نتایج جستجو برای: haps

تعداد نتایج: 400  

Journal: :Molecules 2018
Jingzhu Liao Chanyi Li Jing Huang Wuping Liu Hongce Chen Shuangye Liao Hongyuan Chen Wen Rui

Honey-processed Astragalus is a dosage form of Radix Astragalus mixed with honey by a traditional Chinese medicine processing method which strengthens the tonic effect. Astragalus polysaccharide (APS), perform its immunomodulatory effects by relying on the tonic effect of Radix Astragalus, therefore, the improved pharmacological activity of honey-processed Astragalus polysaccharide (HAPS) might...

2011
Maureen R. Gwinn Jeneva Craig Daniel A. Axelrad Rich Cook Chris Dockins Neal Fann Robert Fegley David E. Guinnup Gloria Helfand Bryan Hubbell Sarah L. Mazur Ted Palma Roy L. Smith John Vandenberg Babasaheb Sonawane

BACKGROUND Quantifying the benefits of reducing hazardous air pollutants (HAPs, or air toxics) has been limited by gaps in toxicological data, uncertainties in extrapolating results from high-dose animal experiments to estimate human effects at lower doses, limited ambient and personal exposure monitoring data, and insufficient economic research to support valuation of the health impacts often ...

2011
Tsuyoshi Kimura Yoichi Nibe Seiichi Funamoto Masahiro Okada Tsutomu Furuzono Tsutomu Ono Hidekazu Yoshizawa Toshiya Fujisato Kwangwoo Nam Akio Kishida

Our previous research showed that poly(vinyl alcohol) (PVA) nanoparticles incorporating DNA with hydrogen bonds obtained by high hydrostatic pressurization are able to deliver DNA without any significant cytotoxicity. To enhance transfection efficiency of PVA/DNA nanoparticles, we describe a novel method to prepare PVA/DNA nanoparticles encapsulating nanoscaled hydroxyapatites (HAps) prepared b...

Journal: :Frontiers in communications and networks 2021

Augmenting ground-level communications with flying networks, such as the high-altitude platform system (HAPS), is among major innovative initiatives of next generation wireless systems (6G). Given HAPS quasi-static positioning at stratosphere, HAPS-to-ground and HAPS-to-air connectivity frameworks are expected to be prolific in terms data acquisition computing, especially given mild weather qua...

2016
Xiaoyang Liu Chao Liu Wanping Liu Xiaoping Zeng

High altitude platform station (HAPS) is a wireless repeater in the air. It can play a dominant role in observations, remote sensing and communication. The structure and composition of formation of HAPS are studied in this paper. The performance of the wireless communication link are researched. The simulation results shows that the power of receiver is proportional to the received power and th...

Journal: :IEEE journal of radio frequency identification 2023

Global navigation satellite systems (GNSSs) are essential in providing localization and services to most of the world due their superior coverage. However, high pathloss inevitable atmospheric effect, positioning performance any standalone GNSS is still poor urban areas. To enhance legacy GNSSs areas, a system, which utilizes altitude platform station (HAPS) 5G gNodeBs (gNBs), futuristic vertic...

Journal: :Environmental Health Perspectives 1997
J Tibbetts

Research The U.S. Clean Air Act designates hazardous air pollutants (HAPs) as those that " may reasonably be anticipated to be carcinogenic, mutagenic " (Clean Air Act Amendments 1990), and exhibit other adverse health effects. Effective reduction of exposures to HAPs requires determining the compounds, exposure pathways, and sources that contribute the most to human health risk. Many prior ris...

2015
Michael D Swartz Yi Cai Wenyaw Chan Elaine Symanski Laura E Mitchell Heather E Danysh Peter H Langlois Philip J Lupo

BACKGROUND While there is evidence that maternal exposure to benzene is associated with spina bifida in offspring, to our knowledge there have been no assessments to evaluate the role of multiple hazardous air pollutants (HAPs) simultaneously on the risk of this relatively common birth defect. In the current study, we evaluated the association between maternal exposure to HAPs identified by the...

Journal: :Vehicular Communications 2023

The recently accentuated features of augmenting conventional wireless networks with high altitude platform systems (HAPS) have fueled a plethora applications, which promise to offer new services ground users, as well enhance the efficiency and pervasion existing applications. Cloud-enabled HAPS, aims create HAPS-based datacenters that cloud has particularly emerged promising key enabler provide...

2003
David Lewandowski

he Clean Air Act (CAA) Amendments of 1990 are inT tended to reduce emissions of volatile organic compounds (VOCs) by 70 to 90%. They specifically designate 189 compounds as hazardous air pollutants (HAPs). The EPA estimates that the aerospace industry generates 208,000 tons per year of HAPs plus an additional 145,000 tons per year of VOCs. Maximum Achievable Control Technology (MACT) standards ...

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