170,159 research outputs found
Diogenion vermifactus Codreanu, Codreanu & Pike 1960
No full textDiogenion cf. vermifactus Codreanu, Codreanu & Pike, 1960 Figures 3–5 Diogenion vermifactus Codreanu, Codreanu & Pike, 1960: 439–441, fig. 1 (Red Sea, infesting Diogenes senex); Codreanu et al. 1965: 225 (mention); Codreanu 1967: 209 (mention); Bourdon 1980: 243 (list); Adkison 1990: 34–40, fig. 3 (after Codreanu et al. 1960); Kensley 2001: 226 (list); McDermott et al. 2010: 12 (list), 28 (mention). unidentified entoniscid Williams et al. 2019: 85, 97, 101, 104 (Philippines, infesting Calcinus gaimardii and Calcinus minutus). Material examined. Philippines: Female (19.4 mm) (USNM 1522331), infesting Calcinus gaimardii (3.5 mm SL), inhabiting unknown shell, Lalaguna Beach, Puerto Galera, 13°31’32″ N, 120°58’8″ E, coll. J.D. Williams, 3 March 1999. Female (6.9 mm), male (2.5 mm), and multiple larvae on two SEM stubs (USNM 1522332), infesting Calcinus pulcher (3.5 mm SL), inhabiting unknown shell, Batangas, Anilao, 13°42’14.5″ N, 120°52’45.3″ E, coll. J.D. Williams, 13 February 1999. Female (19.0 mm) (USNM 1522333), infesting C. gaimardii (6.0 mm SL), inhabiting unknown shell, Mabayo, Bataan, 14°44′00″ N, 120°16′32″ E, coll. J.D. Williams, 21 February 1999. Female (10.5 mm) and male (2.5 mm) (USNM 1522334), infesting Calcinus minutus (2.7 mm SL), inhabiting unknown shell, host also with bopyrid parasite (Bopyrissa marami) in right branchial chamber, Coco Beach, Puerto Galera, 13°31′32″ N, 120°57′44″ E, coll. J.D. Williams, 14 January 1999 (indicated as 12 January 1999 in Williams et al. 2019). Female (15.2 mm) and male (no measurement) (ZRC 2022.0962), infesting C. gaimardii (4.4 mm SL), inhabiting unknown shell, Lalaguna Beach, Puerto Galera, 13°31′32″ N, 120°58′8″ E, coll. J.D. Williams, 17 June 2000. Female (4.6 mm) and male (1.5 mm) (ZRC 2016.0411) from male Pagurojacquesia polymorpha (2.3 mm), inhabiting unknown shell, west off Panglao Island, Station CP2334, 09°37.5′00″ N, 123°40.2′00″ E (see de Forges et al., 2009), beam trawl, 631–659 m, sandy bottom, Panglao Expedition 2005, 22 May 2005. Hosts: Calcinus gaimardii, Calcinus minutus, Calcinus pulcher, Diogenes senex (type host of Diogenion vermifactus), Pagurojacquesia polymorpha. Description of female: Female in abdomen of host surrounded by host induced sheath; positioned with anterior end at posterior end of host and ventral surface of parasite directed to dorsal surface of host (fig. 3A, B). Host tube with exit pore near first pereopod of host (fig. 3B). Head bilobed, with elongated oval lobes (figs. 3C, 4A). Antennulae fused into large, flattened, pad-like structure. Antennae as thin digitate extensions (fig. 4A). Maxillipeds small, round (fig. 4A). Pereon without ovarian processes. Oostegites 1–7 present, progressively smaller posteriorly; oostegite 1 normally folded back posterior to head and surrounded by other oostegites (fig. 3A, B), large and flap-like with rounded anterior end and inner surface lined with pleat-like folds (fig. 3C). Pereopods 1–7 present; pereopods segmented, each with small dactylus present on distal end; scales present (fig. 4B, C). Pleon slender, with five pleomeres; small heart in pleomere 1; pleopods, pleural lamellae and uropods absent (fig. 4D). Brood development synchronous; all larvae at same stage of development. Description of male: Male found within brood chamber of female. Only one male accompanying female (when present). Body curved ventrally, pale in color with few spots of pigmentation (fig. 4E, F). Head small and rounded. Pair of elongated conical antennulae extending beyond margin of head, terminally setose; pair of conical antennae slightly larger than antennulae each with tuft of terminal setae (fig. 4G). Oral cone with mandibles and maxilliped present (fig. 4G). Seven pereomeres; pereon maximal width at pereomeres 4–6, gradually tapering anteriorly and posteriorly (fig. 4E, F). Six pairs of pereopods present, absent on pereomere 7 (fig. 4F); pereopods multi-segmented, subequal in size, each with curved dactylus (fig. 4H); patch of scales on propodus at point where dactylus terminates on all pereopods (fig. 4H). Pleon of five segments plus pleotelson; pleomeres gradually decreasing in size posteriorly; without appendages (fig. 4E, F). Uropods well developed; terminal setae present (fig. 4E). Description of epicaridium larva (undergoing molt): Approximately 340 µm in length. Body teardrop shaped and dorsally convex; anterior margin of head rounded (fig. 5A). Head with pair of conical antennulae (segmentation and setae not distinct due to molting process) (fig. 5A, C); pair of long antennae of seven segments, four peduncular and three flagellar, half of total body