keyword
MENU ▼
Read by QxMD icon Read
search

Season

keyword
https://www.readbyqxmd.com/read/28320120/seasonal-variations-of-25-oh-vitamin-d-serum-levels-are-associated-with-clinical-disease-activity-in-multiple-sclerosis-patients
#1
Christina Hartl, Viola Obermeier, Lisa Ann Gerdes, Mathias Brügel, Rüdiger von Kries, Tania Kümpfel
Low 25-hydroxy vitamin D (25-[OH]-D) serum concentrations have been associated with higher disease activity in multiple sclerosis (MS) patients. In a large cross-sectional study we assessed the vitamin D status in MS patients in relation to seasonality and relapse rate. 415 MS-patients (355 relapsing-remitting MS and 60 secondary-progressive, 282 female, mean age 39.1years) of whom 25-(OH)-D serum concentrations were determined at visits between 2010 and 2013 were included in the study. All clinical data including relapse at visit and expanded disability status scale were recorded in a standardized manner by an experienced neurologist...
April 15, 2017: Journal of the Neurological Sciences
https://www.readbyqxmd.com/read/28319887/physico-chemical-and-genotoxicity-analysis-of-guaribas-river-water-in-the-northeast-brazil
#2
João Marcelo de Castro E Sousa, Ana Paula Peron, Felipe Cavalcanti Carneiro da Silva, Ellifran Bezerra de Siqueira Dantas, Ataíde de Macedo Vieira Lima, Victor Alves de Oliveira, Leomá Albuquerque Matos, Márcia Fernanda Correia Jardim Paz, Marcus Vinicius Oliveira Barros de Alencar, Muhammad Torequl Islam, Ana Amélia de Carvalho Melo-Cavalcante, Cláudia Costa Bonecker, Horácio Ferreira Júlio
River pollution in Brazil is significant. This study aimed to evaluate the physico-chemical and genotoxic profiles of the Guaribas river water, located in Northeast Brazil (State of Piauí, Brazil). The study conducted during the dry and wet seasons to understand the frequency of pollution throughout the year. Genotoxicity analysis was done with the blood of Oreochromis niloticus by using the comet assay. Water samples were collected from upstream, within and downstream the city Picos. The results suggest a significant (p < 0...
March 3, 2017: Chemosphere
https://www.readbyqxmd.com/read/28319862/multi-phase-distribution-and-comprehensive-ecological-risk-assessment-of-heavy-metal-pollutants-in-a-river-affected-by-acid-mine-drainage
#3
Jianbo Liao, Xuan Ru, Binbin Xie, Wanhui Zhang, Haizhen Wu, Chaofei Wu, Chaohai Wei
To date, there is a lack of a comprehensive research on heavy metals detection and ecological risk assessment in river water, sediments, pore water (PW) and suspended solids (SS). Here, the concentrations of heavy metals, including Cu, Zn, Mn, Cd, Pb and As, and their distribution between the four phases was studied. Samples for analysis were taken from twelve sites of the Hengshi River, Guangdong Province, China, during the rainy and dry seasons. A new comprehensive ecological risk index (CERI) based on considering metal contents, pollution indices, toxicity coefficients and water categories is offered for prediction of potential risk on aquatic organisms...
March 16, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28319762/growth-of-algal-biomass-in-laboratory-and-in-large-scale-algal-photobioreactors-in-the-temperate-climate-of-western-germany
#4
Christina Schreiber, Dominik Behrendt, Gregor Huber, Christian Pfaff, Janka Widzgowski, Bärbel Ackermann, Andreas Müller, Vilém Zachleder, Šárka Moudříková, Peter Mojzeš, Ulrich Schurr, Johan Grobbelaar, Ladislav Nedbal
Growth of Chlorella vulgaris was characterized as a function of irradiance in a laboratory turbidostat (1L) and compared to batch growth in sunlit modules (5-25L) of the commercial NOVAgreen photobioreactor. The effects of variable sunlight and culture density were deconvoluted by a mathematical model. The analysis showed that algal growth was light-limited due to shading by external construction elements and due to light attenuation within the algal bags. The model was also used to predict maximum biomass productivity...
March 7, 2017: Bioresource Technology
https://www.readbyqxmd.com/read/28319719/year-round-phytofiltration-lagoon-assessment-using-pistia-stratiotes-within-a-pilot-plant-scale-biorefinery
#5
Eugenia J Olguín, Daniel A García-López, Ricardo E González-Portela, Gloria Sánchez-Galván
Phytofiltration lagoons are phytoremediation technologies suitable for tropical and sub-tropical regions requiring cost-effective and echo-friendly technologies. A biorefinery of fourth generation has been implemented at pilot plant level in Xalapa, Mexico, and the phytofiltration lagoon, being the first module for provision of treated water and plant biomass for biofuel production plays a key role. The aim of this work was to evaluate the performance of such phytofiltration lagoon with a working volume of 13,000 L for the removal of nutrients from an urban river polluted with domestic wastewater and the biomass productivity of the macrophyte Pistia stratiotes, during five different experimental periods, comprising 42 days each one...
