The course of experimental influenza in mice maintained in high concentrations of small negative air ions

1971 ◽  
Vol 15 (1) ◽  
pp. 5-10 ◽  
Author(s):  
A. P. Krueger ◽  
S. Kotaka ◽  
E. J. Reed
Keyword(s):  
Air Ions ◽  
Negative Air Ions ◽  
High Concentrations ◽  
Experimental Influenza

scholarly journals Generating Negative Air Ions in Construction Waterscapes at a Garden Scale

Environments ◽  
2019 ◽  
Vol 6 (9) ◽  
pp. 100
Author(s):  
Chen-Fa Wu ◽  
Tien-Yi Chu ◽  
Szu-Hung Chen ◽  
Sheng-Yao Wu
Keyword(s):  
Water Body ◽  
Residential Buildings ◽  
Health Benefits ◽  
Urban Residents ◽  
Psychological Benefits ◽  
Air Ions ◽  
Negative Air Ions ◽  
Low Concentrations ◽  
High Concentrations

High concentrations of negative air ions (NAIs) and low concentrations of positive air ions (PAI), along with a low monopole coefficient (PAI/NAI), are likely to provide physiological and psychological benefits to the humans. A water body produces NAIs through the Lenard effect. This concept can be applied in designing garden waterscapes in residential buildings to provide fresh and healthy air for urban residents. In this study, we conducted several experiments to assess the effectiveness of different waterscape designs in producing air ions. The results revealed that increasing waterfall tiers, slopes, impact points, widths, and heights increased the NAI concentrations and reduced the values of monopole coefficients, thus providing health benefits to humans. In particular, increasing waterfall tiers and slopes increased the NAI concentrations most substantially. Moreover, we established a composite waterscape and determined that it produced fewer NAIs along with a less favorable monopole coefficient compared with the data observed at the experimentally adjusted tiers and slopes. Therefore, we suggest that simple waterscapes with multiple waterfall tiers or steep waterfall slopes should be favored over complex waterscapes. Such simple designs can help construct a garden that provides health benefits.

Negative air ions in neuropsychiatric disorders

2020 ◽  
Vol 27 ◽  
Author(s):  
Alessandra Della Vecchia ◽  
Federico Mucci ◽  
Andrea Pozza ◽  
Donatella Marazziti
Keyword(s):  
Cognitive Processes ◽  
Potential Effect ◽  
Review Of The Literature ◽  
Air Ions ◽  
Beneficial Effects ◽  
Positive Effects ◽  
Brain Functions ◽  
Negative Air Ions ◽  
High Concentrations ◽  
Neuropsychiatric Conditions

Background: Air ions (AIs) are clusters of ionized particles present in the atmosphere and carrying an electrical charge of negative or positive polarity. Past speculations suggested that exposure to positive air ions may be harmful, while exposure to negative air ions (NAIs) may be associated with beneficial health effects. Increasing attention has been directed towards investigating the potential effect of NAIs on human brain activities since initial observations of their beneficial effects on some cognitive processes and mood. Aims: Given the paucity and scattered literature, the aim of our paper is at reviewing available studies on potential positive effects of NAIs exposure on cognitive performances and depression. Discussion: The review of the literature seems to confirm effects of NAIs on several brain functions. Indeed, a significant association between NAIs exposure and both wellbeing and high cognitive performances has been described. However, the exposure to high concentrations of NAIs could be related to improvement of depressive symptoms. Conclusion: A growing evidence of data, although not yet conclusive, would suggest that NAIs might improve cognitive processes. These findings require specific and urgent controlled trials adopting systems based on AIs release to possible prevent and treat cognitive dysfunctions present in a broad range of neuropsychiatric conditions.

