keyword
MENU ▼
Read by QxMD icon Read
search

breakup

keyword
https://www.readbyqxmd.com/read/28729507/remobilization-of-crustal-carbon-may-dominate-volcanic-arc-emissions
#1
Emily Mason, Marie Edmonds, Alexandra V Turchyn
The flux of carbon into and out of Earth's surface environment has implications for Earth's climate and habitability. We compiled a global data set for carbon and helium isotopes from volcanic arcs and demonstrated that the carbon isotope composition of mean global volcanic gas is considerably heavier, at -3.8 to -4.6 per mil (‰), than the canonical mid-ocean ridge basalt value of -6.0‰. The largest volcanic emitters outgas carbon with higher δ(13)C and are located in mature continental arcs that have accreted carbonate platforms, indicating that reworking of crustal limestone is an important source of volcanic carbon...
July 21, 2017: Science
https://www.readbyqxmd.com/read/28709343/internal-rupture-and-rapid-bouncing-of-impacting-drops-induced-by-submillimeter-scale-textures
#2
Rui Zhang, Xiwen Zhang, Pengfei Hao, Feng He
We demonstrate an internal breakup mechanism for high Weber number drop impact on superhydrophobic surfaces uniformly patterned with submillimeter-scale textures, in which the liquid film ruptures from both interior and rim. The employment of submillimeter-scale posts could help decrease the critical Weber number of internal rupture, due to the small solid fraction and the large dimension ratio between primary structures and droplets. The internal rupture is found to promote more rapid drop bouncing than conventional rebound and rim breakup on superhydrophobic surfaces with small roughness, with a 10%-50% reduction of contact time...
June 2017: Physical Review. E
https://www.readbyqxmd.com/read/28709223/instability-evolution-of-the-viscous-elliptic-liquid-jet-in-the-rayleigh-regime
#3
Shibo Gu, Lipo Wang, David L S Hung
For jet flow emanating from noncircular orifices, an unbalanced surface tension force leads to capillary instability, which is independent of influence from the ambient air in the Rayleigh regime. In the present article, the dynamic behavior of incompressible elliptical jets in the Rayleigh regime is investigated. Theoretically, with the consideration of the fluid viscosity, the solution of the Cosserat equation consists of a particular solution and a complementary solution. For the complementary solution the wave number of disturbance modes has two complex conjugate roots, which are responsible for the jet breakup...
June 2017: Physical Review. E
https://www.readbyqxmd.com/read/28708816/determination-of-the-minimal-clinically-important-difference-of-the-university-of-north-carolina-dry-eye-management-scale
#4
Christopher J Hwang, Reeves Ellis, Richard M Davis, Sue Tolleson-Rinehart
PURPOSE: To establish an initial estimation of the MCID of the University of North Carolina Dry Eye Management Scale (UNC DEMS) and assess its association with patient perceptions of symptom change. METHODS: Thirty-three patients (33.3% men, 67.7% women, mean age 60.5 yrs) with previous DEMS scores were recruited from a UNC ophthalmology clinic in spring 2014. We used anchor-based methods, categorizing important symptom change, to compare the change in the DEMS scores across visits to patient assessments of change; linear regression coefficients estimated the MCID...
July 13, 2017: Cornea
https://www.readbyqxmd.com/read/28704773/the-influence-of-protruding-filamentous-bacteria-on-floc-stability-and-solid-liquid-separation-in-the-activated-sludge-process
#5
Wilhelm Burger, Konrad Krysiak-Baltyn, Peter J Scales, Gregory J O Martin, Anthony D Stickland, Sally L Gras
Filamentous bacteria can impact on the physical properties of flocs in the activated sludge process assisting solid-liquid separation or inducing problems when bacteria are overabundant. While filamentous bacteria within the flocs are understood to increase floc tensile strength, the relationship between protruding external filaments, dewatering characteristics and floc stability is unclear. Here, a quantitative methodology was applied to determine the abundance of filamentous bacteria in activated sludge samples from four wastewater treatment plants...
