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Hyeshin Jeon, Heeyoung Choi
PURPOSE: To investigate the length of time required for diagnosing consecutive esotropia rather than initial overcorrection and examine risk factors for persistent postoperative esotropia after intermittent exotropia surgery. METHODS: This is a retrospective case series in a tertiary medical center. Fifty consecutive patients with postoperative esotropia ≥6 prism diopters at 1 week following exotropia surgery, managed with nonsurgical management and followed up for more than 6 months from 2014 to 2015, were included...
April 4, 2017: European Journal of Ophthalmology
John P Newnham, Matthew W Kemp, Scott W White, Catherine A Arrese, Roger J Hart, Jeffrey A Keelan
Preterm birth (PTB) is one of the major health-care challenges of our time. Being born too early is associated with major risks to the child with potential for serious consequences in terms of life-long disability and health-care costs. Discovering how to prevent PTB needs to be one of our greatest priorities. Recent advances have provided hope that a percentage of cases known to be related to risk factors may be amenable to prevention; but the majority of cases remain of unknown cause, and there is little chance of prevention...
2017: Frontiers in Public Health
Ji Yeon Ryu, Eun Hye Wi, Moumita Pait, Sunwoo Lee, Peter J Stang, Junseong Lee
The self-assembly of C4-symmetric tetrapyridyl metalloligands containing Fe or Co and diruthenium electron acceptors by means of dative coordination bonding led to the formation of six different heterobimetallic supramolecules. All complexes were characterized by X-ray crystallography, ESI mass spectrometry, and (1)H NMR (in the case of diamagnetic systems) spectroscopy. The bridging units in the diruthenium complexes greatly influenced the geometrical preference of the supramolecular structures, resulting in the formation of different architectures, namely A4D2 or A6D3 (A = acceptor, D = donor)...
April 18, 2017: Inorganic Chemistry
Jiwei Zhang, Siqing Dai, Chaojie Ma, Jianglei Di, Jianlin Zhao
We develop a common-path digital holographic microscopy based on prism-coupling surface plasmon resonance (SPR) for near-field phase imaging. A single beam splitter with specific configuration is introduced in an SPR imaging system to realize off-axis holographic recording. By measuring the phase shift difference of the reflected light at SPR exploiting the proposed holographic microscopy with high temporal stability, near-field characteristic measurement can be realized. With its simplicity, vibration isolation, and inherent capability of phase curvature compensation, the recommended system shows advanced performance in monitoring tiny refractive index variations and imaging biological tissues...
April 10, 2017: Applied Optics
R M A Azzam
Specular reflection at the Brewster angle by a planar surface of a high-refractive-index transparent substrate is an effective means of generating linearly polarized light in the infrared. However, in such a reflection linear polarizer, the refracted light beam is usually dumped. In this paper we describe a polarizing beam splitter (PBS) that uses a high-index prism with a small wedge angle to generate two orthogonally p and s linearly polarized beams that travel in orthogonal directions. A single-layer antireflection coating (ARC) at the exit face of the prism can be embedded with aligned Ag nano needles to suppress the transmission of the small, residual, s-polarized refracted component...
April 10, 2017: Applied Optics
Nikki R Wooten, Abbas S Tavakoli, Marlene B Al-Barwani, Naomi A Thomas, Hrishikesh Chakraborty, Anna M Scheyett, Kelly M Kaminski, Alyssia C Woods, Sue E Levkoff
BACKGROUND: Screening older veterans in Veterans Affairs Medical Center (VAMC) primary care clinics for risky drinking facilitates early identification and referral to treatment. OBJECTIVE: This study compared two behavioral health models, integrated care (a standardized brief alcohol intervention co-located in primary care clinics) and enhanced referral care (referral to specialty mental health or substance abuse clinics), for reducing risky drinking among older male VAMC primary care patients...
April 14, 2017: American Journal of Drug and Alcohol Abuse
Fankang Li, Hao Feng, Alexander N Thaler, Steven R Parnell, William A Hamilton, Lowell Crow, Wencao Yang, Amy B Jones, Hongyu Bai, Masaaki Matsuda, David V Baxter, Thomas Keller, Jaime A Fernandez-Baca, Roger Pynn
The neutron Larmor diffraction technique has been implemented using superconducting magnetic Wollaston prisms in both single-arm and double-arm configurations. Successful measurements of the coefficient of thermal expansion of a single-crystal copper sample demonstrates that the method works as expected. The experiment involves a new method of tuning by varying the magnetic field configurations in the device and the tuning results agree well with previous measurements. The difference between single-arm and double-arm configurations has been investigated experimentally...
