PubMed · 14175797
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S P CHUNN, R H SHANNON. 1964. USAF ROCKET EJECTION EXPERIENCE.. https://pubmed.ncbi.nlm.nih.gov/14175797/
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Despite the ethical codes guiding bereavement research, few studies have been conducted to evaluate the perceived stress experienced by the bereaved, and to explore which methodologies cause least distress. This article investigates how bereaved and traumatised populations experience research participation, and they voice their recommendations for future research. The data are from a nationwide three-phase study in Norway among parents who had lost their child by suicide, SIDS, and accidents between July 1, 1997 and December 31, 1998. Whereas the first phase reported quantitative results of perceived psychosocial health and focused on offered and ideal support (N=262), the second phase investigated the same issues through in-depth interviews of a sub sample (N=69). Phase three, reported here, included the responses of 64 parents to a short questionnaire evaluating research participation in the two previous phases. The results show that 100% of the parents experienced participation as "positive"/"very positive", and none regretted participating. They linked the positive experiences to being allowed to tell their complete story, the format of the interview, and a hope that they might help others. Apparently, processes of meaning reconstruction and increased awareness of the bereavement process were facilitated by the interviews. However, three-quarters of the interviewees reported that it was to a greater or lesser degree painful to talk about the traumatic loss. Regression analysis showed that being a woman and high levels of psychic distress were the most important predictors of a painful interview experience. In order to protect bereaved and vulnerable populations from harm, already existing ethical codes must be strictly applied, and the researchers must listen respectfully to recommendations from bereaved parents.
Decomposition hazards of hydroxylamine (HA)/water solution with and without the addition of iron ion were studied in this paper. Tests were conducted to obtain information about decomposition hazards of HA/water solution following the United Nations recommendations on the transport of dangerous goods. When the heat accumulation storage test was conducted using HA50 wt.%/water solution without the addition of iron ion, the self-accelerating decomposition temperature (SADT) was 80 degrees C. Therefore, HA50 wt.%/water solution was not classified with self-reactive substances following the United Nations recommendations on the transport of dangerous goods. Decomposition hazards of HA50 wt.%/water solution with added iron ion were investigated. The concentration of iron ion in sample of HA50 wt.%/water solution without the addition of iron ion was below 1.0 ppm. The range of the concentration of iron ion in sample of HA50 wt.%/water solution with added iron ion was between 1.0 and 5.4 ppm. The thermal stability of HA50 wt.%/water solution decreased by the addition of iron ion in the heat accumulation storage test. HA50 wt.%/water solution with the addition of iron ion was classified with self-reactive substances following the United Nations recommendations on the transport of dangerous goods. The intensity of the thermal decomposition of HA50 wt.%/water solution increased by the addition of iron ion in the Koenen test.
Chemical reactions allow for a diversity of manufactured products. However, chemical reactivity can lead to significant hazards if not properly understood and controlled. Uncontrolled reactions have led to serious explosions, fires, and toxic emissions. Recent incidents at Lodi, NJ (1995), with five fatalities; West Helena, AR (1997), with one fatality; Paterson, NJ (1998), with nine serious injuries; Allentown, PA (1999), with five fatalities; Whitehall, MI (1999), with one fatality; and Augusta, GA (2001), with three fatalities, underscore the serious repercussions of reactive incidents. These incidents, and numerous others, are compelling reasons to carefully manage reactive chemical safety. Implementation of fundamental safety principles--hazard identification, hazard evaluation, hazard control-throughout a process life cycle is critical for prevention of reactive incidents.