The stator windings of large air-cooled rotating machines are mainly insulated with mica-glass fabric impregnated with epoxy resin. In service, these materials are submitted to thermal, mechanical and electrical stresses. A specific aging arrangement has been set-up allowing artificial thermo-oxidative aging of samples, thanks to the application of a dry O2 pressure at a controlled temperature....

In the recent decades, improved quality of life and medical technology advancement have led to extension in life expectancy. However, neurological changes are commonly observed in the aging population – they are very often associated with gradual degenerative alteration in brain function, including Alzheimer’s and Parkinson’s diseases, as well as healthy aging. Recently, an increasing number of...

The performance of asphalt pavement will deteriorate gradually due to oxidation, also named the ageing binders. In this study, research progress on multiscale evaluation aging behaviour in past decade was reviewed further analyse evolution law and determine mechanism. Firstly, artificial methods were introduced, factors affecting analysed, changes properties before after identified. Secondly, t...

Introduction: Solar radiation has a major role in design, utilization, development, and planning of solar energy. The most important source of natural ultraviolet radiation is the sun, which has an important role in many biologic processes. Some of these processes are useful, like the production of vitamin D in the body, or curing rickets, and some of them are not, such as ski...

The objective of this study was to evaluate the glossiness black alder wood (Alnus glutinosa L.) samples coated with two varnish types as a function exposure dry heat and artificial aging. chemical resistance cold liquids also evaluated. Based on findings in work, it appears that their structural differences influenced overall samples. UV exhibited higher gloss values than those water-borne pro...

ii Abstract Artificial companion agents are defined as hardware or software entities designed to provide companionship to a person. The senior population are facing a special demand for companionship. Artificial companion agents have been demonstrated to be useful in therapy, offering emotional companionship and facilitating socialization. However, there is lack of empirical studies on what the...

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...

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...

Aims Integrating bioinformatics and experimental validation to explore the mechanisms of inflammaging in Brain. Method After dividing GSE11882 dataset into aged young groups, we identified co-expressed differentially expressed genes (DEGs) different brain regions. Enrichment analysis revealed that DEGs were mainly associated with inflammatory responses. Subsequently, 12 related response used DG...

The study focuses on Alzheimer’s and dementia detection using machine learning, acknowledging their impact cognitive health beyond normal aging. Data markers, rather than biomarkers, are preferred for diagnosis, allowing learning to play a role. objective is design test model early lifestyle data from the National Health Ageing Trends Study (NHATS). This could aid in flagging high-risk individu...