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https://www.readbyqxmd.com/read/29347638/effects-of-group-velocity-and-multiplasmon-resonances-on-the-modulation-of-langmuir-waves-in-a-degenerate-plasma
#1
Amar P Misra, Debjani Chatterjee, Gert Brodin
We study the nonlinear wave modulation of Langmuir waves (LWs) in a fully degenerate plasma. Using the Wigner-Moyal equation coupled to the Poisson equation and the multiple scale expansion technique, a modified nonlocal nonlinear Schrödinger (NLS) equation is derived which governs the evolution of LW envelopes in degenerate plasmas. The nonlocal nonlinearity in the NLS equation appears due to the group velocity and multiplasmon resonances, i.e., resonances induced by the simultaneous particle absorption of multiple wave quanta...
November 2017: Physical Review. E
https://www.readbyqxmd.com/read/29324395/effects-of-lanthanum-on-microcystis-aeruginosa-attention-to-the-changes-in-composition-and-content-of-cellular-microcystins
#2
Fei Shen, Lihong Wang, Qing Zhou, Xiaohua Huang
Algal blooms threaten human health and aquatic ecosystem through the production of microcystins (MCs) by toxic strains. The accumulation of rare earth elements (REEs) in water affects the growth and physiological activities of algae. However, whether or how REEs affect cellular microcystins (MCs) is largely unknown. In this study, the effects of lanthanum ion [La(III)], a type of REE, on the MCs in Microcystis aeruginosa were investigated, and the mechanism of the effect was analyzed using ecological stoichiometry...
January 6, 2018: Aquatic Toxicology
https://www.readbyqxmd.com/read/29321884/gut-microbiota-composition-is-associated-with-environmental-landscape-in-honey-bees
#3
Julia C Jones, Carmelo Fruciano, Falk Hildebrand, Hasan Al Toufalilia, Nicholas J Balfour, Peer Bork, Philipp Engel, Francis Lw Ratnieks, William Oh Hughes
There is growing recognition that the gut microbial community regulates a wide variety of important functions in its animal hosts, including host health. However, the complex interactions between gut microbes and environment are still unclear. Honey bees are ecologically and economically important pollinators that host a core gut microbial community that is thought to be constant across populations. Here, we examined whether the composition of the gut microbial community of honey bees is affected by the environmental landscape the bees are exposed to...
January 2018: Ecology and Evolution
https://www.readbyqxmd.com/read/29320672/position-statement-a-clinical-approach-to-the-management-of-adult-non-neurogenic-overactive-bladder
#4
Eric Chung, Dominic Lee, Johan Gani, Michael Gillman, Christopher Maher, Janelle Brennan, Lydia Johns Putra, Laura Ahmad, Lewis Lw Chan
Overactive bladder (OAB) is a highly prevalent medical condition that has an adverse impact on various health-related quality-of-life domains, including a significant psychosocial and financial burden. This position statement, formulated by members of the Urological Society of Australia and New Zealand and the UroGynaecological Society of Australasia, summarises the current recommendations for clinical diagnosis and treatment strategies in patients with non-neurogenic OAB, and guides clinicians in the decision-making process for managing the condition using evidence-based medicine...
January 15, 2018: Medical Journal of Australia
https://www.readbyqxmd.com/read/29320633/bioaccumulation-of-polybrominated-diphenyl-ethers-pbdes-and-alternative-halogenated-flame-retardants-in-a-vegetation-caribou-wolf-food-chain-of-the-canadian-arctic
#5
Adam David Morris, Derek Muir, Keith Solomon, Camilla Teixeira, Mark Duric, Xiaowa Wang
The trophodynamics of halogenated flame retardants (HFRs) including polybrominated diphenyl ethers (PBDEs) and alternative HFRs were investigated in the terrestrial, vegetation-caribou-wolf food chain in the Bathurst Region of northern Canada. The greatest concentrations in vegetation (geometric mean of lichens, moss, grasses, willow, and mushrooms) were of the order 2,4,6-tribromophenyl allyl ether (TBP-AE) (10 ng g-1 lw) > BDE47 (5.5 ng g-1 lw) > BDE99 (3.9 ng g-1 lw) > BDE100 (0.82 ng g-1 lw) > 1,2,3,4,5-pentabromobenzene (PBBz) (0...
