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https://www.readbyqxmd.com/read/29348687/far-field-superfocusing-along-with-enhanced-near-field-emission-from-hybrid-spiral-plasmonic-lens-inscribed-with-nano-corrals-slit-diffractor
#1
Priyanshu Jain, Tanmoy Maiti
Here, we have numerically calculated electric field intensity and phase of the emission from various hybrid spiral plasmonic lenses (HSPL) in near field as well as in far-field. We have proposed a novel HSPL inscribed with nano corrals slit (NCS) and compared its focusing ability with other HSPLs inscribed with circular slit and circular grating. With the use of nano corrals slit, we have been able to improve light intensity in the far-field without compromising near-field intensity. Our NCS-HSPL outperforms other HSPLs and standalone SPL in near-field as well as far-field...
January 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29347259/electro-osmosis-of-nematic-liquid-crystals-under-weak-anchoring-and-second-order-surface-effects
#2
Antarip Poddar, Jayabrata Dhar, Suman Chakraborty
Advent of nematic liquid crystal flows has attracted renewed attention in view of microfluidic transport phenomena. Among various transport processes, electro-osmosis stands as one of the efficient flow actuation mechanisms through narrow confinements. In the present study, we explore the electrically actuated flow of an ordered nematic fluid with ionic inclusions, taking into account the influences from surface-induced elasticity and electrical double layer (EDL) phenomena. Toward this, we devise the coupled flow governing equations from fundamental free-energy analysis, considering the contributions from first- and second-order elastic, dielectric, flexoelectric, charged surface polarization, ionic and entropic energies...
July 2017: Physical Review. E
https://www.readbyqxmd.com/read/29347201/stiffening-thermal-membranes-by-cutting
#3
Emily R Russell, Rastko Sknepnek, Mark Bowick
Two-dimensional crystalline membranes have recently been realized experimentally in systems such as graphene and molybdenum disulfide, sparking a resurgence in interest in their statistical properties. Thermal fluctuations can significantly affect the effective mechanical properties of properly thermalized membranes, renormalizing both bending rigidity and elastic moduli so that in particular they become stiffer to bending than their bare bending rigidity would suggest. We use molecular dynamics simulations to examine how the mechanical behavior of thermalized two-dimensional clamped ribbons (cantilevers) depends on their precise topology and geometry...
July 2017: Physical Review. E
https://www.readbyqxmd.com/read/29345700/abnormal-separation-of-the-silicon-oxygen-bond-in-the-liquid-layering-transition-of-silicon-dioxide-in-a-nanoslit
#4
Zhichao Wang, Tao Li, Yunrui Duan, Weikang Wu, Zhenyang Zhao, Yao Liu, Hui Li
We investigated the unusual layering transition (LT) in quasi-2D liquid silicon dioxide (SiO2) confined in a nanoslit. Our results indicate that the slit size and pressure induce the abnormal LT in liquid SiO2, accompanied by a rapid change in the density, diffusion coefficient, pair correlation function and average potential energy. The silicon and oxygen atoms are almost completely separated under the extremely strong confinement effect, which is the characteristic feature of the LT. The negative slope of the LT lines in the phase diagram at different pressures suggests that a confinement-induced LT occurs at high pressure and a pressure-induced LT occurs at low pressure...
January 18, 2018: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29344500/pilot-study-of-a-large-eye-surgically-induced-dry-eye-rabbit-model-by-selective-removal-of-the-harderian-lacrimal-and-meibomian-glands
#5
Arthur S Polans, Jonathan F McAnulty, Paul O Phelps, Soesiawati R Darjatmoko, Christopher K Burris, Daniel M Albert
Background/Aims: Establish a reliable rabbit dry eye (DE) model. Methods: An interventional cohort study surgically removing glands contributing to the tear film. Eight rabbits were studied after removal of left lacrimal, Harderian, or both glands. Additional rabbits had Meibomian glands in the left eye thermally obstructed. All were followed for 10 weeks with phenol red thread (PRT) and slit-lamp examination with 2% fluorescein. We assessed corneal sensitivity using a Cochet-Bonnet esthesiometer...
