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https://www.readbyqxmd.com/read/28535489/large-scale-deposition-of-weathered-oil-in-the-gulf-of-mexico-following-a-deep-water-oil-spill
#1
Isabel C Romero, Gerardo Toro-Farmer, Arne-R Diercks, Patrick Schwing, Frank Muller-Karger, Steven Murawski, David J Hollander
The blowout of the Deepwater Horizon (DWH) drilling rig in 2010 released an unprecedented amount of oil at depth (1,500 m) into the Gulf of Mexico (GoM). Sedimentary geochemical data from an extensive area (∼194,000 km(2)) was used to characterize the amount, chemical signature, distribution, and extent of the DWH oil deposited on the seafloor in 2010-2011 from coastal to deep-sea areas in the GoM. The analysis of numerous hydrocarbon compounds (N = 158) and sediment cores (N = 2,613) suggests that, 1...
May 20, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28535299/analysis-of-bacterial-metagenomes-from-the-southwestern-gulf-of-mexico-for-pathogens-detection
#2
Wendy Escobedo-Hinojosa, Liliana Pardo-López
Little is known about the diversity of bacteria in the Southwestern Gulf of Mexico. The aim of the study illustrated in this perspective was to search for the presence of bacterial pathogens in this ecosystem, using metagenomic data recently generated by the Mexican research group known as the Gulf of Mexico Research Consortium. Several genera of bacteria annotated as pathogens were detected in water and sediment marine samples. As expected, native and ubiquitous pathogenic bacteria genera such as Burkolderia, Halomonas, Pseudomonas, Shewanella, and Vibrio were highly represented...
May 23, 2017: Pathogens and Disease
https://www.readbyqxmd.com/read/28534067/microplastics-in-sediment-cores-from-asia-and-africa-as-indicators-of-temporal-trends-in-plastic-pollution
#3
Yukari Matsuguma, Hideshige Takada, Hidetoshi Kumata, Hirohide Kanke, Shigeaki Sakurai, Tokuma Suzuki, Maki Itoh, Yohei Okazaki, Ruchaya Boonyatumanond, Mohamad Pauzi Zakaria, Steven Weerts, Brent Newman
Microplastics (<5 mm) were extracted from sediment cores collected in Japan, Thailand, Malaysia, and South Africa by density separation after hydrogen peroxide treatment to remove biofilms were and identified using FTIR. Carbonyl and vinyl indices were used to avoid counting biopolymers as plastics. Microplastics composed of variety of polymers, including polyethylene (PE), polypropylene (PP), polystyrene (PS), polyethyleneterphthalates (PET), polyethylene-polypropylene copolymer (PEP), and polyacrylates (PAK), were identified in the sediment...
May 22, 2017: Archives of Environmental Contamination and Toxicology
https://www.readbyqxmd.com/read/28529358/how-do-psychiatrists-in-india-construct-their-professional-identity-a-critical-literature-review
#4
Clement Bayetti, Sushrut Jadhav, Smita N Deshpande
Psychiatric practice in India is marked by an increasing gulf between largely urban-based mental health professionals and a majority rural population. Based on the premise that any engagement is a mutually constructed humane process, an understanding of the culture of psychiatry including social process of local knowledge acquisition by trainee psychiatrists is critical. This paper reviews existing literature on training of psychiatrists in India, the cultural construction of their professional identities and autobiographical reflections...
January 2017: Indian Journal of Psychiatry
https://www.readbyqxmd.com/read/28526900/abundance-of-corals-on-offshore-oil-and-gas-platforms-in-the-gulf-of-mexico
#5
Stephan R Kolian, Paul W Sammarco, Scott A Porter
Scleractinian, octocoral, and antipatharian corals have colonized many of the offshore oil and gas platforms in the northern Gulf of Mexico. We surveyed 25 offshore oil and gas platforms for these cnidarians. Few to no corals were detected on inshore, shallow-water structures at <25 m depth; however, the abundance of corals increased, ranging from 14 to 194/m(2), on platforms in waters deeper ≥25 m. The most common coral encountered were Tubastraea coccinea (Scleractinia) and Telesto spp. (Octocorallia)...
