This case indicates that workers may develop respiratory problems, including asthma when using 3D printers. Further investigation of the specific airborne emissions and health problems from 3D printing is warranted.
Our finding of frequently reported respiratory symptoms suggests a need for additional studies on exposed workers in this field.
In this article we analyse the translation of global women's rights ideas in a local context, based on an ethnographic study of three women's organizations from Baroda, Gujarat state, India. On a macro‐level, the local social and cultural norms, the development context, and the nature and role of the state strongly shaped the translation process. Micro processes of translation depend on the organization's core activity, the actors who direct the translation and where they are culturally anchored. Translation involves meaning‐making, which consists of several simultaneous processes, including recuperation, hybridization, simplification and compartmentalization. The direction of the translation process is not linear, but resembles a spiral with ideas moving from global to local to global. Lastly, there are different types of translators, including converters, generators, conveyers, adaptors and transformers.
The aim of this study was to determine concentrations of particulates and volatile organic compounds (VOCs) emitted from 3D printers using polylactic acid (PLA) filaments at a university workroom to assess exposure and health risks in an occupational setting. Under typical-case (one printer) and worst-case (three printers operating simultaneously) scenarios, particulate concentration (total and respirable), VOCs and formaldehyde were measured. Air samples were collected in the printing room and adjacent hallway. Size-resolved levels of nano-diameter particles were also collected in the printing room. Total particulate levels were higher in the worst-case scenario (0.7 mg/m 3 ) vs. typical-case scenario (0.3 mg/m 3 ). Respirable particulate and formaldehyde concentrations were similar between the two scenarios. Size-resolved measurements showed that most particles ranged from approximately 27 to 116 nm. Total VOC levels were approximately 6-fold higher during the worst-case scenario vs. typical situation with isopropyl alcohol being the predominant VOC. Airborne concentrations in the hallway were generally lower than inside the printing room. All measurements were below their respective occupational exposure limits. In summary, emissions of particulates and VOCs increased when multiple 3D printers were operating simultaneously. Airborne levels in the adjacent hallway were similar between the two scenarios. Overall, data suggest a low risk of significant and persistent adverse health effects. Nevertheless, the health effects attributed to 3D printing are not fully known and adherence to good hygiene principles is recommended during use of this technology.
BackgroundIce, or freezing rain storms have the potential to affect human health and disrupt normal functioning of a community. The purpose of this study was to assess acute health impacts of an ice storm that occurred in December 2013 in Toronto, Ontario, Canada.MethodsData on emergency department visits were obtained from the National Ambulatory Care Reporting System. Rates of visits in Toronto during the storm period (December 21, 2013 – January 1, 2014) were compared to rates occurring on the same dates in the previous five years (historical comparison) and compared to those in a major unaffected city, Ottawa, Ontario (geographic comparison). Overall visits and rates for three categories of interest (cardiac conditions, environmental causes and injuries) were assessed. Rate ratios were calculated using Poisson regression with population counts as an offset. Absolute counts of carbon monoxide poisoning were compared descriptively in a sub-analysis.ResultsDuring the 2013 storm period, there were 34 549 visits to EDs in Toronto (12.46 per 1000 population) compared with 10 794 visits in Ottawa (11.55 per 1000 population). When considering year and geography separately, rates of several types of ED visits were higher in the storm year than in previous years in both Toronto and Ottawa. Considering year and geography together, rates in the storm year were higher for overall ED visits (RR: 1.10, 95 % CI: 1.09-1.11) and for visits due to environmental causes (RR: 2.52, 95 % CI: 2.21-2.87) compared to previous years regardless of city. For injuries, visit rates were higher in the storm year in both Toronto and Ottawa, but the increase in Toronto was significantly greater than the increase in Ottawa, indicating a significant interaction between geography and year (RR: 1.23, 95 % CI: 1.16-1.30).ConclusionsThis suggests that the main health impact of the 2013 Ice Storm was an increase in ED visits for injuries, while other increases could have been due to severe weather across Ontario at that time. This study is one of the first to use a population-level database and regression modeling of emergency visit codes to identify acute impacts resulting from ice storms.
Among inner-city populations in Canada, the use of crack cocaine by inhalation is prevalent. Crack smoking is associated with acute respiratory symptoms and complications, but less is known about chronic respiratory problems related to crack smoking. There is also a gap in the literature addressing the management of respiratory disease in primary health care among people who smoke crack. The purpose of our study was to assess the prevalence of acute and chronic respiratory symptoms among patients who smoke crack and access primary care. We conducted a pilot study among 20 patients who currently smoke crack (used within the past 30 days) and who access the "drop-in clinic" at an inner-city primary health care center. Participants completed a 20- to 30-min interviewer-administered survey and provided consent for a chart review. We collected information on respiratory-related symptoms, diagnoses, tests, medications, and specialist visits. Data were analyzed using frequency tabulations in SPSS (version 19.0). In the survey, 95 % (19/20) of the participants reported having at least one respiratory symptom in the past week. Thirteen (13/19, 68.4 %) reported these symptoms as bothersome. Chart review indicated that 12/20 (60 %) had a diagnosis of either asthma or chronic obstructive pulmonary disease (COPD), and four participants (4/20, 20 %) had a diagnosis of both asthma and COPD. Majority of the participants had been prescribed an inhaled medication (survey 16/20, 80 %; chart 12/20, 60 %). We found that 100 % (20/20) of the participants currently smoked tobacco, and 16/20 (80 %) had smoked both tobacco and marijuana prior to smoking crack. Our study suggests that respiratory symptoms and diagnoses of asthma and COPD are prevalent among a group of patients attending an inner-city clinic in Toronto and who also smoke crack. The high prevalence of smoking tobacco and marijuana among our participants is a major confounder for attributing respiratory symptoms to crack smoking alone. This novel pilot study can inform future research evaluating the primary health care management of respiratory disease among crack smokers, with the aim of improving health and health care delivery.
Swanson and Colman provide a muchneeded analysis of associations between exposure to suicide and suicidality outcomes among Canadian youth. 1 Youth suicide in Canada cannot be fully understood without consideration of First Nations, Inuit or Métis populations. Some researchers conclude that suicide among Aboriginal people must be considered a different disease from suicide among non-Aboriginal people, with its own antecedent causes. 2,3 Suicide rates are 5 to 7 times higher for First Nations youth than for non-Aboriginal youth, and rates among Inuit youth are about 11 times the national average. 4,5 Suicide clusters among First Nations youth have been widely reported. 4,6 Swanson and Colman are mistaken in their description of their data source as a "population-based nationally representative cohort." The Canadian National Longitudinal Survey of Children and Youth "excludes children living on Indian reserves or Crown lands … and residents of some remote regions." 7 Such an exclusion should have been identified and addressed among the study's limitations. Researchers and editors must attend to health equity dimensions of their work, especially when allegedly representative data prevents us from attending to underserviced groups. Not only are there disparities between the health of Aboriginal and non-Aboriginal Canadians, but an epidemiological gap prevents researchers from understanding and addressing such problems. Some scholars have expressed concern that a lack of data sources including Aboriginal populations may represent a "concerted effort by the government to diminish the collection of data about Aboriginal health conditions." 8 Aboriginal leadership and national agencies have called for research to take place through reciprocal trusting relationships between researchers and Aboriginal people. 9 This should never offer a convenient excuse to exclude Aboriginal peoples from national studies when such a relationship has not been established. Scholars exploring subjects with important Aboriginal dimensions should have to defend choices to overlook these populations in purportedly national or representative studies.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.