Identification of white efflorescence on wooden African objects

This article describes the investigation of white efflorescence on eight wooden African objects from Malawi and Zambia and the treatment of the objects to remove the deposits. The source of the efflorescence on these objects was determined to be the heartwood from which they were carved. Using gas chromatography-mass spectrometry and Fourier transform infrared spectrometry, the crystalline efflorescence was found to consist of homopterocarpin and pterocarpin, two isoflavonoid compounds found in woods and shrubs belonging to the genus Pterocarpus, and African Baphida nitida. The crystal growth appeared to be heaviest on areas of the objects that were more deeply carved as well as on those objects without a surface finish. The storage conditions of the collection were studied and found to have likely accelerated the rate and extent of the natural movement of the pterocarpan compounds from the interior of the heartwood to the outer surfaces.     

Food Choice Is Multifaceted,Contextual, Dynamic,Multilevel, Integrated,and Diverse

Eating is broadly conceptualized as food choice. Food choice is a complex activity with many dimensions. Food choice is multifaceted as it involves whether, where, when, how long, how, why, with whom, for whom, and under what conditions eating occurs. Food choice is contextual as it is situated within specific conditions and settings involving both individuals and institutions. Food choice is dynamic as it unfolds and is embedded in eating episodes over lifetimes within historical eras. Food choice is multilevel as physical, biological, psychological, and sociocultural factors operate simultaneously and interact. Food choice is integrated as people coordinate many considerations to construct specific eating activities. Food choice is diverse in its broad scope of distinct and unique eating activities. Food choice can be examined using both multi‐perspective and multi‐purpose approaches, and it may not be possible to integrate different perspectives into a unified approach to understanding and changing food choice.     

Reading: A Pastime of the Past?

It is somewhat of a truism to say that reading is not what it used to be. ‘Texts’for reading now include many other media than simply print on pages and this fact has occasioned some concern among those who fear that reading television or computer-based texts may reduce or impoverish children's overall reading experience. Chris Robertson and her students have been investigating these issues through interviews with children and have found that reading and technology are not actually in conflict but can be mutually supportive. This article suggests that teachers need to think more creatively about how to use alternative texts in developing children's reading.     

Tenure,support of collective bargaining,and unionism in higher education: Some challenging findings

Questionnaire responses of a large educational faculty in a private university were used to examine support for collective bargaining and several propositions about unionism. The little existing research on specific schools within universities suggests that education faculties modestly support unionism, with tenure related negatively to it. Parametric and nonparametric analyses of data from this faculty revealed considerably different results, including far greater union support and tenure's positive relationship with unionism. This investigation suggests that theorizing about unionism and collective bargaining within the schools of universities, such as schools of education, needs to be reconsidered.An earlier version of this paper was presented at the Annual Meeting of the American Education Research Association in San Francisco, April 19–23, 1976.     

Action Learning—a learning and teaching method in the preparation programme for supervisors of midwives

Supervision of midwives is a statutory responsibility, which provides a mechanism for support and guidance to every practising midwife in the United Kingdom. To be eligible for appointment as a supervisor, midwives are required to undertake a preparation programme successfully. Because of the changing nature of the professional role and education, the level of the programme of preparation has evolved from an attendance course, to programmes delivered at diploma, degree and, more recently, Masters' level. In collaboration with clinical colleagues and the statutory authorities, the University of Hertfordshire has presented a programme of preparation at Masters' level since 1997. Revalidation in 2001 provided the opportunity to review the learning and teaching methods, and a decision was made to use Action Learning as an important component of the new programme that commenced in 2002. Alongside the normal university quality assessment mechanisms, a systematic evaluation was undertaken to explore the acceptability and perceived usefulness of Action Learning by the students of the second and third cohorts. This paper presents the findings of this evaluation.