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https://www.readbyqxmd.com/read/28435812/scientometrics-on-public-health-research-in-iran-increase-of-area-studies-despite-embargoes-a-review-article
#1
REVIEW
Brice Poreau
BACKGROUND: Due to embargoes and sanctions from 1979 until 2015, impact on scientific research in Iran may be critical. Public health is the main example of this burning point. In this paper, the aim was to map the scientific research in public health in Iran until 2014 with area studies as well as networks of countries involved. METHODS: We used bibliographic analyses using VOS viewer software for network analysis during the period 1975-2014. Two databases were used: Web of Science and PubMed...
March 2017: Iranian Journal of Public Health
https://www.readbyqxmd.com/read/28426037/medicinal-plant-extracts-and-plant-derived-polyphenols-with-anthelmintic-activity-against-intestinal-nematodes
#2
REVIEW
V Spiegler, E Liebau, A Hensel
Covering: 2001 up to the end of 2016Polyphenols comprise a structurally diverse class of natural products. As the development of new anthelmintic drugs against soil-transmitted helminthiases is an urgent need and polyphenols are widely used in the treatment of nematode infections in traditional medicine and modern science, we summarize the state of knowledge in the period of mainly 2001 up to the end of 2016 on plant extracts with known polyphenolic composition and of defined polyphenols, mainly from the classes of condensed and hydrolysable tannins, flavonoids, and phenylpropanoids...
April 20, 2017: Natural Product Reports
https://www.readbyqxmd.com/read/28422534/in-situ-sampling-of-relative-dust-devil-particle-loads-and-their-vertical-grain-size-distributions
#3
Jan Raack, Dennis Reiss, Matthew R Balme, Kamal Taj-Eddine, Gian Gabriele Ori
During a field campaign in the Sahara Desert in southern Morocco, spring 2012, we sampled the vertical grain size distribution of two active dust devils that exhibited different dimensions and intensities. With these in situ samples of grains in the vortices, it was possible to derive detailed vertical grain size distributions and measurements of the lifted relative particle load. Measurements of the two dust devils show that the majority of all lifted particles were only lifted within the first meter (∼46...
April 19, 2017: Astrobiology
https://www.readbyqxmd.com/read/28414913/lca-harmonization-and-soil-science-rankings-results-on-food-waste-management-methods
#4
Jeffrey Morris, Sally L Brown, Matthew Cotton, H Scott Matthews
This study reviewed 147 life cycle studies, with 28 found suitable for harmonizing food waste management methods' climate and energy impacts. 80 scientific soil productivity studies were assessed to rank management method soil benefits. Harmonized climate impacts per kilogram (kg) food waste range from -0.20 kg of carbon dioxide equivalents (CO2e) for anaerobic digestion (AD) to 0.38 kg CO2e for landfill gas-to-energy (LFGTE). Aerobic composting (AC) is -0.10 kg CO2e. In-sink grinding (ISG) via a food waste disposer and flushing for management with other sewerage at a wastewater treatment plant emits 0...
April 17, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28411151/enabling-a-sustainable-and-prosperous-future-through-science-and-innovation-in-the-bioeconomy-at-agriculture-and-agri-food-canada
#5
REVIEW
Sara F Sarkar, Jacquelyne S Poon, Etienne Lepage, Lori Bilecki, Benoit Girard
Science and innovation are important components underpinning the agricultural and agri-food system in Canada. Canada's vast geographical area presents diverse, regionally specific requirements in addition to the 21st century agricultural challenges facing the overall sector. As the broader needs of the agricultural landscape have evolved and will continue to do so in the next few decades, there is a trend in place to transition towards a sustainable bioeconomy, contributing to reducing greenhouse gas emission and our dependency on non-renewable resources...
April 11, 2017: New Biotechnology
https://www.readbyqxmd.com/read/28391145/topsoil-moisture-mapping-using-geostatistical-techniques-under-different-mediterranean-climatic-conditions
#6
J F Martínez-Murillo, P Hueso-González, J D Ruiz-Sinoga
Soil mapping has been considered as an important factor in the widening of Soil Science and giving response to many different environmental questions. Geostatistical techniques, through kriging and co-kriging techniques, have made possible to improve the understanding of eco-geomorphologic variables, e.g., soil moisture. This study is focused on mapping of topsoil moisture using geostatistical techniques under different Mediterranean climatic conditions (humid, dry and semiarid) in three small watersheds and considering topography and soil properties as key factors...
April 6, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28386178/support-vector-machine-based-open-crop-model-sbocm-case-of-rice-production-in-china
#7
Ying-Xue Su, Huan Xu, Li-Jiao Yan
Existing crop models produce unsatisfactory simulation results and are operationally complicated. The present study, however, demonstrated the unique advantages of statistical crop models for large-scale simulation. Using rice as the research crop, a support vector machine-based open crop model (SBOCM) was developed by integrating developmental stage and yield prediction models. Basic geographical information obtained by surface weather observation stations in China and the 1:1000000 soil database published by the Chinese Academy of Sciences were used...