April 13, 2017: Scientific Reports
Z Mayaki, M Seydou, M Moutschen, A Albert, N Dardenne, D Sondag, D Gossens, C Gérard
To evaluate the virological safety of blood components provided by the Niamey blood transfusion center after undergoing rapid tests. Samples found negative with rapid tests (n = 222) were screened by the Abbott Prism assay. Positive samples were confirmed by appropriate methods. Of 222 samples, nine (4.1%) were reactive for all markers. After confirmation, seven samples were positive (i.e., 3.2% false-negative results) : five (2.3%) for the surface antigen of hepatitis B (HBsAg) and two (0.9%) for the antibody directed against the hepatitis C virus (HCV-Ab)...
February 1, 2017: Médecine et Santé Tropicales
Earl L Smith, Li-Fang Hung, Baskar Arumugam, Janice M Wensveen, Yuzo M Chino, Ronald S Harwerth
We investigated the potential causal relationships between anisometropia, amblyopia and strabismus, specifically to determine whether either amblyopia or strabismus interfered with emmetropization. We analyzed data from non-human primates that were relevant to the co-existence of anisometropia, amblyopia and strabismus in children. We relied on interocular comparisons of spatial vision and refractive development in animals reared with 1) monocular form deprivation; 2) anisometropia optically imposed by either contact lenses or spectacle lenses; 3) organic amblyopia produced by laser ablation of the fovea; and 4) strabismus that was either optically imposed with prisms or produced by either surgical or pharmacological manipulation of the extraocular muscles...
April 18, 2017: Vision Research
Masayuki Futamata, Keitaro Akai, Chiaki Iida, Natsumi Akiba
We have investigated various aspects of a gap mode plasmon to establish it as an analytical tool. First, markedly large (10(7) - 10(9)) enhancement factors for the Raman scattering intensity from a thiophenol (TP) monolayer sandwiched by Ag films on a prism and silver nanoparticles (AgNPs) were obtained under attenuated total reflection (ATR) geometry. Second, AgNPs with a radius of ∼20 nm were optically trapped and immobilized on TP-covered Ag films under a gap mode resonance with extremely weak laser power density of ∼1 μW/μm(2) at 532 nm...
2017: Analytical Sciences: the International Journal of the Japan Society for Analytical Chemistry
Jinhua Li, Heng Zhang, Nicolas Menguy, Karim Benzerara, Fuxian Wang, Xiaoting Lin, Zhibao Chen, Yongxin Pan
Magnetotactic bacteria (MTB) form intracellular chain-assembled nanocrystals of magnetite or greigite termed magnetosomes. The characterization of magnetosome crystals requires electron microscopy due to their nanoscopic sizes. However, electron microscopy does not provide phylogenetic information for MTB. We have developed a strategy for the simultaneous and rapid phylogenetic and biomineralogical characterization of uncultured MTB at the single-cell level. It consists of four steps: (1) the enrichment of MTB cells from an environmental sample, (2) 16S rRNA gene sequencing of MTB, and (3) fluorescence in situ hybridization analyses coordinated with (4) scanning or transmission electron microscopy (SEM) of the probe-hybridized cells...
April 7, 2017: Applied and Environmental Microbiology
Chris Y Wu, Alon Kahana
Geriatric patients (age ≥ 65) are prone to complications after surgery and are at risk for severe thyroid eye disease (TED). In this study, we aim to identify preoperative demographic and TED patterns associated with geriatric patients who underwent decompression surgery, to examine the effect of age on postoperative strabismus rates, and to identify factors that may contribute to postoperative strabismus in the geriatric subgroup. We retrospectively reviewed patients who underwent thyroid-related orbital decompression surgery at the Kellogg Eye Center, University of Michigan, between 1999 and 2014...
April 2017: Orbit
Matthieu Marechal, Simone Dussi, Marjolein Dijkstra
Nanopolyhedra form a versatile toolbox to investigate the effect of particle shape on self-assembly. Here we consider rod-like triangular prisms to gauge the effect of the cross section of the rods on liquid crystal phase behavior. We also take this opportunity to implement and test a previously proposed version of fundamental measure density functional theory (0D-FMT). Additionally, we perform Monte Carlocomputer simulations and we employ a simpler Onsager theory with a Parsons-Lee correction. Surprisingly and disappointingly, 0D-FMT does not perform better than the Tarazona and Rosenfeld's version of fundamental measure theory (TR-FMT)...
