scholarly journals The Effect of Temperature on Promotion of the Oxidation of Nitric Oxide and Propene by the Thermal Decomposition of Peroxyacetyl Nitrate (PAN) under Dark Conditions

1995 ◽  
Vol 2 (4) ◽  
pp. 186-195
Author(s):  
Issei IWAMOTO ◽  
Hisao MORITA ◽  
Atsushi KOSAKA ◽  
Hitoshi TANIHARA ◽  
Kazuyoshi MITA ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Thermal Decomposition ◽  
Effect Of Temperature ◽  
Peroxyacetyl Nitrate ◽  
Dark Conditions

Promotion of the Oxidation of Nitric Oxide and Hydrocarbon by the Thermal Decomposition of Peroxyacetyl Nitrate (PAN) at Night

1994 ◽  
Vol 23 (2) ◽  
pp. 251-254
Author(s):  
Issei Iwamoto ◽  
Hitoshi Tanihara ◽  
Masaaki Kawahara ◽  
Soichi Otsuka ◽  
Kazuhiko Sakamoto
Keyword(s):  
Nitric Oxide ◽  
Thermal Decomposition ◽  
Peroxyacetyl Nitrate

A Shock Tube Study of the Thermal Decomposition of Nitric Oxide

1975 ◽  
Vol 10 (3-4) ◽  
pp. 155-162 ◽  
Author(s):  
QUAC LE TRUNG ◽  
DONALD MACKAY ◽  
AKIRA HIRATA ◽  
OLEV TRASS
Keyword(s):  
Nitric Oxide ◽  
Thermal Decomposition ◽  
Shock Tube ◽  
Tube Study

Influence of Nitric Oxide on the Thermal Decomposition of Dimethyl Ether. Gaseous Catalysis

Nature ◽  
1936 ◽  
Vol 138 (3491) ◽  
pp. 546-547 ◽  
Author(s):  
P. F. GAY ◽  
MORRIS W. TRAVERS
Keyword(s):  
Nitric Oxide ◽  
Thermal Decomposition ◽  
Dimethyl Ether

Seed germination ecology of Sumatran fleabane (Conyza sumatrensis) in relations to various environmental parameters

Weed Science ◽  
2021 ◽  
pp. 1-26
Author(s):  
Gulshan Mahajan ◽  
Asheneel Prasad ◽  
Bhagirath Singh Chauhan
Keyword(s):  
Seed Germination ◽  
Light Intensity ◽  
Chloride Concentration ◽  
Soil Surface ◽  
Control Treatment ◽  
Effect Of Temperature ◽  
Burial Depth ◽  
Germination Ecology ◽  
Wide Range ◽  
Dark Conditions

Abstract Sumatran fleabane [Conyza sumatrensis (Retz.) Walker] is an emerging weed in the Australian cropping region. Populations resistant to glyphosate have evolved in Australia, creating the demand for information regarding the seed germination ecology of glyphosate-resistant (R) and glyphosate susceptible (S) populations of C. sumatrensis. A study was conducted to examine the effect of temperature, light intensity, salt stress, osmotic stress, and burial depth on the germination and emergence of two populations (R and S) of C. sumatrensis. Both populations were able to germinate over a wide range of alternating day/night temperatures (15/5 to 35/25 C). In light/dark conditions, the R population had higher germination than the S population at 20/10 and 35/25 C. In the dark, the R population had higher germination than the S population at 25/15 C. In the dark, germination was inhibited at 30/20 C and above. Averaged over populations, seed germination of C. sumatrensis was reduced by 97% at zero light intensity (completely dark conditions) compared with full light intensity. Seed germination of C. sumatrensis reduced by 17 and 85% at an osmotic potential of −0.4, and −0.8 MPa, respectively, compared with the control treatment. The R population had lower germination (57%) than the S population (72%) at a sodium chloride concentration of 80 mM. Seed germination was highest on the soil surface and emergence was reduced by 87 and 90% at burial depths of 0.5 and 1.0 cm, respectively. Knowledge gained from this study suggests that a shallow-tillage operation to bury weed seeds in conventional tillage systems, and retention of high residue cover in a zero-till system on the soil surface may inhibit the germination of C. sumatrensis. This study also warrants that the R population may have a greater risk of invasion over a greater part of a year due to germination over a broader temperature range.

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