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https://www.readbyqxmd.com/read/28647247/spatial-variability-and-possible-sources-of-acetate-and-formate-in-the-surface-snow-of-east-antarctica
#1
Gautami Samui, Runa Antony, Kanthanathan Mahalinganathan, Meloth Thamban
Spatial trends of acetate (Ac(-)) and formate (Fo(-)) were determined in surface snow samples along a coastal-inland transect (180km) in the ice cap region at Princess Elizabeth Land and along a coastal transect in the Amery Ice Shelf (130km), East Antarctica. Variations in both Ac(-) and Fo(-) seem to be unrelated to the acidity of snow. Ionic balance determined for the snow samples indicate the availability of HNO3 that could undergo photolysis to produce hydroxyl radical (OH), one of the major reactants involved in oxidation reactions with organic matter...
July 2017: Journal of Environmental Sciences (China)
https://www.readbyqxmd.com/read/28646778/the-hydrological-functioning-of-a-constructed-fen-wetland-watershed
#2
Scott J Ketcheson, Jonathan S Price, Owen Sutton, George Sutherland, Eric Kessel, Richard M Petrone
Mine reclamation requires the reconstruction of entire landforms and drainage systems. The hydrological regime of reclaimed landscapes will be a manifestation of the processes operating within the individual landforms that comprise it. Hydrology is the most important process regulating wetland function and development, via strong controls on chemical and biotic processes. Accordingly, this research addresses the growing and immediate need to understand the hydrological processes that operate within reconstructed landscapes following resource extraction...
June 21, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28646776/characterizing-the-pahs-in-surface-waters-and-snow-in-the-athabasca-region-implications-for-identifying-hydrological-pathways-of-atmospheric-deposition
#3
S J Birks, S Cho, E Taylor, Y Yi, J J Gibson
The composition of polycyclic aromatic hydrocarbons present in snow and surface waters in the Athabasca Oil Sands Region (AOSR) was characterized in order to identify major contributors to the organics detected in rivers and lakes in the region. PAH concentrations, measured by three monitoring programs in 2011, were used to compare the PAH compositions of snow and surface waters across the AOSR. The 2011 dataset includes total (dissolved+particulate) concentrations of thirty-four parent and alkylated PAH compounds in 105 snow, 272 river, and 3 lake samples...
June 21, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28644579/pairing-field-methods-to-improve-inference-in-wildlife-surveys-while-accommodating-detection-covariance
#4
John Clare, Shawn T McKinney, John E DePue, Cynthia S Loftin
It is common to use multiple field sampling methods when implementing wildlife surveys to compare method efficacy or cost-efficiency, integrate distinct pieces of information provided by separate methods, or evaluate method-specific biases and misclassification error. Existing models that combine information from multiple field methods or sampling devices permit rigorous comparison of method-specific detection parameters, enable estimation of additional parameters such as false-positive detection probability, and improve occurrence or abundance estimates, but with the assumption that the separate sampling methods produce detections independently of one another...
June 23, 2017: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/28641772/susac-syndrome-a-differential-diagnosis-of-white-matter-lesions
#5
Mariano Marrodan, Jorge Correale, Lucas Alessandro, Mariela Amaya, Maria Eugenia Fracaro, Alejandro Alfredo Köhler, Marcela Fiol
INTRODUCTION: Susac Syndrome is an autoimmune endotheliopathy affecting capillaries and precapillary arterioles of the brain, inner ear and retina. The classic symptom triad includes visual disturbances, hypoacusia, and encephalopathy, but is rarely fully manifest at onset. The syndrome typically follows an active fluctuating monophasic course. Typical imaging findings on brain magnetic resonance show central fiber microischemias/microinfarctions of the corpus callosum known as "snow balls", as well as lineal infarcts and upper callosal fiber involvement...
July 2017: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/28631229/do-terrestrial-animals-avoid-areas-close-to-turbines-in-functioning-wind-farms-in-agricultural-landscapes
#6
Rafał Łopucki, Daniel Klich, Sylwia Gielarek
Most studies on the effects of wind energy on animals have focused on avian and bat activity, habitat use, and mortality, whereas very few have been published on terrestrial, non-volant wildlife. In this paper, we studied the utilization of functioning wind farm areas by four terrestrial animals common to agricultural landscapes: European roe deer, European hare, red fox, and the common pheasant. Firstly, we expected that the studied animals do not avoid areas close to turbines and utilize the whole area of functioning wind farms with a frequency similar to the control areas...
