134,955 research outputs found
El Memorial de Gonzalo Solís de Merás sobre la conquista de Florida: problemas de autoría y redacción
No full textThis article examines the so-called Memorial by Gonzalo Solís de Merás to argue that it is impossible for this person to have been its author, at least not by himself. The attribution of the Memorial to Solís de Merás, based on a single reference from the beginning of the 18th Century, is refuted by the narrative, in which the author is never mentioned and there are no references in the first person. More important is the fact that the supposed author of the text, often pictured by critics writing his Memorial in the aftermath of the events, could not have been a witness to any of the episodes narrated in the last three-quarters of the chronicle.En el presente artículo se lleva a cabo un análisis del llamado Memorial de Gonzalo Solís de Merás para argumentar que es imposible que dicha persona fuese, al menos en solitario, su autor. La atribución a Solís de Merás, basada en una única referencia de principios del siglo XVIII, viene desmentida por la propia narrativa, donde no aparece ni una sola mención al autor ni hay referencias en primera persona. Más importante es el hecho de que el supuesto autor, a quien la crítica ha imaginado escribiendo el Memorial sobre el terreno y a raíz de los sucesos, no pudo ser testigo de los eventos acaecidos en las últimas tres cuartas partes de la obra
CAJA 221 - LEGAJO IX - SIGNATURA 02
No full textNota de agradecimiento, remitida por D. Prudencio Solís a la Sociedad Económica, por el nombramiento de socio numerario con el que ha sido honrado.Solís Y Miguel, P. (1882). Nota de agradecimiento, remitida por D. Prudencio Solís a la Sociedad Económica, por el nombramiento de socio numerario con el que ha sido honrado. Real Sociedad Económica de Amigos del País de Valencia. https://riunet.upv.es/handle/10251/24662Importación Masiv
Orientatractis brycini González-Solís & Mariaux, 2017, sp. nov.
No full textOrientatractis brycini sp. nov. Figs 1-3 Deposition of specimens: Holotype (MHNG- INVE-91071), allotype (MHNG-INVE-91072) and paratypes (MHNG-INVE-91073) in the Muséum d’histoire naturelle, Geneva. – Paratypes in the Helminthological Collection of the Institute of Parasitology, Biology Centre, Czech Academy of Sciences, Č eské Bud ĕ jovice (Cat. No. N-1072). Type host: Brycinus macrolepidotus Valenciennes (Alestidae, Characiformes) (Body length 21.4 cm). Other host: Xenocharax spilurus Günther (Distichodontidae, Characiformes) (Body length 15.5-20.2 cm). Site of infection: Intestine. Type locality: Bridge on Ogooué River, Haut-Ogooué, Gabon (01°38’24”S; 13°31’48”E; elev. 300 m), collected on 28/11/2010. Other localities: Mpassa River, near Hotel Poubara, Franceville, Haut-Ogooué, Gabon (01°37’12”S; 13°36’00”E; elev. 300 m), 30/11/2010. Prevalence and intensity: Brycinus macrolepidotus: prevalence 25% (1 fish infected/4 examined), mean intensity 24 nematodes (range 24). Xenocharax spilurus: 43% (3/7), 4.3 (2-8). Etymology: The specific name relates to the generic name of the fish host (i.e., Brycinus). Description General: Whitish, small-sized nematodes, with cuticle finely transversely striated. Anterior end rounded, posterior end with very slender, long, pointed tail (Fig. 1 A, E). Oral opening rhomboid or quadrangular, with 2 lateral and 4 submedian poorly-developed lips (Figs 1 D, 2A, B). Each submedian lip bearing one large spherical papilla and external pair of well-sclerotized, recurved, pointed spines joined at the base and a single large median spine. Lateral lips supporting large amphids; two small spines posterior to each amphidial pore present (Figs 1 D, 2A-D). Lateral grooves extending from first third of esophagus to posterior end of body, but not reaching tail tip (Figs 1 E, G, 2F). Esophagus divided in a cylindrical corpus, elongated isthmus, and posterior, well-developed, valved bulb (Fig. 1 