نتایج جستجو برای: impact zone length

تعداد نتایج: 1152267  

2014
P. Sankara Rao

Abstract-In FZP’S Spatial resolution and focusing efficiency play very important role for getting good results. There is dependency between resolution and FZP diameter. So I described analytical estimations on radius, diameter etc. This paper presents the dependency of focusing efficiency on (1 order diffraction wave) on number of zone plates, dependency of focusing efficiency on interlayer dis...

2011
Ling Cheng Cody Locke Graeme W. Davis

The dimensions of neuronal dendrites, axons, and synaptic terminals are reproducibly specified for each neuron type, yet it remains unknown how these structures acquire their precise dimensions of length and diameter. Similarly, it remains unknown how active zone number and synaptic strength are specified relative the precise dimensions of presynaptic boutons. In this paper, we demonstrate that...

Journal: :Engineering Fracture Mechanics 2022

The influence of the cohesive zone length on crack driving force is quantified and analyzed in a representative system particles dispersed matrix composite material. For heterogeneous material systems, e.g. particulate composites, it known that as approaches particles, may increase (shielding) or decrease (anti-shielding) depending relative stiffness particles. These results have been establish...

2015
Hongjun Zhu Yuanhua Lin Dezhi Zeng Ying Zhou Juan Xie

Perforation in internal upset transition zone is one of the main failure styles for drill pipes. Due to the flow channel specificity of upset transition zone, in this paper, drill pipe failure analysis from the point of flow erosion was put forward. Flow field of drilling fluid in the internal upset transition zone of U127 mm API IEU S135 drill pipe under various conditions were obtained using ...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه پیام نور - دانشگاه پیام نور استان تهران - دانشکده علوم 1392

واحدهای سنگی کرتاسه بالایی تا پالئوژن زیرین در استان خراسان جنوبی (شرق لوت) گسترش دارند. در این مطالعه پنج برش چینه شناسی سیلک، آرک شمالی، بین آباد، آرک جنوبی و کبوده به منظور ارائه مدل رسوبی نمونه برداری و مورد بررسی قرار گرفتند. در مجموع 26 رخساره در تمام برش ها شناسایی گردید که در جایگاه های مختلف یک پلتفرم کربناته از نوع رمپ از مناطق ساحلی تا رمپ خارجی نهشته شده اند. علاوه بر این برای برش ه...

Journal: :JACC: Cardiovascular Interventions 2018

Journal: :Uluslararası Muhendislik Arastirma ve Gelistirme Dergisi 2021

2007
David R. Butler DAVID R. BUTLER

Snow avalanche paths are major geomorphic features in the Rocky Mountains of Glacier National Park, Montana. They are the most common and geographically widespread form of mass-wasting in the central portion of the park. Field work and aerialphoto studies identified over 800 such paths in the study area. Other mass-wasting phenomena are also common. Snow avalanche path directions in the study a...

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