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https://www.readbyqxmd.com/read/27920606/phylogenetic-placement-of-the-pacific-northwest-subterranean-endemic-diving-beetle-stygoporus-oregonensis-larson-labonte-dytiscidae-hydroporinae
#1
Kojun Kanda, R Antonio Gomez, Richard Van Driesche, Kelly B Miller, David R Maddison
Stygoporus oregonensis Larson & LaBonte is a little-known subterranean diving beetle, which, until recently, had not been collected since the type series was taken from a shallow well in western Oregon, USA, in 1984. Here we report the discovery of additional specimens collected from a nearby well in the Willamette Valley. Sequence data from four mitochondrial genes, wingless, and histone III place Stygoporus Larson & LaBonte in the predominantly Mediterranean subtribe Siettitiina of the Hydroporini. Morphological support for these results is discussed, and details of the collecting circumstances of the new specimens are presented...
2016: ZooKeys
https://www.readbyqxmd.com/read/27917584/primary-productivity-of-snow-algae-communities-on-stratovolcanoes-of-the-pacific-northwest
#2
T L Hamilton, J Havig
The majority of geomicrobiological research conducted on glacial systems to date has focused on glaciers that override primarily carbonate or granitic bedrock types, with little known of the processes that support microbial life in glacial systems overriding volcanic terrains (e.g., basalt or andesite). To better constrain the role of the supraglacial ecosystems in the carbon and nitrogen cycles, to gain insight into microbiome composition and function in alpine glacial systems overriding volcanic terrains, and to constrain potential elemental sequestration or release through weathering processes associated with snow algae communities, we examined the microbial community structure and primary productivity of snow algae communities on stratovolcanoes in the Cascade Range of the Pacific Northwest...
December 5, 2016: Geobiology
https://www.readbyqxmd.com/read/27909827/remediation-of-blowouts-by-clonal-plants-in-maqu-degraded-alpine-grasslands-of-northwest-china
#3
JianJun Kang, WenZhi Zhao, Ming Zhao
The sand-fixation of plants is considered to be the most effective and fundamental measure in desertification control in many arid and semi-arid regions. Carex brunnescens (Carex spp) and Leymus secalinus (Leymus), two perennial clonal herbs native to the Maqu degraded alpine areas of northwest China, are dominant and constructive species in active sand dunes that have excellent adaptability to fix sand dunes found to date. In order to study the ability and mechanism of sandland blowout remediation by two clone plants C...
December 1, 2016: Journal of Plant Research
https://www.readbyqxmd.com/read/27909349/spatiotemporal-patterns-and-trends-of-indian-monsoonal-rainfall-extremes
#4
Nishant Malik, Bodo Bookhagen, Peter J Mucha
In this study, we provide a comprehensive analysis of trends in the extremes during the Indian summer monsoon (ISM) months (June to September) at different temporal and spatial scales. Our goal is to identify and quantify spatiotemporal patterns and trends that have emerged during the recent decades and may be associated with changing climatic conditions. Our analysis primarily relies on quantile regression that avoids making any subjective choices on spatial, temporal, or intensity pattern of extreme rainfall events...
February 28, 2016: Geophysical Research Letters
https://www.readbyqxmd.com/read/27908461/the-vato-project-an-original-methodology-to-study-the-transfer-of-tritium-as-ht-and-hto-in-grassland-ecosystem
#5
D Maro, F Vermorel, M Rozet, C Aulagnier, D Hébert, S Le Dizès, C Voiseux, L Solier, C Cossonnet, C Godinot, B Fiévet, P Laguionie, O Connan, O Cazimajou, M Morillon, M Lamotte
Tritium ((3)H) is mainly released into the environment by nuclear power plants, military nuclear facilities and nuclear reprocessing plants. The construction of new nuclear facilities in the world as well as the evolution of nuclear fuel management might lead to an increase of (3)H discharges from the nuclear industry. The VATO project was set up by IRSN (Institut de Radioprotection et de Sûreté Nucléaire) and EDF (Electricité de France) to reduce the uncertainties in the knowledge about transfers of (3)H from an atmospheric source (currently releasing HT and HTO) to a grassland ecosystem...
