abstract background: previous studies have indicated an unspecific correlation between noise exposure and blood pressure disturbances. blood pressure disturbances could be caused by the environmental hazards such as noise exposure. the aim of this study is to analyze whether there is a relationship between noise exposure and hypertension. methods: atotal sample of 218 workers working in a small...

The Harvard community has made this article openly available. Please share how this access benefits you. Your story matters. et al. 2014. " TRIM28 regulates RNA polymerase II promoter proximal pausing and pause release. " Nature structural & molecular biology 21 (10): 876-883. Summary Promoter proximal pausing of RNA polymerase II (Pol II) is a major checkpoint in transcription. An unbiased sea...

The performances of five portable direct-reading dust monitors were investigated in a wind tunnel for a range of industrial dusts and three sizes of aluminium oxide test dust to mainly determine their suitability for measuring the inhalable fraction of airborne dust in workplaces. The instruments tested were Split 2 (SKC Ltd), Sidepak (TSI Inc.), Dataram (Thermo Electron Ltd), PDS-2 (Sibata Sci...

Bacteriophages are perceived to be good models for the study of airborne viruses because they are safe to use, some of them display structural features similar to those of human and animal viruses, and they are relatively easy to produce in large quantities. Yet, only a few studies have investigated them as models. It has previously been demonstrated that aerosolization, environmental condition...

We introduce two new cryptographic notions in the realm of public and symmetric key encryption. • Encryption with invisible edits is an encryption scheme with two tiers of users: “privileged” and “unprivileged”. Privileged users know a key pair (pk, sk) and “unprivileged” users know a key pair (pke, ske) which is associated with an underlying edit e to be applied to messages encrypted. Each key...

There is a need for a small personal aerosol sampler for measuring occupational exposure to airborne particles in the breathing zone. Existing aerosol samplers are too large to be mounted inside modern welder's protective equipment without disturbing the worker. A headset-mounted mini sampler has been developed to fill this gap with focus on manganese exposure. This mini sampler is easy to use ...