نتایج جستجو برای: stair type model

تعداد نتایج: 3238132  

پایان نامه :وزارت علوم، تحقیقات و فناوری - پژوهشگاه دانشهای بنیادی (مرکز تحقیقات فیزیک نظری و - پژوهشکده علوم نانو 1392

among the low–dimensional allotropes of carbon, nanotubes and graphene have attracted very much attention from nano–science and nanotechnology specialists. they have been proposed as building blocks in nanometer device engineering. however, these structures are not defect–free. in this thesis, we focused on defective carbon nanotubes and graphene, and studied the effect of couple of very common...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه تربیت مدرس - پژوهشکده مهندسی فرایند 1395

abstract: mineral scaling in oil and gas production equipment is one of the most important problem that occurs while water injection and it has been recognized to be a major operational problem. the incompatibility between injected and formation waters may result in inorganic scale precipitation in the equipment and reservoir and then reduction of oil production rate and water injection rate. ...

Journal: :American journal of preventive medicine 2012
Karen K Lee Ashley S Perry Sarah A Wolf Reena Agarwal Randi Rosenblum Sean Fischer Victoria E Grimshaw Richard E Wener Lynn D Silver

BACKGROUND Although studies have demonstrated that stair prompts are associated with increased physical activity, many were conducted in low-rise buildings over a period of weeks and did not differentiate between stair climbing and descent. PURPOSE This study evaluated the impact of a prompt across different building types, and on stair climbing versus descent over several months. METHODS I...

Journal: :Gait & posture 2012
Michelle Hall Catherine A Stevermer Jason C Gillette

Individuals with anterior cruciate ligament (ACL) reconstruction are at increased risk to develop knee osteoarthritis (OA). Gait analysis describing kinetics of the lower extremity during walking and stair use (stair ascent and stair descent) can provide insight to everyday dynamic knee joint loading. In this study, we compared lower extremity gait patterns of those with ACL reconstruction (>1 ...

Journal: :international journal of advanced design and manufacturing technology 0
sreedhar pugalendhi advanced research school for technology and product simulation. (arstps), central institute of plastic engineering and technology, chennai-32, india

fused deposition modeling (fdm) is a filament based rapid prototyping system provides us to manufacture real parts with multiple production-grade materials, such as abs-m30, pc, ppsf and pc-abs blend. fused deposition modeling technology, essentially perform using layer manufacturing process. more complex 3d physical models can be efficiently fabricated without geometric limitation by this tech...

Journal: :Health education research 2002
A L Marshall A E Bauman C Patch J Wilson J Chen

This study aimed to evaluate whether a stair-promoting signed intervention could increase the use of the stairs over the elevator in a health-care facility. A time-series design was conducted over 12 weeks. Data were collected before, during and after displaying a signed intervention during weeks 4-5 and 8-9. Evaluation included anonymous counts recorded by an objective unobtrusive motion-sensi...

2015
Nikolaos Papanikolopoulos

Robots are used to climb the stairs for different applications up to now, but the. To overcome this, we have developed an adjustable stair climbing robot to climb.feedback control system for an RF remote-controlled stairclimbing robot. Enter the password to open this PDF file: Cancel OK. File name.which has the capability to climb the stairs easily. Stair climbing is one of the most attractive ...

2012
Max Paquette Songning Zhang

INTRODUCTION The challenging nature and high incidence of trips and falls in the elderly during stair negotiation has led to numerous research studies investigating lower extremity biomechanics in older adults [1]. Stair descent has been shown to yield greater impact peak ground reaction force (GRF), and greater peak knee internal abduction moment compared to stair ascent and level-walking [2,3...

Journal: :Journal of biomechanics 2012
Srikant Vallabhajosula Jennifer M Yentes Nicholas Stergiou

Ascending stairs is a challenging activity of daily living for many populations. Frontal plane joint dynamics are critical to understand the mechanisms involved in stair ascension as they contribute to both propulsion and medio-lateral stability. However, previous research is limited to understanding these dynamics while initiating stair ascent from a stand. We investigated if initiating stair ...

Journal: :Gait & posture 2008
N D Reeves M Spanjaard A A Mohagheghi V Baltzopoulos C N Maganaris

The high incidence of falls in older adults during stair negotiation suggests that this task is physically challenging and potentially dangerous. The present study aimed to examine the influence of light handrail use on the biomechanics of stair negotiation in old age. Thirteen older adults ascended and descended a purpose-built staircase at their self-selected speed: (i) unaided and (ii) with ...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید