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https://www.readbyqxmd.com/read/29778871/linking-fish-tolerance-to-water-quality-criteria-for-the-assessment-of-environmental-flows-a-practical-method-for-streamflow-regulation-and-pollution-control
#1
Changsen Zhao, Shengtian Yang, Junguo Liu, Changming Liu, Fanghua Hao, Zhonggen Wang, Huitong Zhang, Jinxi Song, Simon M Mitrovic, Richard P Lim
The survival of aquatic biota in stream ecosystems depends on both water quantity and quality, and is particularly susceptible to degraded water quality in regulated rivers. Maintenance of environmental flows (e-flows) for aquatic biota with optimum water quantity and quality is essential for sustainable ecosystem services, especially in developing regions with insufficient stream monitoring of hydrology, water quality and aquatic biota. Few e-flow methods are available that closely link aquatic biota tolerances to pollutant concentrations in a simple and practical manner...
May 15, 2018: Water Research
https://www.readbyqxmd.com/read/29778831/black-plastics-linear-and-circular-economies-hazardous-additives-and-marine-pollution
#2
REVIEW
Andrew Turner
Black products constitute about 15% of the domestic plastic waste stream, of which the majority is single-use packaging and trays for food. This material is not, however, readily recycled owing to the low sensitivity of black pigments to near infrared radiation used in conventional plastic sorting facilities. Accordingly, there is mounting evidence that the demand for black plastics in consumer products is partly met by sourcing material from the plastic housings of end-of-life waste electronic and electrical equipment (WEEE)...
May 17, 2018: Environment International
https://www.readbyqxmd.com/read/29778760/electrochemical-disinfection-of-groundwater-for-civil-use-an-example-of-an-effective-endogenous-advanced-oxidation-process
#3
Achille De Battisti, Paolo Formaglio, Sergio Ferro, Mustafa Al Aukidy, Paola Verlicchi
Lab-scale experiments using real groundwater were carried out using the CabECO® reactor system in order to evaluate its suitability for producing safe water, acceptable for civil purposes. Trials were carried out in discontinuous and in continuous mode, analyzing the influence of electrical and hydraulic process parameters on the quality of treated water. The use of highly boron-doped diamond electrodes in the reactor allowed the electrosynthesis of considerable amounts of ozone. Because of the relatively high amount of chloride in the groundwater samples, a mixture of HOCl/ClO- was also synthesized...
May 12, 2018: Chemosphere
https://www.readbyqxmd.com/read/29778466/in-vitro-susceptibility-of-trypanosoma-brucei-brucei-to-selected-essential-oils-and-their-major-components
#4
Sonya Costa, Cláudia Cavadas, Carlos Cavaleiro, Lígia Salgueiro, Maria do Céu Sousa
Aiming for discovering effective and harmless antitrypanosomal agents, 17 essential oils and nine major components were screened for their effects on T. b. brucei. The essential oils were obtained by hydrodistillation from fresh plant material and analyzed by GC and GC-MS. The trypanocidal activity was assessed using blood stream trypomastigotes cultures of T. b. brucei and the colorimetric resazurin method. The MTT test was used to assess the cytotoxicity of essential oils on macrophage cells and Selectivity Indexes were calculated...
May 17, 2018: Experimental Parasitology
https://www.readbyqxmd.com/read/29778061/syntactic-and-semantic-restrictions-on-morphological-recomposition-meg-evidence-from-greek
#5
K Neophytou, C Manouilidou, L Stockall, A Marantz
Complex morphological processing has been extensively studied in the past decades. However, most of this work has either focused on only certain steps involved in this process, or it has been conducted on a few languages, like English. The purpose of the present study is to investigate the spatiotemporal cortical processing profile of the distinct steps previously reported in the literature, from decomposition to re-composition of morphologically complex items, in a relatively understudied language, Greek. Using magnetoencephalography, we confirm the role of the fusiform gyrus in early, form-based morphological decomposition, we relate the syntactic licensing of stem-suffix combinations to the ventral visual processing stream, somewhat independent from lexical access for the stem, and we further elucidate the role of orbitofrontal regions in semantic composition...
