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https://www.readbyqxmd.com/read/28423005/an-archosauromorph-dominated-ichnoassemblage-in-fluvial-settings-from-the-late-early-triassic-of-the-catalan-pyrenees-ne-iberian-peninsula
#1
Eudald Mujal, Josep Fortuny, Arnau Bolet, Oriol Oms, José Ángel López
The vertebrate recovery after the end-Permian mass extinction can be approached through the ichnological record, which is much more abundant than body fossils. The late Olenekian (Early Triassic) tetrapod ichnoassemblage of the Catalan Pyrenean Basin is the most complete and diverse of this age from Western Tethys. This extensional basin, composed of several depocenters, was formed in the latest phases of the Variscan orogeny (Pangea breakup) and was infilled by braided and meandering fluvial systems of the red-beds Buntsandstein facies...
2017: PloS One
https://www.readbyqxmd.com/read/28422684/visual-analysis-of-inclusion-dynamics-in-two-phase-flow
#2
Grzegorz Karch, Fabian Beck, Moritz Ertl, Christian Meister, Kathrin Schulte, Bernhard Weigand, Thomas Ertl, Filip Sadlo
In single-phase flow visualization, research focuses on the analysis of vector field properties. In two-phase flow, in contrast, analysis of the phase components is typically of major interest. So far, visualization research of two-phase flow concentrated on proper interface reconstruction and the analysis thereof. In this paper, we present a novel visualization technique that enables the investigation of complex two-phase flow phenomena with respect to the physics of breakup and coalescence of inclusions. On the one hand, we adapt dimensionless quantities for a localized analysis of phase instability and breakup, and provide detailed inspection of breakup dynamics with emphasis on oscillation and its interplay with rotational motion...
April 12, 2017: IEEE Transactions on Visualization and Computer Graphics
https://www.readbyqxmd.com/read/28415369/from-solitons-to-rogue-waves-in-nonlinear-left-handed-metamaterials
#3
Yannan Shen, P G Kevrekidis, G P Veldes, D J Frantzeskakis, D DiMarzio, X Lan, V Radisic
In the present work, we explore soliton and roguelike wave solutions in the transmission line analog of a nonlinear left-handed metamaterial. The nonlinearity is expressed through a voltage-dependent, symmetric capacitance motivated by recently developed ferroelectric barium strontium titanate thin-film capacitor designs. We develop both the corresponding nonlinear dynamical lattice and its reduction via a multiple scales expansion to a nonlinear Schrödinger (NLS) model for the envelope of a given carrier wave...
March 2017: Physical Review. E
https://www.readbyqxmd.com/read/28415356/nonspherical-liquid-droplet-falling-in-air
#4
Meenu Agrawal, A R Premlata, Manoj Kumar Tripathi, Badarinath Karri, Kirti Chandra Sahu
The dynamics of an initially nonspherical liquid droplet falling in air under the action of gravity is investigated via three-dimensional numerical simulations of the Navier-Stokes and continuity equations in the inertial regime. The surface tension is considered to be high enough so that a droplet does not undergo breakup. Vertically symmetric oscillations which decay with time are observed for low inertia. The amplitude of these oscillations increases for high Gallilei numbers and the shape asymmetry in the vertical direction becomes prominent...
March 2017: Physical Review. E
https://www.readbyqxmd.com/read/28415297/toroidal-droplet-instabilities-in-the-presence-of-charge
#5
Alexandros A Fragkopoulos, Alberto Fernández-Nieves
Neutral toroidal droplets can break via the surface-tension-driven Rayleigh-Plateau instability. They can additionally exhibit a shrinking instability, which is also driven by surface tension, whereby the handle progressively disappears. We find that charging a toroidal droplet can qualitatively change the behavior and cause the droplet to expand. We successfully model the transition from shrinking to expanding, considering the pressure balance across the interface of the torus. However, despite the change in behavior, charged toroidal droplets end up breaking into spherical droplets...
