scholarly journals Evaluation of Occupational Exposure of Bus Drivers to Road Particulate Matter in Bojnurd, Iran

Author(s):  
Faeze Sepahi Zoeram ◽  
Hamidreza Mehri ◽  
Meisam Faramarzi Koohsar ◽  
Maryam Hassan Zadeh ◽  
Morteza Esmaeilzadeh Kavaki

Background: Drivers of public vehicles, especially in highly polluted and crowded areas, are exposed to high air pollutants, especially particulate matter less than ten microns (PM10). The purpose of this study was to measure and evaluate the level of exposure of city bus drivers to PM10 particles in Bojnurd, Iran. Methods: This descriptive-analytical study was conducted in Bojnurd, Iran. A sampling of particulate matter was taken through bus drivers' respiratory area in two routes from the main routes of the city using the Haz-Dust device. This device has been designed and manufactured based on the NIOSH-500 method. Using an impactor 10, the amount of particulate matter less than ten microns was read from the device.  Particle sampling was performed in both round-trip buses in three shifts in the morning, noon, and evening for one year. The results of the measurements were statistically analyzed by descriptive statistics and mean statistical indices, independent t-test, Mann-Whitney test and One-way ANOVA test at 95% significance level by SPSS software version 24. Results: A total of 420 times, PM10 particles were measured in the drivers' respiratory area.  Approximately 21% of the measurement days had a concentration of more than 150 micrograms per cubic meter of air (or µg/m3). Measurements show that among 140 days of measurement, the highest concentration was on May 21 (with 380.66 µg/m3 of air), and the lowest concentration was on August 9 (with 35.33 µg/m3 of air). The average daily exposure of drivers in this one-year was 151.29 µg/m3 of air. Conclusion: The exposure of city bus drivers to PM10 particles in Bojnurd was much higher than recommended by the World Health Organization (50 µg/m3 of air) and slightly higher than the US Environmental Protection Agency standard (150 µg/m3 of air), which predisposes them to cardiovascular disease in the future. The active buses on these two routes did not use the air conditioning system, which allowed suspended particles to penetrate the bus from the outside. It is suggested that in order to reduce the drivers' exposure, effective control measures should be adopted and implemented as soon as possible, such as launching an air conditioning system equipped with a HEPA filter.

2020 ◽  
Author(s):  
Lukman Olagoke ◽  
Ahmet E. Topcu

BACKGROUND COVID-19 represents a serious threat to both national health and economic systems. To curb this pandemic, the World Health Organization (WHO) issued a series of COVID-19 public safety guidelines. Different countries around the world initiated different measures in line with the WHO guidelines to mitigate and investigate the spread of COVID-19 in their territories. OBJECTIVE The aim of this paper is to quantitatively evaluate the effectiveness of these control measures using a data-centric approach. METHODS We begin with a simple text analysis of coronavirus-related articles and show that reports on similar outbreaks in the past strongly proposed similar control measures. This reaffirms the fact that these control measures are in order. Subsequently, we propose a simple performance statistic that quantifies general performance and performance under the different measures that were initiated. A density based clustering of based on performance statistic was carried out to group countries based on performance. RESULTS The performance statistic helps evaluate quantitatively the impact of COVID-19 control measures. Countries tend show variability in performance under different control measures. The performance statistic has negative correlation with cases of death which is a useful characteristics for COVID-19 control measure performance analysis. A web-based time-line visualization that enables comparison of performances and cases across continents and subregions is presented. CONCLUSIONS The performance metric is relevant for the analysis of the impact of COVID-19 control measures. This can help caregivers and policymakers identify effective control measures and reduce cases of death due to COVID-19. The interactive web visualizer provides easily digested and quick feedback to augment decision-making processes in the COVID-19 response measures evaluation. CLINICALTRIAL Not Applicable


2015 ◽  
Vol 96 ◽  
pp. 355-361 ◽  
Author(s):  
Christian Schulze ◽  
Gabriele Raabe ◽  
Wilhelm J. Tegethoff ◽  
Juergen Koehler

2016 ◽  
Vol 20 (4) ◽  
pp. 445 ◽  
Author(s):  
E. Tosun ◽  
M. Bilgili ◽  
G. Tuccar ◽  
A. Yasar ◽  
K. Aydin