May 16, 2018: Brain and Language
https://www.readbyqxmd.com/read/29778023/the-growth-and-lipid-accumulation-of-scenedesmus-quadricauda-during-batch-mixotrophic-heterotrophic-cultivation-using-xylose-as-a-carbon-source
#6
Mingming Song, Haiyan Pei
To overcome the bottlenecks of high cost and low production yields that restrict the commercial production of microalgae biodiesel, the use of xylose was evaluate by Scenedesmus quadricauda FACHB-1297, which was shown to be capable of mixotrophic and heterotrophic growth and lipid production on xylose, rich in the waste streams from pulp and paper industry, with increases in lipid productivities of 35.8-fold (mixotrophic) and 9.2-fold (heterotrophic) in comparison to photoautotrophic lipid yields. Five doses of xylose were tested to determine the effects and mechanisms of the carbon source on microalgae in mixotrophic mode...
May 10, 2018: Bioresource Technology
https://www.readbyqxmd.com/read/29777853/investigation-of-the-potential-endocrine-effect-of-nitrate-in-zebrafish-danio-rerio-and-brown-trout-salmo-trutta
#7
Poul Bjerregaard, Karin Lund Kinnberg, Maria Pedersen Mose, Henrik Holbech
Nitrate has the potential to affect steroid production. Nitrate concentrations in streams in agricultural areas may exceed concentrations showing effects in laboratory studies. The effects of nitrate and/or nitrite on endocrine relevant endpoints were tested in zebrafish and brown trout. Zebrafish were exposed in two experiments to nitrate (8.8 to 89 mg NO3 - /L) and nitrite (3.6 to 19 mg NO2 - /L) during the period of sexual differentiation and sex ratios were determined. Vitellogenin concentrations were determined in the second experiment...
May 16, 2018: Comparative Biochemistry and Physiology. Toxicology & Pharmacology: CBP
https://www.readbyqxmd.com/read/29777463/considerations-that-will-determine-if-competency-based-assessment-is-a-sustainable-innovation
#8
W Dale Dauphinee, John R Boulet, John J Norcini
Educational assessment for the health professions has seen a major attempt to introduce competency based frameworks. As high level policy developments, the changes were intended to improve outcomes by supporting learning and skills development. However, we argue that previous experiences with major innovations in assessment offer an important road map for developing and refining assessment innovations, including careful piloting and analyses of their measurement qualities and impacts. Based on the literature, numerous assessment workshops, personal interactions with potential users, and our 40 years of experience in implementing assessment change, we lament the lack of a coordinated approach to clarify and improve measurement qualities and functionality of competency based assessment (CBA)...
May 18, 2018: Advances in Health Sciences Education: Theory and Practice
https://www.readbyqxmd.com/read/29777411/spatial-environmental-risk-evaluation-of-potential-toxic-elements-in-stream-sediments
#9
I M H R Antunes, M T D Albuquerque, N Roque
Potential toxic elements (PTE), in stream sediments, were used as contamination indicators for the definition of high-/low-grade spatial clusters in the Monfortinho area (Central Portugal). A set of 271 stream sediment samples was used for spatial modelling and further definition of rings of enrichment-high and low rings. A three-step multivariate statistical and geostatistical approach was used: (1) principal components analysis for PTE's association evaluation and dimensionality reduction; (2) ordinary kriging as an unbiased interpolator for content inference and construction of a continuous representation of the considered attributes, at any arbitrary spatial location; (3) G clustering algorithm for the definition of high and low significance clusters...
May 18, 2018: Environmental Geochemistry and Health
https://www.readbyqxmd.com/read/29777164/mrna-treatment-produces-sustained-expression-of-enzymatically-active-human-adamts13-in-mice
#10
Susan Liu-Chen, Brendan Connolly, Lei Cheng, Romesh R Subramanian, Zhaozhong Han
Thrombotic thrombocytopenic purpura (TTP) is primarily caused by deficiency of ADAMTS13 within the blood stream due to either genetic defects or presence of inhibitory autoantibodies. Preclinical and clinical studies suggest that enzyme replacement therapy with recombinant human ADAMTS13 protein (rhADAMTS13) is effective and safe in treatment of TTP. However, frequent dosing would be required due to the relatively short half-life of rhADAMTS13 in circulation as well as the presence of inhibitory autoantibodies that collectively result in the poor pharmacological profile of rhADAMTS13...