March 2017: Physical Review. E
https://www.readbyqxmd.com/read/28415194/migration-of-a-droplet-in-a-cylindrical-tube-in-the-creeping-flow-regime
#6
Binita Nath, Gautam Biswas, Amaresh Dalal, Kirti Chandra Sahu
The migration of a neutrally buoyant droplet in a tube containing another immiscible liquid is investigated numerically in the creeping flow regime. A fully developed velocity profile is imposed at the inlet of the tube. The interface between the two immiscible fluids is captured using a coupled level-set and volume-of-fluid approach. The deformation and breakup dynamics of the droplet are investigated in terms of three dimensionless parameters, namely, the ratio between the radius of the undeformed droplet and the radius of the capillary tube, the viscosity ratio between the dispersed and the continuous phases, and the capillary number that measures the relative importance of the viscous force over the surface tension force...
March 2017: Physical Review. E
https://www.readbyqxmd.com/read/28410360/estimation-of-prevalence-of-meibomian-gland-dysfunction-in-japan
#7
Shiro Amano, Kenji Inoue
PURPOSE: To estimate the prevalence of meibomian gland dysfunction (MGD) in the Japanese population using new diagnostic criteria, including lid margin abnormalities and signs of occlusion of the meibomian gland orifices as essential signs. METHODS: The participants were consecutive patients scheduled for cataract surgery at Inouye Eye Hospital. All participants were aged 50 years or older. The participants completed a symptoms questionnaire and underwent a comprehensive slit-lamp examination...
April 12, 2017: Cornea
https://www.readbyqxmd.com/read/28410354/effects-of-tear-film-lipid-layer-thickness-and-blinking-pattern-on-tear-film-instability-after-corneal-refractive-surgery
#8
Qingzhong Chen, Min Li, Ying Yuan, Rao Me, Yunjie Yu, Guangsen Shi, Xin Wang, Bilian Ke
PURPOSE: To investigate associations between changes in tear film instability and the lipid layer thickness (LLT) and blink pattern after corneal refractive surgery (CRS). METHODS: Forty patients were enrolled in this study. The LLT and blink pattern were evaluated 1 week before and 30 days after CRS using a novel interferometer and an ocular surface disease index (OSDI) questionnaire, and other tear film stability markers were also evaluated. RESULTS: Mean OSDI scores increased from 5...
April 13, 2017: Cornea
https://www.readbyqxmd.com/read/28405164/a-dual-mediated-liposomal-drug-delivery-system-targeting-the-brain-rational-construction-integrity-evaluation-across-the-blood-brain-barrier-and-the-transporting-mechanism-to-glioma-cells
#9
Chang Liu, Xiao-Na Liu, Gui-Ling Wang, Yu Hei, Shuai Meng, Ling-Fei Yang, Lan Yuan, Ying Xie
As the global population ages, cancer rates increase worldwide, and degenerative diseases of the central nervous system (CNS), brain tumors, and inflammation threaten human health more frequently. We designed a dual-mediated (receptor-mediated and adsorption-mediated) liposome, named transferrin-cell penetrating peptide-sterically stabilized liposome (TF-CPP-SSL), to improve therapy for gliomas through combining molecular recognition of transferrin receptors (TF-Rs) on the blood-brain barrier (BBB) and glioma cells with the internalization and lysosomal escaping ability of CPP...
2017: International Journal of Nanomedicine
https://www.readbyqxmd.com/read/28390497/social-anxiety-and-social-support-in-romantic-relationships
#10
Eliora Porter, Dianne L Chambless
Little is known about the quality of socially anxious individuals' romantic relationships. In the present study, we examine associations between social anxiety and social support in such relationships. In Study 1, we collected self-report data on social anxiety symptoms and received, provided, and perceived social support from 343 undergraduates and their romantic partners. One year later couples were contacted to determine whether they were still in this relationship. Results indicated that men's social anxiety at Time 1 predicted higher rates of breakup at Time 2...
May 2017: Behavior Therapy
https://www.readbyqxmd.com/read/28388209/wind-driven-formation-of-ice-bridges-in-straits
#11
Bhargav Rallabandi, Zhong Zheng, Michael Winton, Howard A Stone
Ice bridges are static structures composed of tightly packed sea ice that can form during the course of its flow through a narrow strait. Despite their important role in local ecology and climate, the formation and breakup of ice bridges is not well understood and has proved difficult to predict. Using long-wave approximations and a continuum description of sea ice dynamics, we develop a one-dimensional theory for the wind-driven formation of ice bridges in narrow straits, which is verified against direct numerical simulations...
