keyword
MENU ▼
Read by QxMD icon Read
search

Environmental load

keyword
https://www.readbyqxmd.com/read/28088722/in-situ-denitrification-and-dnra-rates-in-groundwater-beneath-an-integrated-constructed-wetland
#1
M M R Jahangir, O Fenton, C Müller, R Harrington, P Johnston, K G Richards
Evaluation of the environmental benefits of constructed wetlands (CWs) requires an understanding of their impacts on the groundwater quality under the wetlands. Empirical mass-balance (nitrogen in/nitrogen out) approaches for estimating nitrogen (N) removal in CWs do not characterise the final fate of N; where nitrate (NO3(-)-N) could be reduced to either ammonium (NH4(+)-N) or N2 with the potential for significant production of N2O. Herein, in situ denitrification and DNRA (dissimilatory nitrate reduction to ammonium) rates were measured in groundwater beneath cells of an earthen lined integrated constructed wetland (ICW, used to remove the nutrients from municipal wastewater) using the (15)N-enriched NO3(-)-N push-pull method...
January 7, 2017: Water Research
https://www.readbyqxmd.com/read/28088363/seasonal-variations-of-u-s-mortality-rates-roles-of-solar-ultraviolet-b-doses-vitamin-d-gene-exp-ression-and-infections
#2
REVIEW
William B Grant, Harjit Pal Bhattoa, Barbara J Boucher
Death rates in the U.S. show a pronounced seasonality. The broad seasonal variation shows about 25% higher death rates in winter than in summer with an additional few percent increase associated with the Christmas and New Year's holidays. A pronounced increase in death rates also starts in mid-September, shortly after the school year begins. The causes of death with large contributions to the observed seasonality include diseases of the circulatory system; the respiratory system; the digestive system; and endocrine, nutritional, and metabolic diseases...
January 11, 2017: Journal of Steroid Biochemistry and Molecular Biology
https://www.readbyqxmd.com/read/28086957/regulatory-t-cells-and-il10-suppress-pulmonary-host-defense-during-early-life-exposure-to-radical-containing-combustion-derived-ultrafine-particulate-matter
#3
Sridhar Jaligama, Jordy Saravia, Dahui You, Nikki Yadav, Greg I Lee, Bishwas Shrestha, Stephania A Cormier
BACKGROUND: Exposure to elevated levels of particulate matter (PM) is associated with increased risk of morbidity and mortality due to respiratory tract viral infections in infants. Recent identification of environmentally persistent free radicals (EPFRs) in the PM from a variety of combustion sources suggests its role in the enhancement of disease severity of lower respiratory tract infections (LRTI). Our previous studies demonstrated that acute exposure to EPFRs induces pulmonary immunosuppression allowing for enhanced influenza disease severity...
January 13, 2017: Respiratory Research
https://www.readbyqxmd.com/read/28080982/drivers-of-variation-in-species-impacts-for-a-multi-host-fungal-disease-of-bats
#4
Kate E Langwig, Winifred F Frick, Joseph R Hoyt, Katy L Parise, Kevin P Drees, Thomas H Kunz, Jeffrey T Foster, A Marm Kilpatrick
Disease can play an important role in structuring species communities because the effects of disease vary among hosts; some species are driven towards extinction, while others suffer relatively little impact. Why disease impacts vary among host species remains poorly understood for most multi-host pathogens, and factors allowing less-susceptible species to persist could be useful in conserving highly affected species. White-nose syndrome (WNS), an emerging fungal disease of bats, has decimated some species while sympatric and closely related species have experienced little effect...
December 5, 2016: Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences
https://www.readbyqxmd.com/read/28079171/comfortable-high-efficiency-heat-pump-with-desiccant-coated-water-sorbing-heat-exchangers
#5
Y D Tu, R Z Wang, T S Ge, X Zheng
Comfortable, efficient, and affordable heating, ventilation, and air conditioning systems in buildings are highly desirable due to the demands of energy efficiency and environmental friendliness. Traditional vapor-compression air conditioners exhibit a lower coefficient of performance (COP) (typically 2.8-3.8) owing to the cooling-based dehumidification methods that handle both sensible and latent loads together. Temperature- and humidity-independent control or desiccant systems have been proposed to overcome these challenges; however, the COP of current desiccant systems is quite small and additional heat sources are usually needed...
