Background: The spread of coronavirus can be greatly reduced by the usage face coverings, as corona virus is mainly through droplets when people talk, cough or sneeze, and airborne transmission. N95 respirator mask a protective device which used to filter out particles with very high efficiency, approximately up 95%. use in India has increased proportion due on-going pandemic. Objectives: const...

As regards the significant role of stethoscopes in the diagnosis of congenital and adventitious heart diseases and prevention of irreparable complications of these diseases, the quality of hearing sound of these stethoscopes by a physician has a significant impact on the disease diagnosis. This device plays an important role in the early diagnosis of congenital heart and respiratory diseases an...

To the authors' knowledge there have been no previous reports on the protection afforded by powered filtering respirators in farmers with occupational asthma attributed to the inhalation of organic dust. In order to investigate this question, 26 farmers with occupational asthma were challenged with an exposure to work-related dusts for up to 60 min. This resulted in highly significant increases...

The British Standards Institution 'Guide to implementing an effective respiratory protective device programme' (BS 4275) lists assigned protection factors (APFs) for various types of respiratory protective equipment (RPE). The APFs were allocated either on the basis of available workplace studies data which met set criteria or on the basis of professional judgement that there is equivalence bet...

Correspondence to: Dr R M Howie, 12 Morningside Close, Edinburgh EH10 4DB, UK; robin.howie@ btclick.com _________________________ T his article is intended to outline the role of respiratory protective equipment (RPE) in a risk control programme and to provide advice on the steps in setting up and implementing an effective RPE programme so that occupational physicians can check the effectivenes...

BACKGROUND Until recently, the only available lung-protective treatment option for carbon dioxide removal due to severe, refractory status asthmaticus has been extracorporeal pump-driven membrane oxygenation (ECMO). Pumpless extracorporeal lung assist (pECLA) may serve as an alternative therapy for these patients. CASE REPORT A 42-year-old woman presented with an acute exacerbation of asthma ...

Introduction of personal protective equipment (PPE) in the process of quantitative exposure and risk assessment should be addressed carefully. PPE which have been designed and manufactured according to CE-criteria and have proved to pass relevant test criteria, can be classified as "proper functioning". However, test criteria for PPE are not equal to levels of protection which can be achieved i...

in this paper, simultaneous placement of distributed generation, capacitor bank and protective devices are utilized to improve the efficiency of the distribution network. the objectives of the problem are reduction of active and reactive power losses, improvement of voltage profile and reliability indices and increasing distribution companies’ profit. the combination of firefly algorithm, parti...