The nucleotide sequences of blaLCR-1 and blaOXA-5 beta-lactamase genes have been determined. Polypeptide products of 260 and 267 amino acids with estimated molecular masses of 27 120 Da and 27,387 Da were obtained for the mature form of LCR-1 and OXA-5 proteins. A progressive alignment was used to evaluate the extent of identity between LCR-1 and OXA-5 with 29 other beta-lactamase amino acid sequences. The data showed that both belong to class D. We identified amino acids conserved in 24 positions for class A beta-lactamases and in 28 positions for five class D enzymes. The structural similarities between class A and class D beta-lactamases are more extensive than indicated by earlier biochemical studies with overall 16% identity between both classes. From the alignment, dendograms were constructed with a distance-matrix and parsimony methods which defined three major groups of proteins subdivided into clusters giving insight on beta-lactamase phylogeny and evolution.

The widespread adoption of emergency powers during Covid-19 raises important questions about what constitutes a (un)democratic response to crises. While the institutions and practices of democracy during normal times are well established, democratic standards during emergencies have yet to be conceptualized in the literature. This makes it difficult to systematically answer questions like - How do states' responses to Covid-19 violate democratic standards? Do such violations make states' responses more effective? Drawing on international treaties, norms, and academic scholarship, we propose a novel conceptualization of democratic standards for emergency measures. We then identify which government responses to Covid-19 qualify as a violation of democratic standards within the framework of illiberal and authoritarian practices, introducing a dataset covering 144 countries from March 2020 onward. In this article, we provide an overview of the extent to which states violated democratic standards in their response to Covid-19 during 2020. We find no relationship between violations of democratic standards and reported Covid-19 mortality. Illiberal and authoritarian practices in response to the Covid-19 pandemic do not correlate with better public health outcomes. Rather, such crisis-driven violations should be carefully observed as they could signal autocratization.

We consider reheating after inflation in theories with a non-standard kinetic term. We show that the equation that exhibits parametric resonance is the Hill-Whittaker equation, which is a particular case of the more general Hill equation. This equation is in general more unstable than the Mathieu equation, such that narrow resonance preheating may be efficient in theories with a non-canonical kinetic term.

as well as V-Dem country managers for their invaluable support and input. We are also grateful for helpful comments by Alexander Dukalskis and participants of the APSA and ECPR General Conferences in 2020.

The International Contact Dermatitis Research Group proposes a classification for the clinical presentation of contact allergy. The classification is based primarily on the mode of clinical presentation. The categories are direct exposure/contact dermatitis, mimicking or exacerbation of preexisting eczema, multifactorial dermatitis including allergic contact dermatitis, by proxy, mimicking angioedema, airborne contact dermatitis, photo-induced contact dermatitis, systemic contact dermatitis, noneczematous contact dermatitis, contact urticaria, protein contact dermatitis, respiratory/mucosal symptoms, oral contact dermatitis, erythroderma/exfoliative dermatitis, minor forms of presentation, and extracutaneous manifestations.