocera
Main-group p-block metals are ideally suited for mediating two-electron reactions because they cycle between M n and M n+2 redox states, as the one-electron state is thermodynamically unstable. Here, we report the synthesis and structure of an SbIII corrole and its SbV X2 (X = Cl, Br) congeners. SbIII sits above the corrole ring, whereas SbV resides in the corrole centroid. Electrochemistry suggests interconversion between the SbIII and SbV X2 species. TD-DFT calculations indicate a HOMO → LUMO+2 parentage for excited states in the Soret spectral region that have significant antibonding character with respect to the Sb-X fragment...
April 16, 2018: Inorganic Chemistry
Geoffrey P Bingham, Winona Snapp-Childs
A large proportion of school-aged children exhibit poor drawing and handwriting. This prevalence limits the availability of therapy. We developed an automated method for training improved manual compliance control and relatedly, prospective control of a stylus. The approach included a difficult training task, while providing parametrically modifiable support that enables the children to perform successfully while developing good compliance control. The task was to use a stylus to push a bead along a 3D wire path...
April 12, 2018: Human Movement Science
Christophe Maïano, Olivier Hue, Danielle Tracey, Geneviève Lepage, Alexandre J S Morin, Grégory Moullec
BACKGROUND: Youth with Down syndrome are characterized by motor delays when compared to typically developing (TD) youth, which may be explained by a lower postural control or reduced postural tone. OBJECTIVE: In the present article, we summarize research comparing the static postural control, assessed by posturography, between youth with Down syndrome and TD youth. METHODS: A systematic literature search was performed in 10 databases and seven studies, published between 2001 and 2017, met our inclusion criteria...
March 16, 2018: Gait & Posture
Quan Wang, Daniel J Campbell, Suzanne L Macari, Katarzyna Chawarska, Frederick Shic
Background: Multiple eye-tracking studies have highlighted the "atypical" nature of social attention in autism. However, it is unclear how "atypical" or "typical" should be quantified. Methods: We developed a method for identifying moments when members of a group looked at similar places (High-Cohesion Time Frames; HCTFs). We defined typicality as the proximity of gaze points to typically developing (TD) gaze points during TD HCTFs...
2018: Molecular Autism
Jasmine Khouja, Sarah J Lewis, Carolina Bonilla
BACKGROUND: Research suggests there may be a genetic influence on the likelihood of becoming tanning dependent (TD). The way in which mothers regulate their children's sun exposure may be affected by being TD. We investigated the associations between single nucleotide polymorphisms (SNPs) related to being TD and early sun exposure. METHODS: Data from the Avon Longitudinal Study of Parents and Children (ALSPAC) were used. Associations between 17 TD related SNPs in children and their mothers and 10 sun exposure variables in children (assessed via questionnaire at age 8) were analyzed in logistic and ordinal logistic regressions...
April 12, 2018: BMC Medical Genetics
Yoshinori Matsuura, Michiyo Takehira, George I Makhatadze, Yasumasa Joti, Hisashi Naitow, Naoki Kunishima, Katsuhide Yutani
In order to elucidate the contribution of charged residues to protein stabilization at temperatures of over 100 °C, we constructed many mutants of the CutA1 protein ( EcCutA1) from Escherichia coli. The goal was to see if one can achieve the same stability as for a CutA1 from hyperthermophile Pyrococcus horikoshii that has the denaturation temperature near 150 °C. The hydrophobic mutant of EcCutA1 ( Ec0VV) with denaturation temperature (Td) of 113.2 °C was used as a template for mutations. The highest Td of Ec0VV mutants substituted by a single charged residue was 117...
April 12, 2018: Biochemistry
Rajarshi Mondal, Issiah B Lozada, Rebecca L Davis, J A Gareth Williams, David E Herbert
Benzannulated bidentate pyridine/phosphine ( P^N) ligands bearing quinoline or phenanthridine (3,4-benzoquinoline) units have been prepared, along with their halide-bridged, dimeric Cu(I) complexes of the form [( P^N)Cu]2 (μ-X)2 . The copper complexes are phosphorescent in the orange-red region of the spectrum in the solid-state under ambient conditions. Structural characterization in solution and the solid-state reveals a flexible conformational landscape, with both diamond-like and butterfly motifs available to the Cu2 X2 cores...
April 12, 2018: Inorganic Chemistry
Steve Ullmann, René Schnorr, Christian Laube, Bernd Abel, Berthold Kersting
The synthesis and photophysical properties of four new hybrid salicylaldiminato-calix[4]arene ligands and their corresponding zinc(ii) complexes are described. The Schiff bases were obtained from condensation reactions between cone-25,27-di(aminoethoxy)-26,28-dihydroxy-calix[4]arene and salicylaldehyde (H2L1) or o-vanillin (H2L2) and 1,3-alt-25,27-di(aminoethoxy)-26,28-di(n-propyloxy)-calix[4]arene and 3,5-di-tert-butyl-salicylaldehyde (H2L3) or o-vanillin (H2L4). Complexation reactions were investigated by ESI-MS, IR, NMR, UV-vis absorption and steady-state and time resolved fluorescence spectroscopy, and X-ray crystallography...
April 12, 2018: Dalton Transactions: An International Journal of Inorganic Chemistry
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