January 10, 2018: Environmental Science & Technology
https://www.readbyqxmd.com/read/29305779/evidence-of-glucuronidation%C3%A2-of-the-glycation-product-lw-1-tentative-structure-and-implications-for-the-long-term-complications-of-diabetes
#6
David R Sell, Ina Nemet, Zhili Liang, Vincent M Monnier
LW-1 is a collagen-linked blue fluorophore whose skin levels increase with age, diabetes and end-stage renal disease (ESRD), and correlate with the long-term progression of microvascular disease and indices of subclinical cardiovascular disease in type 1 diabetes. The chemical structure of LW-1 is still elusive, but earlier NMR analyses showed it has a lysine residue in an aromatic ring coupled to a sugar molecule reminiscent of advanced glycation end-products (AGEs). We hypothesized and demonstrate here that the unknown sugar is a N-linked glucuronic acid...
January 5, 2018: Glycoconjugate Journal
https://www.readbyqxmd.com/read/29304723/adsorption-of-polypropylene-oxide-polyethylene-oxide-type-surfactants-at-surfaces-of-pharmaceutical-relevant-materials-effect-of-surface-energetics-and-surfactant-structures
#7
Jinjiang Li, Sneha Rudraraju, Songyan Zheng, Archana Jaiswal
Protein therapeutics are exposed to various surfaces during product development, where their adsorption possibly causes unfolding, denaturation, and aggregation. In this paper, we aim to characterize four types of typical surfaces used in the development of biologics: polycarbonate, polyethersulfone, borosilicate glass, and cellulose. Contact angles of these surfaces were measured using three probing liquids: water, formamide, and diidomethane, from which acid/base (AB) and Lifshitz-van der Waals (LW) interaction components were derived...
January 5, 2018: Pharmaceutical Development and Technology
https://www.readbyqxmd.com/read/29289770/towards-a-better-understanding-of-long-term-wood-chemistry-variations-in-old-growth-forests-a-case-study-on-ancient-pinus-uncinata-trees-from-the-pyrenees
#8
Andrea Hevia, Raúl Sánchez-Salguero, J Julio Camarero, Allan Buras, Gabriel Sangüesa-Barreda, J Diego Galván, Emilia Gutiérrez
Dendrochemical studies in old forests are still underdeveloped. Old trees growing in remote high-elevation areas far from direct human influence constitute a promising biological proxy for the long-term reconstructions of environmental changes using tree-rings. Furthermore, centennial-long chronologies of multi-elemental chemistry at inter- and intra-annual resolution are scarce. Here, we use a novel non-destructive method by applying Micro X-ray fluorescence (μXRF) to wood samples of old Pinus uncinata trees from two Pyrenean high-elevation forests growing on acidic and basic soils...
December 28, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29280379/large-area-self-assembly-of-silica-micro-nanospheres-by-temperature-assisted-dip-coating
#9
Carlos Garcia Nunez, William Taube Navaraj, Fengyuan Liu, Dhayalan Shakthivel, Ravinder S Dahiya
This work reports a temperature-assisted dip-coating method for self-assembly of silica (SiO2) micro-/nano-spheres (SPs) as monolayers over large areas (~cm2). The area over which self-assembled monolayers (SAMs) are formed can be controlled by tuning the suspension temperature (Ts), which allows precise control over meniscus shape. Furthermore, the formation of periodic stripes of SAM, with excellent dimensional control (stripe width and stripe-to-stripe spacing), is demonstrated using a suitable set of dip-coating parameters...
