169,802 research outputs found
Rhyacopsyche bulbosa Wasmund & Holzenthal, 2007, new species
No full textRhyacopsyche bulbosa, new species Fig. 8 This species is similar to R. dikrosa, new species, and R. hagenii in sharing bifid dorsolateral lobes. It can be distinguished by the 3 large apical setae of the inferior appendage and the absence of a lobe on the posterior margin of segment IX. Adult (male: n= 17, female: n= 8). Forewing length 2.8–3.8, 3.1 mm (male), 3.4–3.8, 3.6 mm (female). Color of head dark brown, antennae cream, legs cream, wings mottled medium and dark brown. Sternum VII with apicomesal point. Male genitalia. Abdominal segment IX heavily setose, anterior margin deeply rounded; sternum IX, in lateral view, with posterior margin produced into small rounded process; posterior margin produced into broad spatulate lobe; dorsolateral lobe of segment IX slightly produced, in dorsal view rounded, shallowly divided, nearly meeting dorsally, apex bearing 2 short, dark, peglike setae. Tergum X completely retracted inside segment IX. Intermediate appendage not evident. Inferior appendage elongate, heavily setose, apex clavate, bearing 3 long, light, pointed setae. Phallus linear, thin membranous sheath surrounding virtually the entire phallus, covered with spicules; central tubule with small apical hook; apex of lateral process lanceolate. Holotype male: BRAZIL: Rio de Janeiro: Nova Friburgo, municipal watersupply, 950 m, 24.iv. 1977, C M & O S Flint (UMSP 000115100) (MZUSP). Paratypes: BRAZIL: Minas Gerais: Ibitipoca, sitio of Anestis, Papadopoulos, cachoeira, 21 ° 43 ’ 26 ”S, 043° 54 ’ 32 ”W, 1125 m, 4–5.v. 1998, Holzenthal & Paprocki — 1 male (MZUSP); Rio de Janeiro: same data as holotype — 4 females (NMNH); Parque Nacional Tijuca, Represa dos Ciganos, 7.iv. 1977, C M & O S Flint — 1 male, 1 female (NMNH); Rio Macacú (2 nd order), on RJ 116, km 62, 22° 23 ’ 12 ”N, 042° 33 ’ 57 ”W, 840 m, 17.iii. 1996, Holzenthal, Rochetti, Oliveria — 2 males (UMSP); Parque Nacional da Serra dos Órgãos, Rio Paquequer, 22 ° 27 ’00”S, 042° 59 ’ 54 ”W, 1000 m, 26.ii. 2002, Holzenthal, Blahnik, Paprocki, Prather — 2 males, 3 females (UMSP); São Paulo: Parque Nacional da Serra da Bocaina Cachoeira dos Posses, 22 ° 46 ’ 26 ”S, 044° 36 ’ 15 ”W, 1250 m, 3.iii. 2002, Holzenthal, Blahnik, Paprocki, Prather — 10 males (MZUSP). Distribution. Brazil. Etymology. Bulbosus, Latin for swollen, referring to the apical swelling of the inferior appendages.Published as part of Wasmund, Anne M. & Holzenthal, Ralph W., 2007, A revision of the Neotropical caddisfly genus Rhyacopsyche, with the description of 13 new species (Trichoptera: Hydroptilidae), pp. 1-59 in Zootaxa 1634 on pages 8-9, DOI: 10.5281/zenodo.17947
Rhyacopsyche ramphisa Wasmund and Holzenthal 2007
No full textRhyacopsyche ramphisa Wasmund and Holzenthal, 2007 Material examined— Cocle Prov, Cuenca 134, Quebrada La Yaya, La Pintada, El Harino, PSPSCD- PNOTH-C134-2017-004, 8.66168°N and 80.59522°W, 586 m, Malaise trap, 22–26.iii.2017, E. Álvarez, T. Ríos, and E. Pérez, 7 males. Distribution: Colombia, Costa Rica, Peru, Panama.Published as part of Armitage, Brian J., Blahnik, Roger J., Harris, Steven C., Cornejo, Aydeé & Arefina-Armitage, Tatiana I., 2018, The Trichoptera of Panama VII. Additional new country records for caddisflies from the Republic of Panama, pp. 1-7 in Insecta Mundi 614 on page 5, DOI: 10.5281/zenodo.369933
Rhyacopsyche dikrosa Wasmund & Holzenthal, 2007, new species
