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https://www.readbyqxmd.com/read/28345704/atomic-layer-deposition-of-nickel-cobalt-spinel-thin-films
#1
D J Hagen, T S Tripathi, M Karppinen
We report the atomic layer deposition (ALD) of high-quality crystalline thin films of the spinel-oxide system (Co1-xNix)3O4. These spinel oxides are ferrimagnetic p-type semiconductors, and promising material candidates for several applications ranging from photovoltaics and spintronics to thermoelectrics. The spinel phase is obtained for Ni contents exceeding the x = 0.33 limit for bulk samples. It is observed that the electrical resistivity decreases continuously with x while the magnetic moment increases up to x = 0...
March 27, 2017: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/28345044/continental-igneous-rock-composition-a-major-control-of-past-global-chemical-weathering
#2
Clément P Bataille, Amy Willis, Xiao Yang, Xiao-Ming Liu
The composition of igneous rocks in the continental crust has changed throughout Earth's history. However, the impact of these compositional variations on chemical weathering, and by extension on seawater and atmosphere evolution, is largely unknown. We use the strontium isotope ratio in seawater [((87)Sr/(86)Sr)seawater] as a proxy for chemical weathering, and we test the sensitivity of ((87)Sr/(86)Sr)seawater variations to the strontium isotopic composition ((87)Sr/(86)Sr) in igneous rocks generated through time...
March 2017: Science Advances
https://www.readbyqxmd.com/read/28343041/characterization-of-regional-cold-hydrothermal-inflows-enriched-in-arsenic-and-associated-trace-elements-in-the-southern-part-of-the-duero-basin-spain-by-multivariate-statistical-analysis
#3
Elena Giménez-Forcada, Marisol Vega-Alegre, Susana Timón-Sánchez
Naturally occurring arsenic in groundwater exceeding the limit for potability has been reported along the southern edge of the Cenozoic Duero Basin (CDB) near its contact with the Spanish Central System (SCS). In this area, spatial variability of arsenic is high, peaking at 241μg/L. Forty-seven percent of samples collected contained arsenic above the maximum allowable concentration for drinking water (10μg/L). Correlations of As with other hydrochemical variables were investigated using multivariate statistical analysis (Hierarchical Cluster Analysis, HCA and Principal Component Analysis, PCA)...
March 23, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28342281/incorporating-in-situ-habitat-patchiness-in-site-selection-models-reveals-that-site-fidelity-is-not-always-a-consequence-of-animal-choice
#4
Aline S Martinez, Eduardo V Queiroz, Mitch Bryson, Maria Byrne, Ross A Coleman
1.Understanding site fidelity is important in animal ecology, but evidence is lacking that this behaviour is due to an animal choosing a specific location. To discern site selection behaviour it is necessary to consider the spatial distribution of habitats that animals can occupy within a landscape. Tracking animals and defining clear habitat boundaries, however, is often difficult. 2.We use in situ habitat distribution data and animal movement simulations to investigate behavioural choice in site fidelity patterns...
March 25, 2017: Journal of Animal Ecology
https://www.readbyqxmd.com/read/28342010/aridity-promotes-bet-hedging-via-delayed-hatching-a-case-study-with-two-temporary-pond-crustaceans-along-a-latitudinal-gradient
#5
Tom Pinceel, Bram Vanschoenwinkel, Wouter Hawinkel, Karen Tuytens, Luc Brendonck
Climate change does affect not only average rainfall and temperature but also their variation, which can reduce the predictability of suitable conditions for growth and reproduction. This situation is problematic for inhabitants of temporary waters whose reproductive success depends on rainfall and evaporation that determine the length of the aquatic phase. For organisms with long-lived dormant life stages, bet hedging models suggest that a fraction of these should stay dormant during each growing season to buffer against the probability of total reproductive failure in variable environments...
March 24, 2017: Oecologia
https://www.readbyqxmd.com/read/28341961/from-smooth-to-rough-from-water-to-air-the-intertidal-habitat-of-northern-clingfish-gobiesox-maeandricus
#6
Petra Ditsche, Madeline Hicks, Lisa Truong, Christina Linkem, Adam Summers
The Northern clingfish is a small, Eastern North Pacific fish that can attach to rough, fouled rocks in the intertidal. Their ability to attach to surfaces has been measured previously in the laboratory, and in this study, we show the roughness and fouling of the natural habitat of these fish. We introduce a new method for measuring surface roughness of natural substrates with time-limited accessibility. We expect this method to be broadly applicable in studies of animal/substrate surface interactions in habitats difficult to characterize...
