Results 51 to 60 of about 3,366,577 (173)
Corrected head position. [PDF]
, 2008 Background: Historically, many reference lines and planes of the human skull have been used in an attempt to depict the head in a natural head position (NHP) which is a relaxed/balanced position when looking ahead at their eye level.
Barbera, Andrew Lawrence
core
Advances in Materials Science and Engineering, 2019 In this study, an ultrahigh drop hammer impact test system was adopted for multiple horizontal impact tests on stainless steel-reinforced concrete columns and ordinary-reinforced concrete columns with the same longitudinal reinforcement diameter.
Bo Wu, Shixiang Xu, Guoxue Zhang
doaj +1 more source
Forces Affecting Timber Skidding
Croatian Journal of Forest Engineering, 2009 The research was carried out on the strip road where longitudinal slopes were determined by the leveling method as well as individual distances of the strip road of uniform slope.
Željko Tomašić +3 more
doaj
Shaking table tests on immersed tunnel-joint-soil
Yantu gongcheng xuebao, 2018 To obtain the dynamic response of the immersed tunnel and its joints under seismic action, with Zhoutouzui immersed tunnel project in China as the background, a series of shaking table tests on immersed tunnel-joint-soil with a scaling factor of 1/60 are
CHEN Hong-juan 1, YAN Wei-ming 2, CHEN Shi-cai 2, ZHANG Xue-ming 2
doaj +1 more source
The Impact of Design Parameters of a Horizontal Wood Splitter on Splitting Force
Drvna Industrija, 2015 The article deals with the influence of the shape of the splitting wedge on the size and course of splitting force. Today maximum effort is made to search for and use of energy saving solutions in every industry.
Ján Kováč +3 more
doaj +1 more source
Modelling of Downhill Timber Skidding: Bigger Load – Bigger Slope
Croatian Journal of Forest Engineering, 2016 Skidder mobility during timber extraction is defined by: 1) basic dimensional features of the vehicle, 2) ability to overcome obstacles during movement, 3) traction performance and 4) environmental soundness.
Andreja Đuka +3 more
doaj
Observer-Based Control of Hummingbird Robot Trajectories
MachinesThis paper presents an observer-based strategy for controlling the horizontal trajectories of a hummingbird robot from on-board inertial measurements (MEMS).
Yousef Farid, André Preumont
doaj +1 more source
Physical Review Accelerators and Beams, 2016 The generation of ultrashort electron bunches with ultrasmall bunch arrival-time jitter is of vital importance for laser-plasma wakefield acceleration with external injection.
J. Zhu +4 more
doaj +1 more source
Stability Analysis of the Longitudinal Slope Linear Shield Tunnel Excavation Face
Applied SciencesIn shield tunnel engineering, longitudinal slopes and other complex alignments are commonly encountered. Given the uneven stress distribution in the soil ahead of the tunnel face during excavation, studying and understanding the instability mechanisms of
Mengxi Zhang, Shengwei Gu
doaj +1 more source
, 2014 The quarterly newsletter, The Ninth Flyer, published by the Ninth Air Force Association, Inc.
9th Air Force Association
core +1 more source