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Development of an ionic liquid based dispersive liquid-liquid microextraction method for the analysis of polycyclic aromatic hydrocarbons in water samples 2009 Dpto. Quimica Analitica, Nutricion y Bromatologia, Instituto de Investigacion y Analisis Alimentario, Universidad de Santiago de Compostela, 15782 Santiago de Compostela, Spain.
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Print(0)
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Journal Article
Periodical, Full
Journal of chromatography.A
Periodical, Abbrev.
J.Chromatogr.A
Pub Date Free Form
4-Sep
Volume
1216
Issue
36
Start Page
6356
Other Pages
6364
Notes
LR: 20131121; JID: 9318488; 0 (1-butyl-3-methylimidazolium hexafluorophosphate); 0 (1-octyl-3-methylimidazolium hexafluorophosphate); 0 (Imidazoles); 0 (Ionic Liquids); 0 (Polycyclic Hydrocarbons, Aromatic); 0 (Solvents); 0 (Water Pollutants, Chemical); 0
Place of Publication
Netherlands
ISSN/ISBN
1873-3778; 0021-9673
Accession Number
PMID: 19646707
Language
eng
SubFile
Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
10.1016/j.chroma.2009.07.032 [doi]
Output Language
Unknown(0)
PMID
19646707
Abstract
A simple, rapid and efficient method, ionic liquid based dispersive liquid-liquid microextraction (IL-DLLME), has been developed for the first time for the determination of 18 polycyclic aromatic hydrocarbons (PAHs) in water samples. The chemical affinity between the ionic liquid (1-octyl-3-methylimidazolium hexafluorophosphate) and the analytes permits the extraction of the PAHs from the sample matrix also allowing their preconcentration. Thus, this technique combines extraction and concentration of the analytes into one step and avoids using toxic chlorinated solvents. The factors affecting the extraction efficiency, such as the type and volume of ionic liquid, type and volume of disperser solvent, extraction time, dispersion stage, centrifuging time and ionic strength, were optimised. Analysis of extracts was performed by high performance liquid chromatography (HPLC) coupled with fluorescence detection (Flu). The optimised method exhibited a good precision level with relative standard deviation values between 1.2% and 5.7%. Quantification limits obtained for all of these considered compounds (between 0.1 and 7 ng L(-1)) were well below the limits recommended in the EU. The extraction yields for the different compounds obtained by IL-DLLME, ranged from 90.3% to 103.8%. Furthermore, high enrichment factors (301-346) were also achieved. The extraction efficiency of the optimised method is compared with that achieved by liquid-liquid extraction. Finally, the proposed method was successfully applied to the analysis of PAHs in real water samples (tap, bottled, fountain, well, river, rainwater, treated and raw wastewater).
Descriptors
Analytic Sample Preparation Methods, Chromatography, High Pressure Liquid, Imidazoles, Ionic Liquids, Microchemistry/methods, Osmolar Concentration, Polycyclic Hydrocarbons, Aromatic/analysis, Rain/chemistry, Reproducibility of Results, Rivers/chemistry, Solvents, Time Factors, Water/chemistry, Water Pollutants, Chemical/analysis
Links
Book Title
Database
Publisher
Data Source
Authors
Pena,M. T., Casais,M. C., Mejuto,M. C., Cela,R.
Original/Translated Title
URL
Date of Electronic
20090721
PMCID
Editors
The role of persistent foramen ovale and other shunts in decompression illness 2015 Dr Wilmshurst was Guest Speaker at the SPUMS Annual Scienti fi c Meeting, Bali, May 2014, Consultant Cardiologist, Royal Stoke University Hospital, Stoke-on-Trent ST4 6QG, UK, E-mail: peter.wilmshurst@tiscali.co.uk, Phone: +44-(0)1782-675982.
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Diving and hyperbaric medicine
Periodical, Abbrev.
Diving.Hyperb.Med.
