keyword
MENU ▼
Read by QxMD icon Read
search

Geology

keyword
https://www.readbyqxmd.com/read/28334453/not-in-my-backyard-ccs-sites-and-public-perception-of-ccs
#1
Carola Braun
Carbon capture and storage (CCS) is a technology that counteracts climate change by capturing atmospheric emissions of CO2 from human activities, storing them in geological formations underground. However, CCS also involves major risks and side effects, and faces strong public opposition. The whereabouts of 408 potential CCS sites in Germany were released in 2011. Using detailed survey data on the public perception of CCS, this study quantifies how living close to a potential storage site affects the acceptance of CCS...
March 23, 2017: Risk Analysis: An Official Publication of the Society for Risk Analysis
https://www.readbyqxmd.com/read/28334420/evaluation-of-hydraulic-properties-of-aquitards-using-earthquake-triggered-groundwater-variation
#2
Shih-Jung Wang, Kuo-Chin Hsu, Chein-Lee Wang, Wen-Chi Lai, Liang-Tzu Hsu
The hydraulic properties of aquitards are not easily obtained because monitoring wells are usually installed in aquifers for groundwater resources management. Earthquake-induced crust stress (strain) triggers groundwater level variations over a short period of time in a large area. These groundwater anomalies can be used to investigate aquifer systems. This study uses a poroelastic model to fit the postseismic variations of groundwater level triggered by the Chi-Chi earthquake to evaluate the hydraulic properties of aquitards in the Jhoushuei River alluvial fan (JRAF), Taiwan...
March 23, 2017: Ground Water
https://www.readbyqxmd.com/read/28334283/the-microbiology-of-oil-sands-tailings-past-present-future
#3
Julia M Foght, Lisa M Gieg, Tariq Siddique
Surface mining of enormous oil sands deposits in northeastern Alberta, Canada since 1967 has contributed greatly to Canada's economy but has also received negative international attention due largely to environmental concerns and challenges. Not only have microbes profoundly affected the composition and behaviour of this petroleum resource over geological time, they currently influence the management of semi-solid tailings in oil sands tailing ponds (OSTP) and tailings reclamation. Historically, microbial impacts on OSTP were generally discounted but next-generation sequencing and biogeochemical studies have revealed unexpectedly diverse indigenous communities and expanded our fundamental understanding of anaerobic microbial functions...
March 9, 2017: FEMS Microbiology Ecology
https://www.readbyqxmd.com/read/28333287/evolution-of-rosaceae-fruit-types-based-on-nuclear-phylogeny-in-the-context-of-geological-times-and-genome-duplication
#4
(no author information available yet)
No abstract text is available yet for this article.
February 22, 2017: Molecular Biology and Evolution
https://www.readbyqxmd.com/read/28331531/an-integrative-systematic-framework-helps-to-reconstruct-skeletal-evolution-of-glass-sponges-porifera-hexactinellida
#5
Martin Dohrmann, Christopher Kelley, Michelle Kelly, Andrzej Pisera, John N A Hooper, Henry M Reiswig
BACKGROUND: Glass sponges (Class Hexactinellida) are important components of deep-sea ecosystems and are of interest from geological and materials science perspectives. The reconstruction of their phylogeny with molecular data has only recently begun and shows a better agreement with morphology-based systematics than is typical for other sponge groups, likely because of a greater number of informative morphological characters. However, inconsistencies remain that have far-reaching implications for hypotheses about the evolution of their major skeletal construction types (body plans)...
2017: Frontiers in Zoology
https://www.readbyqxmd.com/read/28331386/phylogenetic-analysis-of-the-genus-laparocerus-with-comments-on-colonisation-and-diversification-in-macaronesia-coleoptera-curculionidae-entiminae
#6
Antonio Machado, Eduardo Rodríguez-Expósito, Mercedes López, Mariano Hernández
The flightless Entiminae weevil genus Laparocerus is the species-richest genus, with 237 species and subspecies, inhabiting Macaronesia (Madeira archipelago, Selvagens, Canary Islands) and the continental 'Macaronesian enclave' in Morocco (one single polytypic species). This is the second contribution to gain insight of the genus and assist in its systematic revision with a mitochondrial phylogenetic analysis. It centres on the Canarian clade, adding the 12S rRNA gene to the combined set of COII and 16S rRNA used in our first contribution on the Madeiran clade (here re-analysed)...
2017: ZooKeys
https://www.readbyqxmd.com/read/28328040/purification-of-baso4-precipitate-contaminated-with-organic-matter-for-oxygen-isotope-measurements-%C3%AE-18-o-and-%C3%AE-17-o
#7
Luhua Xie, Baruch Spiro, Gangjian Wei
RATIONALE: Sulfate precipitates are often contaminated with nitrates and organic materials (OM), which reduce the precision and accuracy of measurements of δ(18) O and Δ(17) O values in the sulfate. Although nitrates can be effectively removed using diethylenetriaminepentaacetic acid solution, removing OM from the precipitates is often difficult. One effective approach is to heat powdered precipitates to high temperatures. In this study, the effect of this procedure on the δ(18) O and Δ(17) O values of BaSO4 precipitate was fully examined...
