Refined sectional analysis with shear center prediction for nonhomogeneous anisotropic beams with nonuniform warping

Meccanica ◽  
2015 ◽  
Vol 51 (8) ◽  
pp. 1839-1867 ◽  
Author(s):  
Manoj Kumar Dhadwal ◽  
Sung Nam Jung
Author(s):  
S.R. Glanvill

This paper summarizes the application of ultramicrotomy as a specimen preparation technique for some of the Materials Science applications encountered over the past two years. Specimens 20 nm thick by hundreds of μm lateral dimension are readily prepared for electron beam analysis. Materials examined include metals, plastics, ceramics, superconductors, glassy carbons and semiconductors. We have obtain chemical and structural information from these materials using HRTEM, CBED, EDX and EELS analysis. This technique has enabled cross-sectional analysis of surfaces and interfaces of engineering materials and solid state electronic devices, as well as interdiffusion studies across adjacent layers.Samples are embedded in flat embedding moulds with Epon 812 epoxy resin / Methyl Nadic Anhydride mixture, using DY064 accelerator to promote the reaction. The embedded material is vacuum processed to remove trapped air bubbles, thereby improving the strength and sectioning qualities of the cured block. The resin mixture is cured at 60 °C for a period of 80 hr and left to equilibrate at room temperature.


2020 ◽  
Vol 29 (2) ◽  
pp. 206-217
Author(s):  
Jianyuan Ni ◽  
Monica L. Bellon-Harn ◽  
Jiang Zhang ◽  
Yueqing Li ◽  
Vinaya Manchaiah

Objective The objective of the study was to examine specific patterns of Twitter usage using common reference to tinnitus. Method The study used cross-sectional analysis of data generated from Twitter data. Twitter content, language, reach, users, accounts, temporal trends, and social networks were examined. Results Around 70,000 tweets were identified and analyzed from May to October 2018. Of the 100 most active Twitter accounts, organizations owned 52%, individuals owned 44%, and 4% of the accounts were unknown. Commercial/for-profit and nonprofit organizations were the most common organization account owners (i.e., 26% and 16%, respectively). Seven unique tweets were identified with a reach of over 400 Twitter users. The greatest reach exceeded 2,000 users. Temporal analysis identified retweet outliers (> 200 retweets per hour) that corresponded to a widely publicized event involving the response of a Twitter user to another user's joke. Content analysis indicated that Twitter is a platform that primarily functions to advocate, share personal experiences, or share information about management of tinnitus rather than to provide social support and build relationships. Conclusions Twitter accounts owned by organizations outnumbered individual accounts, and commercial/for-profit user accounts were the most frequently active organization account type. Analyses of social media use can be helpful in discovering issues of interest to the tinnitus community as well as determining which users and organizations are dominating social network conversations.


2012 ◽  
Vol 58 (4) ◽  
pp. 472-476 ◽  
Author(s):  
Caroline Filla Rosaneli ◽  
Flavia Auler ◽  
Carla Barreto Manfrinato ◽  
Claudine Filla Rosaneli ◽  
Caroline Sganzerla ◽  
...  

2017 ◽  
Vol 48 (S 01) ◽  
pp. S1-S45
Author(s):  
M. Zielonka ◽  
S. Garbade ◽  
S. Kölker ◽  
G. Hoffmann ◽  
M. Ries

2019 ◽  
Author(s):  
Patricia Clark ◽  
Annarella Barbato ◽  
Miguel Angel Guagnelli ◽  
Jose Alberto Rascon ◽  
Edgar Denova ◽  
...  

Diabetes ◽  
2020 ◽  
Vol 69 (Supplement 1) ◽  
pp. 2174-PUB
Author(s):  
NARAYANAN NK ◽  
CS DWARAKANATH ◽  
VENKATARAMAN S ◽  
MANIKANDAN RM ◽  
NARENDRA BS ◽  
...  

AIAA Journal ◽  
2002 ◽  
Vol 40 ◽  
pp. 2105-2112 ◽  
Author(s):  
W. Yu ◽  
V. Volovoi ◽  
D. H. Hodges ◽  
X. Hong

Author(s):  
B. Domengès ◽  
P. Poirier

Abstract In this study, the resistance of FIB prepared vias was characterized by the Kelvin probe technique and their physical characteristics studied using cross-sectional analysis. Two domains of resistivity were isolated in relation to the ion beam current used for the deposition of the via metal (Pt). Also submicrometer vias were investigated on 4.2 µm deep metal lines of a BiCMOS aluminum based design and a CMOS 090 copper based one. It is shown that the controlling parameter is the shape and volume of the contact, and that the contact formation is favored by the amount of over-mill of the via into the metal line it will contact.


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