نتایج جستجو برای: ambient atmosphere

تعداد نتایج: 103116  

Journal: :iranian journal of environmental sciences 0
awkash kumar centre for environmental science and engineering, indian institute of technology, bombay, mumbai-400 076, india

air pollution is one of the major threats to environment in the present time. increase in degree of urbanization is a major cause of this air pollution. due to urbanization, vehicular activities are continuously increasing at a tremendous rate. mobile or vehicular pollution is predominantly degrading the air quality worldwide. thus, air quality management is necessary for dealing with this seve...

2004
Jorge Meléndez

An extremely high-resolution (> 10) high-S/N (> 10) solar spectrum has been used to measure 15 very weak first overtone (∆v = 2) infrared OH lines, resulting in a low solar abundance of AO ≈ 8.6 when MARCS, 3D, and spatially and temporally averaged 3D model atmospheres are used. A higher abundance is obtained with Kurucz (AO ≈ 8.7) and Holweger & Müller (AO ≈ 8.8) model atmospheres. The low sol...

Journal: Pollution 2016

Air pollution is one of the major threats to environment in the present time. Increase in degree of urbanization is a major cause of this air pollution. Due to urbanization, vehicular activities are continuously increasing at a tremendous rate. Mobile or vehicular pollution is predominantly degrading the air quality worldwide. Thus, air quality management is necessary for dealing with this seve...

2009
R. Wiesinger

Air pollutants such as carbon dioxide play an important role in atmospheric corrosion processes and therefore in the degradation reactions occurring on metal surfaces exposed to an ambient atmosphere. It is known from macroscopic studies that ultraviolet (UV) light influences these surface reactions with respect to the reaction rate and the product formation itself even though the exact mechani...

2003
Seiji Sugita Peter H. Schultz

[1] The importance of interactions between impact-induced vapor clouds and an ambient atmosphere has been widely recognized, and theoretical approaches have provided significant insights. Few experiments, however, have been done to observe directly the energy partitioning during the interactions between impact vapor clouds and the ambient atmosphere. The present study attempts to understand the...

Air pollution is one of the major threats to environment in the present time. Increase in degree of urbanization is a major cause of this air pollution. Due to urbanization, vehicular activities are continuously increasing at a tremendous rate. Mobile or vehicular pollution is predominantly degrading the air quality worldwide. Thus, air quality management is necessary for dealing with this seve...

Journal: :Science and Technology of Advanced Materials 2008

Journal: :The New phytologist 2013
Andrew R Smith Martin Lukac Robin Hood John R Healey Franco Miglietta Douglas L Godbold

In a free-air carbon dioxide (CO(2)) enrichment study (BangorFACE), Alnus glutinosa, Betula pendula and Fagus sylvatica were planted in areas of one-, two- and three-species mixtures (n = 4). The trees were exposed to ambient or elevated CO(2) (580 μmol mol(-1)) for 4 yr, and aboveground growth characteristics were measured. In monoculture, the mean effect of CO(2) enrichment on aboveground woo...

Journal: :Dalton transactions 2015
Chia-Hsiang Chen Amineh Aghabali Alejandro J Metta-Magana Marilyn M Olmstead Alan L Balch Luis Echegoyen

A new flexible hexakis-fullerene adduct with two bis(pyridin-4-ylmethyl)malonate groups located at trans-1 positions was synthesized. Via reaction with Ag(PF6) under two different conditions, two new 1D coordination polymers were obtained; under a nitrogen atmosphere, the silver ions are connected by argentophilic interactions but under an ambient atmosphere, the silver ions exhibit no interact...

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