Undoing a co-operative bargain: The origins and dissolution of federal accommodation of provincial credit unions

The failure of several U.S. regional banks early in 2023 underlined Canada's reputation as home to a resilient banking sector where federal policymakers guard their jurisdictional responsibility over banking against populist impulses and trade off competition for financial stability. This article argues that conventional explanations for this observed stability are incomplete because they omit any discussion of federal policies that shaped the growth of a $550 billion provincially based credit union system. This article reconciles the resulting puzzle by showing how policymakers accommodated credit unions and used them to channel populist impulses but within the bounds of over-arching financial stability concerns.     

Assassination and the law: A policy memorandum

Normally, assassination is a crime under international law. Yet there are rare, residual circumstances where it may be not only permissible but law enforcing. Insofar as international law is part of United States law, assassination might—in these very extraordinary circumstances—not be unlawful. Drawing on the explicit expectations of international law and the natural law foundations of U.S. municipal law, this article acknowledges that assassination must always be impermissible as an instrument of Realpolitik, but that in a world that continues to confront innocent populations with terrible harms (terrorism, war, genocide) assassination does have a proper place. Throughout this examination, philosophical and jurisprudential perspectives are fused with both pertinent tactical considerations and utilitarian calculations.     

Chemical identification and optimization of the 4-aminophenol colorimetric test for the differentiation between hemp-type and marijuana-type cannabis plant samples

The 4- Aminophenol (4-AP) colorimetric test is a fast, easy-to-use, and cost-effective presumptive assay of cannabis plant material producing different chromophores with THC-rich cannabis (blue color) and with CBD-rich cannabis (pink color). The main drawback of the 4-AP test is a brief observation window where the color rapidly changes to black, limiting the utility of the test. We now report for the first time, the identification of the product chromophores between 4-AP and CBD/THC as well as propose an explanation and a solution for the color degradation of the chromophores. The identification of the chromophores is provided by spectroscopic (UV–Vis), chromatography, and mass spectrometry (TLC and LC-QToF-MS). Oxidation of excess 4-AP (Reagent A) in the presence of NaOH (Reagent B) produces the black color observed for the previously reported 4-AP tests and reported in the literature. The adjustment of reactants concentrations and volumes of 4-AP:THC/CBD to a 1:1 ratio significantly reduces the black oxidation by-product and increases the observation window up to 2 h instead of the previously reported 5–10 min. For the first time, mass spectrometry and chromatography confirmed that the reaction of THC and CBD with 4-AP produced chromophores with m/z (M + H) = 420, consistent with proposed indophenol structures. The TLC method developed confirmed the separation between CBD and THC chromophores. The specificity of the test is also reported, showing false positive results for the presence of THC (blue color) for samples of thyme and oregano. LDA and SIMCA models showed that the optimized 4-AP procedure performs better than the previously reported 4-AP color test.     

Evaluating the Accuracy of Cranial Indices in Ancestry Estimation Among South African Groups

Historically, population differences were quantified using cranial indices. Even though the application of indices is associated with numerous statistical and methodological problems, the use of cranial indices to estimate ancestry persists as demonstrated by its inclusion in several recent papers and conference presentations. The purpose of this study was to classify 207 South African crania and compare the results of five standard cranial indices to linear discriminant analysis (LDA). New sectioning points were created to contend with low classification accuracies (40–79%) and possible secular trends. Although the accuracies of the new sectioning points increased (66–87%), the accuracies associated with the stepwise LDA were higher (84%) and could classify the crania into one of the three South African groups. The results of the study demonstrate that indices cannot compete with multivariate techniques and should not be used in forensic anthropological analyses for ancestry estimation.