May 19, 2017: Environmental Management
https://www.readbyqxmd.com/read/28526170/body-mass-change-in-flying-homing-pigeons-externally-exposed-to-deepwater-horizon-crude-oil
#6
Cristina R Perez, John K Moye, Dave Cacela, Karen M Dean, Chris A Pritsos
The Deepwater Horizon oil spill contaminated thousands of miles of habitat valuable to hundreds of species of migratory and resident birds of the Gulf of Mexico. Many birds died as a direct result of the oil spill; however, the indirect effects of oil exposure on the flight ability and body condition of birds are difficult to assess in situ. This study utilizes the homing pigeon as a surrogate species for migratory birds to investigate the effect of multiple external oil exposures on the flight performance and body mass change of birds over a series of repeated flights from 136...
May 16, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28525868/biotransformation-of-natural-gas-and-oil-compounds-associated-with-marine-oil-discharges
#7
Odd Gunnar Brakstad, Inger K Almås, Daniel Franklin Krause
Field data from the Deepwater Horizon (DWH) oil spill in the Gulf of Mexico (GoM) suggested that oxidation of gas compounds stimulated biodegradation of oil compounds in the deep sea plume. We performed experiments with local seawater from a Norwegian fjord to examine if the presence of dissolved gas compounds (methane, ethane and propane) affected biodegradation of volatile oil compounds, and if oil compounds likewise affected gas compound oxidation. The results from the experiment showed comparable oil compound biotransformation rates in seawater at 5 °C between seawater with and without soluble gases...
May 11, 2017: Chemosphere
https://www.readbyqxmd.com/read/28522997/biogeographic-comparison-of-lophelia-associated-bacterial-communities-in-the-western-atlantic-reveals-conserved-core-microbiome
#8
Christina A Kellogg, Dawn B Goldsmith, Michael A Gray
Over the last decade, publications on deep-sea corals have tripled. Most attention has been paid to Lophelia pertusa, a globally distributed scleractinian coral that creates critical three-dimensional habitat in the deep ocean. The bacterial community associated with L. pertusa has been previously described by a number of studies at sites in the Mediterranean Sea, Norwegian fjords, off Great Britain, and in the Gulf of Mexico (GOM). However, use of different methodologies prevents direct comparisons in most cases...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28522160/complete-genome-of-a-metabolically-diverse-marine-bacterium-shewanella-japonica-kctc-22435-t
#9
Kyung Mo Kim, Hanna Choe, Byung Kwon Kim, Arshan Nasir
Shewanella japonica KCTC 22435(T) is a facultatively anaerobic, Gram-negative, mesophilic, rod-shaped bacterium isolated from sea water at the Pacific Institute of Bio-organic Chemistry of the Marine Experimental Station, Troitza Bay, Gulf of Peter the Great, Russia. Here, we report the complete genome of S. japonica KCTC 22435(T), which consists of 4,975,677bp (G+C content of 40.80%) with a single chromosome, 4036 protein-coding genes, 97 tRNAs and 8 rRNA operons. Genes detected in the genome reveal that the strain possesses a type II secretion system, cytochrome c family proteins with various numbers of heme-binding motifs, and metabolic pathways for utilizing diverse carbon sources, supporting the potential of KCTC 22435(T) to generate electricity in salinity culture conditions...
May 15, 2017: Marine Genomics
https://www.readbyqxmd.com/read/28520755/neuropsychological-characteristics-of-gulf-war-illness-a-meta-analysis
#10
Patricia A Janulewicz, Maxine H Krengel, Alexis Maule, Roberta F White, Joanna Cirillo, Emily Sisson, Timothy Heeren, Kimberly Sullivan
OBJECTIVE: Gulf War illness (GWI) is a disorder related to military service in the 1991 GW. Prominent symptoms include fatigue, pain and cognitive problems. These symptoms were reported by GW Veterans (GWV) immediately after the war and were eventually incorporated into case definitions of GWI. Neuropsychological function in GW veterans has been studied both among deployed GWV and in GWV diagnosed with GWI. Results have been inconsistent between and across GW populations. The purpose of the present investigation was to better characterize neuropsychological function in this veteran population...
