Image
WTS Database
The subject of interest is:
waterpipe, water-pipe, nargile, narghile, arguileh, arguile, shisha, sheesha, chichi, hubble bubble, hubbly bubbly, goza, hookah, bong
| Title | Pub Year Sort ascending | Author | SearchLink |
|---|---|---|---|
| Using twitter to examine smoking behavior and perceptions of emerging tobacco products | 2013 | Department of Linguistics, University of California, San Diego, La Jolla, CA 92093, USA. | Read more... |
|
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Journal of medical Internet research
Periodical, Abbrev.
J.Med.Internet Res.
Pub Date Free Form
29-Aug
Volume
15
Issue
8
Start Page
e174
Other Pages
Notes
LR: 20150423; GR: U01 CA154280/CA/NCI NIH HHS/United States; GR: U01CA154280/CA/NCI NIH HHS/United States; GR: U54 HL108460/HL/NHLBI NIH HHS/United States; GR: U54HL108460/HL/NHLBI NIH HHS/United States; JID: 100959882; OID: NLM: PMC3758063; OTO: NOTNLM;
Place of Publication
Canada
ISSN/ISBN
1438-8871; 1438-8871
Accession Number
PMID: 23989137
Language
eng
SubFile
Journal Article; Research Support, N.I.H., Extramural; IM
DOI
10.2196/jmir.2534 [doi]
Output Language
Unknown(0)
PMID
23989137
Abstract
BACKGROUND: Social media platforms such as Twitter are rapidly becoming key resources for public health surveillance applications, yet little is known about Twitter users' levels of informedness and sentiment toward tobacco, especially with regard to the emerging tobacco control challenges posed by hookah and electronic cigarettes. OBJECTIVE: To develop a content and sentiment analysis of tobacco-related Twitter posts and build machine learning classifiers to detect tobacco-relevant posts and sentiment towards tobacco, with a particular focus on new and emerging products like hookah and electronic cigarettes. METHODS: We collected 7362 tobacco-related Twitter posts at 15-day intervals from December 2011 to July 2012. Each tweet was manually classified using a triaxial scheme, capturing genre, theme, and sentiment. Using the collected data, machine-learning classifiers were trained to detect tobacco-related vs irrelevant tweets as well as positive vs negative sentiment, using Naive Bayes, k-nearest neighbors, and Support Vector Machine (SVM) algorithms. Finally, phi contingency coefficients were computed between each of the categories to discover emergent patterns. RESULTS: The most prevalent genres were first- and second-hand experience and opinion, and the most frequent themes were hookah, cessation, and pleasure. Sentiment toward tobacco was overall more positive (1939/4215, 46% of tweets) than negative (1349/4215, 32%) or neutral among tweets mentioning it, even excluding the 9% of tweets categorized as marketing. Three separate metrics converged to support an emergent distinction between, on one hand, hookah and electronic cigarettes corresponding to positive sentiment, and on the other hand, traditional tobacco products and more general references corresponding to negative sentiment. These metrics included correlations between categories in the annotation scheme (phihookah-positive=0.39; phi(e-cigs)-positive=0.19); correlations between search keywords and sentiment (chi(2)(4)=414.50, P<.001 cramer="" v="0.36)," and="" the="" most="" discriminating="" unigram="" features="" for="" positive="" negative="" sentiment="" ranked="" by="" log="" odds="" ratio="" in="" machine="" learning="" component="" of="" study.="" automated="" classification="" tasks="" svms="" using="" a="" relatively="" small="" number="" achieved="" best="" performance="" tobacco-related="" from="" unrelated="" tweets="" score="0.85)." conclusions:="" novel="" insights="" available="" through="" twitter="" tobacco="" surveillance="" are="" attested="" high="" prevalence="" sentiment.="" this="" is="" correlated="" complex="" ways="" with="" social="" image="" personal="" experience="" recently="" popular="" products="" such="" as="" hookah="" electronic="" cigarettes.="" several="" apparent="" perceptual="" disconnects="" between="" these="" their="" health="" effects="" suggest="" opportunities="" control="" education.="" finally="" posts="" shows="" promising="" edge="" over="" strictly="" keyword-based="" approaches="" yielding="" an="" improved="" signal-to-noise="" data="" paving="" way="" applications.="">
Descriptors
Links
Book Title
Database
Publisher
Data Source
Authors
Myslin,M., Zhu,S.H., Chapman,W., Conway,M.
