Brain activity is complex; a reflection of its structural and functional organization. Among other measures of complexity, the fractal dimension is emerging as being sensitive to neuronal damage secondary to neurological and psychiatric diseases. Here, we calculated Higuchi's fractal dimension (HFD) in resting-state eyes-closed electroencephalography (EEG) recordings from 41 healthy controls (a...

Specific point mutations in lamin A gene have been shown to accelerate aging in humans and mice. Particularly, a de novo mutation at G608G position impairs lamin A processing to produce the mutant protein progerin, which causes the Hutchinson Gilford progeria syndrome. The premature aging phenotype of Hutchinson Gilford progeria syndrome is largely recapitulated in mice deficient for the lamin ...

Copper wires are increasingly used in place of gold wires for making bonded interconnections in microelectronics. There are many potential benefits for use of copper in these applications, including better electrical and mechanical properties, and lower cost. Usually, wires are bonded to aluminum contact pads. However, the growth of Cu/Al intermetallic compounds (IMC) at the wire/pad interfaces...

Abstract Key message Environmental stress resulting from rapid climate changes leads to the initiation of seed aging process in mitochondria and peroxisomes. Seed storage methods limiting germinability loss are fundamental for forest future. is a natural process. It decreases germination rate, i.e. essential plant’s life cycle. Aging involves progressive accumulation oxidative damage over time....

an experiment was conducted to determine the aging mechanism in safflower seed using natural aging treatment (storing seed at room temperature for six years) and accelerated aging ( incubating the seed at 41?c and close to 100% relative humidity for 4 ,8 and 12 days). the results indicated that both natural and accelerated aging reduced germination percentage, seed vigor and activity of catalas...

background: aging contains morphological and functional deterioration in biological systems. d-galactose (d-gal) generates free radicals and accelerates aging. portulaca oleracea (purslane) may have protective effect against oxidative stress. objective: purslane ethanolic extract effects were evaluated on antioxidant indices and sex hormone in d-gal aging female mice. materials and methods: 48 ...

Henan Province has a large population in China. According to international standards, the province already entered an aging society and is close entering deep society. It expected that total elderly will continue increase rapidly next few decades. Starting from current situation urban-rural distribution of Province, this paper analyzes aspects national ranking population, age composition reside...

The surface discharge of silicone rubber (SIR) is one the main reasons to accelerate aging its material in power systems. It known that static water droplets on SIR can make flashover voltage substantially fall, while characteristics impacting are unknown. In this work, dynamic studied. When impact surface, they will stretch first and then shrink. minimum occurs at moment when spreading area dr...

It is well known that blood testosterone level declines during the course of male aging (Feldman et al., 2002; Harman et al., 2001), a phenomena that is associated with the decreases in bone density, muscle mass and strength, sexual function and other physiological parameters (Kaufman & Vermeulen, 2005; Matsumoto, 2002; Vermeulen, 2000). Previous studies reported that serum testosterone concent...