scholarly journals Global emissions of VOCs from compressed aerosol products

Elem Sci Anth ◽  
2021 ◽  
Vol 9 (1) ◽  
Author(s):  
Amber M. Yeoman ◽  
Alastair C. Lewis
Keyword(s):  
Economic Status ◽  
Montreal Protocol ◽  
Passenger Cars ◽  
Middle Income ◽  
Voc Emissions ◽  
Product Formulation ◽  
Global Emission ◽  
Order Of Magnitude ◽  
The Uk ◽  
Global Emissions

Disposable compressed gas aerosols have been a ubiquitous part of life since the mid-1950s. The signing of the Montreal Protocol in 1987 led to aerosol propellants changing from halocarbons to less damaging replacements; around 93% of current aerosol emissions by mass are volatile organic compounds (VOCs), with small contributions from compressed air (6.6%) and fluorocarbons (0.4%). The global consumption of aerosol units has increased significantly since the signing of the Montreal Protocol, increasing by an order of magnitude in some countries. In high-income countries, annual consumption increased through the 1990s and 2000s, typically reaching a plateau of approximately 10 ± 3 units person–1 year–1 dependant on product preferences. The largest contributors of both units and mass emissions are personal care products (PCPs). Consumption of aerosols in lower- and upper-middle income countries are growing rapidly, for example, Brazil, Mexico, China, Thailand, all tripling reported consumption since 2006. Based on evidence drawn from national production estimates, product specifications and formulations, and interpolation of usage between countries of similar economic status, we estimate global emissions of VOC from aerosol propellants were approximately 1.3 ± 0.23 Tg year–1 in 2018. The fraction of anthropogenic VOC emissions accounted for by aerosols has in some countries increased significantly as emissions from vehicles and fuels have declined. For example, in the UK, 6.1% of anthropogenic VOC emissions were from aerosols in 2017, more than were released from gasoline passenger cars. Should low- and middle-income economies grow consumption per capita in line with recent trends, then we project global aerosol consumption may reach approximately 4.4 ± 0.96 × 1010 units year–1 in 2050. Should existing national and international policies on aerosol product formulation remain unchanged, and VOCs remain the dominant propellant, compressed aerosols could account for a global emission of approximately 2.2 ± 0.48 Tg year–1 in 2050.

scholarly journals Experiences and impact of international medical volunteering: a multi-country mixed methods study

BMJ Open ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. e041599 ◽  
Author(s):  
Mary McCauley ◽  
Joanna Raven ◽  
Nynke van den Broek
Keyword(s):  
Low Income ◽  
Online Survey ◽  
Positive Impact ◽  
Healthcare Providers ◽  
International Medical ◽  
Middle Income ◽  
Use Of Resources ◽  
The Uk ◽  
Medical Volunteers ◽  
The Impact

ObjectiveTo assess the experience and impact of medical volunteers who facilitated training workshops for healthcare providers in maternal and newborn emergency care in 13 countries.SettingsBangladesh, Ghana, India, Kenya, Malawi, Namibia, Nigeria, Pakistan, Sierra Leone, South Africa, Tanzania, UK and Zimbabwe.ParticipantsMedical volunteers from the UK (n=162) and from low-income and middle-income countries (LMIC) (n=138).Outcome measuresExpectations, experience, views, personal and professional impact of the experience of volunteering on medical volunteers based in the UK and in LMIC.ResultsUK-based medical volunteers (n=38) were interviewed using focus group discussions (n=12) and key informant interviews (n=26). 262 volunteers (UK-based n=124 (47.3%), and LMIC-based n=138 (52.7%)) responded to the online survey (62% response rate), covering 506 volunteering episodes. UK-based medical volunteers were motivated by altruism, and perceived volunteering as a valuable opportunity to develop their skills in leadership, teaching and communication, skills reported to be transferable to their home workplace. Medical volunteers based in the UK and in LMIC (n=244) reported increased confidence (98%, n=239); improved teamwork (95%, n=232); strengthened leadership skills (90%, n=220); and reported that volunteering had a positive impact for the host country (96%, n=234) and healthcare providers trained (99%, n=241); formed sustainable partnerships (97%, n=237); promoted multidisciplinary team working (98%, n=239); and was a good use of resources (98%, n=239). Medical volunteers based in LMIC reported higher satisfaction scores than those from the UK with regards to impact on personal and professional development.ConclusionHealthcare providers from the UK and LMIC are highly motivated to volunteer to increase local healthcare providers’ knowledge and skills in low-resource settings. Further research is necessary to understand the experiences of local partners and communities regarding how the impact of international medical volunteering can be mutually beneficial and sustainable with measurable outcomes.

scholarly journals Military and demographic predictors of mental ill-health and socioeconomic hardship among UK veterans

