Behaviour of p-nitrophenol-glucuronide in hydrolysis with mineral acids (author's transl)]

The behaviour of p-nitrophenol and synthetic p-nitrophenol-glucuronide with mineral acids has been investigated. With sulfuric acid (33%) about 93% of the glucuronide derivative have been hydrolysed; the solution was heated in open vessel for 15 sec. With hydrochloric acid (6%) only about 65% of the conjugated p-nitrophenol have been converted to the free form. No losses were detected, when free p-nitrophenol was treated under the same conditions. Three other methods of hydrolysis have been applied.     

Animal experiments on the detection of an exposure to "chemical mace" (author's transl)]

To answer the question whether a negative result of gas chromatographic blood analysis for components of chemical mace proves that no or at most only slight tear gas exposure can have occurred, animal experiments were carried out. In the blood of 10 guinea pigs, which were exposed to the contents of chemical mace for 1--6 h, the solvants 1,1,2-trichloro-1,2,2-trifluorethane (freon 113) and 1,1,1-trichloroethane could easily be detected--even 23 h after the end of exposure or after a storage of the blood samples for 18 weeks--whereas the lacrimator chloracetophenone (CN) could not be found at all. In vitro experiments showed that CN relatively quickly reacts with components of blood. Therefore, blood samples should be analyzed for CN after withdrawal as soon as possible. In case of inhalation of the contents of chemical mace, i.e., after the comparatively mildest form of CN application, most probably no traces of the lacrimator at all can pass into the blood due to the quick reaction of CN with proteins of the respiratory surface of the lung.     

Reasons for sub-Saharan Africa's development deficit that the commission for Africa did not consider

Despite a substantial amount of aid (much larger in per capitaterms than provided to any other region), sub-Saharan Africancountries, with very few exceptions, have regressed since independence.The general history of Africa since achieving independence hasbeen one of development failure. Some protagonists point tosigns of change that argue for more aid. This article suggeststhat aid to Africa has not worked because human, social andinstitutional capital — not financial capital —poses the binding constraint. In that context, doubling aidto Africa from $23 billion in 2004 to $50 billion annually by2015 seems a questionable proposition. This commentary suggestsunconventional ways of dealing with the problems involved inimporting the essential ingredients that Africa needs. It concludeswith the observation that the aid community’s currentobsession with poverty reduction and the Millennium DevelopmentGoals (MDGs) may be harming rather than helping the cause ofdevelopment in Africa and argues that the focus on growth anddevelopment should be restored.