March 28, 2017: Journal of Chemical Physics
Aditya Dutta, Sukanya Panja, Renu K Virk, Jaime Yeji Kim, Roseann Zott, Serge Cremers, David M Golombos, Deli Liu, Juan Miguel Mosquera, Elahe A Mostaghel, Christopher E Barbieri, Antonina Mitrofanova, Cory Abate-Shen
BACKGROUND: Although men on active surveillance for prostate cancer (PCa) may benefit from intervention with 5α-reductase inhibitors (5-ARIs), it has not been resolved whether 5-ARIs are effective for delaying disease progression and, if so, whether specific patients are more likely to benefit. OBJECTIVE: To identify molecular features predictive of patient response to 5-ARIs. DESIGN, SETTING, AND PARTICIPANTS: Nkx3.1 mutant mice, a model of early-stage PCa, were treated with the 5-ARI finasteride, and histopathological and molecular analyses were performed...
April 3, 2017: European Urology
Jun Qiu, Xiulan Lu, Kewei Wang, Yimin Zhu, Chao Zuo, Zhenghui Xiao
This study was designed with the aim of comparing the performances of the pediatric risk of mortality (PRISM), pediatric index of mortality (PIM), and revised version pediatric index of mortality 2 (PIM2) models in a pediatric intensive care unit (PICU) in China.A total of 852 critically ill pediatric patients were recruited in the study between January 1 and December 31, 2014. The variables required to calculate PRISM, PIM, and PIM2 were collected. Mode l performance was evaluated by assessing the calibration and discrimination...
April 2017: Medicine (Baltimore)
Masaya Nishimoto, Kyohei Maekawa, Susumu Noda
We propose new structure of photonic-crystal surface-emitting lasers with oblique-triangular-prism-shaped air holes for direct emission of circularly polarized beam. We show appropriate height and tilt angle of oblique-triangular-prism-shaped air holes to achieve high degree of polarization. Secondly, we investigate the influence of cavity length. High degree of polarization can be obtained by appropriate air-hole shape and cavity length. We also show that right-handed or left-handed circular polarization can be chosen by changing tilt direction of air holes...
March 20, 2017: Optics Express
Shota Kita, Yang Li, Philip Camayd-Muñoz, Orad Reshef, Daryl I Vulis, Robert W Day, Eric Mazur, Marko Lončar
Zero-index metamaterials (ZIMs) offer unprecedented ways to manipulate the flow of light, and are of interest for wide range of applications including optical cloaking, super-coupling, and unconventional phase-matching properties in nonlinear optics. Impedance-matched ZIMs can be obtained through a photonic Dirac-cone (PDC) dispersion induced by an accidental degeneracy of an electric monopole and a transverse magnetic dipole mode at the center of the Brillouin zone. Therefore, PDC is very sensitive to fabrication imperfections...
April 3, 2017: Optics Express
Anhu Li, Xingsheng Liu, Wansong Sun
Scan blind zone and control singularity are two adverse issues for the beam scanning performance in double-prism Risley systems. In this paper, a theoretical model which introduces a third prism is developed. The critical condition for a fully eliminated scan blind zone is determined through a geometric derivation, providing several useful formulae for three-Risley-prism system design. Moreover, inverse solutions for a three-prism system are established, based on the damped least-squares iterative refinement by a forward ray tracing method...
April 3, 2017: Optics Express
A Maksymowicz, C D Chadwell, J Ruiz, A M Tréhu, E Contreras-Reyes, W Weinrebe, J Díaz-Naveas, J C Gibson, P Lonsdale, M D Tryon
The Mw 8.8 megathrust earthquake that occurred on 27 February 2010 offshore the Maule region of central Chile triggered a destructive tsunami. Whether the earthquake rupture extended to the shallow part of the plate boundary near the trench remains controversial. The up-dip limit of rupture during large subduction zone earthquakes has important implications for tsunami generation and for the rheological behavior of the sedimentary prism in accretionary margins. However, in general, the slip models derived from tsunami wave modeling and seismological data are poorly constrained by direct seafloor geodetic observations...
April 5, 2017: Scientific Reports
Junyan Liu, Lin Li, Bing Li, Brian M Peters, Zhenbo Xu, Mark E Shirtliff
OBJECTIVES: This study aimed to investigate the spoilage capability of Lactobacillus lindneri during the induction and resuscitation of viable but nonculturable (VBNC) state. METHODS: L. lindneri strain was identified by sequencing the PCR product (amplifying 16S rRNA gene) using ABI Prism 377 DNA Sequencer. During the VBNC state induction by low temperature storage and beer adaption, total, culturable, and viable cells were assessed by acridine orange direct counting, plate counting, and Live/Dead BacLight bacterial viability kit, respectively...
April 2, 2017: Microbial Pathogenesis
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