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https://www.readbyqxmd.com/read/28732338/toxic-organic-substances-and-marker-compounds-in-size-segregated-urban-particulate-matter-implications-for-involvement-in-the-in%C3%A2-vitro-bioactivity-of-the-extractable-organic-matter
#1
Athanasios Besis, Alexandra Tsolakidou, Dimitra Balla, Constantini Samara, Dimitra Voutsa, Anastasia Pantazaki, Theodora Choli-Papadopoulou, Theodore S Lialiaris
Toxic organic substances and polar organic marker compounds, i.e. polychlorinated biphenyls (PCBs), organochlorine pesticides (OCPs), polybrominated diphenyl ethers (PBDEs), polycyclic aromatic hydrocarbons (PAHs) and their nitro-derivatives (N-PAHs), as well as dicarboxylic acids (DCAs) and sugars/sugar anhydrites (S/SAs) were analyzed in size-segregated PM samples (<0.49, 0.49-0.97, 0.97-3 and >3 μm) collected at two urban sites (urban traffic and urban background) during the cold and the warm season...
July 18, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28732335/characteristics-and-source-apportionment-of-pm2-5-during-persistent-extreme-haze-events-in-chengdu-southwest-china
#2
Lulu Li, Qinwen Tan, Yuanhang Zhang, Miao Feng, Yu Qu, Junling An, Xingang Liu
Based on detailed data from Chengdu Plain (CP) from 6 January to 16 January, two typical haze episodes were analyzed to clarify the haze formation mechanism in winter. Weather conditions, chemical compositions, secondary pollutant transformation, optical properties of aerosols, the potential source contribution function (PSCF) and source apportionment were studied. The planetary boundary layer (PBL) height decreased distinctly during the haze episodes and restrained air pollutant vertical dispersion. As the haze worsened, the value of PBL × PM2...
July 18, 2017: Environmental Pollution
https://www.readbyqxmd.com/read/28732319/did-the-dependent-coverage-expansion-increase-risky-substance-use-among-young-adults
#3
Joshua Breslau, Hao Yu, Bing Han, Rosalie L Pacula, Rachel M Burns, Bradley D Stein
BACKGROUND: The dependent coverage expansion (DCE) enacted through the Affordable Care Act increased health insurance coverage among young adults. Increasing insurance coverage in this age group has the potential for unintended consequences on risky substance use. METHODS: Repeated cross-sectional surveys were used to compare change in substance use during the period the DCE was implemented in the 19-25year old target age group (Pre-DCE n=15,772, Post-DCE n=22,719) with contemporaneous change in a slightly older age group that was not targeted by the policy (Pre-DCE=19,851, Post-DCE n=28,157)...
July 14, 2017: Drug and Alcohol Dependence
https://www.readbyqxmd.com/read/28731854/oral-submucous-fibrosis-in-a-school-going-indian-adolescent-boy
#4
Vishal Khandelwal, Hallaswamy V Kambalimath, Naveen B Reddy, Sushma Khandelwal, Vanaja Reddy, Nitu Gupta
A 14-year-old boy presented to our hospital with a chief complaint of difficulty in opening his mouth and a burning sensation on eating spicy food. The oral mucosa showed generalized diffused blanching and he was unable to protrude his tongue. For 6 years he had habitually chewed gutkha - a mixture of betel nut and tobacco for several minutes a day. This oral submucous fibrosis condition is very rare in young patients. The case highlights the link between oral submucous fibrosis and the regular use of areca nut (gutkha) products in a young boy...
July 21, 2017: International Journal of Adolescent Medicine and Health
https://www.readbyqxmd.com/read/28731474/bacterial-transcriptome-remodeling-during-sequential-co-culture-with-a-marine-dinoflagellate-and-diatom
#5
Marine Landa, Andrew S Burns, Selena J Roth, Mary Ann Moran
In their role as primary producers, marine phytoplankton modulate heterotrophic bacterial activities through differences in the types and amounts of organic matter they release. This study investigates the transcriptional response of bacterium Ruegeria pomeroyi, a member of the Roseobacter clade known to affiliate with diverse phytoplankton groups in the ocean, during a shift in phytoplankton taxonomy. The bacterium was initially introduced into a culture of the dinoflagellate Alexandrium tamarense, and then experienced a change in phytoplankton community composition as the diatom Thalassiosira pseudonana gradually outcompeted the dinoflagellate...
