Nanoclusters formed during natural aging cause the negative effect of the two-step aging in the age-hardenable Al-Mg-Si alloys. The relationship between the clustering behavior during natural aging and the two-step aging behavior was studied using the hardness, differential scanning calorimetry (DSC), electrical resistivity measurements, transmission electron microscopy (TEM) observation in the...

Aging is a time-dependent decline in physiological function that affects most organisms and the major risk factor for many non-communicable diseases. The early diagnosis of aging critical treatment aging-related In recent years, extensive efforts have attempted to accurately diagnose aging. To date, multiple types fluorescent probes various age-related biomarkers been developed, with aims achie...

Perlite or pearl stone is a natural glass which has formed by rapid cooling of viscous lava or magma. Perlite is mainly composed of silica, aluminum, potassium and sodium. In this experiment, perlite was used as a low-cost source of Si and Al to synthesis of sodalite zeolite using the alkaline hydrothermal treatment. A statistical Taguchi design of experiments was employed to evaluate the effec...

Background and Objective: Aging is a natural phenomenon which can cause changes in most organs and cells. Numerous mechanisms including oxidative stress and free radical generation is involved in the progression of the aging process. Pomegranate seed oil (PSO), has different therapeutic properties including anti-oxidant and anti-inflammatory effects. In this research, the effect of PSO against ...

Objectives: Composite surface sealants were introduced aiming to prevent or decrease the discoloration and microleakage of composite restorations. This study sought to assess the effect of aging on discoloration of two composite surface sealants. Methods: In this experimental study, 24 samples were fabricated of Fortify Plus and BisCover LV composite surface sealants (10mm in diameter and 1mm ...

The lenses with which we view aging are formed by many things: the maturing of gerontology as a discipline, the development of our theoretical and methodological tools for examining age and aging, and population aging itself. ‘‘Healthy aging’’ has become one of those lenses. For many years our attention has been drawn to the frailties associated with aging as we attempt to alleviate the sufferi...

BACKGROUND Different clinical features of skin diseases have been addressed between aging patients and non-aging patients. However, data focusing on the clinical features of chronic urticaria (CU) in aging patients especially in the Asian population are still limited. OBJECTIVE This study aimed to investigate the clinical characteristics of CU in aging and non-aging patients in the Asian popu...

We and other studies have elucidated single molecules that can attenuate aging and extend longevity. Indeed, these molecules could prevent age-associated diseases simultaneously and probably extending healthy-life spans. In this review, we discuss recent advances, controversies, opportunities and challenges surrounding ursolic acid (UA) in relationship with aging. In this regard, UA also known ...