March 24, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28384900/efficacy-of-green-tea-extract-for-treatment-of-dry-eye-and-meibomian-gland-dysfunction-a-double-blind-randomized-controlled-clinical-trial-study
#12
Mahmood Nejabat, Salehi Ali Reza, Mehdi Zadmehr, Masoud Yasemi, Zahra Sobhani
INTRODUCTION: With an incidence rate of 9%, dry eye is a common problem of the ocular surface, especially in patients more than 40-year-old. Green tea extract has anti-oxidative, anti-bacterial, anti-androgen, and immunomodulatory properties. AIM: To evaluate the efficacy of green tea extract for treatment of patients with dry eye and Meibomian Gland Dysfunction (MGD). MATERIALS AND METHODS: In a double-blind randomized controlled clinical trial, 60 patients were selected within the age range of 30 to 70 years, and divided into two groups by blocked randomization method...
February 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28379971/analysis-of-th17-associated-cytokines-and-clinical-correlations-in-patients-with-dry-eye-disease
#13
Rongjun Liu, Caifeng Gao, Huijin Chen, Yaxin Li, Ying Jin, Hong Qi
We aimed to investigate the expressions of three Th17-associated cytokines, interleukin (IL)-17A, IL-6 and IL-23, in protein and mRNA levels and their correlations with ocular surface parameters in patients with dry eye disease (DED) through a small sample size case control study. A total of 45 female subjects were divided into Sjögren's syndrome (SS) DED group, non-Sjögren's syndrome (non-SS) DED group and control group. Ocular surface disease index (OSDI) was self-answered and clinical tests including tear-film breakup time (BUT), Schirmer I test, cornea fluorescein staining (CFS) were performed...
2017: PloS One
https://www.readbyqxmd.com/read/28378793/effects-of-a-warm-compress-containing-menthol-on-the-tear-film-in-healthy-subjects-and-dry-eye-patients
#14
Reiko Arita, Naoyuki Morishige, Ichiro Sakamoto, Natsuko Imai, Yuko Shimada, Michihito Igaki, Atsushi Suzuki, Kouzo Itoh, Kazuo Tsubota
Menthol is thought to stimulate lacrimation via activation of cold-sensitive primary afferent neurons in the cornea. We evaluated a warm compress containing menthol as a potential treatment for dry eye by examining its effects on the tear film in healthy subjects (n = 20) and dry eye patients (n = 35). Disposable eyelid-warming steamers that either did (MH) or did not (HO) contain menthol were applied to one eye of each subject either once only for 10 min or repeatedly over 2 weeks. Single application of MH significantly increased tear meniscus volume (P = 8...
April 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28375792/safety-and-efficacy-of-cortisol-phosphate-in-hyaluronic-acid-vehicle-in-the-treatment-of-dry-eye-in-sjogren-syndrome
#15
Maurizio Rolando, Aldo Vagge
PURPOSE: Evaluation of 0.3% cortisol phosphate eye drops in hyaluronic acid vehicle in the treatment of dry eye in Sjogren Syndrome. METHODS: This prospective, single-center, masked (single blind), randomized controlled study included 40 female patients divided into 2 groups, group 1 treated with Idracemi, 0.3% cortisol phosphate eye drops twice a day, and group 2 treated with Cortivis, 0.3% cortisol phosphate in hyaluronic acid vehicle, with the same posology. Screening (day -7), randomization (day 0), follow-up (day 7), and termination (day 28) visits were conducted...
April 4, 2017: Journal of Ocular Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28375789/the-effect-of-tear-supplementation-with-0-15-preservative-free-zinc-hyaluronate-on-ocular-surface-sensations-in-patients-with-dry-eye
#16
Kristóf Perényi, Lóránt Dienes, Anna Kornafeld, Balázs Kovács, Huba J Kiss, Zsuzsanna Szepessy, Zoltán Z Nagy, Árpád Barsi, M Carmen Acosta, Juana Gallar, Illés Kovács
PURPOSE: To evaluate the effect of tear supplementation with preservative free 0.15% zinc-hyaluronate on ocular surface sensations and corneal sensitivity in dry eye patients. METHODS: Ocular surface sensations were assessed using the ocular surface disease index (OSDI) questionnaire and by recording ocular sensations during forced blinking in parallel with noninvasive tear film breakup time measurement in 20 eyes of 20 dry eye patients. Corneal sensitivity thresholds to selective stimulation of corneal mechano-, thermal- and chemical receptors were measured using the Belmonte gas esthesiometer...
