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We investigated the impact of human activity during COVID-19 on the tropospheric nitrogen dioxide vertical column density (NO2 TropVCD) at three urban sites (Gwangju and Busan in Korea and Yokosuka in Japan) and one remote site (Cape Hedo in Japan) from Multi-Axis Differential Optical Absorption Spectroscopy (MAX-DOAS) and Pandora. Compared to the monthly mean NO2 TropVCD from 2015 to 2018 and in 2019, the values were lower in 2020 due to social distancing in Korea and Japan. High negative relative changes were observed from May to September (-30% to -18%) at the three urban sites;Cape Hedo, a remote site, did not show a significant difference in relative changes between previous years and 2020, suggesting that only anthropogenic emission sources decreased dramatically. In the case of Yokosuka, the 15-day moving average of the NO2 TropVCD exhibited a good relationship with transportation (R = 0.48) and industry (R = 0.54) mobility data. In contrast, the NO2 TropVCD at the Korean sites showed a moderate to low correlation with the industrial sector and insignificant correlations with transportation. The differences in correlations might be caused by the different social distancing policies in Korea (voluntary) and Japan (mandatory). By applying generalized boosted models to exclude meteorological and seasonal effects associated with NO2 TropVCD variations, we revealed that the decreasing trend from 2019 to 2020 was much steeper than that from 2015 to 2020 (a factor of two), and a significant change was identified in January 2020, when the first cases of COVID-19 were observed in both Korea and Japan. This result confirmed that the reduction in NO2 can be largely explained by the NOx emission reduction resulting from social distancing for COVID-19 rather than annual meteorological differences;however, in December 2020, NO2 recovered suddenly to its previous level due to an increase in human activities.
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[...]the vehicle of the future must be considered within the broader framework of the mobility of the future, taking into account the entire value chain. Transforming our future into a sustainable future: planning for the automotive transition Didier Sepulchre de Condé, Mechanical industry The automotive industry is in turmoil, firstly because of the economic situation, with a market deeply affected by Covid, shortages of materials and components and disoriented customers;and secondly because of the structural situation, with the forced transition to electrification. The four paradoxes of the ecological transition of the European car industry Alois Kirchner, Former Director of Cabinet of the Minister for Industry The energy transition in the automotive sector is essential for achieving French and European climate objectives. [...]the actions implemented come up against four paradoxes, which must be overcome if this transition is to succeed: * the regulation on the reduction of CO2 emissions from the tank to the wheel, to the exclusion of other sources which now represent the majority of emissions from new vehicles;* the steering of vehicle traffic restrictions based on Crit'air stickers, leading to the prohibition of access to certain cities for vehicles that are more virtuous than others that are still allowed to enter;* the inability to implement policies to support the production of vehicles on European soil that are sufficiently powerful to halt the fall in associated jobs;a situation that benefits production sites that are not subject to the same environmental standards;* and the rising price of "green" vehicles, leading to a slowdown in the renewal of the fleet and the maintenance of a high level of pollution and carbon emissions.
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As the operation of buildings accounts for around 30% of global CO2 emissions, reducing their energy consumption is considered crucial for climate change mitigation. Aware of this significance, the sustainable HCI (SHCI) community has conducted research on energy consumption for over 15 years. However, compared with domestic environments, commercial organisations are comprised of complex mixed-use buildings, and the socio-technical understanding of space and resulting energy use are relatively under-explored. In this late-breaking work, we present the initial findings of a longitudinal analysis that uses building energy data from a period covering the COVID-19 lockdown measures to help identify the energy associated with these buildings and their users. Viewing the pandemic as a unique, grand-scale 'energy intervention', the resulting consumption patterns are used to inform questions about leverage points for achieving change, stakeholder agency vs. infrastructure demand;and highlight the importance of putting energy data in context. © 2023 Owner/Author.
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Objective To describe audiological symptoms, audiometric profile, and distortion product otoacoustic emission in symptomatic patients recovering from SARS-CoV-2 infection (positive RT-PCR test) and asymptomatic patients (negative RT-PCR test). Methods An analytical cross-sectional study was conducted using data obtained from clinical charts, physical examination, audiometry, and distortion product otoacoustic emission on 40 patients [case patients (CP)] recovering from SARS-CoV-2 infection diagnosed by a positive RT-PCR test and 22 asymptomatic participants with a negative RT-PCR test [non-case (NC)]. Results Sixty-two patients (mean age: 31.1 and 28.2 years in the CP and NC groups, respectively) were included. All participants were young without significant comorbidities, risk factors for hearing loss or otological history. Vertigo (5%), tinnitus (17.5%) and aural fullness/hearing loss (35%) were found in the CP group. A statistically significant difference was found in specific frequencies (1000, 4000, and 8000 Hz) and pure tone average (low and high conversational frequencies with increased threshold in the PC group compared with the NC group), which was not found in distortion product otoacoustic emission. Conclusion Audiovestibular symptoms are frequent in symptomatic patients recovering from SARS-CoV-2 infection. SARS-CoV-2 infection was consistently associated with an increased audiometric hearing threshold at specific frequencies and low tone average.
