Emissions from Metallic Powder and High Energy-Based Process – Thermal Spraying, Powder Atomization, and Additive Manufacturing – Knowledge Refresh

2021 ◽  
Author(s):  
G. Darut ◽  
S. Dieu ◽  
B. Schnuriger ◽  
A. Vignes ◽  
O. Le Bihan ◽  
...  
Keyword(s):  
Ultrafine Particles ◽  
Scientific Literature ◽  
Health And Safety ◽  
Thermal Spraying ◽  
High Energy ◽  
Filtration Efficiency ◽  
Safety Measures ◽  
Worker Exposure ◽  
Lack Of Information ◽  
Manufacturing Knowledge

Abstract This paper addresses a need for information on nanoparticle emissions and related issues such as worker exposure, filtration efficiency, and dustiness. A survey has been conducted on the working conditions and safety measures used in thermal spray companies and the results compared to scientific literature and previous surveys. Responses to questions on matters of health and safety reveal a lack of information and awareness of the risks posed by the emissions of ultrafine particles generated by thermal spraying processes.

scholarly journals Safe and Effective Use of Ozone as Air and Surface Disinfectant in the Conjuncture of Covid-19

Gases ◽  
2020 ◽  
Vol 1 (1) ◽  
pp. 19-32
Author(s):  
Elena Grignani ◽  
Antonella Mansi ◽  
Renato Cabella ◽  
Paola Castellano ◽  
Angelo Tirabasso ◽  
...  
Keyword(s):  
Organic Molecules ◽  
Scientific Literature ◽  
Toxic Substance ◽  
Health And Safety ◽  
Emergency Situation ◽  
Ambient Air ◽  
Public Places ◽  
Safety Measures ◽  
Effective Use

The present paper extrapolates quantitative data for ozone virucidal activity on the basis of the available scientific literature data for a safe and effective use of ozone in the appropriate cases and to explore the safety measures developed under the stimulus of the current emergency situation. Ozone is a powerful oxidant reacting with organic molecules, and therefore has bactericidal, virucidal, and fungicidal actions. At the same time, it is a toxic substance, having adverse effects on health and safety. Its use is being proposed for the disinfection of workplaces’ and public places’ atmosphere, and for disposable masks and personal protective equipment disinfection for reuse, with particular reference to the COVID-19 pandemic outbreak. Ozone can be generated in situ by means of small, compact ozone generators, using dried ambient air as a precursor. It should be injected into the room that is to be disinfected until the desired ozone concentration is reached; after the time needed for the disinfection, its concentrations must be reduced to the levels required for the workers’ safety. The optimal use of ozone is for air and surface disinfection without human presence, using a concentration that is effective for the destruction of viruses, but not high enough to deteriorate materials.

scholarly journals Occupational Health and Safety Measures in German Outpatient Care Services during the COVID-19 Pandemic: A Qualitative Study

2021 ◽  
Vol 18 (6) ◽  
pp. 2987
Author(s):  
Mara Shirin Hetzmann ◽  
Natascha Mojtahedzadeh ◽  
Albert Nienhaus ◽  
Volker Harth ◽  
Stefanie Mache
Keyword(s):  
Occupational Health ◽  
Outpatient Care ◽  
Qualitative Content Analysis ◽  
Health And Safety ◽  
Occupational Health And Safety ◽  
Work Organisation ◽  
Safety Measures ◽  
Care Services ◽  
Health Threats ◽  
Company Doctor

