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https://www.readbyqxmd.com/read/28095993/evaluation-of-the-short-term-fate-and-transport-of-chemicals-of-emerging-concern-during-soil-aquifer-treatment-using-select-transformation-products-as-intrinsic-redox-sensitive-tracers
#1
Meriam Muntau, Manoj Schulz, Kevin S Jewell, Nina Hermes, Uwe Hübner, Thomas Ternes, Jörg E Drewes
In this study, known products from oxic transformation of the X-ray contrast medium iopromide were introduced for the first time as intrinsic tracer for in situ characterization of the transition zone between oxic and suboxic conditions during the initial phase of soil-aquifer treatment (SAT). Two wet-dry cycles of a full-scale infiltration basin were monitored to characterize hydraulic retention times, redox conditions, removal of bulk organic parameters and the fate of chemicals of emerging concern (CECs)...
January 14, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28078333/topography-guided-buckling-of-swollen-polymer-bilayer-films-into-three-dimensional-structures
#2
Joonwoo Jeong, Yigil Cho, Su Yeon Lee, Xingting Gong, Randall D Kamien, Shu Yang, A G Yodh
Thin films that exhibit spatially heterogeneous swelling often buckle into the third dimension to minimize stress. These effects, in turn, offer a promising strategy to fabricate complex three-dimensional structures from two-dimensional sheets. Here we employ surface topography as a new means to guide buckling of swollen polymer bilayer films and thereby control the morphology of resulting three-dimensional objects. Topographic patterns are created on poly(dimethylsiloxane) (PDMS) films selectively coated with a thin layer of non-swelling parylene on different sides of the patterned films...
January 12, 2017: Soft Matter
https://www.readbyqxmd.com/read/28048404/we-h-201-03-enthusiasm-and-generosity-of-spirit-necessitate-a-volunteering-structure-to-make-them-more-meaningful
#3
Y Pipman
: The desperate need for radiotherapy in low and mid-income countries (LMICs) has been well documented. Roughly 60 % of the worldwide incidence of cancer occurs in these resource-limited settings and the international community alongside governmental and non-profit agencies have begun publishing reports and seeking help from qualified volunteers. However, the focus of several reports has been on how dire the situation is and the magnitude of the problem, leaving most to feel overwhelmed and unsure as to how to help and why to get involved...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047760/we-h-201-04-models-for-developing-medical-physics-educators-and-education-programs-in-the-developing-countries-and-the-potential-role-of-us-universities-and-individual-medical-physicists
#4
P Sprawls
: The desperate need for radiotherapy in low and mid-income countries (LMICs) has been well documented. Roughly 60 % of the worldwide incidence of cancer occurs in these resource-limited settings and the international community alongside governmental and non-profit agencies have begun publishing reports and seeking help from qualified volunteers. However, the focus of several reports has been on how dire the situation is and the magnitude of the problem, leaving most to feel overwhelmed and unsure as to how to help and why to get involved...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28047637/we-h-201-00-opportunities-for-physicists-to-support-low-and-mid-income-countries
#5
Julianne Pollard
: The desperate need for radiotherapy in low and mid-income countries (LMICs) has been well documented. Roughly 60 % of the worldwide incidence of cancer occurs in these resource-limited settings and the international community alongside governmental and non-profit agencies have begun publishing reports and seeking help from qualified volunteers. However, the focus of several reports has been on how dire the situation is and the magnitude of the problem, leaving most to feel overwhelmed and unsure as to how to help and why to get involved...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046986/we-h-201-01-the-opportunities-and-benefits-of-helping-lmics-how-helping-them-can-help-you
#6
J Pollard
: The desperate need for radiotherapy in low and mid-income countries (LMICs) has been well documented. Roughly 60 % of the worldwide incidence of cancer occurs in these resource-limited settings and the international community alongside governmental and non-profit agencies have begun publishing reports and seeking help from qualified volunteers. However, the focus of several reports has been on how dire the situation is and the magnitude of the problem, leaving most to feel overwhelmed and unsure as to how to help and why to get involved...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28046328/we-h-201-02-emerging-models-and-opportunities-in-global-health-for-medical-physicists-powered-by-information-and-communication-technologies
#7
W Ngwa
: The desperate need for radiotherapy in low and mid-income countries (LMICs) has been well documented. Roughly 60 % of the worldwide incidence of cancer occurs in these resource-limited settings and the international community alongside governmental and non-profit agencies have begun publishing reports and seeking help from qualified volunteers. However, the focus of several reports has been on how dire the situation is and the magnitude of the problem, leaving most to feel overwhelmed and unsure as to how to help and why to get involved...
June 2016: Medical Physics
https://www.readbyqxmd.com/read/28043001/flow-cytometry-for-immediate-follow-up-of-drinking-water-networks-after-maintenance
#8
Sam Van Nevel, Benjamin Buysschaert, Karen De Roy, Bart De Gusseme, Lieven Clement, Nico Boon
Drinking water networks need maintenance every once in a while, either planned interventions or emergency repairs. When this involves opening of the water pipes, precautionary measures need to be taken to avoid contamination of the drinking water at all time. Drinking water suppliers routinely apply plating for faecal indicator organisms as quality control in such a situation. However, this takes at least 21 h of waiting time, which can be crucial when dealing with major supply pipes. A combination of flow cytometric (FCM) bacterial cell counts with FCM fingerprinting techniques is proposed in this study as a fast and sensitive additional technique...
