Understanding the influence of El Niño–Southern Oscillation (ENSO) on North Atlantic (NAO) is critical significance for seasonal prediction. The present study found that both Niño3.4 sea surface temperature anomaly (SSTA) intensity and east-west gradient in mid-low latitude Pacific determine linkage between ENSO NAO. Based SSTA gradient, events are classified into three types: strong intensity,...

In this work, the experiment was conducted to investigate the effect of temperature and sub-bituminous coal on upgrading nickel laterites ores by carbothermic reduction. The reduction was carried out in the muffle furnace at a temperature ranging of 800-1100 o C. The produced calcine from reduction step was grounded in vibrating mill, mixed with water and passed on a magnetic separator to separ...

The simplex solution algorithm for linear programs (LP) can be considered as a sub-gradient direction method therefore a full gradient solution algorithm might be more efficient. We have developed a full gradient method which consists of three phases. The initialization phase provides the initial tableau which may not have a full set of basis. The push phase uses a full gradient vector of the o...

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