Results 51 to 60 of about 2,960,420 (225)
Shock and Vibration, 2017 Based on an optimized lunar regolith coring bit (LRCB) configuration, the load characteristics of rotary-percussive drilling of lunar rock simulant in a laboratory environment are analyzed to determine the effects of the drilling parameters (the ...
Peng Li +3 more
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Analysis on the mechanism of sound production and effects of musical flue pipe
Cognitive Computation and Systems, 2022 String instruments, wind instruments and percussion instruments are three traditional categories of musical instruments, among which wind instruments play an important role. Usually, pitches of wind instruments are determined by the vibrating air column,
Jing Jiang +4 more
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Journal of Dental Education, EarlyView.ABSTRACT Purpose/Objectives Immersive educational technologies, including applications of artificial intelligence in education (AIED), are increasingly used to develop clinical skills in health professions education. This study evaluated the feasibility and perceived value of integrating an artificial intelligence (AI)‐enabled virtual patient platform ...
Jeffrey J. Borckardt +6 more
wiley +1 more source
Designed and Testing of the Positive Displacement Motor Driven Rotary Percussion Drilling Device
Shiyou jixie, 2016 The stability and service life of common rotary percussion drilling downhole tool is influenced by poor working conditions and is far from the field requirement. In view of this,a PDM driven drill string reciprocating percussion concept has been proposed,
Ma Guangjun +2 more
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Calculation of Natural Frequencies of Retaining Walls Using the Transfer Matrix Method
Advances in Civil Engineering, 2019 The dynamic response magnitudes of retaining walls under seismic loadings, such as earthquakes, are influenced by their natural frequencies. Resonances can occur when the natural frequency of a wall is close to the loading frequency, which could result ...
Peng Xu, Guanlu Jiang
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Respiratory Physiotherapy Techniques in Neonatal Intensive Care Units: A Scoping Review. [PDF]
Physiother Res IntABSTRACT Background and Purpose Certain physiological characteristics increase the susceptibility of newborns, particularly preterm infants, to pulmonary collapse. In addition, newborns are prone to the accumulation of airway secretions, which, even in small volumes, can compromise respiratory function.
Júnior NWBS +6 more
europepmc +2 more sources
Journal of Quaternary Science, EarlyView.ABSTRACT The cave of Les Pradelles (Marillac‐le‐Franc, France) was repeatedly visited by Neandertals ~55 000 years ago and is a key site in discussions of Neandertal cannibalism. Excavations between 1967 and 1980 (Vandermeersch) and between 2001 and 2013 (Maureille/Mann) produced a rich faunal assemblage (>20 000 bones), alongside Quina Mousterian ...
Pauline Raymond +7 more
wiley +1 more source
University Percussion Ensemble, April 15, 1981
, 2019 Recorded during a live performance at Oakland Recital Hall, Western Michigan University, Kalamazoo, Michigan on April 15, 1981, 8:00 p.m., program no. 354 of the School of Music's 1980-1981 season.University Percussion Ensemble, Michael Varner, director ;
Western Michigan University. Percussion Ensemble
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University Percussion Ensemble, March 16, 1975
, 2017 Recorded during a live performance at Oakland Recital Hall, Western Michigan University, Kalamazoo, Michigan, March 16, 1975, program no. 188 of the Department of Music’s 1974-1975 season.University Percussion Ensemble, Don Baker, director ; Terry Turner,
Western Michigan University. Percussion Ensemble
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Structural Design and Motion Behavior Analysis of Composite Percussion Drilling Tool
Shiyou jixie, 2019 The high strength, poor drillability and strong breaking-resistance of deep complex hard formation rocks often result in stick-slip vibration and premature wear of the PDC bit.
Wang Wei +4 more
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