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https://www.readbyqxmd.com/read/28931148/previous-exposure-in-a-high-risk-area-for-travellers-diarrhoea-within-the-past-year-is-associated-with-a-significant-protective-effect-for-travellers-diarrhoea-a-prospective-observational-cohort-study-in-travellers-to-south-asia
#1
Esther Kuenzli, David Juergensen, Kerstin Kling, Veronika K Jaeger, Susan DeCrom, Robert Steffen, Andreas F Widmer, Manuel Battegay, Christoph Hatz, Andreas Neumayr
Background: Travellers' diarrhoea is the most common health problem in travellers. Depending on the region visited, up to 40% of travellers develop diarrhoea during a 2-week trip. The aim of this study was to assess risk factors for TD among travellers to the Indian subcontinent. Methods: An observational prospective multicentre cohort study investigated travellers to the Indian subcontinent. Participants completed questionnaires assessing the incidence of travellers' diarrhoea and identifying potential risk factors...
September 1, 2017: Journal of Travel Medicine
https://www.readbyqxmd.com/read/28930489/an-overview-of-the-clinical-outcomes-of-the-fluocinolone-acetonide-190%C3%A2-%C3%A2%C2%B5g-intravitreal-implant-clinical-evidence-study-in-the-united-kingdom-ice-uk
#2
Tunde Peto
No abstract text is available yet for this article.
October 2017: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/28930488/the-impact-of-repeated-freeze-thaw-cycles-on-the-quality-of-biomolecules-in-four-different-tissues
#3
Xiaoli Ji, Min Wang, Lingling Li, Fang Chen, Yanyang Zhang, Qian Li, Junmei Zhou
High-quality biosamples are valuable resources for biomedical research. However, some tissues are stored without being sectioned into small aliquots and have to undergo repeated freeze-thaw cycles throughout prolonged experimentation. Little is known regarding the effects of repeated freeze-thaw cycles on the quality of biomolecules in tissues. The aim of this study was to evaluate the impact of repeated freeze-thaw (at room temperature or on ice) cycles on biomolecules and gene expression in four different types of tissues...
September 20, 2017: Biopreservation and Biobanking
https://www.readbyqxmd.com/read/28929689/-comparatively-evaluating-effect-contribution-of-promoting-blood-circulation-of-herb-pairs-containing-angelicae-sinensis-radix-on-xin-sheng-hua-granule-by-withdrawal-analysis
#4
Han-Qing Pang, Jun Wang, Yu-Ping Tang, Liang Wu, Hui-Qin Xu, Yi Jin, Zhen-Hua Zhu, Sheng-Liang Huang, Da-Zheng Sun, Jin-Ao Duan
Xin-Sheng-Hua granule (XSHG) is a popular remedy commonly used in clinic for the treatment of lochiostasis after delivery. To comparatively investigate the roles of herb pairs containing Angelicae Sinensis Radix (Danggui) upon the formula by evaluating the blood coagulation and hemorheology function in acute blood stasis rats, acute blood stasis rat model was established by ice water bath and subcutaneous injection of adrenaline. And the blood stasis mice were administrated intragastrically with different samples of the formula minus herb pairs containing Danggui and the whole formula (XSHG, SHD, DY, DC, DT, DH, DJ and DZ)...
November 2016: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/28929162/interactions-and-stabilisation-of-acetone-sulfur-dioxide-and-water-with-1-octyl-3-methylimidazolium-tetrafluoroborate-omim-bf4-at-low-temperatures
#5
Matthew Buckley, Karen L Syres, Robert G Jones
The interactions between three small molecules, water (H2O), sulfur dioxide (SO2) and acetone ((CH3)2CO), with the ionic liquid (IL) 1-octyl-3-methylimidazolium tetrafluoroborate, [OMIM][BF4], have been determined using line of sight temperature programmed desorption (LOSTPD) from a gold surface. Multilayers of the IL were deposited by physical vapour deposition with multilayers of the small molecular species (adsorbed from the gas phase) at 90 K. LOSTPD was then carried out with the small molecular species desorbing first from the mixed multilayer, followed at higher temperatures by desorption of the IL from the gold surface...
