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https://www.readbyqxmd.com/read/28337465/inflammatory-response-and-barrier-dysfunction-by-different-e-cigarette-flavoring-chemicals-identified-by-gas-chromatography-mass-spectrometry-in-e-liquids-and-e-vapors-on-human-lung-epithelial-cells-and-fibroblasts
#1
Janice Gerloff, Isaac K Sundar, Robert Freter, Emily R Sekera, Alan E Friedman, Risa Robinson, Todd Pagano, Irfan Rahman
Recent studies suggest that electronic cigarette (e-cig) flavors can be harmful to lung tissue by imposing oxidative stress and inflammatory responses. The potential inflammatory response by lung epithelial cells and fibroblasts exposed to e-cig flavoring chemicals in addition to other risk-anticipated flavor enhancers inhaled by e-cig users is not known. The goal of this study was to evaluate the release of the proinflammatory cytokine (interleukin-8 [IL-8]) and epithelial barrier function in response to different e-cig flavoring chemicals identified in various e-cig e-liquid flavorings and vapors by chemical characterization using gas chromatography-mass spectrometry analysis...
March 1, 2017: Appl In Vitro Toxicol
https://www.readbyqxmd.com/read/28330186/a-comprehensive-study-of-one-step-selenization-process-for-cu-in1-x-ga-x-se2-thin-film-solar-cells
#2
Shih-Chen Chen, Sheng-Wen Wang, Shou-Yi Kuo, Jenh-Yih Juang, Po-Tsung Lee, Chih Wei Luo, Kaung-Hsiung Wu, Hao-Chung Kuo
In this work, aiming at developing a rapid and environmental-friendly process for fabricating CuIn1-x Ga x Se2 (CIGS) solar cells, we demonstrated the one-step selenization process by using selenium vapor as the atmospheric gas instead of the commonly used H2Se gas. The photoluminescence (PL) characteristics indicate that there exists an optimal location with superior crystalline quality in the CIGS thin films obtained by one-step selenization. The energy dispersive spectroscopy (EDS) reveals that the Ga lateral distribution in the one-step selenized CIGS thin film is intimately correlated to the blue-shifted PL spectra...
December 2017: Nanoscale Research Letters
https://www.readbyqxmd.com/read/28327447/effect-of-motivational-interviewing-on-depression-scale-scores-of-adolescents-with-obesity-and-overweight
#3
Silvia Freira, Marina Serra Lemos, Geoffrey Williams, Marta Ribeiro, Fernanda Pena, Maria do Céu Machado
The aim of this study was to compare the effect of motivational interview (MI) with conventional care on the depression scale scores of adolescents with obesity/overweight. It was a controlled cluster randomized trial with parallel design, including two groups: intervention group [Motivational Interview Group (MIG)], control group [Conventional Intervention Group (CIG)]. INTERVENTION: three face-to-face 30min' interviews three months apart (only MIG interviews were based on MI principles)...
March 12, 2017: Psychiatry Research
https://www.readbyqxmd.com/read/28296556/beliefs-about-the-direct-comparison-of-e-cigarettes-and-cigarettes
#4
Alexandra R Hershberger, Kenny A Karyadi, J Davis VanderVeen, Melissa A Cyders
BACKGROUND: Recent data suggests that positive beliefs about electronic cigarettes (e-cigs) use can lead to later e-cig use. Considering that many advertisements claim that e-cigs are superior to cigarettes, individuals' likelihood to view e-cigs more favorably than cigarettes can also influence subsequent e-cig use; however, no studies have directly assessed such a comparison. OBJECTIVES: The present study created and validated the Comparing E-Cigarettes and Cigarettes questionnaire (CEAC), which asks individuals to directly compare e-cigs and cigarettes on a number of dimensions, in two independent samples...
March 15, 2017: Substance Use & Misuse
https://www.readbyqxmd.com/read/28289597/daily-users-compared-to-less-frequent-users-find-vape-as-or-more-satisfying-and-less-dangerous-than-cigarettes-and-are-likelier-to-use-non-cig-alike-vaping-products
#5
Lynn T Kozlowski, D Lynn Homish, Gregory G Homish
We assessed the roles of perceived satisfaction and perceived danger and vaping-product-type as correlates of more frequent use of vaping products. In a baseline assessment of a longitudinal study of US Army Reserve/National Guard Soldiers and their partners (New York State, USA, 2014-2016), participants were asked about current use of vaping products (e-cigarettes) and perceived satisfaction and danger in comparison to cigarettes as well as type of product used. Fisher-exact tests and multiple ordinal logistic regressions were used...