Pub Date Free Form
Jun
Volume
45
Issue
2
Start Page
98
Other Pages
104
Notes
JID: 101282742; OTO: NOTNLM; 2015/03/11 [received]; 2015/04/26 [accepted]; ppublish
Place of Publication
Australia
ISSN/ISBN
1833-3516; 1833-3516
Accession Number
PMID: 26165532
Language
eng
SubFile
Journal Article; Review; IM
DOI
Output Language
Unknown(0)
PMID
26165532
Abstract
A persistent foramen ovale (PFO) and other types of right-to-left shunts are associated with neurological, cutaneous and cardiovascular decompression illness (DCI). A right-to-left shunt is particularly likely to be implicated in causation when these types of DCI occur after dives that are not provocative. It is believed that venous nitrogen bubbles that form after decompression pass through the shunt to circumvent the lung fi lter and invade systemic tissues supersaturated with nitrogen (or other inert gas) and as a result there is peripheral ampli fi cation of bubble emboli in those tissues. Approximately a quarter of the population have a PFO, but only a small proportion of the population with the largest right-to-left shunts are at high risk of shunt-mediated DCI. The increased risk of DCI in people with migraine with aura is because migraine with aura is also associated with right-to-left shunts and this increased risk of DCI appears to be con fi ned to those with a large PFO or other large shunt. Various ultrasound techniques can be used to detect and assess the size of right-to-left shunts by imaging the appearance of bubble contrast in the systemic circulation after intravenous injection. In divers with a history of shunt-mediated DCI, methods to reduce the risk of recurrence include cessation of diving, modi fi cation of future dives to prevent venous bubble liberation and transcatheter closure of a PFO.
Descriptors
Links
Book Title
Database
Publisher
Data Source
Authors
Wilmshurst,P.T.
Original/Translated Title
URL
Date of Electronic
PMCID
Editors
An overview of smoking practices in Pakistan 2015 Dr. Noreen Shah, MBBS, MAMS (Austria), Senior Lecturer, Department of Community Medicine, Khyber Girls Medical College, Peshawar, Pakistan.; Dr. Saad Siddiqui, MBBS (AKU), Resident, Department of Radiology, The Aga Khan University, Karachi, Pakistan.
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Pakistan journal of medical sciences
Periodical, Abbrev.
Pak.J.Med.Sci.
Pub Date Free Form
Mar-Apr
Volume
31
Issue
2
Start Page
467
Other Pages
470
Notes
LR: 20150625; JID: 100913117; OID: NLM: PMC4476364; OTO: NOTNLM; 2014/11/08 [received]; 2015/01/05 [accepted]; ppublish
Place of Publication
Pakistan
ISSN/ISBN
1682-024X; 1681-715X
Accession Number
PMID: 26101513
Language
eng
SubFile
Journal Article; Review
DOI
10.12669/pjms.312.6816 [doi]
Output Language
Unknown(0)
PMID
26101513
Abstract
Smoking remains a major player in morbidity and mortality worldwide. It is a matter of immense public health importance as single leading cause of preventable deaths. The aim of this study was to assess smoking practices that prevail across Pakistan & Attitude of people towards this issue. We conducted an extensive search on major databases as well as search of bibliography of published literature for studies assessing Attitudes and Practices of tobacco smoking that prevail across Pakistan. Data from available studies was abstracted and utilized in preparation of this manuscript. After screening of 613 articles, we were able to identify 22 studies matching our criteria for inclusion. Majority of studies reported adolescence as time of initiation. Average national prevalence was 21.6%. A significant portion of smokers comprised of females. The prevalence of smoking in healthcare professionals ranged from 32 - 37%. Passive smoking was a major contributor of tobacco exposure. Prevalence of 'Shisha' use was 33%. Smoking continues to be a major Public Health issue in Pakistan. The prevalence in healthcare professionals and adolescents is alarming. Adequate measures need to be taken to ensure its control.
Descriptors
Links
Book Title
Database
Publisher
Data Source
Authors
Shah,N., Siddiqui,S.
Original/Translated Title
URL
Date of Electronic
PMCID
PMC4476364
Editors
Sensitization of Candida albicans biofilms to various antifungal drugs by cyclosporine A 2012 DST-FIST Sponsored School of Life Sciences, SRTM University, Nanded, India.
