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https://www.readbyqxmd.com/read/29150799/a-hybrid-approach-based-on-logistic-classification-and-iterative-contrast-enhancement-algorithm-for-hyperintense-multiple-sclerosis-lesion-segmentation
#1
Antonio Carlos da Silva Senra Filho
Multiple sclerosis (MS) is a neurodegenerative disease with increasing importance in recent years, in which the T2 weighted with fluid attenuation inversion recovery (FLAIR) MRI imaging technique has been addressed for the hyperintense MS lesion assessment. Many automatic lesion segmentation approaches have been proposed in the literature in order to assist health professionals. In this study, a new hybrid lesion segmentation approach based on logistic classification (LC) and the iterative contrast enhancement (ICE) method is proposed (LC+ICE)...
November 18, 2017: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/29149910/sodium-chloride-pica-causing-recurrent-nephrolithiasis-in-a-patient-with-iron-deficiency-anemia-a-case-report
#2
Brittany Rogers, Joshua Kramer, Stephanie Smith, Vincent Bird, Eric I Rosenberg
BACKGROUND: Iron deficiency anemia is a common finding in women of child-bearing age. Pica, or the ingestion of non-food or non-nutritive items, is a well-known manifestation of iron deficiency. A high sodium diet increases risk for nephrolithiasis. We describe the case of a 31-year-old woman with recurrent calcium nephrolithiasis and anemia who ate ice chips as well as spoons of salt daily. Treatment of pica may prove effective in preventing recurrent nephrolithiasis. CASE PRESENTATION: A 31-year-old white woman with a past medical history of menorrhagia, anemia, and recurrent calcium nephrolithiasis presented for preoperative evaluation prior to ureterolithotomy...
November 18, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/29149492/effects-of-tao-hong-si-wu-decoction-on-acute-blood-stasis-in-rats-based-on-a-lc-q-tof-ms-metabolomics-and-network-approach
#3
Qi Ma, Peng-Ling Li, Yong-Li Hua, Peng Ji, Wan-Ling Yao, Xiao-Song Zhang, Li-Jia Zhong, Yan-Ming Wei
A novel approach using metabolomics coupled with a metabolic network was used to investigate the effects of THSWD on the rat model of acute blood stasis syndrome. Acute blood stasis syndrome was induced by placing the rats in ice-cold water following two injections with epinephrine. The hemorheological indicators (WBV and PV), and the blood coagulation indicators (TT, PT, APTT, and FIB) were detected. The nonparametric univariate method and multivariate statistical analysis were performed for determining the potential biomarkers...
November 17, 2017: Biomedical Chromatography: BMC
https://www.readbyqxmd.com/read/29149236/mutations-affecting-glycinergic-neurotransmission-in-hyperekplexia-increase-pain-sensitivity
#4
Pascal Henri Vuilleumier, Raphael Fritsche, Jürg Schliessbach, Bernhard Schmitt, Lars Arendt-Nielsen, Hanns Ulrich Zeilhofer, Michele Curatolo
Inhibitory interneurons in the spinal cord use glycine and GABA for fast inhibitory neurotransmission. While there is abundant research on these inhibitory pain pathways in animal models, their relevance in humans remains unclear, largely due to the limited possibility to manipulate selectively these pathways in humans. Hyperekplexia is a rare human disease that is caused by loss-of-function mutations in genes encoding for glycine receptors and glycine transporters. In the present study, we tested whether hyperekplexia patients display altered pain perception or central pain modulation compared with healthy subjects...
November 15, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/29148724/photooxidation-of-aniline-derivatives-can-be-activated-by-freezing-their-aqueous-solutions
#5
Pablo Corrochano, Dana Nachtigallová, Petr Klán
A combined experimental and computational approach was used to investigate the spectroscopic properties of three different aniline derivatives (aniline, N,N-dimethylaniline, and N,N-diethylaniline) in aqueous solutions and at the air-ice interface in the temperature range of 243-298 K. The absorption and diffuse reflectance spectra of ice samples prepared by different techniques, such as slow or shock freezing of the aqueous solutions or vapor deposition on ice grains, exhibited unequivocal bathochromic shifts of 10-15 nm of the absorption maxima of anilines in frozen samples compared to those in liquid aqueous solutions...