July 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28629349/relationships-between-dental-personnel-and-non-dental-primary-health-care-providers-in-rural-and-remote-queensland-australia-dental-perspectives
#7
Jackie Stuart, Ha Hoang, Len Crocombe, Tony Barnett
BACKGROUND: Collaboration between dental practitioners and non-dental primary care providers has the potential to improve oral health care for people in rural and remote communities, where access to oral health services is limited. However, there is limited research on collaboration between these professional disciplines. The purpose of this paper was to explore the relationships between dental practitioners and non-dental primary care providers from rural and remote areas of Queensland and to identify strategies that could improve collaboration between these disciplines from the perspective of dental participants...
June 19, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/28628108/germline-hypomorphic-card11-mutations-in-severe-atopic-disease
#8
Chi A Ma, Jeffrey R Stinson, Yuan Zhang, Jordan K Abbott, Michael A Weinreich, Pia J Hauk, Paul R Reynolds, Jonathan J Lyons, Celeste G Nelson, Elisa Ruffo, Batsukh Dorjbal, Salomé Glauzy, Natsuko Yamakawa, Swadhinya Arjunaraja, Kelsey Voss, Jennifer Stoddard, Julie Niemela, Yu Zhang, Sergio D Rosenzweig, Joshua J McElwee, Thomas DiMaggio, Helen F Matthews, Nina Jones, Kelly D Stone, Alejandro Palma, Matías Oleastro, Emma Prieto, Andrea R Bernasconi, Geronimo Dubra, Silvia Danielian, Jonathan Zaiat, Marcelo A Marti, Brian Kim, Megan A Cooper, Neil D Romberg, Eric Meffre, Erwin W Gelfand, Andrew L Snow, Joshua D Milner
Few monogenic causes for severe manifestations of common allergic diseases have been identified. Through next-generation sequencing on a cohort of patients with severe atopic dermatitis with and without comorbid infections, we found eight individuals, from four families, with novel heterozygous mutations in CARD11, which encodes a scaffolding protein involved in lymphocyte receptor signaling. Disease improved over time in most patients. Transfection of mutant CARD11 expression constructs into T cell lines demonstrated both loss-of-function and dominant-interfering activity upon antigen receptor-induced activation of nuclear factor-κB and mammalian target of rapamycin complex 1 (mTORC1)...
June 19, 2017: Nature Genetics
https://www.readbyqxmd.com/read/28627652/eriodictyol-7%C3%A2-o%C3%A2-%C3%AE-%C3%A2-d-glucopyranoside-from-coreopsis%C3%A2-tinctoria-nutt-ameliorates-lipid-disorders-via-protecting-mitochondrial-function-and-suppressing-lipogenesis
#9
Yuyan Liang, Hai Niu, Limei Ma, Dan Du, Li Wen, Qing Xia, Wen Huang
Coreopsis tinctoria (snow chrysanthemum) has been reported to exert antihyperlipidemic effects. The present study aimed to identify the active compounds of Coreopsis tinctoria and to investigate the molecular mechanisms underlying its effects on lipid dysregulation by measuring lipid levels, reactive oxygen species, lipid peroxidation and fatty acid synthesis. The present results demonstrated that snow chrysanthemum aqueous extracts significantly reduced serum lipid levels and oxidative stress in vivo. The main compounds that were isolated were identified as flavanomarein (compound 1) and eriodictyol 7‑O‑β‑D glucopyranoside (compound 2)...
June 9, 2017: Molecular Medicine Reports
https://www.readbyqxmd.com/read/28623328/platelet-rich-plasma-induces-post-natal-maturation-of-immature-articular-cartilage-and-correlates-with-loxl1-activation
#10
Yadan Zhang, Ben J Morgan, Rachel Smith, Christopher R Fellows, Catherine Thornton, Martyn Snow, Lewis W Francis, Ilyas M Khan
Platelet-rich plasma (PRP) is used to stimulate the repair of acute and chronic cartilage damage even though there is no definitive evidence of how this is achieved. Chondrocytes in injured and diseased situations frequently re-express phenotypic biomarkers of immature cartilage so tissue maturation is a potential pathway for restoration of normal structure and function. We used an in vitro model of growth factor-induced maturation to perform a comparative study in order to determine whether PRP can also induce this specific form of remodeling that is characterised by increased cellular proliferation and tissue stiffness...