A, B). Nerve ring surrounding isthmus at its anterior end. Deirids small, knob-like, somewhat anterior or at level of nerve ring (Figs 1 A, B, 2E). Excretory pore anterior to esophageal bulb (Fig. 1 A, B). Intestine straight. Rectum a hyaline tube. Male (22 specimens, measurements of holotype in parentheses): Length of body 2.58-3.07 (3.04) mm, maximum width 52-93 (72). Length of corpus 130- 163 (150), of isthmus 289-346 (305); entire esophagus 436-507 (455). Width of esophageal bulb 33-47 (43). Nerve ring, excretory pore, and deirids 162-226 (178), 294-350 (310), and 175-199 (189), respectively, from anterior end of body. Eight pairs of caudal papillae: 1 subventral precloacal pair, 3 subventral adcloacal pairs, close to each other (one pair anterior to cloacal opening, one at same level and one posterior to it), 4 postcloacal pairs (first pair of postcloacals lateral, second and third pairs subventral and close to each other, fourth pair subdorsal) (Figs 1 G, 3A). Pair of small, lateral outlets (probably representing phasmids) between pairs 3 and 4 of postcloacals (Fig. 3 A, E). Single left-shifted papilla on anterior cloacal lip weakly-developed (Fig. 3 C, D). Spicules unequal, similar, well-sclerotized. Left and right spicules 130-158 (148) and 75-90 (83) long, respectively. Both spicules with transverse striations along their lengths; proximal ends slightly expanded, distal ends sharply pointed (Fig. 1 G, H). Gubernaculum 29-39 (37) long, well-sclerotized, proximal end rounded, with deep depression; distal end pointed and slightly ventrally curved (Fig. 1 F). Tail 207-257 (229) long, with dorsal groove-like structure (Fig. 3 B). Female (13 gravid specimens; measurements of allotype in parentheses): Length of body 2.50-3.61 (3.30) mm, maximum width 60-129 (109). Length of corpus 126-170 (161), of isthmus 294-355 (318); entire esophagus 443- 509 (479). Width of esophageal bulb 34-50 (43). Nerve ring, excretory pore, and deirids 158-221 (217), 292-347 (331), and 196-205 (-), respectively, from anterior end of body. Vulva with anterior lip slightly elevated, near the posterior end of body, 2.19-3.18 (2.91) mm from anterior end of body, somewhat anterior to anal opening (Figs 1 E, 3F). Distance anus-vulva 39-72 (44). Vagina muscular, anteriorly directed. Uterus containing fully developed larvae 673-1 176 (927) long; some females with developing eggs 236-305 × 93-110 (236-242 × 93- 94). Tail 270-388 (348) long, with pore-like phasmids between first and second thirds of tail length (Fig. 1 E). Remarks Petter (1966) erected the genus Orientatractis to allocate nematodes with a particular structure of the oral opening, specifically the presence of symmetrical groups of 3 sclerotized posteriorly directed spines surrounding mouth. Currently, this genus includes 7 valid species, namely: O. asymmetrica Gibbons & Platt, 2006 in Rhinoclemmys pulcherrima Gray (Testudines) from Costa Rica, O. campechensis González-Solís & Moravec, 2004 in Paraneetroplus bifasciatus (Steindachner) (reported as Vieja bifasciata) and Cichlasoma pearsei (Hubbs) (both Perciformes) from Southern Mexico, O. chiapasensis González-Solís & Moravec, 2004 in Theraps intermedius (Günther) (reported as Vieja intermedia) and Tomocichla tuba (Meek) (both Perciformes) from Southern Mexico, O. hamabatrachos Bursey, Goldberg & Kraus, 2014 in Austrochaperina basipalmata (van Kampen) (Anura) from New Guinea, O. levanhoai (type species) in Indotestudo elongata (Blyth) (reported as Testudo elongata) (Testudines) from Vietnam, O. leiperi Buckley, 1969 in Podocnemis vogli Müller (Testudines) from Colombia, and O. mekongensis Moravec, Kamchoo & Pachanawan, 2015 in Pangasius bocourti Sauvage (Siluriformes) from Thailand (Petter, 1966; Buckley, 1969; González-Solís & Moravec, 2004; Gibbons & Platt, 2006; Bursey et al., 2014; Moravec et al., 2015). Even though the type species of the genus was not reviewed, we decided to emend the generic