Both sexes of Achalcus bicolor sp.n., Achalcus longicercus sp.n., and Australachalcus latipennis sp.n. are described as additions to the Nearctic achalcine fauna. Diagnoses of five unnamed Achalcus species represented only by females are given. A key to Nearctic males and females including 10 unnamed species is provided. The new Achalcus records considerably extend the known distribution of the genus in North America, especially in the central and eastern states. Australachalcus latipennis sp.n. is the first known Nearctic species of this predominantly Neotropical and New Zealand genus. Achalcus bicolor sp.n. from Montana, Manitoba and Ontario clearly belongs to the Achalcus flavicollis species group. The eastern Achalcus longicercus sp.n. is not included in the latter species group due to the lack of a dorsal bristle on tibia I and the absence of a preapical anterodorsal bristle on femur III in both sexes. It features postgonites with strong hook-like apical processes possibly unique to this species. The presence and number of dorsal bristles on tibia I seem to be of both diagnostic and phylogenetic relevance. All northern achalcine species were collected between June and September, whereas some Californian species were taken in May and Australachalcus latipennis sp.n. from Arizona in October - November.
Chartrand et al. (2004) have given an upper bound for the nearly antipodal chromatic number ac′ (Pn) as (n−2 2 ) + 2 for n ≥ 9 and have found the exact value of ac′ (Pn) for n = 5, 6, 7, 8. Here we determine the exact values of ac′ (Pn) for n ≥ 8. They are 2p 2 − 6p + 8 for n = 2p and 2p 2 − 4p + 6 for n = 2p + 1. The exact value of the radio antipodal number ac(Pn) for the path Pn of order n has been determined by Khennoufa and Togni in 2005 as 2p 2 − 2p + 3 for n = 2p + 1 and 2p 2 − 4p + 5 for n = 2p. Although the value of ac(Pn) determined there is correct, we found a mistake in the proof of the lower bound when n = 2p (Theorem 6). However, we give an easy observation which proves this lower bound.
For an abelian lattice ordered group G let conv G be the system of all compatible convergences on G; this system is a meet semilattice but in general it fails to be a lattice. Let and be the convergence on G which is generated by the set of all nearly disjoint sequences in G, and let a be any element of conv G. In the present paper we prove that the join and V a does exist in conv G.
The neutron time-of-flight spectrometer (NEAT) at Helmholtz-Zentrum Berlin has a long history of successful application for studying dynamics and function over very broad time and space domains ranging from 10-14 to 10-10 seconds and from 0.05 up to approximately 5 nanometres, respectively. Started originally in 1995 as NEAT I, NEAT II has been fully rebuilt in order to address the needs of the user community for more powerful instruments. From the end of January 2017 researchers from all over the world will be able to investigate the structure and dynamics of substances, including under extreme conditions., Veronika Grzimek, Gerrit Günther, Margarita Russina:., and Obsahuje seznam literatury
Lyellův syndrom (syndrom toxické epidermální nekrolýzy) je raritně se vyskytující onemocnění, které poprvé popsal skotský lékař Alan Lyell v roce 1956. Je charakterizováno rozsáhlou kožní a slizniční nekrolýzou postihující minimálně 30 % tělesného povrchu a systémovými projevy. Podle četnosti výskytu se jedná o extrémně vzácnou nozologickou jednotku s incidencí 0,5–1,5/1 milion obyvatel a rok. Leyllův syndrom je považován za toxoalergickou reakci, spouštěčem je nejčastěji některé léčivo. Syndrom je spojen s vysokou letalitou (knižně udávanou v rozmezí 30–90 %). Neodkladná lokální i celková léčba na jednotkách intenzivní péče nebo na specializovaném pracovišti může zlepšit celkově špatnou prognózu pacientů. V naší kazuistice popisujeme vzácný případ pacienta s rozvojem Lyellova syndromu po práci s běžným fungicidním prostředkem, který je častou součástí vybavení zahrádkářů a zemědělců. Klíčová slova: bis-dithiokarbamidany – Leyllův syndrom – toxická epidermální nekrolýza, Leyll’s syndrome (syndrome of toxic epidermal necrolysis) is a rare disease, firstly described by Scottish doctor of medicine Allan Lyell in 1956. It is characterized by huge skin and mucosa necrolysis, which affects at least 30 % of body surface, and systemic symptoms. According to the frequency of the occurrence it is an extremely rare condition, with an incidence of 0.5–2 cases per million residents per year. Leyll’s syndrome is considered as a toxoallergic reaction, triggered mostly by some medication and it is associated with a very high mortality rate (in the literature reported between 30 to 90 %). Adequate and timely local and systemic treatment at the Intensive Care Unit or at the specialized clinic can improve the overall poor prognosis of the patients. In our case report we describe a very rare case of the Lyell’s syndrome after exposure to the antifungal organosulfur compound, which is widely used by the homegardners and farmers. Key words: bis-dithiocarbamates – Leyll’s syndrome – toxic epidermal necrolysis, and Ján Csomor, Bohuš Bunganič, Sergey Zakharov, Igor Pafčuga, Pavel Sedloň, Petr Urbánek
Předkládáme kazuistiku třináctileté pacientky somálského původu, která byla přijatá na naše pracoviště pro měsíc trvající B symptomy a prokázanou břišní lymfadenopatii jako suspektní lymfom. Vstupní vyšetření prokázalo pozitivitu Mantoux testu, přestože pacientka nepodstoupila BCG vakcinaci. Histopatologické vyšetření bioptované ileocékální uzliny potvrdilo zánětlivý granulomatózní proces s kaseózní nekrózou, mikrobiologické vyšetření včetně klasické kultivace prokázalo mycobacterium tuberculosis. Diagnóza byla uzavřena jako střevní forma TBC a pacientku jsme přeložili na pracoviště specializované pro léčbu dětské formy TBC., We report a case of a 13-year-old girl of Somali origin who was admitted for suspected lymphoma. She had developed typical B symptoms and abdominal lymphadenopathy within the passed month. Though the patient has never undergone BCG vaccination, the Mantoux skin test was positive. The girl underwent an ileocaecal lymph node biopsy – histopathological findings showed granulomatous inflammation with caseation necrosis and mycobacterium tuberculosis was culture-confirmed from the examined tissue. Diagnosis of abdominal TB was assessed and the girl was sent to a pediatric department specialized in the treatment of childhood TB., Lucie Cingrošová, Lenka Mrázková, Marcela Dvořáková, Luboš Zeman, Josef Mališ, Jiřina Hobstová, Pavel Dryák, Vít Campr, Jan Starý, and Lit.: 7