In this review we chart recent advances in what is at once an old and very new field of endeavour--the achievement of control of motion at the molecular level including solid-state and surface-mounted rotors, and its natural progression to the development of synthetic molecular machines. Besides a discussion of design principles used to control linear and rotary motion in such molecular systems...

background occupational accidents are a major problem in industries and work environments. objectives this study aimed to study the relationship between workers' life quality and occupational accidents. materials and methods this historical cohort study was conducted on 114 wood industry workers (living in the north of iran) involved in a job related accident over the past 10 years. among those...

This article presents a study on the accidents related to the use of products and services, as recorded at two emergency hospitals at the city São Luís, Brazil. The goal of the study was to evaluate the main types and causes of unintentional accidents as well as the more frequent injuries for further improvement of products and services. The study evaluated the victims profile (gender and age),...

Tanah Abang Blok A Wholesale Market is a modern wholesale center in Jakarta that has more than 10floors and to make it easier for visitors carry out activities move the first floor j another floor, verticaltransformation needed, namely an elevator. Elevators are needed streamline time, mileage, userpower reach other floors high-rise building. So this Tugas Akhir author takes thetitle Analisis p...

background injuries and accidents are the first cause of death in the first 5 years of children life in the world; the present study was conducted to investigate the extent and distribution of accidents in the infants under one year in hamadan province, iran. materials and methods:this cross-sectional descriptive-analytic study was carried out using of   data of injuries and accidents related t...

BACKGROUND Despite the significant morbidity and mortality associated with all-terrain vehicle (ATV) use in children, their use continues to increase dramatically. To determine the frequency and impact of spinal fractures in children and adolescents injured in ATV accidents, we reviewed all 4 of the available Kids' Inpatient Databases. METHODS The Kids' Inpatient Databases (http://www.ahrq.go...

BACKGROUND The horseracing training industry has largely been ignored in terms of active occupational health research. AIMS To provide baseline statistics on the specific nature and type of accidents that occurred in English horseracing stables during 2008. METHODS All 716 training yards/stables registered with the British Horseracing Authority were contacted in April/May 2009 to complete t...

(1) Background: An analysis of work-related accidents in paramedics in Poland by presenting the model and trend of accidents, accident rates and by identifying causes and results of accidents; (2) Methods: A retrospective analysis of medical documentation regarding work-related accidents in a multi-specialist hospital, located in central Poland, in the period 2005-2015. The study group included...