September 20, 2017: Faraday Discussions
https://www.readbyqxmd.com/read/28928424/genome-characterization-of-two-bile-isolated-vibrio-fluvialis-strains-an-insight-into-pathogenicity-and-bile-salt-adaption
#6
Beiwen Zheng, Xiawei Jiang, Hong Cheng, Lihua Guo, Jing Zhang, Hao Xu, Xiao Yu, Chen Huang, Jinru Ji, Chaoqun Ying, Youjun Feng, Yonghong Xiao, Lanjuan Li
Vibrio fluvialis is recognized as an emerging pathogen. However, not much is known about the mechanism of its pathogenesis, and its adaptation to a special niche such as the gall bladder. Here we describe two V. fluvialis strains that cause acute cholecystitis. It is noteworthy that both strains were susceptible to all antibiotics tested, which is in contrast to previous studies, suggesting substantial genetic diversity among V. fluvialis isolates. In agreement with their survival and growth in the gall bladder, the genomes of strains 12605 and 3663 contain a considerable number of genes that confer resistance to bile, including toxR, omp U, tolC, cmeABC, rlpB, yrbK, rpoS, damX and gltK...
September 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28928396/balance-between-hydration-enthalpy-and-entropy-is-important-for-ice-binding-surfaces-in-antifreeze-proteins
#7
Michael Schauperl, Maren Podewitz, Teresa S Ortner, Franz Waibl, Alexander Thoeny, Thomas Loerting, Klaus R Liedl
Antifreeze Proteins (AFPs) inhibit the growth of an ice crystal by binding to it. The detailed binding mechanism is, however, still not fully understood. We investigated three AFPs using Molecular Dynamics simulations in combination with Grid Inhomogeneous Solvation Theory, exploring their hydration thermodynamics. The observed enthalpic and entropic differences between the ice-binding sites and the inactive surface reveal key properties essential for proteins in order to bind ice: While entropic contributions are similar for all sites, the enthalpic gain for all ice-binding sites is lower than for the rest of the protein surface...
September 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28926642/a-late-holocene-pollen-record-from-proglacial-oblong-tarn-mount-kenya
#8
Colin J Courtney Mustaphi, Konrad Gajewski, Rob Marchant, Gunhild Rosqvist
High-elevation ecosystems, such as those on Mount Kenya are undergoing significant changes, with accelerated glacial ice losses over the twentieth century creating new space for alpine plants to establish. These ecosystems respond rapidly to climatic variability and within decades of glacial retreat, Afroalpine pioneering taxa stabilize barren land and facilitate soil development, promoting complex patches of alpine vegetation. Periglacial lake sediment records can be used to examine centennial and millennial scale variations in alpine and montane vegetation compositions...
2017: PloS One
https://www.readbyqxmd.com/read/28925681/enhanced-coalescence-induced-droplet-jumping-on-nanostructured-superhydrophobic-surfaces-in-the-absence-of-microstructures
#9
Peng Zhang, Yota Maeda, Fengyong Lv, Yasuyuki Takata, Daniel Orejon
Superhydrophobic surfaces are receiving increasing attention due to the enhanced condensation heat transfer, self-cleaning and anti-icing properties by easing droplet self-removal. Despite the extensive research carried out in this topic, the presence or absence of microstructures on droplet adhesion during condensation has not been addressed yet. In this work we, therefore, address the condensation behavior on engineered superhydrophobic copper oxide surfaces with different structural finishes. More specifically, we investigate the coalescence-induced droplet-jumping performance on superhydrophobic surfaces with structures varying from the micro- to the nano-scale...
September 19, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28925251/understanding-and-predicting-the-fate-of-semi-volatile-organic-pesticides-in-a-glacier-fed-lake-using-a-multimedia-chemical-fate-model
#10
Xiaolin Wu, Cleo Lisa Davie-Martin, Christine Steinlin, Kimberly J Hageman, Nicolas J Cullen, Christian Bogdal
Melting glaciers release previously ice-entrapped chemicals to the surrounding environment. As glacier melting accelerates under future climate warming, chemical release may also increase. This study investigated the behavior of semi-volatile pesticides over the course of one year and predicted their behavior under two future climate change scenarios. Pesticides were quantified in air, lake water, glacial melt water, and stream water in the catchment of Lake Brewster, an alpine glacier-fed lake located in the Southern Alps of New Zealand...
