نتایج جستجو برای: scissors
تعداد نتایج: 1586 فیلتر نتایج به سال:
Background and aims: Despite automation, still many occupations require the use of hand tools in their routine activities. Scissors are essential tools for many workers in different occupations such as sewing and clothes making.The aim of this study was to investigate the effects of three re-designed models of sewing scissors (models A, B and C) on user performance, tool usability and hand and ...
Introduction: Scissors are essential tools in different occupations including sewing and clothes making. Improper design of fabric cutting scissors can lead to the development of musculoskeletal symptoms among users. The aim of this study was to evaluate pinch force and wrist posture while working with three designs of sewing scissors and a traditional sewing scissors. Methods: The first model...
Scissoring in thick bars suppresses buckling behavior in serpentine traces that have thicknesses greater than their widths, as detailed in a systematic set of analytical and experimental studies. Scissoring in thick copper traces enables elastic stretchability as large as ≈350%, corresponding to a sixfold improvement over previously reported values for thin geometries (≈60%).
[Purpose] The purpose of this study was to research the difference in wrist flexion and accuracy of left-handers when using regular scissors made for right-handed persons versus scissors made for left-handers. [Subjects and Methods] Eighteen left-handers participated in the experiment. There were ten males and eight females subjects. The degree of wrist flexion of 18 left-handers was analyzed w...
OBJECTIVE The aim of this cross-sectional study was to determine the frequency of carpal tunnel syndrome (CTS) among women using tea leaf scissors and compare it with normal population. METHODS Two hundred hands of 100 women using tea leaf scissors (tea leaf scissors group) and 112 hands of 56 healthy women (control group) were clinically and electrophysiologically evaluated for CTS. Women us...
The purpose of this study was to determine whether sectioning the cervical septum is associated with intraoperative bleeding, incompetent cervix, and secondary infertility. In this prospective observational study, fourteen women with complete septate uterus who had a history of repeated pregnancy loss and infertility were treated hysteroscopically. Preoperative history included 35 pregnanci...
blades, pivoted so that the sharpened edges of each blade slide against each other when the handles opposite to the joint or pivot are closed. The cutting edge of each blade is where the inner surface and the cutting surface meet (Figure 1). The two cutting edges cut as they slide over each other. The angle of the cutting surface is usually between 0 and 15 degrees from the horizontal. Scissors...
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