June 2017: Preventive Medicine Reports
https://www.readbyqxmd.com/read/28281352/crystalline-engineering-toward-large-scale-high-efficiency-printable-cu-in-ga-se2-thin-film-solar-cells-on-flexible-substrate-by-femtosecond-laser-annealing-process
#6
Shih-Chen Chen, Nian-Zu She, Kaung-Hsiung Wu, Yu-Ze Chen, Wei-Sheng Lin, Jia-Xing Li, Fang I Lai, Jenh-Yih Juang, Chih Wei Luo, Lung-Teng Cheng, Tung-Po Hsieh, Hao-Chung Kuo, Yu-Lun Chueh
Ink-printing method emerges as a viable way for manufacturing large-scale flexible Cu(In,Ga)Se2 (CIGS) thin film photovoltaic (TFPV) devices owing to its potential for the rapid process, mass production and low-cost non-vacuum device fabrication. Here, we brought the femtosecond laser annealing (fs-LA) process into the ink-printing CIGS thin film preparation. The effects of fs-LA treatment on the structural and optoelectronic properties of the ink-printing CIGS thin films were systematically investigated. It was observed that, while the film surface morphology remained essentially unchanged under superheating, the quality of crystallinity was significantly enhanced after the fs-LA treatment...
March 10, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28275663/dataset-demonstrating-the-modeling-of-a-high-performance-cu-in-ga-se2-absorber-based-thin-film-photovoltaic-cell
#7
Md Asaduzzaman, Ali Newaz Bahar, Mohammad Maksudur Rahman Bhuiyan
The physical data of the semiconductor materials used in the design of a CIGS absorber based thin film photovoltaic cell have been presented in this data article. Besides, the values of the contact parameter and operating conditions of the cell have been reported. Furthermore, by conducting the simulation with data corresponding to the device structure: soda-lime glass (SLG) substrate/Mo back-contact/CIGS absorber/CdS buffer/intrinsic ZnO/Al-doped ZnO window/Al-grid front-contact, the solar cell performance parameters such as open circuit voltage [Formula: see text], short circuit current density [Formula: see text], fill factor [Formula: see text], efficiency [Formula: see text], and collection efficiency [Formula: see text] have been analyzed...
April 2017: Data in Brief
https://www.readbyqxmd.com/read/28272224/high-expression-of-sall4-and-fascin-and-loss-of-e-cadherin-expression-in-undifferentiated-dedifferentiated-carcinomas-of-the-endometrium-an-immunohistochemical-and-clinicopathologic-study
#8
Semen Onder, Orhun Cig Taskin, Fatma Sen, Samet Topuz, Seden Kucucuk, Hamdullah Sozen, Ridvan Ilhan, Sitki Tuzlali, Ekrem Yavuz
Undifferentiated/dedifferentiated endometrial carcinomas (UCE/DCEs) of the endometrium are rare tumors with poor prognosis. There are few clinicopathologic studies with detailed immunohistochemical analysis regarding UCE/DCEs.We evaluated the diagnostic value of a selected tumor stem-cell marker and epithelial-mesenchymal transition (EMT) markers, in addition to previously studied markers in identifying UCE/DCEs from other types of high-grade endometrial carcinomas.Eleven cases of UCE/DCEs with complete clinical follow-up that were diagnosed between 2006 and 2015 were included in the study...
March 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28265711/simultaneous-analysis-of-nine-aromatic-amines-in-mainstream-cigarette-smoke-using-online-solid-phase-extraction-combined-with-liquid-chromatography-tandem-mass-spectrometry
#9
Jie Zhang, Ruoshi Bai, Zhaojuan Zhou, Xingyu Liu, Jun Zhou
A fully automated analytical method was developed and validated by this present study. The method was based on two-dimensional (2D) online solid-phase extraction liquid chromatography-tandem mass spectrometry (SPE-LC-MS/MS) to determine nine aromatic amines (AAs) in mainstream smoke (MSS) simultaneously. As a part of validation process, AAs yields for 16 top-selling commercial cigarettes from China market were evaluated by the developed method under both Health Canada Intensive (HCI) and ISO machine smoking regimes...