2021 ◽  

The first report of Coronavirus Disease 2019 (COVID-19) was presented in Wuhan, Hubei province, China, in December 2019 (1). COVID-19 is an infectious virus with a high level of spread. According to its fast pandemic condition in the world, it has been announced as an emergency of public health by the World Health Organization (WHO) related to its fast pandemic condition (1-3). Movements of population, communication among humans, and environmental factors cause the transfer of this virus. The most prevalent clinical symptoms include fever, cough, headache, muscle cramps, and fatigue (4). Different industries in different countries have faced many problems and even there were many days off in the world after the COVID-19 pandemic. The pharmaceutical industry, among all industries, has a unique and exclusive sensitivity according to the necessity in the production of pharmaceutical products. The pharmaceutical industry has been important since the past years as a complementary part of the primary process in the treatment of the patients that shows the significance of development in this industry. In the COVID-19 pandemic situation, pharmaceutical companies try to respond to the challenges in the supply chain, change the business process, and protect the health of the staff. If the epidemic of COVID-19 continues for a medium/long time, this will affect active supplies, necessary materials, and medication export/import. Moreover, it causes adverse effects on research and development (R&D) activities, production, and developmental projects related to improving the industry. Although the effect of global expansion has not been apparent yet, pharmaceutical companies should respond, improve, and develop. Therefore, during the COVID-19 pandemic situation, pharmaceutical companies should continue their activities and even develop it while facing many challenges. Moreover, it will help them detect the challenges and approaches of development in safety and health in pharmaceutical companies during the COVID-19 pandemic situation. Challenges of pharmaceutical companies in the COVID-19 pandemic situation include: 1) Hiding or lack of reports in COVID-19 affection; 2) Lack of appropriate monitoring of distribution vehicles in the prevention of infection; 3) Continual contacts with documents and internal permissions of products leading to the lack of supervision of health principles; 4) Production in closed and limited space; 5) Continual production line and necessity of team working; 6) Commotion of the personnel with public transportation and lack of knowledge in family health; 7) The physical presence of staff in administrative positions (R&D, marketing, IT, and planning); 8) Serving food in the restaurant of the company (breakfast, lunch, dinner, and snack); 9) Closing of air conditioning system in departments; 10) Lack of correct extrusion of produced wastes; 11) Lack of the attention of personnel on their health; and 12) The entrance of infected products and raw materials to the COVID-19. Solutions in safety and health improvement of pharmaceutical company in facing COVID-19 pandemic include: 1) Disinfection of the external surface of the vehicles which contain materials and raw materials barrels at the entrance; 2) Use of electronic forms for documentation, product permissions, other production processes, quality control, and Health and Safety Executive ; 3) Use of distancing between the personnel with separator and fresh air injection into the rooms with building management system equipment; 4) Supply of mask and shield for all staff in sufficient number, and control of the use, extirpation, and protection of documents; 5) Use of masks with cartridge and N95 pad in administrative departments in exposure to chemical materials and changing them according to standard; 6) Assignment of the dedicated vehicles to the staff communication and their disinfection; 7) The necessity of using masks by the staff during transportation; 8) Provision of the opportunity for administrative staff to work from long distance; 9) Installation of the bags and buckets for sanitary wastes (mask, gloves, and tissue); 10) Disinfection of air conditioning system based on WHO rules; 11) Disinfection of all spaces and surfaces per hour or after use; 12) Installation of automatic disinfection equipment at the entrance of all buildings and busy places; 13) Introduction of COVID-19 as a job sickness to fast identification and self-declaration of the staff and elimination of transferring chain; 14) Assignment of subvention to treatment and leave of absence with salary for COVID-19 patients; 15) Psychological consultation and call contact with COVID-19 patients; 16) Online monitoring of the personnel and their families with an online questionnaire; 17) Transfer and management of waste by mechanizing systems and trained executive team with personal protection equipment; 18) Arrangement of all internal and external meetings online; 19) Presentation of all training courses in online classes (sky-room webinar); 20) Risk assessment in facing COVID-19 patients based on age, background illness, facing jobs, and a team of colleagues; 21) Non-public quarantine of the staff according to the importance of medicine production; 22) Specialization in COVID-19 tests for a suspicious person; 23) Distribution of self-protect equipment and disinfectants among the staff’s families; 24) Quarantine of suffering, suspicious people or those who were in contact with suffering patients; 25) Quarantine of the products in the warehouse to eliminate the transporting chain of the infected products. Conclusion The pharmaceutical stability of industry and permanent presence is an inseparable part of treatment teams in the world. Therefore, the necessity of continual observation of environmental health in pharmaceutical companies and the staff health could develop the efficiency, health protection of the personnel, and consumers in the COVID-19 pandemic situation. Controlling the challenges, as the next step, helps the presence of pharmaceutical companies in the current condition. Therefore, international, national, and local organizations should emphasize the revision of health and safety standards in the workplace. In addition, the self-declaration of industries and physical observation is necessary to conduct the suggested solutions for the personnel health as a staff in the health area.


