Food meanings in HIV and AIDS caregiving trajectories: Ritual, optimism and anguish among caregivers in Lesotho

The article describes the caregiving responsibility to provide food for chronically ill family members and the meanings attached to food and eating when ill created stress for family caregivers. The results come from a qualitative phenomenological study using in-depth interviews with 21 family caregivers of chronically ill HIV and AIDS patients in one district in Lesotho. Analysis of the interview data showed that the caregivers attached profound meanings to food and feeding care recipients. Their perceptions about food as part of family life and caring, the role of food and eating in curbing disease progression, the link between food and medical efficacy and the link between food and life led to ritualised behaviour around food, and moments of optimism and anguish in caregiving. Patients’ behaviour in relation to food was in most instances inconsistent with the caregivers’ goals, thus leading this aspect of caregiving to induce stress. Services intended to support home-based caregivers and patients could contribute to the reduction of stress associated with food through suitably tailored food assistance and professional support to caregivers to enhance their competences and understanding of the dynamics of food intake as AIDS progressed

Prediction and measurement of electron density and collision frequency in a weakly ionised pine fire

Pine litter flame is a weakly ionised medium. Electron-neutral collisions are a dominant form of particle interaction in the flame. Assuming flame electrons to be in thermal equilibrium with neutrals and average electron-neutral collision frequency to be much higher than the plasma frequency, the propagation of microwaves through the flame is predicted to suffer signal intensity loss. A controlled fire burner was constructed where various natural vegetation species could be used as fuel. The burner was equipped with thermocouples and used as a cavity for microwaves with a laboratory quality network analyzer to measure wave attenuation. Electron density and collision frequency were then calculated from the measured attenuation. The parameters are important for numerical prediction of electromagnetic wave propagation in wildfire environments. A controlled pine litter fire with a maximum flame temperature of 1080 K was set in the burner and microwaves (8–10.5 GHz) were caused to propagate through the flame. A microwave signal loss of 1.6–5.8 dB was measured within the frequency range. Based on the measured attenuation, electron density and electron-neutral collision frequency in pine fire were calculated to range from 0.51–1.35 × 1016 m−3 and 3.43–5.97 × 1010 s−1 respectively

The new variant famine hypothesis: moving beyond the household in exploring links between AIDS and food insecurity in southern Africa

This is the post-print version of the final published article that is available from the link below. Copyright @ 2009 SAGE Publications.A number of southern African countries have experienced food crises during recent years. The fact that the scale of these crises has been disproportionate to the apparent triggers of climatic adversity or production decline has led to the suggestion that they are more closely related to the AIDS pandemic, which is at its most extreme in many of the same countries. This hypothesis, developed by de Waal and Whiteside (2003), has been termed ‘New Variant Famine’(NVF). The New Variant Famine hypothesis is helpful in drawing attention to the effects of AIDS in diminishing both food production and capacity to purchase food, but it focuses more intensely on the household level than many other theories that seek to explain food insecurity, which tend to emphasise the integration of peasants into a capitalist market economy, and the functioning of markets and institutions. The household level focus also characterises much research on the impacts of AIDS. In this article we argue that the effects of AIDS on food security are not confined to the household level, and that an NVF analysis should also consider processes operating within and beyond the household including social relationships, relations of age and gender, colonial inheritance and contemporary national and international political economy. Recognition of these processes and how they interact with AIDS may offer greater scope for political mobilisation rather than technocratic responses