April 2017: Analytical and Bioanalytical Chemistry
https://www.readbyqxmd.com/read/28246235/e-cigs-have-lower-levels-of-harmful-toxins
#10
Roger Collier
No abstract text is available yet for this article.
February 27, 2017: CMAJ: Canadian Medical Association Journal, Journal de L'Association Medicale Canadienne
https://www.readbyqxmd.com/read/28212302/the-importance-of-conditioned-stimuli-in-cigarette-and-e-cigarette-craving-reduction-by-e-cigarettes
#11
Martijn Van Heel, Dinska Van Gucht, Koen Vanbrabant, Frank Baeyens
This study examined the impact of four variables pertaining to the use of e-cigarettes (e-cigs) on cravings for tobacco cigarettes and for e-cigs after an overnight abstinence period. The four variables were the nicotine level, the sensorimotor component, the visual aspect, and the aroma of the e-cig. In an experimental study, 81 participants without prior vaping experience first got acquainted with using e-cigs in a one-week tryout period, after which they participated in a lab session assessing the effect of five minutes of vaping following an abstinence period of 12 h...
February 15, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28202929/prohibition-of-e-cigarettes-in-the-us-are-prohibitions-where-alcohol-is-consumed-related-to-lower-alcohol-consumption
#12
Alexandra R Hershberger, Kenny A Karyadi, Melissa A Cyders
Recently, research has suggested negative consequences related to electronic cigarette (e-cig) use, including the increased risk for alcohol use and abuse. Previous work found that cigarette smoking ban legislation lowered overall smoking and alcohol use rates; however, researchers have not yet examined the potential effects of prohibiting e-cig use. The present study surveyed 617 individuals from a community-based online sample in the US (mean age = 33.33, SD = 10.50, 54.7 per cent female) who reported their smoking/e-cig use status, alcohol consumption, and the presence of e-cig prohibitions where they consume alcohol...
December 2016: Journal of Public Health Policy
https://www.readbyqxmd.com/read/28185897/effect-of-tobacco-and-electronic-cigarette-use-on-cough-reflex-sensitivity
#13
REVIEW
Peter V Dicpinigaitis
Multiple previous studies have shown that otherwise healthy tobacco cigarette smokers have suppressed cough reflex sensitivity compared with nonsmokers and furthermore, that smoking cessation, even after years of tobacco use, leads to prompt enhancement of cough reflex sensitivity. Thus, cough reflex sensitivity is demonstrated to be a dynamic phenomenon, responding to the presence or absence of influences such as tobacco smoke. These studies, however, were unable to identify whether it was the influence of nicotine, or one or more of the numerous components of tobacco cigarette smoke, that were responsible for this effect...
February 6, 2017: Pulmonary Pharmacology & Therapeutics
https://www.readbyqxmd.com/read/28168771/recent-updates-on-electronic-cigarette-aerosol-and-inhaled-nicotine-effects-on-periodontal-and-pulmonary-tissues
#14
REVIEW
Fawad Javed, Sergio V Kellesarian, Isaac K Sundar, Georgios E Romanos, Irfan Rahman
E-cigarette derived inhaled nicotine may contribute to the pathogenesis of periodontal and pulmonary diseases in particular via lung inflammation, injurious and dysregulated repair responses. Nicotine is shown to have anti-proliferative properties and affects fibroblasts in vitro, which may interfere in tissue myofibroblast differentiation in e-cig users. This will affect the ability to heal wounds by decreasing wound contraction. In periodontics, direct exposure to e-vapor has been shown to produce harmful effects in periodontal ligament and gingival fibroblasts in culture...
February 6, 2017: Oral Diseases
https://www.readbyqxmd.com/read/28128351/effect-of-the-kf-post-deposition-treatment-on-grain-boundary-properties-in-cu-in-ga-se2-thin-films
#15
N Nicoara, Th Lepetit, L Arzel, S Harel, N Barreau, S Sadewasser
Significant power conversion efficiency improvements have recently been achieved for thin-film solar cells based on a variety of polycrystalline absorbers, including perovskites, CdTe, and Cu(In,Ga)Se2 (CIGS). The passivation of grain boundaries (GBs) through (post-deposition) treatments is a crucial step for this success. For the case of CIGS, the introduction of a potassium fluoride post-deposition treatment (KF-PDT) has boosted their power conversion efficiency to the best performance of all polycrystalline solar cells...
