Results 111 to 120 of about 1,069,531 (303)

Enhanced Ultrasound Transmission Through Aberration Layers Using Space‐Coiling Acoustic Metamaterials

open access: yesAdvanced Engineering Materials, EarlyView.
Enhancing ultrasound transmission through an aberration layer exhibiting mismatched impedance with the surrounding medium possesses great implications in imaging and treatment. In this study, we show that a space‐coiling acoustic metamaterial with judiciously tailored structural profile can help improve impedance matching.
Maral Ghanami   +4 more
wiley   +1 more source

Video Analysis of Elite American Football Athletes During Vertical Jump [PDF]

open access: yes
John L Grace, Meghan E Hancock, Madison L Malone, Bahman Adlou, Jerad J Kosek, Hannah R Houde, Christopher M Wilburn, Wendi H Weimar School of Kinesiology, Auburn University, Auburn, AL, USACorrespondence: John L Grace, School of Kinesiology, Auburn ...
Hancock ME   +7 more
core  

Segmental Limb Length And Vertical Jump Height

open access: yes, 2010
PURPOSE: To examine the role that lower extremity segmental length plays on vertical jump displacement. Previous research examining the relationship between segmental limb length and vertical jump ability revealed poor correlations.
Messick, Bryan   +5 more
core   +1 more source

Improving vertical jump: A program design [PDF]

open access: yes, 2003
The purpose of this project is to review current literature on the mechanics and physiology of the vertical jump and to provide an understanding of the jump itself.
Horton, Micheal Milo
core   +2 more sources

Investigating the Effect of Inclination Angle and the Influence of Scan Parameters on the Appearance and Thermal and Mechanical Properties of Filigree Tension Rods of LPBF‐Manufactured NiTi Shape‐Memory Alloys

open access: yesAdvanced Engineering Materials, EarlyView.
This article investigates the dependence of the properties on the manufacturing orientation in the form of the inclination angle to the build plate of LPBF‐fabricated NiTi rods with a diameter of 150–220 µm. Metallographic, chemical, thermal, and mechanical characterization show behavior under identical manufacturing conditions that ranges from ...
Sandra Herzig   +2 more
wiley   +1 more source

Consistency Problems For Jump-Diffusion Models [PDF]

open access: yes
In this paper we examine a consistency problem for a multi-factor jump diffusion model. First we bridge a gap between a jump-diffusion model and a generalized Heath-Jarrow-Morton (HJM) model, and bring a multi- factor jump-diffusion model into the HJM ...
Erhan Bayraktar   +2 more
core  

تأثير تمرينات خاصة باستخدام جهاز (vertical jump) لتطوير القوة الانفجارية وانجاز عدو 200م ناشئين

open access: yesZanco Journal of Humanity Sciences
     إنّ التقدم الحاصل في المجال الرياضي واختيار الاساليب التدريبية والاجهزة المناسبة هي من العوامل التي  تعطى لها أهمية كبرى في التدريب الرياضي الحديث، ومن هذه الاجهزة التدريبية (vertical jump) وهو جهاز يرفع من قدرة القوة الانفجارية للفرد ويزيد من قوة ...
Iman Shalaka Awad Al-Shaher   +2 more
doaj   +1 more source

Adaptive Foam 3D Printing of Ultralight and Multifunctional Materials

open access: yesAdvanced Engineering Materials, EarlyView.
Adaptive foam 3D printing, enabled by expandable microspheres, imparts cellular structures to thermoplastic and thermosetting polymers, manufactured through a variety of processes including fused filament fabrication, direct ink writing, digital light processing, and inkjet printing.
Nariman Rajabifar, Amir Ameli
wiley   +1 more source

Discrepancies Between Micro Versus Macroscale Viscoelastic Properties in a Microplastic‐Tissue Composite Model

open access: yesAdvanced Engineering Materials, EarlyView.
This study explores the discrepancies between bulk mechanics and spatial mapping in a tissue‐mimetic hydrogel model. Microplastic particles create localized stiff mechanical microenvironments that are detectable by cellular‐scale nanoindentation but leave bulk properties unchanged as measured by rheology.
Ahron T. Verschleisser   +3 more
wiley   +1 more source

نسبة مساھمة بعض القیاسات الجسمیة لاختباري الوثب العریض والعمودي من الثبات

open access: yesالرياضة المعاصرة, 2016
The physical measurements of active variables in sports as it may reach Bariyada to the best performance regardless of the skill type and no matter how difficult the shortest ways and told effort and here was the goal of research is to identify the ...
ايناس سلمان علي   +1 more
doaj  

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