April 2017: Die Naturwissenschaften
https://www.readbyqxmd.com/read/28341833/large-scale-crustal-block-extrusion-during-late-alpine-collision
#7
Marco Herwegh, Alfons Berger, Roland Baumberger, Philip Wehrens, Edi Kissling
The crustal-scale geometry of the European Alps has been explained by a classical subduction-scenario comprising thrust-and-fold-related compressional wedge tectonics and isostatic rebound. However, massive blocks of crystalline basement (External Crystalline Massifs) vertically disrupt the upper-crustal wedge. In the case of the Aar massif, top basement vertically rises for >12 km and peak metamorphic temperatures increase along an orogen-perpendicular direction from 250 °C-450 °C over horizontal distances of only <15 km (Innertkirchen-Grimselpass), suggesting exhumation of midcrustal rocks with increasing uplift component along steep vertical shear zones...
March 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28341479/a-method-for-independent-modelling-in-support-of-regulatory-review-of-dose-assessments
#8
Björn Dverstorp, Shulan Xu
Several countries consider geological disposal facilities as the preferred option for spent nuclear fuel due to their potential to provide isolation from the surface environment on very long timescales. In 2011 the Swedish Nuclear Fuel & Waste Management Co. (SKB) submitted a license application for construction of a spent nuclear fuel repository. The disposal method involves disposing spent fuel in copper canisters with a cast iron insert at about 500 m depth in crystalline basement rock, and each canister is surrounded by a buffer of swelling bentonite clay...
March 22, 2017: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/28340228/dual-immunostain-with-satb2-and-ck20-differentiates-appendiceal-mucinous-neoplasms-from-ovarian-mucinous-neoplasms
#9
Zaibo Li, Rachel Roth, Jonathan B Rock, Amy Lehman, William L Marsh, Adrian Suarez, Wendy L Frankel
Objectives: Determination of the primary site of origin for mucinous neoplasms identified in the peritoneal and/or pelvic cavities may be challenging, with major differential diagnoses including appendiceal mucinous neoplasm (AMN) and ovarian mucinous neoplasm (OMN). Special AT-rich sequence binding protein 2 (SATB2) has been shown to be highly selectively expressed in the lower gastrointestinal tract, including the appendix. Methods: We investigated the utility of a dual stain (DS) with SATB2 or caudal type homeobox 2 (CDX2) and cytokeratin 20 (CK20) or villin in distinguishing AMNs from OMNs...
March 18, 2017: American Journal of Clinical Pathology
https://www.readbyqxmd.com/read/28339925/effects-of-different-storage-time-on-hatching-results-and-some-egg-quality-characteristics-of-rock-partridge-a-graeca-management-and-production
#10
S Günhan, K Kirikçi
In this research, partridge eggs were stored during zero to 7, 8 to 14, 15 to 21, 22 to 28, 29 to 35 and 36 to 42 d, respectively. The effect of different egg storage periods on egg protein and moisture rates, mineral contents, and some egg quality and hatching characteristics were investigated. The extension of egg storage times didn't affect the external quality features like shell weight, shell thickness, and albumen rate, but it affected the yolk weight, yolk index, albumen index, and Haugh unit (P < 0...
March 3, 2017: Poultry Science
https://www.readbyqxmd.com/read/28339818/refining-success-of-cardiac-resynchronization-therapy-using-a-simple-score-predicting-the-amount-of-reverse-ventricular-remodelling-results-from-the-markers-and-response-to-crt-marc-study
#11
Alexander H Maass, Kevin Vernooy, Sofieke C Wijers, Jetske van 't Sant, Maarten J Cramer, Mathias Meine, Cornelis P Allaart, Frederik J De Lange, Frits W Prinzen, Bart Gerritse, Erna Erdtsieck, Coert O S Scheerder, Michael R S Hill, Marcoen Scholten, Mariëlle Kloosterman, Iris A H Ter Horst, Adriaan A Voors, Marc A Vos, Michiel Rienstra, Isabelle C Van Gelder
Aims: Cardiac resynchronization therapy (CRT) reduces morbidity and mortality in systolic heart failure patients with ventricular conduction delay. Variability of individual response to CRT warrants improved patient selection. The Markers and Response to CRT (MARC) study was designed to investigate markers related to response to CRT. Methods and results: We prospectively studied the ability of 11 clinical, 11 electrocardiographic, 4 echocardiographic, and 16 blood biomarkers to predict CRT response in 240 patients...
