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https://www.readbyqxmd.com/read/27910518/aerogel-cherenkov-detector-for-characterizing-the-intense-flash-x-ray-source-cygnus-spectrum
#1
Y Kim, H W Herrmann, A M McEvoy, C S Young, C Hamilton, D D Schwellenbach, R M Malone, M I Kaufman, A S Smith
An aerogel Cherenkov detector is proposed to measure the X-ray energy spectrum from the Cygnus-intense flash X-ray source operated at the Nevada National Security Site. An array of aerogels set at a variety of thresholds between 1 and 3 MeV will be adequate to map out the bremsstrahlung X-ray production of the Cygnus, where the maximum energy of the spectrum is normally around 2.5 MeV. In addition to the Cherenkov radiation from aerogels, one possible competing light-production mechanism is optical transition radiation (OTR), which may be significant in aerogels due to the large number of transitions from SiO2 clusters to vacuum voids...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27910373/development-of-a-spectroscopic-technique-for-simultaneous-magnetic-field-electron-density-and-temperature-measurements-in-icf-relevant-plasmas
#2
E C Dutra, J A Koch, R Presura, W A Angermeier, T Darling, S Haque, R C Mancini, A M Covington
Spectroscopic techniques in the visible range are often used in plasma experiments to measure B-field induced Zeeman splitting, electron densities via Stark broadening, and temperatures from Doppler broadening. However, when electron densities and temperatures are sufficiently high, the broadening of the Stark and Doppler components can dominate the emission spectra and obscure the Zeeman component. In this research, we are developing a time-resolved multi-axial technique for measuring the Zeeman, Stark, and Doppler broadened line emission of dense magnetized plasmas for Z-pinch and Dense Plasma Focus (DPF) accelerators...
November 2016: Review of Scientific Instruments
https://www.readbyqxmd.com/read/27902732/predictors-of-current-and-longer-term-patterns-of-abundance-of-american-pikas-ochotona-princeps-across-a-leading-edge-protected-area
#3
Lucas Moyer-Horner, Erik A Beever, Douglas H Johnson, Mark Biel, Jami Belt
American pikas (Ochotona princeps) have been heralded as indicators of montane-mammal response to contemporary climate change. Pikas no longer occupy the driest and lowest-elevation sites in numerous parts of their geographic range. Conversely, pikas have exhibited higher rates of occupancy and persistence in Rocky Mountain and Sierra Nevada montane 'mainlands'. Research and monitoring efforts on pikas across the western USA have collectively shown the nuance and complexity with which climate will often act on species in diverse topographic and climatic contexts...
2016: PloS One
https://www.readbyqxmd.com/read/27892512/where-is-iron-in-erionite-a-multidisciplinary-study-on-fibrous-erionite-na-from-jersey-nevada-usa
#4
Alessandro F Gualtieri, Nicola Bursi Gandolfi, Simone Pollastri, Kilian Pollok, Falko Langenhorst
Fibrous erionite is a mineral fibre of great concern but to date mechanisms by which it induces cyto- and geno-toxic damage, and especially the role of iron associated to this zeolite species, remain poorly understood. One of the reasons is that we still don't know exactly where iron is in natural erionite. This work is focused on fibrous erionite-Na from Jersey (Nevada, USA) and attempts to draw a general model of occurrence of iron in erionite and relationship with toxicity mechanisms. It was found that iron is present as 6-fold coordinated Fe(3+) not part of the zeolite structure...
November 28, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27870045/unprecedented-remote-sensing-data-over-king-and-rim-megafires-in-the-sierra-nevada-mountains-of-california
#5
E Natasha Stavros, Zachary Tane, Van R Kane, Sander Veraverbeke, Robert J McGaughey, James A Lutz, Carlos Ramirez, David Schimel
Megafires have lasting social, ecological, and economic impacts and are increasing in the western contiguous United States. Because of their infrequent nature, there is a limited sample of megafires to investigate their unique behavior, drivers, and relationship to forest management practices. One approach is to characterize critical information pre-, during, and post-fire using remote sensing. In August 2013, the Rim Fire burned 104,131 ha and in September 2014, the King Fire burned 39,545 ha. Both fires occurred in California's Sierra Nevada...