September 19, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28924540/analysis-of-meiotic-segregation-patterns-and-interchromosomal-effects-in-sperm-from-13-robertsonian-translocations
#11
B Wang, B Nie, D Tang, R Li, X Liu, J Song, W Wang, Z Liu
The frequency of the Robertonian (ROB) translocation in newborn babies is approximately one in 1000. Robertsonian translocation is an unusual type of chromosome rearrangement caused by two particular chromosomes joining together. The aim of the study was to analyze the segregation of the ROB translocations in 13 male carriers, and to verify a possible inter-chromosomal effect (ICE) of the ROB translocation on chromosomes 18, X, and Y. Thirteen male patients were included in the study. Multicolor fluorescent in situ hybridization (FISH) was used to analyze chromosomes 13, 14, 15, 21, 22, 18, X and Y in sperm...
June 30, 2017: Balkan Journal of Medical Genetics: BJMG
https://www.readbyqxmd.com/read/28923760/commonly-used-patient-reported-outcomes-do-not-improve-prediction-of-copd-exacerbations-a-multicenter-4-5-year-prospective-cohort-study
#12
Alexandra Strassmann, Anja Frei, Sarah R Haile, Gerben Ter Riet, Milo A Puhan
BACKGROUND: Several cross-sectional and short-term studies suggest that patient-reported outcomes (PROs) may be useful to (help) predict COPD exacerbations but evidence from long-term prospective cohort studies is missing. Our aim was to assess if PROs add to the prediction of exacerbations. METHODS: 408 primary care COPD patients participated in the multicenter prospective ICE COLD ERIC cohort. PROs included the Chronic Respiratory Disease Questionnaire, the Hospital Anxiety and Depression Scale, the Feeling Thermometer and the LASA Physical Activity Questionnaire (LAPAQ)...
September 15, 2017: Chest
https://www.readbyqxmd.com/read/28923342/total-mercury-concentrations-in-liver-and-muscle-of-european-whitefish-coregonus-lavaretus-l-in-a-subarctic-lake-assessing-the-factors-driving-year-round-variation
#13
Ossi Keva, Brian Hayden, Chris Harrod, Kimmo K Kahilainen
Subarctic lakes are characterised by extreme seasonal variation in light and temperature which influences growth, maturation, condition and resource use of fishes. However, our understanding of how seasonal changes affect mercury concentrations of fishes is limited. We conducted a year-round study (3 ice-covered months, 3 open-water months) with open-water inter-annual aspect (3 years: samples from August/September), focusing on total mercury (THg) concentrations and ecological characteristics of a common freshwater fish, European whitefish (Coregonus lavaretus (L...
September 16, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28922643/vacuum-ultraviolet-photoabsorption-of-prime-ice-analogues-of-pluto-and-charon
#14
S Pavithraa, J-I Lo, K Rahul, B N Raja Sekhar, B-M Cheng, N J Mason, B Sivaraman
Here we present the first Vacuum UltraViolet (VUV) photoabsorption spectra of ice analogues of Pluto and Charon ice mixtures. For Pluto the ice analogue is an icy mixture containing nitrogen (N2), carbon monoxide (CO), methane (CH4) and water (H2O) prepared with a 100:1:1:3 ratio, respectively. Photoabsorption of icy mixtures with and without H2O were recorded and no significant changes in the spectra due to presence of H2O were observed. For Charon a VUV photoabsorption spectra of an ice analogue containing ammonia (NH3) and H2O prepared with a 1:1 ratio was recorded, a spectrum of ammonium hydroxide (NH4OH) was also recorded...
August 26, 2017: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy
https://www.readbyqxmd.com/read/28922601/substrate-dependence-of-the-freezing-dynamics-of-supercooled-water-films-a-high-speed-optical-microscope-study
#15
Elzbieta Pach, Laura Rodríguez, Albert Verdaguer
The freezing of supercooled water films on silicon-based surfaces was investigated using a high-speed camera coupled to an optical microscope. We were able to study in detail the two phases or stages in during water freezing; the first stage, faster, when dendritic grow occurs co-planar with the cold surface of the substrate and the second stage, slower, when the ice formed on the surface grows vertically until all the film is frozen. Several differentiated processes were identified during the freezing: two dimensional dendrite growing on the substrate interface, vertical dendrite growing, formation and evolution of ice domains, trapping of air bubbles in ice and freezing of the water film surface...