November 29, 2016: Journal of Environmental Radioactivity
https://www.readbyqxmd.com/read/27907193/phylogenetic-lineages-and-postglacial-dispersal-dynamics-characterize-the-genetic-structure-of-the-tick-ixodes-ricinus-in-northwest-europe
#6
Knut H Røed, Kjersti S Kvie, Gunnar Hasle, Lucy Gilbert, Hans Petter Leinaas
Dispersal and gene flow are important mechanisms affecting the dynamics of vectors and their pathogens. Here, patterns of genetic diversity were analyzed in many North European populations of the tick, Ixodes ricinus. Population sites were selected within and between areas separated by geographical barriers in order to evaluate the importance of tick transportation by birds in producing genetic connectivity across open sea and mountain ranges. The phylogenetic analyses of the mitochondrial control region and the cytochrome b gene revealed two distinct clades with supported sub-clades, with three genetic lineages: GB and WNo associated with Great Britain and western Norway respectively, and Eu with a wider distribution across continental Europe in agreement with much lower efficiency of tick dispersal by birds than by large mammals...
2016: PloS One
https://www.readbyqxmd.com/read/27906024/rate-of-initial-highly-active-anti-retroviral-therapy-regimen-change-and-its-predictors-among-adult-hiv-patients-at-university-of-gondar-referral-hospital-northwest-ethiopia-a-retrospective-follow-up-study
#7
Degefaye Zelalem Anlay, Zinahbizu Abay Alemayehu, Berihun Assefa Dachew
BACKGROUND: Regimen change is a major challenge for the sustainability of human immunodeficiency virus (HIV) treatment program. In a resource limited setting where treatment options are limited, designing strategies to increase the durability of original regimen are essential. However, information's on rate of initial regimen change and its predictors is scarce in Ethiopia. Therefore, the purpose of this study was to assess the rate of initial highly active anti retroviral therapy (HAART) regimen change and its predictors among adult HIV patients at the University of Gondar Referral Hospital, Northwest Ethiopia...
February 17, 2016: AIDS Research and Therapy
https://www.readbyqxmd.com/read/27905863/associations-between-omega-3-fatty-acids-selenium-content-and-mercury-levels-in-wild-harvested-fish-from-the-dehcho-region-northwest-territories-canada
#8
Ellen S Reyes, Juan J Aristizabal Henao, Katherine M Kornobis, Rhona M Hanning, Shannon E Majowicz, Karsten Liber, Ken D Stark, George Low, Heidi K Swanson, Brian D Laird
To better understand the risks and benefits of eating wild-harvested fish from the Northwest Territories, Canada, levels of total mercury (HgT) and selenium (Se) and composition of omega-3 fatty acid (n-3 FA) were measured in muscle tissue of fish harvested from lakes in the Dehcho Region, Northwest Territories, Canada. Average HgT levels ranged from 0.057 mg/kg (cisco) to 0.551 mg/kg (northern pike), while average n-3 FA concentrations ranged from 101 mg/100 g (burbot) to 1,689 mg/100 g (lake trout). In contrast to HgT and n-3 FA, mean Se concentrations were relatively similar among species...
December 1, 2016: Journal of Toxicology and Environmental Health. Part A
https://www.readbyqxmd.com/read/27905483/irrigation-water-productivity-is-more-influenced-by-agronomic-practice-factors-than-by-climatic-factors-in-hexi-corridor-northwest-china
#9
Xiaolin Li, Xiaotao Zhang, Jun Niu, Ling Tong, Shaozhong Kang, Taisheng Du, Sien Li, Risheng Ding
Quantifying the influence of driving factors on irrigation water productivity (IWP) is vital for efficient agricultural water use. This study analyzed contributions of agronomic practice and climatic factors to the changes of IWP, based on the data from 1981 to 2012 in Hexi Corridor, Northwest China. Cobb-Douglas production functions were developed by the partial least squares method and contribution rates of the driving factors were calculated. Results showed that IWP and its driving factors increased during the study period, with different changing patterns...
December 1, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27904562/hyperhomocysteinemia-low-vitamin-b12-and-low-folic-acid-are-risk-factors-of-cerebral-vascular-thrombosis-in-northwest-iran
#10
Ali Akbar Taheraghdam, Nooriyeh Dalirakbari, Mohammad Khalili, Madjid Soltani, Saeid Sadeghieh Ahari
BACKGROUND: Cerebral vascular thrombosis (CVT) is the thrombosis of intracranial and sinuses. The aim of this is to estimate of risk of low folic acid, low vitamin B12, and hyperhomocysteinemia (hyper-Hcys) for CVT. MATERIALS AND METHODS: A total of 24 patients with CVT and 36 healthy controls participated in a cross-sectional case-control study. The deficient levels of folic acid and vitamin B12 defined as <10(th) percentile of folic acid and vitamin B12 level and hyper-Hcys was defined as >90(th) percentile of homocysteine of control group...