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PurposeIn the context of heightened awareness and understanding of responsible tourism, it has become increasingly imperative for luxury hotels to introspect on the impact of their operations on environmental and social sustainability. This study aims at examining the prevalence and growth of sustainability practices in the Indian luxury hotel segment as it increasingly competes on a global platform.Design/methodology/approachThe research approach adopted in this paper is qualitative and emic. Primary data is gathered for the study through semi-structured interviews with select luxury hotel general managers from four hotel chains of Indian origin – ITC Luxury Hotels, Oberoi Hotels and Resorts, Taj Hotels and Palaces and The Leela – to gain an insight into sustainability initiatives adopted in the Indian hospitality industry. Secondary research data regarding the eco-friendly, green measures implemented in these hotels is collected primarily from the websites of the respective hotel chains and supplemented by review of academic literature, media articles, industry reports and company press releases.FindingsThe findings of the study reveal that Indian luxury hotel brands are increasingly adopting green products and integrating innovative sustainability practices in their day-to-day operations. However, several of these initiatives are in the non-customer-facing domains such as the engineering and back-of-the-house operations. Very few Indian hotel chains are building these sustainability initiatives into their core philosophy and embedding it in the front-line customer service experience at their properties to reinforce the green image of the hotels.Originality/valueThe paper also proposes the 6Cs Framework of Sustainability that can be utilised to categorise the green sustainable practices adopted in responsible hotels in a simplistic manner under six broad verticals. Practitioners, researchers and educationists in the hospitality industry would find the implications of this study useful in the context of a post-pandemic world where sustainability is influencing consumer choices across industries in today's eco-conscious and enlightened business and marketing environment.
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Anthropogenic aerosols mask the climate warming caused by greenhouse gases (GHGs). In the absence of observational constraints, large uncertainties plague the estimates of this masking effect. Here we used the abrupt reduction in anthropogenic emissions observed during the COVID-19 societal slow-down to characterize the aerosol masking effect over South Asia. During this period, the aerosol loading decreased substantially and our observations reveal that the magnitude of this aerosol demasking corresponds to nearly three-fourths of the CO2-induced radiative forcing over South Asia. Concurrent measurements over the northern Indian Ocean unveiled a ~7% increase in the earth's surface-reaching solar radiation (surface brightening). Aerosol-induced atmospheric solar heating decreased by ~0.4 K d−1. Our results reveal that under clear sky conditions, anthropogenic emissions over South Asia lead to nearly 1.4 W m−2 heating at the top of the atmosphere during the period March–May. A complete phase-out of today's fossil fuel combustion to zero-emission renewables would result in rapid aerosol demasking, while the GHGs linger on.
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Cleaning and saving the forest is related to managing and utilizing forests' biodiversity, productivity, and considering the relevant environment. Plastic waste management is now seen as an important goal for sustainable forest use as well as incorporating recycled plastics into products. Another way that industries impact wildlife and forests is by releasing additives such as industrial gases, organic & inorganics materials, plastic & resins, fertilizers & alkalies, and chlorine. Polymer wastes manage to enter into and harm numerous biological functions of animals. In this work, the concept of sustainable Türkiye's forest practices and addressing the impact of plastic waste on the forests and environment before and during the COVID-19 epidemic are discussed along with current sources of those mentioned materials wastes that manage to enter the environment. Through this work, the data of bio thermochemistry and thermodynamics calculations of such polymers have been investigated to exhibit the range of sustainability and unsustainability of those mentioned polymers and resins in the environment due to forest climate change. Since the Türkiye chemical industry is one of the most important industrial factors, their production contributes in similar proportions to greenhouse gas emissions. Interestingly, low data on energy usage in the factories and chemical industry is available in the public domain. Ethylene production is the major product in terms of the production volume of the petrochemical industry. Nitrogenous fertilizer production is a very energy-intensive industry, producing a variety of fertilizers and other nitrogen compounds. In addition, ammonia, chlorine, and caustic soda are the most important mediator chemical material used as the main compound for almost all products. © 2023 by the authors.
