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https://www.readbyqxmd.com/read/27923048/contribution-of-wastewater-irrigation-to-soil-transmitted-helminths-infection-among-vegetable-farmers-in-kumasi-ghana
#1
Isaac Dennis Amoah, Amina Abubakari, Thor Axel Stenström, Robert Clement Abaidoo, Razak Seidu
Wastewater irrigation is associated with several benefits but can also lead to significant health risks. The health risk for contracting infections from Soil Transmitted Helminths (STHs) among farmers has mainly been assessed indirectly through measured quantities in the wastewater or on the crops alone and only on a limited scale through epidemiological assessments. In this study we broadened the concept of infection risks in the exposure assessments by measurements of the concentration of STHs both in wastewater used for irrigation and the soil, as well as the actual load of STHs ova in the stool of farmers and their family members (165 and 127 in the wet and dry seasons respectively) and a control group of non-farmers (100 and 52 in the wet and dry seasons, respectively)...
December 2016: PLoS Neglected Tropical Diseases
https://www.readbyqxmd.com/read/27922131/different-responses-of-alpine-plants-to-nitrogen-addition-effects-on-plant-plant-interactions
#2
Jun Wang, Peng Luo, Hao Yang, Chengxiang Mou, Li Mo
The different responses of plant species to resource stress are keys to understand the dynamics of plant community in a changing environment. To test the hypothesis that nitrogen (N) increase would benefit N competitive species, rather than N stress-tolerant species, to compete with neighbours, we conducted an experiment with neighbour removal, N addition and soil moisture as treatments in an alpine grassland on the southeastern Tibetan Plateau. Both growths and competitive-response abilities (CRA, the ability to tolerate the inhibitory effects of neighbors) of Kobresia macrantha, Polygonum viviparum and Potentilla anserine in wet site were facilitated by N addition, conversely, both growths and CRA of Taraxacum mongolicum and Ligularia virgaurea were suppressed by N addition, indicating that the responses of CRA of target species under N addition were consistent with the N utilization strategies of them...
December 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27922096/enantiomer-signature-and-carbon-isotope-evidence-for-the-migration-and-transformation-of-ddts-in-arable-soils-across-china
#3
Lili Niu, Chao Xu, Siyu Zhu, Huiming Bao, Yang Xu, Hongyi Li, Zhijian Zhang, Xichang Zhang, Jiguo Qiu, Weiping Liu
Due to the adverse impact of DDTs on ecosystems and humans, a full fate assessment deems a comprehensive study on their occurrence in soils over a large region. Through a sampling campaign across China, we measured the concentrations, enantiomeric fractions (EFs), compound-specific carbon isotope composition of DDT and its metabolites, and the microbial community in related arable soils. The geographically total DDT concentrations are higher in eastern than western China. The EFs and δ(13)C of o,p'-DDT in soils from western China show smaller deviations from those of racemic/standard compound, indicating the DDT residues there mainly result from atmospheric transport...
December 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27922013/erratum-phylogenetic-and-functional-potential-links-ph-and-n2o-emissions-in-pasture-soils
#4
Md Sainur Samad, Ambarish Biswas, Lars R Bakken, Timothy J Clough, Cecile A M de Klein, Karl G Richards, Gary J Lanigan, Sergio E Morales
No abstract text is available yet for this article.
December 6, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27921173/day-to-day-variations-in-the-amplitude-of-the-soil-temperature-cycle-and-impact-on-adult-eclosion-timing-of-the-onion-fly
#5
Kazuhiro Tanaka, Yasuhiko Watari
The onion fly Delia antiqua advances its eclosion timing with decreasing temperature amplitude to compensate for a depth-dependent phase delay of the zeitgeber. To elucidate whether or not naturally occurring day-to-day variations in the amplitude of soil temperature cycle disturb this compensatory response, we monitored daily variations in the temperature amplitude in natural soils and evaluated the impact on adult eclosion timing. Our results indicated that both median and variance of the soil temperature amplitude become smaller as depth increases...