Original/Translated Title
URL
Date of Electronic
20130829
PMCID
PMC3758063
Editors
|
|||
| Social norms and attitudes linked to waterpipe use in the Eastern Mediterranean Region | 2013 | Department of Health Promotion and Community Health, Center for Research on Population and Health, Faculty of Health Sciences, American University of Beirut, PO Box 11-0236, Riad El Solh, Beirut 1107 2020, Lebanon.; Department of Health Promotion and Comm | Read more... |
|
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Social science & medicine (1982)
Periodical, Abbrev.
Soc.Sci.Med.
Pub Date Free Form
Dec
Volume
98
Issue
Start Page
125
Other Pages
134
Notes
CI: Copyright (c) 2013; JID: 8303205; OTO: NOTNLM; 2013/03/05 [received]; 2013/07/10 [revised]; 2013/09/06 [accepted]; 2013/09/18 [aheadofprint]; ppublish
Place of Publication
England
ISSN/ISBN
1873-5347; 0277-9536
Accession Number
PMID: 24331890
Language
eng
SubFile
Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
10.1016/j.socscimed.2013.09.007 [doi]
Output Language
Unknown(0)
PMID
24331890
Abstract
Waterpipe tobacco smoking (WTS) is on the rise globally, particularly among vulnerable populations such as youth and women. Increasing knowledge about toxicant yield from waterpipe tobacco and deleterious health effects points to the potential for a health epidemic. WTS is often viewed as a safe alternative to cigarette smoking. Though the original objective of the research was to explore the social norms and attitudes that lead to waterpipe being a more acceptable form of tobacco smoking for women than cigarettes in the Eastern Mediterranean Region, the use of a qualitative research methodology resulted in rich data that helped to understand more generally the phenomenon of waterpipe smoking. Both focus group discussions (FGDs) and key informant interviews were used. Participants were recruited to represent genders, various age groups, socioeconomic status, waterpipe smoking status, and residents of urban and rural areas. A total of 81 FGDs and 38 in-depth interviews were conducted in 2007. Thematic analysis was used to analyze the transcripts. A total of ten themes emerged: socio-cultural norms, gender differences, motivation to smoke, sensory characteristics of waterpipe, metaphors, consumerism, indicators of dependence, comparison between cigarettes and waterpipe, health effect of smoking, and intervention. Results indicated that WTS has socio-cultural dynamics associated with it that are far more pronounced than health considerations. An increased socio-cultural acceptability, the perceived reduced harm and the advent of the fruity Moassel tobacco are among the many reasons for WTS acceptability. Findings point to the need for a unified strategy to address this health issue at all levels of the ecological framework and have important implications for future policy and practice.
Descriptors
Links
Book Title
Database
Publisher
. Published by Elsevier Ltd
Data Source
Authors
Afifi,R., Khalil,J., Fouad,F., Hammal,F., Jarallah,Y., Abu Farhat,H., Ayad,M., Nakkash,R.
Original/Translated Title
URL
Date of Electronic
20130918
PMCID
Editors
|
|||
| Central adiposity is associated with increased risk of esophageal inflammation, metaplasia, and adenocarcinoma: a systematic review and meta-analysis | 2013 | Division of Gastroenterology and Hepatology, Department of Internal Medicine, Mayo Clinic, Rochester, Minnesota. | Read more... |
|
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Clinical gastroenterology and hepatology : the official clinical practice journal of the American Gastroenterological Association
Periodical, Abbrev.