diagnosis, based on the already described species and present data, since several important features were not included in the original description (see Petter, 1966). Morphological features as the structure of the oral opening, presence of deirids, among others, were incorporated to the diagnosis for making it easier to distinguish Orientatractis from closely related genera (e.g., Klossinemella and Paraorientatractis) within the Atractidae. Thus, Orientatractis and Paraorientractis have four bicornate submedian structures surrounding mouth, whereas Klossinemella shows eight pairs; the two first genera differ in the number of lips (6 vs. 4) and presence of ornamentations on the dorsal surface of body in Paraorientatractis. These changes do not modify the systematic position of the genus. The four bicornate structures along with a pair of spines posterior to amphidial pore are only present in O. brycini sp. nov., O. hamabatrachos, and O. leiperi; while in O. asymmetrica, O. campechensis, O. chiapasensis, O. levanhoai, O. mekongensis are lacking. Orientatractis brycini sp. nov. shows similar body length to that of O. chiapasensis, and is near the lower size range of O. campechensis, O. leiperi and O. levanhoai, whereas the remaining three species (O. asymmetrica, O. hamabatrachos, O. mekongensis) have larger bodies. However, O. brycini sp. nov. differs from all species within the genus in the size of both spicules (except in O. hamabatrachos), gubernaculum and number and distribution of caudal papillae (see Table 1). The new species shares some similarities with Paraorientatractis semiannulata Gibbons, Khalil & Marinkelle, 1997, a nematode of Podocnemis unifilis Troschel (Testudines) in Brazil (Gibbons et al., 1997). Both species harbour identical shape and structures surrounding mouth, such as each submedian lip with a pair of recurved pointed spines and single median spine near their distal margin, along with a pair of smaller spines posterior to amphidial pores. Moreover, both have two unequal, striated spicules, similar gubernaculum and number of caudal papillae. However, they differ in the ornamentations on the dorsal surface of body and striated, broad, well-developed lateral alae in P. semiannulata. Caballero-Rodríguez (1971) described Proatractis parvicapiticoronata from the tortoise Staurotypus triporcatus in Veracruz, Mexico. Later, this species was transferred to Klossinemella as K. parvicapiticoronata by Moravec & Thatcher (1997). González-Solís & Moravec (2004) stated that it probably belongs to Orientatractis according to the shape of spicules, number and distribution of caudal papillae and structure of the anterior end, but until the type material of K. parviticoronata is re-examined, it should be retained within the genus Klossinemella. * pairs of caudal papillae (without considering phasmids): precloacal: adcloacal: postcloacal + single median papilla (left-shifted in O. brycini sp. nov.) Interestingly, O. brycini sp. nov. was found in two fish species of the order Characiformes, but from different families (Alestidae and Distichodontidae) and sampling localities (Ogooue and Mpassa). Despite this, there were no differences in the morphology and biometrical values among the nematodes from both hosts, although certain morphometric variability always occurs intraspecifically. Such morphological and biometrical variability which might be associated with local ecological conditions and physiological traits of host species is not uncommon (see González-Solís & Moravec, 2004). Nothing is known about the life cycle of these nematodes, but as in other members of Atractidae, larvae develop to the third stage in uterus, thus auto-infection is possible (Anderson, 2000). Viviparity has greatly helped atractid nematodes to parasitize several unrelated vertebrates (i.e., turtles, fish, amphibians, grazing mammals) by venereal and oral transmission (Baker, 1982), and to be distributed