December 5, 2016: International Journal of Biometeorology
https://www.readbyqxmd.com/read/27921043/metabolic-vascular-syndrome-new-insights-into-a-multidimensional-network-of-risk-factors-and-diseases
#6
REVIEW
Gerhard H Scholz, Markolf Hanefeld
BACKGROUND: Since 1981, we have used the term metabolic syndrome to describe an association of a dysregulation in lipid metabolism (high triglycerides, low high-density lipoprotein cholesterol, disturbed glucose homeostasis (enhanced fasting and/or prandial glucose), gout, and hypertension), with android obesity being based on a common soil (overnutrition, reduced physical activity, sociocultural factors, and genetic predisposition). We hypothesized that main traits of the syndrome occur early and are tightly connected with hyperinsulinemia/insulin resistance, procoagulation, and cardiovascular diseases...
October 2016: Visceral Medicine
https://www.readbyqxmd.com/read/27920982/clinical-implications-of-paracoccus-yeeii-bacteremia-in-a-patient-with-decompensated-cirrhosis
#7
Jordan Sack, David R Peaper, Pramod Mistry, Maricar Malinis
Infections in patients with cirrhosis are common among those who develop variceal hemorrhage. Prophylactic antimicrobial treatment with third generation cephalosporins is recommended in patients with advanced cirrhosis and gastrointestinal hemorrhage. However no infectious source is identified in up to 50% of patients with cirrhosis and clinical sepsis. We report the first case of Paracoccus yeeii bacteremia in a patient with decompensated cirrhosis who presented with variceal hemorrhage. This rare gram negative organism that occurs naturally in the soil has been difficult to isolate until recent technological advances and may not be susceptible to third generation cephalosporins...
2017: IDCases
https://www.readbyqxmd.com/read/27920783/genomic-tools-in-pearl-millet-breeding-for-drought-tolerance-status-and-prospects
#8
REVIEW
Desalegn D Serba, Rattan S Yadav
Pearl millet [Penisetum glaucum (L) R. Br.] is a hardy cereal crop grown in the arid and semiarid tropics where other cereals are likely to fail to produce economic yields due to drought and heat stresses. Adaptive evolution, a form of natural selection shaped the crop to grow and yield satisfactorily with limited moisture supply or under periodic water deficits in the soil. Drought tolerance is a complex polygenic trait that various morphological and physiological responses are controlled by 100s of genes and significantly influenced by the environment...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27920781/inoculation-of-schizolobium-parahyba-with-mycorrhizal-fungi-and-plant-growth-promoting-rhizobacteria-increases-wood-yield-under-field-conditions
#9
Martha V T Cely, Marco A Siviero, Janaina Emiliano, Flávia R Spago, Vanessa F Freitas, André R Barazetti, Erika T Goya, Gustavo de Souza Lamberti, Igor M O Dos Santos, Admilton G De Oliveira, Galdino Andrade
Schizolobium parahyba var. amazonicum (Huber ex Ducke) occurs naturally in the Brazilian Amazon. Currently, it is being planted extensively because of its fast growth and excellent use in forestry. Consequently, there is great interest in new strategies to increase wood production. The interaction between soil microorganisms and plants, specifically in the roots, provides essential nutrients for plant growth. These interactions can have growth-promoting effects. In this way, this study assessed the effect of the inoculation with arbuscular mycorrhizal fungi (AMF) and plant growth-promoting rhizobacteria (PGPR) on growth of S...
2016: Frontiers in Plant Science
https://www.readbyqxmd.com/read/27920771/evidence-for-ecological-flexibility-in-the-cosmopolitan-genus-curtobacterium
#10
Alexander B Chase, Philip Arevalo, Martin F Polz, Renaud Berlemont, Jennifer B H Martiny
Assigning ecological roles to bacterial taxa remains imperative to understanding how microbial communities will respond to changing environmental conditions. Here we analyze the genus Curtobacterium, as it was found to be the most abundant taxon in a leaf litter community in southern California. Traditional characterization of this taxon predominantly associates it as the causal pathogen in the agricultural crops of dry beans. Therefore, we sought to investigate whether the abundance of this genus was because of its role as a plant pathogen or another ecological role...
2016: Frontiers in Microbiology
https://www.readbyqxmd.com/read/27920657/disseminated-histoplasmosis-a-challenging-differential-diagnostic-consideration-for-suspected-malignant-lesions-in-the-digestive-tract
#11
Bernhard Doleschal, Therese Rödhammer, Oleksiy Tsybrovskyy, Karl J Aichberger, Franz Lang
Histoplasmosis is well characterized as an endemic fungal disease restricted to certain areas of the USA. In Middle Europe, most patients present with acute pulmonary symptoms after travelling to endemic areas. Here, we want to illustrate the case of a 67-year-old man who presented with persistent oral ulcers, hoarseness, dysphagia, diarrhea, and weight loss to our Department of Otorhinolaryngology in December 2014. He was a retired construction worker and had a history of soil-disruptive activities in Africa and Middle and South America during employment...
