177,360 research outputs found
FIGURE 4 in Indigofera himachalensis (Fabaceae: Indigofereae), a new species from Himachal Pradesh, India
No full textFIGURE 4. Indigofera himachalensis (from Chauhan & Pandey 5011) A. Habit, B. Leaflet (leftside)-abaxial, (rightside)-adaxial C. Standard, D. Wings, E. Keel, F. Calyx with gynoecium, G. Pod, H. Seed. Drawn by V. Chauhan.Published as part of Chauhan, Vibha, Pandey, Arun K. & Schaefer, Hanno, 2013, Indigofera himachalensis (Fabaceae: Indigofereae), a new species from Himachal Pradesh, India, pp. 43-49 in Phytotaxa 112 (2) on page 48, DOI: 10.11646/phytotaxa.112.2.2, http://zenodo.org/record/507885
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
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
Effect of harvest methods on the second flush yield of short-duration pigeonpea (Cajanus cajan)
No full textShort-duration pigeonpea can give up to three harvests in environments with mild winters (e.g. minimum temperature above 10 °C) such as those prevailing in peninsular India (Sharma, Saxena & Green. 1978; Chauhan, Venkataratnam & Sheldrake, 1984). This is mainly due to the short time (about 120 days) taken to produce the first flush, and the strong perennial character of pigeonpea. The seed yield of short-duration pigeonpea in this multiple-harvest system may reach 5·2 t/ha (Chauhan et al. 198
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
Lipid based nanoparticles: SLN, NLC and MAD
No full textLipid-based nanosystems have been widely proposed as novel drug carrier systems since they have gained interest as matrixes able to dissolve and to control the delivery of active molecules, on one hand improving their solubility in water and their bioavailability and on the other reducing side-effects. Among nanoparticles based on lipids one can mention (a) solid lipid nanoparticles (SLN) that add up the benefit of colloidal lipid emulsions and those of solid matrix particles; (b) nanostructured lipid carriers (NLC), an evolution of SLN typified by a blend of a solid lipid matrix and a liquid lipid phase and (c) monooleine aqueous dispersions (MAD) that are heterogeneous systems made by a complex lyotropic liquid crystalline nanostructures such as micelles and lamellar, hexagonal, and cubic phases. Concerning their morphological characterization, X-ray diffraction and microscopy are used in order to obtain information about shape, inner structure, dimensions of powders and dispersions that could not otherwise be identified. Notably, this chapter provides an overview of the above mentioned lipid-based nanosystems loaded with some phytoconstituents studied by our research group
Machine Learning Based Cross-Language Vulnerability Detection : How Far Are We
No full textThis thesis concerns the study of Machine Learning based methods for detecting vulnerable
code. Various Neural Network models have been trained to detect specific vulnerabilities
on a programming language dataset. This work, entails an approach not targeting specific
vulnerabilities. We also leverage the commonality among programming languages like JAVA
and C# by training the model on both languages and detecting vulnerabilities
Reply to the comment on 'Environmental impact of the 73 ka Toba super-eruption in South Asia' by M. A. J. Williams, S. H. Ambrose, S. van der Kaars, C. Ruehlemann, U. Chattopadhyaya, J. Pal, P. R. Chauhan
No full textHaslam and Petraglia raise three broad questions concerning our paper ‘Environmental impact of the 73 ka Toba super-eruption in South Asia’, by Martin A. J. Williams, Stanley H. Ambrose, Sander van der Kaars, Carsten Ruehlemann, Umesh Chattopadhyaya, Jagannath Pal, Parth R. Chauhan [Palaeogeography, Palaeoclimatology, Palaeoecology 284 (2009) 295–314]. (a) What was the relationship between the 73 ka Toba eruption and the cold stade between the Dansgaard–Oeschger interstades 20 and 19? (b) What was the regional impact of the eruption on vegetation? (c) What was the possible effect of the eruption upon humans and mammals? In response to questions (a) and (b) we note that the 73 ka Toba eruption was followed by several centuries of intense cooling and wind-blown dust accession in the Greenland GISP2 ice core, by a change from forest to grassland or open woodland in central India (carbon isotopic analysis) and in the wider region (pollen analysis of a marine sediment core in the Bay of Bengal). In regard to (c), the genetic evidence is as yet too imprecisely dated to demonstrate causality as is the archaeological evidence cited by Haslam and Petraglia in favour of minimal impact. Future work supported by higher resolution chronologies than are presently available is needed to provide a less equivocal picture of the environmental impact of the 73 ka Toba eruption.Martin A.J. Williams, Stanley H. Ambrose, Sander van der Kaars, Carsten Ruehlemann, Umesh Chattopadhyaya, Jagannath Pal and Parth R. Chauha
Chemical Composition of the Volatile Oil from the Roots of Selinum tenuifoliumWall.
No full textThe essential oil from the underground parts of Selinum tenuifoliumWall. (Apiaceae) was extracted
by hydrodistillation using a Clevenger-type apparatus, and analyzed by GC/FID and GC/MS. Nine
constituents, representing 97.7% of the total oil, were identified, five of which belong to the class of
polyacetylenes. The structures of the compounds 1 – 5 were elucidated by using IR, MS, and 1H- and
13C-NMR data after purification by column chromatography. The major constituent detected was nona-
3,5-diyne (1; 85.6% of the total volatiles), followed by nona-3,5-diyn-2-one (2), nona-4,6-diyn-3-one (3),
nona-3,5-diyn-2-ol (4), and nona-4,6-diyn-3-ol (5), accounting for 3.0, 2.5, 2.2, and 3.1% of the total
volatiles, respectively. The latter four polyacetylenes, 2 – 5, were never reported in plants so far, and,
therefore should be regarded as novel compounds
- …