July 21, 2017: ISME Journal
https://www.readbyqxmd.com/read/28731355/luminescent-fire-resistant-and-water-proof-ultralong-hydroxyapatite-nanowire-based-paper-for-multimode-anticounterfeiting-applications
#6
Ri-Long Yang, Ying-Jie Zhu, Fei-Fei Chen, Li-Ying Dong, Zhi-Chao Xiong
Counterfeiting of valuable certificates, documents, and banknotes is a serious issue worldwide. As a result, the need for developing novel anticounterfeiting materials is greatly increasing. Herein, we report a new kind of ultralong hydroxyapatite nanowire (HAPNW)-based paper with luminescence, fire resistance, and waterproofness properties that may be exploited for anticounterfeiting applications. In this work, lanthanide-ion-doped HAPNWs (HAPNW:Ln(3+)) with lengths over 100 μm have been synthesized and used as a raw material to fabricating a free-standing luminescent, fire-resistant, water-proof paper through a simple vacuum filtration process...
July 21, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28730972/aoac-smpr-%C3%A2-2017-011-standard-method-performance-requirements-smprs-for-identification-and-quantitation-of-free-alpha-amino-acids-in-dietary-ingredients-and-supplements
#7
Garrett Zielinski, Gisele Atkinson, Sneh Bhandari, Paul Burns, Danielle Citrolo, Christine Farthing, Brandi Glover, Adam Horkey, Holly Johnson, Adam Kuszak, Jeff Lin, J Andreas Lippert, Elizabeth Mudge, Maria Ofitserova, Lars M Reimann, Aniko M Solyom, Darryl M Sullivan, John Szpylka, John Travis, Jason Lynn Wubben, Jinchuan Yang, Hong You, Kurt Young, Scott G Coates
No abstract text is available yet for this article.
July 21, 2017: Journal of AOAC International
https://www.readbyqxmd.com/read/28730896/cannabinoid-hyperemesis-syndrome-potential-mechanisms-for-the-benefit-of-capsaicin-and-hot-water-hydrotherapy-in-treatment
#8
John R Richards, Jeff M Lapoint, Guillermo Burillo-Putze
INTRODUCTION: Cannabinoid hyperemesis syndrome is a clinical disorder that has become more prevalent with increasing use of cannabis and synthetic cannabinoids, and which is difficult to treat. Standard antiemetics commonly fail to alleviate the severe nausea and vomiting characteristic of the syndrome. Curiously, cannabinoid hyperemesis syndrome patients often report dramatic relief of symptoms with hot showers and baths, and topical capsaicin. OBJECTIVES: In this review, we detail the pharmacokinetics and pharmacodynamics of capsaicin and explore possible mechanisms for its beneficial effect, including activation of transient receptor potential vanilloid 1 and neurohumoral regulation...
July 21, 2017: Clinical Toxicology
https://www.readbyqxmd.com/read/28730654/extensive-wildfires-climate-change-and-an-abrupt-state-change-in-subalpine-ribbon-forests-colorado
#9
W John Calder, Bryan Shuman
Ecosystems may shift abruptly when the effects of climate change and disturbance interact, and landscapes with regularly patterned vegetation may be especially vulnerable to abrupt shifts. Here we use a fossil pollen record from a regularly patterned ribbon forest (alternating bands of forests and meadows) in Colorado to examine whether past changes in wildfire and climate produced abrupt vegetation shifts. Comparing the percentages of conifer pollen with sedimentary δ(18) O data (interpreted as an indicator of temperature or snow accumulation) indicates a first-order linear relationship between vegetation composition and climate change with no detectable lags over the past 2500 years (r = 0...
July 21, 2017: Ecology
https://www.readbyqxmd.com/read/28730558/transplantation-sites-for-porcine-islets
#10
Rebecca A Stokes, Denbigh M Simond, Heather Burns, Anita T Patel, Philip J O'Connell, Jenny E Gunton, Wayne J Hawthorne
AIMS/HYPOTHESIS: Xenotransplantation has great potential to provide beta cell replacement and thereby provide a cure for large numbers of people with type 1 diabetes. Crucial to the success of xenotransplantation is establishment of the most viable sites for transplantation. METHODS: We compared porcine islet tissue transplanted into kidney, liver and spleen in pig recipients as assessed by blood glucose levels and IVGTT. RESULTS: Kidney was the superior site for porcine islet tissue transplantation, followed by liver then spleen...
