منابع مشابه
Further Study of Electric Dust Removal with Transparent Fork Electrodes
This study is a continuation of our previous work. In this experiment, transparent tin-doped indium oxide (ITO) fork electrodes with different width and spacing were coated on the glass substrates. The used dust particle size was smaller than 180 mesh. The effects of the electrode width, the electrode spacing, voltage, frequency, waveform, and the duty ratio on the dust removal efficiency were ...
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Long and pointed foreign objects in the stomach are difficult to remove by endoscopy, and they can cause complications such as perforation and impaction. The endoscopic removal of long and pointed objects involves the following principles: (1) presenting the blunt end cephalad to prevent perforation or impaction during extraction; (2) orienting the long axis of the object in the line of extract...
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this study investigates the cohesive devices used in the textbook of english for the students of psychology. the research questions and hypotheses in the present study are based on what frequency and distribution of grammatical and lexical cohesive devices are. then, to answer the questions all grammatical and lexical cohesive devices in reading comprehension passages from 6 units of 21units th...
Laparoscopic Removal of a Swallowed Dinner Fork from the Stomach: A Minimally-Invasive Management for Swallowed Gastrointestinal Foreign Bodies
Swallowed foreign bodies are common problems in emergency departments. Up to 90% of the foreign bodies pass spontaneously and 10 to 20% require an endoscopic removal [1]. Surgical intervention is indicated when large or sharp foreign bodies are involved because of the potential risk of perforation and obstruction. The surgical intervention may be laparotomy or laparoscopy. Advantages of laparos...
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ژورنال
عنوان ژورنال: Journal of the American Medical Association
سال: 1888
ISSN: 0002-9955
DOI: 10.1001/jama.1888.02400500013001c