نتایج جستجو برای: protective device

تعداد نتایج: 788881  

Journal: :International wound journal 2010
Karen E Campbell M Gail Woodbury Pamela E Houghton

To implement and evaluate a heel pressure ulcer prevention program (HPUPP) for orthopaedic patients. Program development of HPUPP involved input from administrators, staff and adult patients on an orthopaedic service in an academic tertiary care facility, located in a small urban centre in Canada. Prospective evaluation was conducted. Consensus exercises with clinical staff and administrators (...

Journal: :The Annals of occupational hygiene 2002
M P Clayton B Bancroft B Rajan

The British Standards Institution 'Guide to implementing an effective respiratory protective device programme' (BS 4275) lists assigned protection factors (APFs) for various types of respiratory protective equipment (RPE). The APFs were allocated either on the basis of available workplace studies data which met set criteria or on the basis of professional judgement that there is equivalence bet...

Journal: :International journal of occupational safety and ergonomics : JOSE 2000
M Dźwiarek

In the process of testing an electrosensitive protective system, determining its response time is of crucial importance. A unique double penetration method of measuring electrosensitive protective device (ESPD) response time has been worked out in the Central Institute for Labour Protection. In the first step, low speed penetration enables the detection zone border to be localised. In the secon...

Journal: :The Journal of prosthetic dentistry 2014
Fei Liu Vernon Y Kwok John R Agar

Maxillectomy often leads to oralnasal or excessive oral-pharyngeal communication. The remaining teeth may need further preparation for various reasons, including crown or fixed dental prosthesis restoration. High-volume water is used in conjunction with highspeed tooth preparation to avoid the excessive heat generation that could endanger the health of the pulp. The water aerosol generated by t...

2010
Heli Koskinen

Noise is usually defined either unwanted sound or sound that is harmful to the hearing. Earlier studies have shown that musicians are exposed to sound levels that can be harmful to hearing, and thus music can be considered as noise. Studies have also shown that musicians have hearing problems due to prolonged music exposure. This is also the case among classical musicians. According to the new ...

Journal: :Comput. Sci. Inf. Syst. 2010
Zhou Zeng Zhuang Ma Li Zuoyong Zheng

This paper investigates methodologies for locating and identifying the components on a printed circuit board (PCB) used for surface mount device inspection. The proposed scheme consists of two stages: solder joint extraction and protective coating extraction. Solder joints are extracted by first detecting all the highlight areas, and then recognizing and removing the invalid highlight areas whi...

2015
M. S. El-Bages

Frequent Switching of arc furnace in steel company causes a great effect on the insulation of arc furnace transformer winding which in turn may causes a shutdown of production for long periods of time. Therefore, it is necessary to study and analyze the causes of these outages and design an adequate protective device. In this paper the transient overvoltage resulted from vacuum circuit breaker ...

Journal: :British journal of sports medicine 2002
N Biasca S Wirth Y Tegner

The number of minor traumatic brain injury (mTBI), cerebral concussions, is increasing and cannot be eliminated by any kind of equipment. Prevention strategies, such as the introduction of "checking from behind" rules have become effective in decreasing the number of severe spinal injuries. A new "head checking" rule should reduce mTBI in the same way in the following years. Mouthguards should ...

Journal: :acta medica iranica 0
haddad p behruzi h dehshiri k zarpak b

craniospinal irradiation plus posterior fossa boost (cs1) is the standard modality of post-operative treatment of patient with medulloblastoma, but considering the technical difficulties and limited facilities, often whole- brain irradiation plus posterior fossa boost (wbi) had been used in our institution until 1991. tust a retrospective study was undertaken to compare the patients treated by ...

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