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Annals of clinical microbiology and antimicrobials
Periodical, Abbrev.
Ann.Clin.Microbiol.Antimicrob.
Pub Date Free Form
4-Oct
Volume
11
Issue
Start Page
27
Other Pages
0711-11-27
Notes
LR: 20150222; JID: 101152152; 0 (Antifungal Agents); 0 (Echinocandins); 0 (Pyrimidines); 0 (Triazoles); 1400-61-9 (Nystatin); 7XU7A7DROE (Amphotericin B); 83HN0GTJ6D (Cyclosporine); 8VZV102JFY (Fluconazole); F0XDI6ZL63 (caspofungin); JFU09I87TR (Voriconaz
Place of Publication
England
ISSN/ISBN
1476-0711; 1476-0711
Accession Number
PMID: 23035934
Language
eng
SubFile
Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
10.1186/1476-0711-11-27 [doi]
Output Language
Unknown(0)
PMID
23035934
Abstract
BACKGROUND: Biofilms formed by Candida albicans are resistant towards most of the available antifungal drugs. Therefore, infections associated with Candida biofilms are considered as a threat to immunocompromised patients. Combinatorial drug therapy may be a good strategy to combat C. albicans biofilms. METHODS: Combinations of five antifungal drugs- fluconazole (FLC), voriconazole (VOR), caspofungin (CSP), amphotericin B (AmB) and nystatin (NYT) with cyclosporine A (CSA) were tested in vitro against planktonic and biofilm growth of C. albicans. Standard broth micro dilution method was used to study planktonic growth, while biofilms were studied in an in vitro biofilm model. A chequerboard format was used to determine fractional inhibitory concentration indices (FICI) of combination effects. Biofilm growth was analyzed using XTT-metabolic assay. RESULTS: MICs of various antifungal drugs for planktonic growth of C. albicans were lowered in combination with CSA by 2 to 16 fold. Activity against biofilm development with FIC indices of 0.26, 0.28, 0.31 and 0.25 indicated synergistic interactions between FLC-CSA, VOR-CSA, CSP-CSA and AmB-CSA, respectively. Increase in efficacy of the drugs FLC, VOR and CSP against mature biofilms after addition of 62.5 mug/ml of CSA was evident with FIC indices 0.06, 0.14 and 0.37, respectively. CONCLUSIONS: The combinations with CSA resulted in increased susceptibility of biofilms to antifungal drugs. Combination of antifungal drugs with CSA would be an effective prophylactic and therapeutic strategy against biofilm associated C. albicans infections.
Descriptors
Links
Book Title
Database
Publisher
Data Source
Authors
Shinde,R.B., Chauhan,N.M., Raut,J.S., Karuppayil,S.M.
Original/Translated Title
URL
Date of Electronic
20121004
PMCID
PMC3508915
Editors
Prevalence and predictors of nonobstructive coronary artery disease identified with coronary angiography in contemporary clinical practice 2014 Duke Clinical Research Institute, Duke University, Durham, NC. Electronic address: manesh.patel@duke.edu.; Duke Clinical Research Institute, Duke University, Durham, NC.; VA Eastern Colorado Health Care System/University of Colorado School of Medicine, De
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
American Heart Journal
Periodical, Abbrev.
Am.Heart J.