June 23, 2017: Water Research
https://www.readbyqxmd.com/read/28699061/hydroxypropyl-methylcellulose-2-for-dry-eye-prevention-during-phacoemulsification-in-senile-and-diabetic-patients
#6
Maierhaba Yusufu, Xin Liu, Tianyu Zheng, Fan Fan, Jianjiang Xu, Yi Luo
PURPOSE: To assess the effect of hydroxypropyl methylcellulose (HPMC) 2% to prevent dry eye during phacoemulsification in senile and diabetic patients. METHODS: This prospective interventional case series comprised 60 eyes (44 patients) with age-related cataract scheduled for standardized phacoemulsification surgery. The patients were assigned to receive either balanced saline solution (BSS, 30 eyes) or HPMC 2% (30 eyes) during surgery. Preoperative and postoperative examinations (1, 3, 7 and 30 days) included measurements of automatic noninvasive tear film breakup time (NITBUT), fluorescein staining, Schirmer I test, tear meniscus height, depth and area and subjective symptoms...
July 11, 2017: International Ophthalmology
https://www.readbyqxmd.com/read/28694687/efficacy-and-safety-of-retinol-palmitate-ophthalmic-solution-in-the-treatment-of-dry-eye-a-japanese-phase-ii-clinical-trial
#7
Hiroshi Toshida, Toshinari Funaki, Koichi Ono, Nobuhito Tabuchi, Sota Watanabe, Tamotsu Seki, Hiroshi Otake, Takuji Kato, Nobuyuki Ebihara, Akira Murakami
PURPOSE: The purpose of this study was to investigate the efficacy and safety of the administration of retinol palmitate (VApal) ophthalmic solution (500 IU/mL) for the treatment of patients with dry eye. PATIENTS AND METHODS: This study included 66 patients with dry eye. After a 2-week washout period, patients were randomized (1:1) into either a VApal ophthalmic solution or a placebo group, and a single drop of either solution was administered six times daily for 4 weeks...
2017: Drug Design, Development and Therapy
https://www.readbyqxmd.com/read/28694490/sea-ice-breakup-and-marine-melt-of-a-retreating-tidewater-outlet-glacier-in-northeast-greenland-81%C3%A2-n
#8
Jørgen Bendtsen, John Mortensen, Kunuk Lennert, Jens K Ehn, Wieter Boone, Virginie Galindo, Yu-Bin Hu, Igor A Dmitrenko, Sergei A Kirillov, Kristian K Kjeldsen, Yngve Kristoffersen, David G Barber, Søren Rysgaard
Rising temperatures in the Arctic cause accelerated mass loss from the Greenland Ice Sheet and reduced sea ice cover. Tidewater outlet glaciers represent direct connections between glaciers and the ocean where melt rates at the ice-ocean interface are influenced by ocean temperature and circulation. However, few measurements exist near outlet glaciers from the northern coast towards the Arctic Ocean that has remained nearly permanently ice covered. Here we present hydrographic measurements along the terminus of a major retreating tidewater outlet glacier from Flade Isblink Ice Cap...
July 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28691134/seizure-disorders-and-developmental-disorders-impact-on-life-of-affected-families-a-structured-interview
#9
Ulrike Petra Spindler, Lena Charlott Hotopp, Vivien Angela Bach, Frauke Hornemann, Steffen Syrbe, Anna Andreas, Andreas Merkenschlager, Wieland Kiess, Matthias Karl Bernhard, Thilo Bertsche, Martina Patrizia Neininger, Astrid Bertsche
Seizure disorder and developmental disorder are two of the most common chronic disorders in childhood. Data on perceived parental burden and specific effects on daily life is scarce. We performed a structured interview, consecutively talking to all parents of pediatric outpatients of our university hospital diagnosed with seizure or developmental disorder. Three hundred seven parents (of 317 affected children: 53 with seizure disorder, 44 with specific developmental disorder, 35 with learning disorder, 71 with intellectual disability, 15 with seizure + specific developmental disorder, 23 with seizure + learning disorder, 76 with seizure disorder + intellectual disability) were interviewed...
