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I Carlavan, B Bertino, M Rivier, P Martel, V Bourdes, M Motte, S Déret, P Reiniche, C Menigot, A Khammari, B Dreno, P Fogel, J J Voegel
BACKGROUND: Possible outcomes of acne lesions are atrophic scars which may cause serious psychological distress. Current treatments of post-acne scarring often require invasive procedures. Pathophysiological studies on acne scarring investigated only the first week of papule life. OBJECTIVES: Study the pathophysiology of atrophic scar formation to identify molecular and cellular pathways that can lead to new therapies for the prevention of acne scarring. METHODS: Large-scale gene expression profiling and immunohistochemistry analysis were performed on uninvolved skin and papules in both, scar-prone (SP) and non-scar-prone (NSP) acne patients, at different time points...
April 16, 2018: British Journal of Dermatology
M Aslam, M Tariq Qamar, Shahid Ali, Ateeq Ur Rehman, M T Soomro, Ikram Ahmed, I M I Ismail, A Hameed
The broad bandgap tin (IV) oxide (SnO2 ) is the least investigated semiconductor material for photocatalytic water decontamination in sunlight exposure. A detailed study covering the synthesis, characterization and the evaluation of photocatalytic activity of SnO2 , in the natural sunlight exposure, is presented. The structural characterization by XRD revealed the formation of phase pure tetragonal SnO2 with the average crystallite size of ∼41.5 nm whereas minor Sn2+ states in the material were identified by XPS analysis...
April 13, 2018: Journal of Environmental Management
Qian Liang, Sainan Cui, Changhai Liu, Song Xu, Chao Yao, Zhongyu Li
A novel class of CdS@UIO-66-NH2 core shell heterojunction was fabricated by the facile in-situ solvothermal method. Characterizations show that porous UIO-66-NH2 shell not only allows the visible light to be absorbed on CdS nanorod core, but also provides abundant catalytic active sites as well as an intimate heterojunction interface between UIO-66-NH2 shell and CdS nanorod core. By taking advantage of this property, the core-shell composite presents highly solar-driven photocatalytic performance compared with pristine UIO-66-NH2 and CdS nanorod for the degradation of organic dyes including malachite green (MG) and methyl orange (MO), and displays superior photostability after four recycles...
April 2, 2018: Journal of Colloid and Interface Science
Asaad G Beshish, Mathew R Baginski, Thomas J Johnson, Barry K Deatrick, Ryan P Barbaro, Gabe E Owens
OBJECTIVES: The purpose of this study is to describe the functional status of survivors from extracorporeal cardiopulmonary resuscitation instituted during in-hospital cardiac arrest using the Functional Status Scale. We aimed to determine risk factors leading to the development of new morbidity and unfavorable functional outcomes. DESIGN: This was a single-center retrospective chart review abstracting patient characteristics/demographic data, duration of cardiopulmonary resuscitation, duration of extracorporeal membrane oxygenation support, as well as maximum lactate levels within 2 hours before and after extracorporeal cardiopulmonary resuscitation...
April 13, 2018: Pediatric Critical Care Medicine
Junichi Ishida, Soshi Iimura, Hideo Hosono
New manganese arsenides CsMn4 As3 , RbMn4 As3 , and KMn4 As3 were synthesized by solid-state reaction. They consist of edge-sharing MnAs4 tetrahedra, which are a building block similar to those of Fe-based superconductors. CsMn4 As3 and RbMn4 As3 adopt the KCu4 S3 -type structure (tetragonal P4/ mmm space group, No. 123) with a Mn4 As3 double layer, while KMn4 As3 has the CaFe4 As3 -type structure (orthorhombic Pnma space group, No. 62) with a Mn4 As3 tunnel framework. The structural change from CsMn4 As3 and RbMn4 As3 to KMn4 As3 as well as the structural trend of the other ternary A-Mn-As (A = alkali metal) and AE-Mn-As (AE = alkaline-earth metal) compounds is understood as a consequence of reduction of the coordination number around the A and AE sites owing to the decrease of the ionic radius from Cs+ to Mg2+ ...
April 16, 2018: Inorganic Chemistry
Marine Boudot de la Motte, Rachid Abbas, Fanny Jouan, Damien van Gysel, Marie Paule Chauveheid, Thomas Papo, Karim Sacre
Acute meningitis can be the first manifestation of an underlying systemic inflammatory disorder (SID). In the current study, we aimed to identify clinical indicators for SIDs in patients admitted for acute aseptic meningitis. All patients hospitalised for acute aseptic meningitis over a 4-year period in a department of internal medicine were included retrospectively. Patients with neoplastic meningitis were excluded. Extraneurological signs were recorded using a systematic panel. Systemic inflammatory disorder diagnosis was made according to current international criteria...
