Scientific Solutions designed and fabricated a 14.5 GHz charge-breeder ECR source for the Texas A&M University Cyclotron facility. This charge-breeder source was designed as a charge-breeder from the start rather than as a conversion of an existing ECR system. In addition, the overall system was designed to be modular so that various components can be easily substituted to facilitate technology...

This study compared three groups of grandparents, attempting to disentangle grandparental role demands from child-specific problems as sources of role-specific and grandchild-relationship distress. Those grandparents raising grandchildren reported to demonstrate neurological, physical, emotional, or behavioral problems exhibited the most personal distress, the least role satisfaction and role m...

Recent advances in genetics controversially suggest that the model plant Arabidopsis thaliana performs genetic repair using genetic information that originates in the individual’s grandparent generation. We apply this ancestral genetic repair strategy within an Evolutionary Algorithm (EA) to solve a constraint based optimisation problem. Results indicate that the grandparent based genetic repai...

We now take for granted that despite the disproportionate contribution of females to initial growth of their progeny, there is little or no asymmetry in the contribution of males and females to the eventual character of their shared offspring. In fact, this key insight was only established towards the end of the eighteenth century by Joseph Koelreuter's pioneering plant breeding experiments. If...

The seasonal influence on the seminal characteristics of Shikabrown breeder cocks was evaluated weekly during the three seasons in Northern Guinea Savannah zone of Nigeria. Semen samples were analyzed by gross and routine laboratory methods for volume, motility, concentration, colour, percent dead and percent total abnormality. The highest volume and concentration values of 0.50±0.03ml and 3.60...

Bereaved adolescents (N = 90) who had experienced relatively common death losses (e.g., grandparent, friend) completed the Texas Revised Inventory of Grief and the Emotional Closeness Scale and Continuum. Results indicated that present grief was significantly higher for friend than for grandparent death loss. A MANOVA revealed that those in the high closeness group reported significantly higher...

This study investigated communicative and relational aspects of the grandparent–grandchild relationship that lead to perceptions of age salience and shared family identity with the grandparent. The perceptions represent manifestations of interand intragroup levels of categorization in dealing with the other family member. The association between these group-oriented categorizations and percepti...

This study investigated communicative and relational aspects of the grandparent–grandchild relationship that lead to perceptions of age salience and shared family identity with the grandparent. The perceptions represent manifestations of interand intragroup levels of categorization in dealing with the other family member. The association between these group-oriented categorizations and percepti...

This study employs the concept of structured ambivalence to analyse the effect of grandchild care on quality of life (QoL) in different cultural contexts. We define structured ambivalence as the contradiction between behaviour and cultural norms. The analysis is based on the Survey of Health, Ageing and Retirement in Europe with 14 countries in the sample. We focus on grandparents aged 50 and o...

This article examines the prevalence of grandparent caregiving in the U.S. and presents a national profile of grandparent caregivers based on current data from the national Survey of Families and Households. More than one in ten grandparents are found to have cared for a grandchild for at least 6 months, with most of these having engaged in a far longer-term commitment. Although custodial grand...