June 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28623178/adrenal-derived-stress-hormones-modulate-ozone-induced-lung-injury-and-inflammation
#11
Andres Henriquez, John House, Desinia B Miller, Samantha J Snow, Anna Fisher, Hongzu Ren, Mette C Schladweiler, Allen D Ledbetter, Fred Wright, Urmila P Kodavanti
Ozone-induced systemic effects are modulated through activation of the neuro-hormonal stress response pathway. Adrenal demedullation (DEMED) or bilateral total adrenalectomy (ADREX) inhibits systemic and pulmonary effects of acute ozone exposure. To understand the influence of adrenal-derived stress hormones in mediating ozone-induced lung injury/inflammation, we assessed global gene expression (mRNA sequencing) and selected proteins in lung tissues from male Wistar-Kyoto rats that underwent DEMED, ADREX, or sham surgery (SHAM) prior to their exposure to air or ozone (1ppm), 4h/day for 1 or 2days...
June 13, 2017: Toxicology and Applied Pharmacology
https://www.readbyqxmd.com/read/28619942/seasonal-water-storage-stress-modulation-and-california-seismicity
#12
Christopher W Johnson, Yuning Fu, Roland Bürgmann
Establishing what controls the timing of earthquakes is fundamental to understanding the nature of the earthquake cycle and critical to determining time-dependent earthquake hazard. Seasonal loading provides a natural laboratory to explore the crustal response to a quantifiable transient force. In California, water storage deforms the crust as snow and water accumulates during the wet winter months. We used 9 years of global positioning system (GPS) vertical deformation time series to constrain models of monthly hydrospheric loading and the resulting stress changes on fault planes of small earthquakes...
June 16, 2017: Science
https://www.readbyqxmd.com/read/28619296/understanding-north-american-yoga-therapists-attitudes-skills-and-use-of-evidence-based-practice-a-cross-national-survey
#13
Marlysa Sullivan, Matthew Leach, James Snow, Steffany Moonaz
INTRODUCTION: Little is known about the adoption of evidence-based practice (EBP) by yoga therapists (YTs). OBJECTIVE: To determine the attitudes, skills, training, use, barriers and facilitators to the use of EBP amongst North American YTs DESIGN: Cross-sectional, descriptive survey METHODS: Self-identified YTs practicing in North America were invited to participate in an online survey. YT attitudes, skills, training, utilisation, barriers to use, and facilitators of EBP use were measured using the 84-item Evidence-Based practice Attitude and utilization SurvEy (EBASE)...
June 2017: Complementary Therapies in Medicine
https://www.readbyqxmd.com/read/28614040/statistical-analysis-of-winter-ozone-exceedances-in-the-uintah-basin-utah-usa
#14
Marc L Mansfield
Because of the confluence of several factors (persistent multi-day inversions, petroleum production, and snow cover) the Uintah Basin of eastern Utah, USA exhibits high concentrations of winter ozone. A regression analysis is presented that successfully predicts daily ozone concentration with a standard error of about 11 ppb. It also predicts with 90% accuracy whether any given day will exceed the National Ambient Air Quality Standard for ozone, 70 ppb. An analysis is introduced for calculating a "pseudo-lapse rate," a determination of inversion intensity in the absence of sounding data...
June 14, 2017: Journal of the Air & Waste Management Association
https://www.readbyqxmd.com/read/28603518/microbial-extracellular-polymeric-substances-epss-in-ocean-systems
#15
REVIEW
Alan W Decho, Tony Gutierrez
Microbial cells (i.e., bacteria, archaea, microeukaryotes) in oceans secrete a diverse array of large molecules, collectively called extracellular polymeric substances (EPSs) or simply exopolymers. These secretions facilitate attachment to surfaces that lead to the formation of structured 'biofilm' communities. In open-water environments, they also lead to formation of organic colloids, and larger aggregations of cells, called 'marine snow.' Secretion of EPS is now recognized as a fundamental microbial adaptation, occurring under many environmental conditions, and one that influences many ocean processes...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28600858/scale-dependent-effects-of-post-fire-canopy-cover-on-snowpack-depth-in-montane-coniferous-forests
#16
Jens T Stevens
Winter snowpack in dry montane regions provides a valuable ecosystem service by storing water into the growing season. Wildfire in coniferous montane forests has the potential to indirectly affect snowpack accumulation and ablation (mass loss) rates by reducing canopy cover, which reduces canopy interception of snow but also increases solar radiation and wind speed. These counteracting effects create uncertainty regarding the canopy conditions that maximize post-fire snowpack duration, which is of concern as montane regions across the western United States experience increasingly warm, dry winters with below-average snowpack...
