130,782 research outputs found
FIGURE. Basidiocarps of species of Agaricales in Panama. a. Asterophora parasitica (PAN180) on decayed basidiocarp of Russula sp. b–c. Campanophyllum probiscideum. b. On bark of a standing tree (KaiR434). c. From above and below (KaiR434). d–e. Rhodocollybia tablensis. d. (KaiR484). e. (PAN238). f. Cantharocybe brunneovelutina (PAN260). g. Pluteus hongoi (PAN413). h. Tetrapyrgos atrocyanea (KaiR395). Bars a = 1 cm, b, c, f, g = 2 cm, d, e = 5 cm, h = 0.5 cm. a, f, g Photos by H. Lotz-Winter. b, c, d, h Photos by K. Reschke. e Photo by O. Koukol. in New and interesting species of Agaricomycetes from Panama
No full textFIGURE. Basidiocarps of species of Agaricales in Panama. a. Asterophora parasitica (PAN180) on decayed basidiocarp of Russula sp. b–c. Campanophyllum probiscideum. b. On bark of a standing tree (KaiR434). c. From above and below (KaiR434). d–e. Rhodocollybia tablensis. d. (KaiR484). e. (PAN238). f. Cantharocybe brunneovelutina (PAN260). g. Pluteus hongoi (PAN413). h. Tetrapyrgos atrocyanea (KaiR395). Bars a = 1 cm, b, c, f, g = 2 cm, d, e = 5 cm, h = 0.5 cm. a, f, g Photos by H. Lotz-Winter. b, c, d, h Photos by K. Reschke. e Photo by O. Koukol.Published as part of Reschke, Kai, Lotz-Winter, Hermine, Fischer, Christian W., Hofmann, Tina A. & Piepenbring, Meike, 2021, New and interesting species of Agaricomycetes from Panama, pp. 1-26 in Phytotaxa 529 (1) on page 15, DOI: 10.11646/phytotaxa.529.1.1, http://zenodo.org/record/581416
FIGURE. Multiclavula caput-serpentis (KaiR699, holotype). a. Embankment covered by the thallus, with several groups of numerous basidiocarps (arrows). b. Thallus on soil, with a group of basidiocarps. c. Basidiocarps with different shapes, +/- lateral view. d. Basidiocarps from below-lateral. Bars a = 20 cm, b = 1 cm, c, d = 2 mm. Photos by K. Reschke. in New and interesting species of Agaricomycetes from Panama
No full textFIGURE. Multiclavula caput-serpentis (KaiR699, holotype). a. Embankment covered by the thallus, with several groups of numerous basidiocarps (arrows). b. Thallus on soil, with a group of basidiocarps. c. Basidiocarps with different shapes, +/- lateral view. d. Basidiocarps from below-lateral. Bars a = 20 cm, b = 1 cm, c, d = 2 mm. Photos by K. Reschke.Published as part of Reschke, Kai, Lotz-Winter, Hermine, Fischer, Christian W., Hofmann, Tina A. & Piepenbring, Meike, 2021, New and interesting species of Agaricomycetes from Panama, pp. 1-26 in Phytotaxa 529 (1) on page 9, DOI: 10.11646/phytotaxa.529.1.1, http://zenodo.org/record/581416
FIGURE. Microscopic structures of Gliophorus roseus (PAN612, holotype). a. Upper part of pileipellis, gelatinous matrix not indicated. b. Basidiospores. c. Ixo-cheilocystidia in a gelatinous matrix (not indicated). d. Basidia at different developmental stages. Bars = 10 µm. Drawings by K. Reschke. in New and interesting species of Agaricomycetes from Panama
No full textFIGURE. Microscopic structures of Gliophorus roseus (PAN612, holotype). a. Upper part of pileipellis, gelatinous matrix not indicated. b. Basidiospores. c. Ixo-cheilocystidia in a gelatinous matrix (not indicated). d. Basidia at different developmental stages. Bars = 10 µm. Drawings by K. Reschke.Published as part of Reschke, Kai, Lotz-Winter, Hermine, Fischer, Christian W., Hofmann, Tina A. & Piepenbring, Meike, 2021, New and interesting species of Agaricomycetes from Panama, pp. 1-26 in Phytotaxa 529 (1) on page 4, DOI: 10.11646/phytotaxa.529.1.1, http://zenodo.org/record/581416
Recensione di: Markus Gamper / Linda Reschke / Marten Düring (Hg.), Knoten und Kanten III. Soziale Netzwerkanalyse in Geschichts- und Politikforschung. Bielefeld 2015.
