منابع مشابه
Technology of manually operated sampler pipets.
We have evaluated the performance of manually operated sampler pipets. Twenty-four instruments of various construction, manufacture, and delivery volume were evaluated. Pipet-delivered water and serum were repeatedly weighed under controlled environmental conditions, and precision and accuracy assessed. The pipets often failed to meet the manufacturer’s stated tolerance limits. Consumers should...
متن کاملErgonomics evaluation of a manually operated cassava chipping machine.
A manually operated machine for chipping cassava was evaluated. Six farmers took part in the study, with physiological, postural, and subjective measurements being taken. Using the machine resulted in drudgery and postural discomfort. Following an iterative design process and using appropriate anthropometric measurements, an improved, adjustable prototype was developed. This was tested with the...
متن کاملVariability of exposure and estimation of cumulative exposure in a manually operated coal mine.
This study aims at estimating variability in exposure to respirable dust and assessing whether the a priori grouping by job team is appropriate for an exposure-response study on respiratory effects among workers in a manually operated coal mine in Tanzania. Furthermore, estimated exposure levels were used to calculate cumulative exposure. Full-shift personal respirable dust samples (n = 204) we...
متن کاملSafe to Handle? Comparing Manually and Machine-Washed Medical Devices.
The goal of medical device reprocessing is to ensure that a given device is ready for safe use on the next patient. Effective cleaning of devices is critical to achieving this goal. Device cleaning also has had an ancillary goal: rendering the device safe for handling with ungloved hands by sterile processing personnel. Such personnel are tasked with preparing the device for further reprocessin...
متن کاملSignature Verification on Finger Operated Touchscreen Devices
The increasing number of smartphone users and the involved increased amount of privacy critical information that these users carry around call for improved methods to protect this data. Biometric authentication methods have one important advantage when compared to a password. A biometric trait contains more information, which is harder to copy, steal or reproduce. Modern smartphones are general...
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ژورنال
عنوان ژورنال: International Journal for Research in Applied Science and Engineering Technology
سال: 2020
ISSN: 2321-9653
DOI: 10.22214/ijraset.2020.30908