December 2017: Ocular Oncology and Pathology
https://www.readbyqxmd.com/read/29343922/periureteral-inferior-vena-caval-venous-ring-presenting-as-urinary-obstruction
#6
Suprava Naik, Arashdeep Singh, Sudipta Mohakud, Nerbadyswari Deep
The embryological development of the inferior vena cava (IVC) is complex, and thus the vena cava may undergo a large number of congenital anomalies. Periureteric venous ring is a rare developmental anomaly of IVC where the right ureter passes through a slit-like opening in a partially duplicated infrarenal IVC, resulting in dilatation of upper urinary tract. Split-bolus multidetector computed tomography technique is useful in detecting such vascular anomaly causing ureteric obstruction as it can clearly show the vascular and ureteric phase in a single acquisition...
January 2018: Indian Journal of Urology: IJU: Journal of the Urological Society of India
https://www.readbyqxmd.com/read/29343790/interference-experiment-with-asymmetric-double-slit-by-using-1-2-mv-field-emission-transmission-electron-microscope
#7
Ken Harada, Tetsuya Akashi, Kodai Niitsu, Keiko Shimada, Yoshimasa A Ono, Daisuke Shindo, Hiroyuki Shinada, Shigeo Mori
Advanced electron microscopy technologies have made it possible to perform precise double-slit interference experiments. We used a 1.2-MV field emission electron microscope providing coherent electron waves and a direct detection camera system enabling single-electron detections at a sub-second exposure time. We developed a method to perform the interference experiment by using an asymmetric double-slit fabricated by a focused ion beam instrument and by operating the microscope under a "pre-Fraunhofer" condition, different from the Fraunhofer condition of conventional double-slit experiments...
January 17, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29343639/neural-migration-re-evaluating-slit-and-robo
#8
(no author information available yet)
No abstract text is available yet for this article.
January 17, 2018: Development
https://www.readbyqxmd.com/read/29343636/non-cell-autonomous-control-of-precerebellar-neuron-migration-by-slit-and-robo-proteins
#9
Chloé Dominici, Quentin Rappeneau, Pavol Zelina, Stéphane Fouquet, Alain Chédotal
During development, precerebellar neurons migrate tangentially from the dorsal hindbrain to the floor plate. Their axons cross it but their cell bodies stop their ventral migration upon reaching the midline. It has previously been shown that Slit chemorepellents and their receptors, Robo1 and Robo2, might control the migration of precerebellar neurons in a repulsive manner. Here, we have used a conditional knockout strategy in mice to test this hypothesis. We show that the targeted inactivation of the expression of Robo1 and Robo2 receptors in precerebellar neurons does not perturb their migration and that they still stop at the midline...
January 17, 2018: Development
https://www.readbyqxmd.com/read/29342438/vitreoretinal-complications-and-outcomes-in-92-eyes-undergoing-surgery-for-modified-osteo-odonto-keratoprosthesis-a-10-year-review
#10
Pukhraj Rishi, Ekta Rishi, Vishvesh Agarwal, Sridevi Nair, Geetha Iyer, Bhaskar Srinivasan, Shweta Agarwal
PURPOSE: To analyze vitreoretinal (VR) complications and treatment outcomes in eyes undergoing modified osteo-odonto-keratoprosthesis (OOKP) surgery. DESIGN: Retrospective case series. PARTICIPANTS: All patients who underwent modified OOKP (mOOKP) surgery at a tertiary eye-care center from March 2003 to February 2013 were included. METHODS: Medical records were reviewed for relevant medical history, best-corrected visual acuity (BCVA), slit-lamp examination, ultrasound scan, oral examination findings, and VR complications...
January 13, 2018: Ophthalmology
https://www.readbyqxmd.com/read/29339578/functional-metasurfaces-based-on-metallic-and-dielectric-subwavelength-slits-and-stripes-array
#11
Yinghui Guo, Mingbo Pu, Xiong Li, Xiaoliang Ma, Ping Gao, Yanqin Wang, Xiangang Luo
Starting with the early works of extraordinary optical transmission and total extinction, researchers have been fascinated by the unusual optical properties displayed by metallic holes/slits and subsequently found similar abnormities in dielectric counterparts. Benefiting from the shrinking wavelength of SPPs excited in metallic slits and high refractive index of dielectric stripes, one can realize local phase modulation and approach desired dispersion by engineering the geometries of slits and stripes array...