November 17, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/29147825/ice-squeezing-induced-multicolor-fluorescence-emissions-from-polyacrylamide-cryogels
#6
Chun Yang, Yan Zhang, Wei-Qin Cao, Ya-Nan Yan, Jian Wang, Xiao-Feng Ji, Tao-Lin Zhong, Yu Wang
Being short of conventional chromophores, polyacrylamide is generally not regarded as a fluorescent material. Exactly the polymerization of dilute solutions of acrylamide and N,N'-methylenebisacrylamide led to thick liquids at 60 °C, showing no fluorescence. Things changed when the phase transition of water was involved. The squeezing effect of ice crystals not only created polymeric solids (cryogels) at - 20 °C, but also endowed them unexpected fluorescence emissions. The macroporous cryogels are mainly blue fluorescent polymers...
November 16, 2017: Journal of Fluorescence
https://www.readbyqxmd.com/read/29145365/ice-under-siege
#7
(no author information available yet)
No abstract text is available yet for this article.
November 14, 2017: Scientific American
https://www.readbyqxmd.com/read/29145288/efficacy-of-cold-application-on-pain-during-chest-tube-removal-a-randomized-controlled-trial-a-consort-compliant-article
#8
Ling-Yu Hsieh, Yi-Rong Chen, Mei-Chun Lu
BACKGROUND: Use of analgesics is the most common method to alleviate the pain induced by chest tube removal (CTR), but patient response to medication can vary and may not be achieved complete relaxation. This study was to determine the effectiveness of cold application in combination with standard analgesic administration before CTR on CTR-induced pain. METHODS: A prospective, randomized, single-blind, sham-controlled study was conducted. In addition to the same routine care, subjects in the experimental group (n = 30) received cold application of 600-g ice packs 15 minutes before CTR, whereas subjects in the sham group (n = 30) received tap water packs...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29145101/the-distribution-and-trends-of-persistent-organic-pollutants-and-mercury-in-marine-mammals-from-canada-s-eastern-arctic
#9
REVIEW
Tanya M Brown, Robie W Macdonald, Derek C G Muir, Robert J Letcher
Arctic contaminant research in the marine environment has focused on organohalogen compounds and mercury mainly because they are bioaccumulative, persistent and toxic. This review summarizes and discusses the patterns and trends of persistent organic pollutants (POPs) and mercury in ringed seals (Pusa hispida) and polar bears (Ursus maritimus) in the Eastern Canadian Arctic relative to the rest of the Canadian Arctic. The review provides explanations for these trends and looks at the implications of climate-related changes on contaminants in these marine mammals in a region that has been reviewed little...
November 13, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29144595/evaluation-of-405-nm-monochromatic-light-for-inactivation-of-tulane-virus-on-blueberry-surfaces
#10
David Kingsley, Rafael E Perez-Perez, Glenn Boyd, Joseph Sites, Brendan A Niemira
AIM: The study aim was to evaluate the potential of 405 nm light as a virus intervention for blueberries. METHODS AND RESULTS: Tulane virus-inoculated-blueberries were treated with 4.2 mW/sq cm of 405 nm light for 5 to 30 min. To mitigate thermal heating due to the intense light, a dry ice-chilled nitrogen-based cooling system was utilized. Blueberries were rotated to ensure exposure of all surfaces to 405 light. Five, 10, and 30 min treatments resulted in little or no inactivation of Tulane virus on blueberries (average log reductions of -0...
November 16, 2017: Journal of Applied Microbiology
https://www.readbyqxmd.com/read/29143490/rock-glaciers-in-crystalline-catchments-hidden-permafrost-related-threats-to-alpine-headwater-lakes
#11
Boris P Ilyashuk, Elena A Ilyashuk, Roland Psenner, Richard Tessadri, Karin A Koinig
A global warming-induced transition from glacial to periglacial processes has been identified in mountainous regions around the world. Degrading permafrost in pristine periglacial environments can produce acid rock drainage (ARD) and cause severe ecological damage in areas underlain by sulfide-bearing bedrock. Limnological and paleolimnological approaches were used to assess and compare ARDs generated by rock glaciers, a typical landform of the mountain permafrost domain, and their effects on alpine headwater lakes with similar morphometric features and underlying bedrock geology, but characterized by different intensities of frost action in their catchments during the year...