January 12, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28077246/testing-of-a-palatable-bait-and-compatible-vaccine-carrier-for-the-oral-vaccination-of-european-badgers-meles-meles-against-tuberculosis
#6
Sonya Gowtage, Gareth A Williams, Ray Henderson, Paul Aylett, Duncan MacMorran, Si Palmer, Andy Robertson, Sandrine Lesellier, Stephen P Carter, Mark A Chambers
The oral vaccination of wild badgers (Meles meles) with live Bacillus Calmette-Guérin (BCG) is one of the tools being considered for the control of bovine tuberculosis (caused by Mycobacterium bovis) in the UK. The design of a product for oral vaccination requires that numerous, and often competing, conditions are met. These include the need for a highly palatable, but physically stable bait that will meet regulatory requirements, and one which is also compatible with the vaccine formulation; in this case live BCG...
January 9, 2017: Vaccine
https://www.readbyqxmd.com/read/28073542/the-rise-of-toxic-benthic-phormidium-proliferations-a-review-of-their-taxonomy-distribution-toxin-content-and-factors-regulating-prevalence-and-increased-severity
#7
REVIEW
Tara G McAllister, Susanna A Wood, Ian Hawes
There has been a marked increase in the distribution, intensity and frequency of proliferations of some species of the benthic mat-forming, toxin-producing genus Phormidium in rivers globally over the last decade. This review summarises current knowledge on their taxonomy, distribution, toxin content, environmental drivers of proliferations, and monitoring and management strategies in New Zealand. Although toxic Phormidium proliferation occurs in rivers worldwide little is known about these factors in most countries...
May 2016: Harmful Algae
https://www.readbyqxmd.com/read/28073525/delineation-of-the-role-of-nutrient-variability-and-dreissenids-mollusca-bivalvia-on-phytoplankton-dynamics-in-the-bay-of-quinte-ontario-canada
#8
Yuko Shimoda, Sue B Watson, Michelle E Palmer, Marten A Koops, Shan Mugalingam, Andrew Morley, George B Arhonditsis
The Bay of Quinte, a Z-shaped embayment at the northeastern end of Lake Ontario, has a long history of eutrophication problems primarily manifested as spatially extensive algal blooms and predominance of toxic cyanobacteria. The purpose of this study was to identify the structural changes of the phytoplankton community induced by two environmental alterations: point-source phosphorus (P) loading reduction in the late 1970s and establishment of dreissenid mussels in the mid-1990s. A combination of statistical techniques was used to draw inference about compositional shifts of the phytoplankton assemblage, the consistency of the seasonal succession patterns along with the mechanisms underlying the algal biovolume variability in the Bay of Quinte over the past three decades...
May 2016: Harmful Algae
https://www.readbyqxmd.com/read/28070811/encaged-chironomus-riparius-larvae-in-assessment-of-trace-metal-bioavailability-and-transfer-in-a-landfill-leachate-collection-pond
#9
Frédéric Gimbert, Quentin Petitjean, Ahmed Al-Ashoor, Céline Cretenet, Lotfi Aleya
Household wastes may constitute a vector of environmental contamination when buried, in particular through degradation and production of leachates containing significant trace metal (TM) concentrations that may constitute a serious risk to biota. The objectives of this study were to assess the bioavailability and transfer potential of various TMs present in water and sediments in a reservoir receiving landfill leachates. An active biomonitoring approach was adopted consisting of exposing naive laboratory organisms in cages deployed in the field...
January 9, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28070455/social-and-environmental-factors-modulate-leucocyte-profiles-in-free-living-greylag-geese-anser-anser
#10
Didone Frigerio, Sonja C Ludwig, Josef Hemetsberger, Kurt Kotrschal, Claudia A F Wascher
BACKGROUND: Blood parameters such as haematocrit or leucocyte counts are indicators of immune status and health, which can be affected, in a complex way, by exogenous as well as endogenous factors. Additionally, social context is known to be among the most potent stressors in group living individuals, therefore potentially influencing haematological parameters. However, with few exceptions, this potential causal relationship received only moderate scientific attention. METHODS: In a free-living and individually marked population of the highly social and long-lived Greylag goose, Anser anser, we relate variation in haematocrit (HCT), heterophils to lymphocytes ratio (H/L) and blood leucocyte counts to the following factors: intrinsic (sex, age, raising condition, i...
