Farm-Level Pathways to Improved Nutritional Status: Introduction to the Special Issue

Abstract

Global, national and local policies and programmes for agricultural development are recurrently justified based on their alleged role in improving food and nutrition security. However, strikingly little evidence is available to prove that a direct, household-level link between agricultural production and improved nutrition exists. The objective of this special issue is to systematically and empirically test, using data from Africa and South Asia, whether a relationship between household agricultural production and nutrition can be found. Overall, the studies in this special issue support the hypothesis that household agricultural production has direct and important linkages with dietary patterns and nutrition.     

Immunochemical screening: manipulation, handling and interpretation errors, exemplified by benzodiazepines

The article describes problems related to immunochemical screening-tests with special regard to benzodiazepines, which are commonly used for therapeutic purposes. Focal points are adulteration, manipulation and handling of samples, the selection of cut-off-values, specificity and cross-reactivity, influence of biotransformation and frequently observed pitfalls in the interpretation of the analytical results.     

Eco-regional conservation and development in Madagascar: a review of USAID-funded efforts in two priority landscapes

The need for eco-regional or landscape-scale conservation and development has been widely recognised in Madagascar, yet implementation remains problematic. The approach was initially driven by biodiversity-conservation concerns, without enough emphasis on sustainable development, especially agriculture. Current challenges include consensus building for eco-regional visions, strengthening partnerships with government institutions, and negotiating land-use trade-offs within focal landscapes. Increased attention to revenue generation from agriculture and forest products, as well as enhanced communication and widespread participation by all stakeholders, should augment the success of broad-scale conservation and development programmes.     

Being poor,feeling poorer: Combining objective and subjective measures of welfare in Albania

Abstract

In this paper we investigate how combining objective and subjective measures of welfare can enrich traditional poverty profiles by exploring the relationship between these welfare measures, and examining what explains the differences between the two. One important finding of our analysis (using data for Albania) is that reconciling subjective and objective poverty profiles suggests the presence of sizable economies of scale. This result calls for increased attention to the proper estimation of a scale parameter for poverty analysis, as changes in assumptions on economies of size and adult equivalence scales are likely to produce significant changes in the analysis of poverty and its distribution across households and individuals.     

Party research: Western European bias and the ‘African labyrinth’

For a long time Africa's political parties have been neglected in political science research, although they have mushroomed during the last decade and are being seen as crucial for the democratic development of the continent. Part of the neglect was due to the very specific western European bias of political science party research, while Africanists claimed the uniqueness of the subject. Despite this bias, the article argues that the framework of established party research can be applied to African parties as well – provided that some modifications are considered. These necessary modifications are explained for four ‘fields’, namely the functionalist approach, the cleavage model, the inclusion of informal politics, and finally whether a distinctively ‘African’ or a universal party typology approach should be applied.     

Drug screening in urine--common pitfalls in measurement and interpretation

Nowadays immunoassays are used for the rapid screening of drugs world-wide. Despite the fact that they are a highly valuable tool for the test of legal and illicit drugs, there is a non-negligible risk of false positive and false negative findings, and many pitfalls must be taken into account when using these tests in an uncritical manner and without valid confirmation procedures. In accordance with the committee for "problems of threshold values for medical and addictive drugs" set up by German scientific societies (in particular GTFCh, DGRM and DGVM), immunoassays are recommended as a useful tool for screening. But confirmation analysis with conclusive methods (GC/MS or LC/MS) is indispensable for valid substance identification, discrimination between active and inactive metabolites, detection of escort substances and accurate determination of concentrations in body fluids.     

Reliability of % vol. declarations on labels of wine bottles

The Council Regulation (EC) no. 1493/1999 of 17 May 1999 on the common organisation of the market in wine (Abl. L 179 dated 14/7/1999) and the GMO Wine 2000 (Annex VII A) stipulates that the labels of wine bottles have to indicate, among others, information on the sales designation of the product, the nominal volume and the alcoholic strength. The latter must not differ by more than 0.5% vol. from the alcoholic strength as established by analysis. Only when quality wines are stored in bottles for more than three years, the accepted tolerance limits are +/- 0.8% vol. The presented investigation results show that deviations have to be taken into account which may be highly relevant for forensic practice.