Monitoring and Assessment of the Microbial Populations and Chemical Characteristics of Paraquat Treated Soil

2021 ◽  
pp. 15-25
Author(s):  
John Kagana Dagze ◽  
B. Chimbekujwo Ishaku ◽  
Tari Tizhe Dlama
Keyword(s):  
Microbial Populations ◽  
Chemical Characteristics ◽  
Treated Soil

Degradation of surface-water dissolved organic matter: influences of DOM chemical characteristics and microbial populations

Hydrobiologia ◽  
2005 ◽  
Vol 539 (1) ◽  
pp. 1-11 ◽  
Author(s):  
Katherine C. Young ◽  
Kathryn M. Docherty ◽  
Patricia A. Maurice ◽  
Scott D. Bridgham
Keyword(s):  
Organic Matter ◽  
Surface Water ◽  
Dissolved Organic Matter ◽  
Microbial Populations ◽  
Chemical Characteristics

Microbial populations in trifluralin-treated soil

1984 ◽  
Vol 76 (1-3) ◽  
pp. 379-387 ◽  
Author(s):  
B. M. Olson ◽  
R. B. McKercher ◽  
J. J. Germida
Keyword(s):  
Microbial Populations ◽  
Treated Soil

Changes in Microbial Populations in Paraquat-treated Soil*

Weed Research ◽  
1973 ◽  
Vol 13 (2) ◽  
pp. 231-233 ◽  
Author(s):  
N. D. CAMPER ◽  
E. A. MOHEREK ◽  
JANNIE HUFFMAN†
Keyword(s):  
Microbial Populations ◽  
Treated Soil

Microbial populations in trifluralin-treated soil

1984 ◽  
pp. 379-387
Author(s):  
B. M. Olson ◽  
R. B. McKercher ◽  
J. J. Germida
Keyword(s):  
Microbial Populations ◽  
Treated Soil

Characterization of defects in tabular silver halide grains

1990 ◽  
Vol 48 (4) ◽  
pp. 1046-1047
Author(s):  
C. Goessens ◽  
D. Schryvers ◽  
J. Van Landuyt ◽  
A. Verbeeck ◽  
R. De Keyzer
Keyword(s):  
Radiation Damage ◽  
Silver Halide ◽  
Chemical Characteristics ◽  
X Ray ◽  
Free Region ◽  
Central Defect ◽  
Crystallographic Defects ◽  
Physical And Chemical ◽  
Two Sides

Silver halide grains (AgX, X=Cl,Br,I) are commonly recognized as important entities in photographic applications. Depending on the preparation specifications one can grow cubic, octahedral, tabular a.o. morphologies, each with its own physical and chemical characteristics. In the present study crystallographic defects introduced by the mixing of 5-20% iodide in a growing AgBr tabular grain are investigated. X-ray diffractometry reveals the existence of a homogeneous Ag(Br1-xIx) region, expected to be formed around the AgBr kernel. In fig. 1 a two-beam BF image, taken at T≈100 K to diminish radiation damage, of a triangular tabular grain is presented, clearly showing defect contrast fringes along four of the six directions; the remaining two sides show similar contrast under relevant diffraction conditions. The width of the central defect free region corresponds with the pure AgBr kernel grown before the mixing with I. The thickness of a given grain lies between 0.15 and 0.3 μm: as indicated in fig. 2 triangular (resp. hexagonal) grains exhibit an uneven (resp. even) number of twin interfaces (i.e., between + and - twin variants) parallel with the (111) surfaces. The thickness of the grains and the existence of the twin variants was confirmed from CTEM images of perpendicular cuts.

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