2,329 research outputs found
Pheropsophus indicus Venugopal & Thomas 2019, sp. nov.
No full text<i>Pheropsophus indicus</i> sp. nov. <p>(Fig. 4 B, 5 B)</p> <p> <b>Specimens examined (n=2)</b>: Holotype, labelled “ Male, India: Kerala: Palakkad (10.806420°N, 76.690174°E), Hand Picking (Wet Paddy field), 26.XI.2017, coll. M. Divya ”; Paratype, male, India: Karnataka, 2013, coll. A. Anichtchenko.</p> <p> <b>Description.</b> TLA: 15.8 mm; TW: 6.6 mm</p> <p> <b>Colour:</b> Black head, pronotum and elytra. Black spot on head wide, widest towards pronotum, broad ‘M’ shaped black spot on vertex of head with a narrow extension up to the clypeus; clypeus and labrum black; epistome, margin around the eyes, reddish yellow; maxillary and labial palpi, reddish brown; eyes grey; first four antennal segments light reddish yellow, segments 2–4 with reddish brown ring on the apical portion, segments 5–11 reddish brown; scutellum black; humeral spot pale reddish yellow; legs with coxa, trochanter, femur, tibiae and 1 st segment of tarsi, reddish yellow; rest of the tarsal segments reddish brown; claws dark brown; apex of femur with wide black spot; underside of head reddish yellow, gula well-marked with reddish brown gular suture; prothorax including the prosternum black; mesosternum black; metasternum anterior half reddish yellow and posterior half black; metepisternum black.</p> <p> <b>Head:</b> Stout, smooth, glabrous, shiny, neck wrinkled; eyes protruding, with one supraorbital setae in the mid region above eye; antennae long, reaching the middle of elytra.</p> <p> <b>Pronotum:</b> Wider than long, smooth, glabrous except for a group of minute seta lining the apical margin; basal and apical margins straight, corners of apical and basal margin rounded, anterior 3/4 th of the lateral margin convex, posterior 1/4 th straight; deep median furrow; lateral bead narrow.</p> <p> <b>Elytra:</b> Subparallel, widest in the middle; humerus pronounced, rounded, humeral spot large; narrow median transverse band extending between 3 rd and 8 th stria, with strongly serrated edges, rounded and pointed towards suture; apical band narrow, reddish yellow, extending along the apical portion of stria; striations narrow, intervals wide, flat, glabrous.</p> <p> <b>Male Genitalia</b>: Median lobe slender compared to <i>P.devagiriensis</i> <b>sp. nov.</b>; highly arcuate, apex pointed.</p> <p> <b>Measurements</b>: <b>Holotype Male</b>, TLA= 16.16 mm; TLB= 15.84 mm; TW= 6.64 mm; PL = 3.28 mm; PW = 3.44 mm; EL = 9.52 mm.</p> <p> <b>Type Material</b>: 1 ex. Holotype, male, India: Kerala: Palakkad (10.806420°N, 76.690174°E), Hand Picking (wet paddy field), 26.XI.2017, coll. M. Divya, deposited at ZSIC.</p> <p>Paratype, male, India: Karnataka, 2013, coll. A. Anichtchenko.</p> <p> <b>Geographical distribution.</b> INDIA: Kerala: Palakkad; Karnataka</p> <p> <b>Collecting Circumstances</b>: Handpicked from a paddy field of Palakkad (India: Kerala), a region belonging to the Palakkad gap.</p> <p> <b>Etymology</b>: Named after ‘India’.</p> <p> <b>Remarks.</b> <i>Pheropsophus indicus</i> <b>sp. nov.</b> is similar to <i>P. occipitalis</i>, but differs in having broad ‘M’ shaped black spot on head, entirely black pronotum with straight apical and basal margins, broad elytra and narrow elytral median transverse band.</p>Published as part of <i>Venugopal, Akhil S. & Thomas, Sabu K., 2019, Bombardier beetles of the genus Pheropsophus Solier 1833 (Carabidae: Brachininae: Brachinini) from Indian subcontinent, pp. 65-89 in Zootaxa 4608 (1)</i> on page 86, DOI: 10.11646/zootaxa.4608.1.3, <a href="http://zenodo.org/record/3993611">http://zenodo.org/record/3993611</a>
Pheropsophus devagiriensis Venugopal & Thomas 2019, sp. nov.