January 27, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28124554/tailoring-photoelectrochemical-performance-and-stability-of-cu-in-ga-se2-photocathode-via-tio2-coupled-buffer-layers
#16
Bonhyeong Koo, Sung-Wook Nam, Richard Haight, Suncheul Kim, Seungtaeg Oh, Minhyung Cho, Jihun Oh, Jeong Yong Lee, Byung Tae Ahn, Byungha Shin
We report on the photoelectrochemical (PEC) performance and stability of Cu(In,Ga)Se2 (CIGS)-based photocathodes for photocatalytic hydrogen evolution from water. Various functional overlayers, such as CdS, TiO2, ZnxSnyOz, and a combination of the aforementioned, were applied on the CIGS to improve the performance and stability. We identified that the insertion of TiO2 overlayer on p-CIGS/n-buffer layers significantly improves the PEC performance. A multilayered photocathode consisting of CIGS/CdS/TiO2/Pt exhibited the best current-potential characteristics among the tested photocathodes, which demonstrates a power-saved efficiency of 2...
February 6, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28118024/e-cigarette-topics-shared-by-medical-professionals-a-comparison-of-tweets-from-the-united-states-and-united-kingdom
#17
Elizabeth M Glowacki, Allison J Lazard, Gary B Wilcox
Medical professionals are now relying on social media platforms like Twitter to express their recommendations for the use or avoidance of products like electronic cigarettes (e-cigs), which may have long-term health consequences for users. The goal of this study is to compare how physicians from the United States and the United Kingdom talk about e-cigs on Twitter and identify the topics that these groups perceive as salient. Comparing tweets from the U.S. and U.K. will allow for a better understanding of how medical professionals from these countries differ in their attitudes toward e-cigs...
February 2017: Cyberpsychology, Behavior and Social Networking
https://www.readbyqxmd.com/read/28108428/identifying-topics-for-e-cigarette-user-generated-contents-a-case-study-from-multiple-social-media-platforms
#18
Yongcheng Zhan, Ruoran Liu, Qiudan Li, Scott James Leischow, Daniel Dajun Zeng
BACKGROUND: Electronic cigarette (e-cigarette) is an emerging product with a rapid-growth market in recent years. Social media has become an important platform for information seeking and sharing. We aim to mine hidden topics from e-cigarette datasets collected from different social media platforms. OBJECTIVE: This paper aims to gain a systematic understanding of the characteristics of various types of social media, which will provide deep insights into how consumers and policy makers effectively use social media to track e-cigarette-related content and adjust their decisions and policies...
January 20, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/28096730/methodology-for-developing-evidence-based-clinical-imaging-guidelines-joint-recommendations-by-korean-society-of-radiology-and-national-evidence-based-healthcare-collaborating-agency
#19
REVIEW
Sol Ji Choi, Woo Kyoung Jeong, Ae Jeong Jo, Jin A Choi, Min-Jeong Kim, Min Lee, Seung Eun Jung, Kyung Hyun Do, Hwan Seok Yong, Seungsoo Sheen, Miyoung Choi, Jung Hwan Baek
This paper is a summary of the methodology including protocol used to develop evidence-based clinical imaging guidelines (CIGs) in Korea, led by the Korean Society of Radiology and the National Evidence-based Healthcare Collaborating Agency. This is the first protocol to reflect the process of developing diagnostic guidelines in Korea. The development protocol is largely divided into the following sections: set-up, process of adaptation, and finalization. The working group is composed of clinical imaging experts, and the developmental committee is composed of multidisciplinary experts to validate the methodology...
January 2017: Korean Journal of Radiology: Official Journal of the Korean Radiological Society
https://www.readbyqxmd.com/read/28070620/nicotine-delivery-to-users-from-cigarettes-and-from-different-types-of-e-cigarettes
#20
Peter Hajek, Dunja Przulj, Anna Phillips, Rebecca Anderson, Hayden McRobbie
BACKGROUND: Delivering nicotine in the way smokers seek is likely to be the key factor in e-cigarette (EC) success in replacing cigarettes. We examined to what degree different types of EC mimic nicotine intake from cigarettes. METHODS: Twelve participants ('dual users' of EC and cigarettes) used their own brand cigarette and nine different EC brands. Blood samples were taken at baseline and at 2-min intervals for 10 min and again at 30 min. RESULTS: Eleven smokers provided usable data...
March 2017: Psychopharmacology
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