2013 ◽  
Vol 773 ◽  
pp. 43-46 ◽  
Author(s):  
Fa Yi Yan ◽  
Bo Yan Xu

A kind of potential fuel for vehicles is Liquefied Natural Gas (LNG) whose cryogenic energy can be recovered for vehicles air-conditioning system. In this paper, LNG city bus air-conditioning system utilizing LNG cold energy is concerned to be subject investigated. The design requirements of cold energy recovering for LNG city bus air-conditioning system are introduced and the project design is presented.


2011 ◽  
Vol 204-210 ◽  
pp. 327-331
Author(s):  
Jin Wang ◽  
Jing Jing Xin ◽  
You Tao Zhou ◽  
Xin Lin Li ◽  
Shu Sheng Li

Central air-conditioning energy consumption accounts for a large proportion of the buildings. And cold and heat source energy consumption accounts for about two-thirds of central air-conditioning system. For a research and development center in Shanghai, because cold and heat source capacity largely surpasses the actual demand, we propose to combine with cold sources of the two buildings. We call it "two-in-one" reconstruction. When cooling load is small, we use cold source in one building to support the two buildings. After implementation, by return on investment analysis, the average electric energy-saving rate is 9.6%. Investment can be recovered within one year.


2021 ◽  
Vol 42 (06) ◽  
pp. 828-838
Author(s):  
Jaffar A. Al-Tawfiq ◽  
Esam I. Azhar ◽  
Ziad A. Memish ◽  
Alimuddin Zumla

AbstractThe past two decades have witnessed the emergence of three zoonotic coronaviruses which have jumped species to cause lethal disease in humans: severe acute respiratory syndrome coronavirus 1 (SARS-CoV-1), Middle East respiratory syndrome coronavirus (MERS-CoV), and SARS-CoV-2. MERS-CoV emerged in Saudi Arabia in 2012 and the origins of MERS-CoV are not fully understood. Genomic analysis indicates it originated in bats and transmitted to camels. Human-to-human transmission occurs in varying frequency, being highest in healthcare environment and to a lesser degree in the community and among family members. Several nosocomial outbreaks of human-to-human transmission have occurred, the largest in Riyadh and Jeddah in 2014 and South Korea in 2015. MERS-CoV remains a high-threat pathogen identified by World Health Organization as a priority pathogen because it causes severe disease that has a high mortality rate, epidemic potential, and no medical countermeasures. MERS-CoV has been identified in dromedaries in several countries in the Middle East, Africa, and South Asia. MERS-CoV-2 causes a wide range of clinical presentations, although the respiratory system is predominantly affected. There are no specific antiviral treatments, although recent trials indicate that combination antivirals may be useful in severely ill patients. Diagnosing MERS-CoV early and implementation infection control measures are critical to preventing hospital-associated outbreaks. Preventing MERS relies on avoiding unpasteurized or uncooked animal products, practicing safe hygiene habits in health care settings and around dromedaries, community education and awareness training for health workers, as well as implementing effective control measures. Effective vaccines for MERS-COV are urgently needed but still under development.


2015 ◽  
Vol 15 (14) ◽  
pp. 8217-8299 ◽  
Author(s):  
S. Fuzzi ◽  
U. Baltensperger ◽  
K. Carslaw ◽  
S. Decesari ◽  
H. Denier van der Gon ◽  
...  

