Fast gas chromatography of explosive compounds using a pulsed-discharge electron capture detector

The detection of a mixture of nine explosive compounds, including nitrate esters, nitroaromatics, and a nitramine in less than 140 sec is described. The new method employs a commercially available pulsed-discharge electron capture detector (PDECD) coupled with a microbore capillary gas chromatography (GC) column in a standard GC oven to achieve on-column detection limits between 5 and 72 fg for the nine explosives studied. The PDECD has the benefit that it uses a pulsed plasma to generate the standing electron current instead of a radioactive source. The fast separation time limits on-column degradation of the thermally labile compounds and decreases the peak widths, which results in larger peak intensities and a concomitant improvement in detection limits. The combination of short analysis time and low detection limits make this method a potential candidate for screening large numbers of samples that have been prepared using techniques such as liquid-liquid extraction or solid-phase microextraction.     

Objectivity and truth: Problems in doing feminist research

This paper examines principles of feminist research and discusses the authors' attempts to use these principles in a systematic way in their own research. Three principles of feminist research are identified: research should contribute to women's liberation through producing knowledge that can be used by women themselves; should use methods of gaining knowledge that are not oppressive; should continually develop a feminist critical perspective that questions dominant intellectual traditions and can reflect on its own development.Consciously applying these principles in a research study of the relation between changes in consciousness and the changes in the structural situation of individuals raised several methodological issues and dilemmas. These include the impossibility of creating a research process that completely erases the contradictions in the relationship between the researcher and the researched; the difficulties in analysing change as a process; the tension between the necessity of organizing the data and producing an analysis which reveals the totality of women's lives; and problems of validity, particularly those raised when the research process becomes part of the process of change.     

The Usurer's Daughter: Male Friendship and Fictions of Women in Sixteenth-Century England

This article uses a case-study of the relationship between the British suffrage organization, the Women's Social and Political Union, and its equivalent on the Irish side, the Irish Women's Franchise League, in order to illuminate some consequences of the colonial relationship between Britain and Ireland. As political power was located within the British state, and the British feminist movement enjoyed superior resources, the Irish movement was at a disadvantage. This was compounded by serious internal divisions within the Irish movement - a product of the dispute over Ireland's constitutional future - which prevented the Franchise League, sympathetic to the nationalist demand for independence - from establishing a strong presence in the North. The consequences of the British movement organizing in Ireland, in particular their initiation of a militant campaign in the North, are explored in some detail, using evidence provided by letters from the participants.British intervention was clearly motivated from British-inspired concerns rather than from any solidarity with the situation of women in Ireland, proving to be disastrous for the Irish, accentuating their deep-rooted divisions.The overall argument is that feminism cannot be viewed in isolation from other political considerations. This case-study isolates the repercussions of Britain's imperial role for both British and Irish movements: ostensibly with a common objective but in reality divided by their differing response to the constitutional arrangement between the two countries. For this reason, historians of Irish feminist movements must give consideration to the importance of the ‘national question’ and display a more critical attitude towards the role played by Britain in Irish affairs.     

Nocturnal Oviposition Behavior of Forensically Important Diptera in Central England

Timing of oviposition on a corpse is a key factor in entomologically based minimum postmortem interval (mPMI) calculations. However, there is considerable variation in nocturnal oviposition behavior of blow flies reported in the research literature. This study investigated nocturnal oviposition in central England for the first time, over 25 trials from 2011 to 2013. Liver-baited traps were placed in an urban location during control (diurnal), and nocturnal periods and environmental conditions were recorded during each 5-h trial. No nocturnal activity or oviposition was observed during the course of the study indicating that nocturnal oviposition is highly unlikely in central England.