No full textToro D. Recensione di: Markus Gamper / Linda Reschke / Marten Düring (Hg.), Knoten und Kanten III. Soziale Netzwerkanalyse in Geschichts- und Politikforschung. Bielefeld 2015. Diacronie. 2016;28(4):4–5
FIGURE. Microscopic structures of Rhodocollybia tablensis a, b, e, f (PAN238), c, d (KaiR343) a. Basidia. b. Basidiospores. c. Cheilocystidia. d. Pleurocystidia. e. Stipitipellis with caulocystidia. f. Pileipellis with terminal cells. Bars a, b and c = 10 µm, d, e and f = 20 µm. Drawings by H. Lotz-Winter. in New and interesting species of Agaricomycetes from Panama
No full textFIGURE. Microscopic structures of Rhodocollybia tablensis a, b, e, f (PAN238), c, d (KaiR343) a. Basidia. b. Basidiospores. c. Cheilocystidia. d. Pleurocystidia. e. Stipitipellis with caulocystidia. f. Pileipellis with terminal cells. Bars a, b and c = 10 µm, d, e and f = 20 µm. Drawings by H. Lotz-Winter.Published as part of Reschke, Kai, Lotz-Winter, Hermine, Fischer, Christian W., Hofmann, Tina A. & Piepenbring, Meike, 2021, New and interesting species of Agaricomycetes from Panama, pp. 1-26 in Phytotaxa 529 (1) on page 16, DOI: 10.11646/phytotaxa.529.1.1, http://zenodo.org/record/581416
MeSH term explosion and author rank improve expert recommendations
No full textInformation overload is an often-cited phenomenon that reduces the productivity, efficiency and efficacy of scientists. One challenge for scientists is to find appropriate collaborators in their research. The literature describes various solutions to the problem of expertise location, but most current approaches do not appear to be very suitable for expert recommendations in biomedical research. In this study, we present the development and initial evaluation of a vector space model-based algorithm to calculate researcher similarity using four inputs: 1) MeSH terms of publications; 2) MeSH terms and author rank; 3) exploded MeSH terms; and 4) exploded MeSH terms and author rank. We developed and evaluated the algorithm using a data set of 17,525 authors and their 22,542 papers. On average, our algorithms correctly predicted 2.5 of the top 5/10 coauthors of individual scientists. Exploded MeSH and author rank outperformed all other algorithms in accuracy, followed closely by MeSH and author rank. Our results show that the accuracy of MeSH term-based matching can be enhanced with other metadata such as author rank
FIGURE. Macro- and microscopic structures of Multiclavula caput-serpentis (KaiR699, holotype). a. Thallus with basidiocarps. b. Basidiospores. c. Hymenium with basidia at different developmental stages and subhymenial hyphae. d. Bulbils of green algae wrapped in hyphae, different developmental stages. Bars a = 2 mm, b, c and d = 10 µm. Drawings by H. Lotz-Winter. in New and interesting species of Agaricomycetes from Panama
No full textFIGURE. Macro- and microscopic structures of Multiclavula caput-serpentis (KaiR699, holotype). a. Thallus with basidiocarps. b. Basidiospores. c. Hymenium with basidia at different developmental stages and subhymenial hyphae. d. Bulbils of green algae wrapped in hyphae, different developmental stages. Bars a = 2 mm, b, c and d = 10 µm. Drawings by H. Lotz-Winter.Published as part of Reschke, Kai, Lotz-Winter, Hermine, Fischer, Christian W., Hofmann, Tina A. & Piepenbring, Meike, 2021, New and interesting species of Agaricomycetes from Panama, pp. 1-26 in Phytotaxa 529 (1) on page 10, DOI: 10.11646/phytotaxa.529.1.1, http://zenodo.org/record/581416
Going Beyond Counting First Authors in Author Co-citation Analysis
No full textThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
"Closing the R&D Gap, Evaluating the Sources of R&D Spending"
No full textBoth spending and tax policies have been implemented in the United States with the goal of stimulating private sector research and development (R&D). Karier questions whether current R&D policy, especially the research and experimentation tax credit, can contribute to closing the gap between nondefense expenditures on R&D in the United States and such expenditures in other countries, such as Japan and Germany. He also explores possible changes to our current R&D policy to make it more effective.