August 2017: European Journal of Pediatrics
https://www.readbyqxmd.com/read/28689165/tear-film-and-ocular-surface-assessment-in-psoriasis
#10
Emanuela Aragona, Laura Rania, Elisa Imelde Postorino, Alberto Interdonato, Roberta Giuffrida, Serafinella Patrizia Cannavò, Domenico Puzzolo, Pasquale Aragona
BACKGROUND: Psoriasis is a skin disease with also systemic involvement: its impact on the eye is not well established and often clinically underestimated. Aim of this study was to investigate the presence of ocular discomfort symptoms and of ocular surface changes in a population of patients with psoriasis. METHODS: For this cross-sectional, comparative study, 66 patients with psoriasis were subdivided according to the presence of arthritis and to the use of biological therapy...
July 8, 2017: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/28679130/efficacy-of-2-month-treatment-with-cord-blood-serum-eye-drops-in-ocular-surface-disease-an-in-vivo-confocal-microscopy-study
#11
Giuseppe Giannaccare, Marina Buzzi, Michela Fresina, Claudio Velati, Piera Versura
PURPOSE: To investigate the morphological changes of corneal epithelium and subbasal nerves by in vivo confocal microscopy in patients with ocular surface disease (OSD) treated with cord blood serum (CBS) eye drops. METHODS: Twenty patients with OSD (mean age 61.1 ± 12.6 years) were included in this prospective 1-arm study and treated with CBS eye drops for 2 months. Corneal sensitivity, Schirmer test score, breakup time, subjective symptoms [Ocular Surface Disease Index (OSDI) and Visual Analogue Scale (VAS)], and corneal staining were evaluated before (T0) and after (T1) treatment...
August 2017: Cornea
https://www.readbyqxmd.com/read/28673970/phylogenomics-reveals-rapid-simultaneous-diversification-of-three-major-clades-of-gondwanan-frogs-at-the-cretaceous-paleogene-boundary
#12
Yan-Jie Feng, David C Blackburn, Dan Liang, David M Hillis, David B Wake, David C Cannatella, Peng Zhang
Frogs (Anura) are one of the most diverse groups of vertebrates and comprise nearly 90% of living amphibian species. Their worldwide distribution and diverse biology make them well-suited for assessing fundamental questions in evolution, ecology, and conservation. However, despite their scientific importance, the evolutionary history and tempo of frog diversification remain poorly understood. By using a molecular dataset of unprecedented size, including 88-kb characters from 95 nuclear genes of 156 frog species, in conjunction with 20 fossil-based calibrations, our analyses result in the most strongly supported phylogeny of all major frog lineages and provide a timescale of frog evolution that suggests much younger divergence times than suggested by earlier studies...
July 3, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28670502/impact-of-glaucoma-and-dry-eye-on-text-based-searching
#13
Michelle J Sun, Gary S Rubin, Esen K Akpek, Pradeep Y Ramulu
PURPOSE: We determine if visual field loss from glaucoma and/or measures of dry eye severity are associated with difficulty searching, as judged by slower search times on a text-based search task. METHODS: Glaucoma patients with bilateral visual field (VF) loss, patients with clinically significant dry eye, and normally-sighted controls were enrolled from the Wilmer Eye Institute clinics. Subjects searched three Yellow Pages excerpts for a specific phone number, and search time was recorded...
June 2017: Translational Vision Science & Technology
https://www.readbyqxmd.com/read/28670353/effects-of-living-cells-on-the-bioink-printability-during-laser-printing
#14
Zhengyi Zhang, Changxue Xu, Ruitong Xiong, Douglas B Chrisey, Yong Huang
Laser-induced forward transfer has been a promising orifice-free bioprinting technique for the direct writing of three-dimensional cellular constructs from cell-laden bioinks. In order to optimize the printing performance, the effects of living cells on the bioink printability must be carefully investigated in terms of the ability to generate well-defined jets during the jet/droplet formation process as well as well-defined printed droplets on a receiving substrate during the jet/droplet deposition process...
May 2017: Biomicrofluidics
https://www.readbyqxmd.com/read/28667281/mitochondrial-genomes-of-two-australian-fishflies-with-an-evolutionary-timescale-of-chauliodinae
#15
Fan Yang, Yunlan Jiang, Ding Yang, Xingyue Liu
Fishflies (Corydalidae: Chauliodinae) with a total of ca. 130 extant species are one of the major groups of the holometabolous insect order Megaloptera. As a group which originated during the Mesozoic, the phylogeny and historical biogeography of fishflies are of high interest. The previous hypothesis on the evolutionary history of fishflies was based primarily on morphological data. To further test the existing phylogenetic relationships and to understand the divergence pattern of fishflies, we conducted a molecule-based study...