November 15, 2017: Global Change Biology
https://www.readbyqxmd.com/read/29143150/the-impact-of-sea-ice-conditions-on-breeding-decisions-is-modulated-by-body-condition-in-an-arctic-partial-capital-breeder
#12
Frankie Jean-Gagnon, P Legagneux, G Gilchrist, S Bélanger, O P Love, J Bêty
Determining how environmental conditions interact with individual intrinsic properties is important for unravelling the underlying mechanisms that drive variation in reproductive decisions among migratory species. We investigated the influence of sea ice conditions and body condition at arrival on the breeding propensity, i.e. the decision to reproduce or not within a single breeding season, and timing of laying in migrating common eiders (Somateria mollissima) breeding in the Arctic. Using Radarsat satellite images acquired from 2002 to 2013, we estimated the proportion of open water in the intertidal zone in early summer to track the availability of potential foraging areas for pre-breeding females...
November 15, 2017: Oecologia
https://www.readbyqxmd.com/read/29142216/polymer-mimics-of-biomacromolecular-antifreezes
#13
REVIEW
Caroline I Biggs, Trisha L Bailey, Ben Graham, Christopher Stubbs, Alice Fayter, Matthew I Gibson
Antifreeze proteins from polar fish species are remarkable biomacromolecules which prevent the growth of ice crystals. Ice crystal growth is a major problem in cell/tissue cryopreservation for transplantation, transfusion and basic biomedical research, as well as technological applications such as icing of aircraft wings. This review will introduce the rapidly emerging field of synthetic macromolecular (polymer) mimics of antifreeze proteins. Particular focus is placed on designing polymers which have no structural similarities to antifreeze proteins but reproduce the same macroscopic properties, potentially by different molecular-level mechanisms...
November 16, 2017: Nature Communications
https://www.readbyqxmd.com/read/29140678/robust-superhydrophobic-carbon-nanotube-film-with-lotus-leaf-mimetic-multiscale-hierarchical-structures
#14
Pengwei Wang, Tianyi Zhao, Ruixin Bian, Guangyan Wang, Huan Liu
Superhydrophobic carbon nanotube (CNT) films have demonstrated many fascinating performances in versatile applications, especially for those involving solid/liquid interfacial processes, because of their ability to affect the material/energy transfer at interfaces. Thus, developing superhydrophobic CNTs has attracted extensive research interests in the past decades, and it could be achieved either by surface coating of low-free energy materials or by constructing micro/nanohierarchical structures via various complicated processes...
November 17, 2017: ACS Nano
https://www.readbyqxmd.com/read/29140398/legacy-organochlorine-pollutants-in-glacial-watersheds-a-review
#15
K R Miner, J Blais, C Bogdal, S Villa, M Schwikowski, P Pavlova, C Steinlin, C Gerbi, K J Kreutz
Northern Hemisphere alpine glaciers have been identified as a point of concentration and reemergence of legacy organochlorine pollutants (OCPs). In this review, we compile a selection of published literature combining long-range, global atmospheric transport and distribution-based compartmental environmental flux models, as well as data from glacial meltwater, ice core, crevasse and proglacial lake sediment studies. Regional studies of ice and meltwater in alpine glaciers of the northern latitudes show similarities in sample deposition profiles and concentration due to chemical atmospheric residence time, precipitation type and glacier flow rates...
November 15, 2017: Environmental Science. Processes & Impacts
https://www.readbyqxmd.com/read/29139545/the-effect-of-ice-crystals-formations-on-the-flesh-quality-of-frozen-horse-mackerel-trachurus-japonicus
#16
Yao Wang, Riho Miyazaki, Shinobu Saitou, Katsuya Hirasaka, Satoshi Takeshita, Katsuyasu Tachibana, Shigeto Taniyama
It is known that the formation of ice crystals has a negative impact on the flesh quality of frozen meat. This study focuses on how the formation of ice crystals in the dorsal ordinary muscle affects the flesh quality of frozen horse mackerel (Trachurus japonicus). Freeze-thawed muscle specimens (F-TMS) of horse mackerel were first stored at -24°C and then thawed. The K-value, expressible water, breaking strength of unfrozen muscle specimens (UMS) and F-TMS, and histological structure (light microscope: LM, scanning electron microscope: SEM) of UMS, frozen muscle specimens (FMS) and F-TMS were investigated...