Gliophorus roseus Reschke, C. W. Fisch. & Lotz-Winter 2021, sp. nov.
No full textGliophorus roseus Reschke, C.W. Fisch. & Lotz-Winter, sp. nov. Figs. 1–3 Mycobank MB838253 Diagnosis: —Differs from other species in the genus by basidiocarps with rose, purplish pink to pale violet colour, viscid pileus, stipe surface and lamellar edges, gelatinized subhymenium, absence of clamp connections and ellipsoid to ovoid basidiospores. Etymology: —rosa (Latin) = rose, referring to the colour of the basidiocarps. Type: — PANAMA. Chiriquí Province: near Alto Boquete, Sendero Culebra, N 08°50‘33.9‘‘ W 82°28‘52.1‘‘, 1680 m a.s.l., montane forest dominated by Quercus spp., 17 July 2016, H. Lotz-Winter, O. Koukol, P. Zehnalek PAN612 (holotype UCH 11755, isotype M-0312079)! Description:—Basidiocarps mycenoid to omphalinoid. Pileus 1.0– 2.5 cm diam., broadly convex to convex umbilicate, with straight and crenate margin, central disk rose (13 A 5) to purplish pink (14 A 3–4), sometimes pale violet (15 A 3) to light lilac (15 A 4–5), paler towards margin, pileal surface viscid, translucently striate at the margin up to 2/3 the radius, hygrophanous reaction not recorded. Lamellae decurrent, arcuate, distant, relatively thick, white to greyish white, with intervenose ridges and hyaline, viscid edge. Stipe 2.8–5.5 × 0.15–0.3 cm, cylindrical, cartilaginous, hollow, greyish magenta (13 B 4–5) to purplish red (13 B 6), sometimes lilac (15 B 3–5), at the apex, pinkish white (13 A 2) and paler towards base, often yellowish white, pale yellow to light yellow (3 A 2–4) at the base, with strongly viscid surface, longitudinally striate when moist, at least at the upper third of the stipe. Basal mycelium indistinct. Odour indistinct, taste not tested. Basidiospores 5.0–5.6–6.5(–7.5) × 3.5–3.9–4.5 µm, Q = 1.30–1.43–1.60 (n = 60 spores of 2 specimens), broadly ellipsoid to somewhat ovoid, smooth, hyaline, thin-walled. Basidia (18.5–)20–26(–29) × 4.5–6.0 µm, clavate, hyaline, 4-spored, with up to 12(–20) µm long sterigmata. Lamellar edge sterile and gelatinized, formed by cylindrical-flexuous, hyaline, thin-walled ixocheilocystidia, 15–45 × 1.5–2.0(–2.5) µm, sometimes with a few basidia in between. Lamellar trama subregular, formed by inflated cells, (25–)30–75 × (6–)10–20(–30) µm, hyaline, thin-walled. Subhymenium strongly gelatinized. Pileipellis an ixotrichoderm composed of narrow, cylindrical cells, 15–70 × 1.0–2.0 µm, hyaline, thin-walled, in gelatinous matrix. Pileitrama formed by inflated cells, 35–75 × 12.5–30 µm, hyaline, thin-walled. Stipe surface an ixotrichoderm, similar to the pileipellis. Pigment not located. Sometimes with oleiferous hyphae in lamellar trama. Clamp connections absent from all parts of the basidiocarp. Habitat: —Basidiocarps found in small groups on soil and on rotten wood on the forest floor in Quercus -dominated montane forests between 1700 and 2300 m a.s.l. in Chiriquí, Panama. Notes: — Gliophorus roseus belongs to the section Glutinosae (Kühner 1926: 53) Lodge & Padamsee in Lodge et al. (2013: 45). It is related to G. laetus (Persoon 1799: 48: Fries 1821: 102) Herink (1959: 84), with a p-distance of 7.9, 8.1, and 8.7% in the ITS (FM 208890, KaiR1035, and FM 208887, respectively, compared to KaiR619). This species was described by Persoon (1799) without notes on the collection localities and original material is not preserved. Persoon worked and collected in Göttingen, Central Germany. A strict concept of G. laetus is used here based on own observations in Germany and Austria, as well as the description given by Boertmann (2010). Molecularly, this concept is in agreement to the concept used by Babos et al. (2011) based