Pub Date Free Form
Jun
Volume
167
Issue
6
Start Page
846
Other Pages
5200
Notes
CI: Copyright (c) 2014; GR: HHSA290201000007I/PHS HHS/United States; JID: 0370465; 2013/08/09 [received]; 2014/03/07 [accepted]; 2014/03/14 [aheadofprint]; ppublish
Place of Publication
United States
ISSN/ISBN
1097-6744; 0002-8703
Accession Number
PMID: 24890534
Language
eng
SubFile
Journal Article; Research Support, U.S. Gov't, P.H.S.; AIM; IM
DOI
10.1016/j.ahj.2014.03.001 [doi]
Output Language
Unknown(0)
PMID
24890534
Abstract
BACKGROUND: Guidelines recommend noninvasive tests (NITs) to risk stratify and identify patients with higher likelihood of coronary artery disease (CAD) prior to elective coronary angiography. However, a high percentage of patients are found to have nonobstructive CAD. We aimed to understand the relationship between patient characteristics, NIT findings, and the likelihood of nonobstructive CAD. METHODS: Patients undergoing elective catheterization without history of CAD were identified from 1,128 hospitals in National Cardiovascular Data Registry's CathPCI Registry between July 2009 and December 2011. Noninvasive tests included stress electrocardiogram, stress echocardiogram, stress radionuclide, stress cardiac magnetic resonance, and computed tomographic angiography. Patient demographics, risk factors, symptoms, and NIT results were correlated with the presence of nonobstructive CAD, defined as all native coronary stenoses
Descriptors
Links
Book Title
Database
Publisher
Mosby, Inc
Data Source
Authors
Patel,M.R., Dai,D., Hernandez,A.F., Douglas,P.S., Messenger,J., Garratt,K.N., Maddox,T.M., Peterson,E.D., Roe,M.T.
Original/Translated Title
URL
Date of Electronic
20140314
PMCID
Editors
Affecting perceptions of harm and addiction among college waterpipe tobacco smokers 2011 Duke University School of Nursing, 307 Trent Dr., Durham, NC 27710, USA. Isaac.Lipkus@Duke.edu
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco
Periodical, Abbrev.
Nicotine Tob.Res.
Pub Date Free Form
Jul
Volume
13
Issue
7
Start Page
599
Other Pages
610
Notes
LR: 20160527; GR: P30 DA023026/DA/NIDA NIH HHS/United States; GR: P30 DA023026/DA/NIDA NIH HHS/United States; GR: R01 CA114389/CA/NCI NIH HHS/United States; JID: 9815751; OID: NLM: PMC3129239; 2011/04/06 [aheadofprint]; ppublish
Place of Publication
England
ISSN/ISBN
1469-994X; 1462-2203
Accession Number
PMID: 21471304
Language
eng
SubFile
Journal Article; Research Support, N.I.H., Extramural; IM
DOI
10.1093/ntr/ntr049 [doi]
Output Language
Unknown(0)
PMID
21471304
Abstract
INTRODUCTION: The spread of waterpipe tobacco use among youth may be due in part to perceptions that waterpipe tobacco use is safer than other tobacco products, such as cigarettes. In two pilot studies, we sought to modify college waterpipe smokers' perceived risks and worry about waterpipe tobacco smoking. METHODS: We conducted two web-based studies that varied whether college waterpipe users received information on (a) spread of and use of flavored tobacco in waterpipe and (b) harms of waterpipe smoking. Study 1 (N = 91) tested the "incremental" effects on perceptions of risk and worry of adding information about harms of waterpipe smoking to information on the spread of waterpipe and use of flavorings in the tobacco. Study 2 (N = 112) tested the effects on perceptions of risk and worry of reviewing information about harms of waterpipe smoking compared to a no information control group. In Study 1 only, we assessed as part of a 6-month follow-up (n = 70) the percentage of participants who reported no longer using waterpipe. RESULTS: Pooling data from both studies, participants who received information about the harms of waterpipe smoking reported greater perceived risk and worry about harm and addiction and expressed a stronger desire to quit. In Study 1, 62% of participants in the experimental group versus 33% in the control group reported having stopped waterpipe use. CONCLUSIONS: These are the first studies to show that perceptions of addiction and harm from waterpipe use can be modified using minimally intensive interventions; such interventions show promise at decreasing waterpipe use.
Descriptors
Links
Book Title
Database
Publisher
Data Source
Authors
Lipkus,I.M., Eissenberg,T., Schwartz-Bloom,R.D., Prokhorov,A.V., Levy,J.
