18 research outputs found

    Search for dark matter produced in association with bottom or top quarks in √s = 13 TeV pp collisions with the ATLAS detector

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    A search for weakly interacting massive particle dark matter produced in association with bottom or top quarks is presented. Final states containing third-generation quarks and miss- ing transverse momentum are considered. The analysis uses 36.1 fb−1 of proton–proton collision data recorded by the ATLAS experiment at √s = 13 TeV in 2015 and 2016. No significant excess of events above the estimated backgrounds is observed. The results are in- terpreted in the framework of simplified models of spin-0 dark-matter mediators. For colour- neutral spin-0 mediators produced in association with top quarks and decaying into a pair of dark-matter particles, mediator masses below 50 GeV are excluded assuming a dark-matter candidate mass of 1 GeV and unitary couplings. For scalar and pseudoscalar mediators produced in association with bottom quarks, the search sets limits on the production cross- section of 300 times the predicted rate for mediators with masses between 10 and 50 GeV and assuming a dark-matter mass of 1 GeV and unitary coupling. Constraints on colour- charged scalar simplified models are also presented. Assuming a dark-matter particle mass of 35 GeV, mediator particles with mass below 1.1 TeV are excluded for couplings yielding a dark-matter relic density consistent with measurements

    Measurement of jet fragmentation in Pb+Pb and pppp collisions at sNN=2.76\sqrt{{s_\mathrm{NN}}} = 2.76 TeV with the ATLAS detector at the LHC

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    Challenges for building consensus for adoption and full compliance with 100% smoke free law in Serbia

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    In Serbia, 37% of adults smoke and more than half of the population is exposed to tobacco smoke in enclosed places. The hospitality sector is exempted from the smoking ban and compliance with current legislation is low. From March 2017, Institute of Public Health of Serbia implemented a project aimed at building consensus for adoption and full compliance with 100% smoke free law in Serbia. The project was funded by Bloomberg Philanthropies and managed by the International Union Against Tuberculosis and Lung Disease. Project supported conferences and other events, contributed to the continuous presence in the media and built up informational resources to advocate for the smoke free environment which will be useful in the next period. New partnerships were established leading to an increase in a number of partners who will further work in tobacco control field. Based on the findings from surveys, conclusions from the multisectorial events and media content analysis, next steps and challenges were identified. In the next period, together with advocacy measures aimed at decision makers, it is important to focus on the general public and health professionals so they accept and advocate for evidence based tobacco control measures. Social norms changes are needed due to strong correlation between social norms and policy implementation. Moreover, it is necessary to conduct campaigns to change the perception of economic benefits of tobacco. New challenges such as heated tobacco products amplify the importance of the provision of accurate information on tobacco control best practice to decision makers, general public and health professionals. Findings from 2018 survey conducted as part of the project showed that only 26% of smokers and 64% of nonsmokers think smoking in the hospitality sector violates right to smoke free air, indicating the need of incorporating human rights approaches into further actions

    Hemp as a raw material for fiber and paper production

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    Waterpipe use and attitudes related to it among Serbian adult population

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    Introduction To analyze prevalence of water pipe use and attitudes related to it among Serbian adults. Methods Data were obtained through cross sectional survey conducted in December 2017. Three stage random nationally representative stratified sample was used. Data from 1045 Serbian adults were collected through computer assisted personal interviewing. Results Lifetime prevalence of waterpipe use is 6% (7% male, 5% female). In addition, 7% of population visited bars specialized for waterpipe use (waterpipe bars) but haven’t smoke waterpipe. The highest percentage of waterpipe lifetime users was in the 18-24 age group (15%), followed by age group 25-34 (12%). In the same age groups, additional 22% and 12% respectively have visited waterpipe bar, but haven’t smoke waterpipe. Almost every third citizen of Serbia (29%) thinks that waterpipe use is less harmful than cigarette use, 39% agree with the statement that waterpipe users can develop nicotine addiction and 36% think that waterpipe use is risk factor for malignant diseases. Young adults 18-24 years old are less aware of harmful consequences of waterpipe use. There are more citizens that agree that waterpipe use in hospitality sector should be banned than those who disagree with such measure (40% vs.24%). Younger population is less favorable to the waterpipe smoking ban in hospitality sector. Conclusions Waterpipe use and spending time in specialized waterpipe bars is popular in Serbia, especially among young adults. Insufficient number of citizens is aware of risks associated with waterpipe use. Findings indicate need of awareness raising on health effects associated with waterpipe smoking and exposure to waterpipe smoke