July 30, 2016: Rapid Communications in Mass Spectrometry: RCM
https://www.readbyqxmd.com/read/28324690/e-coli-interactions-adhesion-and-transport-in-alumino-silica-clays
#8
Houzhen Wei, Guang Yang, Boya Wang, Runwei Li, Gang Chen, Zhenze Li
Bacterial adhesion and transport in the geological formation are controlled by their mutual complex interactions, which have been quantified by the traditional and extended Derjaguin-Landau-Verwey-Overbeek (DLVO) theory as well as direct atomic force microscopy (AFM) measurements. In this research, the DLVO forces calculated based on the independently determined bacterial and porous media surface thermodynamic properties were compared with those of AFM measurements. Although differences in the order of several magnitudes existed, forces obtained from both ways could explain the observations of E...
March 8, 2017: Colloids and Surfaces. B, Biointerfaces
https://www.readbyqxmd.com/read/28324685/monitoring-and-descriptive-analysis-of-radon-in-relation-to-seismic-activity-of-northern-pakistan
#9
Zeeshan Jilani, Tahir Mehmood, Aftab Alam, Muhammad Awais, Talat Iqbal
Earthquakes are one of the major causes of natural disasters and its forecasting is challenging task. Some precursory phenomenon exists in theory in relation to earthquakes occurrence. The emission of radioactive gas named 'radon' before the earthquakes is a potential earthquake precursory candidate. The study aims to monitor and to analyze the radon in relation to seismic activity in Northern Pakistan. For this purpose RTM-2200 has been used to monitor the changes in radon concentration from August 01, 2014 to January 31, 2015 in Northern Pakistan...
March 16, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28323483/taphonomy-of-microbial-biosignatures-in-spring-deposits-a-comparison-of-modern-quaternary-and-jurassic-examples
#10
Sally L Potter-McIntyre, Jason Williams, Charity Phillips-Lander, Laura O'Connell
On Earth, microorganisms commonly enhance mineral precipitation and mediate mineralogical and chemical compositions of resulting deposits, particularly at spring systems. However, preservation of any type of microbial fossil or chemical or textural biosignature depends on the degree of alteration during diagenesis and factors such as exposure to diagenetic fluids. Little is known about the transformation of biosignatures during diagenesis over geologic time. Ten Mile Graben, Utah, USA, hosts a cold spring system that is an exceptional site for evaluation of diagenetic alteration of biosignatures because of the presence of modern springs with actively precipitating microbial mats and a series of progressively older tufa terraces (<400 ka) preserved in the area from the same spring system...
March 2017: Astrobiology
https://www.readbyqxmd.com/read/28323481/the-emergence-of-life-as-a-first-order-phase-transition
#11
Cole Mathis, Tanmoy Bhattacharya, Sara Imari Walker
It is well known that life on Earth alters its environment over evolutionary and geological timescales. An important open question is whether this is a result of evolutionary optimization or a universal feature of life. In the latter case, the origin of life would be coincident with a shift in environmental conditions. Here we present a model for the emergence of life in which replicators are explicitly coupled to their environment through the recycling of a finite supply of resources. The model exhibits a dynamic, first-order phase transition from nonlife to life, where the life phase is distinguished by selection on replicators...
March 2017: Astrobiology
https://www.readbyqxmd.com/read/28323053/species-delimitation-and-phylogenetic-reconstruction-of-the-sinipercids-perciformes-sinipercidae-based-on-target-enrichment-of-thousands-of-nuclear-coding-sequences
#12
Shuli Song, Jinliang Zhao, Chenhong Li
The sinipercids are freshwater fishes endemic to East Asia, mainly in China. Phylogenetic studies on the sinipercids have made great progress in the last decades, but interspecific relationships and evolutionary history of the sinipercids remain unresolved. Lack of distinctive morphological characters leads to problems in validating of some species, such as Siniperca loona. Moreover, genetic data are needed to delimitate species pairs with explicit hypothesis testing, such as in S. chuatsi vs. S. kneri and Coreoperca whiteheadi vs...
March 17, 2017: Molecular Phylogenetics and Evolution
https://www.readbyqxmd.com/read/28317232/soil-parent-material-a-major-driver-of-plant-nutrient-limitations-in-terrestrial-ecosystems
#13
Laurent Augusto, David L Achat, Mathieu Jonard, David Vidal, Bruno Ringeval
Because the capability of terrestrial ecosystems to fix carbon is constrained by nutrient availability, understanding how nutrients limit plant growth is a key contemporary question. However, what drives nutrient limitations at global scale remains to be clarified. Using global data on plant growth, plant nutritive status, and soil fertility, we investigated to which extent soil parent materials explain nutrient limitations. We found that N limitation was not linked to soil parent materials, but was best explained by climate: ecosystems under harsh (i...
