Separation and Detection of Smokeless Powder Additives by Ultra Performance Liquid Chromatography with Tandem Mass Spectrometry (UPLC/MS/MS),

A reversed phase gradient ultra performance liquid chromatography tandem mass spectrometry (UPLC/MS/MS) method has been developed for the analysis of smokeless powders. A total of 20 different components were separated by UPLC and detected by MS/MS in multiple reaction monitoring (MRM) mode. These compounds included diphenylamines, centralites, nitrotoluenes, nitroglycerin, and various phthalates. Simultaneous positive and negative electrospray ionization (ESI) was used along with negative atmospheric pressure chemical ionization (APCI) to detect all compounds in a single analysis. Analysis times were under 8 min with a gradient of 10–73% organic at a flow rate of 0.500 mL/min. With this method, ultraviolet and MRM limits of detection ranging from 0.08 to 2.6 ng and 0.4–64 ng injected were achieved. Commercially available smokeless powders were also extracted with methylene chloride and characterized using the developed UPLC/MS/MS method. The procedure permits the determination of compositional differences between different brands as well as lot‐to‐lot variations.     

The Change Imperative: Creating the Next Generation NGO

The Change Imperative: Creating the Next Generation NGO by Paul Ronalds, Kumarian Press, Sterling, VA, 2010, ISBN: 9781565493254, 232 pp.     

An evaluation of Pakistan's third five year plan

The decline in the share of agriculture and increase in secondary production's share have generally been found to accompany changes in per capita income. Cross‐section data have long exhibited such a ‘pattern of development’. Recent panel information combining cross‐section and time‐series data seemed to extend the behaviour to time series. Using analysis of co‐variance tests for such patterns over time, the paper rejects the assumption of homogeneous patterns over time. In addition 45 per cent of the individual countries deviate from the expected time series pattern. Thus such patterns certainly do appear in cross‐sections, but their existence across countries over time is not confirmed.     

Trading culture for development: assessing perceptions among rural agropastoral peoples in Tanzania

Development in rural parts of Africa is strongly desired by local people. Other views expressed by local people towards outside development initiatives vary considerably. Some perceptions are negative, as development recipients view development as a destructive agent of change in the local culture. Despite the negative effects associated with development, this study documented a unanimous desire among a stratified random sample of 418 respondents for more development interventions. Two villages in south-central Tanzania were selected based upon their adjacent proximity to Ruaha National Park. Findings suggest that a capability framework is useful for exploring local perceptions to outside development assistance.     

Three Prompts for Collective Action in the Context of Digital Media

Research dealing with the nexus of collective action, political participation, and digital media confronts three challenges: conceptualizing digital media as an influence on human behavior, finding common ground among new theories, and connecting together individual-level models with structural-level theories. This article addresses these challenges as a theoretical undertaking. It argues that the digital media environment should be understood as a change in the context for action rather than as an individual-level variable, and that this changed context is relevant to behavior because it expands opportunities for action. This expansion involves a range of structural possibilities for viable collective action that entail at least three paths: organizational prompts, social prompts, and self-initiation. There are theoretical reasons to expect that individual-level attributes including age, education, ideology, and personality may differentially affect people’s susceptibility to these prompts. Future research may profit from refinements to behavioral models that account for possible differences across structurally different prompts for action.