No full text<i>Rhyacopsyche dikrosa</i>, new species <p>Fig. 13</p> <p> This species resembles <i>R. hagenii</i> in general form. Both <i>R. hagenii</i> and <i>R. dikrosa</i> possess bifid dorsolateral lobes, a midlateral lobe on segment IX, and a single large apical seta on the inferior appendage. The elaborately developed, forked dorsolateral lobes of <i>R. dikrosa</i> are unique among all <i>Rhyacopsyche</i> species. In addition, this is the only species with long peglike setae present on tergum X and a basally bifid inferior appendage.</p> <p>Adult (male: n=11, female: n=12). Forewing length 2.9–3.5, 3.1 mm (male), 3.0–4.0, 3.5 mm (female). Color of head dark brown, antennae light brown, legs medium brown, wings mottled medium and dark brown. Sternum VII with apicomesal point.</p> <p>Male genitalia. Abdominal segment IX heavily setose, anterior margin deeply rounded; sternum IX, in lateral view, with posterior margin produced into small rounded process; posterior margin produced into small rounded lobe bearing short, thick setae; dorsolateral lobe of segment IX elongate, in dorsal view narrowed, deeply divided, widely separated, terminating in large fork, the ventral lobe bearing 1 short peglike seta. Tergum X partially retracted inside segment IX, apex rounded, bearing several long, dark, thick setae. Intermediate appendage not evident. Inferior appendage elongate, heavily setose, base bifid, dorsal lobe long and narrow, ventral lobe larger, rounded, bearing 1 large pointed seta. Phallus linear, thin membranous sheath surrounding virtually the entire phallus, covered with spicules; central tubule with two opposing apical hooks; apex of lateral process rounded.</p> <p> <b>Holotype male: BRAZIL: São Paulo:</b> Pedregulho, 140 km NE Ribeirao Preto, 20.iii.1989, L G Oliveira — 1 male (UMSP 000115164) (MZUSP).</p> <p> <b>Paratypes: BRAZIL: Minas Gerais:</b> Parque Estadual Itacolomi, Rio Belchior, 20°25’02”S, 043°25’38”W, 725 m, 2.ii.1998, Holzenthal & Paprocki — 2 males (MZUSP); 17.xii.1998, Paprocki & Amarante — 2 males, 3 females (UMSP); Corrego Pitanga, upstream of confluence with Rio Santo Antônio, 19°05’40”S, 042°39’54”W, 238 m, 19.x.2000, Paprocki & Ferreira — 1 male (UMSP); <b>Rio de Janeiro:</b> Nova Friburgo, municipal water supply, 950 m, 24.iv.1977, C M & O S Flint — 1 male (NMNH); Rio Sousa, in Cachoeiras de Macacú, 26°26’34”S, 042°37’57”W, 150 m, 16.iii.1996, Holzenthal, Rochetti & Oliveira — 1 male (MZUSP); <b>São Paulo:</b> Estação Biológica Boraceia, Rio Guaratuba, 23°40’02”S, 045°53’46”W, 775 m, 17.iv.1998, Holzenthal, Melo & Froehlich — 3 males, 8 females (UMSP); Rio Coruja, 23°40’06”S, 045°53’57”W, 850 m, 18.iv.1998, Holzenthal, Melo & Froehlich — 1 male, 1 female (MZUSP).</p> <p> <b>Distribution.</b> Brazil.</p> <p> <b>Etymology.</b> The Greek word <i>dikros</i>, meaning forked, referring to the prominent fork of the dorsolateral lobe of segment IX.</p>Published as part of <i>Wasmund, Anne M. & Holzenthal, Ralph W., 2007, A revision of the Neotropical caddisfly genus Rhyacopsyche, with the description of 13 new species (Trichoptera: Hydroptilidae), pp. 1-59 in Zootaxa 1634</i> on pages 11-12, DOI: <a href="http://zenodo.org/record/179477">10.5281/zenodo.179477</a>
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
Biomarkers in the stratified water column of the Landsort Deep (Baltic Sea)
No full textThe water column of the Landsort Deep, central Baltic Sea, is stratified
into an oxic, suboxic, and anoxic zone. This stratification controls the
distributions of individual microbial communities and biogeochemical
processes. In summer 2011, particulate organic matter was filtered from
these zones using an in situ pump. Lipid biomarkers were extracted from the filters
to establish water-column profiles of individual hydrocarbons, alcohols,
phospholipid fatty acids, and bacteriohopanepolyols (BHPs). As a reference,
a cyanobacterial bloom sampled in summer 2012 in the central Baltic Sea
Gotland Deep was analyzed for BHPs. The biomarker data from the surface
layer of the oxic zone showed major inputs from cyanobacteria,