April 4, 2017: Journal of Ocular Pharmacology and Therapeutics
https://www.readbyqxmd.com/read/28368991/ocular-surface-parameters-predicting-patient-satisfaction-after-a-single-vectored-thermal-pulsation-procedure-for-management-of-symptomatic-meibomian-gland-dysfunction
#17
Allister Gibbons, Daniel Waren, Nilufer Yesilirmak, Kendra Davis, Felipe Valenzuela, Juan C Murillo, Victor L Perez
PURPOSE: To evaluate the ocular surface parameters that could predict patient satisfaction after single application of vectored thermal pulsation (VTP). METHODS: This is a retrospective interventional case series; it included consecutive patients who underwent bilateral VTP for management of symptomatic meibomian gland dysfunction (MGD). Patients received a full ocular surface evaluation. The outcome was patient subjective improvement during the first 3-4 months after 3 follow-up visits...
March 31, 2017: Cornea
https://www.readbyqxmd.com/read/28368039/phylogeny-and-historical-biogeography-of-leafhopper-subfamily-evacanthinae-hemiptera-cicadellidae-based-on-morphological-and-molecular-data
#18
Yang Wang, Christopher H Dietrich, Yalin Zhang
Phylogenetic relationships among major lineages of the Evacanthinae, a highly diverse leafhopper subfamily distributed worldwide, were explored by analysing a dataset of 100 discrete morphological characters and DNA sequence data from five gene regions. Sixty-seven taxa representing all evacanthine tribes and all regional faunas, and fourteen putative outgroup taxa were included. Maximum-likelihood and Bayesian analyses yielded similar tree topologies that were well resolved with strong support for the monophyly of Evacanthinae and its four previously included tribes, but indicated that Draconirvana Dietrich, was incorrectly placed to tribe and that Sophonia Walker, Evacanthus Le Peletier &Serville, Bundera Distant, Paraonukia Ishihara and Onukia Matsumura are not monophyletic...
April 3, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28366362/femtosecond-laser-assisted-laser-in-situ-keratomileusis-versus-photorefractive-keratectomy-effect-on-ocular-surface-condition
#19
Paola Sauvageot, Gemma Julio, Juan Alvarez de Toledo, Victor Charoenrook, Rafael I Barraquer
PURPOSE: To compare ocular surface characteristics in eyes after femtosecond laser-assisted laser in situ keratomileusis (LASIK) or photorefractive keratectomy (PRK). SETTING: Centro de Oftalmologia Barraquer, Barcelona, Spain. DESIGN: Prospective comparative observational study. METHODS: Patients with myopia who had femtosecond laser-assisted LASIK or PRK were included. Tear osmolarity, the Ocular Surface Disease Index questionnaire, Schirmer I, corneal sensitivity, tear breakup time (TBUT), and corneal fluorescein staining were evaluated preoperatively and 3, 6, and 12 months postoperatively...
February 2017: Journal of Cataract and Refractive Surgery
https://www.readbyqxmd.com/read/28363586/increase-in-tear-film-lipid-layer-thickness-after-instillation-of-3-diquafosol-ophthalmic-solution-in-healthy-human-eyes
#20
Shima Fukuoka, Reiko Arita
PURPOSE: To evaluate the effect of 3% diquafosol ophthalmic solution on tear film lipid layer thickness (LLT) in normal human eyes by tear interferometry. METHODS: Forty-seven healthy men (mean age of 42.4 years) randomly received one drop of artificial tears in one eye and one drop of 3% diquafosol ophthalmic solution in the other. LLT of each eye was quantified by tear interferometry before and 15, 30, and 60 min after instillation. Ocular symptoms were assessed before and 30 min after instillation...
March 28, 2017: Ocular Surface
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