No full text<i>Pheropsophus devagiriensis</i> sp. nov. <p>(Fig. 4 A, 5 A)</p> <p> <b>Specimens examined (n=6):</b> Holotype, labelled “ Male, India: Tamil Nadu: Courtallam (8.930855°N, 77.268843°E), Hand Picking, from under stones, 14.X.2015, coll. S.V. Akhil ”; Paratypes, 5 exs., India: Tamil Nadu: Courtallam (8.930855°N, 77.268843°E), 14.X.2015, coll. S.V. Akhil.</p> <p> <b>Description.</b> TLA: 20.0 mm; TW: 8.1 mm</p> <p> <b>Colour:</b> Head completely yellow without spots; clypeus (lateral edge brownish black) and labrum yellow with anterior brownish yellow border; fronto-clypeal suture light reddish brown; antennal segments 1–4 yellowish brown and 5–11 dark reddish brown; pronotum black with two large yellow spots on both sides of a narrow but prominent black median furrow, the two spots not reaching the lateral edge, lateral border being black; anterior and posterior margins of pronotum black; elytra with yellow patches including two small, yellow, rounded humeral spots, wide median transverse bands interrupted at suture and extreme apex; apical yellow band of elytra very narrow, just a small, fine yellow line; scutellum black; legs with coxa, trochanter, femur and tibia pale reddish yellow, tarsal end of tibia reddish brown, first tarsi with middle portion yellow and rest reddish brown, tarsi 2–5 reddish brown; claws dark brown; underside of head completely yellow; lateral side of the thorax with pale reddish yellow spot in the form of “T”; <i>metasternum</i> reddish yellow posteriorly and reddish brown anteriorly; <i>metepisternum</i> reddish yellow; rest of the ventral region brownish black.</p> <p> <b>Head:</b> <i>Eyes</i> prominent and protruding; <i>labrum</i> convex anteriorly; <i>vertex</i> with long supra orbital setae. Third antennal segment longer than segments 1 and 2 combined. <i>Mandibles</i> wide but short, protruding beyond the labrum; mandibular scrobe unisetose. <i>Palpi</i> pubescent with terminal segment dilated. <i>Submentum</i> setose with 4–5 long and 10–12 short setae. <i>Gular</i> sutures diverging.</p> <p> <b>Pronotum:</b> Narrowed posteriorly; sides rounded in the anterior half and parallel behind; beaded dark lateral margin; anterior and posterior margin straight; disc finely punctate but glabrous except for very few brown setae along lateral edges; anterior and posterior margins each with a fringe of short dense setae</p> <p> <b>Elytra:</b> convex on sides; with almost erased humerus; base narrower than apex, broadest just before apex. All nine striations (counting from the suture) well marked. Elytra very sparsely punctate with 1–3 setae on each intervals and a row of short yet sparse setae near apex.</p> <p> <b>Abdomen:</b> finely pubescent.</p> <p> <b>Male Genitalia</b>: Aedeagus with median lobe stout, low degree of curvature (only slightly curved); apex round- ed, blunt.</p> <p> <b>Measurements</b>: <b>Holotype Male</b>, TLA= 20 mm; TLB= 17.7 mm; TW= 8.1 mm; PL = 3.6 mm; PW = 3.7 mm; EL = 10.2 mm. <b>Paratype Female</b>, TLA= 21 mm; TLB = 16.8 mm; TW= 7.2 mm; PL = 3.6 mm; PW = 3.5 mm; EL = 9.6 mm</p> <p> <b>Type material</b>: Holotype male: India: Tamil Nadu: Courtallam (8.930855°N, 77.268843°E), 14.X.2015, handpicked from under stones, coll. S.V. Akhil, deposited at ZSIC. Paratypes: 1 male, 4 females, Tamil Nadu, Courtallam (8.930855°N, 77.268843°E), 14.X.2015, from under stones</p> <p> <b>Geographical distribution.</b> India: Tamil Nadu: Courtallam (Moist south Western Ghats eco-region)</p> <p> <b>Collecting circumstances</b>: All the six specimens were handpicked from under stones near to a stream.</p> <p> <b>Etymology</b>: This species is named after the host research institution.</p> <p> <b>Remarks.</b> <i>Pherosophus devagiriensis</i> <b>sp. nov.</b> is very similar to <i>P. hilaris</i> but differs from it by head entirely yellow, pronotum with bright yellow spot not reaching the lateral margin, lateral margin black, pronontal median furrow deep, disc glabrous and shiny, elytral humeral spot very small, elytral yellow apical band narrow.</p>Published as part of <i>Venugopal, Akhil S. & Thomas, Sabu K., 2019, Bombardier beetles of the genus Pheropsophus Solier 1833 (Carabidae: Brachininae: Brachinini) from Indian subcontinent, pp. 65-89 in Zootaxa 4608 (1)</i> on pages 83-86, DOI: 10.11646/zootaxa.4608.1.3, <a href="http://zenodo.org/record/3993611">http://zenodo.org/record/3993611</a>
Entrepreneurial marketing in subsistence marketplaces
No full textThere are more than a billion poverty-stricken entrepreneurs in the world who run micro-enterprises to meet basic consumption needs. This pervasive phenomenon presents an interesting theoretical conundrum - that of consumer-entrepreneur duality. This duality blurs the boundaries between consumption and entrepreneurship, which have traditionally been distinct domains of scholarly inquiry. The research reported in this dissertation aims to a) provide a theoretical foundation for the notion of consumer-entrepreneur duality and b) test the implications of the aforementioned duality empirically. A key insight flowing from the investigations is that factors in the consumption domain impact important outcomes in the entrepreneurial domain and vice versa.Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2018-05-01The student, Srinivas Venugopal, accepted the attached license on 2016-04-18 at 08:47.The student, Srinivas Venugopal, submitted this Dissertation for approval on 2016-04-18 at 09:04.This Dissertation was approved for publication on 2016-04-19 at 08:14.DSpace SAF Submission Ingestion Package generated from Vireo submission #9286 on 2016-07-07 at 14:17:05Made available in DSpace on 2016-07-07T21:17:37Z (GMT). No. of bitstreams: 4
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Lewis Base Induced Reductions in Organolanthanide Chemistry
No full textBojer D, Venugopal A, Neumann B, Stammler H-G, Mitzel NW. Lewis Base Induced Reductions in Organolanthanide Chemistry. ANGEWANDTE CHEMIE-INTERNATIONAL EDITION. 2010;49(14):2611-2614
Studies on the properties of Vegetable oils and its blends.