December 25, 2016: Water Research
https://www.readbyqxmd.com/read/28040052/examination-of-the-reflection-properties-of-sloping-terminations-to-organ-pipes
#9
Péter Rucz, Kai Dolde, Wei Kuang, Judit Angster, András Miklós
The sound characteristics of both labial and lingual organ pipes are affected to a great extent by the reflection properties of the resonators. In this paper, the reflection properties of sloped pipe terminations are examined and the possible applications in organ building practice are investigated. Sloped shallots of reed organ pipes with different termination angles are of particular interest in this study. For the examination of the reflection properties two different approaches are applied. Sound pulse reflection measurements on model geometries provide experimental data in the time domain, while finite element simulations yield reflection coefficients in the frequency domain...
December 2016: Journal of the Acoustical Society of America
https://www.readbyqxmd.com/read/27998057/spatial-models-of-sewer-pipe-leakage-predict-the-occurrence-of-wastewater-indicators-in-shallow-urban-groundwater
#10
Patrick R Roehrdanz, Marina Feraud, Do Gyun Lee, Jay C Means, Shane A Snyder, Patricia A Holden
Twentieth century municipal wastewater infrastructure greatly improved U.S. urban public health and water quality. However, sewer pipes deteriorate and their accumulated structural defects may release untreated wastewater to the environment via acute breaks or insidious exfiltration. Exfiltrated wastewater constitutes a loss of potentially reusable water and delivers a complex and variable mix of contaminants to urban shallow groundwater. Yet, predicting where deteriorated sewers impinge on shallow groundwater has been challenging...
December 20, 2016: Environmental Science & Technology
https://www.readbyqxmd.com/read/27938247/estimating-diesel-fuel-exposure-for-a-plumber-repairing-an-underground-pipe
#11
Mary Finn, Mark Stenzel, Gurumurthy Ramachandran
We estimated the diesel fuel exposure of a plumber repairing an underground water line leak at a truck stop. The repair work was performed over three days during which the plumber spent most of his time in a pit filled with a mixture of water and diesel fuel. Thus, the plumber was exposed via both the inhalation and dermal routes. While previously asymptomatic, he was diagnosed with acute renal failure 35 days after working at this site. No measurements were available for estimating either inhalation or dermal exposures or the cumulative dose and, therefore, two different approaches were used that were based on simple models of the exposure scenario...
December 12, 2016: Journal of Occupational and Environmental Hygiene
https://www.readbyqxmd.com/read/27914290/the-interaction-of-surfactants-with-plastic-and-copper-plumbing-materials-during-decontamination
#12
Karen S Casteloes, Gamini P Mendis, Holly K Avins, John A Howarter, Andrew J Whelton
The study goal was to examine the effectiveness of surfactants to decontaminate plastic and copper potable water plumbing components. Several common potable water pipe and gasket plastics were examined as well as Alconox(®) detergent, Dawn(®) soap, and MAGIT-DG 100 surfactants. Results showed that the MAGIT-DG 100 solutions permeated all plastics within 3days, effectively compromising tensile strength (-82%), physical dimension (+43% volume, +45% weight), and oxidative resistance (-15%). A variety of MAGIT-DG 100 solution compounds permeated plastic samples, not just the declared major ingredient...
March 5, 2017: Journal of Hazardous Materials
https://www.readbyqxmd.com/read/27897428/functionalization-of-polypyrrole-nano-pipes-with-redox-active-polyoxometalates-poms-for-ultrahigh-energy-density-supercapacitors
#13
Deepak Dubal, Belén Ballesteros, Ashwini Mohite, Pedro Gomez-Romero
Hybrid materials are prominent role-models for the fabrication of high performance supercapacitors. Here, we have explored organic-inorganic hybrid materials based on open-end porous 1D polypyrrole nano-pipes (PPy-NPipes) and heteropolyoxometalate (phosphotungstate ([PW12O40]3- (PW12) or phosphomolybdate [PMo12O40]3- (PMo12)) that display excellent areal capacitances. Two different hybrid materials (PMo12@PPy and PW12@PPy) were effectively synthesized and applied for symmetric supercapacitors. The anchoring of the inorganic nanoclusters onto the conducting polymer nanopipes led indeed to electrodes which stood up to our best expectations exhibiting outstanding areal capacitances which are almost 1...
November 29, 2016: ChemSusChem
https://www.readbyqxmd.com/read/27883920/nano-exploration-of-organic-conditioning-film-formed-on-polymeric-surfaces-exposed-to-drinking-water
#14
Grégory Francius, Racha El Zein, Laurence Mathieu, Florence Gosselin, Armand Maul, Jean-Claude Block
Adsorption of organic macromolecules onto surfaces in contact with waters forms a so-called conditioning film and induces modifications of the surface properties. Here, we characterized conditioning films formed onto two hydrophobic materials (used as pipe liner) and immersed for 24 h in tap water. Using combination of atomic force microscopy (AFM), and chemical force microscopy (CFM), we detected some changes in roughness and hydrophilic/hydrophobic balance of the surface of the tested coupons, and also the deposition of numerous organic polymers (few millions/cm(2)) randomly distributed on the surface...