February 27, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28339348/geological-occurrence-mineralogical-characterization-and-risk-assessment-of-potentially-carcinogenic-erionite-in-italy
#12
Matteo Giordani, Michele Mattioli, Paolo Ballirano, Alessandro Pacella, Marco Cenni, Matteo Boscardin, Laura Valentini
Erionite is a zeolite representing a well-known health hazard. In fact, exposure of humans to its fibers has been unequivocally associated with occurrence of malignant mesothelioma. For this reason, a multi-methodological approach, based upon field investigation, morphological characterization, scanning electron microscopy (SEM)/energy-dispersive spectroscopy (EDS) chemical analysis, and structure refinement through X-ray powder diffraction (XRPD), was applied to different samples of potentially carcinogenic erionite from Northern Italy...
2017: Journal of Toxicology and Environmental Health. Part B, Critical Reviews
https://www.readbyqxmd.com/read/28339093/rock-inhibition-as-a-potential-therapeutic-target-involved-in-apoptosis-in-hemangioma
#13
Ming-Ke Qiu, Shu-Qing Wang, Chang Pan, Yang Wang, Zhi-Wei Quan, Ying-Bin Liu, Jing-Min Ou
Gene expression was examined in hemangiomas (HA), benign, birthmark-like tumors occurring in infancy, and confirmed in HA-derived endothelial cells (HDEC), for which cell proliferation and apoptosis were also assessed. Protein and mRNA accumulation of Rho-associated protein kinase (ROCK), vascular endothelial growth factor (VEGF), Ki-67 and proliferating cell nuclear antigen was significantly higher in proliferating phase HAs than in involuting phase HAs. In contrast, p53 and caspase-3 exhibited higher levels of accumulation in involuting than proliferating HAs...
March 21, 2017: Oncology Reports
https://www.readbyqxmd.com/read/28339042/immunomodulatory-effects-in-workers-exposed-to-naturally-occurring-asbestos-fibers
#14
Caterina Ledda, Chiara Costa, Serena Matera, Beatrice Puglisi, Valentina Costanzo, Massimo Bracci, Concettina Fenga, Venerando Rapisarda, Carla Loreto
Natural asbestiform fibers are defined 'naturally occurring asbestos' (NOA) and refer to the mineral as a natural component of soils or rocks. The release of NOA fibers into the air from rocks or soils by routine human activities or natural weathering processes represents a risk for human beings. Fluoro-edenite (FE) is a NOA fiber detected in the benmoreitic lava in the area of Biancavilla, South-west slope of Mt. Etna. The aim of the present study was to investigate FE immunotoxicity pathways in a group of 38 occupationally exposed construction workers, in order to find any biological markers of its effect...
March 24, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28337624/geochemical-behavior-of-ultramafic-waste-rocks-with-carbon-sequestration-potential-a-case-study-of-the-dumont-nickel-project-amos-qu%C3%A3-bec
#15
El Hadji Babacar Kandji, Benoit Plante, Bruno Bussière, Georges Beaudoin, Pierre-Philippe Dupont
The geochemical behavior of ultramafic waste rocks and the effect of carbon sequestration by these waste rocks on the water drainage quality were investigated using laboratory-scale kinetic column tests on samples from the Dumont Nickel Project (RNC Minerals, QC, Canada). The test results demonstrated that atmospheric CO2 dissolution induced the weathering of serpentine and brucite within the ultramafic rocks, generating high concentrations of Mg and HCO3(-) with pH values ranging between 9 and 10 in the leachates that promote the precipitation of secondary Mg carbonates...