Clin.Gastroenterol.Hepatol.
Pub Date Free Form
Nov
Volume
11
Issue
11
Start Page
1399
Other Pages
14120000000
Notes
LR: 20150426; CI: Copyright (c) 2013; GR: RC4 DK090413/DK/NIDDK NIH HHS/United States; GR: RC4DK090413/DK/NIDDK NIH HHS/United States; JID: 101160775; NIHMS526701; OID: NLM: NIHMS526701; OID: NLM: PMC3873801; OTO: NOTNLM; 2013/03/20 [received]; 2013/05/07
Place of Publication
United States
ISSN/ISBN
1542-7714; 1542-3565
Accession Number
PMID: 23707461
Language
eng
SubFile
Journal Article; Meta-Analysis; Research Support, N.I.H., Extramural; Research Support, Non-U.S. Gov't; Review; IM
DOI
10.1016/j.cgh.2013.05.009 [doi]
Output Language
Unknown(0)
PMID
23707461
Abstract
BACKGROUND & AIMS: Central adiposity has been implicated as a risk factor for Barrett's esophagus (BE) and esophageal adenocarcinoma (EAC), possibly promoting the progression from inflammation to metaplasia and neoplasia. We performed a systematic review and meta-analysis of studies to evaluate the association between central adiposity and erosive esophagitis (EE), BE, and EAC, specifically exploring body mass index (BMI)-independent and gastroesophageal reflux (GERD)-independent effects of central adiposity on the risk of these outcomes. METHODS: We performed a systematic search of multiple databases through March 2013. Studies were included if they reported effect of central adiposity (visceral adipose tissue area, waist-hip ratio, and/or waist circumference) on the risk of EE, BE, and EAC. Summary adjusted odds ratio (aOR) estimates with 95% confidence intervals (CIs), comparing highest category of adiposity with the lowest category of adiposity, were calculated by using random-effects model. RESULTS: Forty relevant articles were identified. Compared with patients with normal body habitus, patients with central adiposity had a higher risk of EE (19 studies; aOR, 1.87; 95% CI, 1.51-2.31) and BE (17 studies; aOR, 1.98; 95% CI, 1.52-2.57). The association between central adiposity and BE persisted after adjusting for BMI (5 studies; aOR, 1.88; 95% CI, 1.20-2.95). Reflux-independent association of central adiposity and BE was observed in studies that used GERD patients as controls or adjusted for GERD symptoms (11 studies; aOR, 2.04; 95% CI, 1.44-2.90). In 6 studies, central adiposity was associated with higher risk of EAC (aOR, 2.51; 95% CI, 1.54-4.06), compared with normal body habitus. CONCLUSIONS: On the basis of a meta-analysis, central adiposity, independent of BMI, is associated with esophageal inflammation (EE), metaplasia (BE), and neoplasia (EAC). Its effects are mediated by reflux-dependent and reflux-independent mechanisms.
Descriptors
Links
Book Title
Database
Publisher
AGA Institute. Published by Elsevier Inc
Data Source
Authors
Singh,S., Sharma,A.N., Murad,M.H., Buttar,N.S., El-Serag,H.B., Katzka,D.A., Iyer,P.G.
Original/Translated Title
URL
Date of Electronic
20130522
PMCID
PMC3873801
Editors
|
|||
| Metatranscriptomic analysis of lactic acid bacterial gene expression during kimchi fermentation | 2013 | Department of Life Science, Chung-Ang University, Seoul 156-756, Republic of Korea. | Read more... |
|
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
International journal of food microbiology
Periodical, Abbrev.
Int.J.Food Microbiol.
