Chemical examination of Indian lichens

1942 ◽  
Vol 16 (2) ◽  
Author(s):  
V. V. Kumara Sastry ◽  
T. R. Seshadri
Keyword(s):  
Chemical Examination ◽  
Indian Lichens

Chemical examination of Indian lichens

1942 ◽  
Vol 16 (1) ◽  
Author(s):  
V. Subba Rao ◽  
T. R. Seshadri
Keyword(s):  
Chemical Examination ◽  
Indian Lichens

Chemical examination of Indian lichens

1942 ◽  
Vol 15 (6) ◽  
pp. 429-431 ◽  
Author(s):  
V. Subba Rao ◽  
T. R. Seshadri
Keyword(s):  
Chemical Examination ◽  
Indian Lichens

Comparative chemical examination of inclusion complexes formed with β-cyclodextrin derivatives and basis amino acids

2021 ◽  
pp. 117868
Author(s):  
D. Esmaeilpour ◽  
S. Shityakov ◽  
A.M. Tamaddon ◽  
A.K. Bordbar
Keyword(s):  
Amino Acids ◽  
Inclusion Complexes ◽  
Cyclodextrin Derivatives ◽  
Chemical Examination

scholarly journals Monitoring of compliance with fuel sulfur content regulations through unmanned aerial vehicle (UAV) measurements of ship emissions

2019 ◽  
Vol 12 (11) ◽  
pp. 6113-6124 ◽  
Author(s):  
Fan Zhou ◽  
Shengda Pan ◽  
Wei Chen ◽  
Xunpeng Ni ◽  
Bowen An
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Sulfur Content ◽  
Measurement System ◽  
Yangtze River Delta ◽  
Exhaust Gas ◽  
Ship Emissions ◽  
Chemical Examination ◽  
Airborne Measurements ◽  
Aerial Vehicle

Abstract. Air pollution from ship exhaust gas can be reduced by the establishment of emission control areas (ECAs). Efficient supervision of ship emissions is currently a major concern of maritime authorities. In this study, a measurement system for exhaust gas from ships based on an unmanned aerial vehicle (UAV) was designed and developed. Sensors were mounted on the UAV to measure the concentrations of SO2 and CO2 in order to calculate the fuel sulfur content (FSC) of ships. The Waigaoqiao port in the Yangtze River Delta, an ECA in China, was selected for monitoring compliance with FSC regulations. Unlike in situ or airborne measurements, the proposed measurement system could be used to determine the smoke plume at about 5 m from the funnel mouth of ships, thus providing a means for estimating the FSC of ships. In order to verify the accuracy of these measurements, fuel samples were collected at the same time and sent to the laboratory for chemical examination, and these two types of measurements were compared. After 23 comparative experiments, the results showed that, in general, the deviation of the estimated value for FSC was less than 0.03 % (m/m) at an FSC level ranging from 0.035 % (m/m) to 0.24 % (m/m). Hence, UAV measurements can be used for monitoring of ECAs for compliance with FSC regulations.

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