Original/Translated Title
URL
Date of Electronic
20110406
PMCID
PMC3129239
Editors
Assessing and Predicting Susceptibility to Waterpipe Tobacco Use Among College Students 2015 Duke University School of Nursing, Durham, NC; isaac.lipkus@duke.edu.; Department of Biostatistical Sciences, Wake Forest School of Medicine, Winston-Salem, NC;; Department of Biostatistical Sciences, Wake Forest School of Medicine, Winston-Salem, NC;; De
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Nicotine & tobacco research : official journal of the Society for Research on Nicotine and Tobacco
Periodical, Abbrev.
Nicotine Tob.Res.
Pub Date Free Form
Sep
Volume
17
Issue
9
Start Page
1120
Other Pages
1125
Notes
LR: 20150826; CI: (c) The Author 2014; GR: R01 CA141643/CA/NCI NIH HHS/United States; GR: R01CA141643/CA/NCI NIH HHS/United States; JID: 9815751; OID: NLM: PMC4542741 [Available on 09/01/16]; PMCR: 2016/09/01 00:00; 2014/06/30 [received]; 2014/12/15 [acce
Place of Publication
England
ISSN/ISBN
1469-994X; 1462-2203
Accession Number
PMID: 25542922
Language
eng
SubFile
Journal Article; Research Support, N.I.H., Extramural; IM
DOI
10.1093/ntr/ntu336 [doi]
Output Language
Unknown(0)
PMID
25542922
Abstract
INTRODUCTION: College youth susceptible to waterpipe tobacco smoking (WTS) represent an important target to intervene upon in order to prevent their uptake of this product. This study examined the performance of a 4-item susceptibility measure to WTS to predict future waterpipe use and correlates of susceptibility. METHODS: A cohort of college students from 11 university campuses in North Carolina and Virginia completed an online survey in 2012 and again in 2013 that assessed WTS susceptibility and subsequent waterpipe use. Tobacco use, marijuana use, binge drinking, and sensation seeking were also assessed. RESULTS: Overall, 964 students who reported having never used waterpipe tobacco in 2012 completed the online surveys both years. Overall, about 27% of college youth were susceptible to WTS each year. Participants susceptible in 2012 were 2.5 times more likely to report having used waterpipe tobacco the subsequent year than non-susceptible participants after controlling for significant correlates of waterpipe use. Correlates of susceptibility were: being male, past 30 day cigarette smoking, use of other tobacco products, binge drinking and marijuana use, as well as higher sensation seeking. CONCLUSIONS: A 4-item WTS susceptibility measure predicts future WTS. This measure can be used to identify and intervene upon susceptible college youth to curb further exploration of WTS. Indeed, a nontrivial proportion of college students found susceptible go on to use waterpipe tobacco within a year.
Descriptors
Links
Book Title
Database
Publisher
. Published by Oxford University Press on behalf of the Society for Research on Nicotine and Tobacco
Data Source
Authors
Lipkus,I.M., Reboussin,B.A., Wolfson,M., Sutfin,E.L.
Original/Translated Title
URL
Date of Electronic
20141226
PMCID
PMC4542741
Editors
Association between felt ambivalence and the desire to quit waterpipe use among college students 2016 Duke University School of Nursing, USA isaac.lipkus@duke.edu.; Duke University School of Nursing, USA.
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Journal of health psychology
Periodical, Abbrev.
J.Health.Psychol.
Pub Date Free Form
27-Mar
Volume
Issue
Start Page
Other Pages
Notes
LR: 20160331; CI: (c) The Author(s) 2016; JID: 9703616; OTO: NOTNLM; aheadofprint
Place of Publication
ISSN/ISBN
1461-7277; 1359-1053
Accession Number
PMID: 27020085
Language
ENG
SubFile
JOURNAL ARTICLE
DOI
1359105316636948 [pii]
Output Language
Unknown(0)
PMID
27020085
Abstract
College waterpipe tobacco smokers who feel more ambivalence, that is, conflicted about its use, may have a stronger desire to quit. Using baseline survey data of 315 college waterpipe smokers, we examined this relationship. While frequency of feeling ambivalence was low, greater ambivalence was related with desire to quit (r = .46,p
Descriptors
Links
Book Title
Database
Publisher
Data Source
Authors
Lipkus,I.M., Noonan,D.
