Factors affecting the reactivity of chars and cokes during low-temperature (640 .degree.C) steam gasification

The value of the annual legume Trifolium subterraneum L. (subterranean clover) in Australian agriculture warrants more precise knowledge of factors affecting flowering and prolific seeding. The effect of temperature and photoperiod on flower initiation in early and later flowering varieties has been investigated in an effort to determine the geographical limits of the use of subterranean clover in Australia. At any time of sowing, the length of the growing season of a variety depends greatly on the variety's response to the temperature level and to the photoperiod of the first few weeks after germination. In all varieties of subterranean clover so far examined flower initiation is accelerated by a period of low temperature. In the later varieties, flower initiation is prevented by an insufficient period of low temperature. The length of the necessary cold period is shortened under longer photoperiod. Early varieties are early flowering because they do not require so long a cold period or so low a temperature as late varieties.

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Catalytic steam gasification of sawdust char on K-based composite catalyst at high pressure and low temperature

Chemical Engineering Science ◽

10.1016/j.ces.2019.05.009 ◽

2019 ◽

Vol 205 ◽

pp. 341-349 ◽

Cited By ~ 3

Author(s):

Weihong Jiao ◽

Zhiqing Wang ◽

Xing Zhou ◽

Yangang Mei ◽

Rongtao Feng ◽

...

Keyword(s):

High Pressure ◽

Low Temperature ◽

Steam Gasification ◽

Composite Catalyst

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Two-stage steam gasification of waste biomass in fluidized bed at low temperature: Parametric investigations and performance optimization

Bioresource Technology ◽

10.1016/j.biortech.2010.09.016 ◽

2011 ◽

Vol 102 (2) ◽

pp. 1975-1981 ◽

Cited By ~ 92

Author(s):

Xianbin Xiao ◽

Xianliang Meng ◽

Duc Dung Le ◽

Takayuki Takarada

Keyword(s):

Low Temperature ◽

Fluidized Bed ◽

Performance Optimization ◽

Steam Gasification ◽

Waste Biomass ◽

Two Stage ◽

And Performance

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Synchroshear Versus Conventional Shear Mechanisms in Transitionmetal Disilicides with the C40 Structure

MRS Proceedings ◽

10.1557/proc-578-93 ◽

1999 ◽

Vol 578 ◽

Author(s):

H. Inui ◽

M. Yamaguchi

Keyword(s):

High Temperature ◽

Low Temperature ◽

Plastic Flow ◽

Deformation Mechanism ◽

Deformation Behavior ◽

Basal Slip ◽

Room Temperature ◽

Onset Temperature ◽

Factors Affecting ◽

Temperature Group

AbstractThe deformation behavior of (0001) <1210> basal slip in single crystals of five different transitionmetal disilicides with the C40 structure has been investigated in the temperature range from room temperature to 1500°C in compression. These disilicides are found to be classified into two groups depending on the onset temperature for plastic flow. The low-temperature group, which consists of VSi2, NbSi2 and TaSi2, exhibits the onset temperature for plastic flow around 0.3 T/Tm (melting temperature) and deforms by a conventional shear mechanism. In contrast, the high temperature group, which consists of CrSi2 and Mo(Si,Al)2, exhibits the onset temperature around 0.6T/Tm and deforms by a synchroshear mechanism. Factors affecting the deformation mechanism in these C40 disilicides are discussed in terms of directionality of atomic bonding and the relative stability of the C40 phase with respect to the C11b phase.

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