Due to the coronavirus disease 2019 (COVID-19) pandemic, outpatient caregivers are exposed to new serious health threats at work. To protect their health, effective occupational health and safety measures (OHSM) are necessary. Outpatient caregivers (n = 15) participated in semi-structured telephone interviews in May/June 2020 (1) to examine the pandemic-related OHSM that have been implemented in their outpatient care services, as well as (2) to identify their corresponding unmet needs. Interviews were recorded, transcribed and analysed by using qualitative content analysis in accordance with Mayring. Available OHSM in outpatient care services described by outpatient caregivers mainly included personal protective equipment (PPE) and surface disinfection means after an initial shortage in the first peak of the pandemic. Further OHSM implied social distancing, increased hygiene regulations and the provision of pandemic-related information by the employer, as well as the possibility to consult a company doctor. Our study revealed that OHSM were largely adapted to the health threats posed by COVID-19, however an optimum has not yet been achieved. There is still a need for improvement in the qualitative and quantitative supply of PPE, as well as on the organisational level, e.g., with regard to the development of pandemic plans or in work organisation.

Handeczema and occupational health and safety measures

2021 ◽  
Vol 128 (6) ◽  
pp. 323-330
Author(s):  
D. Romijn-Bucarciuc ◽  
G.C. Maessen ◽  
M.B. Visch
Keyword(s):  
Occupational Health ◽  
Health And Safety ◽  
Occupational Health And Safety ◽  
Safety Measures

Plasma Spheroidized Alumina/Zircon Mixtures

2000 ◽  
Author(s):  
Y. Li ◽  
K.A. Khor
Keyword(s):  
Thermal Spraying ◽  
Processing Parameters ◽  
High Energy ◽  
Molten State ◽  
Composite Powders ◽  
Spray Process ◽  
Plasma Spheroidization ◽  
Plasma Spray Process ◽  
Energy Ball ◽  
Spheroidized Powder

Abstract The plasma-spray process is specified by the associated processing parameters, where these influence the properties of the resultant deposits. This article describes the preparation and processing of composite powders for use in thermal spraying by mixing high purity zircon and alumina powders. The spheroidized powder were obtained by high energy ball milling and rapid solidification from the molten state during plasma spraying. The article discusses the processes involved in spray drying and plasma spheroidization, describing thermal analysis and mullitization kinetics in the spheroidized alumina/zircon mixtures.

scholarly journals Factors Affecting the Implementation of Health and Safety in Supermarkets in Kenya

2015 ◽  
Vol 5 (2) ◽  
pp. 223
Author(s):  
Kaaria Ann Gaceri
Keyword(s):  
Health And Safety ◽  
Target Population ◽  
Corporate Identity ◽  
Human Resource Managers ◽  
Validity And Reliability ◽  
Safety Measures ◽  
Factors Affecting ◽  
Resource Managers ◽  
Commercial World ◽  
The Government

In today’s rapidly changing commercial world ‘retail design’ is taking on the great importance than ever before both in terms of selling a company’s products and promoting an organizations’ corporate identity (Onwong’a,Mamati, Kangu &Osongo, 2010) .The purpose of this study was to evaluate the factors affecting the implementation of health and safety measures in supermarkets in Kenya; A survey of Supermarkets in Kenya.The implementation of health and safety measures at workplaces is minimal and yet it goes without doubt that if properly implemented, workplace accidents, injuries and illness would decrease in number. The research study was thus to facilitate the understanding of the benefit to implementing health and safety measures, thereby enhancing the acceptance in organizations.The study was be guided by the following specific objectives, to establish whether leadership influences the implementationof health and safety measures in supermarkets in Kenya,to find out whether employee training influences the implementation of health and safety measures in supermarkets on Kenya,andto establish whether employee participation influences the implementation of health and safety measures in supermarkets in Kenya.  The study employed a descriptive research design (Sekaran, 2006).Data analysiswas aided by SPSS Version 17(Marija, 2008). The target population was the general retail merchandise in Kenya while the study population wasHuman Resource Department Staff in supermarkets with more than 10 outlets in Kenya. The study was a census of supermarkets with more than 10 outlets and hence the sample size was equal to the study population.Primary data was collected using self administered questionnaires. A pilot test was conducted to test the validity and reliability of the research instruments. The study employed descriptive statistics and data analysis was performed using both qualitative and quantitative techniques.The final findings were presented using pie charts and statistical tables. This study will be of value to the human resource managers of the general retail merchandise industry, the government,research institutions, scholars and other private institutions.

