Search Results
Irodalom 1. Abe , O. , Yamasue , H. , Aoki , S. , Suga , M. , Yamada , H. , Kasai , K. , Masutani , Y. , Kato , N. , Kato , N. , Ohtomo , K. ( 2008 ): Aging
. M. Apostolou 2009 Parent-offspring conflict over the age of prospective spouses Social Behavior and Personality 37 1305 1306
Abstract
Thermoanalytical investigations TGA/DTG/DSC of polyamide–imide enamel after thermal ageing have been presented. The lifetimes at 260, 270, 280, 290, 300 °C were determined. The thermograms of the enamels after attaining of their lifetimes much depend on the ageing temperature. The temperatures of 5% loss of mass that much increase after thermal ageing appear the most sensitive indicator of ageing rate. The residue of mass at 800 °C increases after ageing, even to 27%, due to diffusion of copper ions from the conductor into enamel during annealing. The copper contents in aged coatings could be also an indicator of ageing rate.
]. Biological ageing is associated with a progressive decrease in cardiac myositis as a result of age-related cardiac diseases [ 27 ]. There is evidence that indicates cardiomyocytes are able to regenerate in the human heart, but this process seems to be very
Natural and artificial ageing of an alkyd based wood finish
Calorimetric investigations
Abstract
Wood protection in exterior use is generally achieved with a stain. This protective product is often obtained from an alkyd resin. A natural and artificial agening have been studied by measuring the glass transition temperature (T g) of the finish variations in terms of time. In both ageings, theT g variations are the same; there is an increase inT g during the first steps of ageing and then a stabilization. A behaviour equation is proposed and is perfectly suitable to both ageings. Time constants are calculated. This equation shows that the artificial ageing machine chosen is a good means of artificial ageing. It allows the reproduction and the acceleration by 10 times of phenomena which are observed during the natural ageing.
Summary Thermal analysis is an interesting technique to determine kinetic parameters of separate components, and also of a complete system to receive adequate information on the ageing process of pyrotechnic compositions. The investigated tracer is a tracking tracer of a Swiss missile. It is attached to a missile and produces during burning a red flame. The missile system is already in use for 15 years. Periodic inspections of the system take place every three years. These inspections, however only give information on the actual state of the tracer and not on the future state. The aim of this investigation is to predict the ageing behaviour of the tracer system to give additional information about the future use of the missile system. After two ageing profiles the tracer systems were tested on the test range at Armasuisse in Thun. The results of the testing show that an ageing period of 4 weeks at 60°C gives no changes in performance (light output and burning time). On the other side also a quite heavy ageing period of 4 weeks at 150°C was applied on tracer systems, which gives a dramatically change in burning time. The light output was even higher after this ageing profile, although the intensity changes a lot.
Zarbin, M. A.: Current concepts in the pathogenesis of age-related macular degeneration. Arch. Ophthalmol., 2004, 122 , 598–614. Zarbin M. A
Az információfeldolgozás korai szakaszának lassulása időskorban: Visszaható maszkolás és integráció
Age-related slowing of early visual information processing: Backward masking and integration
Irodalom Atchley , P. , & Hoffman , L. ( 2004 ). Aging and visual masking: Sensory and attentional factors . Psychology and Aging , 19 , 57 – 67
al.: ABCC9/SUR2 in the brain: Implications for hippocampal sclerosis of aging and a potential therapeutic target. Ageing Res. Rev., 2015, 24 (Pt B), 111–125. 21
Az idősödés során jellemző genetikai és epigenetikai változások és a gammopátiák progressziója •
A myeloma multiplex az öregedés egyik arca lehet?
Age-related genetic and epigenetic changes and the progression of gammopathies?
, a quintessential malignant disease of aging: a geroscience perspective on pathogenesis and treatment . Geroscience 2022 : 1–20 . Epub 2022/12/13 . https://doi.org/10.1007/s11357-022-00698-x . PubMed PMID: 36508077; PubMed Central PMCID: PMCPMC