Pub Date Free Form
15-May
Volume
163
Issue
3-Feb
Start Page
171
Other Pages
179
Notes
CI: Copyright (c) 2013; JID: 8412849; 0 (RNA, Ribosomal, 16S); 2012/12/24 [received]; 2013/02/26 [revised]; 2013/02/27 [accepted]; 2013/03/06 [aheadofprint]; ppublish
Place of Publication
Netherlands
ISSN/ISBN
1879-3460; 0168-1605
Accession Number
PMID: 23558201
Language
eng
SubFile
Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
10.1016/j.ijfoodmicro.2013.02.022 [doi]
Output Language
Unknown(0)
PMID
23558201
Abstract
Barcode-based 16S rRNA gene pyrosequencing showed that the kimchi microbiome was dominated by six lactic acid bacteria (LAB), Leuconostoc (Lc.) mesenteroides, Lactobacillus (Lb.) sakei, Weissella (W.) koreensis, Lc. gelidum, Lc. carnosum, and Lc. gasicomitatum. Therefore, we used completed genome sequences of representatives of these bacteria to investigate metatranscriptomic gene-expression profiles during kimchi fermentation. Total mRNA was extracted from kimchi samples taken at five time points during a 29 day-fermentation. Nearly all (97.7%) of the metagenome sequences that were recruited on all LAB genomes of GenBank mapped onto the six LAB strains; this high coverage rate indicated that this approach for assessing processes carried out by the kimchi microbiome was valid. Expressed mRNA sequences (as cDNA) were determined using Illumina GA IIx. Assignment of mRNA sequences to metabolic genes using MG-RAST revealed the prevalence of carbohydrate metabolism and lactic acid fermentation. The mRNA sequencing reads were mapped onto genomes of the six LAB strains, which showed that Lc. mesenteroides was most active during the early-stage fermentation, whereas gene expression by Lb. sakei and W. koreensis was high during later stages. However, gene expression by Lb. sakei decreased rapidly at 25 days of fermentation, which was possibly caused by bacteriophage infection of the Lactobacillus species. Many genes related to carbohydrate transport and hydrolysis and lactate fermentation were actively expressed, which indicated typical heterolactic acid fermentation. Mannitol dehydrogenase-encoding genes (mdh) were identified from all Leuconostoc species and especially Lc. mesenteroides, which harbored three copies (two copies on chromosome and one copy on plasmid) of mdh with different expression patterns. These results contribute to knowledge of the active populations and gene expression in the LAB community responsible for an important fermentation process.
Descriptors
Links
Book Title
Database
Publisher
Elsevier B.V
Data Source
Authors
Jung,J.Y., Lee,S.H., Jin,H.M., Hahn,Y., Madsen,E.L., Jeon,C.O.
Original/Translated Title
URL
Date of Electronic
20130306
PMCID
Editors
|
|||
| Prevalence and molecular characterization of CTX-M beta-lactamase-producing Escherichia coli isolated from healthy swine and cattle | 2013 | Bacterial Disease Division, Animal, Plant, and Fisheries Quarantine and Inspection Agency, Anyang, Gyeonggi-do, Korea. | Read more... |
|
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Foodborne pathogens and disease
Periodical, Abbrev.
Foodborne Pathog.Dis.