March 16, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28319708/effect-of-application-of-dairy-manure-effluent-and-inorganic-fertilizer-on-nitrogen-leaching-in-clayey-fluvo-aquic-soil-a-lysimeter-study
#6
Jianling Fan, Jiao Xiao, Deyan Liu, Guiping Ye, Jiafa Luo, David Houlbrooke, Seth Laurenson, Jing Yan, Lvjun Chen, Jinping Tian, Weixin Ding
Dairy farm manure and effluent are applied to cropland in China to provide a source of plant nutrients, but there are concerns over its effect on nitrogen (N) leaching loss and groundwater quality. To investigate the effects of land application of dairy manure and effluent on potential N leaching loss, two lysimeter trials were set up in clayey fluvo-aquic soil in a winter wheat-summer maize rotation cropping system on the North China Plain. The solid dairy manure trial included control without N fertilization (CK), inorganic N fertilizer (SNPK), and fresh (RAW) and composted (COM) dairy manure...
March 16, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28319698/the-combined-effect-of-reduced-fossil-fuel-consumption-and-increasing-biomass-combustion-on-athens-air-quality-as-inferred-from-long-term-co-measurements
#7
Myrto Gratsea, Eleni Liakakou, Nikos Mihalopoulos, Anastasios Adamopoulos, Eirini Tsilibari, Evangelos Gerasopoulos
To evaluate the role of biomass burning emissions, and in particular of residential wood heating, as a result of the economic recession in Greece, carbon monoxide (CO) atmospheric concentrations from five (5) stations of the National Air Pollution Monitoring Network in Athens, spanning the period 2000-2015, in conjunction with black carbon (BC) concentrations from the NOA (National Observatory of Athens) station at Thissio were analysed. The contribution of the different sources to the diurnal cycle of these two pollutants is clear, resulting to a morning peak, mainly due to traffic, and a late evening peak attributed both to fossil fuel (traffic plus central heating) and biomass combustion...
March 14, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28319178/inter-nesting-movements-and-habitat-use-of-adult-female-kemp-s-ridley-turtles-in-the-gulf-of-mexico
#8
Donna J Shaver, Kristen M Hart, Ikuko Fujisaki, David Bucklin, Autumn R Iverson, Cynthia Rubio, Thomas F Backof, Patrick M Burchfield, Raul de Jesus Gonzales Diaz Miron, Peter H Dutton, Amy Frey, Jaime Peña, Daniel Gomez Gamez, Hector J Martinez, Jaime Ortiz
Species vulnerability is increased when individuals congregate in restricted areas for breeding; yet, breeding habitats are not well defined for many marine species. Identification and quantification of these breeding habitats are essential to effective conservation. Satellite telemetry and switching state-space modeling (SSM) were used to define inter-nesting habitat of endangered Kemp's ridley turtles (Lepidochelys kempii) in the Gulf of Mexico. Turtles were outfitted with satellite transmitters after nesting at Padre Island National Seashore, Texas, USA, from 1998 through 2013 (n = 60); Rancho Nuevo, Tamaulipas, Mexico, during 2010 and 2011 (n = 11); and Tecolutla, Veracruz, Mexico, during 2012 and 2013 (n = 11)...
2017: PloS One
https://www.readbyqxmd.com/read/28319119/evaluating-the-combined-effects-of-ballast-water-management-and-trade-dynamics-on-transfers-of-marine-organisms-by-ships
#9
Katharine J Carney, Mark S Minton, Kimberly K Holzer, A Whitman Miller, Linda D McCann, Gregory M Ruiz
Global trade by merchant ships is a leading mechanism for the unintentional transfer of marine organisms, including non-indigenous species, to bays and estuaries worldwide. To reduce the likelihood of new invasions, ships are increasingly being required to manage their ballast water (BW) prior to discharge in coastal waters. In the United States, most overseas arrivals have been required to manage BW discharge since 2004, primarily through ballast water exchange (BWE), which flushes out ballast tanks in the open ocean (>200 miles from shore)...
2017: PloS One
https://www.readbyqxmd.com/read/28318790/wood-burning-pollution-in-southern-chile-pm2-5-source-apportionment-using-cmb-and-molecular-markers
#10
Ana M Villalobos, Francisco Barraza, Héctor Jorquera, James J Schauer
Temuco is a mid-size city representative of severe wood smoke pollution in southern Chile; i.e., ambient 24-h PM2.5 concentrations have exceeded 150 μg/m(3) in the winter season and the top concentration reached 372 μg/m(3) in 2010. Annual mean concentrations have decreased but are still above 30 μg/m(3). For the very first time, a molecular marker source apportionment of ambient organic carbon (OC) and PM2.5 was conducted in Temuco. Primary resolved sources for PM2.5 were wood smoke (37.5%), coal combustion (4...