December 27, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29273011/time-course-study-of-the-response-to-lps-targeting-the-pig-immune-gene-networks
#10
Elena Terenina, Valérie Sautron, Caroline Ydier, Darya Bazovkina, Amélie Sevin-Pujol, Laure Gress, Yannick Lippi, Claire Naylies, Yvon Billon, Laurence Liaubet, Pierre Mormede, Nathalie Villa-Vialaneix
BACKGROUND: Stress is a generic term used to describe non-specific responses of the body to all kinds of challenges. A very large variability in the response can be observed across individuals, depending on numerous conditioning factors like genetics, early influences and life history. As a result, there is a wide range of individual vulnerability and resilience to stress, also called robustness. The importance of robustness-related traits in breeding strategies is increasing progressively towards the production of animals with a high level of production under a wide range of climatic conditions and management systems, together with a lower environmental impact and a high level of animal welfare...
December 22, 2017: BMC Genomics
https://www.readbyqxmd.com/read/29250512/comparison-of-partially-absorbable-lightweight-mesh-with-heavyweight-mesh-for-inguinal-hernia-repair-multicenter-randomized-study
#11
Seong Dae Lee, Taeil Son, Jae-Bum Lee, Yeon Soo Chang
Purpose: Prosthetic mesh is widely used for inguinal hernia repair; however, pain and stiffness can develop. This study was a prospective, multicenter, single-blind, randomized trial to assess postoperative pain and quality of life according to mesh type after inguinal hernia repair. Methods: Forty-seven patients who underwent Lichtenstein repair for unilateral inguinal hernia with prosthetic mesh were enrolled and randomly allocated to the partially-absorbable lightweight mesh (LW group, n = 24) or heavyweight mesh group (HW group, n = 23)...
December 2017: Annals of Surgical Treatment and Research
https://www.readbyqxmd.com/read/29239613/dewetting-of-thin-liquid-films-surrounding-air-bubbles-in-microchannels
#12
Sepideh Khodaparast, Omer Atasi, Antoine Deblais, Benoit Scheid, Howard A Stone
As an air bubble translates in a microchannel, a thin film of liquid is formed on the bounding walls. In a microchannel with a rectangular cross section, the liquid in the film leaks towards the low-pressure corners of the geometry, which leads to the appearance of local minima in the film thickness in the cross-sectional plane. In such a configuration, theory suggests that the minimum film thickness scales with Ca and Ca(4/3) depending on the distance from the nose of the bubble, where Ca = μUb/γ is the flow capillary number based on the bubble velocity Ub, liquid viscosity μ and surface tension γ...
December 14, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/29226840/challenges-to-the-adoption-of-risk-algorithms-for-colorectal-cancer-screening-programmes-perspectives-for-future-research
#13
J J Huang, J Lw Huang
No abstract text is available yet for this article.
December 2017: Hong Kong Medical Journal, Xianggang Yi Xue za Zhi
https://www.readbyqxmd.com/read/29226837/nephrolithiasis-associated-with-the-use-of-topiramate-in-children
#14
K M Yam, M Ly Yau, E Lw Fung
No abstract text is available yet for this article.
December 2017: Hong Kong Medical Journal, Xianggang Yi Xue za Zhi
https://www.readbyqxmd.com/read/29216797/mandibular-condylar-dimensions-correlation-between-3d-tomography-and-dried-skull-measurements
#15
Rafaela Scariot, Briana Gonsar, Navenett Gill, Fabio Furquim, Paola Fernanda Cotait de Lucas Corso, Paula Cristina Trevillato, Anitha Potluri, Alexandre Rezende Vieira
Objective Compare the anatomical dimensions of mandibular condyles with the same CBCT measurements. Methods Four landmarks were identified on the condyles of dried skulls and are measured with their corresponding areas in CBCT images: Right Width of Condyle (RW), Left Width of Condyle (LW), Right Length of Condyle (RL), and Left Length of Condyle (LL). Results With respect to direct measurements on the dry skulls, statistically significant differences were found between sexes (p < 0.001). When the real values were compared with the CBCT, it was observed that the bias depends on the magnitude of the measurement...
