the release of fe from soil solid phases into soil solution is a dynamic process that regulates the continuous supply of this element to growing plants. to ascertain the pattern of fe release, the kinetics of fe release from six soils by diethylenetriaminepentaacetic acid (dtpa) solution were investigated using soil samples taken from two different agroclimatic regions of iran. all soils were c...

Accepted for publication 28 April 1993 Case report A 20-year-old woman with difficulties in focusing on both far and near objects presented to us. She had an egg sized left subtentorial arachnoid cyst. Her corrected visual acuity was 20/20 bilaterally. On leftward gaze, nystagmus was evoked. Slight ocular saccades and hypometria were present. Convergence was good. Pupillary sizes were normal an...

Neurotransmitter release depends on the fusion of secretory vesicles with the plasma membrane and the release of their contents. The final fusion step displays higher-order Ca(2+) dependence, but also upstream steps depend on Ca(2+). After deletion of the Ca(2+) sensor for fast release - synaptotagmin-1 - slower Ca(2+)-dependent release components persist. These findings have provoked working m...

A double blind crossover trial with active or placebo slow release theophylline (Slo-phyllin) in children with asthma aged up to 4 years is described. Although no difference in symptom scores was shown, other differences in favour of active treatment were noted. We conclude that this preparation is of benefit in the management of the wheezing preschool child. The value of symptom scores as an i...

STUDY OBJECTIVE Oral theophylline treatment may be helpful in controlling severe asthma during pregnancy. This treatment, however, has been suspected of causing both complications and malformations. The objective of this investigation was to study the influence of theophylline treatment on the course of pregnancy and delivery and on maternal and infant health. SETTING Respiratory unit, antena...

Although the prevalence of caries has decreased dramatically over the past decades, it has become a polarised disease, with most of subjects presenting low caries levels and few individuals accounting for most of the caries affected surfaces. Thus it become evident for the need of clinical approaches directed at these high-risk patients, in order to overcome problems related to compliance and l...

There have been several recent developments in slow-release fertilizers. These materials supply nutrients continuously over an extended period in contrast to water soluble fertilizers which are immediately available after incorporation in moist soil. Slow-release fertilizers are not subject to rapid leaching loss and do not easily burn plants from over-application. The major need for slow relea...

Dental caries still continues to be a problem for majority of individuals and it can be a serious problem for medically compromised, developmentally disabled and elderly individuals. Water fluoridation, systemic and topical fluorides have been used for many years to supply supplemental fluoride to combat dental caries. The latest fluoride research is investigating the use of slow release device...