PubMed İndeksli Yayınlar Koleksiyonu

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Citation - WoS: 20
Citation - Scopus: 26
An analysis of Emergency Medical Services demand: Time of day- day of the week- and location in the city
(ELSEVIER, 2017-06) Gorkem Sariyer; Mustafa Gokalp Ataman; Serhat Akay; Turhan Sofuoglu; Zeynep Sofuoglu; Ataman, Mustafa Gokalp; Sariyer, Gorkem; Sofuoglu, Turhan; Akay, Serhat; Sofuoglu, Zeynep
Objective: Effective planning of Emergency Medical Services (EMS) which is highly dependent on the analysis of past data trends is important in reducing response time. Thus we aimed to analyze demand for these services based on time and location trends to inform planning for an effective EMS. Materials and methods: Data for this retrospective study were obtained from the Izmir EMS 112 system. All calls reaching these services during first six months of 2013 were descriptively analyzed based on time and location trends as a heat-map form. Results: The analyses showed that demand for EMS varied within different time periods of day and according to day of the week. For the night period demand was higher at the weekend compared to weekdays whereas for daytime hours demand was higher during the week. For weekdays a statistically significant relation was observed between the call distribution of morning and evening periods. It was also observed that the percentage of demand changed according to location. Among 30 locations the five most frequent destinations for ambulances which are also correlated with high population densities accounted for 55.66% of the total. Conclusion: The results of this study shed valuable light on the areas of call center planning and optimal ambulance locations of Izmir which can also be served as an archetype for other cities. Copyright (C) 2016 The Emergency Medicine Association of Turkey. Production and hosting by Elsevier B.V. on behalf of the Owner. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
How are electricity generation effective on carbon neutrality in the global south? Evidence from sectoral CO2 emissions by daily data
(ELSEVIER, 2024-05) Tevfik Kartal; Ugur Korkut Pata; Dilvin Taskin
In light of the efforts to ensure carbon neutrality by combating climate-related problems the study investigates the effectiveness of electricity generation (EG) from the main renewable sources (hydro-HEG solar -SEG and wind-WEG). In this context the study examines the countries of the Global South (i.e. Brazil China and India) considers EG at a disaggregated level and sectoral CO 2 emissions applies nonlinear methods and uses daily data between January 2 2019 and December 31 2022. The results demonstrate that (i) disaggregated EG sources have a stronger (weaker) time and frequency dependency on sectoral CO 2 emissions in China (Brazil and India), (ii) HEG has a stimulating impact on sectoral CO 2 emissions in all countries, (iii) SEG has an increasing impact on sectoral CO 2 emissions in Brazil and China while it provides a decrease in sectoral CO 2 emissions in India, (iv) WEG upsurges sectoral CO 2 emissions in China while it achieves a CO 2 reduction in Brazil and India, (v) disaggregated level EG has a causal impact on sectoral CO 2 emissions across all quantiles except some lower middle and higher quantiles. The study adds scientific value to existing knowledge by analyzing for the first time which EG sources are effective in reducing daily CO 2 emissions in the Global South. Based on the outcomes the study demonstrates that WEG is the best EG source for Brazil that SEG and WEG are optimal EG sources for India and that China cannot benefit from the EG sources considered. In this way the study provides fresh insights for the countries of the Global South and underlines the crucial role of renewable EG in ensuring carbon neutrality.
Reduction of biogenic amines formation by foodborne pathogens using postbiotics in lysine-decarboxylase broth
(ELSEVIER, 2022-11) Nurten Yilmaz; Fatih Ozogul; Mehran Moradi; Eylem Ezgi Fadiloglu; Vida Simat; Joao Miguel Rocha
Postbiotics is a novel term proposed to describe as a set of bioactive compounds obtained from beneficial mi-croorganisms. In this work postbiotics from four lactic acid bacteria (LAB) including Leuconostoc mesenteroides subsp. cremoris Pediococcus acidilactici Lactococcus lactis subsp. lactis and Streptococcus thermophilus were pre-pared in MRS broth. The antimicrobial properties and organic acids content of postbiotics were also investigated. Postbiotics were used to tentatively reduce the production of biogenic amines by foodborne pathogens (i.e. Salmonella paratyphi A and Escherichia coli) on lysine decarboxylase broth (LDB). Experimental data showed that acetic propionic and butyric acids were in the range of 387.51-709.21 mg/L 0.00-1.28 mg/L and 0.00-20.98 mg/L respectively. The inhibition zone of postbiotics on E. coli and S. paratyphi A were 11.67 and 12.33 mm respectively. Two different levels of postbiotics (25% and 50%) were used in LDB to measure the diamines (cadaverine and putrescine) polyamines (agmatine spermidine and spermine ammonia) and other biogenic amine formation by pathogens. E. coli produced cadaverine and putrescine with concentrations of 1072.21 and 1114.18 mg/L respectively. The postbiotics reduced cadaverine formation by 67% in E. coli and cadaverine production was mostly suppressed by postbiotics from P. acidilactici in E. coli (97%) and L. lactis subsp. lactis in S. paratyphi A (90%). Putrescine production by E. coli was reduced by 94% with postbiotics of P. acidilactici at a concentration of 25% whereas putrescine production by S. paratyphi A has been decreased by 61% in the presence of postbiotics from L. lactis subsp. Lactis with a 25% concentration. The results revealed that an increase in postbiotics concentration (from 25% to 50%) in LDB may lead to synergistic effects resulting from the pro-duction of biogenic amines by microbial pathogens. It was importantly concluded that postbiotics of LAB may degrade biogenic amines or prevent their formation by foodborne pathogens.
Citation - WoS: 51
Citation - Scopus: 54
Using system dynamics to assess the environmental management of cement industry in streaming data context
(ELSEVIER, 2020-05) Esra Ekinci; Yigit Kazancoglu; Sachin Kumar Mangla; Ekinci, Esra; Kazancoglu, Yigit; Mangla, Sachin Kumar
The cement industry can be regarded as one of the major sources of anthropogenic air pollution. It uses a significant amount of energy while creating substantial amount of potentially health-threatening carbon monoxide (CO) sulfur dioxide (SO2) nitrogen oxides (NOx) and dust partides. Hence the cement industry can be regarded as a primary area for study in the development of green manufacturing. In this study an urban cement factory is analyzed. The major contribution of the article is the development of a holistic approach to identify the variables impacting cement production and environmental factors creating air pollution in the area a system dynamics model has been developed incorporating streaming data. To understand the effect of a cement factory on an urban area some strategic level decisions are also analyzed with the study in order to reveal their impact on environment. The impact of cement production on air pollution cannot be evaluated separately from other air quality factors, therefore the contribution of each factor has to be identified in order to understand the specific issues affecting a region. With the use of the model future implications of various air quality factors on environmental sustainability can be assessed. According to the results PM10 value which is currently above the World Health Organization (WHO) air pollution critical level of 50 mu g/m(3) for 30% of the days in a year will dimb to more than 50% in 2023. Moreover governments can also recognize the severe impacts of location selection for cement industries unplanned and excessive building licensing and uncontrolled immigration on environment of an urban living. Therefore output of the study is potentially beneficial in guiding governmental decisions to ensure the sustainability of air quality. (C) 2020 Elsevier B.V. All rights reserved.

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