March 19, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28315390/quantifying-the-dynamic-density-driven-convection-in-high-permeability-packed-beds
#14
Ying Teng, Lanlan Jiang, Yingting Fan, Yu Liu, Dayong Wang, Abuliti Abudula, Yongchen Song
The density driven convection phenomenon is expected to have a significant and positive role in CO2 geological storage capacity and safety. The onset and development of density-driven convective on the core scale is critical to understand the mass transfer mechanism. In this paper, laboratory experiments were conducted to investigate the density-driven convective in a vertical tube. The deuterium oxide (D2O)/manganese chloride (MnCl2) water solution in water or brine were as an analog for CO2-rich brine in original brine...
March 14, 2017: Magnetic Resonance Imaging
https://www.readbyqxmd.com/read/28303943/increased-chemical-weathering-during-the-deglacial-to-mid-holocene-summer-monsoon-intensification
#15
Pavan Miriyala, N P Sukumaran, B Nagender Nath, P B Ramamurty, A V Sijinkumar, B Vijayagopal, V Ramaswamy, Tyson Sebastian
Chemical weathering and the ensuing atmospheric carbon dioxide consumption has long been considered to work on geological time periods until recently when some modelling and natural records have shown that the weathering-related CO2 consumption can change at century to glacial-interglacial time scale. Last glacial to interglacial transition period is a best test case to understand the interplay between Pco2-temperature-chemical weathering when a pulse of rapid chemical weathering was initiated. Here we show, from a high resolution 54 ka record from the Andaman Sea in the northern Indian Ocean, that the chemical weathering responds to deglacial to mid-Holocene summer monsoon intensification in the Myanmar watersheds...
March 17, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28303615/rare-earth-elements-and-select-actinoids-in-the-canadian-house-dust-study
#16
Pat E Rasmussen, Christine Levesque, Marc Chénier, H David Gardner
Nationally representative baseline data are presented for rare earth elements (REE), plus thorium (Th) and uranium (U) in house dust sampled from 1025 urban homes, in units of concentrations (μg g(-1) ), loadings (μg m(-2) ) and loading rates (ng m(-2) day(-1) ). Spearman rank correlations indicate that, in addition to outdoor sources, consumer products and building materials can influence indoor dust concentrations of REE, Th and U. Correlations (p <0.01) with numbers of occupants, dogs and cats suggest soil track-in...
March 17, 2017: Indoor Air
https://www.readbyqxmd.com/read/28303182/determining-the-factors-affecting-the-distribution-of-muscari-latifolium-an-endemic-plant-of-turkey-and-a-mapping-species-distribution-model
#17
Hatice Yilmaz, Osman Yalçın Yilmaz, Yaşar Feyza Akyüz
Species distribution modeling was used to determine factors among the large predictor candidate data set that affect the distribution of Muscari latifolium, an endemic bulbous plant species of Turkey, to quantify the relative importance of each factor and make a potential spatial distribution map of M. latifolium. Models were built using the Boosted Regression Trees method based on 35 presence and 70 absence records obtained through field sampling in the Gönen Dam watershed area of the Kazdağı Mountains in West Anatolia...
February 2017: Ecology and Evolution
https://www.readbyqxmd.com/read/28302856/building-archean-cratons-from-hadean-mafic-crust
#18
Jonathan O'Neil, Richard W Carlson
Geologic processing of Earth's surface has removed most of the evidence concerning the nature of Earth's first crust. One region of ancient crust is the Hudson Bay terrane of northeastern Canada, which is mainly composed of Neoarchean felsic crust and forms the nucleus of the Northeastern Superior Province. New data show these ~2.7-billion-year-old rocks to be the youngest to yield variability in neodymium-142 ((142)Nd), the decay product of short-lived samarium-146 ((146)Sm). Combined (146-147)Sm-(142-143)Nd data reveal that this large block of Archean crust formed by reworking of much older (>4...
March 17, 2017: Science
https://www.readbyqxmd.com/read/28302339/fundamentals-of-the-nea-thermochemical-database-and-its-influence-over-national-nuclear-programs-on-the-performance-assessment-of-deep-geological-repositories
#19
Maria-Eleni Ragoussi, Davide Costa
For the last 30 years, the NEA Thermochemical Database (TDB) Project (www.oecd-nea.org/dbtdb/) has been developing a chemical thermodynamic database for elements relevant to the safety of radioactive waste repositories, providing data that are vital to support the geochemical modeling of such systems. The recommended data are selected on the basis of strict review procedures and are characterized by their consistency. The results of these efforts are freely available, and have become an international point of reference in the field...
March 14, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28301759/ice-surfaces
#20
Mary Jane Shultz
Ice is a fundamental solid with important environmental, biological, geological, and extraterrestrial impact. The stable form of ice at atmospheric pressure is hexagonal ice, Ih Despite its prevalence, Ih remains an enigmatic solid, in part due to challenges in preparing samples for fundamental studies. Surfaces of ice present even greater challenges. Recently developed methods for preparation of large single-crystal samples make it possible to reproducibly prepare any chosen face to address numerous fundamental questions...
March 15, 2017: Annual Review of Physical Chemistry
keyword
keyword
31664
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"