Abstract. The literature on atmospheric particulate matter (PM), or atmospheric aerosol, has increased enormously over the last 2 decades and amounts now to some 1500–2000 papers per year in the refereed literature. This is in part due to the enormous advances in measurement technologies, which have allowed for an increasingly accurate understanding of the chemical composition and of the physical properties of atmospheric particles and of their processes in the atmosphere. The growing scientific interest in atmospheric aerosol particles is due to their high importance for environmental policy. In fact, particulate matter constitutes one of the most challenging problems both for air quality and for climate change policies. In this context, this paper reviews the most recent results within the atmospheric aerosol sciences and the policy needs, which have driven much of the increase in monitoring and mechanistic research over the last 2 decades. The synthesis reveals many new processes and developments in the science underpinning climate–aerosol interactions and effects of PM on human health and the environment. However, while airborne particulate matter is responsible for globally important influences on premature human mortality, we still do not know the relative importance of the different chemical components of PM for these effects. Likewise, the magnitude of the overall effects of PM on climate remains highly uncertain. Despite the uncertainty there are many things that could be done to mitigate local and global problems of atmospheric PM. Recent analyses have shown that reducing black carbon (BC) emissions, using known control measures, would reduce global warming and delay the time when anthropogenic effects on global temperature would exceed 2 °C. Likewise, cost-effective control measures on ammonia, an important agricultural precursor gas for secondary inorganic aerosols (SIA), would reduce regional eutrophication and PM concentrations in large areas of Europe, China and the USA. Thus, there is much that could be done to reduce the effects of atmospheric PM on the climate and the health of the environment and the human population. A prioritized list of actions to mitigate the full range of effects of PM is currently undeliverable due to shortcomings in the knowledge of aerosol science; among the shortcomings, the roles of PM in global climate and the relative roles of different PM precursor sources and their response to climate and land use change over the remaining decades of this century are prominent. In any case, the evidence from this paper strongly advocates for an integrated approach to air quality and climate policies.


Author(s):  
Mao Mao ◽  
Xiaolin Zhang ◽  
Yamei Shao ◽  
Yan Yin

Spatiotemporal behaviors of particulate matter (PM2.5 and PM10) and trace gases (SO2, NO2, CO, and O3) in Hefei during the period from December 2013 to November 2015 are investigated. The mean annual PM2.5 (PM10) concentrations are 89.1 ± 59.4 µg/m3 (118.9 ± 66.8 µg/m3) and 61.6 ± 32.2 µg/m3 (91.3 ± 40.9 µg/m3) during 2014 and 2015, respectively, remarkably exceeding the Chinese Ambient Air Quality Standards (CAAQS) grade II. All trace gases basically meet the requirements though NO2 and O3 have a certain upward trend. Old districts have the highest pollution levels, followed by urban periphery sites and new districts. Severe haze pollution occurs in Hefei, with frequent exceedances in particulate matter with 178 (91) days in 2014 (2015). The abnormal PM2.5 concentrations in June 2014 attributed to agricultural biomass burning from moderate resolution imaging spectroradiometry (MODIS) wildfire maps and aerosol optical depth (AOD) analysis. PM2.5 is recognized as the major pollutant, and a longer interspecies relationship is found between PM2.5 and other criteria pollutants for episode days as compared to non-episode days. The air pollution in Hefei tends to be influenced by local primary emissions, secondary formation, and regional transport from adjacent cities and remote regions. Most areas of Anhui, southern Jiangsu, northern Zhejiang, and western Shandong are identified as the common high-potential source regions of PM2.5. Approximately 9.44 and 8.53 thousand premature mortalities are attributed to PM2.5 exposure in 2014 and 2015. The mortality benefits will be 32% (24%), 47% (41%), 70% (67%), and 85% (83%) of the total premature mortalities in 2014 (2015) when PM2.5 concentrations meet the CAAQS grade II, the World Health Organization (WHO) IT-2, IT-3, and Air Quality Guideline, respectively. Hence, joint pollution prevention and control measures need to be strengthened due to pollutant regional diffusion, and much higher health benefits could be achieved as the Hefei government adopts more stringent WHO guidelines for PM2.5.


2014 ◽  
Vol 694 ◽  
pp. 266-271
Author(s):  
Wei Kang Dang ◽  
Guo Qiang Xia ◽  
Yu Liang Zhong ◽  
Lin Yang ◽  
Chun Hua Sun ◽  
...  

The risks of air conditioning system were found out by analyzing safety accident in recent years, and the derivative and secondary disasters were identified about air conditioning system. On the basis of the theory of man-machine-environment-management of system safety analysis, the risk index system of the possibility and consequences severity was established by identifying the possibility and the consequence severity factors resulting in the occurrence of air conditioning. The risk grades were determined by using the risk matrix to conduct the risk assessment for air conditioning system of a Commercial building in Tianjin. The preventive measures and control safety measures were proposed for air conditioning system Security.


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