2017: PloS One
https://www.readbyqxmd.com/read/28520719/sex-differences-in-management-and-outcomes-of-patients-with-atrial-fibrillation-in-the-middle-east-gulf-survey-of-atrial-fibrillation-events-gulf-safe
#11
Abdulla Shehab, Mohammad Zubaid, Akshaya Srikanth Bhagavathula, Wafa A Rashed, Alawi A Alsheikh-Ali, Wal AlMahmeed, Kadhim Sulaiman, Ibrahim Al-Zakwani, Ahmed AlQudaimi, Nidal Asaad, Haitham Amin
Differences in the management of atrial fibrillation (AF) between men and women were investigated by using Gulf SAFE data in the Middle East. The study included 2,043 patients presenting with AF to emergency room (ER) were prospectively enrolled and followed for one-year. Women were older, have higher body mass index (BMI), comorbidities, and health complications than men. With regard to management of AF, cardioversion was recommended more often for men (16.7% vs. 9.3%), and underwent electrical cardioversion (2...
2017: PloS One
https://www.readbyqxmd.com/read/28517989/economics-of-cancer-medicines-for-whose-benefit
#12
Bishal Gyawali, Richard Sullivan
Although new cancer drugs are continually getting approved and used, the value that these drugs add is very debatable. Because of the skyrocketing cost of the new drugs, each new approval represents a multibillion market. However, unlike other branches of economics, cancer drugs are intricately associated with socio-political issues, emotional overlay, public pressure, industry manipulation and propaganda. In this article, we review the value added by new cancer drugs and examine the socio-political agenda around them with highlights on the increasing gulf between high-income and low-middle income countries regarding the affordability to these drugs...
April 2017: New Bioethics: a Multidisciplinary Journal of Biotechnology and the Body
https://www.readbyqxmd.com/read/28516228/great-sandeel-hyperoplus-lanceolatus-as-a-putative-transmitter-of-parasite-contracaecum-osculatum-nematoda-anisakidae
#13
K Nadolna-Ałtyn, M Podolska, B Szostakowska
In the Baltic Sea, the great sandeel (Hyperoplus lanceolatus), a common fish species that inhabits sandy substrates, is an important element in the diet of marine mammals, sea birds, and piscivorous fish. It can also act as a transmitter of parasites to its predators, but parasitological studies on this species are limited. We sampled great sandeels in April 2016 in two areas of the southern Baltic Sea (SB-south of Bornholm and GG-the Gulf of Gdansk) and found parasitic anisakid nematodes in both locations...
May 17, 2017: Parasitology Research
https://www.readbyqxmd.com/read/28515856/inter-ethnic-marriages-and-severity-of-coronary-artery-disease-a-multicenter-study-of-arabian-gulf-states
#14
Amin Daoulah, Salem Al-Kaabi, Amir Lotfi, Mushabab Al-Murayeh, S Ali Nasseri, Waleed Ahmed, Salah N Al-Otaibi, Mohamed N Alama, Osama E Elkhateeb, Amy J Plotkin, Majed M Malak, Khalid Alshali, Mohamed Hamzi, Saleh Al Khunein, Mohammed Abufayyah, Alawi A Alsheikh-Ali
AIM: To assess the association of inter-ethnic vs intra-ethnic marriage with severity of coronary artery disease (CAD) in men undergoing angiography. METHODS: We conducted a prospective multicenter, multi-ethnic, cross sectional observational study at five hospitals in Saudi Arabia and the United Arab Emirates, in which we used logistic regression analysis with and without adjustment for baseline differences. RESULTS: Data were collected for 1068 enrolled patients undergoing coronary angiography for clinical indications during the period of April 1(st), 2013 to March 30(th), 2014...
April 26, 2017: World Journal of Cardiology
https://www.readbyqxmd.com/read/28512319/what-the-skull-and-scapular-morphology-of-the-dugong-dugong-dugon-can-tell-us-sex-habitat-and-body-length
#15
Korakot Nganvongpanit, Kittisak Buddhachat, Patcharaporn Kaewmong, Phaothep Cherdsukjai, Kongkiat Kittiwatanawong
The dugong (Dugong dugon, Müller) is an endangered marine mammal species. We examined the relationship between sex, habitat and body length based on the skull and scapular morphology and morphometrics of 81 dugong samples in Thailand. A total of 58 parameters from the skull and scapula (25 from the cranium, 23 from the mandible and 10 from the scapula) as well as tusks were used in this study. Data were analyzed by univariate analysis, followed by discriminant analysis and multivariate linear regression. Here we show, 100% and 98...