September 2016: Case Reports in Gastroenterology
https://www.readbyqxmd.com/read/27919533/biochar-applied-at-an-appropriate-rate-can-avoid-increasing-nh3-volatilization-dramatically-in-rice-paddy-soil
#12
Yanfang Feng, Haijun Sun, Lihong Xue, Yang Liu, Qian Gao, Kouping Lu, Linzhang Yang
Biochar application can increase carbon sequestration and reduce greenhouse gases emissions in paddy soils. However, its influence on ammonia (NH3) volatilization is neglected. This soil column study was conducted using two biochars (wheat straw pyrolyzed at 500 °C and 700 °C) with two application rates (0.5 wt% and 3 wt%) to evaluate their impact on NH3 volatilization from rice paddy. Results showed that biochar application did not change NH3 volatilization fluxes pattern after N fertilization. Four biochar treatments recorded higher NH3 volatilization (20...
December 2, 2016: Chemosphere
https://www.readbyqxmd.com/read/27919531/adsorption-of-perfluorooctane-sulfonate-on-soils-effects-of-soil-characteristics-and-phosphate-competition
#13
Jin Qian, Mengmeng Shen, Peifang Wang, Chao Wang, Jun Hou, Yanhui Ao, Jingjing Liu, Kun Li
Perfluorooctane sulfonate (PFOS) is an emerging contaminant, whose presence has been detected in different compartments of the environment in many countries. In this study, the effects of soil characteristics and phosphate competition on the adsorption of PFOS on soils were investigated. Results from batch sorption experiments showed that all the adsorption isotherms of PFOS on three tested soils were nonlinear. In experiments without the addition of phosphate (P) to the soil solution, the Freundlich sorption affinity (Kf) of PFOS on S (original soil), S1 (soil from which soil organic matter (SOM) had been removed), and S2 (soil from which both SOM and ferric oxides had been removed) were 23...
December 3, 2016: Chemosphere
https://www.readbyqxmd.com/read/27919332/effects-of-ionizing-radiation-on-the-mammalian-brain
#14
Daniela Hladik, Soile Tapio
Epidemiological studies on the atomic-bomb survivors, cancer survivors and occupational cohorts provide strong evidence for multifaceted damage to brain after ionizing radiation. Radiation-induced late effects may manifest as brain tumors or cognitive impairment. Decreased neurogenesis and differentiation, alteration in neural structure and synaptic plasticity as well as increased oxidative stress and inflammation are suggested to contribute to adverse effects in the brain. In addition to neural stems cells, several brain-specific mature cell types including endothelial and glial cells are negatively affected by ionizing radiation...
October 2016: Mutation Research
https://www.readbyqxmd.com/read/27919162/isotope-fractionation-of-sandy-soil-water-during-evaporation-an-experimental-study
#15
Wen-Bo Rao, Liang-Feng Han, Hong-Bing Tan, Shuai Wang
Soil samples containing water with known stable isotopic compositions were prepared. The soil water was recovered by using vacuum/heat distillation. The experiments were held under different conditions to control rates of water evaporation and water recovery. Recoveries, δ(18)O and δ(2)H values of the soil water were determined. Analyses of the data using a Rayleigh distillation model indicate that under the experimental conditions only loosely bound water is extractable in cases where the recovery is smaller than 100 %...
