Aging effects of ultraviolet lights with same dominant wavelength and different wavelength ranges on a hydrocarbon-based polymer (asphalt)

2019 ◽  
Vol 75 ◽  
pp. 64-75 ◽  
Author(s):  
Yuanyuan Li ◽  
Shaopeng Wu ◽  
Quantao Liu ◽  
Jun Xie ◽  
Hechuan Li ◽  
...  
Keyword(s):  
Aging Effects ◽  
Dominant Wavelength

Effects of Aging on the Subcortical Encoding of Stop Consonants

2020 ◽  
Vol 29 (3) ◽  
pp. 391-403
Author(s):  
Dania Rishiq ◽  
Ashley Harkrider ◽  
Cary Springer ◽  
Mark Hedrick
Keyword(s):  
Older Adults ◽  
Repeated Measures ◽  
Mixed Model ◽  
Auditory Brainstem ◽  
Auditory Brainstem Responses ◽  
Aging Effects ◽  
Formant Frequency ◽  
Place Of Articulation ◽  
Second Formant ◽  
Effects Of Aging

Purpose The main purpose of this study was to evaluate aging effects on the predominantly subcortical (brainstem) encoding of the second-formant frequency transition, an essential acoustic cue for perceiving place of articulation. Method Synthetic consonant–vowel syllables varying in second-formant onset frequency (i.e., /ba/, /da/, and /ga/ stimuli) were used to elicit speech-evoked auditory brainstem responses (speech-ABRs) in 16 young adults ( M age = 21 years) and 11 older adults ( M age = 59 years). Repeated-measures mixed-model analyses of variance were performed on the latencies and amplitudes of the speech-ABR peaks. Fixed factors were phoneme (repeated measures on three levels: /b/ vs. /d/ vs. /g/) and age (two levels: young vs. older). Results Speech-ABR differences were observed between the two groups (young vs. older adults). Specifically, older listeners showed generalized amplitude reductions for onset and major peaks. Significant Phoneme × Group interactions were not observed. Conclusions Results showed aging effects in speech-ABR amplitudes that may reflect diminished subcortical encoding of consonants in older listeners. These aging effects were not phoneme dependent as observed using the statistical methods of this study.

Age Differences in Eye Movements During Reading: Degenerative Problems or Compensatory Strategy?

2019 ◽  
Vol 24 (4) ◽  
pp. 297-311
Author(s):  
José David Moreno ◽  
José A. León ◽  
Lorena A. M. Arnal ◽  
Juan Botella
Keyword(s):  
Eye Movements ◽  
Eye Movement ◽  
Meta Analysis ◽  
Age Groups ◽  
Behavioral Changes ◽  
Aging Effects ◽  
Movement Data ◽  
Sentence Reading ◽  
The Difference ◽  
Eye Movements During Reading

Abstract. We report the results of a meta-analysis of 22 experiments comparing the eye movement data obtained from young ( Mage = 21 years) and old ( Mage = 73 years) readers. The data included six eye movement measures (mean gaze duration, mean fixation duration, total sentence reading time, mean number of fixations, mean number of regressions, and mean length of progressive saccade eye movements). Estimates were obtained of the typified mean difference, d, between the age groups in all six measures. The results showed positive combined effect size estimates in favor of the young adult group (between 0.54 and 3.66 in all measures), although the difference for the mean number of fixations was not significant. Young adults make in a systematic way, shorter gazes, fewer regressions, and shorter saccadic movements during reading than older adults, and they also read faster. The meta-analysis results confirm statistically the most common patterns observed in previous research; therefore, eye movements seem to be a useful tool to measure behavioral changes due to the aging process. Moreover, these results do not allow us to discard either of the two main hypotheses assessed for explaining the observed aging effects, namely neural degenerative problems and the adoption of compensatory strategies.

Iconic memory and aging: Effects of stimulus duration, letter contrast, and cue delay

1997 ◽  
Author(s):  
Andrew S. Lajoie ◽  
David A. Frieske
Keyword(s):  
Stimulus Duration ◽  
Iconic Memory ◽  
Aging Effects

Determination of in vitro „anti-aging„-effects of Ganoderma pfeifferi

Planta Medica ◽  
2010 ◽  
Vol 76 (12) ◽  
Author(s):  
W Jülich ◽  
J Pörksen ◽  
H Welzel ◽  
U Lindequist
Keyword(s):  
Aging Effects

Summary of aging effects on 25-year old nylon parachutes

1989 ◽  
Author(s):  
EDEN TADIOS
Keyword(s):  
Aging Effects

An Open Label, Prospective, Clinical Study to Evaluatee the Anti-aging Effects and the Safety of a Novel Ccosmetic Facial Day Cream

2017 ◽  
Vol 1 ◽  
pp. s83
Author(s):  
C Granger ◽  
G Martinez-Masana ◽  
A Garre
Keyword(s):  
Clinical Study ◽  
Prospective Clinical Study ◽  
Aging Effects ◽  
Open Label

Abstract Not Available

Antioxidant and Anti-Aging Effects of Extracts from Leaves of Chamaecrista nomame (Siebold) H. Ohashi on Oxidative Stress-Induced Human Dermal Fibroblasts

2019 ◽  
Vol 48 (9) ◽  
pp. 933-942
Author(s):  
Sun-Il Choi ◽  
Jong Seok Lee ◽  
Sarah Lee ◽  
Bong-Yeon Cho ◽  
Seung-Hyun Choi ◽  
...  
Keyword(s):  
Oxidative Stress ◽  
Dermal Fibroblasts ◽  
Human Dermal Fibroblasts ◽  
Aging Effects
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