in different zoogeographical regions (America and Indonesia). The present finding represents the eighth species in the genus Orientatractis and the fourth being reported from fish hosts, since other members were reported in tortoises (O. levanhoai, O. leiperi), frog (O. hamabatrachos), and turtle (O. asymmetrica). This is also the first record of a species of Orientatractis in Africa, which expands the geographical distribution of the genus, since it was previously reported from Costa Rica, Colombia, Mexico (American continent), Thailand, Vietnam (Southeastern Asia) and New Guinea (Melanesia).Published as part of David González-Solís & Jean Mariaux, 2017, Orientatractis brycini sp. nov. (Nematoda: Atractidae) from characiform freshwater fishes in Gabon, Africa, pp. 1-8 in Revue suisse de Zoologie 124 (1) on pages 2-7, DOI: 10.5281/zenodo.32265
η-η′ mixing determination from semileptonic D+ (s) and B+ meson decays
No full textTreballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Curs: 2025, Tutor: Sergi Gonzàlez-Solís de la FuenteIn this work, we determine the degree of mixing of the η and η′ mesons from the exclusive semileptonic D+
(s) → η(′)ℓ+νℓ and B+ → η(′)ℓ+νℓ decays. A controlled parametrization of the participating hadronic form factor, D(s) → η(′) and B → η(′), in combination with experimental measurements, has allowed us to determine ϕ = 40.6(4.8)◦ and ϕ = 42.3(3.7)◦ from the analyses of differential decay width distributions and ratios of branching ratios, respectively. Our results are in good agreement with a recent determination from the Lattice QCD Extended Twisted Mass Collaboration, ϕ = 39.3(2.0)◦, and larger than the naive estimate we calculate from Chiral
Perturbation Theory at leading order ϕ = 33.5◦
Poesías de D. Alfonso de Solís y Wiñacowrt, Duque de Montellano
No full textTítulo de la anteportada: Poesías del Duque de MontellanoMarca tipográfica en portadaSign.: a-b4, c5, d-x4, y2AnteportadaLa hoja de lámina es grabado calcográfico: "Josef Maea lo inv. y dib. B. Vazqz. lo gº
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
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.
Holothuria (Selenkothuria) carere Honey-Escandón, Solís-Marín & Laguarda-Figueras, 2011, n. sp.
No full textHolothuria (Selenkothuria) carere n. sp. Honey-Escandón & Solís-Marín Figs 1–3 Material examined. Holotype UNAM – ICML. 5.179.0. Total length 90 mm (measured along the outside of curved body), January 21, 2010. Collected in Cerritos, Mazatlán, Sinaloa, México (23 ° 18.524 ’N, 106 ° 29.584 ’W) at 0–1 m depth by F. A. Solís-Marín and Q. Hernández Díaz. Paratypes deposited at UNAM – ICML 5.179. 1, two specimens, total length 40 and 78 mm. January 20, 2010. Same locality and collector data as the holotype. UNAM – ICML 5.179. 3, one specimen, total length 90 mm. January 21, 2010. Same locality and collector data as the holotype. UNAM-ICML 5.179. 3, two specimens, total length 42 and 65 mm. March 3, 2010, collected in El Corralón, Caleta de Campos, Michoacán, México (18 º 04.003’N, 102 º 43.958 ’W) at 5–6 m depth by F. A. Solís Marín and J. Arriaga Ochoa. UNAM – ICML 5.179. 4, one specimen, total length 60 mm. March 4, 2010, collected in Caletilla, Lázaro Cárdenas, Michoacán, México (18 º 03.143’N, 102 º 39.034 ’W) at 3 m depth by F. A. Solís Marín and J. Arriaga Ochoa. Type locality. Cerritos, Mazatlán, Sinaloa, México (23 ° 18.524 ’N, 106 ° 29.584 ’W). Description. Preserved specimens 40 to 90 mm long. Color in alcohol dark brown in the longitudinal mid dorsal area that mixes with lighter brown towards the ventral side in the form of small patches of color, forming a tabby-like pattern. The specimens from Michoacán have, in addition, two rows of visible black spots along the dorsum. Body wall covered by scattered, short, cylindrical tube feet, more numerous on the ventral than on the dorsal surface. On the dorsal body wall also scattered very few tiny papillae that