March 16, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28318787/municipal-wastewater-treatment-plant-effluent-induced-effects-on-freshwater-mussel-populations-and-the-role-of-mussel-refugia-in-recolonizing-an-extirpated-reach
#11
Patricia L Gillis, Rodney McInnis, Joseph Salerno, Shane R de Solla, Mark R Servos, Erin M Leonard
Global human population and urbanization continually increase the volume of wastewater entering aquatic environments. Despite efforts to treat these effluents, they contribute a diverse suite of substances that enter watersheds at concentrations that have the potential to elicit adverse effects on aquatic organisms. The relationship between wastewater treatment plant (WWTP) effluent exposure and biological responses within aquatic ecosystems remains poorly understood, especially at the population level. To examine the effect of WWTP effluents on sentinel invertebrates, freshwater mussels were assessed in the Grand River, Ontario, in populations associated with the outfall of a major WWTP...
March 15, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28318771/cross-protection-to-new-drifted-influenza-a-h3-viruses-and-prevalence-of-protective-antibodies-to-seasonal-influenza-during-2014-in-portugal
#12
Raquel Guiomar, Susana Pereira da Silva, Patrícia Conde, Paula Cristóvão, Ana Carina Maia, Pedro Pechirra, Ana Paula Rodrigues, Baltazar Nunes, Luís Milho, Ana Paula Coelho, Aida Fernandes, Paula Caseiro, Fernando Rodrigues, Lurdes Correia, João Pereira-Vaz, Sofia Almeida, Paula Branquinho, Rita Côrte-Real, Regina Viseu, Maria João Peres, Raquel Sanches, Filipa Dantas, Ludovina Freitas, Graça Andrade, Manuel Maurílio, Filomena Caldeira, Rita Cabral Veloso, Luisa Mota-Vieira, Marta Soares, Ana Rita Couto, Jácome Bruges-Armas, Rita Mouro Pinto, Joana Sobrinho Simões, Maria do Rosário Costa, João Tiago Guimarães, Luís Martins, Mário Cunha
INTRODUCTION: Immune profile for influenza viruses is highly changeable over time. Serological studies can assess the prevalence of influenza, estimate the risk of infection, highlight asymptomatic infection rate and can also provide data on vaccine coverage. The aims of the study were to evaluate pre-existing cross-protection against influenza A(H3) drift viruses and to assess influenza immunity in the Portuguese population. MATERIALS AND METHODS: We developed a cross-sectional study based on a convenience sample of 626 sera collected during June 2014, covering all age groups, both gender and all administrative health regions of Portugal...
March 15, 2017: Vaccine
https://www.readbyqxmd.com/read/28318700/effects-of-warming-and-nitrogen-deposition-on-ch4-co2-and-n2o-emissions-in-alpine-grassland-ecosystems-of-the-qinghai-tibetan-plateau
#13
Zhenzhen Zhao, Shikui Dong, Xiaoman Jiang, Shiliang Liu, Hanzhong Ji, Yu Li, Yuhui Han, Wei Sha
Increases in nitrogen (N) deposition along with climate warming can change the dynamics of carbon and nitrogen in the soil, and alter greenhouse gases (GHGs) fluxes. To examine how N deposition and warming affect GHGs (CH4, CO2 and N2O) fluxes in alpine grasslands, we conducted experiments in an alpine meadow (AM), alpine-steppe (AS), and alpine cultivated grassland (CG) on the Qinghai-Tibetan Plateau (QTP). We simulated N deposition by treating soil with ammonium nitrate (NH4NO3) (8kgNha(-1)year(-1)), a warming treatment using an open top chamber (OTC) was carried out, and a combined treatment of warming and N deposition (8kgNha(-1)year(-1)) was conducted...
March 16, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28318692/characterization-and-source-identification-of-nitrogen-in-a-riverine-system-of-monsoon-climate-region-china
#14
Jie Yuan, Siyue Li, Xi Han, Qiuyang Chen, Xiaoli Cheng, Quanfa Zhang
There are increasing concerns in nitrogen (N) pollution worldwide, especially in aquatic ecosystems, and thus quantifying its sources in waterways is critical for pollution prevention and control. In this study, we investigated the spatio-temporal variabilities of inorganic N concentration (i.e., NO3(-), NH4(+)) and total dissolved N (TDN) and identified their sources in waters and suspended matters using an isotopical approach in the Jinshui River, a river with a length of 87km in the monsoon-climate region of China...