Geophysical Variables and Behavior: V. Human Performance in Ionized Air

1982 ◽  
Vol 54 (2) ◽  
pp. 403-412 ◽  
Author(s):  
Eric W. Farmer ◽  
Andrea Bendix
Keyword(s):  
Human Performance ◽  
Memory Search ◽  
Negative Ions ◽  
Air Ions ◽  
Negative Air Ions ◽  
Search Tasks ◽  
Confounding Variables ◽  
High Concentrations ◽  
Ionized Air ◽  
And Behavior

An experiment was conducted to investigate the claim that human performance may be enhanced by exposure to artificially high concentrations of negative air ions. 16 subjects, only half of whom were informed of the ion level in each session, performed reasoning, psychomotor, and memory-search tasks. Despite adequate control of confounding variables, no clear evidence was obtained in support of the view that negative ions in the air influence performance.

Progress of negative air ions in health tourism environments applications

2018 ◽  
Vol 33 (1) ◽  
pp. 27-46 ◽  
Author(s):  
FT Lazzerini ◽  
MT Orlando ◽  
W De Pra
Keyword(s):  
Air Ions ◽  
Health Tourism ◽  
Negative Air Ions

Observing Negative Air Ions Concentration in Beidaihe and Negative Air Ions’ Evaluation Standard

2012 ◽  
Vol 178-181 ◽  
pp. 747-750
Author(s):  
Yu Guo Zhuo ◽  
Jun Liu
Keyword(s):  
Health Care ◽  
Human Health ◽  
Air Ions ◽  
Evaluation Standard ◽  
Negative Air Ions ◽  
Occurrence Mechanism ◽  
The Relationship

The concept and occurrence mechanism of negative air ions (NAI) was introduced and its health care function was described. Through observing NAI concentration of six spots in Beidaihe in China, NAI evaluation standard which has seven grades is put up and the relationship between negative air ion quantity and human health is clarified clearly.

Effects of negative air ions treatment on the quality of fresh shiitake mushroom (Lentinus edodes) during storage

2021 ◽  
pp. 131200
Author(s):  
Saili Zhang ◽  
Xiangjun Fang ◽  
Weijie Wu ◽  
Chuan Tong ◽  
Hangjun Chen ◽  
...  
Keyword(s):  
Lentinus Edodes ◽  
Shiitake Mushroom ◽  
Air Ions ◽  
Negative Air Ions

Damage effects induced by electrically generated negative air ions in Caenorhabditis elegans

2008 ◽  
Vol 401 (1-3) ◽  
pp. 176-183 ◽  
Author(s):  
Kezhou Cai ◽  
Xuelan Liu ◽  
Yongjian Xu ◽  
Chong Ren ◽  
Hua Chen ◽  
...  
Keyword(s):  
Caenorhabditis Elegans ◽  
Air Ions ◽  
Negative Air Ions

scholarly journals Negative Air Ions and Their Effects on Human Health and Air Quality Improvement

2018 ◽  
Vol 19 (10) ◽  
pp. 2966 ◽  
Author(s):  
Shu-Ye Jiang ◽  
Ali Ma ◽  
Srinivasan Ramachandran
Keyword(s):  
Human Health ◽  
Indoor Air ◽  
Psychological Health ◽  
Well Being ◽  
Air Pollutant ◽  
Therapeutic Effects ◽  
Air Ions ◽  
Air Cleaning ◽  
Negative Air Ions ◽  
Air Quality Improvement

Negative air ions (NAIs) have been discovered for more than 100 years and are widely used for air cleaning. Here, we have carried out a comprehensive reviewing on the effects of NAIs on humans/animals, and microorganisms, and plant development. The presence of NAIs is credited for increasing psychological health, productivity, and overall well-being but without consistent or reliable evidence in therapeutic effects and with controversy in anti-microorganisms. Reports also showed that NAIs could help people in relieving symptoms of allergies to dust, mold spores, and other allergens. Particulate matter (PM) is a major air pollutant that affects human health. Experimental data showed that NAIs could be used to high-efficiently remove PM. Finally, we have reviewed the plant-based NAI release system under the pulsed electric field (PEF) stimulation. This is a new NAI generation system which releases a huge amount of NAIs under the PEF treatment. The system may be used to freshen indoor air and reduce PM concentration in addition to enriching oxygen content and indoor decoration at home, school, hospital, airport, and other indoor areas.

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