scholarly journals Exposure Assessment to Radiofrequency Electromagnetic Fields in Occupational Military Scenarios: A Review

2022 ◽  
Vol 19 (2) ◽  
pp. 920
Author(s):  
Silvia Gallucci ◽  
Serena Fiocchi ◽  
Marta Bonato ◽  
Emma Chiaramello ◽  
Gabriella Tognola ◽  
...  
Keyword(s):  
Exposure Assessment ◽  
Military Personnel ◽  
Scientific Literature ◽  
Human Beings ◽  
Exposure Limits ◽  
Worker Exposure ◽  
Communication Devices ◽  
Directed Energy ◽  
The Military ◽  
Intended Use

(1) Background: Radiofrequency radiations are used in most devices in current use and, consequently, the assessment of the human exposure to the radiofrequency radiations has become an issue of strong interest. Even if in the military field there is wide use of radiofrequency devices, a clear picture on the exposure assessment to the electromagnetic field of the human beings in the military scenario is still missing. (2) Methods: a review of the scientific literature regarding the assessment of the exposure of the military personnel to the RF specific to the military environment, was performed. (3) Results: the review has been performed grouping the scientific literature by the typology of military devices to which the military personnel can be exposed to. The military devices have been classified in four main classes, according to their intended use: communication devices, localization/surveillance devices, jammers and EM directed-energy weapons. (4) Discussion and Conclusions: The review showed that in the exposure conditions here evaluated, there were only occasional situations of overexposure, whereas in the majority of the conditions the exposure was below the worker exposure limits. Nevertheless, the limited number of studies and the lack of exposure assessment studies for some devices prevent us to draw definitive conclusions and encourage further studies on military exposure assessment.

scholarly journals Health Risks Associated with the Consumption of Legumes Contaminated with Pesticides and Heavy Metals

2021 ◽  
Author(s):  
Motunrayo Ganiyat Akande
Keyword(s):  
Heavy Metals ◽  
Food Safety ◽  
Health Outcomes ◽  
Dietary Fiber ◽  
Health Effects ◽  
Health Risks ◽  
Scientific Literature ◽  
Human Beings ◽  
Safety Measures ◽  
Congenital Disabilities

Legumes have high nutritional value and they are important sources of protein, carbohydrates, fats and dietary fiber. The contamination of legumes with pesticides and heavy metals has been reported in scientific literature. Human beings are mainly exposed to the residues of pesticides and heavy metals through the dietary route. The purpose of this review chapter is to highlight the acute and chronic health risks that human beings may be exposed to as a result of the ingestion of legumes polluted with pesticides and heavy metals. Additionally, the mechanisms through which pesticides and heavy metals engender different undesirable health outcomes in human beings were stated. Scientific literature were perused and the information contained in them were collated to derive this chapter. Pesticides cause short-term health effects including hypersensitivity and mortality, while heavy metals induce acute effects like seizures and death. Some chronic untoward effects of pesticides are congenital disabilities and neurological damage. Heavy metals elicit disorders like anemia, hypertension and cancer. It is envisaged that the findings documented in this review will create awareness of the health risks posed by the contamination of legumes with the residues of pesticides and heavy metals so that food safety measures can be enforced globally.

scholarly journals High school and equivalent schools in the occupational health and safety occupational health and safety hazards outsideLise ve dengi okullarda iş sağlığı ve güvenliği ile iş sağlığı ve güvenliği dışındaki tehlikeler

2016 ◽  
Vol 13 (1) ◽  
pp. 1514
Author(s):  
Özcan Deliönü ◽  
Zafer Utlu
Keyword(s):  
High School ◽  
Occupational Health ◽  
General Education ◽  
Health And Safety ◽  
Occupational Health And Safety ◽  
Job Security ◽  
Group Discussions ◽  
Safety Hazards ◽  
Safety Measures ◽  
General Education Courses

