Detection of Mitragynine in Mitragyna Speciosa (Kratom) Using Surface-Enhanced Raman Spectroscopy with Handheld Devices

A simple, quick, selective, sensitive, and effective field-friendly method capable of being used by nonexperts has been developed for detecting mitragynine in Mitragyna speciosa (kratom) using surface-enhanced Raman spectroscopy (SERS). Over 100 samples and blanks (known to be either positive or negative for the presence of mitragynine) were examined in duplicate using five identical handheld Raman spectrometers, which provided a data set of over 1,000 examinations. Based on the results of these analyses, the method yielded a true-positive rate of 99.3%, a true-negative rate of 97.9%, a false-positive rate of 2.1%, and a false-negative rate of 0.7%. The average minimum detectable concentration (C_m) of mitragynine that reproducibly yielded a match for one of the library spectra on all five instruments was determined to be 342 ng/mL (ppb). This C_m value is a conservative estimate considering that the extraction process was not fully optimized by this study, which was not necessary since the C_m value achieved was well below typical mitragynine concentrations in kratom (1.3–2.3%). The method is ideal (i) for prioritizing samples for additional testing using other more time-consuming laboratory-based techniques needed to detect and quantify mitragynine and (ii) for field use at international mail facility (IMF) satellite laboratories to help interdict kratom and prevent this dangerous product from reaching the U.S. supply chain.     

Applying Moral Foundations Theory to the Explanation of Capital Jurors’ Sentencing Decisions

Abstract

This study applies moral foundations theory to capital juror decision making. We hypothesized that binding moral foundations would predict death qualification and punitive sentencing decisions, whereas individualizing moral foundations would be associated with juror disqualification and a leniency effect. Additionally, we considered whether moral foundations can explain differences in death penalty application between conservatives and liberals. Respondents from two independent samples participated in a mock-juror task in which the circumstances of a hypothetical defendant’s case varied. Results revealed moral foundations were strong predictors of death qualification. The binding and individualizing foundations were related to sentencing decisions in the expected ways. Supporting our contention that moral foundations operate differently across different types of cases, heterogeneity in the effects of moral foundations was observed. Finally, we found support for the hypothesis that the relationship between sentencing decisions and conservatism would be attenuated by moral foundations.     

Speaking of Justice: A Qualitative Interview Study on Perceived Procedural Justice Among Defendants in Dutch Criminal Cases

Qualitative interviews with one hundred defendants in Dutch criminal cases examine whether perceived procedural justice is a relevant concern for defendants, and, if so, which procedural justice components they refer to. The study provides a point of epistemological departure from the quantitative studies dominating the field, as it assessed which components of procedural justice (if any) respondents put forward themselves rather than asking about predetermined procedural justice components. The large majority of respondents mentioned procedural justice issues themselves, and six components were at the core of their procedural justice perceptions: (1) information on which decisions are based, (2) interpersonal treatment, (3) due consideration, (4) neutrality, (5) voice, and (6) accuracy. Although these procedural justice components largely correspond with the literature, respondents thus mentioned some components more often, and others less often, than the literature would suggest. In particular, neutrality plays an important role in the Dutch legal context examined here.     

Reforming Chinese arbitration law and practices in the global economy

In the last 50 years Chinese arbitration law and practices has made significant contributions to the international commercial arbitration and strides to manage the rapidly increasing caseload associated with a period of amazing growth in economic interactions between Chinese and non-Chinese parties. In the global economy there are rooms for further improvement. The paper proposed some ideas on reforming the Chinese arbitration law and practices on the arbitration system regarding the ad hoc arbitration, panel system and tribunal jurisdiction, interim measures of protection, as well as standards for the judicial review on the arbitral awards.     

Child Care Subsidies and Employment Behavior Among Very‐Low‐Income Populations in Three States

Using merged administrative data from welfare reform evaluations in three states, we estimate the effects of child care subsidy use on the length of time it takes for a welfare applicant to move into substantial employment. Findings show that the use of a child care subsidy during an unemployed or marginally employed spell of welfare receipt is associated with between a 0.6 and 1.7 quarter (or 11% to 34%) reduction in the time to substantial employment in two of the three state samples. The positive influence of subsidy use on transitions to substantial employment is strongest for those welfare applicants with the lowest earnings who are mixing welfare and work prior to subsidy receipt.