Original/Translated Title
URL
Date of Electronic
20160327
PMCID
Editors
Relationships among factual and perceived knowledge of harms of waterpipe tobacco, perceived risk, and desire to quit among college users 2014 Duke University School of Nursing, USA Isaac.lipkus@duke.edu.; Virginia Commonwealth University, USA.; Duke University Medical Center, USA.; University of Texas, USA.; Duke University School of Nursing, USA.
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Journal of health psychology
Periodical, Abbrev.
J.Health.Psychol.
Pub Date Free Form
Dec
Volume
19
Issue
12
Start Page
1525
Other Pages
1535
Notes
LR: 20150601; CI: (c) The Author(s) 2013; GR: P30 DA023026/DA/NIDA NIH HHS/United States; GR: P30 DA023026/DA/NIDA NIH HHS/United States; GR: R01 CA114389/CA/NCI NIH HHS/United States; GR: R01 CA114389/CA/NCI NIH HHS/United States; JID: 9703616; NIHMS6639
Place of Publication
England
ISSN/ISBN
1461-7277; 1359-1053
Accession Number
PMID: 23928987
Language
eng
SubFile
Journal Article; Research Support, N.I.H., Extramural; IM
DOI
10.1177/1359105313494926 [doi]
Output Language
Unknown(0)
PMID
23928987
Abstract
Waterpipe tobacco smoking is increasing in the United States among college students. Through a web-based survey, we explored associations among factual and perceived knowledge, perceived risks and worry about harm and addiction, and desire to quit among 316 college waterpipe tobacco smoking users. Overall, factual knowledge of the harm of waterpipe tobacco smoking was poor, factual and perceived knowledge was weakly correlated, both forms of knowledge were related inconsistently to perceived risks and worry, and neither form of knowledge was associated with the desire to quit. Findings provide preliminary insights as to why knowledge gaps may not predict cessation among waterpipe users.
Descriptors
Links
Book Title
Database
Publisher
Data Source
Authors
Lipkus,I.M., Eissenberg,T., Schwartz-Bloom,R.D., Prokhorov,A.V., Levy,J.
Original/Translated Title
URL
Date of Electronic
20130808
PMCID
PMC4358735
Editors
Heavy metal determination of house dust in Adapazari, Turkey, after earthquake 2002 Dundar, M.S., Sakarya University, Fen-Edeb. Fakültesi, Kimya Bölümü, TR-54100 Mithatpasa-Adapazari, Turkey
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Trace Elements and Electrolytes
Periodical, Abbrev.
Trace Elem.Electrolytes
Pub Date Free Form
2002/
Volume
19
Issue
2
Start Page
55
Other Pages
58
Notes
Place of Publication
ISSN/ISBN
0946-2104
Accession Number
Language
SubFile
DOI
Output Language
Unknown(0)
PMID
Abstract
The present paper reports on heavy metal pollution in house dust samples collected after the 1999 Turkish earthquake. A total of 80 samples were collected in predetermined houses and control samples collected from non-effected areas throughout Adapazari, Turkey, after the earthquake (August 17, 1999) and analyzed for Pb, Cd, Cr, Cu, Zn and Ni using the flame atomic absorption spectrophotometric method after wet digestion. The sampling sites were divided into 8 categories, including the control site. Concentration of heavy metals in such house dusts are extremely variable. Dust levels were observed to increase a lot after earthquake because of the reconstruction of city roads, sewage and water pipes, demolishing of damaged buildings, etc. Thus, the results showed that the mean levels of Pb, Cd, Cr, Cu, Zn and Ni in houses on the streets with heavy traffic increased.
Descriptors
cadmium, chromium, copper, heavy metal, lead, nickel, zinc, air pollution, article, atomic absorption spectrometry, developing country, earthquake, house dust, priority journal, sampling, traffic, Turkey (republic)
Links
Book Title
Database
Embase
Publisher
Data Source
Embase
Authors
Dundar,M. S., Altundag,H.
Original/Translated Title
URL
Date of Electronic
PMCID
Editors