Pub Date Free Form
Jan
Volume
10
Issue
1
Start Page
13
Other Pages
20
Notes
JID: 101120121; 0 (Bacterial Proteins); 0 (DNA, Bacterial); EC 3.5.2.6 (beta-Lactamases); 2012/12/04 [aheadofprint]; ppublish
Place of Publication
United States
ISSN/ISBN
1556-7125; 1535-3141
Accession Number
PMID: 23210923
Language
eng
SubFile
Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
10.1089/fpd.2012.1245 [doi]
Output Language
Unknown(0)
PMID
23210923
Abstract
The purpose of this study was to determine the prevalence and characteristics of CTX-M beta-lactamases in Escherichia coli among healthy swine and cattle in Korea. A total of 1212 fecal samples obtained from healthy pigs (n=558) and cattle (n=654) were screened for CTX-M-type extended spectrum beta-lactamase (ESBL)-producing E. coli isolates. One hundred and twenty-one E. coli that produced ESBL were subjected to phenotypic and genotypic characterization. A high number (120/558, 21.5%) of swine fecal samples showed the presence of CTX-M beta-lactamase-producing E. coli compared to cattle samples (1/654, 0.2%). The most predominant CTX-M-type identified was CTX-M-14 (n=82), followed by CTX-M-15 (n=16). Isolates producing CTX-M-3, CTX-M-27, CTX-M-55, and CTX-M-65 were also identified. Overall, the bla(TEM-1) gene was associated with CTX-M beta-lactamase in 55 E. coli isolates. Transfer of bla(CTX-M) gene was demonstrated from 76 out of 121 bla(CTX-M)-positive E. coli isolates to the recipient E. coli J53 by conjugation. Plasmid DNA isolation from the transconjugants revealed a large (90-120 Kb) conjugative plasmid. ISEcp1 and IS903 were detected upstream and downstream of bla(CTX-M) genes in 117 and 91 E. coli isolates, respectively. Our results demonstrated that a combination of clonal expansion and horizontal transmission is spreading bla(CTX-M) genes among swine E. coli. The horizontal dissemination of bla(CTX-M) genes among E. coli was mostly mediated by IncF or IncI1-Igamma plasmids. To the best of our knowledge, this study represents the first report of CTX-M-3, CTX-M-27, CTX-M-55, and CTX-M-65 beta-lactamases in bacterial isolates from food animals in Korea. This study revealed that the CTX-M beta-lactamase-producing E. coli are widely disseminated among healthy pigs but very rare in cattle in Korea. Increasing prevalence of bla(CTX-M) genes in intestinal E. coli of food animals is a matter of concern and should be carefully monitored.
Descriptors
Links
Book Title
Database
Publisher
Data Source
Authors
Tamang,M.D., Nam,H.M., Kim,S.R., Chae,M.H., Jang,G.C., Jung,S.C., Lim,S.K.
Original/Translated Title
URL
Date of Electronic
20121204
PMCID
Editors
|
|||
| Cork as a new (green) coating for solid-phase microextraction: determination of polycyclic aromatic hydrocarbons in water samples by gas chromatography-mass spectrometry | 2013 | Departamento de Quimica, Universidade Federal de Santa Catarina, Florianopolis, SC, Brazil. | Read more... |
|
Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Analytica Chimica Acta
Periodical, Abbrev.
Anal.Chim.Acta
Pub Date Free Form
15-Apr
Volume
772
Issue
Start Page
33
Other Pages
39
Notes
LR: 20131121; CI: Copyright (c) 2013; JID: 0370534; 0 (Polycyclic Hydrocarbons, Aromatic); 0 (Water Pollutants, Chemical); 059QF0KO0R (Water); 2012/11/16 [received]; 2013/02/01 [revised]; 2013/02/13 [accepted]; 2013/02/20 [aheadofprint]; ppublish
Place of Publication
Netherlands
ISSN/ISBN
1873-4324; 0003-2670
Accession Number
PMID: 23540245
Language
eng
SubFile
Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
10.1016/j.aca.2013.02.021 [doi]
Output Language
Unknown(0)
PMID
23540245
Abstract
A new fiber for solid-phase microextraction (SPME) was prepared employing cork as a coating. The morphology and composition of the cork fiber was evaluated by scanning electron microscopy (SEM) and Fourier transform infrared spectroscopy (FTIR), respectively. The proposed fiber was used for the determination of polycyclic aromatic hydrocarbons (PAHs) in river water samples by gas chromatography-selected ion monitoring-mass spectrometry (GC-SIM-MS). A central composite design was used for optimization of the variables involved in the extraction of PAHs from water samples. The optimal extraction conditions were extraction time and temperature of 60 min and 80 degrees C, respectively. The detection and quantification limits were 0.03 and 0.1 mug L(-1), respectively. The recovery values were between 70.2 and 103.2% and the RSD was /=0.96 and the fiber-to-fiber reproducibility showed RSD=18.6% (n=5). The efficiency of the cork fiber was compared with commercially available fibers and good results were achieved, demonstrating the applicability and great potential of cork as a coating for SPME.