March 2017: Saudi Journal of Biological Sciences
https://www.readbyqxmd.com/read/28384186/75-years-of-dryland-science-trends-and-gaps-in-arid-ecology-literature
#8
Aaron C Greenville, Chris R Dickman, Glenda M Wardle
Growth in the publication of scientific articles is occurring at an exponential rate, prompting a growing need to synthesise information in a timely manner to combat urgent environmental problems and guide future research. Here, we undertake a topic analysis of dryland literature over the last 75 years (8218 articles) to identify areas in arid ecology that are well studied and topics that are emerging. Four topics-wetlands, mammal ecology, litter decomposition and spatial modelling, were identified as 'hot topics' that showed higher than average growth in publications from 1940 to 2015...
2017: PloS One
https://www.readbyqxmd.com/read/28366290/microbiome-tools-for-forensic-science
#9
REVIEW
Jessica L Metcalf, Zhenjiang Z Xu, Amina Bouslimani, Pieter Dorrestein, David O Carter, Rob Knight
Microbes are present at every crime scene and have been used as physical evidence for over a century. Advances in DNA sequencing and computational approaches have led to recent breakthroughs in the use of microbiome approaches for forensic science, particularly in the areas of estimating postmortem intervals (PMIs), locating clandestine graves, and obtaining soil and skin trace evidence. Low-cost, high-throughput technologies allow us to accumulate molecular data quickly and to apply sophisticated machine-learning algorithms, building generalizable predictive models that will be useful in the criminal justice system...
March 30, 2017: Trends in Biotechnology
https://www.readbyqxmd.com/read/28361600/application-of-drifts-13-c-nmr-and-py-mbms-to-characterize-the-effects-of-soil-science-oxidation-assays-on-soil-organic-matter-composition-in-a-mollic-xerofluvent
#10
Andrew J Margenot, Francisco J Calderón, Kimberly A Magrini, Robert J Evans
Chemical oxidations are routinely employed in soil science to study soil organic matter (SOM), and their interpretation could be improved by characterizing oxidation effects on SOM composition with spectroscopy. We investigated the effects of routinely employed oxidants on SOM composition in a Mollic Xerofluvent representative of intensively managed agricultural soils in the California Central Valley. Soil samples were subjected to oxidation by potassium permanganate (KMnO4), sodium hypochlorite (NaOCl), and hydrogen peroxide (H2O2)...
January 1, 2017: Applied Spectroscopy
https://www.readbyqxmd.com/read/28345581/potential-of-biosynthesized-silver-nanoparticles-using-stenotrophomonas-sp-bhu-s7-mtcc-5978-for-management-of-soil-borne-and-foliar-phytopathogens
#11
Sandhya Mishra, Braj Raj Singh, Alim H Naqvi, H B Singh
Stenotrophomonas sp. is emerging as a popular microbe of global concern with various potential ecological roles. Biosynthesis of gold and silver nanoparticles (AgNPs) using this bacterial strain has shown promising applications in life sciences. However, there is no report on efficient agricultural applications of biosynthesized AgNPs using Stenotrophomonas sp. In this regard, successful biosynthesis of AgNPs using Stenotrophomonas sp. BHU-S7 (MTCC 5978) was monitored by Uv-visible spectrum showing surface plasmon resonance (SPR) peak at 440 nm...
March 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28342419/incorporating-denitrification-decomposition-method-to-estimate-field-emissions-for-life-cycle-assessment
#12
Yelin Deng, Dimos Paraskevas, Shi-Jie Cao
This study focuses on a detailed Life Cycle Assessment (LCA) for flax cultivation in Northern France. Nitrogen related field emissions are derived both from a process-oriented DeNitrification-DeComposition (DNDC) method and the generic Intergovernmental Panel on Climate Change (IPCC) method. Since the IPCC method is synthesised from field measurements at sites with various soil types, climate conditions, and crops, it contains significant uncertainties. In contrast, the outputs from the DNDC method are considered as more site specific as it is built according to complex models of soil science...
March 22, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28335574/proof-of-concept-development-of-snow-liquid-water-content-profiler-using-cs650-reflectometers-at-caribou-me-usa
#13
Carlos L Pérez Díaz, Jonathan Muñoz, Tarendra Lakhankar, Reza Khanbilvardi, Peter Romanov
The quantity of liquid water in the snowpack defines its wetness. The temporal evolution of snow wetness's plays a significant role in wet-snow avalanche prediction, meltwater release, and water availability estimations and assessments within a river basin. However, it remains a difficult task and a demanding issue to measure the snowpack's liquid water content (LWC) and its temporal evolution with conventional in situ techniques. We propose an approach based on the use of time-domain reflectometry (TDR) and CS650 soil water content reflectometers to measure the snowpack's LWC and temperature profiles...
