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not treated. Therapy proved rnore effective for children than for adolescents, particularly when the therapists were paraprofessionals (e.g., parents, teachers) or graduate students. Professionals (with doctor's or master's degrees) were especially effective in treating overcontrolled problems (e

Abstract approved: Ribosomes are multicomponent macromolecular particles and are essential for the survival of cells in all organisms. The ribosome's universal function is to catalyze polypeptide synthesis through translation of mRNA transcripts. Ribosomes from Escherichia coli, eubacterial organisms, have a sedimentation coefficient of 70S and are composed of 30S and 50S ribonucleoprotein subunits. The small ribosomal subunit is an assembly of 21 different proteins and a 16S ribosomal RNA. Within the 16S rRNA there are a few short stretches of universally conserved sequences spanning positions 517-533, 1394-1408, and 1492-1506. Clear functions for these sequence zones have not yet been assigned. Here I report a kinetic analysis of these highly conserved regions in the 16S rRNA and within the 30S ribosomal subunits. Binding affinity was measured in experiments that were based on protection from

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Abstract approved: Contextual teaching is emerging as an important concept in education reform efforts. This field study attempts to clarify the concept of contextual teaching by defining and identifying characteristics found in the research literature, experienced teacher observations

Abstract approved:

A sample of factors presumed relevant to the time required to complete doctoral degrees (TTC) was explored in a survey of 154 recent graduates of Natural Science, Social Science, and Humanities doctoral programs at York University. In addition to the variables of gender and discipline

suggest that healthcare professionals, particularly doctors, are reluc-tant to report adverse events to a superior. The results show that healthcare professionals, as might be expected, are most likely to report an incident to a colleague when things go wrong (F(2,520) = 82.01, p<0.001). The reporting

Temporal changes of metal solubility have been repeatedly observed in soils equilibrated with metal salt solutions. This phenomenon is known as aging, yet factors that affect the degree of metal aging remain largely unexamined. In this study, we compared the extent of aging on metal partitioning

Abstract. This text summarises the PhD thesis that Roel Leus presented to obtain the degree of Doctor in Applied Economics at the Katholieke Universiteit Leuven, in September 2003. The promotor of the thesis was professor Willy Herroelen. The thesis is written in English and is available from