May 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29777141/quantum-optically-enhanced-storm-quest-for-multi-emitter-localization
#11
Marc Aßmann
Super-resolution imaging has introduced new capabilities to investigate processes at the nanometer scale by optical means. However, most super-resolution techniques require either sparse excitation of few emitters or analysis of high-order cumulants in order to identify several emitters in close vicinity. Here, we present an approach that draws upon methods from quantum optics to perform localization super-resolution imaging of densely packed emitters and determine their number automatically: Quantum-optically enhanced STORM (QUEST)...
May 18, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29776785/active-school-travel-intervention-methodologies-in-north-america-a-systematic-review
#12
REVIEW
Adrian N Buttazzoni, Emily S Van Kesteren, Tayyab I Shah, Jason A Gilliland
CONTEXT: As children's lifestyles have become increasingly sedentary, active school travel can be a relatively accessible way to increase their daily physical activity. In recent years, several different models of interventions have been utilized to promote children participating in active school travel. This review documents and analyzes the different active school travel intervention methodologies that have been used in North America (Canada or U.S.) by collecting, organizing, and evaluating data relating to all phases of active school travel interventions...
May 15, 2018: American Journal of Preventive Medicine
https://www.readbyqxmd.com/read/29775301/enantioselective-synthesis-of-anti-1-2-diamines-by-cu-catalyzed-reductive-couplings-of-azadienes-with-aldimines-and-ketimines
#13
Xinxin Shao, Kangnan Li, Steven J Malcolmson
Here we report highly efficient and chemoselective azadiene-imine reductive couplings catalyzed by (Ph-BPE)Cu-H that afford anti-1,2-diamines. In all cases, reactions take place with either aldimine or ketimine electrophiles to deliver a single diastereomer of product in >95:5 er. The products' diamines are easily differentiable, facilitating down-stream synthesis.
May 18, 2018: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/29772215/a-new-species-and-a-new-record-of-the-simulium-gomphostilbia-gombakense-species-group-diptera-simuliidae-from-thailand
#14
Hiroyuki Takaoka, Wichai Srisuka, Van Lun Low, Atiporn Saeung
Larvae and adults reared from pupae of Simulium (Gomphostilbia) gombakense Takaoka & Davies from eight streams in five provinces of Thailand were genetically analyzed by using cytochrome c oxidase subunit 1 sequences. The material was composed of four lineages, of which lineages 2, 3 and 4 are genetically closely related to one another, but more distantly related to lineage 1, which is equivalent to typical S. (G.) gombakense from Peninsular Malaysia. Lineages 2, 3 and 4, which are morphologically indistinguishable, are designated as genoforms A, B and C within a species complex of S...
May 14, 2018: Acta Tropica
https://www.readbyqxmd.com/read/29771359/neural-bases-of-social-communicative-intentions-in-speech
#15
Nele Hellbernd, Daniela Sammler
Our ability to understand others' communicative intentions in speech is key to successful social interaction. Indeed, misunderstanding an "excuse me" as apology, while meant as criticism, may have important consequences. Recent behavioural studies have provided evidence that prosody, i.e., vocal tone, is an important indicator for speakers' intentions. Using a novel audio-morphing paradigm, the present fMRI study examined the neurocognitive mechanisms that allow listeners to 'read' speakers' intents from vocal-prosodic patterns...