Descriptors
Links
Book Title
Database
Publisher
Elsevier B.V
Data Source
Authors
Dias,A.N., Simao,V., Merib,J., Carasek,E.
Original/Translated Title
URL
Date of Electronic
20130220
PMCID
Editors
|
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| Diversity of lactic acid bacteria during fermentation of a traditional Chinese fish product, Chouguiyu (stinky mandarinfish) | 2013 | College of Food Science and Biotechnology and, Inst. of Aquatic Products Processing, Zhejiang Gongshang Univ., Hangzhou, Zhejiang, 310035, China. | Read more... |
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Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Journal of Food Science
Periodical, Abbrev.
J.Food Sci.
Pub Date Free Form
Nov
Volume
78
Issue
11
Start Page
M1778
Other Pages
83
Notes
CI: (c) 2013; JID: 0014052; 0 (DNA, Bacterial); 0 (RNA, Ribosomal, 16S); OTO: NOTNLM; 2013/05/27 [received]; 2013/09/14 [accepted]; ppublish
Place of Publication
United States
ISSN/ISBN
1750-3841; 0022-1147
Accession Number
PMID: 24245896
Language
eng
SubFile
Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
10.1111/1750-3841.12289 [doi]
Output Language
Unknown(0)
PMID
24245896
Abstract
Chouguiyu, or stinky mandarinfish, is a traditional Chinese fermented fish product made of mandarinfish by spontaneous fermentation at the anaerobic condition with low-salt concentration. In order to get a primary understanding of the microbial community presenting in the Chouguiyu fermentation, 61 cultures of lactic acid bacteria (LAB) from various fermentation period were isolated using MRS agar plates and characterized based on a combination of phenotypic and genotypic approaches including amplified ribosomal DNA restriction analysis (ARDRA) and 16S rRNA partial gene sequencing analysis. Eight distinct bacterial species belonging to 6 genera were identified in total. Among them, Lactobacillus sakei was the dominant species (63%) during the fermentation, which exhibited great variety in phenotypic tests but unique genotypic characters. Meanwhile, the other LAB species including Lactococcus (Lc.) garvieae, Lc. lactis, Lc. raffinolactis, Vagococcus sp., Enterococcus hermanniensis, Macrococcus caseolyticus as well as Streptococcus parauberis were also recovered from the different fermentation periods, especially at the initial point of the fermentation. This seems to be the 1st report investigating the LAB composition involved in Chouguiyu fermentation and the data obtained in this study may be valuable for selecting starter culture for Chouguiyu industrial-scale production.
Descriptors
Links
Book Title
Database
Publisher
Institute of Food Technologists(R)
Data Source
Authors
Dai,Z., Li,Y., Wu,J., Zhao,Q.
Original/Translated Title
URL
Date of Electronic
PMCID
Editors
|
|||
| A comprehensive examination of hookah smoking in college students: use patterns and contexts, social norms and attitudes, harm perception, psychological correlates and co-occurring substance use | 2013 | Center for Health Care Evaluation, Palo Alto Veterans Affairs Health Care System, Palo Alto, CA, USA. aheinz@stanford.edu | Read more... |
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Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Addictive Behaviors
Periodical, Abbrev.
Addict.Behav.