2016: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/27904561/analysis-of-outcomes-and-prognostic-factors-of-acute-lymphoblastic-leukemia-patients-treated-by-mcp841-protocol-a-regional-cancer-center-experience
#11
Akhil Kapoor, Ashok Kalwar, Narender Kumar, Mukesh Kumar Singhal, Surender Beniwal, Harvindra Singh Kumar
BACKGROUND: A dramatic improvement in the survival of acute lymphoblastic leukemia (ALL) patients in the last three decades has been observed. MCP 841 protocol is an old but effective tool with tolerable toxicities. The objective of this study was to estimate the relapse-free survival of ALL patients treated uniformly with MCP 841 protocol on the basis of various prognostic factors. MATERIALS AND METHODS: The study design was retrospective and it was conducted in a regional cancer center of Northwest India...
2016: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/27904151/phylogenetic-and-population-based-approaches-to-mitogenome-variation-do-not-support-association-with-male-infertility
#12
Alberto Gómez-Carballa, Jacobo Pardo-Seco, Federico Martinón-Torres, Antonio Salas
Infertility has a complex multifactorial etiology and a high prevalence worldwide. Several studies have pointed to variation in the mitochondrial DNA (mtDNA) molecule as a factor responsible for the different disease phenotypes related to infertility. We analyzed 53 mitogenomes of infertile males from Galicia (northwest Spain), and these haplotypes were meta-analyzed phylogenetically with 43 previously reported from Portugal. Taking advantage of the large amount of information available, we additionally carried out association tests between patient mtDNA single-nucleotide polymorphisms (mtSNPs) and haplogroups against Iberian matched controls retrieved from The 1000 Genomes Project and the literature...
December 1, 2016: Journal of Human Genetics
https://www.readbyqxmd.com/read/27901052/pacific-ocean-decadal-forcing-of-long-term-changes-in-the-western-pacific-subtropical-high
#13
Shinji Matsumura, Takeshi Horinouchi
The western Pacific subtropical high (WPSH) has a significant effect on droughts, heat waves, and tropical cyclone tracks over East Asia and the northwest Pacific. The WPSH has intensified during the past three decades, but its causes are not yet well understood. Here we show that the Pacific Decadal Oscillation (PDO) is responsible for the long-term changes in the WPSH through the meridional shift of the subtropical jet, based on comprehensive data analysis and model results. El Niño-Southern Oscillation (ENSO) is the leading forcing of WPSH variability over interannual timescales, whereas the PDO accounts for its low-frequency variability, resulting in it being independent of ENSO with regard to WPSH variability...
November 30, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27895284/spatial-and-temporal-dynamics-of-agricultural-residue-resources-in-the-last-30-years-in-china
#14
Yanli Yang, Peidong Zhang, Xutong Yang, Xiaoning Xu
The availability and distribution of biomass resources are important for the development of the bioenergy industry in a region. Biomass resources are abundant in China; however, the raw material is severely deficient, which makes the Chinese bioenergy industry an embarrassment and a contradiction. Unclear reserves and distribution and changing trends of biomass resources are the reason for this situation. A collection coefficient model of Chinese agricultural residue resources was established and the spatial and temporal pattern dynamics of agricultural residue resources in the last 30 years were analyzed...
December 2016: Waste Management & Research
https://www.readbyqxmd.com/read/27894798/does-drought-in-china-show-a-significant-decreasing-trend-from-1961-to-2009
#15
Zhaoli Wang, Jun Li, Chengguang Lai, Zhaoyang Zeng, Ruida Zhong, Xiaohong Chen, Xiaowen Zhou, Mingyuan Wang
In recent decades, the occurrence and severity of drought in China has had devastating impact on social and economic development. The increase in drought has been attributed to global warming. We used the high-accuracy self-calibrating Palmer Drought Severity Index (scPDSI) to investigate the variation in drought in China between 1961 and 2009 using the Mann-Kendall (MK), continuous wavelet transform (CWT) and the rotated empirical orthogonal function (REOF) methods. We also analyzed the relationship between the rotated principal component time series (RPCs) and 74 circulation indices...
