نتایج جستجو برای: pistoning vertical movement

تعداد نتایج: 246909  

Journal: :Applied and environmental microbiology 1990
J T Trevors J D van Elsas L S van Overbeek M E Starodub

Vertical soil microcosms flushed with groundwater were used to study the influence of water movement on survival and transport of a genetically engineered Pseudomonas fluorescens C5t strain through a loamy sand and a loam soil. Transport of cells introduced into the top 1 cm of the vertical soil microcosms was dependent on the flow rate of water and the number of times microcosms were flushed w...

Journal: :Systems and Computers in Japan 2005
Junji Watanabe Taro Maeda Susumu Tachi

When a light spot is flashed repeatedly during saccade, a dotted line called a phantom array (PA) is perceived. When light spots are placed on a vertical line and the flashing pattern is changed quickly during saccade, the flashing pattern is expanded to a spatial pattern by the effect of eye movement, and a two-dimensional image is perceived. The authors have proposed a visual information pres...

2011
John E Schlerf Richard B Ivry Helen Wills John Schlerf

32 33 Everyday movements often have multiple solutions. Many of these solutions arise from biomechanical 34 redundancies. Often, however, the goal does not require a unique movement. To examine how people 35 exploit task-related redundancy, participants produced three-dimensional reaching movements, moving 36 to one of two rectangular targets that were diagonally oriented in the frontal (X, Y) ...

2012
Michael Barnett-Cowan Tobias Meilinger Manuel Vidal Harald Teufel Heinrich H. Bülthoff

Path integration is a process in which self-motion is integrated over time to obtain an estimate of one's current position relative to a starting point (1). Humans can do path integration based exclusively on visual (2-3), auditory (4), or inertial cues (5). However, with multiple cues present, inertial cues - particularly kinaesthetic - seem to dominate (6-7). In the absence of vision, humans ...

2010
Mi-Young Song Ji-Man Park Eun-Jin Park

The severe wear of anterior teeth facilitates the loss of anterior guidance, which protects the posterior teeth from wear during excursive movement. The collapse of posterior teeth also results in the loss of normal occlusal plane and the reduction of the vertical dimension. This case report describes 77-year-old female, who had the loss of anterior guidance, the severe wear of dentition, and t...

2004
Jos Vanrenterghem

The present study was designed to investigate the determination of vertical jumping height by means of force plate measurements. Four different sources of error influence this determination: the measurement of body mass, the determination of take off, the integration frequency, and the assessment of the initial conditions influencing the determination of the start of the movement. A theoretical...

2012
Stelios G. Psycharakis

Introduction A vertical jump is a movement that is used in a plethora of sports. The primary goal of a vertical jump is normally to reach the greatest possible height. Other goals could include hitting an object such as a football or a tennis ball, intercepting the path of an object such as a basketball or volleyball etc. Because of the frequent use and the importance of the vertical jump in ma...

Journal: :international journal of advanced structural engineering 2010
rozlyn k. bubela carlos e. ventura helmut g.l prion

experimental tests were performed to study the seismic behavior and performance ofmodified steel chevron braced frame systems, which incorporate a vertical slotted connection(vsc) detail between the top of the braces and the floor beam above. the vsc detail isintended to prevent vertical load transfer to the beam and limit brace forces to thecompressive resistance of the members. full-scale qua...

Journal: :Journal of rehabilitation research and development 1990
R W Wirta F L Golbranson R Mason K Calvo

Seven different suspension systems for below-knee prostheses were tested on 20 adult, unilateral amputees. All subjects walked with a prosthesis. Gait was evaluated with regard to longitudinal and vertical accelerations of the body, forward velocity, axial (piston) movement of amputated limb in the socket, and knee movement. Harmonic analyses of variable waveforms provided the primary method to...

Journal: :dental research journal 0
mohammad reza jahanbakhshi ali mohammad kalantar motamedi masoud feizbakhsh ahmad mogharehabed

background: selective alveolar corticotomy is defined as an intentional injury to cortical bone. this technique is an effective means of accelerating orthodontic tooth movement. the aim of this study is to evaluate the effect of buccal corticotomy in accelerating maxillary canine retraction. materials and methods: the sample in this clinical trial study consisted of 15 adult female patients wit...

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