171,818 research outputs found
Zorotypus impolitus Mashimo, Engel, Dallai, Beutel
No full textZorotypus impolitus Mashimo, Engel, Dallai, Beutel, & Machida, sp. n. (Figs. 3, 4, 8) Type series. Holotype, apteron male, MALAYSIA: Selangor, Ul Gombak (elevation ca. 200–400 m), 10 April 2011, coll. Y. Mashimo & R. Machida (UKM). Paratypes, 3 apteron males, 3 apteron females, 1 alate female, same data as holotype (SEHU, SMRC, UKM). Apteron and alate specimens were collected under the bark of rotting wood. Diagnosis. This species is similar to Z. sinensis and Z. medoensis but can be distinguished from them by the following: body size distinctly smaller, 2 mm vs. 3–4 mm; long stout bristles on ventral surface of metafemur, proximal 1 st and 3 rd bristles longer than others vs. more distad bristles shorter; male S 8 without posterior extension of posteromedial part; and in the shape of the male genitalia (cf. Hwang 1976: Figs. 3–6). Etymology. The specific epithet is based on the Latin impolitus, referring to the unpolished brown coloration of the body. Description. Apteron male. Body length ca. 2 mm (exclusive of antennae), color matte brown except membranous regions and yellowish white cercus; head subtriangular, slightly wider than pronotum, with whitish area in posterolateral corner; cephalic chaetotaxy as in Figure 3 A, curly setae grouped on vertex (likely associated with fontanelle gland as in males of some other species); compound eyes and ocelli absent; antennae 9 -segmented, distal three antennomeres paler (Fig. 8 A), antennomere I slightly curved outward, antennomere II faintly curved, short, about one-half length of antennomere III, antennomeres III–IX longer than wide, length subequal to that of antennomere I (Fig. 8 A); both mandibles with five apical teeth and well-developed molar region (Fig. 8 B, B’). Pronotum subrectangular, slightly narrowed posteriorly; mesonotum trapezoidal, slightly shorter than pronotum; metanotum trapezoidal, distinctly wider than long, shorter than mesonotum; thorax setose as in Figure 3 B. Legs with moderate-length setae; tibiae and tarsi of all legs paler in color; posterior surface of profemur covered with short setae, anterior and dorsal surfaces covered with moderate-length setae; protibia with moderate-length setae, bristles arranged as comb in distal half along ventral surface, with two apical spurs; mesofemur slightly narrower than profemur, anterior surface broadly setose, posterior and dorsal surfaces covered with moderate-length setae only distally; mesotibia covered with moderate-length setae and two apical spurs; metafemur broader than profemur, more swollen proximally than distally as in Figure 8 D, anterior surface broadly setose, posterior and dorsal surfaces with moderate-length setae on distal half and several short setae on proximal half, ventral surface with eight or nine stout bristles, proximal first and third bristles longer than others (Fig. 8 D); metatibia with moderate-length setae and two apical spurs. Abdominal tergal chaetotaxy as in Figure 3 D; T 1 with a single transverse row of short setae, and a few small setae laterally (Fig. 3 D); T 2–7 with regular vestiture of numerous setae of short and moderate length and a pair of longer setae along posterior margin (Fig. 3 D); T 8 with numerous fine, small setae, three pairs of moderate-length setae and a pair of long, erect setae (Figs. 3 D, 4 B); T 9 short, scarcely sclerotized (Figs. 3 D, 4 C); anterior half of T 10 sclerotized, posterior half membranous; with numerous fine, small setae and median spatula-like, upcurved projection (Figs. 3 D, 4 B; asterisk in Fig. 4 C); T 11 with long and strongly upcurved median projection and two smaller, lateral sclerites each bearing three or four moderate-length setae (Figs. 3 D, 4 B; star in Fig. 4 C); epiproct and paraproct unsclerotized (Fig. 4 B); cercus unsegmented, conical, with one long apical seta, three or four subapical moderate-length setae, several short setae, and very long and fine setae (Fig. 3 D), surface covered with numerous minute spicules except base and apex (too minute to be included in drawing); chaetotaxy of sterna as in Figure 4 A; S 1 scarcely sclerotized; S 2 weakly sclerotized with two or three short setae on each side (Fig. 4 A); S 3–4 with two transverse rows of short setae (Fig. 4 A); S 5 with short setae evenly scattered and a pair of scarcely sclerotized circular areas (Fig. 4 A); S 6–7 with evenly scattered short setae (Fig. 4 A); S 8 wider than long, with evenly scattered, moderate-length setae (Fig. 4 A) and a pair of longer setae (Fig. 4 B); S 9 fused to S 8; S 10 invaginated beneath S 8 + 9, not visible externally; S 11 with two lateral subtriangular sclerites (hemitergites), each with several setae of short and moderate length (Fig. 4 B). Genitalia asymmetrical, without elongate coiled flagellum and well defined basal plate; dorsal sclerite weakly sclerotized, with anterior end curved; middle sclerite twisted and curved; spatula-like ventral sclerite present beneath middle sclerite (Fig. 8 E). Apteron female. Generally as in male except as follows: Head without curly setae grouped on vertex. Abdominal T 10 uniformly sclerotized with four or five setae on each side and a pair of setae of moderate length (Fig. 4 E); T 11 uniformly sclerotized, with small setae and a pair of setae of moderate length (Fig. 4 E); S 8 and 9 not fused; S 8 wider than long, with short setae evenly scattered and two pairs of moderate-length setae, posteromedially with round membranous region (Fig. 4 D); S 9 short and trapezoidal; several small setae and two pairs of moderate-length setae along posterior margin (Fig. 4 D). Alate. General features as in apterous form except as follows: unpolished, blackish brown coloration. Compound eyes and three black ocelli present. Mesonotum indistinctly divided into slightly pointed prescutum, large mesoscutum, and smaller mesoscutellum (Fig. 3 C). Wings as in Figs. 8 C and 8 C’.Published as part of Mashimo, Yuta, Yoshizawa, Kazunori, Engel, Michael S., Abd, Idris, Dallai, Romano, Beutel, Rolf G. & Machida, Ryuichiro, 2013, Zorotypus in Peninsular Malaysia (Zoraptera: Zorotypidae), with the description of three new species, pp. 498-514 in Zootaxa 3717 (4) on pages 507-511, DOI: 10.11646/zootaxa.3717.4.4, http://zenodo.org/record/21964
Zorotypus (Octozoros) hirsutus Mashimo & Müller & Pohl & Beutel 2018, sp. n.
