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https://www.readbyqxmd.com/read/28091884/pre-mining-trace-element-and-radiation-exposure-to-biota-from-a-breccia-pipe-uranium-mine-in-the-grand-canyon-arizona-usa-watershed
#1
Jo Ellen Hinck, Danielle Cleveland, William G Brumbaugh, Greg Linder, Julia Lankton
The risks to wildlife and humans from uranium (U) mining in the Grand Canyon watershed are largely unknown. In addition to U, other co-occurring ore constituents contribute to risks to biological receptors depending on their toxicological profiles. This study characterizes the pre-mining concentrations of total arsenic (As), cadmium (Cd), copper (Cu), lead (Pb), mercury (Hg), nickel (Ni), selenium (Se), thallium (Tl), U, and zinc (Zn); radiation levels; and histopathology in biota (vegetation, invertebrates, amphibians, birds, and mammals) at the Canyon Mine...
February 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28065549/an-experimental-investigation-of-underwater-spread-of-oil-spill-in-a-shear-flow
#2
Hongjun Zhu, Jiahui You, Honglei Zhao
The time taken for spilt oil to appear firstly at the sea surface and its location are two key issues for emergency response. The underwater spread of oil spill in a shear flow was studied experimentally in a re-circulating water channel. The high speed imaging technology was employed to record the whole transport process of oil spilt from a leak of a submarine pipe to the surface. Based on the experimental results, three underwater transport types are identified, which are single droplet pattern (model A), linear chain pattern (model B) and oil plume pattern (model C), respectively...
January 5, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28064368/nanostructured-zno-films-on-stainless-steel-are-highly-safe-and-effective-for-antimicrobial-applications
#3
Kyudae Shim, Mohamed Abdellatif, Eunsoo Choi, Dongkyun Kim
The safety and effectiveness of antimicrobial ZnO films must be established for general applications. In this study, the antimicrobial activity, skin irritation, elution behavior, and mechanical properties of nanostructured ZnO films on stainless steel were evaluated. ZnO nanoparticle (NP) and ZnO nanowall (NW) structures were prepared with different surface roughnesses, wettability, and concentrations using an RF magnetron sputtering system. The thicknesses of ZnO NP and ZnO NW were approximately 300 and 620 nm, respectively, and ZnO NW had two diffraction directions of [0002] and [01-10] based on high-resolution transmission electron microscopy...
January 7, 2017: Applied Microbiology and Biotechnology
https://www.readbyqxmd.com/read/28060947/effectiveness-of-devices-to-monitor-biofouling-and-metals-deposition-on-plumbing-materials-exposed-to-a-full-scale-drinking-water-distribution-system
#4
Maneesha P Ginige, Scott Garbin, Jason Wylie, K C Bal Krishna
A Modified Robbins Device (MRD) was installed in a full-scale water distribution system to investigate biofouling and metal depositions on concrete, high-density polyethylene (HDPE) and stainless steel surfaces. Bulk water monitoring and a KIWA monitor (with glass media) were used to offline monitor biofilm development on pipe wall surfaces. Results indicated that adenosine triphosphate (ATP) and metal concentrations on coupons increased with time. However, bacterial diversities decreased. There was a positive correlation between increase of ATP and metal deposition on pipe surfaces of stainless steel and HDPE and no correlation was observed on concrete and glass surfaces...
2017: PloS One
https://www.readbyqxmd.com/read/28048404/we-h-201-03-enthusiasm-and-generosity-of-spirit-necessitate-a-volunteering-structure-to-make-them-more-meaningful
#5
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
#6
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
#7
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
#8
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
#9
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/28043524/in-vitro-effects-of-water-pipe-smoke-condensate-on-the-endocytic-activity-of-type-ii-alveolar-epithelial-cells-a549-with-bacillus-calmette-gu%C3%A3-rin
#10
Ian M Adcock, Esmaeil Mortaz, Shamila D Alipoor, Johan Garssen, Ali Akbar Velayati
OBJECTIVE/BACKGROUND: Tuberculosis (TB) is a major global health problem and poses immense threats to many populations. The association between tobacco smoke and TB has already been studied. Water-pipe smoking has become an increasing problem not only in Middle Eastern countries but also globally as it is considered by users as being safer than cigarettes. The presence of high levels of toxic substances in water-pipe smoke may be predisposing factors that enhance the incidence of pulmonary disorders in water-pipe smokers...
December 2016: International Journal of Mycobacteriology
https://www.readbyqxmd.com/read/28043001/flow-cytometry-for-immediate-follow-up-of-drinking-water-networks-after-maintenance
#11
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/28041694/spatial-and-temporal-analogies-in-microbial-communities-in-natural-drinking-water-biofilms
#12
I Douterelo, M Jackson, C Solomon, J Boxall
Biofilms are ubiquitous throughout drinking water distribution systems (DWDS), playing central roles in system performance and delivery of safe clean drinking water. However, little is known about how the interaction of abiotic and biotic factors influence the microbial communities of these biofilms in real systems. Results are presented here from a one-year study using in situ sampling devices installed in two operational systems supplied with different source waters. Independently of the characteristics of the incoming water and marked differences in hydraulic conditions between sites and over time, a core bacterial community was observed in all samples suggesting that internal factors (autogenic) are central in shaping biofilm formation and composition...