November 25, 2016: Science of the Total Environment
https://www.readbyqxmd.com/read/27893287/hepatitis-e-virus-in-wild-boar-in-northwest-poland-sensitivity-of-methods-of-detection
#16
Samart Dorn-In, Karin Schwaiger, Magdalena Twarużek, Jan Grajewski, Christoph Gottschalk, Manfred Gareis
In northwest Poland, 163 blood and 53 fecal samples of wild boars were collected in winter 2012/13 and 2013/14. All blood samples were tested for the presence of hepatitis E virus (HEV) ribonucleic acid (RNA) by two reverse transcription-polymerase chain reaction (RT-PCR) based methods and by anti-HEV IgG enzyme-linked immunosorbent assay (ELISA). About 17.2% of blood samples were seropositive. One-step nested RT-PCR turned out to be too insensitive (11.6% were positive). Therefore a two-step nested RT-PCR was applied where 25...
November 28, 2016: Foodborne Pathogens and Disease
https://www.readbyqxmd.com/read/27888383/relationships-between-blood-mercury-levels-reproduction-and-return-rate-in-a-small-seabird
#17
Ingrid L Pollet, Marty L Leonard, Nelson J O'Driscoll, Neil M Burgess, Dave Shutler
Mercury (Hg) is a ubiquitous heavy metal that occurs naturally in the environment, but its levels have been supplemented for decades by a variety of human activities. Mercury can have serious deleterious effects on a variety of organisms, with top predators being particularly susceptible because methylmercury bioaccumulates and biomagnifies in food webs. Among birds, seabirds can have especially high levels of Hg contamination and Leach's storm-petrels (Oceanodroma leucorhoa), in particular, have amongst the highest known levels...
November 25, 2016: Ecotoxicology
https://www.readbyqxmd.com/read/27885615/the-white-mullet-mugil-curema-as-biological-indicator-to-assess-environmental-stress-in-tropical-coastal-lagoons
#18
Alejandra García-Gasca, Julián Ríos-Sicairos, Rubí Hernández-Cornejo, Isabel Cunha, Jesús N Gutiérrez, Héctor Plascencia-González, Luz María García de la Parra, Selene Abad-Rosales, Miguel Betancourt-Lozano
Several coastal lagoons and estuaries in Mexico receive untreated domestic and industrial discharges which contain complex mixtures of contaminants. In order to assess the effects of chemical contamination, we used the White mullet (Mugil curema) as biological indicator. We worked in two estuaries located in Northwest Mexico: Urias (highly polluted) and Teacapan (less polluted, therefore used as reference site). We measured several endpoints at different levels of biological organization: vitellogenin transcription in males as biomarker of estrogenic contamination, as well as reproductive, morphological (deformities), morphometric, and meristic parameters...
December 0: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/27882444/genomic-characterization-of-a-wild-bird-origin-pigeon-paramyxovirus-type-1-ppmv-1-first-isolated-in-the-northwest-region-of-china
#19
Xinglong Wang, Shanhui Ren, Xiangwei Wang, Chong Yang Wang, Mengfei Fan, Yanqing Jia, Xiaolong Gao, Huan Liu, Sa Xiao, Zengqi Yang
Pigeon paramyxovirus type-1(PPMV-1) is an enzootic in pigeon flocks and causes severe economic losses in the poultry industry in many countries. A PPMV-1 isolate, abbreviated as PPMV-1/QL-01/CH/15, was isolated from a great spotted woodpecker in the northwest region of China in 2015. The complete genome was sequenced, and the results showed that the virus genome was 15,192 nt in length, in the gene arrangement 3'-NP-P-M-F-HN-L-5'. Several amino acid mutations were identified in the functional domains of the F and HN proteins...
November 23, 2016: Archives of Virology
https://www.readbyqxmd.com/read/27878536/gendered-vulnerabilities-and-grassroots-adaptation-initiatives-in-home-gardens-and-small-orchards-in-northwest-mexico
#20
Stephanie Buechler
With the retreat of the state under neoliberalism, the lack of (or negligible) government and non-governmental support reasserts grassroots initiatives as a global-change strategy. A feminist political ecology approach and the concept of adverse inclusion were used to facilitate an analysis of social differences shaping local-level adaptive responses. Adaptive responses of small farmers in the border village of San Ignacio, Sonora, Mexico, who are increasingly vulnerable to climate change, water scarcity, and changing labor markets were studied...
December 2016: Ambio
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