background: nowadays medical equipment plays an important role in the treatment and in the medical education. using outdated preventive maintenance (pm) system may cause problems in the cutting edge medical equipment, nervous system disease’s equipment (in diagnosis and treatment) which are crucial for every medical center. based on above facts we focused on nervous system treat units’ equipmen...

conclusions the major risk factor of hcv infection was injection drug use. the patient’s awareness of his or her hcv status had a minor effect in reduction of illicit drug use and improvement in mmt retention. therefore, adequate counseling is necessary for drug users in mmt clinics in xi’an. background hepatitis c virus (hcv) infection rates in drug users vary among different regions of china....

conclusions the mmt program is an effective intervention to prevent hcv infection transmission, although it is essential to compare its effectiveness with other interventions before implementing it in nationwide. results of the 259 participants, 98.4% (255) were men, the mean age ± sd was 33.1 ± 7.58 years and hcv prevalence was 50%. the studied idus reported lower rate of risky injecting and s...

addiction to the illicit and prescribed use of opiate is an alarming public health issue. studies on addictive disorders have demonstrated severe nutritional deficiencies in opiate abusers with behavioral, physiological and cognitive symptoms. opiate addiction is also link with a significant number of diseases including human immunodeficiency virus (hiv), hepatitis c virus (hcv) and other blood...

Maintenance has been acknowledged by industrial management as a significant influencing factor of plant performance. Effective plant maintenance can be realized by developing a proper maintenance strategy. However, selecting an appropriate maintenance strategy is difficult because maintenance is a non-repetitive task such as production activity. Maintenance also does not leave a consistent trac...

Nowadays, more and more manufacturers realize the importance of adopting new maintenance technologies to enable systems to achieve near-zero downtime, so machinery prognostics that enables this paradigm shift from traditional fail-and-fix maintenance to a predict-and-prevent paradigm has arose interests from researchers. Machinery prognostics which could estimate machine condition and degradati...

many serious accidents have happened in the world, in which systems have been large-scale and complex, and caused heavy damage and a social sense of instability. furthermore, advanced nations have almost finished public infrastructure and rushed into a maintenance period. since maintenance is more important than production and construction, then more maintenance for environmental considerations...

background: methadone is considered a long-acting opioid agonist which is widely used in the treatment of drug addiction. it is believed that opioids can cause erectile dysfunction (ed) by inhibiting gonadotropin and testosterone release. this study is aimed at defining the possible effects of conservative treatment with methadone on erectile dysfunction in the addicts. methods: a total of 382 ...

objective: successful bonding of a dental implant to bone, which was referred to as osseointegration by branemark has been well documented. however, long-term prognosis of an implant depends on adequate maintenance and long-term care. an effective maintenance program is required to preserve the health of peri-implant tissues. several techniques have been suggested for this purpose but it is not...