Pub Date Free Form
Nov
Volume
38
Issue
11
Start Page
2751
Other Pages
2760
Notes
LR: 20151119; CI: (c) 2013; JID: 7603486; OTO: NOTNLM; 2013/03/29 [received]; 2013/06/21 [revised]; 2013/07/15 [accepted]; 2013/07/23 [aheadofprint]; ppublish
Place of Publication
England
ISSN/ISBN
1873-6327; 0306-4603
Accession Number
PMID: 23934006
Language
eng
SubFile
Journal Article; Research Support, U.S. Gov't, Non-P.H.S.; IM
DOI
10.1016/j.addbeh.2013.07.009 [doi]
Output Language
Unknown(0)
PMID
23934006
Abstract
The practice of waterpipe smoking (hookah) has rapidly increased in popularity among young adults yet burgeoning research suggests that its use is associated with nicotine dependence and other negative smoking-related health consequences. Moreover, descriptive studies indicate that consumers may hold the belief that hookah smoking is safer than smoking cigarettes. The current study extended previous work by conducting a comprehensive assessment of patterns and contexts of hookah use, psychological correlates of use, co-occurring substance use as well as social norms and health perceptions surrounding the practice. Participants were 143 ethnically diverse undergraduate students at a large urban US university. Approximately half of the sample (48%) reported life-time use of hookah and 22% reported use within the past 30days. Relative to cigarette smoking, hookah smoking was associated with less perceived harm and addiction potential and higher social approval. Participants who reported life-time hookah use, as compared to those who did not, perceived less associated harm, had a greater number of friends who had tried and approved of hookah, were more likely to use cigarettes, marijuana, and alcohol and in higher frequencies and quantities and were at higher risk for problem tobacco and alcohol use. Among participants who were not current smokers, those with hookah experience were more likely to endorse intent to try a cigarette soon. Hookah users did not differ from non-users on measures of trait anxiety, depression and impulsivity though they were more likely to drink alcohol for coping, social and enhancement purposes than non-users. Implications are discussed for public health initiatives to educate young adults about the potential consequences of hookah smoking.
Descriptors
Links
Book Title
Database
Publisher
Elsevier Ltd
Data Source
Authors
Heinz,A.J., Giedgowd,G.E., Crane,N.A., Veilleux,J.C., Conrad,M., Braun,A.R., Olejarska,N.A., Kassel,J.D.
Original/Translated Title
URL
Date of Electronic
20130723
PMCID
Editors
|
|||
| Comparative evaluation of liquid-liquid extraction, solid-phase extraction and solid-phase microextraction for the gas chromatography-mass spectrometry determination of multiclass priority organic contaminants in wastewater | 2013 | Analytical Chemistry Research Group (FQM-323), Department of Physical and Analytical Chemistry, Campus Las Lagunillas, Edif. B3, University of Jaen, 23071 Jaen, Spain. | Read more... |
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Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
Talanta
Periodical, Abbrev.
Talanta
Pub Date Free Form
15-Dec
Volume
117
Issue
Start Page
382
Other Pages
391
Notes
CI: (c) 2013; JID: 2984816R; 0 (Pesticides); 0 (Polycyclic Hydrocarbons, Aromatic); 0 (Solvents); 0 (Waste Water); 0 (Water Pollutants, Chemical); OTO: NOTNLM; 2013/07/16 [received]; 2013/09/16 [revised]; 2013/09/20 [accepted]; 2013/09/25 [aheadofprint];
Place of Publication
Netherlands
ISSN/ISBN
1873-3573; 0039-9140
Accession Number
PMID: 24209357
Language
eng
SubFile
Comparative Study; Journal Article; Research Support, Non-U.S. Gov't; IM
DOI
10.1016/j.talanta.2013.09.040 [doi]
Output Language
Unknown(0)
PMID
24209357
Abstract
