172,149 research outputs found
Impatiens keralensis Saravanan & Kaliamoorthy 2022, sp. nov.
No full textImpatiens keralensis Saravanan & Kaliamoorthy, sp. nov. (Figure 1) Impatiens keralensis is closely allied to I. modesta Wight (1837: 13) and I. mohana Ratheesh, Sujana & Anil Kumar (2012: 282) in having common characters of a scapigerous tuberous habit, radical leaves, ovate-cordate lamina, unequally trilobed wing petals, and a blunt spur. But differs from I. modesta by having multicellular trichomes on adaxial leaf surfaces (vs unicellular hairs on adaxial leaf surfaces in I. modesta), short petioles (vs long petioles in I. modesta), short scapes (vs long scapes in I. modesta) and 3–6-flowered inflorescence (vs many flowered inflorescence in I. modesta), white flowers (vs pinkish/whitish in I. modesta), pedicels longer than flowers, lateral united petals white with yellowish purple papillose at the base of mid-lobe (vs yellowish with a tuft of purple hairs in I. modesta), and basal lobes emarginate at apex (vs obtuse in I. modesta); Impatiens keralensis also differ from I. mohana by having multicellular trichomes on adaxial on leaf surface (vs multicellular trichomes on both adaxial and abaxial leaf surfaces in I. mohana), spinose at margins (vs absence of spinose in I. mohana), glabrous petiole (vs trichomatous in I. mohana), and white flowers (vs deep pinkish in I. mohana) (Table 1). Type:— INDIA. Kerala: Wayanad District, Kurichiarmala Reserve Forest, 11º36’1”N, 75º57’59”E, 1100–1320 m, 11 December 2019, Saravanan & Kaliamoorthy 136020 (holotype MH!). Scapigerous, tuberous acaulescent, epiphytic herbs, 5–10 cm tall. Tubers sub-globose, 0.8 × 0.7 cm, brownish white. Stem-less. Leaves radical, 2-3 per tuber, 1.5–4.2 × 1.0– 3.5 cm, broadly ovate to cordate in outline, deeply cordate to auriculate-cordate at base, crenate-serrate and spinose at margins, obtuse at apex, adaxially covered with multicellular white trichomes, greenish; abaxially glabrous, pale purplish green, with 3-4 pairs of lateral nerves; petioles 1.9–3.3 cm long, pale reddish with purple streaks, glabrous. Inflorescence racemose; peduncle longer than the leaves, ca 6.5 cm long, 3–6-flowered, glabrous, terete, pale reddish with purple streaks; Flowers 0.6–0.8 cm across, white; bracts 0.3 × 0.1 cm, slightly falcate, obtuse at apex, glabrous, green with purple streaks, thick and fleshy; pedicel longer than the flowers, ca 1.3 cm long, filiform, pale reddish with purple streaks, glabrous; lateral sepals 0.2 × 0.1 cm, obliquely oblong, obtuse at apex, glabrous; dorsal petal ca 0.2 × 0.2 cm, concave, orbicular to reniform, obtuse at apex, forming a hood above the androecium, dorsally humped at base, glabrous; wing petals free, unequally 3-lobed, 1.4–1.5 × 0.6–0.8 cm, white with a tuft of deep yellowish purple papillose at the base of mid-lobe; basal lobe ca 0.7 × 0.2 cm, oblong, broadest at the middle, slightly up-curved, emarginate at apex; mid-lobe ca 0.5 × 0.2 cm, oblong, obtuse to truncate at apex; distal lobe ca 0.7 × 0.2 cm, oblong, obtuse to truncate at apex; dorsal auricle absent; lower sepal ca 0.3 × 0.2 cm, ovate, obtuse at apex, concave, white, 0.1 cm deep, glabrous; spur ca 0.3 × 0.1 cm, straight, white, glabrous; stamens ca 0.2 cm long, curved; filaments ca 5, 1.3 mm long, narrow and free at base, fused and broad at apex, light pink to white; anthers 5, ca 1.0 × 0.4 mm, white, cohering above the pistil; pistil ca 1.2 × 0.3 mm; ovary broadly obclavate to ellipsoid, glabrous. Capsules 0.5–0.8 cm long, broadly ellipsoid, greenish, glabrous; seeds minute, comose with tuft of hairs at both ends. Phenology:—Flowering & fruiting: August–November. Ecology:—Growing on moss covered wet tree trunks in evergreen forests, along with Impatiens veerapazhasii Ratheesh, Sujanapal & Meera (2011: 154), Oberonia bicornis Lindl. (1830: 16) and Oberonia swaminathanii Ratheesh, Manudev & Sujanapal (2010: 713), at an elevation of 1310 m. Conservation Status:— Impatiens keralensis is only known from the type locality with about 10–12 mature individuals. The population is well conserved within the boundaries of protected forest areas. However, considering the lesser number of individuals in a single population size distributed in an area of hardly 0.3 km, the species described here is assessed as Critically Endangered (CE) by applying the criterion d (IUCN 2019). Etymology:—The species is named after the Kerala state, India, where the type locality is present. Notes:— Impatiens keralensis is also allied to I. dendricola C. E. C. Fisch. (1935:157), in having a tuberous scapigerous epiphytic habit, radical leaves, flowers in racemose scapes, white flowers and presence of spur, but differs in the size and shape of the bract (slightly falcate in Impatiens keralensis vs ovate in I. dendricola), lateral sepals (obliquely oblong in Impatiens keralensis vs asymmetrically ovate in I. dendricola), dorsal petal (obtuse at apex in Impatiens keralensis vs retuse at apex in I. dendricola), wing petals (papillose at the base of mid-lobe in Impatiens keralensis vs hairs at the base in I. dendricola), spur (straight in Impatiens keralensis vs clavate in I. dendricola), and dorsal auricle (absent in Impatiens keralensis vs present in I. dendricola).Published as part of Saravanan, Thokuluva Santharam & Kaliamoorthy, Seventhilingam, 2022, Two new epiphytic species of Impatiens L. (Balsaminaceae) from the southern Western Ghats, India, pp. 107-114 in Phytotaxa 552 (1) on pages 107-110, DOI: 10.11646/phytotaxa.552.1.10, http://zenodo.org/record/667313