December 5, 2016: Isotopes in Environmental and Health Studies
https://www.readbyqxmd.com/read/27919075/land-use-intensification-causes-multitrophic-homogenization-of-grassland-communities
#16
Martin M Gossner, Thomas M Lewinsohn, Tiemo Kahl, Fabrice Grassein, Steffen Boch, Daniel Prati, Klaus Birkhofer, Swen C Renner, Johannes Sikorski, Tesfaye Wubet, Hartmut Arndt, Vanessa Baumgartner, Stefan Blaser, Nico Blüthgen, Carmen Börschig, Francois Buscot, Tim Diekötter, Leonardo Ré Jorge, Kirsten Jung, Alexander C Keyel, Alexandra-Maria Klein, Sandra Klemmer, Jochen Krauss, Markus Lange, Jörg Müller, Jörg Overmann, Esther Pašalić, Caterina Penone, David J Perović, Oliver Purschke, Peter Schall, Stephanie A Socher, Ilja Sonnemann, Marco Tschapka, Teja Tscharntke, Manfred Türke, Paul Christiaan Venter, Christiane N Weiner, Michael Werner, Volkmar Wolters, Susanne Wurst, Catrin Westphal, Markus Fischer, Wolfgang W Weisser, Eric Allan
Land-use intensification is a major driver of biodiversity loss. Alongside reductions in local species diversity, biotic homogenization at larger spatial scales is of great concern for conservation. Biotic homogenization means a decrease in β-diversity (the compositional dissimilarity between sites). Most studies have investigated losses in local (α)-diversity and neglected biodiversity loss at larger spatial scales. Studies addressing β-diversity have focused on single or a few organism groups (for example, ref...
November 30, 2016: Nature
https://www.readbyqxmd.com/read/27918965/saponaria-officinalis-l-extract-surface-active-properties-and-impact-on-environmental-bacterial-strains
#17
Wojciech Smułek, Agata Zdarta, Amanda Pacholak, Agnieszka Zgoła-Grześkowiak, Łukasz Marczak, Maciej Jarzębski, Ewa Kaczorek
Plant-derived surfactants are characterised by low toxicity, high biodegradability and environmental compatibility. They therefore have many applications; for instance, they can be used in bioremediation to accelerate biodegradation processes, especially of hydrophobic pollutants. This paper analyses the properties of an extract from Saponaria officinalis L. containing saponins and its impact on bacterial strains isolated from soil, as well as its potential for application in hydrocarbon bioremediation. The tested extract from Saponaria officinalis L...
November 27, 2016: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/27918629/new-routes-for-plant-iron-mining
#18
REVIEW
Catherine Curie, Stéphane Mari
I. II. III. IV. References SUMMARY: Plant iron (Fe) uptake relies to a large extent on the capacity of cells to control and extract Fe pools safely conserved in extracytoplasmic environments such as the apoplast and vacuoles, at least as much as on the transport machinery nested in plasma membranes. Recent studies on root and embryo Fe nutrition support this assertion and show that the root Fe-deficiency response also includes the dynamic use of a large Fe reservoir bound to cell wall components in the root apoplast, secretion in the apoplast of phenolic compounds of the coumarin family, which solubilize Fe in calcareous soils, and inhibition of suberization of endodermal cells in order to allow apoplastic and transcellular radial transport of Fe...
December 5, 2016: New Phytologist
https://www.readbyqxmd.com/read/27918615/top-down-control-of-methane-emission-and-nitrogen-cycling-by-waterfowl
#19
R Scott Winton, Curtis J Richardson
Aquatic herbivores impose top-down control on the structure of wetland ecosystems, but the biogeochemical consequences of herbivory on methane (CH4 ) and nitrogen (N) are poorly known. To investigate the top-down effects of waterfowl on wetland biogeochemistry, we implemented exclosure experiments in a major waterfowl overwintering wetland in the southeastern United States over two growing seasons. We found that herbivory inhibited the oxidation of CH4 , leading to a mean increase in emission by 230% over control plots, and prevented nitrification, as indicated by low nitrate availability and undetectable emissions of nitrous oxide...
November 4, 2016: Ecology
https://www.readbyqxmd.com/read/27918573/benchmarking-the-cost-per-person-of-mass-treatment-for-selected-neglected-tropical-diseases-an-approach-based-on-literature-review-and-meta-regression-with-web-based-software-application
#20
Christopher Fitzpatrick, Fiona M Fleming, Matthew Madin-Warburton, Timm Schneider, Filip Meheus, Kingsley Asiedu, Anthony W Solomon, Antonio Montresor, Gautam Biswas
BACKGROUND: Advocacy around mass treatment for the elimination of selected Neglected Tropical Diseases (NTDs) has typically put the cost per person treated at less than US$ 0.50. Whilst useful for advocacy, the focus on a single number misrepresents the complexity of delivering "free" donated medicines to about a billion people across the world. We perform a literature review and meta-regression of the cost per person per round of mass treatment against NTDs. We develop a web-based software application (https://healthy...
December 2016: PLoS Neglected Tropical Diseases
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