The European Water Framework Directive (WFD) 2000/60/EC establishes guidelines to control the pollution of surface water by sorting out a list of priority substances that involves a significant risk to or via the aquatic systems. In this article, the analytical performance of three different sample preparation methodologies for the GC-MS/MS determination of multiclass organic contaminants-including priority comprounds from the WFD-in wastewater samples using gas chromatography-mass spectrometry was evaluated. The methodologies tested were: (a) liquid-liquid extraction (LLE) with n-hexane; (b) solid-phase extraction (SPE) with C18 cartridges and elution with ethyl acetate:dichloromethane (1:1 (v/v)), and (c) headspace solid-phase microextraction (HS-SPME) using two different fibers: polyacrylate and polydimethylsiloxane/carboxen/divinilbenzene. Identification and confirmation of the selected 57 compounds included in the study (comprising polycyclic aromatic hydrocarbons (PAHs), pesticides and other contaminants) were accomplished using gas chromatography tandem mass spectrometry (GC-MS/MS) with a triple quadrupole instrument operated in the multiple reaction monitoring (MRM) mode. Three MS/MS transitions were selected for unambiguous confirmation of the target chemicals. The different advantages and pitfalls of each method were discussed. In the case of both LLE and SPE procedures, the method was validated at two different concentration levels (15 and 150 ng L(-1)) obtaining recovery rates in the range 70-120% for most of the target compounds. In terms of analyte coverage, results with HS-SPME were not satisfactory, since 14 of the compounds tested were not properly recovered and the overall performance was worse than the other two methods tested. LLE, SPE and HS-SPME (using polyacrylate fiber) procedures also showed good linearity and precision. Using any of the three methodologies tested, limits of quantitation obtained for most of the detected compounds were in the low nanogram per liter range.
Descriptors
Links
Book Title
Database
Publisher
Elsevier B.V
Data Source
Authors
Robles-Molina,J., Gilbert-Lopez,B., Garcia-Reyes,J.F., Molina-Diaz,A.
Original/Translated Title
URL
Date of Electronic
20130925
PMCID
Editors
|
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| Reconsidering the double etching of enamel: do self-etching primers contaminate phosphoric acid-etched enamel? | 2013 | Department of Operative Dentistry and Peridontology, University of Ulm, Ulm, Germany. andread.rathke@uniklinik-ulm.de | Read more... |
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Source Type
Print(0)
Ref Type
Journal Article
Periodical, Full
The journal of adhesive dentistry
Periodical, Abbrev.
J.Adhes.Dent.
Pub Date Free Form
Apr
Volume
15
Issue
2
Start Page
107
Other Pages
114
Notes
JID: 100888552; 0 (Acrylic Resins); 0 (AdheSE cement); 0 (Clearfil SE Bond); 0 (Composite Resins); 0 (Methacrylates); 0 (OptiBond Solo Plus Self-Etch); 0 (Phosphoric Acids); 0 (Resin Cements); E4GA8884NN (phosphoric acid); ppublish
Place of Publication
England
ISSN/ISBN
1461-5185; 1461-5185
Accession Number
PMID: 23534014
Language
eng
SubFile
Evaluation Studies; Journal Article; D
DOI
10.3290/j.jad.a28671 [doi]
Output Language
Unknown(0)
PMID
23534014
Abstract
PURPOSE: To evaluate the composite-to-enamel bond following double etching of the enamel using phosphoric acid and different self-etching (SE) bonding systems with and without the application of their respective acidic primers. MATERIALS AND METHODS: The enamel surfaces of 90 human molars were ground (600 grit) flat and randomly divided into nine groups (n = 10). Three two-step SE systems (AdheSE, ASE; Clearfil SE Bond, CSE; OptiBond Solo Plus SE, OSE) were tested, both with and without primer application on enamel pre-etched with phosphoric acid under dry bonding conditions. As the controls, the SE systems were applied according to their original directions without pre-etching. All the specimens were built up with a microhybrid composite resin (Arabesk Top). After water storage for 24 h at 37 degrees C, the bonded specimens were sheared to failure in the Zwicki 1120. Etching and failure patterns were evaluated using a scanning electron microscope (SEM). Shear bond strength was analyzed with two-way ANOVA and Tukey's test. Failure modes were analyzed with Fisher's exact test. RESULTS: Without pre-etching, CSE showed significantly higher bond strengths than ASE and OSE (p 0.05), 36% for CSE (p
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Authors
Rathke,A., Ostermeier,V., Muche,R., Haller,B.
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