May 16, 2018: Social Cognitive and Affective Neuroscience
https://www.readbyqxmd.com/read/29770256/network-inference-via-the-time-varying-graphical-lasso
#16
David Hallac, Youngsuk Park, Stephen Boyd, Jure Leskovec
Many important problems can be modeled as a system of interconnected entities, where each entity is recording time-dependent observations or measurements. In order to spot trends, detect anomalies, and interpret the temporal dynamics of such data, it is essential to understand the relationships between the different entities and how these relationships evolve over time. In this paper, we introduce the time-varying graphical lasso (TVGL) , a method of inferring time-varying networks from raw time series data...
August 2017: KDD: Proceedings
https://www.readbyqxmd.com/read/29770191/electrolytically-generated-hydrogen-warm-water-cleanses-the-keratin-plug-clogged-hair-pores-and-promotes-the-capillary-blood-streams-more-markedly-than-normal-warm-water-does
#17
Yoshiharu Tanaka, Yasukazu Saitoh, Nobuhiko Miwa
Biomedical properties of hydrogen water have been extensively investigated, but the effect of hydrogen on good healthy subjects remains unclear. This study was designed to explore the hygiene improvement by electrolytically generated hydrogen warm water (40°C) on capillary blood streams, skin moisture, and keratin plugs in skin pores in normal good healthy subjects with their informed consents. Fingertip-capillary blood stream was estimated after hand-immersing in hydrogen warm water by videography using a CCD-based microscope, and the blood flow levels increased to about 120% versus normal warm water, after 60 minutes of the hand-immersing termination...
January 2018: Medical Gas Research
https://www.readbyqxmd.com/read/29768805/an-isomorphously-substituted-fe-bea-zeolite-with-high-fe-content-facile-synthesis-and-characterization
#18
Yusuke Naraki, Ko Ariga, Hideyuki Oka, Hirokazu Kurashige, Tsuneji Sano
An isomorphously substituted Al-free Fe-BEA zeolite with extremely high Fe content (~7 wt.%) was synthesized by a facile and industrially friendly method using an excess amount of NaOH. The obtained Fe-BEA zeolite was highly crystalline and showed a well-facetted bipyramidal morphology, similarly to beta zeolites synthesized in a fluoride medium. The chemical states of Fe in the above zeolite were investigated by diffuse reflectance ultraviolet-visible (UV-Vis) absorption spectroscopy, electron paramagnetic resonance (EPR) spectroscopy, and X-ray absorption fine structure (XAFS) spectroscopy...
January 1, 2018: Journal of Nanoscience and Nanotechnology
https://www.readbyqxmd.com/read/29768131/a-new-scoring-system-to-predict-blood-stream-infections-in-patients-with-complicated-intra-abdominal-infections-experience-from-a-tertiary-referral-hospital-in-china
#19
Jinjian Huang, Jianan Ren, Luise Brakert, Jiao Jiao, Qinjie Liu, Gefei Wang, Xiuwen Wu, Steven W M Olde Damink
BACKGROUND: This purpose of this study was to investigate the effects of blood stream infections (BSIs) on the prognosis of patients with complicated intra-abdominal infections (IAIs) and to make predictions based on patients' characteristics on admission. PATIENTS AND METHODS: One hundred eighty-seven patients with complicated IAI in 2014 and 2015 were included in our retrospective analysis, except for those diagnosed with central line-associated blood stream infections (CLABSIs)...
May 2018: Surgical Infections
https://www.readbyqxmd.com/read/29767710/relationship-between-dissolved-organic-matter-quality-and-microbial-community-composition-across-polar-glacial-environments
#20
H J Smith, M Dieser, D M McKnight, M D SanClements, C M Foreman
Vast expanses of Earth's surface are covered by ice, with microorganisms in these systems affecting local and global biogeochemical cycles. We examined microbial assemblages from habitats fed by glacial meltwater within the McMurdo Dry Valleys, Antarctica, and on the west Greenland Ice Sheet, (GrIS) evaluating potential physicochemical factors explaining trends in community structure. Microbial assemblages present in the different Antarctic dry valley habitats were dominated by Sphingobacteria and Flavobacteria, while Gammaproteobacteria and Sphingobacteria prevailed in west GrIS supraglacial environments...
May 14, 2018: FEMS Microbiology Ecology
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