Results 11 to 20 of about 206,852 (306)

Relating hygroscopicity and composition of organic aerosol particulate matter [PDF]

open access: yes, 2010
A hygroscopicity tandem differential mobility analyzer (HTDMA) was used to measure the water uptake (hygroscopicity) of secondary organic aerosol (SOA) formed during the chemical and photochemical oxidation of several organic precursors in a smog chamber.
Aiken, Allison C.   +16 more
core   +5 more sources

Influence of Algal Production and Decomposition on the Carbon Isotope Signature of Labile Particulate Organic Matter on a Productive Continental Shelf Under the Stress of Coastal Hypoxia

open access: yesFrontiers in Marine Science, 2020
To better understand the sources and recycling of labile organic matter in coastal water, we studied the carbon isotope signature of particulate organic carbon (POC) and particulate amino acids, a major group of labile organic compounds, on the shelf of ...
Zixiang Yang   +8 more
doaj   +1 more source

Sources and Distribution of Organic Matter in Coastal Area of Muang Chonburi District, Eastern Thailand: Using Carbon and Nitrogen Stable Isotopes

open access: yesEnvironment and Natural Resources Journal, 2022
The sources and spatial distribution of organic matter were investigated in the nearshore area receiving untreated urban wastewater and offshore areas containing bivalve mariculture in Muang Chonburi District.
Namthip Boonkwang, Thanomsak Boonphakdee
doaj   +1 more source

Carbon and nitrogen stocks in a Rhodic Nitisol under different tillage methods and mineral and organic fertilizers [PDF]

open access: yesRevista Brasileira de Ciência do Solo, 2023
Changes in soil management, for example by more vigorous crops, adoption of conservation tillage and optimization of fertilization, can increase soil organic carbon (SOC) and total nitrogen (TN) stocks.
Camila Rosana Wuaden   +4 more
doaj   +1 more source

Tiny is mighty: seagrass beds have a large role in the export of organic material in the tropical coastal zone. [PDF]

open access: yesPLoS ONE, 2014
Ecosystems in the tropical coastal zone exchange particulate organic matter (POM) with adjacent systems, but differences in this function among ecosystems remain poorly quantified.
Lucy G Gillis   +6 more
doaj   +1 more source

Plant-Bacteria Interactions for the Elimination of Atmospheric Contaminants in Cities

open access: yesAgronomy, 2021
One of the major health risks for humans, especially for those living in large cities, is air pollution. Air pollution consists mainly of emissions of particulate matter (PM), nitrogen oxides, sulphur dioxide, ammonia and volatile organic compounds (VOCs)
Lázaro Molina   +3 more
doaj   +1 more source

Organic carbon transport and C/N ratio variations in a large tropical river: Godavari as a case study, India [PDF]

open access: yes, 2005
This study gives an insight into the source of organic carbon and nitrogen in the Godavari river and its tributaries, the yield of organic carbon from the catchment, seasonal variability in their concentration and the ultimate flux of organic and ...
Balakrishna, Keshava, Probst, Jean-Luc
core   +2 more sources

Assessment of Soil Aggradation through Soil Aggregation and Particulate Organic Matter by Riparian Switchgrass Buffers

open access: yesAgronomy, 2017
The restoration of riparian zones has been an important issue in many regions for the recovery of ecosystem functions. The objective of this study was to assess soil aggradation in a 7-year established riparian switchgrass buffer (SGB) and in a non ...
Carmen O. Márquez   +3 more
doaj   +1 more source

Organic atmospheric particulate material [PDF]

open access: yes, 2003
Carbonaceous compounds comprise a substantial fraction of atmospheric particulate matter (PM). Particulate organic material can be emitted directly into the atmosphere or formed in the atmosphere when the oxidation products of certain volatile organic ...
Pankow, John F., Seinfeld, John H.
core   +1 more source

Chemical Coupling Between Atmospheric Ozone and Particulate Matter [PDF]

open access: yes, 1997
A major fraction of ambient particulate matter arises from atmospheric gas-to-particle conversion. Attempts to reduce particulate matter levels require control of the same organic and nitrogen oxide (NO_x) emissions that are precursors to urban and ...
Dabdub, D., Meng, Z., Seinfeld, J. H.
core   +1 more source

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