نتایج جستجو برای: drills
تعداد نتایج: 1430 فیلتر نتایج به سال:
The aim of the article is to find a correlation between change in properties cooling agent and geometry chipformer, as both are reflected service life tool after deep drilling. reason for carrying out research requirement practice obtain economic efficiency production such demanding process When applying latest designs gun drills, it very important correctly set technological parameters maintai...
This study deals with noise problems associated with the use of air-turbine drills in dental practice. The sigh-speed dental drills offer an entirely new concept cavity preparation and presents by far the easiest method of cutting hard dental tissues. The use of these machines, however, cause some new problems among which is the possibility of harmful effects on the hearing sense of the...
The current study tries to test the assumption that use of meaningful drills and contextualized reading comprehension passages lead better understanding relative clauses. is based on idea meaning contexts are necessary for learning take place. It also aims empirically effect proposed by Christina Paulston acquisition A sample (30) first year undergraduate students English took part in this stud...
Aims At Farmfield Hospital, medical emergency drills are conducted monthly, as well at all other Elysium Healthcare sites. Managing emergencies is an expected component of inpatient care, though without regular practice Immediate Life Support (ILS) skills they can degrade rapidly. We propose that should be considered essential and explore how we have used them to create targeted teaching build ...
The search for present or past life in the Universe is one of the most important objectives of NASA’s exploration missions. Drills for subsurface sampling of rocks, ice and permafrost are an essential tool for astrobiology studies on other planets. Increasingly, it is recognized that drilling via a combination of rotation and hammering offers an efficient and effective rapid penetration mechani...
The aim of this study was to examine physical, physiological, and motor responses and perceived exertion during different soccer drills. In small-sided games, the individual playing area (∼ 275 m², ∼ 175 m², and ∼ 75 m²) was varied while the number of players per team was kept constant: 5 vs. 5 plus goalkeepers. Participants were ten male youth soccer players. Each session comprised three small...
Hydraulic rock drills are widely used in drilling, mining, construction, and engineering applications. They typically operate harsh environments with high humidity, large temperature differences, vibration. Under the influence of environmental noise operational patterns, distributions data collected by sensors for different operators equipment differ significantly, which leads to difficulty fau...
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