November 15, 2017: Journal of Texture Studies
https://www.readbyqxmd.com/read/29139499/the-role-of-phase-separation-and-related-topography-in-the-exceptional-ice-nucleating-ability-of-alkali-feldspars
#17
Thomas F Whale, Mark A Holden, Alexander N Kulak, Yi-Yeoun Kim, Fiona C Meldrum, Hugo K Christenson, Benjamin J Murray
Our understanding of crystal nucleation is a limiting factor in many fields, not least in the atmospheric sciences. It was recently found that feldspar, a component of airborne desert dust, plays a dominant role in triggering ice formation in clouds, but the origin of this effect was unclear. By investigating the structure/property relationships of a wide range of feldspars, we demonstrate that alkali feldspars with certain microtextures, related to phase separation into Na and K-rich regions, show exceptional ice-nucleating abilities in supercooled water...
November 15, 2017: Physical Chemistry Chemical Physics: PCCP
https://www.readbyqxmd.com/read/29139273/-comparative-study-on-promoting-blood-effects-of-danshen-honghua-herb-pair-with-different-preparations-based-on-chemometrics-and-multi-attribute-comprehensive-index-methods
#18
Cheng Qu, Yu-Ping Tang, Xu-Qin Shi, Gui-Sheng Zhou, Er-Xin Shang, Li-Li Shang, Jian-Ming Guo, Pei Liu, Jing Zhao, Bu-Chang Zhao, Jin-Ao Duan
To evaluate the promoting blood circulation and removing blood stasis effects of Danshen-Honghua(DH) herb pair with different preparations (alcohol, 50% alcohol and water) on blood rheology and coagulation functions in acute blood stasis rats, and optimize the best preparation method of DH based on principal component analysis(PCA), hierarchical cluster heatmap analysis and multi-attribute comprehensive index methods. Ice water bath and subcutaneous injection of adrenaline were both used to establish the acute blood stasis rat model...
August 2017: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica
https://www.readbyqxmd.com/read/29138983/cloning-expression-analysis-and-enzyme-activity-assays-of-the-%C3%AE-carbonic-anhydrase-gene-from-chlamydomonas-sp-ice-l
#19
Changfeng Qu, Yingying He, Zhou Zheng, Meiling An, Lulu Li, Xixi Wang, Xiaodong He, Yibin Wang, Fangming Liu, Jinlai Miao
The α-carbonic anhydrase (α-CA) is a zinc ion-containing enzyme that catalyzes the hydration of carbon dioxide. In this paper, a full-length α-CA gene was cloned from Chlamydomonas sp. ICE-L using RT-PCR and RACE-PCR for bioinformatic analysis. The α-CA open reading frame obtained by PCR was cloned into a vector and transformed into Escherichia coli to generate α-CA-producing bacteria. The α-CA was highly expressed upon induction with isopropyl-β-d-thiogalactoside (IPTG) at a final concentration of 0...
November 14, 2017: Molecular Biotechnology
https://www.readbyqxmd.com/read/29137985/the-effect-of-surface-charge-on-the-thermal-stability-and-ice-recrystallization-inhibition-activity-of-antifreeze-protein-iii-afp-iii
#20
R C Deller, B M Carter, I Zampetakis, F Scarpa, A W Perriman
The aim of this study was to examine the effect of chemical cationization on the structure and function of antifreeze protein III (AFP III) over an extreme temperature range (-40 °C to +90 °C) using far-UV synchrotron radiation circular dichroism (SRCD) and ice recrystallization inhibition (IRI) assays. Chemical cationization was able to produce a modified AFP III with a net cationic charge at physiological pH that had enhanced resistance to denaturation at elevated temperatures, with no immediate negative impact on protein structure at subzero temperatures...
November 11, 2017: Biochemical and Biophysical Research Communications
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