Multiple stable isotope characterization as a forensic tool to distinguish acid scavenger samples

Acid scavengers are frequently used as stabilizer compounds in a variety of applications. When used to stabilize volatile compounds such as nerve agents, the lower volatility and higher stability of acid scavengers make them more persistent in a post-event forensic setting. Compound-specific isotope analysis of carbon, nitrogen, and hydrogen in three acid-scavenging compounds (N,N-diethylaniline, tributylamine, and triethylamine) were used as a tool for distinguishing between different samples. Combined analysis of multiple isotopes improved sample resolution, for instance differentiation between triethylamine samples improved from 80% based on carbon alone to 96% when combining with additional isotope data. The compound-specific methods developed here can be applied to instances where these compounds are not pure, such as when mixed with an agent or when found as a residue. Effective sample matching can be crucial for linking compounds at multiple event sites or linking a supply inventory to an event.     

How Ideology Fuels Affective Polarization

Scholars have reached mixed conclusions about the implications of increased political polarization for citizen decision-making. In this paper, we argue that citizens respond to ideological divergence with heightened affective polarization. Using a survey experiment conducted with a nationally representative sample of U.S. citizens, we find that increased ideological differences between political figures produce increasingly polarized affective evaluations, and that these differences are especially large among respondents with stronger ideological commitments and higher levels of political interest. We provide further support for these findings in an observational study of citizens’ evaluations of the U.S. Senators from their state. We also find that the polarizing effects of ideological differences can be largely mitigated with biographical information about the public officials, which suggests that the pernicious consequences of ideological polarization can be overcome by focusing on matters other than political disagreement.     

'Just War' or Just War? The Future(s) of a Tradition

The greatest virtue of the just war lies in its ability to pass judgement on war (the announced aims) and its conduct (the adopted strategy). But how coherent is this synthesis of ideas that assumes a unity between force, political expediency and morality? Can individual wars be morally assessed, and how useful is the just war in this respect? This article assesses the modern relevance of the tradition before suggesting directions for further research in the light of the recent Kosovo Crisis.     

CHINA RESPONDS

Imagine the U.S.Government shutting down almost all forms of public transportation,a substantial number of international airline flights,all schools and many businesses during the period between Thanksgiving through the end of the Christmas season and beyond.That is what is currently going on in Wuhan,the epicenter of the novel coronavirus outbreak,with what has become possibly the largest quarantine in human history.     

Knowledge-based management of protected areas and hydropower: the case of Norway

International Environmental Agreements: Politics, Law and Economics - How has ecological knowledge been applied in Norwegian management of hydropower and protected areas? By recognizing a diversity...     

Violent criminals locked up: Examining the effect of incarceration on behavioral continuity

Purpose

The purpose of the current study was to determine whether, and the degree to which, inmates committing specific types of violent crimes in the community were prone to commit acts of violence while incarcerated.

Materials and methods

Data were collected from the Texas Department of Criminal Justice on the prison stock population and a restricted admissions cohort serving time during FY 2008.

Results

After controlling for pre-prison and post-conviction characteristics, crime of conviction retained a modest degree of influence on inmates’ propensity to commit dangerous rule violations in prison. Inmates convicted of assault, robbery and other miscellaneous violent crimes were more likely to commit dangerous rule infractions than inmates convicted of property crimes, supporting the behavioral continuity thesis. Inmates convicted of homicide were no more likely, and those convicted of sexual assault less likely, to commit dangerous rule violations in comparison to those convicted of property crimes.

Conclusions

The findings suggest that researchers and prison officials should not view all inmates convicted of one of a broad category of “violent crimes” in the community as being equivalent in their propensity for violence while incarcerated.     

Underlying Dimensions of DSM-5 Posttraumatic Stress Disorder and Major Depressive Disorder Symptoms

This study examined the relationship between the underlying latent factors of major depression symptoms and DSM-5 posttraumatic stress disorder (PTSD) symptoms (American Psychiatric Association, 2013). A nonclinical sample of 266 participants with a trauma history participated in the study. Confirmatory factor analyses were conducted to evaluate the fit of the DSM-5 PTSD model and dysphoria model, as well as a depression model comprised of somatic and nonsomatic factors. The DSM-5 PTSD model demonstrated somewhat better fit over the dysphoria model. Wald tests indicated that PTSD’s negative alterations in cognitions and mood factor was more strongly related to depression’s nonsomatic factor than its somatic factor. This study furthers a nascent line of research examining the relationship between PTSD and depression factors in order to better understand the nature of the high comorbidity rates between the two disorders. Moreover, this study provides an initial analysis of the new DSM-5 diagnostic criteria for PTSD.     

Devolution as Process: Institutional Structures,State Personnel and Transport Policy in the United Kingdom

Abstract. Devolution has been described as a key ‘global trend’ over recent decades as governments have decentralised power and responsibilities to subordinate regional institutions. UK devolution is characterised by its asymmetrical nature with different territories granted different institutional arrangements and powers. This paper seeks to examine the role of state personnel in mobilising the new institutional machinery and managing the process of devolution, focusing on transport policy. The research presented shows a clear contrast between London and Northern Ireland, on the one hand, and Scotland and Wales, on the other, in terms of the effectiveness of political leaders in creating clear policy priorities and momentum in transport.     

Bibliographies on Korea

Abstract

As Noam Chomsky has pointed out, press accounts about the non-western world, in particular Cambodia, are often as interesting for themselves, as “works of art,” as for information about conditions within the country concerned. For over three years the mainstream western press generally treated the regime of “Democratic Kampuchea” (DK) and its leader, Pol Pot, as very nearly the worst known to human history; and calls for intervention to displace them were heard even from usually responsible quarters. Yet when they finally were displaced, following a war largely provoked by their own actions, and by a polity whose record on human rights had always seemed much better, not only was little rejoicing heard, but the remnants of the DK regime became recipients of recognition and support by the powers who had cried out most loudly against them. Clearly concern with human rights or atrocities was of secondary importance to considerations of international power politics; and if no one was willing to suddenly declare Pol Pot a bulwark of the Free World against Godless Communism, the atrocities over which he had presided tended to be implicitly forgiven as his role in an anti-Vietnamese coalition was emphasized.