January 17, 2018: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/29338772/incidence-risk-factors-and-impact-of-protocolised-care-on-exposure-keratopathy-in-critically-ill-adults-a-two-phase-prospective-cohort-study
#12
Obaid Kousha, Zubaid Kousha, Jonathan Paddle
BACKGROUND: Exposure keratopathy (EK) has a high incidence in critically ill patients. We aimed to determine the rate of EK in patients admitted to our intensive care unit (ICU), identify risk factors for developing EK and ascertain the effectiveness of a protocol to prevent EK. METHODS: We undertook a two-phase prospective cohort single-centre study in a general adult ICU. The first phase of the study was observational. In the second phase of the study an eye care protocol was introduced...
January 16, 2018: Critical Care: the Official Journal of the Critical Care Forum
https://www.readbyqxmd.com/read/29338133/pimasertib-associated-ophthalmological-adverse-events
#13
Elon H C van Dijk, Wim H J Kruit, Martine J Jager, Gregorius P M Luyten, Johannes R Vingerling, Camiel J F Boon
PURPOSE: To analyse ophthalmological adverse events associated with mitogen-activated protein kinase kinase (MEK) inhibition with pimasertib treatment for metastatic cutaneous melanoma (CM). METHODS: In this prospective observational, cohort-based, cross-sectional study, eight patients treated with the MEK inhibitor pimasertib received a complete ophthalmic examination. This included Early Treatment of Diabetic Retinopathy Study best-corrected visual acuity, visual field testing, colour vision testing, slit-lamp examination, applanation tonometry, indirect ophthalmoscopy, digital colour fundus photography and optical coherence tomography (OCT)...
January 16, 2018: Acta Ophthalmologica
https://www.readbyqxmd.com/read/29336627/clinical-severity-classification-using-automated-conjunctival-hyperemia-analysis-software-in-patients-with-superior-limbic-keratoconjunctivitis
#14
Junki Kurita, Jun Shoji, Noriko Inada, Tsuyoshi Yoneda, Tamaki Sumi, Masahiko Kobayashi, Yasuhiro Hoshikawa, Atsuki Fukushima, Satoru Yamagami
PURPOSE: Digitization of clinical observation is necessary for assessing the severity of superior limbic keratoconjunctivitis (SLK). This study aimed to use a novel quantitative marker to examine hyperemia in patients with SLK. MATERIALS AND METHODS: We included six eyes of six patients with both dry eye disease and SLK (SLK group) and eight eyes of eight patients with Sjögren syndrome (SS group). We simultaneously obtained the objective finding scores by using slit-lamp examination and calculated the superior hyperemia index (SHI) with an automated conjunctival hyperemia analysis software by using photographs of the anterior segment...
January 16, 2018: Current Eye Research
https://www.readbyqxmd.com/read/29335087/-research-advances-in-the-association-between-transient-receptor-potential-cation-channel-6-and-kidney-disease
#15
Shan Cao, Yun-Guang Liu
Transient receptor potential cation channel 6 (TRPC6) is a member of the transient receptor superfamily encoded by the TRPC6 gene and is widely expressed in tissues and organs of the human body, especially in the glomerular podocytes. TRPC6 interacts with various slit diaphragm (SD) proteins including podocin, nephrin, ACTN4, and CD2AP to maintain the normal structure and function of glomerular podocytes. Foot process fusion caused by podocyte damage due to various factors is the most important morphological change in kidney disease...
January 2018: Zhongguo Dang Dai Er Ke za Zhi, Chinese Journal of Contemporary Pediatrics
https://www.readbyqxmd.com/read/29334140/slit-tubes-for-semisoft-pneumatic-actuators
#16
Lee Belding, Bilge Baytekin, Hasan Tarik Baytekin, Philipp Rothemund, Mohit S Verma, Alex Nemiroski, Dan Sameoto, Bartosz A Grzybowski, George M Whitesides
This article describes a new principle for designing soft or 'semisoft' pneumatic actuators: SLiT (for SLit-in-Tube) actuators. Inflating an elastomeric balloon, when enclosed by an external shell (a material with higher Young's modulus) containing slits of different directions and lengths, produces a variety of motions, including bending, twisting, contraction, and elongation. The requisite pressure for actuation depends on the length of the slits, and this dependence allows sequential actuation by controlling the applied pressure...