FIGURE 1. Impatiens keralensis A in Two new epiphytic species of Impatiens L. (Balsaminaceae) from the southern Western Ghats, India
No full textFIGURE 1. Impatiens keralensis A) Habit. B) Abaxial view of leaf. C) Flower. D) Lateral view of flower. E) Papillose close-up view on wing petals. F) Bract. G) Dorsal petal. H) Lateral sepal. I) Wing petals. J) Lower sepal and spur. K) Androecium. L) Fruit. (Photographs by T. S. Saravanan)Published as part of Saravanan, Thokuluva Santharam & Kaliamoorthy, Seventhilingam, 2022, Two new epiphytic species of Impatiens L. (Balsaminaceae) from the southern Western Ghats, India, pp. 107-114 in Phytotaxa 552 (1) on page 109, DOI: 10.11646/phytotaxa.552.1.10, http://zenodo.org/record/667313
Letter to the editor. Omega-3 fatty acids do not suppress atrial fibrillation even in the inflamed heart
No full textGoing 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
Intelligent Traffic Monitoring Based on Wireless Sensor Network
No full textThe traffic jam is a daily life problem in any metropolitan city. With the rise of standard of living, the number of vehicles is increasing at an exponential rate. In response to this, many researches are done in developing an intelligent traf c system. Rapid development of traffic in cities requires adaptive traffic flow control. Information on the number of vehicles in different lanes, their speed and their type is essential for adaptive management of intersections. Results are presented on real world traffic scenes showing the tracker to be both fast and robust to vibrations, which are inevitable in traffic locations. This study aims to test the distance measuring sensor, which can be used for both problems mentioned above. Experiments with the sensor carried out in real world conditions revealed its both strengths and weaknesses. Intelligent management of traffic flows can reduce the negative impact of congestion. In recent years, wireless networks are widely used in the road transport as they provide more cost effective options 1 . Technologies like RFID and GSM can be used in traffic control to provide cost effective solutions. Rajeswari. C | Saravanan. P "Intelligent Traffic Monitoring Based on Wireless Sensor Network" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-5 , August 2018, URL: https://www.ijtsrd.com/papers/ijtsrd15943.pd
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
Omega-3 fatty acid supplementation does not reduce risk of atrial fibrillation after coronary artery bypass surgery: a randomized, double-blind, placebo-controlled clinical trial
No full textBackground—Omega-3 polyunsaturated fatty acids (n-3 PUFA) have been reported to reduce the risk of sudden cardiac
death presumed to be due to fatal ventricular arrhythmias, but their effect on atrial arrhythmias is unclear.
Methods and Results—Patients (n108) undergoing coronary artery bypass graft surgery were randomly assigned to
receive 2 g/d n-3 PUFA or placebo (olive oil) for at least 5 days before surgery (median, 16 days; range, 12 to 21
days). Phospholipid n-3 PUFA were measured in serum at study entry and at surgery and in right atrial appendage
tissue at surgery. Echocardiography was used to assess left ventricular function and left atrial dimensions.
Postoperative continuous ECG monitoring (Lifecard CF) for 5 days or until discharge, if earlier, was performed
with a daily 12-lead ECG and clinical review if patients remained in the hospital beyond 5 days. Lifecard
recordings were analyzed for episodes of atrial fibrillation (AF) 30 seconds (primary outcome). Clinical AF, AF
burden (% time in AF), hospital stay, and intensive care/high dependency care stay were measured as secondary
outcomes. One hundred three patients completed the study (51 in the placebo group and 52 in the n-3 PUFA group).
There were no clinically relevant differences in baseline characteristics between groups. n-3 PUFA levels were
higher in serum and right atrial tissue in the active treatment group. There was no significant difference between
groups in the primary outcome of AF (95% confidence interval [CI], 6% to 30%, P0.28) in any of the
secondary outcomes or in AF-free survival.
Conclusions—Omega-3 PUFA do not reduce the risk of AF after coronary artery bypass graft surgery
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
Integrated InGaAlAs/InP laser-modulator using an identical multiple quantum well active layer
No full textWe present experimental results on 40 Gb/s large-signal modulation performance of 1.31 μm monolithic integrated laser-modulator in the InGaAlAs/InP material system, exploiting the gain and absorption properties of an identical multiple quantum well (MQW) active layer. In continuous wave operation, at 15◦ C, the devices
achieved threshold currents < 28 mA, fiber coupled optical power levels up to +0.4 dBm. The measured small signal modulation bandwidth was about 32 GHz. An air-cavity based Fabry-Perot interferometer has been realized to characterize the spectral chirp of the integrated structures in the time domain up to 40 Gb/s
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
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