نتایج جستجو برای: aging test

تعداد نتایج: 908746  

Journal: :Microelectronics Reliability 2010
John Keane Tony Tae-Hyoung Kim Xiaofei Wang Chris H. Kim

Front-end-of-line reliability issues such as Bias Temperature Instability (BTI), Hot Carrier Injection (HCI), and Time Dependent Dielectric Breakdown (TDDB) have become more prevalent as electrical fields continue to increase in scaled devices. The rapid introduction of process improvements, such as high-k/metal gate stacks and strained silicon, has lead to new reliability issues including BTI ...

2013
Suzanne Maria D’cruz Navin Rajaratnam Pravin Kumar

Semantic verbal fluency tests are used as a measure of cognitive function to assess language and executive function. Secondary to increasing life spans, there are increasing numbers of older individuals at work places. Our study was done to assess the effect of aging on verbal fluency in South Indians. 50 controls aged 20-50 years (Group I) , 50 subjects aged 60-75 years (Group II) and 50 subje...

Journal: :Brazilian oral research 2017
Marcela Oliveira de Souza Vicente Castelo Branco Leitune Stéfani Becker Rodrigues Susana Maria Werner Samuel Fabrício Mezzomo Collares

The present study aimed to evaluate effects of different surface treatments and aging of composite cylinders on bond strength of composite resin repair. Thirty-two composite cylinders were produced and divided into four groups according to type of surface treatment and storage time of composite cylinder and repair. Cylinder surface of control group (Gcontrol) received no treatment before compos...

Journal: :Composites Part A-applied Science and Manufacturing 2022

This paper focuses on the fatigue crack growth behavior of unidirectional C/PA6 composites subjected to hydrolytic aging at temperatures ranging from 100 140 °C. The properties were determined using a multi-ΔG control test method. latter is fully automatic and allows measurement rates various ΔG levels. It was shown that highly affected by aging. Whatever temperature, rate increased about decad...

Journal: :Journal of Islamic Dental Association of Iran 2021

Background and Aim: This study evaluated the effect of hydrothermal aging on opti-cal mechanical properties opaque translucent zirconia. Materials Methods: For biaxial flexural strength (BFS) test, 40 sintered disc-shaped zirconia, for assessment surface rough-ness optical properties, 20 specimens were fabricated artificially aged in an autoclave 10 h. The CIE L*a*b* color parameters measured. ...

Eghlim, MH, Emami Arjomand , M, Jalalian, SH, Mahavi, A, Mirzakhani, ,

Background and Aim: Although the physical properties of modern glass ionomers have been extensively reported, few studies have examined how these parameters change with age. This experimental study aimed to investigate the effect of aging on the compressive strength of resin-reinforced glass ionomers. Material and Methods: Two glass ionomers (Fuji IX GP Fast, GC, Japan, and Ketac Universal, 3M,...

Journal: :journal of dentistry, tehran university of medical sciences 0
aboulfazl saboury dental research center, research institute of dental sciences of shahid beheshti university of medical sciences, tehran, iran ; associate professor, department of prosthodontics, dental school, shahid beheshti university of medical sciences, tehran, iran. seyed jalil sadr ali fayaz minoo mahshid

high variability in delivering the target torque is reported for friction-style mechanical torque limiting devices (f-s mtlds). the effect of aging (number of use) on the accuracy of these devices is not clear. the purpose of this study was to assess the effect of aging on the accuracy (±10% of the target torque) of f-s mtlds.fifteen new f-s mtlds and their appropriate drivers from three differ...

Journal: :مجله سلامت سالمندان 0
hassan rezaeipandari elderly health research center, school of public health, shahid sadoughi university of medical sciences, yazd, iran mohammad ali morowatisharifabad elderly health research center, school of public health, shahid sadoughi university of medical sciences, yazd, iran seyed jamal hashemi department of health services, school of public health, shahid sadoughi university of medical sciences, yazd, iran vali bahrevar department of health services, school of public health, shahid sadoughi university of medical sciences, yazd, iran

introduction: decrease in sleep quality is an age-related problem which appears in different features such as difficulty in sleeping, over sleeping and unusual behaviors during sleep. regarding the importance of sleep quality among older adults and also its effects on their quality of life and physical and mental status, the study was conducted to determine the status and quality of sleep in ol...

Journal: :Journal of Applied Polymer Science 2021

The purpose of this study was to investigate the influence aging on properties high-density polyethylene (HDPE) reinforced with multi-wall carbon nanotubes (MWCNTs). Nanocomposites were prepared at 0, 1, 3, and 5 wt%. long-term durability materials evaluated by thermo-oxidative test. Test bodies aged 110°C for up 10 weeks. nanocomposites characterized differential scanning calometry, thermograv...

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