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
H. Burdett ◽  
N. T. Fear ◽  
S. Wessely ◽  
R. J. Rona
Keyword(s):  
Socioeconomic Status ◽  
Common Mental Disorders ◽  
Economic Status ◽  
Childhood Adversity ◽  
Armed Forces ◽  
Sociodemographic Factors ◽  
Post Traumatic Stress ◽  
Length Of Service ◽  
Socioeconomic Outcomes ◽  
The Uk

Abstract Background Around 8% of the UK Armed Forces leave in any given year, and must navigate unfamiliar civilian systems to acquire employment, healthcare, and other necessities. This paper determines longer-term prevalences of mental ill health and socioeconomic outcomes in UK Service leavers, and how they are related to demographic factors, military history, and pre-enlistment adversity. Methods This study utilised data from a longitudinal sample of a cohort study UK Armed Forces personnel since 2003. A range of self-reported military and sociodemographic factors were analysed as predictors of probable Post-Traumatic Stress Disorder, common mental disorders, alcohol misuse, unemployment and financial hardship. Prevalences and odds ratios of associations between predictors and outcomes were estimated for regular veterans in this cohort. Results Veteran hardship was mostly associated with factors linked to socio-economic status: age, education, and childhood adversity. Few military-specific factors predicted mental health or socio-economic hardship, except method of leaving (where those leaving due to medical or unplanned discharge were more likely to encounter most forms of hardship as veterans), and rank which is itself related to socioeconomic status. Conclusion Transition and resettlement provisions become increasingly generous with longer service, yet this paper shows the need for those services becomes progressively less necessary as personnel acquire seniority and skills, and instead could be best targeted at unplanned leavers, taking socioeconomic status into consideration. Many will agree that longer service should be more rewarded, but the opposite is true if provision instead reflects need rather than length of service. This is a social, political and ethical dilemma.

scholarly journals Adherence to Food-Based Dietary Guidelines: A Systemic Review of High-Income and Low- and Middle-Income Countries

Nutrients ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 1038
Author(s):  
Ana Carolina B. Leme ◽  
Sophia Hou ◽  
Regina Mara Fisberg ◽  
Mauro Fisberg ◽  
Jess Haines
Keyword(s):  
English Language ◽  
Economic Status ◽  
High Income ◽  
Dietary Guidelines ◽  
Systemic Review ◽  
Healthy Children ◽  
Future Health ◽  
Middle Income ◽  
Middle Income Countries ◽  
Low And Middle Income

Research comparing the adherence to food-based dietary guidelines (FBDGs) across countries with different socio-economic status is lacking, which may be a concern for developing nutrition policies. The aim was to report on the adherence to FBDGs in high-income (HIC) and low-and-middle-income countries (LMIC). A systematic review with searches in six databases was performed up to June 2020. English language articles were included if they investigated a population of healthy children and adults (7–65 years), using an observational or experimental design evaluating adherence to national FBDGs. Findings indicate that almost 40% of populations in both HIC and LMIC do not adhere to their national FBDGs. Fruit and vegetables (FV) were most adhered to and the prevalence of adhering FV guidelines was between 7% to 67.3%. HIC have higher consumption of discretionary foods, while results were mixed for LMIC. Grains and dairy were consumed below recommendations in both HIC and LMIC. Consumption of animal proteins (>30%), particularly red meat, exceeded the recommendations. Individuals from HIC and LMIC may be falling short of at least one dietary recommendation from their country’s guidelines. Future health policies, behavioral-change strategies, and dietary guidelines may consider these results in their development.

scholarly journals Net-zero emission vehicles shift and equitable ownership in low-income households and communities: why responsible and circularity business models are essential

2021 ◽  
Vol 2 (1) ◽  
Author(s):  
Nana O. Bonsu
Keyword(s):  
Air Pollution ◽  
Low Income ◽  
Value Chain ◽  
Business Models ◽  
Industrial Revolution ◽  
Technological Development ◽  
Middle Income ◽  
Net Zero ◽  
Zero Emission ◽  
The Uk

AbstractThe UK Plan for a Green Industrial Revolution aims to ban petrol and diesel cars by 2030 and transition to electric vehicles (EVs). Current business models for EV ownership and the transition to net-net zero emissions are not working for households in the lowest income brackets. However, low-income communities bear the brunt of environmental and health illnesses from transport air pollution caused by those living in relatively more affluent areas. Importantly, achieving equitable EV ownership amongst low-and middle-income households and driving policy goals towards environmental injustice of air pollution and net-zero emissions would require responsible and circular business models. Such consumer-focused business models address an EV subscription via low-income household tax rebates, an EV battery value-chain circularity, locally-driven new battery technological development, including EV manufacturing tax rebates and socially innovative mechanisms. This brief communication emphasises that consumer-led business models following net-zero emission vehicles shift and decisions must ensure positive-sum outcomes. And must focus not only on profits and competitiveness but also on people, planet, prosperity and partnership co-benefits.