July 21, 2017: Diabetologia
https://www.readbyqxmd.com/read/28730267/phantom-based-standardization-of-ct-angiography-images-for-spot-sign-detection
#11
Andrea Morotti, Javier M Romero, Michael J Jessel, Andrew M Hernandez, Anastasia Vashkevich, Kristin Schwab, Joseph D Burns, Qaisar A Shah, Thomas A Bergman, M Fareed K Suri, Mustapha Ezzeddine, Jawad F Kirmani, Sachin Agarwal, Angela Hays Shapshak, Steven R Messe, Chitra Venkatasubramanian, Katherine Palmieri, Christopher Lewandowski, Tiffany R Chang, Ira Chang, David Z Rose, Wade Smith, Chung Y Hsu, Chun-Lin Liu, Li-Ming Lien, Chen-Yu Hsiao, Toru Iwama, Mohammad Rauf Afzal, Christy Cassarly, Steven M Greenberg, Renee' Hebert Martin, Adnan I Qureshi, Jonathan Rosand, John M Boone, Joshua N Goldstein
PURPOSE: The CT angiography (CTA) spot sign is a strong predictor of hematoma expansion in intracerebral hemorrhage (ICH). However, CTA parameters vary widely across centers and may negatively impact spot sign accuracy in predicting ICH expansion. We developed a CT iodine calibration phantom that was scanned at different institutions in a large multicenter ICH clinical trial to determine the effect of image standardization on spot sign detection and performance. METHODS: A custom phantom containing known concentrations of iodine was designed and scanned using the stroke CT protocol at each institution...
July 20, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28729860/burn-injury-leads-to-increase-in-relative-abundance-of-opportunistic-pathogens-in-the-rat-gastrointestinal-microbiome
#12
Guangtao Huang, Kedai Sun, Supeng Yin, Bei Jiang, Yu Chen, Yali Gong, Yajie Chen, Zichen Yang, Jing Chen, Zhiqiang Yuan, Yizhi Peng
The gastrointestinal microbiome is crucial in human health. With greater than 10 times the cell count of an individual, the gastrointestinal microbiome provides many benefits to the host. It plays an important role in chronic illnesses and immune diseases and also following burns and trauma. This study aimed to determine whether severe burns affect the gastrointestinal microbiome during the early stages of after burn injury and the extent to which the microbiome is disturbed by such burns. We used a rat burn model to investigate any changes occurring in the microbiome after the burn trauma using 16S rRNA sequencing and downstream α-diversity, β-diversity, and taxonomy analysis...
2017: Frontiers in Microbiology
https://www.readbyqxmd.com/read/28729849/nerve-decompression-and-restless-legs-syndrome-a-retrospective-analysis
#13
James C Anderson, Megan L Fritz, John-Michael Benson, Brian L Tracy
INTRODUCTION: Restless legs syndrome (RLS) is a prevalent sleep disorder affecting quality of life and is often comorbid with other neurological diseases, including peripheral neuropathy. The mechanisms related to RLS symptoms remain unclear, and treatment options are often aimed at symptom relief rather than etiology. RLS may present in distinct phenotypes often described as "primary" vs. "secondary" RLS. Secondary RLS is often associated with peripheral neuropathy. Nerve decompression surgery of the common and superficial fibular nerves is used to treat peripheral neuropathy...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/28729641/the-rhizosphere-microbiome-of-burned-holm-oak-potential-role-of-the-genus-arthrobacter-in-the-recovery-of-burned-soils
#14
Antonio J Fernández-González, Pilar Martínez-Hidalgo, José F Cobo-Díaz, Pablo J Villadas, Eustoquio Martínez-Molina, Nicolás Toro, Susannah G Tringe, Manuel Fernández-López
After a forest wildfire, the microbial communities have a transient alteration in their composition. The role of the soil microbial community in the recovery of an ecosystem following such an event remains poorly understood. Thus, it is necessary to understand the plant-microbe interactions that occur in burned soils. By high-throughput sequencing, we identified the main bacterial taxa of burnt holm-oak rhizosphere, then we obtained an isolate collection of the most abundant genus and its growth promoting activities were characterised...
July 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28729571/a-review-of-implant-provision-for-hypodontia-patients-within-a-scottish-referral-centre
#15
B Burns, V Grieg, V Bissell, L Savarrio
Background Implant treatment to replace congenitally missing teeth often involves multidisciplinary input in a secondary care environment. High quality patient care requires an in-depth knowledge of treatment requirements.Aim This service review aimed to determine treatment needs, efficiency of service and outcomes achieved in hypodontia patients. It also aimed to determine any specific difficulties encountered in service provision, and suggest methods to overcome these.Methods Hypodontia patients in the Unit of Periodontics of the Scottish referral centre under consideration, who had implant placement and fixed restoration, or review completed over a 31 month period, were included...
