Influence of Aeration Rate on the Physio-Chemical Characteristics of Biodried Dairy Manure - Wheat Straw Mixture

2012 ◽  
Vol 28 (3) ◽  
pp. 407-415 ◽  
Author(s):  
M. A. Sharara ◽  
S. Sadaka ◽  
T. A. Costello ◽  
K. VanDevender
Keyword(s):  
Wheat Straw ◽  
Dairy Manure ◽  
Aeration Rate ◽  
Chemical Characteristics

WHEAT STRAW COVER FOR REDUCING AMMONIA AND HYDROGEN SULFIDE EMISSIONS FROM DAIRY MANURE STORAGE

1999 ◽  
Vol 42 (4) ◽  
pp. 1095-1102 ◽  
Author(s):  
S. K. Xue ◽  
S. Chen ◽  
R. E. Hermanson
Keyword(s):  
Hydrogen Sulfide ◽  
Wheat Straw ◽  
Dairy Manure ◽  
Manure Storage

Anatomical, morphological and chemical characteristics of kaun straw (Seetaria-ltalika)

2020 ◽  
Vol 35 (2) ◽  
pp. 288-298 ◽  
Author(s):  
Taslima Ferdous ◽  
M. Abdul Quaiyyum ◽  
Shahriar Bashar ◽  
M. Sarwar Jahan
Keyword(s):  
Wheat Straw ◽  
Rice Straw ◽  
Lignin Content ◽  
Slenderness Ratio ◽  
Ash Content ◽  
Pulp Yield ◽  
Chemical Characteristics ◽  
Cellulose Content ◽  
Fiber Wall ◽  
Flexibility Coefficient

AbstractAnatomical, morphological and chemical characteristics of kaun straw were examined to assess their suitability for paper production and the properties were compared with wheat straw and rice straw. It was found that the fiber length of kaun straw is slightly shorter than that of wheat straw and longer than that of rice straw. It has wider fiber wall thickness than that of wheat straw and rice straw. It had acceptable derived values, especially slenderness ratio, which was lower than that of wheat straw and rice straw, and higher runkel ratio and lower flexibility coefficient. Chemical analysis of kaun straw revealed satisfactory levels of α-cellulose content (35.9 %) and klason lignin content (19.3 %). The ash content in kaun straw (7.32 %) showed lower value than that of wheat straw and rice straw. In optimum cooing conditions, kaun straw produced pulp yield of 30.0 % and 41.7 % with kappa number 15.1 and 22.5 in soda-AQ and formic acid pulping processes, respectively, the values of which were lower than that of wheat straw and rice straw.

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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