May 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28510105/agrochemical-loading-in-drains-and-rivers-and-its-connection-with-pollution-in-coastal-lagoons-of-the-mexican-pacific
#16
Omar Arellano-Aguilar, Miguel Betancourt-Lozano, Gabriela Aguilar-Zárate, Claudia Ponce de Leon-Hill
The state of Sinaloa in Mexico is an industrialized agricultural region with a documented pesticide usage of 700 t year(-1); which at least 17 of the pesticides are classified as moderately to highly toxic. Pollutants in the water column of rivers and drains are of great concern because the water flows into coastal lagoons and nearshore waters and thereby affects aquatic organisms. This study was done in four municipalities in the state of Sinaloa that produce food intensively. To investigate the link between pollution in the lagoons and their proximity to agricultural sites, water was sampled in three coastal lagoons and in the rivers and drains that flow into them...
June 2017: Environmental Monitoring and Assessment
https://www.readbyqxmd.com/read/28507260/reprogramming-cells-from-gulf-war-veterans-into-neurons-to-study-gulf-war-illness
#17
Liang Qiang, Anand N Rao, Gustavo Mostoslavsky, Marianne F James, Nicole Comfort, Kimberly Sullivan, Peter W Baas
Gulf War illness (GWI), which afflicts at least 25% of veterans who served in the 1990-1991 war in the Persian Gulf, is thought to be caused by deployment exposures to various neurotoxicants, including pesticides, anti-nerve gas pills, and low-level nerve agents including sarin/cyclosarin. GWI is a multisymptom disorder characterized by fatigue, joint pain, cognitive problems, and gastrointestinal complaints. The most prominent symptoms of GWI (memory problems, poor attention/concentration, chronic headaches, mood alterations, and impaired sleep) suggest that the disease primarily affects the CNS...
May 16, 2017: Neurology
https://www.readbyqxmd.com/read/28502626/organic-matter-in-surface-sediments-from-the-gulf-of-mexico-and-south-china-sea-compositions-distributions-and-sources
#18
Cuiping Wang, Weili Jia, Dong Wang, Zhiguang Song
Sediments from the Gulf of Mexico (GOM) and the South China Sea (SCS) were analyzed. The low δ(13) C values of pentamethylicosane (PMIs) and fatty acids (-81.3 to -85.2‰) were found in only the S-1 sample collected from the GOM, indicating that methanogenic archaea associated with gas hydrate formation contributed to the sediment organic matter. Principle component analysis of fatty acids suggested that similar microbial biomass was found in the S-1, S-9, O-3 and O-5 samples. However, a comparison of the alkanes, fatty acids, and alcohols indicated that the percentage of n-alkan-2-ols in the S-1 sample from the GOM was the highest, while n-alkanes and n-fatty acids were the highest percentages in other samples from the GOM and SCS...
May 11, 2017: Marine Pollution Bulletin
https://www.readbyqxmd.com/read/28502206/dna-barcoding-and-phylogenetic-analysis-of-five-ascidians-phlebobranchia-distributed-in-gulf-of-mannar-india
#19
Soban Akram, Kaleem M L Arshan, Jaffarali H Abdul
DNA barcoding has played a significant role in biodiversity assessment as well as its conservation. This technique involves sequencing of mitochondrial marker gene including a short COI gene, known as barcode gene. It has proved its efficiency in identifying several species and resolving the limitations incurred during identification through conventional taxonomy. This study involves the use of DNA barcoding of ascidian species belonging to order Phlebobranchia. A total of 14 individuals, covering two families, three genera and five species, were barcoded...
May 13, 2017: Mitochondrial DNA. Part A. DNA Mapping, Sequencing, and Analysis
https://www.readbyqxmd.com/read/28502163/constraining-the-spatial-extent-of-marine-oil-snow-sedimentation-and-flocculent-accumulation-mossfa-following-the-deepwater-horizon-event-using-an-excess-210pb-flux-approach
#20
Patrick Thomas Schwing, Gregg R Brooks, Rebekka Larson, Charles Holmes, Bryan O'Malley, David J Hollander
Following the Deepwater Horizon (DWH) event in 2010, there were several lines of evidence indicating the presence of Marine Oil Snow Sedimentation and Flocculent Accumulation (MOSSFA). A significant amount of marine oil snow formed in the water column of the northern Gulf of Mexico (nGoM), settled rapidly and ultimately accumulated in the sediments of the nGoM. This study utilized a commonly used radioisotope tracer (excess 210Pb, 210Pbxs) from 32 sediment cores collected from 2010-2013 to characterize the spatial extent of MOSSFA on the seafloor...
May 14, 2017: Environmental Science & Technology
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