The big things bowed : the community ministry of Catholic funeral leaders in a rural South African context

Funeral leaders share the ministry of comfort with others. They make a specific religious contribution towards restoring life or decontaminating from death, which affects the faith and hope of the bereaved. Their ministry responds to a need of the bereaved by affirming community in the face of death. It is based on spirituality and grounded in the biblical and apostolic tradition; it is carried out in a catholic contextualisation. The leaders' insertion into both the cultural background and the religious realm encourages contextualisation. Their verbal proclamation is done in various ways and is linked to ritual. It reflects the three dimensions of the model employed in pastoral theology by taking life seriously, interpreting it in the light of faith, and leading a celebration that opens up the future of the participants. The leaders' proclamation is sincere when they link cultural family-procedures and church rituals in a parallel way. Sincerity suffers when community leaders, used to provide a comprehensive service, cannot preside over the promised celebration of the Eucharist, which could be the culmination of the rite of passage. Their ministry remains incomplete because of factors beyond their control. It nevertheless contributes to justice in many ways, in particular by deploying local people. While the ministry is carried out independently, it depends on collaboration with the pastoral staff, in particular the priests. They safeguard the quality of ministry by formation and through supervision. The collaborative formation contributes to the cultural insertion of the local and expatriate staff and enhances their competence. This collaborative ministry serves the bereaved, the community of faith, and theology. It allows the development of a contextualised liturgy, and a local theology. It is a step forward on the road towards a genuine form of community ministry in this particular African context. It corresponds with contemporary secular approaches towards leadership and management. African approaches emphasise the need for contextualised management forms. They assume the compatibility of different practices employed in different contexts. The comprehensively grounded ministry seems to contribute to the avoidance or overcoming of some of the grave shortcomings of ministry as provided in the past.Christian Spirituality, Church History and MissiologyD.Th. (Missiology

Origin of Spurious Ultrasonic Echoes in Stainless Steel Piping with Weld Overlay

The initiation and growth of intergranular stress-corrosion cracking (IGSCC) in the heat-affected zone of welds in stainless steel reactor piping has been a subject of concern to electric utilities for over ten years. This type of crack can be detected with ultrasonic shear waves during normal maintenance periods with a reliability of up to 80% [1]. Often, when crack indications have been found, the utility has been allowed to apply a weld metal overlay as a temporary repair measure. However, the complex, elastically anisotropic microstructure of the overlay considerably reduces the reliability of subsequent ultrasonic inspections. This paper addresses the problems arising because of the overlay

Analytic Diffraction Corrections to Ultrasonic Scattering Measurements

Ultrasonic theories generally predict a scattering amplitude which relates a spherically spreading, far-field scattered wave to an incident plane wave. In ultrasonic immersion measurements, the frequency and angular dependences of the scattering amplitude are convolved with those of the transmitting and receiving transducers and the propagation through the liquid-solid and solid-liquid interfaces. This paper presents a set of approximate corrections for these effects for the cases of angle beam inspection through planar, spherically curved or cylindrically curved surfaces. The primary parameters in the correction are the function D, which corrects for the diffraction effects occurring during a transducer calibration experiment, and the function C, which describes the on-axis pressure variation of the beam. Values of C and D are available in the literature for the case of a piston transducer radiating into an infinite fluid medium. The major portion of this paper is concerned with the extension of those results to the aforementioned two media problems in which mode conversion, refraction, diffraction, and focussing all play interrelated roles. Results of preliminary experiments to test the corrections are also included

Chloroquine activates the p53 pathway and induces apoptosis in human glioma cells

Glioblastoma is the most common malignant brain tumor in adults. The currently available treatments offer only a palliative survival advantage and the need for effective treatments remains an urgent priority. Activation of the p53 growth suppression/apoptotic pathway is one of the promising strategies in targeting glioma cells. We show that the quinoline derivative chloroquine activates the p53 pathway and suppresses growth of glioma cells in vitro and in vivo in an orthotopic (U87MG) human glioblastoma mouse model. Induction of apoptosis is one of the mechanisms underlying the effects of chloroquine on suppressing glioma cell growth and viability. siRNA-mediated downregulation of p53 in wild-type but not mutant p53 glioblastoma cells substantially impaired chloroquine-induced apoptosis. In addition to its p53-activating effects, chloroquine may also inhibit glioma cell growth via p53-independent mechanisms. Our results clarify the mechanistic basis underlying the antineoplastic effect of chloroquine and reveal its therapeutic potential as an adjunct to glioma chemotherapy