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Md. Mizanur Rahman and J.R.R. Mayer

Abstract

The touch trigger probe plays an important role in modern metrology because of its robust and compact design with crash protection, long life and excellent repeatability. Aside from coordinate measuring machines (CMM), touch trigger probes are used for workpiece location on a machine tool and for the accuracy assessment of the machine tools. As a result, the accuracy of the measurement is a matter of interest to the users. The touch trigger probe itself as well as the measuring surface, the machine tool, measuring environment etc. contribute to measurement inaccuracies. The paper presents the effect of surface irregularities, surface wetness due to cutting fluid and probing direction on probing accuracy on a machine tool.

Open access

Elizana Petrela, Genc Burazeri, Fatjona Pupuleku, Edmond Zaimi and Mizanur Rahman

Abstract

We assessed the prevalence and socioeconomic and behavioural correlates of hypertension in the young to middle-aged population of Albania, a transitional post-communist country in the Western Balkans. We analysed a sample of 2,837 men and 3,580 women aged 15 to 49 from the 2008/2009 Albanian Demographic and Health Survey. Hypertension was defined as SBP≥140 mm Hg, or DBP≥90 mm Hg, or if the subjects were under treatment for hypertension. Data on demographic and socioeconomic characteristics and behavioural factors were also collected. Logistic regression was used to assess the association of hypertension with covariates. Hypertension was significantly higher among men (27.3 %) than women (20.0 %), and significantly increased with age. The harmful effect of excessive weight and obesity on hypertension was stronger among women than among men and this effect increased with age, especially in women. Smoking and alcohol were risk factors for hypertension in men, but not women. Education had a protective effect on hypertension in women but not in men.