November 2016: Ecology
https://www.readbyqxmd.com/read/27859135/why-do-trees-die-characterizing-the-drivers-of-background-tree-mortality
#6
Adrian J Das, Nathan L Stephenson, Kristin P Davis
The drivers of background tree mortality rates-the typical low rates of tree mortality found in forests in the absence of acute stresses like drought-are central to our understanding of forest dynamics, the effects of ongoing environmental changes on forests, and the causes and consequences of geographical gradients in the nature and strength of biotic interactions. To shed light on factors contributing to background tree mortality, we analyzed detailed pathological data from 200,668 tree-years of observation and 3,729 individual tree deaths, recorded over a 13-yr period in a network of old-growth forest plots in California's Sierra Nevada mountain range...
October 2016: Ecology
https://www.readbyqxmd.com/read/27849589/socioecological-transitions-trigger-fire-regime-shifts-and-modulate-fire-climate-interactions-in-the-sierra-nevada-usa-1600-2015-ce
#7
Alan H Taylor, Valerie Trouet, Carl N Skinner, Scott Stephens
Large wildfires in California cause significant socioecological impacts, and half of the federal funds for fire suppression are spent each year in California. Future fire activity is projected to increase with climate change, but predictions are uncertain because humans can modulate or even override climatic effects on fire activity. Here we test the hypothesis that changes in socioecological systems from the Native American to the current period drove shifts in fire activity and modulated fire-climate relationships in the Sierra Nevada...
November 29, 2016: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/27842967/monitoring-bacterial-indicators-of-water-quality-in-a-tidally-influenced-delta-a-sisyphean-pursuit
#8
Melissa L Partyka, Ronald F Bond, Jennifer A Chase, Edward R Atwill
The Sacramento-San Joaquin Delta Estuary (Delta) is the confluence of two major watersheds draining the Western Sierra Nevada mountains into the Central Valley of California, ultimately terminating into San Francisco Bay. We sampled 88 sites once a month for two years (2006-2008) over 87 separate sampling events for a total of 1740 samples. Water samples were analyzed for fecal indicator bacteria (Escherichia coli, enterococci and fecal coliforms), and 53 other physiochemical, land use, and environmental characteristics...
November 11, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/27834764/vascular-ring-diagnosis-and-management-notable-trends-over-25-years
#9
William N Evans, Ruben J Acherman, Michael L Ciccolo, Sergio A Carrillo, Gary A Mayman, Carlos F Luna, Robert C Rollins, William J Castillo, Humberto Restrepo
BACKGROUND: Vascular rings (VRs) are recognized as uncommon but not rare cardiovascular malformations. METHODS: We analyzed data from all patients born in Southern Nevada, who underwent diagnosis and management of VR from 1990 to 2015, RESULTS: From 1990 to 2015, a total of 92 patients were diagnosed prenatally and postnatally. Of the 92 patients, 73 (79%) had right aortic arch and aberrant left subclavian artery (RAA-ALS) with a left ductus arteriosus or ligamentum, 17 (19%) had a double aortic arch (DAA), and 2 (2%) had a pulmonary artery sling...
November 2016: World Journal for Pediatric & Congenital Heart Surgery
https://www.readbyqxmd.com/read/27830602/around-the-world
#10
(no author information available yet)
1. 2nd world congress on nursing and healthcare 1-3 December, Las Vegas, Nevada, United States tinyurl.com/world-nursing.
November 10, 2016: Emergency Nurse: the Journal of the RCN Accident and Emergency Nursing Association
https://www.readbyqxmd.com/read/27811667/the-harvestman-genus-taracus-simon-1879-and-the-new-genus-oskoron%C3%A2-opiliones-ischyropsalidoidea-taracidae
#11
William A Shear, Joseph G Warfel
The ischyropsalidoid genus Taracus Simon 1879 is reviewed and all previously named species are redescribed. Taracus nigripes Goodnight & Goodnight, 1943 is synonymized with T. packardi Simon 1879, and T. malkini Goodnight & Goodnight 1945 with Oskoron spinosus (Banks) 1894; the type locality of T. gertschi Goodnight & Goodnight 1942 is corrected from "eastern Oregon" to Rose Lake, Idaho, based on original labelling. The following new species of Taracus are described: T. carmanah (Vancouver Island), T. marchingtoni (Oregon), T...