December 29, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/28018408/integrating-high-resolution-water-footprint-and-gis-for-promoting-water-efficiency-in-the-agricultural-sector-a-case-study-of-plantation-crops-in-the-jordan-valley
#13
Eliav Shtull-Trauring, Ido Aviani, Dror Avisar, Nirit Bernstein
Addressing the global challenges to water security requires a better understanding of humanity's use of water, especially the agricultural sector that accounts for 70% of global withdrawals. This study combined high resolution-data with a GIS system to analyze the impact of agricultural practices, crop type, and spatial factors such as drainage basins, climate, and soil type on the Water Footprint (WF) of agricultural crops. The area of the study, the northern Lower Jordan Valley, covers 1121 ha in which three main plantation crops are grown: banana (cultivated in open-fields or net-houses), avocado and palm-dates...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/28000959/a-molecular-water-pipe-a-giant-tubular-cluster-dy72-exhibits-fast-proton-transport-and-slow-magnetic-relaxation
#14
Lei Qin, You-Zhu Yu, Pei-Qin Liao, Wei Xue, Zhiping Zheng, Xiao-Ming Chen, Yan-Zhen Zheng
A lanthanide cluster, PCC-72, which is the second largest, with 72 Dy(III) ions assembled into an unprecedented tubular structure, is synthesized. Remarkably, PCC-72 exhibits superionic proton conductivity (>10(-4) S cm(-1) ) under both ambient (with relative humidity RH < 75%) and hot (T > 90 °C, RH = 95%) conditions. Moreover, slow magnetic relaxation is observed, making PCC-72 the largest Dy(III) cluster that is a single-molecule magnet.
December 2016: Advanced Materials
https://www.readbyqxmd.com/read/27999820/how-should-disaster-base-hospitals-prepare-for-dialysis-therapy-after-earthquakes-introduction-of-double-water-piping-circuits-provided-by-well-water-system
#15
REVIEW
Naoki Ikegaya, George Seki, Nobutaka Ohta
After earthquakes, continuing dialysis for patients with ESRD and patients suffering from crush syndrome is the serious problem. In this paper, we analyzed the failure of the provision of dialysis services observed in recent disasters and discussed how to prepare for disasters to continue dialysis therapy. Japan has frequently experienced devastating earthquakes. A lot of dialysis centers could not continue dialysis treatment owing to damage caused by these earthquakes. The survey by Japanese Society for Dialysis Treatment (JSDT) after the Great East Japan Earthquake in 2011 showed that failure of lifelines such as electric power and water supply was the leading cause of the malfunction of dialysis treatment...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27998057/spatial-models-of-sewer-pipe-leakage-predict-the-occurrence-of-wastewater-indicators-in-shallow-urban-groundwater
#16
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/27997399/structural-improvements-on-hydrodynamic-separators-a-computational-fluid-dynamics-approach
#17
Joseph Albert Mendoza, Dong Hoon Lee, Sang-Il Lee, Joo-Hyon Kang
Hydrodynamic separators (HDSs) have been used extensively to reduce stormwater pollutants from urbanized areas before entering the receiving water bodies. They primarily remove particulates and associated pollutants using gravity settling. Two types of HDSs with different structural configurations of the inner vortex-inducing components were presented in this study. One configuration consisted of a dip cylindrical plate with a center shaft while the other one has a hollow screen inside. With the help of computational fluid dynamics, the performance of these different types of HDSs have been evaluated and comparatively analyzed...
December 2016: Water Science and Technology: a Journal of the International Association on Water Pollution Research
https://www.readbyqxmd.com/read/27988901/characteristics-of-the-overflow-pollution-of-storm-drains-with-inappropriate-sewage-entry
#18
Hailong Yin, Yi Lu, Zuxin Xu, Huaizheng Li, Benedict R Schwegler
To probe the overflow pollution of separate storm drains with inappropriate sewage entries, in terms of the relationship between sewage entries and the corresponding dry-weather and wet-weather overflow, the monitoring activities were conducted in a storm drainage system in the Shanghai downtown area (374 ha). In this study site, samples from inappropriately entered dry-weather sewage and the overflow due to storm pumps operation on dry-weather and wet-weather days were collected and then monitored for six water quality constituents...
December 17, 2016: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/27974249/elimination-of-naegleria-fowleri-from-bulk-water-and-biofilm-in-an-operational-drinking-water-distribution-system
#19
Haylea C Miller, Matthew J Morgan, Jason T Wylie, Anna H Kaksonen, David Sutton, Kalan Braun, Geoffrey J Puzon
Global incidence of primary amoebic meningoencephalitis cases associated with domestic drinking water is increasing. The need for understanding disinfectant regimes capable of eliminating the causative microorganism, Naegleria fowleri, from bulk water and pipe wall biofilms is critical. This field study demonstrated the successful elimination of N. fowleri from the bulk water and pipe wall biofilm of a persistently colonised operational drinking water distribution system (DWDS), and the prevention of further re-colonisation...
November 27, 2016: Water Research
https://www.readbyqxmd.com/read/27959261/-acute-carbon-monoxide-poisoning-after-water-pipe-tobacco-smoking
#20
Jakob Felbo Paulsen, Kasper von Rosen Villads, Morten Egede Sonne
Carbon monoxide poisoning is potentially lethal, and early recognition and treatment is essential. An 18-year-old man was admitted due to syncope and a carboxyhaemoglobin level of 17% after water pipe tobacco smoking. He received normo- and hyperbaric oxygen as treatment and was discharged after two days without neurological sequelae. This case is the first in Denmark, but recently seven similar cases have been reported. The number of young people smoking water pipe tobacco is increasing, and we fear that more cases like this will occur in the future...
December 5, 2016: Ugeskrift for Laeger
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