December 8, 2017: Cranio: the Journal of Craniomandibular Practice
https://www.readbyqxmd.com/read/29216358/rapid-protective-effects-of-early-bcg-on-neonatal-mortality-among-low-birth-weight-boys-observations-from-randomised-trials
#16
Sofie Biering-Sørensen, Kristoffer Jarlov Jensen, Ivan Monterio, Henrik Ravn, Peter Aaby, Christine Stabell Benn
Background: Three randomised trials (RCTs) in low-weight (LW, <2.5 kg) infants have shown that Bacille Calmette-Guérin (BCG) vaccine non-specifically reduces all-cause mortality in the neonatal period. Methods: Using data from three RCTs of early BCG (N=6,583) we examined potential sex-differences in the timing of the mortality reduction in the neonatal period, presenting meta-estimates of the main outcome mortality rate ratios (MRR) for BCG-vaccinated and controls...
December 5, 2017: Journal of Infectious Diseases
https://www.readbyqxmd.com/read/29202108/kras-biomarker-testing-disparities-in-colorectal-cancer-patients-in-new-mexico
#17
Alissa Greenbaum, Charles Wiggins, Angela Lw Meisner, Manuel Rojo, Anita Y Kinney, Ashwani Rajput
Introduction: American Society of Clinical Oncology (ASCO) guidelines recommend that all patients with metastatic colorectal cancer (mCRC) receive KRAS testing to guide anti-EGFR monoclonal antibody treatment. The aim of this study was to assess for disparities in KRAS testing and mutational status. Methods: The New Mexico Tumor Registry (NMTR), a population-based cancer registry participating in the National Cancer Institute's Surveillance, Epidemiology and End Results program, was queried to identify all incident cases of CRC diagnosed among New Mexico residents from 2010 to 2013...
November 2017: Heliyon
https://www.readbyqxmd.com/read/29196258/lw-215-a-newly-synthesized-flavonoid-exhibits-potent-anti-angiogenic-activity-in-vitro-and-in-vivo
#18
REVIEW
Kai Zhao, Yang Yuan, Binyan Lin, Zhaorui Miao, Zhiyu Li, Qinglong Guo, Na Lu
LW-215 is a newly synthesized flavonoid, which is the derivative of wogonin. Our group has previously confirmed that wogonin has an anti-angiogenic activity, while the anti-angiogenic effect of LW-215 is unclear. In this study, we explored whether LW-215 can inhibit angiogenesis and further probed the potential molecular mechanisms. We found that LW-215 inhibited migration and tube formation in human umbilical vein endothelial cells (HUVECs) and immortalized endothelial EA.hy926 cells without a significant decrease in cell viability...
November 28, 2017: Gene
https://www.readbyqxmd.com/read/29192494/regulated-and-unregulated-halogenated-flame-retardants-in-peregrine-falcon-eggs-from-greenland
#19
Katrin Vorkamp, Knud Falk, Soren Moller, Frank Rigét, Peter Borgen Sørensen
Median levels of regulated flame retardants, i.e. polybrominated diphenyl ethers (PBDEs), brominated biphenyl (BB) 153 and hexabromocyclododecane (HBCD) in 33-48 eggs of peregrine falcons (Falco peregrinus) from Greenland were 1900, 359 and 5.98 ng/g lipid weight (lw) and generally intermediate to levels in North America and Europe. Unregulated flame retardants had lower median concentrations of 1.06 (2-ethylhexyl-2,3,4,5-tetrabromobenzoate, EH-TBB), 2.42 (1,2-bis(2,4,6-tribromophenoxy)-ethane, BTBPE), 0.52 (2,4,6-tribromophenyl 2,3-dibromopropyl ether, DPTE) and 4...
December 1, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/29190704/electrocortical-correlates-of-human-level-ground-slope-and-stair-walking
#20
Trieu Phat Luu, Justin A Brantley, Sho Nakagome, Fangshi Zhu, Jose L Contreras-Vidal
This study investigated electrocortical dynamics of human walking across different unconstrained walking conditions (i.e., level ground (LW), ramp ascent (RA), and stair ascent (SA)). Non-invasive active-electrode scalp electroencephalography (EEG) signals were recorded and a systematic EEG processing method was implemented to reduce artifacts. Source localization combined with independent component analysis and k-means clustering revealed the involvement of four clusters in the brain during the walking tasks: Left and Right Occipital Lobe (LOL, ROL), Posterior Parietal Cortex (PPC), and Central Sensorimotor Cortex (SMC)...
2017: PloS One
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