July 21, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28729375/rainforest-initiated-wet-season-onset-over-the-southern-amazon
#16
Jonathon S Wright, Rong Fu, John R Worden, Sudip Chakraborty, Nicholas E Clinton, Camille Risi, Ying Sun, Lei Yin
Although it is well established that transpiration contributes much of the water for rainfall over Amazonia, it remains unclear whether transpiration helps to drive or merely responds to the seasonal cycle of rainfall. Here, we use multiple independent satellite datasets to show that rainforest transpiration enables an increase of shallow convection that moistens and destabilizes the atmosphere during the initial stages of the dry-to-wet season transition. This shallow convection moisture pump (SCMP) preconditions the atmosphere at the regional scale for a rapid increase in rain-bearing deep convection, which in turn drives moisture convergence and wet season onset 2-3 mo before the arrival of the Intertropical Convergence Zone (ITCZ)...
July 20, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28729329/fluids-in-sepsis-and-septic-shock-fissh-protocol-for-a-pilot-randomised-controlled-trial
#17
Bram Rochwerg, Tina Millen, Peggy Austin, Michelle Zeller, Frédérick D'Aragon, Roman Jaeschke, Marie-Hélène Masse, Sangeeta Mehta, Francois Lamontagne, Maureen Meade, Gordon Guyatt, Deborah J Cook
INTRODUCTION: Observational evidence suggests physiological benefits and lower mortality with lower chloride solutions; however, 0.9% saline remains the most widely used fluid worldwide. Given uncertainty regarding the association of lower chloride on mortality, it is unlikely that practice will change without direct randomised clinical trial (RCT) evidence. This pilot RCT will investigate the feasibility of a large-scale trial directly comparing low chloride with high chloride fluids in patients with septic shock...
July 20, 2017: BMJ Open
https://www.readbyqxmd.com/read/28728903/utility-of-magnetic-resonance-imaging-for-the-diagnosis-of-appendicitis-during-pregnancy-a-canadian-experience
#18
Michael Burns, Cameron J Hague, Patrick Vos, Pari Tiwari, Sam M Wiseman
PURPOSE: The objective of the study was to evaluate the performance of magnetic resonance imaging (MRI) for the diagnosis of appendicitis during pregnancy. METHODS: We conducted a retrospective review of all MRI scans performed at our institution, between 2006 and 2012, for the evaluation of suspected appendicitis in pregnant women. Details of the MRI scans performed were obtained from the radiology information system as well as details of any ultrasounds carried out for the same indication...
July 17, 2017: Canadian Association of Radiologists Journal, Journal L'Association Canadienne des Radiologistes
https://www.readbyqxmd.com/read/28728789/evaluation-of-the-environmental-sustainability-of-different-waste-to-energy-plant-configurations
#19
Lidia Lombardi, Ennio A Carnevale
Residual municipal solid waste (MSW) has an average lower heating value higher than 10GJ/Mg in the EU, and can be recovered in modern Waste-to-Energy (WtE) plants, producing combined heat and power (CHP) and reaching high levels of energy recovery. CHP is pinpointed as the best technique for energy recovery from waste. However, in some cases, heat recovery is not technically feasible - due to the absence of a thermal user (industrial plant or district heating) in the vicinity of the WtE plant - and power production remains the sole possibility...
July 17, 2017: Waste Management
https://www.readbyqxmd.com/read/28728459/effect-of-a-12-week-physical-activity-program-on-gross-motor-skills-in-children
#20
Ryan D Burns, You Fu, Yi Fang, James C Hannon, Timothy A Brusseau
This study examined the effects of a 12-week Comprehensive School Physical Activity Program (CSPAP) on gross motor skill development in children from low-income families. Participants were 1,460 school-aged children (mean age = 8.4 ± 1.8 years; 730 girls, 730 boys) recruited from three schools receiving U.S. governmental financial assistance. Students were recruited from grades K-6. CSPAP was implemented over one semester during the 2014-2015 school year. Select gross motor skill items were assessed during each student's physical education class at baseline and at a 12-week follow-up using the Test for Gross Motor Development-2nd Edition (TGMD-2)...
January 1, 2017: Perceptual and Motor Skills
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