The prevalence and prognosis of severe left ventricular dysfunction after infarction was prospectively analyzed in a series of 259 male patients aged 60 years or less surviving an acute myocardial infarction. All patients underwent coronary angiography 30 days after the acute event and were followed up for a mean period of 34 months (range, 15 to 55 months). Forty-five patients (17 percent) wer...

Many statistics about British settlers in New Zealand come from death certificates. This article suggests, then trials, a longitudinal database by linking the records of 1,860 first generation settlers. They had high levels internal migration before leaving Britain and between 20 30 percent lived another country they arrived here. Between 12 19 them left, though only after 16 years on average. ...

The orthogonal array design has been used to determine the optimum conditions for gold recovery from Zarshuran refractory gold sulfide ore (Iran) by direct cyanidation and roasting-cyanidation. The Taguchi method was used as the experimental design to determine the optimum conditions of dissolution behavior of gold with cyanidation and roasting-cyanidation from Zarshuran refractory gold ore . T...

Some researchers report that one potential tool for reducing fungicide requirements on turfgrasses may be the use of silicon (Si) fertilizers. Silicon has been reported to suppress diseases on various crops in the last decade (Raid et al., 1992; Cherif et al., 1994; Deren et al, 1994; Seebold et al, 2000; Seebold et al., 2001). Researchers in North Carolina found that brown patch and dollar spo...

The preschool age represents a critical period of rapid physical, cognitive and psychosocial development in children. quality intensity the care, nutrition, stimulation that children receive during this time largely determine level physical they can achieve. This paper examines potential challenges learning opportunities self-directed environments offer teachers from perspective teaching safety...