STUDY DESIGN Biomechanical study. OBJECTIVE To evaluate the cervical facet loading profile of an intervertebral cervical disc prosthesis incorporating a unique saddle-shaped articulation and to determine the effect of implantation of the prosthesis on both the loading curve and area distribution of facet loading, when compared with that of an intact specimen. SUMMARY OF BACKGROUND DATA This...

Pin-On-Disc is a tool used to test material's friction and wear levels. This also one of the tribometer components. Pin-on-Disc uses ball-shaped pin disk ST 60 wrought iron as disc in this test. aims see or determine volume produced by pins with SAE40 SAE140 lubricants importance without lubrication. Lubrication influences material specimen In test, they are using simple Tribometer. The results...

The dynamic tensile failure of rock is a main mode in deep underground engineering projects. microscopic mechanism analysis this plays key role disaster warning. Moment tensor inversion very well-known method used to analyze mechanisms. However, an acoustic emission (AE) event cannot be accurately distinguished experiments at the laboratory scale, because there are hundreds AE events generated ...

a new species of cassiduloid echinoids, pygaulus baghinensis is reported for the first time from aptian sediments of baghin area, west of kerman, iran. the diagnostic features of the species are centrally positioned of the apical disc and approximately low profile of the test. variation in gonopore size in different individuals allows to conclude that p. baghinensis is sexually dimorphic. speci...

A new species of cassiduloid echinoids, Pygaulus baghinensis is reported for the first time from Aptian sediments of Baghin area, west of Kerman, Iran. The diagnostic features of the species are centrally positioned of the apical disc and approximately low profile of the test. Variation in gonopore size in different individuals allows to conclude that P. baghinensis is sexually dimorphic. Speci...

Small samples of rock, like those used in laboratory collision experiments, are known to be much stronger than bodies that are meters to hundreds of meters in size [1]. Specifically, the impactor energy per unit target mass needed to shatter the target decreases dramatically with increasing target size. This occurs because the strength of rock, like many other geological materials, depends stro...

a new species of cassiduloid echinoids, pygaulus baghinensis is reported for the first time from aptian sediments of baghin area, west of kerman, iran. the diagnostic features of the species are centrally positioned of the apical disc and approximately low profile of the test. variation in gonopore size in different individuals allows to conclude that p. baghinensis is sexually dimorphic. speci...

Filtration of molten metals using open cell ceramic filters has proven the premises regarding improvements final product quality. The Collaborative Research Center 920 made a substantive record in developing carbon-bonded alumina ( C − Al 2 O 3 ) filters. Considering mechanical loads carried by these filters, material strength determination is necessary step to improve their performance. Brazil...