March 21, 2017: Sensors
https://www.readbyqxmd.com/read/28301475/multiple-ecosystem-services-in-a-working-landscape
#14
Danny J Eastburn, Anthony T O'Geen, Kenneth W Tate, Leslie M Roche
Policy makers and practitioners are in need of useful tools and models for assessing ecosystem service outcomes and the potential risks and opportunities of ecosystem management options. We utilize a state-and-transition model framework integrating dynamic soil and vegetation properties to examine multiple ecosystem services-specifically agricultural production, biodiversity and habitat, and soil health-across human created vegetation states in a managed oak woodland landscape in a Mediterranean climate. We found clear tradeoffs and synergies in management outcomes...
2017: PloS One
https://www.readbyqxmd.com/read/28251452/valuation-of-ecosystem-services-of-commercial-shrub-willow-salix-spp-woody-biomass-crops
#15
Alison Bressler, Philippe Vidon, Paul Hirsch, Timothy Volk
The development of shrub willow as a bioenergy feedstock contributes to renewable energy portfolios in many countries with temperate climates and marginal croplands due to excessive moisture. However, to fully understand the potential of shrub willow as an alternative crop on marginal cropland, more research is needed to understand the potential of shrub willow for providing a variety of ecosystem services. At the same time, there is much need for research developing strategies to value ecosystem services beyond conventional valuation systems (e...
April 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28230900/x-ray-diffraction-and-rietveld-refinement-in-deferrified-clays-for-forensic-science
#16
Luis V Prandel, Vander de F Melo, André M Brinatti, Sérgio da C Saab, Fábio A S Salvador
Soil vestiges might provide information about a crime scene. The Rietveld method with X-ray diffraction data (RM-XRD) is a nondestructive technique that makes it possible to characterize minerals present in the soils. Soil clays from the metropolitan region of Curitiba (Brazil) were submitted to DCB treatment and analyzed using XRD with CuKα radiation in the step-scan mode (0.02° 2θ/5 s). The GSAS+EXPGUI software was used for RM refinement. The RM-XRD results, together with the principal component analysis (PCA) (52...
February 23, 2017: Journal of Forensic Sciences
https://www.readbyqxmd.com/read/28230202/ecosystem-composition-controls-the-fate-of-rare-earth-elements-during-incipient-soil-genesis
#17
Dragos G Zaharescu, Carmen I Burghelea, Katerina Dontsova, Jennifer K Presler, Raina M Maier, Travis Huxman, Kenneth J Domanik, Edward A Hunt, Mary K Amistadi, Emily E Gaddis, Maria A Palacios-Menendez, Maria O Vaquera-Ibarra, Jon Chorover
The rare earth elements (REE) are increasingly important in a variety of science and economic fields, including (bio)geosciences, paleoecology, astrobiology, and mining. However, REE distribution in early rock-microbe-plant systems has remained elusive. We tested the hypothesis that REE mass-partitioning during incipient weathering of basalt, rhyolite, granite and schist depends on the activity of microbes, vascular plants (Buffalo grass), and arbuscular mycorrhiza. Pore-water element abundances revealed a rapid transition from abiotic to biotic signatures of weathering, the latter associated with smaller aqueous loss and larger plant uptake...
February 23, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28229194/screening-level-assessment-of-metal-concentrations-in-streambed-sediments-and-floodplain-soils-within-the-grand-lake-watershed-in-northeastern-oklahoma-usa
#18
Ean M Garvin, Cas F Bridge, Meredith S Garvin
Metal releases have been received by the Grand Lake watershed from the Tri-State Mining District (TSMD) since the mid 1800s. To address data gaps in metal distributions in the Oklahoma portion of the watershed, streambed sediment and floodplain soil was sampled on various streams. The <63-µm fraction was analyzed for Cd, Pb, and Zn concentrations by portable X-ray fluorescence spectroscopy and inductively coupled plasma-mass spectrometry. Mean metal concentration results at reference transects indicated that background sediment/soil concentrations for Cd, Pb, and Zn within the watershed were 0...
April 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28215809/topological-data-analysis-tda-applied-to-reveal-pedogenetic-principles-of-european-topsoil-system
#19
Aleksandar Savic, Gergely Toth, Ludovic Duponchel
Recent developments in applied mathematics are bringing new tools that are capable to synthesize knowledge in various disciplines, and help in finding hidden relationships between variables. One such technique is topological data analysis (TDA), a fusion of classical exploration techniques such as principal component analysis (PCA), and a topological point of view applied to clustering of results. Various phenomena have already received new interpretations thanks to TDA, from the proper choice of sport teams to cancer treatments...
May 15, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28214519/detection-and-quantification-of-soil-transmitted-helminths-in-environmental-samples-a-review-of-current-state-of-the-art-and-future-perspectives
#20
REVIEW
Isaac Dennis Amoah, Gulshan Singh, Thor Axel Stenström, Poovendhree Reddy
It is estimated that over a billion people are infected with soil-transmitted helminths (STHs) globally with majority occurring in tropical and subtropical regions of the world. The roundworm (Ascaris lumbricoides), whipworm (Trichuris trichiura), and hookworms (Ancylostoma duodenale and Necator americanus) are the main species infecting people. These infections are mostly gained through exposure to faecally contaminated water, soil or contaminated food and with an increase in the risk of infections due to wastewater and sludge reuse in agriculture...
May 2017: Acta Tropica
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