dinoflagellates, and ciliates, while the underlying cold winter water layer
was characterized by a low diversity and abundance of organisms, with
copepods as a major group. The suboxic zone supported bacterivorous
ciliates, type I aerobic methanotrophic bacteria, sulfate-reducing bacteria,
and, most likely, methanogenic archaea. In the anoxic zone, sulfate reducers
and archaea were the dominating microorganisms as indicated by the presence
of distinctive branched fatty acids: archaeol and pentamethylicosane (PMI) derivatives,
respectively. Our study of in situ biomarkers in the Landsort Deep thus provided an
integrated insight into the distribution of relevant compounds and describes
useful tracers to reconstruct stratified water columns in the geological
record
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
A Multi-Language Comparison of Influences on Author Verification using Character N-Grams
No full textWe create a new multi-language corpus for author verification based on Wikipedia talkpages, and evaluate the influence that differences in topic and time have on character n-gram author profiles. Topic alignment between two texts is found to increase author verification precision, and an authors writing style is found to change over time, but not more significantly after 3 years than after 1 year.Information ArchitectureWISElectrical Engineering, Mathematics and Computer Scienc
A 0.12mm<sup>2</sup> Wien-Bridge Temperature Sensor with 0.1°C (3σ) Inaccuracy from -40°C to 180°C
No full text Resistor-based temperature sensors can achieve much higher resolution and energy efficiency than conventional BJT-based sensors [1], but they typically occupy more area (> 0.25 mm 2 ) and have lower operating temperatures (le 125 {circ} {C}) [2]-[4]. This work describes a 0.12mm 2 resistor-based sensor that uses a Wien-bridge (WB) filter to achieve 0.1 {circ} {C} (3 sigma) inaccuracy from - 40 {circ} {C} to 180 {circ} {C}. Compared to a state-of-the-art WB sensor [4], it occupies 6 × less area and achieves comparable relative accuracy over a 76% wider operating range. Session 10.3 Green Open Access added to TU Delft Institutional Repository ‘You share, we take care!’ – Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Electronic InstrumentationMicroelectronic
A ±25A Versatile Shunt-Based Current Sensor with 10kHz Bandwidth and ±0.25% Gain Error from -40°C to 85°C Using 2-Current Calibration
No full textAccurate current sensing is critical in many industrial applications, such as battery management and motor control. Precise shunt-based current sensors have been reported with gain errors of less than 1% over the industrial temperature range (-40°C to 85°C) [1]–[4]. However, since they are intended for coulomb counting, their bandwidth is limited to a few tens of Hz, making them unsuitable for battery impedance or motor-current sensing. This paper presents a current sensor with a wide (10kHz) bandwidth and a tunable temperature compensation scheme (TCS), which allows it to be flexibly used with different types of shunts while maintaining high accuracy. A low-cost room-temperature calibration scheme is proposed to optimize gain flatness over temperature by exploiting the shunt's self-heating at large currents. Over the industrial temperature range and a ±25A current range, it achieves state-of-the-art gain error (±0.25%) with both low-cost PCB and stable metal-alloy shunts.Green Open Access added to TU Delft Institutional Repository 'You share, we take care!' - Taverne project https://www.openaccess.nl/en/you-share-we-take-care Otherwise as indicated in the copyright section: the publisher is the copyright holder of this work and the author uses the Dutch legislation to make this work public.Electronic InstrumentationMicroelectronic
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