No full textThis Dissertation / Report is the outcome of investigation carried out by the creator(s) / author(s) at the department/division of Central Food Technological Research Institute (CFTRI), Mysore mentioned below in this page
FIGURE 1 in Burmannia munnarensis (Burmanniaceae) a new species and rediscovery of B. indica after 110 years from southern Western Ghats, Kerala, India
No full textFIGURE 1. Burmannia munnarensis Dani & Nampy sp. nov., A. Habit; B. Scale leaf; C. Bract; D. Single flower; E. Upper part of flower split open showing perianth lobes and stamens; F. Outer perianth lobes; G. Inner perianth lobes; H. Stamen, see the two lateral thecae, apical crests and basal spur; I. Gynoecium; J. Seeds. (Drawn by Dani Francis from Dani Francis, Vishnu Mohan & Santhosh Nampy 173331).Published as part of Francis, Dani, Mohan, Vishnu, Venugopal, Divya K. & Nampy, Santhosh, 2021, Burmannia munnarensis (Burmanniaceae) a new species and rediscovery of B. indica after 110 years from southern Western Ghats, Kerala, India, pp. 105-112 in Phytotaxa 507 (1) on page 107, DOI: 10.11646/phytotaxa.507.1.6, http://zenodo.org/record/542554
DNA barcoding and morphological analyses reveal a cryptic species of Miniopterus from India and Sri Lanka
No full textKusuminda, Tharaka, Mannakkara, Amani, Ukuwela, Kanishka D. B., Kruskop, Sergei V., Amarasinghe, Chamara J., Saikia, Uttam, Venugopal, Parvathy, Karunarathna, Mathisha, Gamage, Rajika, Ruedi, Manuel, Csorba, Gábor, Yapa, Wipula B., Patterson, Bruce D. (2022): DNA barcoding and morphological analyses reveal a cryptic species of Miniopterus from India and Sri Lanka. Acta Chiropterologica 24 (1): 1-17, DOI: 10.3161/15081109ACC2022.24.1.001, URL: http://dx.doi.org/10.3161/15081109acc2022.24.1.00
Geographic determinants of reported human Campylobacter infections in Scotland
No full text<p><b>Background:</b> Campylobacteriosis is the leading cause of bacterial gastroenteritis in most developed countries. People are exposed to infection from contaminated food and environmental sources. However, the translation of these exposures into infection in the human population remains incompletely understood. This relationship is further complicated by differences in the presentation of cases, their investigation, identification, and reporting; thus, the actual differences in risk must be considered alongside the artefactual differences.</p>
<p><b>Methods:</b> Data on 33,967 confirmed Campylobacter infections in mainland Scotland between 2000 and 2006 (inclusive) that were spatially referenced to the postcode sector level were analysed. Risk factors including the Carstairs index of social deprivation, the easting and northing of the centroid of the postcode sector, measures of livestock density by species and population density were tested in univariate screening using a non-spatial generalised linear model. The NHS Health Board of the case was included as a random effect in this final model. Subsequently, a spatial generalised linear mixed model (GLMM) was constructed and age-stratified sensitivity analysis was conducted on this model.</p>
<p><b>Results:</b> The spatial GLMM included the protective effects of the Carstairs index (relative risk (RR) = 0.965, 95% Confidence intervals (CIs) = 0.959, 0.971) and population density (RR = 0.945, 95% CIs = 0.916, 0.974. Following stratification by age group, population density had a significant protective effect (RR = 0.745, 95% CIs = 0.700, 0.792) for those under 15 but not for those aged 15 and older (RR = 0.982, 95% CIs = 0.951, 1.014). Once these predictors have been taken into account three NHS Health Boards remain at significantly greater risk (Grampian, Highland and Tayside) and two at significantly lower risk (Argyll and Ayrshire and Arran).</p>
<p><b>Conclusions:</b> The less deprived and children living in rural areas are at the greatest risk of being reported as a case of Campylobacter infection. However, this analysis cannot differentiate between actual risk and heterogeneities in individual reporting behaviour; nevertheless this paper has demonstrated that it is possible to explain the pattern of reported Campylobacter infections using both social and environmental predictors.</p>
Photoluminescence and Raman Scattering from Catalytically Grown ZnxCd1-xSe Alloy Nanowires
No full textNumerical modelling of full scale tidal turbines using the actuator disc approach
No full textIn recent years, the actuator disc approach which employs the Reynolds-Averaged
Navier-Stokes (RANS) solvers has been extensively applied in wind and tidal energy
field to estimate the wake of a horizontal axis turbine. This method is simpler to administer
and requires moderate computational resources in modelling a tidal turbines rotor.