March 2018: Clinical Medicine: Journal of the Royal College of Physicians of London
Ying-Chu Chen, Zhong-Bo Chen, Yu-Kuei Hsu
A Copper phosphide (Cu3 P) micro-rod (MR) array, with coverage by an n-Cu2 O thin layer by electrodeposition as a photocathode, has been directly fabricated on copper foil via simple electro-oxidation and phosphidation for photoelectrochemical (PEC) hydrogen production. The morphology, structure, and composition of the Cu3 P/Cu2 O heterostructure are systematically analyzed using a scanning electron microscope (SEM), X-ray diffraction and X-ray photoelectron spectra. The PEC measurements corroborate that the p-Cu3 P/n-Cu2 O heterostructural photocathode illustrates efficient charge separation and low charge transfer resistance to achieve the highest photocurrent of 430 μA cm-2 that is greater than other transition metal phosphide materials...
March 30, 2018: Journal of Colloid and Interface Science
Daniel Mollicone, Kevin Kan, Chris Mott, Rachel Bartels, Steve Bruneau, Matthew van Wollen, Amy R Sparrow, Hans P A Van Dongen
Fatigue causes decrements in vigilant attention and reaction time and is a major safety hazard in the trucking industry. There is a need to quantify the relationship between driver fatigue and safety in terms of operationally relevant measures. Hard-braking events are a suitable measure for this purpose as they are relatively easily observed and are correlated with collisions and near-crashes. We developed an analytic approach that predicts driver fatigue based on a biomathematical model and then estimates hard-braking events as a function of predicted fatigue, controlling for time of day to account for systematic variations in exposure (traffic density)...
April 2, 2018: Accident; Analysis and Prevention
M D Hossain, R A Mayanovic, S Dey, R Sakidja, M Benamara
We have synthesized bimagnetic core-shell nanoparticles containing a first-of-its-kind Ni(ii)-chromia nanophase shell and a well-defined, epitaxial core-shell interface. Magnetic measurements reveal a substantial coercivity of the nanoparticles and a significant exchange bias effect between the antiferromagnetic chromia core and the ferromagnetic Ni(ii)-chromia shell at low temperatures. The ferromagnetism and a weak exchange bias effect are found to persist to room temperature in the core-shell nanoparticles of ∼57 nm average size...
April 3, 2018: Physical Chemistry Chemical Physics: PCCP
Yang Liu, Bryan R Wygant, Oluwaniyi Mabayoje, Jie Lin, Kenta Kawashima, Jun-Hyuk Kim, Wenzhang Li, Jie Li, C Buddie Mullins
During photoelectrochemical (PEC) water splitting, the reactions occur on the surface of the photoelectrode. Therefore, the properties of the interfaces between the various components of the electrode (semiconductor/semiconductor, semiconductor/catalyst, or photoelectrode/electrolyte) affect the PEC performance of the composite material. Notably, surface trap states may hinder charge transfer and transport properties, and also cause Fermi pinning, affecting the quasi-Fermi level and onset potential under illumination, which may in turn influence the PEC performance of the corresponding tandem cells...
April 2, 2018: ACS Applied Materials & Interfaces
Tianxing Ma, Lufeng Zhang, Chia-Chen Chang, Hsiang-Hsuan Hung, Richard T Scalettar
Using exact quantum Monte Carlo calculations, we examine the interplay between localization of electronic states driven by many-body correlations and that by randomness in a two-dimensional system featuring linearly vanishing density of states at the Fermi level. A novel disorder-induced nonmagnetic insulating phase is found to emerge from the zero-temperature quantum critical point separating a semimetal and a Mott insulator. Within this phase, a phase transition from a gapless Anderson-like insulator to a gapped Mott-like insulator is identified...
March 16, 2018: Physical Review Letters
Ali A Abdelhafiz, Mohamed A Ganzoury, Ahmad W Amer, Azza A Faiad, Ahmed M Khalifa, Siham Y AlQaradawi, Mostafa A El-Sayed, Faisal M Alamgir, Nageh K Allam
Understanding the nature of interfacial defects of materials is a critical undertaking for the design of high-performance hybrid electrodes for photocatalysis applications. Theoretical and computational endeavors to achieve this have touched boundaries far ahead of their experimental counterparts. However, to achieve any industrial benefit out of such studies, experimental validation needs to be systematically undertaken. In this sense, we present herein experimental insights into the synergistic relationship between the lattice position and oxidation state of tungsten ions inside a TiO2 lattice, and the respective nature of the created defect states...
