Realization of a Simple Mechanism to Simulate Core Subassembly Growth of FBR

2021 ◽  
pp. 345-351
Author(s):  
Sudheer Patri ◽  
Muhammad Sabih ◽  
S. Krishnakumar ◽  
C. Meikandamurthy ◽  
S. Chandramouli ◽  
...  
Keyword(s):  
Simple Mechanism

The Coming of the Drawloom: A Chapter in the Technological Transmission between Iran and India

2021 ◽  
Vol 8 (1) ◽  
pp. 33-46
Author(s):  
Ishrat Alam
Keyword(s):  
Thirteenth Century ◽  
History Of Technology ◽  
Textile Production ◽  
Important Place ◽  
Simple Mechanism ◽  
History Of ◽  
Complex Forms ◽  
Technological Transmission ◽  
Made In

In the history of technology, the loom has come to occupy an important place. While the horizontal handloom has a comparatively simple mechanism, this is not true of the vertical drawloom, which through centuries has developed complex forms. The question of the latter’s presence in India in early times has aroused some controversy. The case is made in this article that it arrived in the thirteenth century from Iran but failed to supplant the handloom in most areas of textile production, except for carpet weaving, mainly in Kashmir.

scholarly journals Microtubules grow by the addition of bent guanosine triphosphate tubulin to the tips of curved protofilaments

2018 ◽  
Vol 217 (8) ◽  
pp. 2691-2708 ◽  
Author(s):  
J. Richard McIntosh ◽  
Eileen O’Toole ◽  
Garry Morgan ◽  
Jotham Austin ◽  
Evgeniy Ulyanov ◽  
...  
Keyword(s):  
High Pressure ◽  
Brownian Dynamics ◽  
Electron Tomography ◽  
Tubulin Polymerization ◽  
Guanosine Triphosphate ◽  
Simple Mechanism ◽  
In Cells

We used electron tomography to examine microtubules (MTs) growing from pure tubulin in vitro as well as two classes of MTs growing in cells from six species. The tips of all these growing MTs display bent protofilaments (PFs) that curve away from the MT axis, in contrast with previously reported MTs growing in vitro whose tips are either blunt or sheetlike. Neither high pressure nor freezing is responsible for the PF curvatures we see. The curvatures of PFs on growing and shortening MTs are similar; all are most curved at their tips, suggesting that guanosine triphosphate–tubulin in solution is bent and must straighten to be incorporated into the MT wall. Variations in curvature suggest that PFs are flexible in their plane of bending but rigid to bending out of that plane. Modeling by Brownian dynamics suggests that PF straightening for MT growth can be achieved by thermal motions, providing a simple mechanism with which to understand tubulin polymerization.

Constraint Absorption and Relaxation Using a Design History

1990 ◽  
Author(s):  
Edmund J. Meehan ◽  
David C. Brown
Keyword(s):  
Expert System ◽  
Design History ◽  
Design Constraints ◽  
Limited Ability ◽  
Design Expert ◽  
Redundant Constraints ◽  
Simple Mechanism ◽  
Routine Design

Abstract A simple mechanism has been implemented and demonstrated within a routine design expert system. It has a limited ability to adjust design constraints based on experience within the domain. The mechanism is activated in response to noticing an extended run of either constraint failures or constraint successes. It reasons about the validity of either relaxing or absorbing a constraint. This process is referred to as Constraint Absorption. We hope to improve the performance of the expert system by reducing the incidence of repeated constraint failure, and by eliminating redundant constraints.

scholarly journals Simple mechanism that breaks the Hall-effect linearity at low temperatures

2020 ◽  
Vol 102 (15) ◽  
Author(s):  
A. Yu. Kuntsevich ◽  
A. V. Shupletsov ◽  
A. L. Rakhmanov
Keyword(s):  
Hall Effect ◽  
Low Temperatures ◽  
Simple Mechanism
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