Commutant lifting techniques for computing optimal H∞ controllers

1991 ◽  
pp. 1-36 ◽  
Author(s):  
Ciprian Foias
Keyword(s):  
Commutant Lifting ◽  
Lifting Techniques

scholarly journals The Outlook of the Development of Innovative Products from Biocompatible Natural Spider Silk in the Beauty Thread-Lifting Industry

2021 ◽  
Author(s):  
Chen Qing ◽  
Qi-yan Li ◽  
Nan-nan Xue ◽  
Shi-meng Yuan ◽  
Chuan-jun Liu ◽  
...  
Keyword(s):  
Spider Silk ◽  
New Technology ◽  
Quick Recovery ◽  
Facial Beauty ◽  
Absorbable Sutures ◽  
Short Period ◽  
Innovative Products ◽  
Thread Lift ◽  
Novel Material ◽  
Lifting Techniques

Abstract Embedding thread lift rhytidectomy, also known as “thread lifting” in China, with the natures of simple operation, less trauma and quick recovery, is progressively used in clinical practice as a new technology of face lifting. Herewith, a brief introduction of the previous advances of thread lifting techniques and materials in the facial beauty industry, combined with the discussion on various types of sutures, common complications, and the site of actions were provided. The main limitations of present thread lifting material include: (1) the use of non-absorbable sutures is liable to cause allergies and a series of complications; (2) the absorbable sutures are easily degradation, and people need to reshape in a relatively short period. Therefore, the high biocompatible spider silk was proposed as a novel material of thread lifting suture and related devices, the advantages and preliminary achievements on spider silk were also addressed. Graphic Abstract

The Aging Face: A Different Perspective on Pathology and Treatment

1998 ◽  
Vol 15 (2) ◽  
pp. 167-172 ◽  
Author(s):  
Mark Berman
Keyword(s):  
Fat Grafting ◽  
Volume Correction ◽  
Brow Lift ◽  
Aging Face ◽  
Photo Damage ◽  
Lifting Techniques ◽  
Orbital Rim ◽  
Over Time

Probably because the thrust of the pathology of the aging face has been attributed to the effects of gravity (skin and muscle loosening and falling), treatment of such is generally directed toward lifting procedures. Indeed, results from such procedures are generally beneficial, but in many cases the patient appears unnaturally skeletonized. A brow-lift may eliminate some wrinkles and frown lines, but does anyone (naturally youthful) really have eyebrows a centimeter above the orbital rim? Our goal has been, and continues to be, to strive for excellence, and in the case of the aging face, this would be an improved and more youthful appearance. This paper will discuss the main pathology of the appearance of aging, which is the general dissipation of facial fat over time. It will also provide discussion as to thoughtful correction of the problem not only with lifting techniques but also with consideration to filling procedures. The judicial use of fat-grafting and various synthetic implants serve as the principal tools for volume correction. It is acknowledged that the skin undergoes photo-damage, which also contributes to the appearance of aging, but this is treated by treating the skin in a multitude of ways.

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