March 29, 2018: Physical Chemistry Chemical Physics: PCCP
Hamid Mosadeq, Reza Asgari
The ground-state phase diagram of a two-leg fermionic dipolar ladder with inter-site interactions
 is studied using density matrix renormalization group (DMRG) techniques. We use a state-of-the-
 art implementation of the DMRG algorithm and finite size scaling to simulate large system sizes
 with high accuracy. We also consider two different model systems and explore stable phases in
 half and quarter filling factors. We find that in the half filling, the charge and spin gaps emerge
 in a finite value of the dipole-dipole and on-site interactions...
March 28, 2018: Journal of Physics. Condensed Matter: An Institute of Physics Journal
Alexei Sherman
The influence of spin and charge fluctuations on spectra of the two-dimensional fermionic Hubbard model is considered using the strong coupling diagram technique. Infinite sequences of diagrams containing ladder inserts, which describe the interaction of electrons with these fluctuations, are summed, and obtained equations are self-consistently solved for the ranges of Hubbard repulsions $2t\leq U\leq 10t$, temperatures $0.2t\lesssim T\lesssim t$ and electron concentrations $0.7\lesssim\bar{n}\leq1$ with $t$ the intersite hopping constant...
March 27, 2018: Journal of Physics. Condensed Matter: An Institute of Physics Journal
Hassan Nasser, Arjune Dhanekula, Muwaffak Abdulhak, Michael Mott, Zane T Hammoud
Giant cell tumor (GCT) is a relatively uncommon bone tumor rarely originating from the chest wall. Given its proximity to vital structures in the thoracic cavity, treatment options may be challenging. We report a case of a GCT of the posterolateral chest wall with invasion of the thoracic spine treated with neoadjuvant denosumab followed by surgical resection.
March 22, 2018: Annals of Thoracic Surgery
Aaron C Petrey, Carol A de la Motte
Hyaluronan, a major extracellular matrix component, is an active participant in many disease states, including inflammatory bowel disease (IBD). The synthesis of this dynamic polymer is increased at sites of inflammation. Hyaluronan together with the enzymes responsible for its synthesis, degradation, and its binding proteins, directly modulates the promotion and resolution of disease by controlling recruitment of immune cells, by release of inflammatory cytokines, and by balancing hemostasis. This review discusses the functional significance of hyaluronan in the cells and tissues involved in inflammatory bowel disease pathobiology...
March 21, 2018: Matrix Biology: Journal of the International Society for Matrix Biology
G Edward Marti, Ross B Hutson, Akihisa Goban, Sara L Campbell, Nicola Poli, Jun Ye
We implement imaging spectroscopy of the optical clock transition of lattice-trapped degenerate fermionic Sr in the Mott-insulating regime, combining micron spatial resolution with submillihertz spectral precision. We use these tools to demonstrate atomic coherence for up to 15 s on the clock transition and reach a record frequency precision of 2.5×10^{-19}. We perform the most rapid evaluation of trapping light shifts and record a 150 mHz linewidth, the narrowest Rabi line shape observed on a coherent optical transition...
March 9, 2018: Physical Review Letters
David Curtis, Leda Coelewij, Shou-Hwa Liu, Jack Humphrey, Richard Mott
A previous study of exome-sequenced schizophrenia cases and controls reported an excess of singleton, gene-disruptive variants among cases, concentrated in particular gene sets. The dataset included a number of subjects with a substantial Finnish contribution to ancestry. We have reanalysed the same dataset after removal of these subjects and we have also included non-singleton variants of all types using a weighted burden test which assigns higher weights to variants predicted to have a greater effect on protein function...
March 21, 2018: Behavior Genetics
Colleen M McBratney, Sarah J de la Motte
No abstract text is available yet for this article.
March 14, 2018: Military Medicine
Christopher B Forrest, Lisa J Meltzer, Carole L Marcus, Anna de la Motte, Amy Kratchman, Daniel J Buysse, Paul A Pilkonis, Brandon D Becker, Katherine B Bevans
Study Objectives: To develop and evaluate the measurement properties of child-report and parent-proxy versions of the PROMIS ® Pediatric Sleep Disturbance and Sleep-Related Impairment item banks. Methods: A national sample of 1,104 children (8-17 years-old) and 1,477 parents of children 5-17 years-old was recruited from an internet panel to evaluate the psychometric properties of 43 sleep health items. A convenience sample of children and parents recruited from a pediatric sleep clinic was obtained to provide evidence of the measures' validity; polysomnography data were collected from a subgroup of these children...
March 13, 2018: Sleep
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