No full textZorotypus (Octozoros) hirsutus Mashimo, sp. n. (Figs. 1, 2) Holotype: Alate female; Myanmar, Kachin State, Hukawng Valley (Kania et al. 2015: fig. 1; Jałoszyński et al. 2017: fig. 1); Albian-Cenomanian boundary, mid Cretaceous. The holotype is deposited in Patrick Müller’s private collection (depository number BUB 2785). Etymology. The specific name is taken from a Latin adjective hirsutus meaning “hairy, shaggy”, and refers to the bristly or hirsute appearance, with a dense vestiture of long and slender setae. Diagnosis. Zorotypus hirsutus sp. n. is tentatively assigned to the subgenus Octozoros based on the eightsegmented antenna. This species is readily distinguished from the other species of Octozoros by the combination of the following characters: strongly developed vestiture of bristles on the entire body; very slender, elongate antennomeres; elongated head with concave genal region; absence of thorn-like protuberances on mesonotal anterolateral corners; absence of jugate setae along posterior margin of forewings; relatively slender tibiae; empodium of meta-pretarsus reduced to a slender hair-like structure. Description. Alate female. Integument blackish brown except antennomeres VII and VIII (Fig. 1A, B). Head subtriangular, moderately elongated, with concave genal region (Figs. 1C, 2A). Surface covered with vestiture of long setae (Figs. 1C, 2A). Compound eyes prominent; three ocelli present. Antennae 8-segmented, with vestiture of setae of moderate length (Fig. 1A, B); antennomere I elongate, approximately 4.5 times longer than wide; antennomere II relatively short, about one-third as long as antennomere I; antennomere III elongate, approximately twice as long as antennomere II; antennomeres IV–VI distinctly elongated, slender, approximately six times as long as wide; antennomeres VII-VIII very slender, approximately four times as long as wide. Maxilla only partly visible; galea with comb of mesally directed setae on apical region (Figs. 1C, 2A); slender lacinia with two small mesally directed teeth on distal part (Fig. 2A); maxillary palpus with palpomere I not visible; palpomeres II, III and V distinctly elongated; palpomere IV slightly longer than wide. Labial palpus with palpomere I partly visible; palpomere II slightly elongated and palpomere III distinctly elongated (Figs. 1C, 2A). Pronotum subrectangular, longer than wide, slightly narrowing anteriorly; with vestiture of setae of moderate length on surface and also densely covered with long setae along margins (Fig. 1D). Mesonotum only partly visible; distinctly broader than long, about half as long as pronotum; thorn-like protuberances on the anterolateral corners absent; with vestiture of setae of moderate length on surface and along margins. Metanotum (and part of wings) covered by bubble; distinctly broader than long, slightly shorter than mesonotum, with setae of moderate length along lateral and posterior margin. Legs densely covered with setae of moderate length; tarsi 2-segmented. Protibia with bristles arranged as comb along distal ventral half and pair of spurs inserted apically (Fig. 1C, E). Mesotibia with apical pair of spurs (Fig. 1F). Metafemur proximally expanded, gently tapering towards apex; eight stout spines (sp1–8) placed on tubercles along posterior border of ventral surface (1–7 in Fig. 1F); sp5 and sp7 distinctly elongated; sp1 slightly longer than remaining spines (Fig. 1E); right metafemur with one additional small spine between sp6 and sp7 (6+ in the inset in Fig. 1F); three stiff bristles inserted at preapical region of anterior border of ventral surface (Fig. 1F). Metatibia slender, with two stout spines at apical one-third and at apex (a, b in Fig. 1A), additionally with tiny spine near most apical spine (white arrow in Fig. 1A, G). Meta-pretarsus with pair of small pulvilli (black arrowhead in the inset in Fig. 1G); empodium reduced to slender hair-like structure (white arrowhead in the inset in Fig. 1G). Stiff spine present between metacoxae (black arrow in Fig. 1F). Abdominal setae dense (Fig. 2C). Abdominal tergum I (T1) with transverse row of setae of moderate length along posterior margin (Fig. 2B); T2–10 with vestiture of setae of moderate length; T2–7 with pair of long, erect setae on both sides of posterior region; T8–9 