length when fully extended (fig. 5A, B). Oral cone with pair of maxillipeds on each side of mouth on ventral side. Pereon of seven segments. Six pereopods; subequal in length, subchelate with ovate propodi and curved dactyli (fig. 5A, B). Pleon with five pairs of biramous pleopods, subequal in size, with three short setae on exopod and two short setae on endopod (fig. 5D). Telson tapered to point. Uropods with pointed endopod, slightly longer than exopod, both bearing short terminal setae (fig. 5E). Remarks: All specimens match the original morphological description of Diogenion vermifactus (Codreanu et al. 1960), previously known only infesting Diogenes senex in the Red Sea (fig. 2). However, in this study D. cf. vermifactus was found to parasitize three species of shallow subtidal calcinid hermit crabs, C. gaimardii, C. minutus and C. pulcher and the deeper water pagurid P. polymorpha in the coastal waters of the Philippines, over 8,000 km away from the type locality in the Red Sea (fig. 1). Currently, we cannot morphologically distinguish the Philippine specimens of Diogenion from those of the Red Sea; however, given this disjunct distribution and the barriered nature of the Red Sea (DiBattista et al. 2016; Schnurr et al. 2018; Hadfield & Smit 2020) it is possible that the Philippine entoniscid is a distinct species from D. vermifactus. Additional data, ideally including molecular sequencing, is needed to clarify whether D. vermifactus is widely distributed across the Indo-West Pacific or represents a species complex (Hadfield & Smit 2020). At present, the substantial geographic distance between the two localities and diversity of hosts suggests that a designation of “cf.” for the Philippine specimens is warranted pending discovery of additional specimens from along the range. Many features of the adult Diogenion vermifactus are considered primitive when compared to other members of Entoniscidae (Codreanu et al. 1960; Adkison 1990). Specifically, the female has segmented pereopods, a brood pouch formed by overlapping oostegites and a synchronously developing brood; males also retain segmented pereopods and possess both pairs of antennae as well as uropods. For these reasons, Adkison (1990) suggested that the genus be placed in its own subfamily. The epicaridium larval stage of D. vermifactus was not previously described except for mention of the narrowness of the larvae, the great length of the appendages and the uniform structure of the pereopods and pleopods (Codreanu et al. 1960; Adkison 1990). Although previous authors did not provide drawings or detailed descriptions of this larval stage, the present specimens exhibit the gross morphological details reported previously. The present study confirms that the epicaridium larvae have nearly uniform pereopods, i.e., the sixth pereopod is not greatly modified as in the larvae of some entoniscid genera (e.g., Cancrion Giard & Bonnier, 1887). However, the epicaridium larvae examined were undergoing a molt, making some features difficult to distinguish, as has been shown to occur in other epicarideans (see Williams & Boyko 2021).Published as part of Detorre, Marissa, Williams, Jason D. & Boyko, Christopher B., 2023, A review of the endoparasitic isopods (Epicaridea: Entoniscidae) from hermit crabs, including description of the new subfamily Diogenioninae and a new species of Paguritherium Reinhard, 1945 from the Philippines, pp. 12-40 in Zootaxa 5249 (1) on pages 17-20, DOI: 10.11646/zootaxa.5249.1.2, http://zenodo.org/record/768527
Universities’ social responsibility through the lens of strategic planning: A content analysis
No full textThis paper examines the degree of social responsibility integration in Italian public universities’ medium and long-term planning documents. We adopted a qualitative approach, applying the content analysis technique to a selected sample of 20 strategic plans issued by Italian large and mega universities. The coding instrument was developed considering the 17 Sustainable Development Goals (SDGs) contained in the United Nations 2030 Agenda. Therefore, we identified 17 categories and 103 key symbols. The analysis undertaken showed that to date, Italian public universities still pay little attention in their planning documents to objectives regarding the multiple dimensions of Social Responsibility, mainly in relation to environmental issues, a failure detrimental to University Social Responsibility implementation and achievement. However, there is a greater sensitivity to Social Responsibility issues in some universities’ planning documents, therefore also more mature practices can be identified, showing universities that have institutionalized the concept of sustainability in their planning documents
