Impact of Environmental Conditions on Secondary Organic Aerosol Production from Photosensitized Humic Acid.

Recent studies have shown the potential of the photosensitizer chemistry of humic acid, as a proxy for humic-like substances in atmospheric aerosols, to contribute to secondary organic aerosol mass. The mechanism requires particle-phase humic acid to absorb solar radiation and become photoexcited, then directly or indirectly oxidize a volatile organic compound (VOC), resulting in a lower volatility product in the particle phase. We performed experiments in a photochemical chamber, with aerosol-phase humic acid as the photosensitizer and limonene as the VOC.

[Old age and smoking].

Elderly people today have seen a radical change in the image of smokers over the last half century. While once it was approved, it is now demonised. Although smoking declines with age, there are still many elderly smokers.

Caregivers' representations of elders who drink too much alcohol: crossroads between professional home caregivers and hospitals nurses.

Being old or having alcohol use disorders are two unfavorable conditions for receiving help or optimal care. When these two conditions are associated, professionals are even less attracted to work with old alcoholics. To address this issue, from the professionnals perspective, two studies based on research interviews were crossed, one was conducted with 17 professional home caregivers and the other with 29 hospital nurses.

Alcoholic abstinence in elderly subjects with misuse of alcohol.

Alcohol use disorder does not disappear with aging, neither the associated induced-suffering. While the prevalence of alcohol use disorder still remains around 10% in the subjects over 65 year old age, and daily encountered by hospital or nursing-home caregivers. Alcohol misuse is often overlooked in elderly people, which then obtain lesser care than younger adults although the care prognosis remains as good as or better than before the age of 65, alcoholic abstinence gets always a place among care offers to elders suffering of alcohol use disorders and dependence.

Parental contributions and separation anxiety on adolescents' cannabis use: a preliminary study based on French high school students.

Background: Separation anxiety (SA) among adolescents remains a very rare diagnosis. According to some authors, behavioral disorders may arise from SA disorders. This study evaluated the relationship between cannabis use and family functioning among adolescent cannabis users.

[Addictive behavior among the elderly].

Addictive behavior still persists among the elderly, mainly concerning substance abuse, such as alcohol, tobacco or psychotropic drugs and addictive practices such as gambling. Illegal substances or cyber-addictions appear much less often. The environment (place of residence or care) and/or economic factors may influence behavior and practices.