scholarly journals Changing trends and emissions of hydrochlorofluorocarbons and their hydrofluorocarbon replacements

2016 ◽  
Author(s):  
Peter G. Simmonds ◽  
Matthew Rigby ◽  
Archibold McCulloch ◽  
Simon O'Doherty ◽  
Dickon Young ◽  
...  
Keyword(s):  
Growth Rates ◽  
Montreal Protocol ◽  
Hfc 134A ◽  
Production And Consumption ◽  
Ozone Depleting Substances ◽  
Phase Out ◽  
Article 5 ◽  
The Impact ◽  
Global Emissions

Abstract. High frequency, in situ global observations of HCFC-22 (CHClF2), HCFC-141b (CH3CCl2F), HCFC-142b (CH3CClF2) and HCFC-124 (CHClFCF3) and their main HFC replacements HFC-134a (CH2FCF3), HFC-125 (CHF2CF3), HFC-143a (CH3CF3), and HFC-32 (CH2F2) have been used to determine their changing global growth rates and emissions in response to the Montreal Protocol and its recent amendments. The 2007 adjustment to the Montreal Protocol required the accelerated phase-out of HCFCs with global production and consumption capped in 2013, to mitigate their environmental impact as both ozone depleting substances and important greenhouse gases. We find that this change has coincided with a reduction in global emissions of the four HCFCs with aggregated global emissions in 2015 of 444 ± 75 Gg/yr, in CO2 equivalent units (CO2 e) 0.75 ± 0.1 Gt/yr, compared with 483 ± 70 Gg/yr (0.82 ± 0.1 Gt/yr CO2 e) in 2010. (All quoted uncertainties in this paper are 1 sigma). About 80 % of the total HCFC atmospheric burden in 2015 is HCFC-22, where global HCFC emissions appear to have been relatively constant in spite of the 2013 cap on global production and consumption. We attribute this to a probable increase in production and consumption of HCFC-22 in Montreal Protocol Article 5 (developing) countries and the continuing release of HCFC-22 from the large banks which dominate HCFC global emissions. Conversely, the four HFCs all show increasing annual growth rates with aggregated global HFCs emissions in 2015 of 329 ± 70 Gg/yr (0.65 ± 0.12 Gt/yr CO2 e) compared to 2010 with 240 ± 50 Gg/yr (0.47 ± 0.08 Gt/yr CO2 e). As HCFCs are replaced by HFCs we investigate the impact of the shift to refrigerant blends which have lower global warming potentials (GWPs). We also note that emissions of HFC-125 and HFC-32 appear to have increased more rapidly during the 2011–2015 5-yr period compared to 2006–2010.

Biological enhancement of soil carbonate precipitation: passive removal of atmospheric CO2

2008 ◽  
Vol 72 (2) ◽  
pp. 639-649 ◽  
Author(s):  
D. A. C. Manning
Keyword(s):  
Plant Biomass ◽  
Mineral Weathering ◽  
Carbonate Precipitation ◽  
Silicate Minerals ◽  
Fine Grained ◽  
Pedogenic Carbonates ◽  
Cement Manufacture ◽  
Order Of Magnitude ◽  
Clean Contaminated ◽  
The Uk

AbstractSoils are the dominant terrestrial sink for carbon, containing three times as much C as above-ground plant biomass, and acting as a host for both organic and inorganic C, as soil organic matter and pedogenic carbonates, respectively. This article reviews evidence for the generation within the soil solution of dissolved C derived from plants and recognition of its precipitation as carbonates. It then considers the potential value of this process for artificially-mediated CO2 sequestration within soils. The ability of crops such as wheat to produce organic acid anions as root exudates is substantial, generating 70 mol/(y kg) of exuded C, equivalent to the plant's own ‘body weight’. This is still an order of magnitude less than measured C production from Icelandic woodlands (Moulton et al., 2000), which have no other possible source of C. Thus, there is apparently no shortage of available dissolved C, as bicarbonate in solution, and so the formation of pedogenic carbonates will be controlled by the availability of Ca. This is derived from mineral weathering, primarily of silicate minerals (natural plagioclase feldspars and pyroxenes; artificial cement and slag minerals). Within the UK, existing industrial arisings of calcium silicate minerals from quarrying, demolition and steel manufacture that are fine-grained and suitable for incorporation into soils are sufficient to account for 3 MT CO2 per year, compensating for half of the emissions from UK cement manufacture. Pursuing these arguments, it is shown that soils have a role to play as passive agents in the removal of atmospheric CO2, analogous to the use of reed beds to clean contaminated waters.

scholarly journals Mental healthcare in Hungary: contradictions and possibilities