Nonetheless, the use of actuator disc approximation in predicting the performance
of tidal devices has been limited to studies involving an extremely small disc (e.g.
rotor diameter of 0.1 meter). The drawback of a small scale actuator disc model is the
overestimation of essential parameters such as the mesh density and the resolution of
the vertical layers, making them impractical to be replicated in a regional scale model.
Hence, this study aims to explore the methodology on implementation of the Three-
Dimensional (3D) actuator disc-RANS model in an ocean scale simulation. Additionally,
this study also aspires to examine the sensitivity of the applied momentum source
term and its validity in representing full-size tidal devices. Nonetheless, before the
effectiveness of an actuator disc in a regional model can be tested, tidal flow models
for the area of interest needed to be set up first. This was essential for two reasons: (a) to
ensure accurate hydrodynamic flow conditions at the deployment site were replicated,
(b) to give confidence in the outputs produced by the regional scale actuator disc
simulations, since in-situ turbine measurement data from a real deployment site were
difficult to source.
This research was undertaken in two stages; in the first stage, a numerical model which
can simulate the tidal flow conditions of the deployment sites was constructed, and, in
the second stage, the actuator disc method which is capable of modelling an array of
real scale-sized tidal turbines rotors has been implemented.
In the first stage, tidal flow simulations of the Pentland Firth and Orkney Waters
(PFOW) were conducted using two distinct open-source software – Telemac3D, which
is a finite element based numerical model, and Delft3D, which is a finite difference
based model. Detailed methodologies in developing a 3D tidal flow model for the
PFOW using both numerical models were presented, where their functionality, as well
as limitations were explored. In the calibration and validation processes, both models
demonstrated excellent comparison against the measured data. However, Telemac3D
was selected for further modelling of the actuator disc considering the model’s capability
to perform parallel computing, together with its flexibility to combine both
structured and unstructured mesh.
In the second stage, to examine the actuator disc’s accuracy in modelling a full size
tidal device, the momentum source term was initially applied in an idealised channel
study, where the presence of a 20-meter diameter turbine was simulated for both
single and array configurations. The following parameters were investigated: (i) size
of the unstructured mesh utilised in the computational domain, (ii) variation in disc’s
thickness, (iii) resolution of the imposed structured grid to represent turbine’s enclosure,
(iv) variation in the vertical layers, and (v) influence of hydrostatic and non-hydrostatic
formulations on the models’ outputs. It is to be noted that the turbine’s
support structures have not been included in the modelling.
The predicted velocities and computed turbulence intensities from the models were
compared against laboratory measurement data sourced from literature, where excellent
agreement between the model outputs and the data from literature was observed.
In essence, these studies highlighted the efficiency and robustness of the applied momentum
source term in replicating the wake profiles and turbulence characteristics
downstream of the disc, hence providing credence in implementing the actuator disc
method for a regional scale application.
Subsequently, the validated actuator disc method was applied to the Inner Sound region
of the Pentland Firth to simulate arrays of up to 32 tidal turbine rotors. The wake
development, flow interactions with the rotor arrays, and flow recovery at the Inner
Sound region have been successfully mapped. Also, this study highlighted the importance
of employing optimal numerical margins, specifically for the structured grid and
horizontal planes, as both parameters were relevant in defining the disc’s swept area. As
published materials on the implementation of actuator disc approach within a regional
scale model is still scarce, it was aspired that this work could provide some evidence,
guidance and examples of suggested best practice in effort to fill the research gap in
modelling tidal turbine arrays using the actuator disc approach
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