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A residual tilt after a teleseismic earthquake is described in this work. The results of static and dynamic modeling of this event fit the measured values. The conditions that make observations of residual deformations of teleseismic events possible and the prospects for using the tiltmeter network for monitoring seismically active regions are discussed. [ABSTRACT FROM AUTHOR]

Serious agriculture - related accidents are increasing and tractor overturning is one of the most important factors leading to death in farms in Iran. In fact, the interplays between tractor operator and environment cause such damages. There are several reasons involved in tractors overturn that the recent method in tractor design is nearly to improve with using the electronics instrumentation that gives the operator key guides related to the tractor's stability as it is operated. In this study a new system was developed. To measure a steep slope land electromagnetic gauge was constructed. The working principles of the slope gauge, based on the magnetic feld were changed by changing the slope of the ground. The embedded inclinometer within the pendulum inclinometers with their period are used to altering the magnetic feld. The output of inclinometer analog and the voltage range was (47/2-32/0) V. This information was then processed by a microprocessor, and an assessment of rollover potential was reported to the display device. [ABSTRACT FROM AUTHOR]

BACKGROUND: Low back pain (LBP) is the most common work-related musculoskeletal problem among healthcare workers including nurses. Awkward trunk postures have been recognized as one common problem in this group OBJECTIVE: The aims of this study were to: a) continuously assess trunk postures for an entire shift work in various hospital wards, and b) examine the relationship between the duration of exposure to awkward trunk postures and the occurrence of low back pain (LBP) among nurses. METHODS: Eighty nurses from eight wards in a hospital participated in this cross-sectional study. The prevalence of LBP was determined using the revised Nordic Musculoskeletal Questionnaire. Full-shift work trunk posture exposure was measured using an inclinometer. RESULTS: The prevalence of LBP among hospital nurses was 72%. The highest percentage of time spent in awkward postures in the sagittal plane (trunk flexion ≥45°) and in the frontal plane (lateral bend ≥20°) was recorded in the general (65.6% ± 12.2) and orthopedic (48.4% ± 7.4) wards, respectively. Logistic regression analyses showed that the duration of exposure to awkward trunk postures had a significant relationship with LBP (P < 0.05). CONCLUSIONS: The results highlight the potential risks of nursing job in terms of frequent and extreme trunk awkward postures, which may lead to the development of LBP. The findings can help to develop guidelines regarding prioritizing ergonomic interventions to reduce the prevalence of LBP among hospital nurses. [ABSTRACT FROM AUTHOR]