Romanian Dendrocoelidae Hallez, 1892 (Platyhelminthes, Tricladida, Dendrocoelidae) Revisited: A Tribute to Radu Codreanu and Doina Balcesco
No full textThis paper presents the current state of knowledge on the Romanian Dendrocoelidae as part of the European/Palearctic Dendrocoelidae, emphasizing the contributions of the Romanian zoologists Radu Codreanu and Doina Balcesco. The main objective of this work was to identify the knowledge gaps for future alignment with current standards. This article presents the species inventory and a short historical overview of the classical phylogenetic system and discusses some morphological characters used in the systematics of the group. This study also analyzes the arguments (and hypotheses) put forward by Codreanu, Balcesco, and other authors regarding the phylogenetic value of various factors, including (a) the position of the oviducts between the male atrium and the bursal canal (typical for Paradendrocoelum); (b) the eyes and the penial flagellum in relation to the palaeogeographical context governed by the Quaternary Glaciation; and (c) the point of view of Codreanu and Balcesco on the origin and composition of the actual Romanian Dendrocoelidae fauna. The major key finding is that the Dendrocoelidae species in Romania should be reinvestigated in an integrative way, and specific research needs and future directions are suggested
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
Deconvolution method for two-dimensional spatial-response mapping of lithographic infrared antennas
No full textThe spatial impulse response of antenna-coupled infrared detectors with dimensions comparable with the wavelength is obtained from a two-dimensional scan of a tightly focused CO(2)-laser beam. The method uses an experimental setup with submicrometer resolution and an iterative deconvolution algorithm. The measured spatial response is compared with numerically computed near-field distributions of a dipole antenna, with good agreement.Javier Alda, Christophe Fumeaux, Iulian Codreanu, Jason A. Schaefer, and Glenn D. Borema
Compact amorphous-silicon visible-light monitor integrated in silicon nitride waveguides
No full textThis work reports on the realization of an amorphous silicon visible-light detector integrated in Si3N4 waveguides. The device is very compact (< 40 μm), has a responsivity of about 10 mA/W and a sensitivity of -40 dBm
Mitomycin C in highly myopic eyes - Author reply
No full textOphthalmology. 2005 Feb;112(2):208-18; discussion 219.
Mitomycin C modulation of corneal wound healing after photorefractive keratectomy in highly myopic eyes.
Gambato C, Ghirlando A, Moretto E, Busato F, Midena E.
SourceRefractive Surgery Service and Antimetabolite Therapy Research Unit, Department of Ophthalmology, University of Padova, Padova, Italy.
Abstract
PURPOSE: To evaluate the role of topical mitomycin C in corneal wound healing (CWH) after photorefractive keratectomy (PRK) in highly myopic eyes.
DESIGN: Prospective, double-masked, randomized clinical trial.
PARTICIPANTS: Seventy-two eyes of 36 patients affected by high (>7 diopters) myopia.
METHODS: In each patient, one eye was randomly assigned to PRK with intraoperative topical 0.02% mitomycin C application, and the fellow eye was treated with a placebo. Postoperatively, mitomycin C-treated eyes received artificial tears (3 times daily, tapered in 3 months), whereas the fellow eye was treated with fluorometholone sodium 2% and artificial tears (3 times daily, tapered in 3 months).
MAIN OUTCOME MEASURES: Uncorrected visual acuity (UCVA) and best-corrected visual acuity (BCVA), contrast sensitivity, manifest refraction, and biomicroscopy. Contrast sensitivity was determined using the Pelli-Robson chart. Corneal confocal microscopy documented CWH.
RESULTS: Mean follow-up was 18 months (range, 12-36). No side effects or toxic effects were documented. At 12-month follow-up examination, UCVAs (logarithm of the minimum angle of resolution) were 0.4+/-0.48 and 0.5+/-0.53 (P = .03) in mitomycin C-treated eyes and corticosteroid-treated eyes, respectively. At 1 year, corneal haze developed in 20% of corticosteroid-treated eyes, versus 0% of mitomycin C-treated eyes. At 12, 24, and 36 months, corneal confocal microscopy showed activated keratocytes and extracellular matrix significantly more evident in untreated eyes (Ps = 0.004, 0.024, and 0.046, respectively).
CONCLUSION: Topical intraoperative application of 0.02% mitomycin C can reduce haze formation in highly myopic eyes undergoing PRK.
Comment in
Ophthalmology. 2006 Feb;113(2):357; author reply 357-8
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
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