7,878 research outputs found
A note on Valeriana jatamansi Jones (Caprifoliaceae s.l.)
The tangled arguments around the names of jatamansi drug plants are examined and the correct synonymies and typifications for Nardostachys jatamansi (D.Don) DC. and V. jatamansi Jones (both Caprifoliaceae s.l.) are provided. The conservation status of the former, and the need for further work on the subject, is briefly discussed
S.L. Smith, mine accountant
Photo shows S.L. Smith, the accountant of Hedley Gold Mining Company, photo is from a booklet honouring Gomer and Mrs Jones reception
Architectural illustrations... 1899
Architectural illustrations / A.W. Leh. [s.l.] : The author, 1899. 1 leaf, 23 plates ; 21 x 29 cm
Falsely elevated serum tobraycin levels in a patient receiving nebulised tobramycin
AbstractIt is common when treating patients with respiratory exacerbations of cystic fibrosis to use both nebulised and intravenous antibiotics. Aminoglycoside drug levels are often measured from finger-prick blood samples. We describe a case of a 14-year-old girl treated simultaneously with IV and nebulised tobramycin in whom drug levels, measured from finger prick blood samples, were erroneously high due to finger contamination by the nebulised drug. Special precautions or direct venepuncture is essential when assessing antibiotic levels in such patients
Improving the management of Japanese knotweed s.l.: a response to Jones and colleagues
In a recent paper, Jones et al. (2020a) claimed that we recommended the use of mowing for the "landscape management of invasive knotweeds" in an article we published earlier this year (i.e. Martin et al. 2020), a recommendation with which they strongly disagreed. Since we never made such a recommendation and since we think that, in order to successfully control invasions by Japanese knotweed s.l. taxa (Reynoutria spp.; syn. Fallopia spp.), stakeholders need to acknowledge the general complexity of the management of invasive clonal plants, we would like to (i) clarify the intentions of our initial article and (ii) respectfully discuss some of the statements made by Daniel Jones and his colleagues regarding mowing and knotweed management in general. Although we agree with Jones et al. that some ill-advised management decisions can lead to "cures worse than the disease", our concern is that the seemingly one-sided argumentation used by these authors may mislead managers into thinking that a unique control option is sufficient to tackle knotweed invasions in every situation or at any given spatial scale, when it is generally admitted that management decisions should account for context-dependency (Wittenberg and Cock 2001; Pyšek and Richardson 2010; Kettenring and Adams 2011)
Festuca ovina L., s.l. en Festuca rubra L., s.l. in Nederland
The author gives a survey of the taxa belonging to Festuca ovina L., s.l. and F. rubra L., s.l. as they occur in the Netherlands. Four species are distinguished, viz. F. ovina L., F. trachyphylla (Hack.) Kraj., F. heterophylla Lamk., and F. rubra L. F. ovina L. is represented by 3 subspecies, subsp. tenuifolia (Sibth.) Čelak., subsp. ovina, and subsp. cinerea (Vill.) Duyfjes, nov. comb.; F. rubra L. can be subdivided into 2 subspecies, subsp. rubra and subsp. juncifolia (St. Am.) R. Lit.
Of these taxa F. heterophylla is most probably introduced with grass-seeds; the others are native
A hypothesis: antenatal sensitisation to respiratory syncytial virus in viral bronchiolitis
Aim:
To investigate the possibility of antenatal sensitisation to respiratory syncytial virus (RSV). METHODS:
A total of 36 cord blood specimens were obtained from newborn infants; serum IgA was measured to exclude maternal blood contamination. Cord peripheral blood mononuclear cells were separated and cultured in the presence of either uninfected negative control cells or cells containing ultraviolet (UV) inactivated RSV. Proliferation was assessed by tritiated thymidine incorporation. Supernatant cytokine concentrations were measured using ELISA. RESULTS:
Significantly higher proliferative response rates to UV inactivated RSV were shown in those infants exposed in utero to the RSV epidemic after 22 weeks gestation. UV inactivated RSV stimulation induced significantly higher interferon gamma production from specimens with a positive proliferative response (sensitised) than from those with a negative response (not sensitised). CONCLUSIONS:
Antenatal sensitisation to RSV occurs in one third of infants exposed to an RSV epidemic at the appropriate time of gestation. This sensitisation is associated with increased interferon gamma production, suggesting a type 1 memory response. We hypothesise that priming of fetal T cells to RSV results in a reduced severity of subsequent RSV disease in these individuals and that this will explain much of the clinical diversity of RSV disease
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