2017: PeerJ
https://www.readbyqxmd.com/read/28069189/ultrasound-treated-potato-peel-and-sweet-lime-pomace-based-biopolymer-film-development
#11
Purba Prasad Borah, Pulak Das, Laxmikant S Badwaik
Treatment and management of food processing waste is a major challenge for food industry. Potato processing industry generates tremendous amount of peel and consider it as zero valued waste. Again, pomace generated after juice extraction from sweet lime pulp is considered as waste and not properly utilized. Whereas these waste could be utilized for the development of biodegradable packaging film to overcome environmental issues. Composite films were prepared with varying proportion of potato peel powder (PP) and sweet lime pomace (SLP) in the ratio of 0:1(A), 0...
May 2017: Ultrasonics Sonochemistry
https://www.readbyqxmd.com/read/28067898/clay-nanosheets-for-topical-delivery-of-rnai-for-sustained-protection-against-plant-viruses
#12
Neena Mitter, Elizabeth A Worrall, Karl E Robinson, Peng Li, Ritesh G Jain, Christelle Taochy, Stephen J Fletcher, Bernard J Carroll, G Q Max Lu, Zhi Ping Xu
Topical application of pathogen-specific double-stranded RNA (dsRNA) for virus resistance in plants represents an attractive alternative to transgenic RNA interference (RNAi). However, the instability of naked dsRNA sprayed on plants has been a major challenge towards its practical application. We demonstrate that dsRNA can be loaded on designer, non-toxic, degradable, layered double hydroxide (LDH) clay nanosheets. Once loaded on LDH, the dsRNA does not wash off, shows sustained release and can be detected on sprayed leaves even 30 days after application...
January 9, 2017: Nature Plants
https://www.readbyqxmd.com/read/28064370/changes-in-sport-fish-mercury-concentrations-from-food-web-shifts-suggest-partial-decoupling-from-atmospheric-deposition-in-two-colorado-reservoirs
#13
Brian A Wolff, Brett M Johnson, Jesse M Lepak
Partial decoupling of mercury (Hg) loading and observed Hg concentrations ([Hg]) in biotic and abiotic samples has been documented in aquatic systems. We studied two Colorado reservoirs to test whether shifts in prey for sport fish would lead to changes in [Hg] independent of external atmospheric Hg deposition. We compared sport fish total mercury concentrations ([T-Hg]) and macroinvertebrate (chironomids and crayfish) methylmercury concentrations ([MeHg]) before and after food web shifts occurred in both reservoirs...
January 7, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28062097/vicissitudes-of-oxidative-stress-biomarkers-in-the-estuarine-crab-scylla-serrata-with-reference-to-dry-and-wet-weather-conditions-in-ennore-estuary-tamil-nadu-india
#14
M G Ragunathan
The primary objective of this study was to understand the impact of monsoon and summer seasons on the Polychlorinated Biphenyls (PCB's) and petroleum hydrocarbon compounds (PHC's) load in Ennore estuary and how the physiological response of estuarine Scylla serrata inhabiting in this estuary changed with reference to antioxidant defense. Seasonal levels of PCB's and PHC's were assessed in the water along with their bioaccumulation in gills, hemolymph, hepatopancreas and ovary of S. serrata. Concentration of PCB's and PHC's in water and their bioaccumulation was found to be higher in summer season when compared to monsoon season...
January 3, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28058248/first-multi-year-retrospective-study-on-vibrio-parhaemolyticus-and-vibrio-vulnificus-prevalence-in-ruditapes-philippinarum-harvested-in-sacca-di-goro-italy
#15
Patrizia Serratore, Fabio Ostanello, Pier Luca Passalacqua, Emanuele Zavatta, Giorgia Bignami, Andrea Serraino, Federica Giacometti
The present work describes a retrospective study aiming to verify a possible correlation between the environmental conditions (temperature, salinity and dissolved oxygen), the abundance of Vibrio spp., and the prevalence of V. parahaemolyticus and V. vulnificus in the Manila clam R. philippinarum harvested in Sacca di Goro, Emilia-Romagna Region, Northern Italy. On the whole, 104 samples, collected in the period 2007-2015 and submitted to microbiological analyses (isolation and genotyping), have been reconsidered for Vibrio spp...