June 9, 2017: Ecological Applications: a Publication of the Ecological Society of America
https://www.readbyqxmd.com/read/28591206/erbb3-a-potential-serum-biomarker-for-early-detection-and-therapeutic-target-for-devil-facial-tumour-1-dft1
#17
Dane A Hayes, Dale A Kunde, Robyn L Taylor, Stephen B Pyecroft, Sukhwinder Singh Sohal, Elizabeth T Snow
Devil Facial Tumour 1 (DFT1) is one of two transmissible neoplasms of Tasmanian devils (Sarcophilus harrisii) predominantly affecting their facial regions. DFT1's cellular origin is that of Schwann cell lineage where lesions are evident macroscopically late in the disease. Conversely, the pre-clinical timeframe from cellular transmission to appearance of DFT1 remains uncertain demonstrating the importance of an effective pre-clinical biomarker. We show that ERBB3, a marker expressed normally by the developing neural crest and Schwann cells, is immunohistohemically expressed by DFT1, therefore the potential of ERBB3 as a biomarker was explored...
2017: PloS One
https://www.readbyqxmd.com/read/28590406/de-novo-transcriptome-sequencing-and-the-hypothetical-cold-response-mode-of-saussurea-involucrata-in-extreme-cold-environments
#18
Jin Li, Hailiang Liu, Wenwen Xia, Jianqiang Mu, Yujie Feng, Ruina Liu, Panyao Yan, Aiying Wang, Zhongping Lin, Yong Guo, Jianbo Zhu, Xianfeng Chen
Saussurea involucrata grows in high mountain areas covered by snow throughout the year. The temperature of this habitat can change drastically in one day. To gain a better understanding of the cold response signaling pathways and molecular metabolic reactions involved in cold stress tolerance, genome-wide transcriptional analyses were performed using RNA-Seq technologies. A total of 199,758 transcripts were assembled, producing 138,540 unigenes with 46.8 Gb clean data. Overall, 184,416 (92.32%) transcripts were successfully annotated...
June 7, 2017: International Journal of Molecular Sciences
https://www.readbyqxmd.com/read/28587255/a-forward-gps-multipath-simulator-based-on-the-vegetation-radiative-transfer-equation-model
#19
Xuerui Wu, Shuanggen Jin, Junming Xia
Global Navigation Satellite Systems (GNSS) have been widely used in navigation, positioning and timing. Nowadays, the multipath errors may be re-utilized for the remote sensing of geophysical parameters (soil moisture, vegetation and snow depth), i.e., GPS-Multipath Reflectometry (GPS-MR). However, bistatic scattering properties and the relation between GPS observables and geophysical parameters are not clear, e.g., vegetation. In this paper, a new element on bistatic scattering properties of vegetation is incorporated into the traditional GPS-MR model...
June 5, 2017: Sensors
https://www.readbyqxmd.com/read/28585283/enhanced-crude-oil-biodegradative-potential-of-natural-phytoplankton-associated-hydrocarbonoclastic-bacteria
#20
Haydn Thompson, Angelina Angelova, Bernard Bowler, Martin Jones, Tony Gutierrez
Phytoplankton have been shown to harbour a diversity of hydrocarbonoclastic bacteria (HCB), yet it is not understood how these phytoplankton-associated HCB would respond in the event of an oil spill at sea. Here, we assess the diversity and dynamics of the bacterial community associated with a natural population of marine phytoplankton under oil spill-simulated conditions, and compare it to that of the free-living (non phytoplankton-associated) bacterial community. Whilst the crude oil severely impacted the phytoplankton population and was likely conducive to marine oil snow (MOS) formation, analysis of the MiSeq-derived 16S rRNA data revealed dramatic and differential shifts in the oil-amended communities that included blooms of recognised HCB (e...
June 5, 2017: Environmental Microbiology
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