The purpose of this study is; information about the high school or equivalent teachers working in schools, job security is to determine the hidden dangers other than thought and safety measures related to safety at school and work to contribute to the solution of this problem. Qualitative research methods, including six managers in the survey conducted by 17 professional technical teachers and 15 classes participated in a total of 32 teachers group culture. Focus group discussions and one-to-one interviews done with information about the job security teachers what hidden dangers beyond thought and safety measures related to safety in schools that have been investigated. Situated in Şişli high school or equivalent and Kâğıthane district schools in the study were selected. Studies on the safety of vocational and technical teachers as a result of general education courses according to their teachers as more information has emerged they have a business need. Also, it is seen that they are shareholders in the implementation of measures related to safety of vocational technical teacher. A number of problems arise with different and varied perspectives on security related more students remaining in the determination of the danger out of business safety measures in schools. ÖzetBu çalışmanın amacı; lise ve dengi okullarda çalışan öğretmenlerin iş güvenliği ile ilgili bilgileri, okullarındaki iş güvenliği ile ilgili düşünceleri ve iş güvenliği tedbirleri dışındaki gizli tehlikeleri belirlemek ve bu sorunun çözümüne katkıda bulunmaya çalışmaktır. Nitel araştırma yöntemi ile gerçekleştirilen bu araştırmaya altısı yönetici olmak üzere, 17 mesleki teknik öğretmen ve 15 kültür dersleri grubu toplam 32 öğretmen katılmıştır. Odak grup görüşmeleri ve bire bir görüşmeler yapılarak öğretmenlerin iş güvenliği ile ilgili bilgileri, okullarındaki iş güvenliği ile ilgili düşünceleri ve iş güvenliği tedbirleri dışındaki gizli tehlikelerin neler olduğu araştırılmıştır. Araştırmada Şişli ve Kâğıthane ilçesinde yer alan lise ve dengi okullar seçilmiştir. Yapılan çalışma sonucunda mesleki teknik öğretmenlerin iş güvenliği konusunda genel kültür dersleri öğretmenlerine göre işin gereği olarak daha çok bilgi sahibi oldukları ortaya çıkmıştır. Ayrıca, genel olarak mesleki teknik öğretmenlerin iş güvenliği ile ilgili tedbirlerin alınmasında pay sahibi oldukları görülmektedir. Okullarda iş güvenliği tedbirleri dışında kalan tehlikelerin belirlenmesinde ise daha çok öğrencilerle ilgili bir takım problemler ile güvenliğe yönelik farklı ve çeşitli görüşler ortaya çıkmaktadır.

scholarly journals The growth of interest for astronomical X-ray polarimetry

2018 ◽  
Author(s):  
Frédéric Marin
Keyword(s):  
Quantitative Assessment ◽  
Supernova Remnant ◽  
Scientific Literature ◽  
High Energy ◽  
X Ray ◽  
Highly Sensitive ◽  
In The Beginning ◽  
First Time

Astronomical X-ray polarimetry was first explored in the end of the 60's by pioneering rocket instruments. The craze arising from the first discoveries on stellar and supernova remnant X-ray polarization led to the addition of X-ray polarimeters on-board of early satellites. Unfortunately, the inadequacy of the diffraction and scattering technologies required to measure polarization with respect to the constraints driven by X-ray mirrors and detectors, coupled to long integration times, slowed down the field for almost 40 years. Thanks to the development of new, highly sensitive, compact X-ray polarimeters in the beginning of the 2000's, the possibility to observe astronomical X-ray polarization is rising again and scientists are now ready to explore the high energy sky thanks to modern X-ray polarimeters. In the forthcoming years, several X-ray missions (both rockets, balloons and satellites) will open a new observational windows. A wind of renewal blows over the area of X-ray polarimetry and this paper presents for the first time a quantitative assessment, all based on scientific literature, of the growth of interest for astronomical X-ray polarimetry.

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