on material from eastern Europe. Sequences annotated as G. laetus (‚ Hygrocybe laeta ‘) are located at different positions in our phylogenetic analysis and have p-distances of 4.7, 6.0, 6.6, and 8.3% (HQ604792, HM 020692, HM 240529, FJ 627027) compared to G. roseus (KaiR619).Apparently, this name is used for several species in North America. Lodge et al. (2013) mentioned that many of their material of Hygrophoraceae from North America identified with names of taxa described from Europe did not match material and sequences derived from such from Europe. Their sequences annotated as G. laetus formed three clades. Michal Kuo (http://www.mushroomexpert.com/gliophorus_laetus.html, accessed 14 November 2021) presents under the name G. laetus basidiocarps with umbilicate pileus, which is pale yellowish-greyish, with dark orange centre. However, a note is included that G. laetus in its current use possibly represents a species group. Gliophorus laetus s. str. differs from G. roseus by a different habitat in moss-rich grassland, dunes and heaths, in average larger, brownish orange basidiocarps, toruloid clamp connections in the hymenium and the pileipellis, and a rubber-like smell. The yellow variety H. laeta var. flava Boertmann (1995: 86) similarly differs from G. roseus. In addition, it is mainly known from alpine and arctic habitats (Boertmann 2010). Gliophorus glutinosus K. Das, D. Chakr. & Vizzini in Chakraborty et al. (2018: 128), described from India, differs by orange basidiocarps. Clamp connections are absent from the pileipellis of this species, but present in the hymenium and subhymenium. Hygrocybe noelokelani Desjardin & Hemmes (1997: 621), not combined to Gliophorus so far, forms basidiocarps with pink pileus, never with violet tones, and a yellow stipe. Two varieties were described for this species: var. noelokelani differs from G. roseus in addition to the somewhat different colours of the basidiocarps by the presence of clamp connections and larger basidiospores. Hygrocybe noelokelani var. defibulata Desjardin & Hemmes (1997: 623) lacks clamp connections, but differs from the type variety as well as G. roseus by ellipsoid basidiospores with higher Q-values of 1.30–1.55–1.90 (Desjardin & Hemmes 1997). Lodge et al. (2013) stressed the presence of toruloid clamp connections at basidia as one of the characters of species in the sect. Glutinosae, which distinguish them from species in sect. Gliophorus, with regular clamp connections. By the addition of the new species to sect. Glutinosae, but also with regard to Hygrocybe noelokelani var. defibulata, the concept of this section has to be changed to include also species without clamp connections. Nested within the complex of G. laetus, G. roseus and related, unresolved species is a sequence of another specimen collected in Panama (KaiR549). However, the material of this putatively further new species of Gliophorus is insufficient for description. Additional specimen examined: — PANAMA. Chiriquí Province: near Cerro Punta, Entre Ríos, Montaña Azul, montane forest dominated by Quercus spp., 2300 m a.s.l., N 08°53’42.8’’ W 82°34’58.7’’, 21 June 2017, K. Reschke KaiR619 (UCH9222, M-0312080)! Specimen examined of Gliophorus laetus: — GERMANY. Rheinland-Pfalz: near Tiefenbach, Landwiesen, nitrogen-poor grassland, 560 m a.s.l., 27 Oct. 2017, E. Wandelt KaiR1035 (M-0312092)!Published as part of Reschke, Kai, Lotz-Winter, Hermine, Fischer, Christian W., Hofmann, Tina A. & Piepenbring, Meike, 2021, New and interesting species of Agaricomycetes from Panama, pp. 1-26 in Phytotaxa 529 (1) on pages 3-5, DOI: 10.11646/phytotaxa.529.1.1, http://zenodo.org/record/581416
- …