March 16, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28318562/mercury-in-suspended-matter-of-the-gulf-of-gda%C3%A5-sk-origin-distribution-and-transport-at-the-land-sea-interface
#15
Agnieszka Jędruch, Urszula Kwasigroch, Magdalena Bełdowska, Karol Kuliński
The coastal regions of inland seas are particularly vulnerable to Hg pollution. An important carrier of toxic Hg in the marine environment is suspended matter originating from multiple sources. The present study was conducted in the Gulf of Gdańsk and its adjoining land in the years 2011-2013. The results indicated that the HgSPM (Hg bound with suspended particulate matter) concentrations varied horizontally and vertically and were dependent on the water dynamics and the composition of organic matter. Conditions favourable for the accumulation of matter and adsorption of reactive gaseous mercury led to increasing HgSPM levels, which are especially hazardous in the case of semi-enclosed areas such as estuaries...
March 16, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28318382/physiologic-parameters-and-their-response-to-handling-stress-in-a-neotropical-migratory-shorebird-during-the-nonbreeding-season
#16
Verónica L D'Amico, María G Palacios, Allan J Baker, Patricia M González, Enrique Madrid, Marcelo Bertellotti
Physiologic traits are promising indicators of population health in the face of rapidly changing environments. We obtained values of diverse physiologic parameters for Two-banded Plovers (Charadrius falklandicus) in coastal sites in Patagonia, Argentina, with the objectives of determining the timeline in which these parameters become affected by the stress of capture and handling and of obtaining reference values for future monitoring of these populations. We analyzed packed cell volume, white blood cell profile, heterophil /lymphocyte ratio, bacterial agglutination titer, and total protein, glucose, triglyceride, and cholesterol levels in apparently healthy birds...
March 20, 2017: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/28318379/prevalence-and-distribution-of-pseudogymnoascus-destructans-in-michigan-bats-submitted-for-rabies-surveillance
#17
Samantha L Darling, Ailam Lim, Julie R Melotti, Daniel J O'Brien, Steven R Bolin
Since 2006, bat populations in North America have suffered devastating mortality from an emerging disease known as white-nose syndrome (WNS). The causal agent of WNS is the fungus Pseudogymnoascus destructans. In April 2014, WNS was discovered in little brown bats ( Myotis lucifugus ) in Michigan, and has since been documented in 12 counties. Because current surveillance for WNS focuses primarily on mine-hibernating species in winter, it is subject geographic, species, and seasonal bias. To investigate species affected and potential associations of gender, seasonal life cycle, and region with P...
March 20, 2017: Journal of Wildlife Diseases
https://www.readbyqxmd.com/read/28318115/microbial-players-and-processes-involved-in-phytoplankton-bloom-utilization-in-the-water-column-of-a-fast-flowing-river-dominated-estuary
#18
Maria W Smith, Lydie Herfort, Caroline S Fortunato, Byron C Crump, Holly M Simon
Fueled by seasonal phytoplankton blooms, the Columbia River estuary is a natural bioreactor for organic matter transformations. Prior metagenome analyses indicated high abundances of diverse Bacteroidetes taxa in estuarine samples containing phytoplankton. To examine the hypothesis that Bacteroidetes taxa have important roles in phytoplankton turnover, we further analyzed metagenomes from water collected along a salinity gradient at 0, 5, 15, 25, and 33 PSU during bloom events. Size fractions were obtained by using a 3-μm prefilter and 0...
March 20, 2017: MicrobiologyOpen
https://www.readbyqxmd.com/read/28317822/-implementation-of-electronic-registry-in-orthodontic-clinic
#19
L S Persin, E I Merzhvinskaya
The paper describes technical and methodological features of electronic registry in orthodontic clinic. The authors elaborated custom made software according to Russian Ministry of Health requirements for medical local nets and databases. The registry allows processing of medical statistics and forming of reports, as well as analyzing medical staff effectiveness and seasonal dynamics of clinical work.
2017: Stomatologii︠a︡
https://www.readbyqxmd.com/read/28317542/overlap-of-latent-pathogens-in-the-botryosphaeriaceae-on-a-native-and-agricultural-host
#20
James W M Mehl, Bernard Slippers, Jolanda Roux, Michael J Wingfield
Some species of the Botryosphaeriaceae are capable of infecting a broad range of host plants. We studied the species diversity of Botryosphaeriaceae associated with marula (Sclerocarya birrea subsp. caffra, Anacardiaceae) trees in South Africa over two seasons, as well as species common to both S. birrea and adjacent mango (Mangifera indica, Anacardiaceae) trees in a subset of sites. Gene flow amongst populations of Botryosphaeriaceae shared on these tree species was tested using microsatellite markers. Twelve species were identified from S...
April 2017: Fungal Biology
keyword
keyword
9290
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"