March 23, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/28337070/genomic-methods-and-microbiological-technologies-for-profiling-novel-and-extreme-environments-for-the-extreme-microbiome-project-xmp
#16
Scott Tighe, Ebrahim Afshinnekoo, Tara M Rock, Ken McGrath, Noah Alexander, Alexa McIntyre, Sofia Ahsanuddin, Daniela Bezdan, Stefan J Green, Samantha Joye, Sarah Stewart Johnson, Don A Baldwin, Nathan Bivens, Nadim Ajami, Joseph R Carmical, Ian Charold Herriott, Rita Colwell, Mohamed Donia, Jonathan Foox, Nick Greenfield, Tim Hunter, Jessica Hoffman, Joshua Hyman, Ellen Jorgensen, Diana Krawczyk, Jodie Lee, Shawn Levy, Natàlia Garcia-Reyero, Matthew Settles, Kelley Thomas, Felipe Gómez, Lynn Schriml, Nikos Kyrpides, Elena Zaikova, Jon Penterman, Christopher E Mason
The Extreme Microbiome Project (XMP) is a project launched by the Association of Biomolecular Resource Facilities Metagenomics Research Group (ABRF MGRG) that focuses on whole genome shotgun sequencing of extreme and unique environments using a wide variety of biomolecular techniques. The goals are multifaceted, including development and refinement of new techniques for the following: 1) the detection and characterization of novel microbes, 2) the evaluation of nucleic acid techniques for extremophilic samples, and 3) the identification and implementation of the appropriate bioinformatics pipelines...
March 10, 2017: Journal of Biomolecular Techniques: JBT
https://www.readbyqxmd.com/read/28335826/first-establishment-of-microsatellite-markers-in-clausiliid-snails-mollusca-gastropoda-clausiliidae
#17
Katharina Jaksch, Luise Kruckenhauser, Elisabeth Haring, Zoltán Fehér
BACKGROUND: Clausiliidae (door snails) are gastropods with a very high diversity concerning shell morphology, especially of their complex closing apparatus, which provides the most important diagnostic traits for classification of taxa. Due to the high variability, a high number of taxa has been described, though their systematics and taxonomy is partially controversially discussed. Montenegrina is the second most speciose door snail genus in Europe. It is an obligate rock-dwelling land snail and has, compared to its complex systematics, a rather small distribution range in the western parts of the Balkan Peninsula...
March 23, 2017: BMC Research Notes
https://www.readbyqxmd.com/read/28332570/iron-minerals-within-specific-microfossil-morphospecies-of-the-1-88%C3%A2-ga-gunflint-formation
#18
Kevin Lepot, Ahmed Addad, Andrew H Knoll, Jian Wang, David Troadec, Armand Béché, Emmanuelle J Javaux
Problematic microfossils dominate the palaeontological record between the Great Oxidation Event 2.4 billion years ago (Ga) and the last Palaeoproterozoic iron formations, deposited 500-600 million years later. These fossils are often associated with iron-rich sedimentary rocks, but their affinities, metabolism, and, hence, their contributions to Earth surface oxidation and Fe deposition remain unknown. Here we show that specific microfossil populations of the 1.88 Ga Gunflint Iron Formation contain Fe-silicate and Fe-carbonate nanocrystal concentrations in cell interiors...
March 23, 2017: Nature Communications
https://www.readbyqxmd.com/read/28332396/salinity-dependent-contact-angle-alteration-in-oil-brine-silicate-systems-the-critical-role-of-divalent-cations
#19
Martin E J Haagh, Igor Siretanu, Michael H G Duits, Frieder Mugele
The effectiveness of water flooding oil recovery depends to an important extent on the competitive wetting of oil and water on the solid rock matrix. Here, we use macroscopic contact angle goniometry in highly idealized model systems to evaluate how brine salinity affects the balance of wetting forces and to infer the microscopic origin of the resulting contact angle alteration. We focus in particular on two competing mechanisms debated in the literature, namely double layer expansion and divalent cation bridging...
March 23, 2017: Langmuir: the ACS Journal of Surfaces and Colloids
https://www.readbyqxmd.com/read/28332011/delayed-otolith-development-does-not-impair-vestibular-circuit-formation-in-zebrafish
#20
Richard Roberts, Jeffrey Elsner, Martha W Bagnall
What is the role of normally patterned sensory signaling in development of vestibular circuits? For technical reasons, including the difficulty in depriving animals of vestibular inputs, this has been a challenging question to address. Here we take advantage of a vestibular-deficient zebrafish mutant, rock solo (AN66) , in order to examine whether normal sensory input is required for formation of vestibular-driven postural circuitry. We show that the rock solo (AN66) mutant is a splice site mutation in the secreted glycoprotein otogelin (otog), which we confirm through both whole genome sequencing and complementation with an otog early termination mutant...
March 22, 2017: Journal of the Association for Research in Otolaryngology: JARO
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