2010 ◽  
Vol 7 (2) ◽  
pp. 36-38 ◽  
Author(s):  
Tamás Kurimay
Keyword(s):  
Health Spending ◽  
Mental Healthcare ◽  
World Health ◽  
Minority Population ◽  
Official Language ◽  
The European Union ◽  
Middle Income ◽  
The Republic ◽  
Health Organization ◽  
The Uk

The Republic of Hungary is a landlocked country of 93000 km2 in central Europe; it is bordered by Austria, Slovakia, Ukraine, Romania, Serbia, Croatia and Slovenia. Its official language is Hungarian. Hungary joined the European Union (EU) in 2004. About 90% of the population of c. 10 million is ethnically Hungarian, with Roma comprising the largest minority population (6–8%). Currently classified as a middle-income country with a gross domestic product (GDP) of $191.7 billion (2007 figure), Hungary's total health spending accounted for 7.4% of GDP in 2007, less than the average of 8.9% among member states of the Organisation for Economic Co-operation and Development (OECD, 2009). The proportion of the total health budget for mental health is 5.1%, which is low when compared with, for instance, the UK (England and Wales 13.8%, Scotland 9.5%) (World Health Organization, 2008, p. 118, Fig. 8.1).

The Effects of Social Class and Dental Attendance on Oral Health

2008 ◽  
Vol 87 (1) ◽  
pp. 60-64 ◽  
Author(s):  
A.N. Donaldson ◽  
B. Everitt ◽  
T. Newton ◽  
J. Steele ◽  
M. Sherriff ◽  
...  
Keyword(s):  
Oral Health ◽  
Structural Equation ◽  
Dental Health ◽  
Economic Status ◽  
Equation Modeling ◽  
Final Model ◽  
Dental Attendance ◽  
Dental Health Survey ◽  
The Uk ◽  
The Relationship

The relationship between socio-economic status (SES) and oral health is well-established. We investigated whether the association between SES and the number of sound teeth in adults is explained by dental attendance patterns, in turn determined by the effect of SES on barriers to dental attendance. Data on 3817 participants from the 1998 Adult Dental Health Survey in the UK were analyzed. Using structural equation modeling, we found a model with 4 factors (aging, SES, attendance-profile, and barriers-to-dental-attendance) providing an adequate fit to the covariance matrix of the 9 covariates. The final model suggests that the association between SES and the number of sound teeth in adults in the UK is partially explained by the pathway [SES → barriers-to-dental-attendance → dental-attendance-profile → number-of-sound-teeth]. A direct relationship, SES → number-of-sound-teeth, is also significant.

scholarly journals A Study of Anthropometric and Socio-economic Factors Associated with Delayed Menarche in a Bengali Indian Population with Special Reference to BMI and 2D:4D Ratio

2013 ◽  
Vol 3 (4) ◽  
pp. 24-31
Author(s):  
Suddhasatta Ghosh ◽  
Dilip Mukherjee ◽  
Riddhi Dasgupta
Keyword(s):  
Economic Status ◽  
Medical Science ◽  
P Value ◽  
Economic Factors ◽  
Middle Income ◽  
Socio Economic Status ◽  
Parental Height ◽  
Age Of Menarche ◽  
Delayed Menarche ◽  
Socio Economic Factors

Introduction: The average age of menarche has declined over the last century but the magnitude of the decline and the factors responsible remain subjects of contention. Aims and Objectives: To study a group with delayed menarche in a cohort of Bengali Indian females with low to normal body weight. To investigate anthropometric characteristics (height, mid-parental height, weight, BMI), Socio-economic Status, Sexual Maturity Rating (SMR) stages and 2D: 4D ratio ( ratio of lengths of second and fourth digits of both hands) in those with delayed menarche. To analyse the correlation of these factors with delayed age of menarche. Materials and Methods: A total of 614 children , aged 11- 16 completed years, of low to middle income family groups and attending suburban schools, were evaluated on the basis of predetermined questionnaire and anthropometric measurements. Correlation of factors with delayed age of menarche was done by appropriate statistical methods Results and Analysis: Out of 190 children having delayed menarche (cases) and 424 children with normal age of menarche (controls) , the height percentile (p value: 0.642), BMI ( p value: 0.091), weight (p value: 0.12)and Mid-Parental Height (p value: 0.26) had no significant correlation , while SMR ( p value:0.00), 2D:4D ratio (p value:0.002) and low Socio-economic Status (p value: 0.00) had a significant correlation with delayed menarche. Conclusion: This study is the first to examine such a wide variety of anthropometric and socio-economic factors at a time in a single cohort of females with delayed menarche. DOI: http://dx.doi.org/10.3126/ajms.v3i4.5902 Asian Journal of Medical Science Vol.3(4) 2012 pp.24-31

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