November 1, 2016: Zootaxa
https://www.readbyqxmd.com/read/27805933/a-home-healthcare-nursing-competency-tool-kit
#12
Ruby M Gabbedon
As a result of the Affordable Care Act, increases in aging populations, and advances in technologies, there is a critical need for highly qualified, competent home healthcare nurses. According to the Joint Commission's Human Resource Standard, home healthcare nurses must demonstrate their competency at least every 3 years by participating in in-service education (). Unfortunately, not all home healthcare agencies (HHA) are accredited by the Joint Commissions. A review of several states healthcare regulatory rules-specifically California, New York, Nevada, and Virginia, reveals no mandates for home healthcare nurses to demonstrate competencies for skills specific for home healthcare nursing...
November 2016: Home Healthcare Now
https://www.readbyqxmd.com/read/27801579/evidence-for-different-reactive-hg-sources-and-chemical-compounds-at-adjacent-valley-and-high-elevation-locations
#13
Mae Sexauer Gustin, Ashley M Pierce, Jiaoyan Huang, Matthieu B Miller, Heather A Holmes, S Marcela Loria-Salazar
The spatial distribution of chemical compounds and concentration of reactive mercury (RM), defined as the sum of gaseous oxidized mercury (GOM) and <3 μm particulate bound mercury (PBM), are poorly characterized. The objective of this study was to understand the chemistry, concentration, and spatial and temporal distribution of GOM at adjacent locations (12 km apart) with a difference in elevation of ∼1000 m. Atmospheric GOM measurements were made with passive and active samplers using membranes, and at one location, a Tekran mercury measurement system was used...
November 1, 2016: Environmental Science & Technology
https://www.readbyqxmd.com/read/27801532/response-of-sierra-nevada-forests-to-projected-climate-wildfire-interactions
#14
Shuang Liang, Matthew D Hurteau, Anthony LeRoy Westerling
Climate influences forests directly and indirectly through disturbance. The interaction of climate change and increasing area burned has the potential to alter forest composition and community assembly. However, the overall forest response is likely to be influenced by species-specific responses to environmental change and the scale of change in overstory species cover. In this study, we sought to quantify how projected changes in climate and large wildfire size would alter forest communities and carbon (C) dynamics, irrespective of competition from nontree species and potential changes in other fire regimes, across the Sierra Nevada, USA...
November 1, 2016: Global Change Biology
https://www.readbyqxmd.com/read/27795267/high-quality-draft-genome-sequence-of-thermocrinis-jamiesonii-gbs1t-isolated-from-great-boiling-spring-nevada
#15
Rakesh Ganji, Senthil K Murugapiran, John C Ong, Namritha Manoharan, Marcel Huntemann, Alicia Clum, Manoj Pillay, Krishnaveni Palaniappan, Neha Varghese, Natalia Mikhailova, Dimitrios Stamatis, T B K Reddy, Chew Yee Ngan, Chris Daum, Kecia Duffy, Nicole Shapiro, Victor Markowitz, Natalia Ivanova, Nikos Kyrpides, Tanja Woyke, Jeremy A Dodsworth, Brian P Hedlund
The draft genome of Thermocrinis jamiesonii GBS1(T) is 1,315,625 bp in 10 contigs and encodes 1,463 predicted genes. The presence of sox genes and various glycoside hydrolases and the absence of uptake NiFe hydrogenases (hyaB) are consistent with a requirement for thiosulfate and suggest the ability to use carbohydrate polymers.
October 20, 2016: Genome Announcements
https://www.readbyqxmd.com/read/27788056/comparison-of-current-methods-for-the-detection-of-chronic-mycoplasmal-urtd-in-wild-populations-of-the-mojave-desert-tortoise-gopherus-agassizii
#16
Franziska C Sandmeier, Chava L Weitzman, K Nichole Maloney, C Richard Tracy, Nathan Nieto, Mike B Teglas, Kenneth W Hunter, Sally DuPré, C M Gienger, Michael W Tuma
Pathogens that cause subclinical diseases or exhibit low infection intensities are difficult to quantify in wild populations. Mojave desert tortoises ( Gopherus agassizii ) have been the focus of much research aimed at measuring the presence of upper respiratory disease (URTD) and URTD-associated pathogens, and techniques used to quantify disease in Gopherus species have also been used for disease surveillance in other species of turtles and tortoises of conservation concern. Published surveys of G. agassizii populations have found a relatively low prevalence of URTD, with most URTD-positive animals exhibiting moderate, intermittent signs of morbidity...