January 15, 2018: Advanced Materials
https://www.readbyqxmd.com/read/29332129/aspergillus-fumigatus-increased-par-2-expression-and-elevated-proinflammatory-cytokines-expression-through-the-pathway-of-par-2-erk1-2-in-cornea
#17
Yawen Niu, Guiqiu Zhao, Cui Li, Jing Lin, Nan Jiang, Chengye Che, Jie Zhang, Qiang Xu
Purpose: To determine the role of protease-activated receptor-2 (PAR-2) in cornea infected by Aspergillus fumigatus. Methods: PAR-2 was tested in normal and infected corneas of C57BL/6 mice. Mice corneas were infected with A. fumigatus with or without pretreatment of PAR-2 antagonist (FSLLRY-NH2). Polymorphonuclear neutrophilic leukocytes (PMNs) were stimulated with 75% ethanol-killed A. fumigatus with or without pretreatment of FSLLRY-NH2. Disease severity was documented by clinical score and photographs with a slit lamp...
January 1, 2018: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/29331618/efficacy-and-safety-of-sublingual-immunotherapy-with-dermatophagoides-farinae-drops-in-pre-school-and-school-age-children-with-allergic-rhinitis
#18
L-X Tang, X-J Yang, P-P Wang, W-T Ge, J Zhang, Y-L Guo, J Lu, J Tai, Y-M Zhang, X Ni
BACKGROUND: The safety and efficacy of sublingual immunotherapy (SLIT) have been confirmed by many studies. However, in China, the research on efficacy and safety in young and older children with allergic rhinitis (AR) is still rare. OBJECTIVE: The aim of this retrospective study is to evaluate the efficacy and safety of SLIT with Dermatophagoides farinae drops in pre-school and school-age children with AR. METHODS: A total of 282 subjects aged 2-13 years with AR received a two-year course of sublingual immunotherapy along with pharmacotherapy...
January 10, 2018: Allergologia et Immunopathologia
https://www.readbyqxmd.com/read/29331341/effects-of-the-gut-liver-axis-on-ischemia-mediated-hepatocellular-carcinoma-recurrence-in-the-mouse-liver
#19
Lorenzo A Orci, Stéphanie Lacotte, Vaihere Delaune, Florence Slits, Graziano Oldani, Vladimir Lazarevic, Carlo Rossetti, Laura Rubbia-Brandt, Philippe Morel, Christian Toso
BACKGROUND & AIMS: There is growing evidence that liver graft ischemia-reperfusion (I/R) is a risk factor for hepatocellular carcinoma (HCC) recurrence, but the involved mechanisms are unclear. Here, we tested the hypothesis that mesenteric congestion due to portal blood flow interruption induces endotoxin-mediated Toll-Like Receptor 4 (Tlr4) engagement, resulting in elevated liver cancer burden. We also assessed the role of remote ischemic preconditioning (RIPC) in this context. METHODS: C57Bl/6j mice were exposed to standardized models of liver I/R injury and RIPC, by occluding hepatic and femoral blood vessels...
January 10, 2018: Journal of Hepatology
https://www.readbyqxmd.com/read/29329140/slit-lamp-needling-of-the-anterior-capsule-for-aqeuous-misdirection-post-hyaloido-zonulectomy-and-iridectomy
#20
Pierre G Mardelli, Marc E Mardelli
INTRODUCTION: We present a case of persistent aqueous misdirection post Ahmed glaucoma valve despite undergoing an anterior vitrectomy with hyaloido-zonulectomy, and iridectomy. CASE REPORT: A 73 year old female 4 months post phaco-trabeculectomy was referred with persistent high IOP. Post-operatively, she developed aqueous misdirection with a flat anterior chamber (AC) but with an IOP of 15▒mm Hg. On presentation her AC was shallow with peripheral iris-cornea touch and IOP was 39▒mm Hg...
January 11, 2018: Journal of Glaucoma
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