sometimes can be highlighted by lighter or darker patches (Fig. 1). Tube feet of the bivium the same color as lightest parts of the body wall; on the trivium yellowish or light brown. Mouth terminal, surrounded by 20 dark olive green tentacles (holotype: 0.8 cm length). Base of tentacles surrounded by tiny papillae, more numerous on the radial than the interradial area. Anus terminal, with anal papillae. Body wall up to 2 mm thick. Ossicles absent from the dorsal and the ventral body wall. Dorsal tube feet with endplates as the only calcareous structure present, up to 300 µm across. Ventral tube feet also without ossicles, only endplates present 460–480 µm across. Ossicles present in the dorsal papillae in the form of tiny rods and pseudo endplates (Fig. 3, A). Smooth straight rods of different sizes, 50–130 µm long, with several distal projections, blunted or with double spines. Small rods with one distal perforation, large rods with several. Few with distal bifurcations, with an X-like shape. Pseudo endplates perforated irregularly, 50–60 µm wide and 80–85 long. Tentacles with numerous rods similar to those from the dorsal papillae, of variable sizes, from 45–70 µm up to 140–155 µm long (Fig. 3, D). Small rods smooth, few with projections and one distal perforation. Larger rods with distal projections, blunted or with double spines and several distal perforations. Anal papillae with straight smooth rods 30–125 µm long (Fig. 3, C). Some with few distal perforations and projections, some with only one distal smooth perforation. Very few X-like shaped rods and the presence of pseudo endplates (25 µm wide x 60 µm long) is rare. Papillae at the base of the tentacles also with two kinds of rods (Fig. 3, B). First type, smooth straight rods, some slightly curved, with distal projections (generally two) that bifurcate and join together forming one or more perforations with dentate or smooth rim; generally big in size, from 80 to 130 µm long. Second type, smooth slightly curved thin rods without distal projections or perforations; smaller in size, from 15 to 80 µm long. Longitudinal muscles divided, completely attached. Calcareous ring (Fig. 2, B) with radial plates as wide as two times the length of the interradial plate. Single, well developed Polian vesicle, 1 / 8 to 1 / 4 of body length. In one specimen, additionally two Polian vesicles 3 mm long. Cuvierian tubules present. Stone canal long (1 / 7 to 1 / 8 of body length) ending in a long, flat madreporite with a tapering end (Fig. 2, A). Gonads present, fully grown in three specimens. Right respiratory tree extending forward to the total length of the body. Etymology. The specific epithet carere in Latin means “to be without”. It is here used as a noun in apposition and refers to a unique characteristic of this sea cucumber, which is the absence of ossicles in the body wall and dorsal and ventral tube feet. Ecology. This species is found in shallow waters, from intertidal to 6 m depth. Specimens from Mazatlán were found completely hidden inside holes within a big rock, with only the tentacles outside for feeding, in a dendrochirote-like way of living. The specimens from Michoacán were found completely concealed under rocks. Apparently the species is highly plastic in using different feeding strategies, not specialized in a specific habitat. Geographic distribution. Holothuria (Selenkothuria) carere n. sp. is known only from two localities: Mazatlán, Sinaloa, México (type locality) in the lower limit of the Gulf of California and Caleta de Campos, Michoacán, México, in the Mexican Pacific Ocean.Published as part of Honey-Escandón, Magali, Solís-Marín, Francisco A. & Laguarda-Figueras, Alfredo, 2011, Holothuria (Selenkothuria) carere, a new species of sea cucumber (Echinodermata: Holothuroidea) from the Mexican Pacific, pp. 27-33 in Zootaxa 2922 on pages 29-32, DOI: 10.5281/zenodo.20242
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