environmental protection has become one of the main concerns in developed economies, which is why an increasing degree of commitment in the field is required from all public and private bodies. environmental protection in firms must cease to be a secondary, barely profitable objective, involving the performance of sporadic remedial actions, and become just one more element of their organization...

nowadays nmr spectroscopy becomes a powerful tool in chemistry because of the nmr chemical shifts. hartree–fock theory and the gauge-including atomic orbital (giao) methods are used in the calculation of 29si nmr chemical shifts of various silicate species in the silicate solution as initial components for zeolite synthesis both in gas and solution phase. calculations have been performed at geo...

abstractthis study focused mainly on the shifts of the grammatical cohesion in texts translated from english into persian. it aimed to identify the grammatical cohesive devices (gcds) in st and tt separately, based on halliday and hassn's model (1976), determine the number of occurrences of gcds in two texts and finally, illustrate types of shifts of grammatical cohesion and strategies used in ...

introduction:today, shift work is considered as a necessity in many jobs and for some 24-hour services the use of shift-work is growing. however, shift work can lead to physiological and psycho-social problems for shift workers. this study aimed to determine the effects of shift work on the associated health problems, together with the demographic and job characteristics underlying the problems...

conclusions as a result of this study, it was found that critical care nurses with fixed shift schedules display more burnout in emotional exhaustion dimension, compared to those working with rotating shift schedules. results most of the participants were females (62.7%), aged between 22 - 29 years (38.5%), married (59.2%), and had a bachelor degree (86.9%). the mean score of emotional exhausti...

  Abstract   Background: Irregular Working hours, including night work and shift work, have been   found to be associated with alteration in various levels of biochemical factors. And some studies have showed association between shift work and blood biochemical disturbances in blood. In this epidemiological study we investigated, whether regular schedule of working hours can minimize the associ...

a bstract background: some health problems are more prevalent in shift workers than day workers. musculoskeletal disorders are considered as one of the most common health-related problems that can cause disability among health care workers. the aim of this study was to assess the associations between shift working and the prevalence of musculoskeletal symptoms (mss) among nursing personnel. mat...