    Impact of smoke free law on smoking status of Serbian adults

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    Aim and objective Smoke free law came into effect in Serbia on December 2010. Law bans smoking in enclosed public places with exemption to hospitality sector. The aim of the study is to present changes in smoking status after the adoption of the smoking ban. Methods We used data of nine surveys which are conducted since the adoption of the law. First survey was conducted at the time of adoption, followed by surveys three and nine months after adoption of the law and afterwards on annual basis. These surveys were conducted on representative samples of the ca 1000 of Serbian adults. Results Three months after adoption of the law 22.9% smokers stated that smoke free law had influence on their smoking status in the way they stoped smoking or reduced number of smoked cigarettes. Percentage of smokers that reduced or stopped smoking reached 29.2% in the fourth year after adoption of the law (2014), followed by the decrease. In 2017, less smokers stopped or reduced number of cigarettes (21.6%) compared to the first year. The changes in smoking status by years were statistically significant (p=0.000). One of the factors contributing to the reversed trend might be lower compliance with the Law. Same surveys showed that also that in the fourth year after adoption of the law, percentage of people estimating compliance with the current smoke free law as not good, started to increase and reached 22,8% in 2017. Conclusions The smoke free law contributed to changes in smoking status and patterns of smoking in Serbia. However, the influence of the smoke free law started to weaken in the forth year after the implementation. Contributing factor might be lower compliance with the law

    Gas chromatographic retention indices for the <i>N</i>-methyl-<i>N</i>-substituted benzamides <span style="font-size:12.0pt;line-height:115%;font-family:"Times New Roman"; mso-fareast-font-family:"Times New Roman";color:#222222;mso-ansi-language:EN-IN; mso-fareast-language:EN-IN;mso-bidi-language:HI" lang="EN-IN">on capillary columns</span></span></span></span></span>

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    694-699<span style="font-size:12.0pt;line-height: 115%;font-family:" times="" new="" roman";mso-fareast-font-family:"times="" roman";="" color:#3a3a3a;mso-ansi-language:en-in;mso-fareast-language:en-in;mso-bidi-language:="" hi"="" lang="EN-IN">Ga<span style="font-size:12.0pt;line-height:115%; font-family:" times="" new="" roman";mso-fareast-font-family:"times="" roman";="" color:#545454;mso-ansi-language:en-in;mso-fareast-language:en-in;mso-bidi-language:="" hi"="" lang="EN-IN">s <span style="font-size:12.0pt;line-height:115%; font-family:" times="" new="" roman";mso-fareast-font-family:"times="" roman";="" color:#3a3a3a;mso-ansi-language:en-in;mso-fareast-language:en-in;mso-bidi-language:="" hi"="" lang="EN-IN">chrom<span style="font-size:12.0pt;line-height:115%; font-family:" times="" new="" roman";mso-fareast-font-family:"times="" roman";="" color:#545454;mso-ansi-language:en-in;mso-fareast-language:en-in;mso-bidi-language:="" hi"="" lang="EN-IN">a<span style="font-size:12.0pt;line-height:115%; 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font-family:" times="" new="" roman";mso-fareast-font-family:"times="" roman";="" color:#545454;mso-ansi-language:en-in;mso-fareast-language:en-in;mso-bidi-language:="" hi"="" lang="EN-IN">z<span style="font-size:12.0pt;line-height:115%; font-family:" times="" new="" roman";mso-fareast-font-family:"times="" roman";="" color:#3a3a3a;mso-ansi-language:en-in;mso-fareast-language:en-in;mso-bidi-language:="" hi"="" lang="EN-IN">ed N-methyl-N-substituted benzamides on DB-1,DB-5 and DB-WAX capillary columns isothermal at 170, 190 and 210oC , and using temperature programmed gas chromatography (TPGC) have been determined within standard deviation of 0.6 i.u. 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