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The theoretical model of the relationship among dose-response function parameters, quantum emission rate, and basic reproductive number for SARS-CoV-2 was constructed. Then, using this model, infection fields and pathways for SARS-CoV-2 and its variant were estimated. The parameters of the time activity, the number of contacts by the microenvironments and groups, and the COVID-19 risk from multiple pathways in near and far fields were used. Consequently, in lower transmissibility, droplet spray transmission in the near field was dominant, whereas in higher transmissibility, transmission from inhalation of smaller aerosols in the far field was dominant. Moreover, it was suggested that transmission from droplet spray, indirect contacts, and inhalation of smaller aerosols in the near field and inhalation of smaller aerosols in the far field was dominant for the wild-type strain, while transmission from inhalation of smaller aerosols in the far field were dominant for the Delta variant. © 2022 17th International Conference on Indoor Air Quality and Climate, INDOOR AIR 2022. All rights reserved.
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This study combines particle measurements and acoustic measurements to study aerosols generated in breathing, speaking, singing and coughing. Particle measurements are carried out using a portable measurement chamber designed specially for the study. Acoustic measurements of voice production are conduced to standardize measurements in human aerosol emission and to reveal possible reasons for the individual differences in particle generation. Understanding mechanisms of human aerosol generation is important in trying to understand how the airborne transmission of pathogens takes place and furthermore in assessing how to minimize the risk of transmission. The results can be used in the context of all airborne diseases. © 2022 17th International Conference on Indoor Air Quality and Climate, INDOOR AIR 2022. All rights reserved.
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The best way to think about the climate emergency is to imagine humanity has just arrived at a new planet somewhere in a distant galaxy. After all, as scientists tell us, our planet Earth will soon look like a new planet, with conditions radically changed from the 'climate niche' of the past 10,000 years, during which human civilization developed. Once settled on the new planet, our task is to terraform it, to build a new natural environment fit for human life and human flourishing. My general approach to the politics of climate change thus differs from the most common view among environmentalists. I do not believe we can speak of climate change as a product of the Anthropocene, the human-built world. Our inability to control the consequences of climate change shows this is still at heart a natural process, one triggered by human beings or, more specifically, by our limited ability to control natural processes and therefore by our incapacity to control the unintended consequences of our actions and choices. The solution to the climate emergency is not to exit the Anthropocene but, intriguingly, to enter it for the first time. The world building is a task significantly full of existential meaning and urgency.
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The global outbreak of COVID-19 caused serious threats to public health and economic growth all around the world, but on the other hand, the betterment of the environment took place. How pandemics' health uncertainty will affect environmental quality is a crucial matter to address. The paper investigates the asymmetric association between pandemics-related health uncertainty and greenhouse gas emissions (GHG) in the top emitter European Union economies (Italy, Germany, France, Poland, Netherlands, Spain, Czech Republic, Belgium, Romania, and Greece). Employing data from 1996 to 2019, a unique approach called 'Quantile-on-Quantile', is adopted to evaluate the influence of various quantiles of the health uncertainty on GHG emissions. According to estimates, health uncertainty enhances environmental quality by minimizing GHG in most of our chosen nations at certain quantiles of data, which makes pandemics a blessing in disguise for environmental quality. Additionally, the estimations indicate that the grades of asymmetry between our variables varies by locality, accentuating the requisite for authorities to give specific consideration while executing health uncertainty and environmental quality policies.
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INTRODUCTION: The environmental impact of hospitals and healthcare providers practices is substantial, although often unnoticed and infrequently tracked. A green and healthy hospital is one that promotes public health by continuously monitoring and reducing its environmental impact. METHODS: We adopted a descriptive case study design with a multi-dimensional evaluation and monitoring of carbon emission equivalence (CO2e) using two examples from a tertiary care hospital practice in Oman. One example (1) was related to inhalation anaesthetic gases (IAG) consumption and the second example (2) was related to estimation of telemedicine clinics (TMCs) CO2e travel-related savings. RESULTS: The cumulative consumption of three different (1) IAG over three years (2019, 2020, 2021) was generated with estimated CO2e for each year for sevoflurane, isoflurane and desflurane. Desflurane had the lowest consumption with a yearly cumulative consumption of 6000 mL, 1500 mL, and 3000 mL for the years 2019, 2020 and 2021. The (2) TMCs during the first two years of the COVID-19 pandemic travel related CO2e savings were in the range of 12.65-3483.1 tonnes. In the second year of launching this service it doubled to a range of 24-6610.5 tonnes of CO2e savings. CONCLUSION: A green and healthy hospital approach of tracking and monitoring environmental impact of healthcare providers practices is critical for health planning and management of the environmental policy. This case study illustrated the importance of closely tracking hospital-based practices from an environmental perspective towards a green hospital approach.