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P Van

Publications and source records attributed to P Van.

3 recordsLinked to original sources
PubMed2000

Mesoscopic dynamics of microcracks

The mesoscopic concept is applied to the description of microcracks. The balance equations of the cracked continuum result in mesoscopic directional balances of mass, momentum, angular momentum, and energy. Averaging over the length of the cracks gives the corresponding orientational balances. A further averaging process leads to the macroscopic balance equations of the microcracked continua. Dynamic equations for the fabric tensors of different order are derived using a multipole moment expansion of the orientational crack distribution function. The simple example of Griffith cracks is treated. The role of physical assumptions in the microcrack representations and the different macroscopic internal variable representations of microcracks are discussed.

Journal Article↗
PubMedDate not supplied

Breaking the silence of African American women: healing after pregnancy loss.

African American women experience pregnancy and infant losses at rates twice those of European American women and women of other recognized ethnic and racial groups. Health professionals, families, and friends tend to avoid discussions of these losses because grief following pregnancy or infant loss is frequently considered insignificant. Bereaved mothers whose grief is unrecognized are likely to have grief responses that are exaggerated in intensity and duration. In this article I reflect part of a larger qualitative study in which I explored the pregnancy-related experiences of 10 African American women. The purpose of this article is to describe the perceived strategies these women used to heal after pregnancy or infant loss. Individual interviews were conducted using open-ended questions. Grounded theory methodology was used to analyze the data. The healing strategies used by the participants reflect predominately inner and instinctive processes, resources, and remedies. Culturally appropriate strategies for health care interventions and research activities are offered.

Abortion, Legal↗