October 27, 2016: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/27779183/surface-uplift-in-the-central-andes-driven-by-growth-of-the-altiplano-puna-magma-body
#17
Jonathan P Perkins, Kevin M Ward, Shanaka L de Silva, George Zandt, Susan L Beck, Noah J Finnegan
The Altiplano-Puna Magma Body (APMB) in the Central Andes is the largest imaged magma reservoir on Earth, and is located within the second highest orogenic plateau on Earth, the Altiplano-Puna. Although the APMB is a first-order geologic feature similar to the Sierra Nevada batholith, its role in the surface uplift history of the Central Andes remains uncertain. Here we show that a long-wavelength topographic dome overlies the seismically measured extent of the APMB, and gravity data suggest that the uplift is isostatically compensated...
October 25, 2016: Nature Communications
https://www.readbyqxmd.com/read/27775761/state-level-cancer-mortality-attributable-to-cigarette-smoking-in-the-united-states
#18
Joannie Lortet-Tieulent, Ann Goding Sauer, Rebecca L Siegel, Kimberly D Miller, Farhad Islami, Stacey A Fedewa, Eric J Jacobs, Ahmedin Jemal
Importance: State-specific information about the health burden of smoking is valuable because state-level initiatives are at the forefront of tobacco control. Smoking-attributable cancer mortality estimates are currently available nationally and by cancer, but not by state. Objective: To calculate the proportion of cancer deaths among adults 35 years and older that were attributable to cigarette smoking in 2014 in each state and the District of Columbia. Design, Setting, and Participants: The population-attributable fraction (PAF) of cancer deaths due to cigarette smoking was computed using relative risks for 12 smoking-related cancers (acute myeloid leukemia and cancers of the oral cavity and pharynx; esophagus; stomach; colorectum; liver; pancreas; larynx; trachea, lung, and bronchus; cervix uteri; kidney and renal pelvis; and urinary bladder) from large US prospective studies and state-specific smoking prevalence data from the Behavioral Risk Factor Surveillance System...
October 24, 2016: JAMA Internal Medicine
https://www.readbyqxmd.com/read/27771593/mercury-and-drought-along-the-lower-carson-river-nevada-iv-snowy-egret-post-fledging-dispersal-timing-of-migration-and-survival-2002-2004
#19
Charles J Henny, Elwood F Hill, Robert A Grove, Nathan D Chelgren, Patricia K Haggerty
This telemetry study is an extension of our 1997-2006 research on historical mercury contamination on snowy egrets (Egretta thula) up to ~ 20 days of age. Findings from initial studies at the mercury-contaminated Carson River colony at Lahontan Reservoir (LR) and a similar-sized reference (REF) colony on the Humboldt River included mercury-related physiological, biochemical, histopathological and reproductive effects up to ~20 days of age; with poor water years (2000-04), i.e., reduced prey availability, exacerbating effects...
October 20, 2016: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/27769278/evaluation-of-three-enzyme-linked-immunosorbent-assays-for-sarcoptic-mange-diagnosis-and-assessment-in-the-iberian-ibex-capra-pyrenaica
#20
Arián Ráez-Bravo, José Enrique Granados, Emmanuel Serrano, Debora Dellamaria, Rosa Casais, Luca Rossi, Anna Puigdemont, Francisco Javier Cano-Manuel, Paulino Fandos, Jesús María Pérez, José Espinosa, Ramón Casimiro Soriguer, Carlo Citterio, Jorge Ramón López-Olvera
BACKGROUND: Sarcoptic mange is a contagious skin disease caused by the mite Sarcoptes scabiei, affecting different mammalian species worldwide including the Iberian ibex (Capra pyrenaica), in which mortalities over 90 % of the population have been reported. No efficient diagnostic methods are available for this disease, particularly when there are low mite numbers and mild or no clinical signs. In this study, three enzyme-linked immunosorbent assays (ELISA) developed for dog (ELISA A), Cantabrian chamois (Rupicapra pyrenaica parva) (ELISA B) and Alpine chamois (Rupicapra rupicapra) (ELISA C), were evaluated to detect specific antibodies (IgG) to sarcoptic mange in Iberian ibex sera...
October 21, 2016: Parasites & Vectors
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