September 20, 2016: Italian Journal of Food Safety
https://www.readbyqxmd.com/read/28054589/large-scale-thick-self-assembled-nacre-mimetic-brick-walls-as-fire-barrier-coatings-on-textiles
#16
Paramita Das, Helga Thomas, Martin Moeller, Andreas Walther
Highly loaded polymer/clay nanocomposites with layered structures are emerging as robust fire retardant surface coatings. However, time-intensive sequential deposition processes, e.g. layer-by-layer strategies, hinders obtaining large coating thicknesses and complicates an implementation into existing technologies. Here, we demonstrate a single-step, water-borne approach to prepare thick, self-assembling, hybrid fire barrier coatings of sodium carboxymethyl cellulose (CMC)/montmorillonite (MTM) with well-defined, bioinspired brick-wall nanostructure, and showcase their application on textile...
January 5, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28054272/enhanced-bacterial-affinity-of-pvdf-membrane-its-application-as-improved-sea-water-sampling-tool-for-environmental-monitoring
#17
Sweta Binod Kumar, Preeti Sharnagat, Paramita Manna, Amit Bhattacharya, Soumya Haldar
Isolation of diversified bacteria from seawater is a major challenge in the field of environmental microbiology. In the present study, an attempt has been made to select specific membrane with improved property of attaching diversified bacteria. Initially, different concentrations (15, 18, and 20% W/W) of polysulfone (PSF) were used to check their affinity for the attachment of selected gram-positive (Bacillus subtilis) and gram-negative (Escherichia coli) bacteria. Among these, 20% W/W PSF showed maximum attachment...
January 5, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28051082/synthesis-of-single-crystal-like-nanoporous-carbon-membranes-and-their-application-in-overall-water-splitting
#18
Hong Wang, Shixiong Min, Chun Ma, Zhixiong Liu, Weiyi Zhang, Qiang Wang, Debao Li, Yangyang Li, Stuart Turner, Yu Han, Haibo Zhu, Edy Abou-Hamad, Mohamed Nejib Hedhili, Jun Pan, Weili Yu, Kuo-Wei Huang, Lain-Jong Li, Jiayin Yuan, Markus Antonietti, Tom Wu
Nanoporous graphitic carbon membranes with defined chemical composition and pore architecture are novel nanomaterials that are actively pursued. Compared with easy-to-make porous carbon powders that dominate the porous carbon research and applications in energy generation/conversion and environmental remediation, porous carbon membranes are synthetically more challenging though rather appealing from an application perspective due to their structural integrity, interconnectivity and purity. Here we report a simple bottom-up approach to fabricate large-size, freestanding and porous carbon membranes that feature an unusual single-crystal-like graphitic order and hierarchical pore architecture plus favourable nitrogen doping...
January 4, 2017: Nature Communications
https://www.readbyqxmd.com/read/28049053/layer-by-layer-encapsulated-nano-emulsion-of-ionic-liquid-loaded-with-functional-material-for-extraction-of-cd-2-ions-from-aqueous-solutions
#19
Iuliia S Elizarova, Paul F Luckham
Ionic liquids can serve as an environmentally-friendly replacement for solvents in emulsions, therefore they are considered suitable to be used as an emulsified medium for various active materials one of which are extractors of metal ions. Increasing the extraction efficiency is considered to be one of the key objectives when working with such extraction systems. One way to improve the extraction efficiency is to increase the contact area between the extractant and the working ionic solution. This can be accomplished by creating a nano-emulsion of ionic liquid containing such an extractant...
December 24, 2016: Journal of Colloid and Interface Science
https://www.readbyqxmd.com/read/28046131/biological-recovery-of-platinum-complexes-from-diluted-aqueous-streams-by-axenic-cultures
#20
Synthia Maes, Ruben Props, Jeffrey P Fitts, Rebecca De Smet, Frank Vanhaecke, Nico Boon, Tom Hennebel
The widespread use of platinum in high-tech and catalytic applications has led to the production of diverse Pt loaded wastewaters. Effective recovery strategies are needed for the treatment of low concentrated waste streams to prevent pollution and to stimulate recovery of this precious resource. The biological recovery of five common environmental Pt-complexes was studied under acidic conditions; the chloro-complexes PtCl42- and PtCl62-, the amine-complex Pt(NH3)4Cl2 and the pharmaceutical complexes cisplatin and carboplatin...
2017: PloS One
keyword
keyword
95905
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"