September 18, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28921398/preliminary-analysis-of-numerical-chromosome-abnormalities-in-reciprocal-and-robertsonian-translocation-preimplantation-genetic-diagnosis-cases-with-24-chromosomal-analysis-with-an-acgh-snp-microarray
#16
Yanxin Xie, Yanwen Xu, Jing Wang, Benyu Miao, Yanhong Zeng, Chenhui Ding, Jun Gao, Canquan Zhou
PURPOSE: The aim of this study was to determine whether an interchromosomal effect (ICE) occurred in embryos obtained from reciprocal translocation (rcp) and Robertsonian translocation (RT) carriers who were following a preimplantation genetic diagnosis (PGD) with whole chromosome screening with an aCGH and SNP microarray. We also analyzed the chromosomal numerical abnormalities in embryos with aneuploidy in parental chromosomes that were not involved with a translocation and balanced in involved parental translocation chromosomes...
September 18, 2017: Journal of Assisted Reproduction and Genetics
https://www.readbyqxmd.com/read/28920835/erythrobacter-arachoides-sp-nov-isolated-from-ice-core
#17
Tingting Xing, Yongqin Liu, Ninglian Wang, Baiqing Xu, Keshao Liu, Liang Shen, Zhengquan Gu, Bixi Guo, Yuguang Zhou, Hongcan Liu
A Gram-stain-negative, rod-shaped bacterial strain, designed RC4-10-4T, belonging to the genus Erythrobacter, was isolated from the East Rongbuk Glacier on the Tibetan Plateau. Strain RC4-10-4T grew optimally at pH 7.0, at 25 °C and in the presence of 2 % (w/v) NaCl. Summed feature 3 (C16 : 1 ω6c and/or iso-C15 : 0 2-OH), summed feature 8 (C18 : 1 ω7c and/or C18 : 1 ω6c) and C16 : 0 were the major fatty acids. The major polar lipids were phosphatidylethanolamine, phosphatidylglycerol, diphosphatidylglycerol, sphingoglycolipid and phosphatidylcholine...
September 18, 2017: International Journal of Systematic and Evolutionary Microbiology
https://www.readbyqxmd.com/read/28920689/a-320-year-ice-core-record-of-atmospheric-hg-pollution-in-the-altai-central-asia
#18
Stella Eyrikh, Anja Eichler, Leonhard Tobler, Natalia Malygina, Tatyana Papina, Margit Schwikowski
Anthropogenic emissions of the toxic heavy metal mercury (Hg) have substantially increased atmospheric Hg levels during the 20th century compared to pre-industrial times. However, on a regional scale, atmospheric Hg concentration or deposition trends vary to such an extent during the industrial period that the consequences of recent Asian emissions on atmospheric Hg levels are still unclear. Here we present a 320-year Hg deposition history for Central Asia, based on a continuous high-resolution ice-core Hg record from the Belukha glacier in the Siberian Altai, covering the time period 1680-2001...
September 18, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28919936/polar-applications-of-spaceborne-scatterometers
#19
David G Long
Wind scatterometers were originally developed for observation of near-surface winds over the ocean. They retrieve wind indirectly by measuring the normalized radar cross section (σ(o) ) of the surface, and estimating the wind via a geophysical model function relating σ(o) to the vector wind. The σ(o) measurements have proven to be remarkably capable in studies of the polar regions where they can map snow cover; detect the freeze/thaw state of forest, tundra, and ice; map and classify sea ice; and track icebergs...
May 2017: IEEE J Sel Top Appl Earth Obs Remote Sens
https://www.readbyqxmd.com/read/28919912/the-isfahan-comprehensive-elderly-study-objectives-research-design-methodology-and-preliminary-results
#20
Zahra Heidari, Awat Feizi
BACKGROUND: This paper presents the objectives, research design, methodology, and primary findings of the Isfahan Comprehensive Elderly Study (ICES). MATERIALS AND METHODS: In this cross-sectional study, 603 elderly persons (aged 60 and over) were selected by multistage cluster sampling method from Isfahan, Iran, in 2016 comprehensive questionnaires along with a detailed interview were used to collect information on personal, family, socioeconomic, health and social services characteristics, life styles, physical illnesses and chronic diseases, mental, emotional and cognition disorders, quality of life, disabilities, sleep quality, social supports, life satisfaction, self-efficacy, and of participants...
2017: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
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