Re-use of health masks after autoclaving

Factorization of re nement masks of function vectors

Considering the set of closed shift invariant subspaces Vj j Z of L lR generated by a re nable function vector we give necessary and su cient conditions for the re nement mask of ensur ing controlled approximation order m In particular algebraic poly nomials can be exactly reproduced in V if and only if the re nement mask of can be factorized The results are illustrated by B splines with multip...

Use of containment pans and lids for autoclaving caustic solutions.

As a means of decontaminating instruments possibly exposed to Creutzfeldt-Jakob disease, the World Health Organization has recommended immersion and autoclaving in sodium hydroxide. However, this recommendation has raised concerns of possible damage to autoclaves, and hazards to operators as a result of the caustic vapors. A series of experiments has been conducted that demonstrate that there a...

Child health services after re-organisation.

A criticism of the World Health Organization Advice on the use of masks in the community in the context of COVID-19 outbreak

Commentary.

Use of disposable face masks for public health protection against SARS.

The paper by Syed et al, 1 provides observations on the use of face masks by members of the public for protection against the severe acute respiratory syndrome (SARS) corona-virus (CoV). The authors' raise an important question as to whether masks are effective in preventing disease. The type of masks used can generally be categorised as either surgical or paper and are suggested to offer simil...