with two pairs of long, erect setae on both sides of posterior region. Median up-curved projections missing (Fig. 2C). Cercus unsegmented, conical, with four or five long subapical setae almost as long as cercus, proximally with moderate to long, fine setae (Figs. 1A, B, 2B, C). Abdominal sterna I–III (S1–3) not visible; S4–8 with setae of moderate length (Fig. 2C). Wing venation (Fig. 1A, B) visible as faint, fuscous lines; membrane hyaline except for brownish pterostigma of forewing, covered with minute setae; both fore and hind wings with dense fringes of short setae, slightly longer than those of membrane; posterior margin of forewings lacking stiff, jugate setae. Forewing (Fig. 1A) R reaching pterostigma base, evanescent distally; Rs separating from radial stem near midpoint of wing, connected with M by short rs-m cross vein; M reaching posterior wing margin, slightly proximal to termination of Rs; CuA 1 extending over third-fifths of wing, terminating on posterior margin; CuA 2 present as a very short stub in basal third of wing. Hind wing with R+M furcated near apex, both R and M reaching wing margins; Cu absent. Remarks. A lobe-like structure is partly visible lateral to the left galea (asterisk in Figs. 1C, 2A), but could not be unambiguously identified; corresponding part on right side concealed by bubble.Published as part of Mashimo, Yuta, Müller, Patrick, Pohl, Hans & Beutel, Rolf G., 2018, The " hairy beast " - Zorotypus hirsutus sp. n., an unusual new species of Zoraptera (Insecta) from Burmese amber, pp. 562-568 in Zootaxa 4508 (4) on pages 563-566, DOI: 10.11646/zootaxa.4508.4.4, http://zenodo.org/record/260753
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
Onion-like carbon-encapsulated Co, Ni, and Fe magnetic nanoparticles with low cytotoxicity synthesized by a pulsed plasma in a liquid
No full textWe synthesized onion-like carbon-encapsulated Co, Ni, and Fe (Co-C, Ni-C, and Fe-C) magnetic nanoparticles with low cytotoxicity using pulsed plasma in a liquid. The pulsed plasma is induced by a low-voltage spark discharge submerged in a dielectric liquid. The face-centered cubic Co and Ni, and body-centered cubic Fe core nanoparticles showed good crystalline structures with an average size between 20 and 30 nm were encapsulated in onion-like carbon coatings with a thickness of 2-10 nm. Vibrating-sample magnetometer measurements revealed the ferromagnetic properties of as-synthesized samples at room temperature (Co-C=360 Oe, Fe-C=380 Oe, and Ni-C=211 Oe). Raman-spectroscopy analysis found onion-like carbon shells composed of well-organized graphitic structures. Thermal gravimetric analysis showed a high ___________________
*Corresponding author. Tel/Fax: +08052593295. E-mail address: [email protected] (T. Mashimo)
stability of the as-synthesized samples under thermal treatment and oxidation. Cytotoxicity measurements showed higher cancer cell viability than samples synthesized by different methods
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
FIGURE 1 in Zorotypus pecten, a new species of Zoraptera (Insecta) from mid-Cretaceous Burmese amber
No full textFIGURE 1. Zorotypus pecten sp. n., holotype (BUB2809). A: Habitus in posterodorsal view. B: Habitus in anteroventral view. C, D: Right metaleg in anterior (C) and posterior (D) views. E: left metafemur in distal view. F: Left metatarsus. G, H: Postabdomen in laterocaudal view. 1–6, metafemoral spines 1–6; 1'–2', stiff bristles present at anterior border of ventral surface of metafemur; a–c, metatibial spines a–c; a1–8, antennomeres I–VIII; ce, cercus; ct, ctenidium; e, compound eye; lr, labrum; mp, median up-curved projection; mx, maxilla; mxp, maxillary palp; oc, ocelli; T8–11, eighth to eleventh abdominal terga; ts, thick setae. Arrow and arrowheads show posteromedian projection of S8 and small pulvilli, respectively. Scales = 0.5 mm in A, B; 0.2 mm in C–E; 0.05 mm in F; 0.1 mm in G.Published as part of Mashimo, Yuta, Müller, Patrick & Beutel, Rolf G., 2019, Zorotypus pecten, a new species of Zoraptera (Insecta) from mid-Cretaceous Burmese amber, pp. 565-577 in Zootaxa 4651 (3) on page 568, DOI: 10.11646/zootaxa.4651.3.9, http://zenodo.org/record/336346
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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