Limits on the production of scalar leptoquarks from Z (0) decays at LEP

A search has been made for pairs and for single production of scalar leptoquarks of the first and second generations using a data sample of 392000 Z0 decays from the DELPHI detector at LEP 1. No signal was found and limits on the leptoquark mass, production cross section and branching ratio were set. A mass limit at 95% confidence level of 45.5 GeV/c2 was obtained for leptoquark pair production. The search for the production of a single leptoquark probed the mass region above this limit and its results exclude first and second generation leptoquarks D0 with masses below 65 GeV/c2 and 73 GeV/c2 respectively, at 95% confidence level, assuming that the D0lq Yukawa coupling alpha(lambda) is equal to the electromagnetic one. An upper limit is also given on the coupling alpha(lambda) as a function of the leptoquark mass m(D0)

In children with bronchial asthma: Causal, complicated, unspecified, reverse

The review, based on modern literature data and the results of many years of research conducted by the authors, highlights the problem of comorbidity (multimorbidity) in children with bronchial asthma (BA). There is a grouping of concomitant diseases in children with asthma depending on the type of comorbidity (causal, complicated, unspecified, reverse). Based on epidemiological data, observational and cohort studies, systematic reviews and meta-analyses, information on the frequency of BA in children with various comorbid diseases and comorbid diseases in children with BA was summarized. Scientific, theoretical and practical significance of comorbidity in BA, diagnostic and treatment programs in pediatric patients suffering from BA and comorbid diseases are substantiated. © 2021, Pediatria Ltd.. All rights reserved