June 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28666116/friction-at-the-bar-leads-to-membrane-breakup
#16
Kranthi K Mandadapu, James H Hurley
A long-standing question in cell biology is how endocytic vesicles and tubules detach from the plasma membrane in the absence of constriction by dynamin. In this issue of Cell, Simunovic et al. describe an elegant biophysical model in which friction between lipids and BAR-domain proteins drives the scission of elongating membrane tubules.
June 29, 2017: Cell
https://www.readbyqxmd.com/read/28665662/adiabatic-invariant-approach-to-transverse-instability-landau-dynamics-of-soliton-filaments
#17
P G Kevrekidis, Wenlong Wang, R Carretero-González, D J Frantzeskakis
Consider a lower-dimensional solitonic structure embedded in a higher-dimensional space, e.g., a 1D dark soliton embedded in 2D space, a ring dark soliton in 2D space, a spherical shell soliton in 3D space, etc. By extending the Landau dynamics approach [Phys. Rev. Lett. 93, 240403 (2004)PRLTAO0031-900710.1103/PhysRevLett.93.240403], we show that it is possible to capture the transverse dynamical modes (the "Kelvin modes") of the undulation of this "soliton filament" within the higher-dimensional space. These are the transverse stability or instability modes and are the ones potentially responsible for the breakup of the soliton into structures such as vortices, vortex rings, etc...
June 16, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28658179/ablative-fractional-laser-resurfacing-with-laser-assisted-delivery-of-5-fluorouracil-for-the-treatment-of-cicatricial-ectropion-and-periocular-scarring
#18
Bradford W Lee, Alexandra E Levitt, Benjamin P Erickson, Audrey C Ko, Neda Nikpoor, Nisreen Ezuddin, Wendy W Lee
PURPOSE: Cicatricial ectropion and periocular scarring can cause significant functional and cosmetic deficits. Surgical treatments can be associated with recicatrization, donor site morbidity, and textural and pigmentary abnormalities. This case series reports on efficacy and safety of a novel nonsurgical approach to treating cicatricial ectropion using ablative fractional laser resurfacing and laser-assisted delivery of 5-fluorouracil. METHODS: A retrospective review was conducted of all patients at a single institution who received ≥3 rounds of ablative fractional laser resurfacing with laser-assisted delivery of 5-fluorouracil...
June 27, 2017: Ophthalmic Plastic and Reconstructive Surgery
https://www.readbyqxmd.com/read/28642348/confined-in-fiber-solidification-and-structural-control-of-silicon-and-silicon-germanium-microparticles
#19
Alexander Gumennik, Etgar C Levy, Benjamin Grena, Chong Hou, Michael Rein, Ayman F Abouraddy, John D Joannopoulos, Yoel Fink
Crystallization of microdroplets of molten alloys could, in principle, present a number of possible morphological outcomes, depending on the symmetry of the propagating solidification front and its velocity, such as axial or spherically symmetric species segregation. However, because of thermal or constitutional supercooling, resulting droplets often only display dendritic morphologies. Here we report on the crystallization of alloyed droplets of controlled micrometer dimensions comprising silicon and germanium, leading to a number of surprising outcomes...
July 11, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28638660/analysis-of-clinical-characteristics-of-immune-related-dry-eye
#20
Hua Wang, Ping-Bao Wang, Ting Chen, Jing Zou, Ya-Jia Li, Xu-Fang Ran, Qiang-Xiang Li
AIM: To discuss the clinical characteristics of immune-related dry eye. METHODS: Simple dry eye (SDE) group: we selected 224 patients of simple dry eye with no systemic lesions. Immune-related dry eye (IRDE) group: we selected 207 patients of dry eye complicated with immune system diseases, including 70 cases of Sjögren's syndrome (SS), 72 cases of systemic lupus erythematosus (SLE), and 65 cases of rheumatoid arthritis (RA). The classification of all patients was performed...
2017: Journal of Ophthalmology
keyword
keyword
3027
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"