February 1, 2017: Water Research
https://www.readbyqxmd.com/read/27872163/role-of-autophagy-in-cadmium-induced-testicular-injury
#15
Y-J Wang, J Yan, F Yin, L Li, Y-G Qin, C-Y Meng, R-F Lu, L Guo
The testis is sensitive to cadmium, but studies investigating cadmium-induced testicular injury have not yet clearly revealed the underlying mechanisms. This study aimed to investigate the injurious effects of cadmium on rat testes and the role that autophagy plays in this process. Wistar rats were randomly divided into four groups and intraperitoneally injected with 0.2 (low), 0.4 (middle), and 0.8 mg/kg·body weight (high) cadmium chloride for 5 weeks, while the control rats were injected with equal volume of saline...
November 21, 2016: Human & Experimental Toxicology
https://www.readbyqxmd.com/read/27866895/empty-niches-after-extinctions-increase-population-sizes-of-modern-corals
#16
Carlos Prada, Bishoy Hanna, Ann F Budd, Cheryl M Woodley, Jeremy Schmutz, Jane Grimwood, Roberto Iglesias-Prieto, John M Pandolfi, Don Levitan, Kenneth G Johnson, Nancy Knowlton, Hiroaki Kitano, Michael DeGiorgio, Mónica Medina
Large environmental fluctuations often cause mass extinctions, extirpating species and transforming communities [1, 2]. While the effects on community structure are evident in the fossil record, demographic consequences for populations of individual species are harder to evaluate because fossils reveal relative, but not absolute, abundances. However, genomic analyses of living species that have survived a mass extinction event offer the potential for understanding the demographic effects of such environmental fluctuations on extant species...
December 5, 2016: Current Biology: CB
https://www.readbyqxmd.com/read/27857210/managing-peatland-vegetation-for-drinking-water-treatment
#17
Jonathan P Ritson, Michael Bell, Richard E Brazier, Emilie Grand-Clement, Nigel J D Graham, Chris Freeman, David Smith, Michael R Templeton, Joanna M Clark
Peatland ecosystem services include drinking water provision, flood mitigation, habitat provision and carbon sequestration. Dissolved organic carbon (DOC) removal is a key treatment process for the supply of potable water downstream from peat-dominated catchments. A transition from peat-forming Sphagnum moss to vascular plants has been observed in peatlands degraded by (a) land management, (b) atmospheric deposition and (c) climate change. Here within we show that the presence of vascular plants with higher annual above-ground biomass production leads to a seasonal addition of labile plant material into the peatland ecosystem as litter recalcitrance is lower...
November 18, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27845574/-we-smoke-the-same-pipe-religion-and-community-home-based-care-for-plwh-in-rural-swaziland
#18
Robin Root, Arnau Van Wyngaard, Alan Whiteside
We draw on a study of a church-run community home-based care organization in Swaziland to explore how individuals living with HIV perceived caregivers' impact on well-being. Our primary concern was to examine how religion, as a heuristic practice of Christian-based caregiving, was felt to be consequential in a direly underserved region. Part of a larger medical anthropological project, we conducted semi-structured interviews with 79 community home-based care clients, of whom half (53%) said they would have died, some from suicide, without its services...
November 15, 2016: Medical Anthropology
https://www.readbyqxmd.com/read/27845476/are-liquids-an-efficient-vehicle-of-healthcare-associated-infections-a-review-of-reported-cases-in-italy-2000-2014
#19
D D'Alessandro, A Nusca, C Napoli
INTRODUCTION: In the field of healthcare-associated infections (HCAIs), one of the most reported, studied and discussed sources of infections is water, partly due to its controllability, but also because healthcare facilities, especially hospitals, require a significant quantity of water per day. In addition to water, during healthcare procedures, other liquids can serve as source of infections. The present study reports a review of those HCAIs associated to liquid vehicles occurred in Italy during the period 2000-2014...
November 2016: Annali di Igiene: Medicina Preventiva e di Comunità
https://www.readbyqxmd.com/read/27830418/do-estrogenic-compounds-in-drinking-water-migrating-from-plastic-pipe-distribution-system-pose-adverse-effects-to-human-an-analysis-of-scientific-literature
#20
Ze-Hua Liu, Hua Yin, Zhi Dang
With the widespread application of plastic pipes in drinking water distribution system, the effects of various leachable organic chemicals have been investigated and their occurrence in drinking water supplies is monitored. Most studies focus on the odor problems these substances may cause. This study investigates the potential endocrine disrupting effects of the migrating compound 2,4-di-tert-butylphenol (2,4-d-t-BP). The summarized results show that the migration of 2,4-d-t-BP from plastic pipes could result in chronic exposure and the migration levels varied greatly among different plastic pipe materials and manufacturing brands...
November 9, 2016: Environmental Science and Pollution Research International
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