Differentiability breaking and Schwarz theorem violation in an aging material

2002 ◽  
Vol 66 (2) ◽  
Author(s):  
P. Doussineau ◽  
A. L. Levelut
Keyword(s):  
Aging Material

Modeling Viscoelastic Properties of Aging Material

2018 ◽  
Vol 4 (4) ◽  
pp. 181-190
Author(s):  
Yuriy E. Yakubovskiy ◽  
Vasiliy I. Kolosov ◽  
Irina A. Donkova ◽  
Sergey O. Kruglov
Keyword(s):  
Viscoelastic Properties ◽  
Aging Material

scholarly journals ACCIDENTS OF THE BRIDGE STRUCTURES AND THEIR REASONS

2019 ◽  
pp. 289-294 ◽  
Author(s):  
S.A. Dergunov ◽  
A.B. Satyukov ◽  
A.Y. Spirina ◽  
S.V.Serikov
Keyword(s):  
Adverse Effects ◽  
Operational Environment ◽  
Aging Material ◽  
Supporting Structure ◽  
Bridge Structures

Examples of the destruction of bridge structures caused by overloading of the supporting structure, the appearance of aging material and the adverse effects of the operational environment are considered.

scholarly journals UJI AKTIFITAS TABIR SURYA NANO-TITANIUM OKSIDA UNTUK MENDUKUNG FORMULA KOSMETIK ANTIAGING KHUSUS MENGHAMBAT PENUAAN AKIBAT SINAR MATAHARI

2019 ◽  
Vol 2 (2) ◽  
pp. 19
Author(s):  
Titik Taufikurohmah
Keyword(s):  
Titanium Oxide ◽  
Uv Light ◽  
Dominant Effect ◽  
Aging Material ◽  
Strong Energy ◽  
Fast Condition ◽  
Cosmetic Formulation ◽  
Uv Visible ◽  
The Impact ◽  
Sun Light

Aging one of problems in social healthy especially in cosmetics community. UV-protection material was important because photo-aging give dominant effect at aging process. The development anti-aging material need exploration sunscreen material too. Utilization of Titanium Oxide in cosmetic formulation have been done. In this research Titanium Oxide was develop to form Nano-Titanium Oxide. It was important to get data that Nano-Titanium Oxide still have sunscreen activity. Spot, wrinkle and decrease of skin moisture were fast condition of aging if face skin get so many sun light especially UV-light with strong energy. In this research used nanomaterial of Titanium Oxide because nanomaterial give so many advantages. The method that used was measure UV absorption this material with UV-visible spectrophotometer instrument. The result of nanomaterial Titanium Oxide that still had sunscreen activity than support anti-aging in cosmetics formulation especially inhibit photo-aging. The impact of this research was the potential using of nanomaterial Titanium Oxide increase as anti-aging material that low level of cost in the future.

scholarly journals COMPARATIVE ANALYSIS OF THE FACE AND NECK SKIN ELASTICITY IN 20-30 YEARS WOMEN

2017 ◽  
Vol 20 (4) ◽  
pp. 252-256
Author(s):  
Tatiyana N. Korolkova ◽  
L. L Ambartsumyan ◽  
I. A Shepilova ◽  
A. V Maslova
Keyword(s):  
Comparative Analysis ◽  
Skin Aging ◽  
Main Direction ◽  
Skin Elasticity ◽  
Facial Skin ◽  
Initial State ◽  
Aging Material ◽  
The Third ◽  
Comparison Groups ◽  
The Face

Prevention and correction of external signs of the face and neck aging are the main direction of modern cosmetology. The study of the skin functions of various zones of face and neck will allow to carry out more effectively cosmetic effects. The aim is to study the features of the elasticity of facial skin (forehead, skin around the eyes, cheeks) and neck in patients without external signs of skin aging. Material and methods. Elasticity of the face and neck skin was determined in 63 women aged 20-30 years, who made up four comparison groups: in the 1st group (22 women) the elasticity of the forehead skin was studied, in the 2nd group (43 women) - around eye, in the third group (49 women) - cheeks, in the 4th group (24 women) - the neck. To measure the elasticity of the skin the Cutometer MPA 580 (“Courage Khazaka”, Germany) was used. Results. The comparative analysis was performed with the forehead skin. The skin around the eyes was 61-68% more stretchy (R0, R8), 65% worse returned to the initial state (R1), including 26-62% with repeated suction cycles sensor (R3, R4, R9), by 1-11% less elastic (R2, R5, R7), by elastic-viscous properties (R6) is 26% better, but overall its elasticity is lower by 35-53% (F0, F1). The cheek skin is 91- 104% more stretchy (R0, R8), worse returns to the initial state (R1) by 22%, including by 10-82% with repeated suction cycles by the sensor (R3, R4, R9),13% more elastic (R2) and 15% less elastic (R5, R7), the elastic-viscous properties (R6) 41% better, but overall its elasticity is lower by 31-100% (F0, F1) . The neck skin is 186-257% more stretchable (R0, R8), 6% worse returns to the initial state (R1), including 13-164% with repeated suction cycles by the sensor (R3, R4, R9), by 11-28% more elastic (R2, R5, R7), by elastic-viscous properties (R6) 50% better, but overall its elasticity is lower by 88-153% (F0, F1). Conclusion. The skin of the forehead, around the eyes, cheeks and neck, according to the elasticity indices, has significant differences. The obtained data should be taken into account when carrying out various cosmetology techniques, further study are needed.

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