116 research outputs found
A new species of the genus Clypeuspinus Balkenohl, 2021 (Coleoptera: Carabidae Scaritinae) from India
No full textNeethu, V.P., Sabu, K. Thomas (2023): A new species of the genus Clypeuspinus Balkenohl, 2021 (Coleoptera: Carabidae Scaritinae) from India. Zootaxa 5296 (4): 589-594, DOI: 10.11646/zootaxa.5296.4.8, URL: http://dx.doi.org/10.11646/zootaxa.5296.4.
Clypeuspinus devagiriensis Neethu & Sabu 2023, sp. nov.
No full text<i>Clypeuspinus devagiriensis</i> sp. nov. <p>(Fig. 3A–E)</p> <p> <b>Type material.</b> Holotype male, Paratypes 4 ex. (2 males; 2 females). Labelled: “ India: Kerala: Mavoor wetland, Palliyol (11.2604° N, 75.9391° E), ‘Light trap’, 21.ix.2021. coll. V. P. Neethu ”, deposited in ZSIK.</p> <p> <b>Description.</b> Dorsal and ventral habitus as in Fig. 3A, B.</p> <p>Head, pronotum, elytral margin, elytral suture, profemurs and tibiae dark reddish brown. Meso and metacoxae, femurs and metatrochanters light reddish-brown. Antennae, labial palpi, maxillary palpi, protarsomers, meso and metatibiae and tarsomeres yellowish brown. Elytral disc black. Abdominal ventrites dark brown.</p> <p>Head elongated, smaller than pronotum. Surface smooth, with scattered micropunctures. Labrum three setose with isodiametric meshes. Clypeus straight, margin not bordered, clypeal suture indistinct, wings extending forward and rounded at apex, obtuse emargination between clypeus and clypeal wings blunt, clypeal setigerous punctures situated at anterior part of frontal furrows. Supra antennal plates elongate with reflexed margin in posterior half. Frons elongated and convex, frontal furrows deep. Vertex convex with fine micropuntures. Supra orbital carinae sharp. Supra orbital furrows deep and wide, with two supra orbital setae. Eyes normally developed, genae as long as eyes. Neck constriction complete, composed of large punctures. Antennae reaching up to middle of pronotum, pubescent from third antennomere onwards, antennomeres four to eleven moniliform, pedicellus attached eccentrically to scapus, scapus with setae at apical quarter. Mandibles elongated and curved apically. Apical maxillary palpomeres elongated, slightly securiform, with slightly truncated end. Penultimate labial palpomeres bisetose. Mentum and submentum separated. Mentum wide with two pairs of setae (a pair towards base of median tooth, another pair towards base of mentum), median tooth moderately wide and truncate at apex, projecting as far as lateral lobes, lateral lobes wide with rugose surface. Submentum quadrisetose. Genae with dense rugosities.</p> <p>Pronotum pentagonal in shape, moderately convex, surface glabrous, glossy with scattered micropunctures and transverse wrinkles, front angles produced, hind angles with a small denticle breaking through the outline, anterior transverse line deep and well impressed with large punctures, median line deep and wide, joining with basal constriction, lateral channel widened between two lateral setigerous punctures. Reflexed lateral margins, flange carinate.</p> <p>Elytra moderately convex, elongate, nearly parallel, well-marked shoulders with distinct humeral tooth, scutellar strioles moderately developed, striae deep and punctuated, stria one joining to setigerous basal tubercle, striae two and three free at base, striae four and five fused at base, striae one and seven reaching apex, interval eight carinate from humerus to apex, intervals six and seven carinate at humerus only, intervals two, three and four with distinct basal tubercle, interval three with two setigerous punctures close to third stria, with reflexed lateral margins, marginal channels with uninterrupted series of setigerous punctures, extreme apex of elytra with isodiametric meshes. Hind wings fully developed</p> <p>Ventral side (Fig. 3B): Prosternal surface rugose, with isodiametric meshes at disc. Proepisternum with coarse punctures and rugosities. Prosternal process wide. Metasternum glossy, with transverse wrinkles and micropunctures. Metepisternum longer than wide. Abdominal ventrites smooth and glossy, third to fifth ventrites with a pair of median setae, last ventrite with variable number of median setae (ranges from zero to three) and with a pair of widely separated apical setigerous punctures on each side.</p> <p>Protibiae with three terminal spines, slender, curved laterally. Metatibiae with long protuberance preapically furnished with seta. Claws simple. Tarsomeres not widened in both sexes.</p> <p>Male genitalia: Median lobe well curved, pointed towards apex, right paramere wider than left paramere, both parameres bisetose at apex (Fig. 3C–E).</p> <p>Sexual dimorphism: Not externally visible.</p> <p> <b>Measurements.</b> Holotype (male), TLB = 6.06 mm, PL = 1.52 mm, PW = 1.55 mm, EL = 3.30 mm, EW = 1.73 mm; Paratype <b>(</b> n=4 <b>),</b> TLB = 5.69–6.38 mm, PL = 1.41–1.61 mm, PW = 1.43–1.62 mm, EL = 3.08–3.53 mm, EW = 1.62–1.79 mm.</p> <p> <b>Etymology.</b> Named after the host institution's local name, Devagiri College.</p> <p> <b>Remarks.</b> Similar to <i>Clypeuspinus validus</i> but differs in the following characters: labrum three setose (five setose in <i>C. validus</i>); obtuse emargination between clypeus and clypeal wings blunt (obtuse emargination between clypeus and clypeal wings sharp in <i>C. validus</i>); supraorbital carinae sharp blunt in <i>C. validus</i>); elytra elongate and nearly parallel (subelongate in <i>C. validus</i>); third elytral interval with two setigerous punctures (in <i>C. validus</i>, third interval of left elytron with three setigerous punctures and right elytron with four setigerous punctures); second, third and fourth intervals with distinct basal tubercle (only third interval with a distinct basal tubercle in <i>C. validus</i>).</p> <p> <b>Distribution.</b> INDIA: Kerala: Kozhikode: Mavoor, Palliyol.</p> <p> <i>Clypeuspinus devagiriensis</i> <b>sp. nov.</b> is the first species of the genus <i>Clypeuspinus</i> discovered from Indian mainland.</p>Published as part of <i>Neethu, V. P. & Sabu, K. Thomas, 2023, A new species of the genus Clypeuspinus Balkenohl, 2021 (Coleoptera: Carabidae Scaritinae) from India, pp. 589-594 in Zootaxa 5296 (4)</i> on pages 590-593, DOI: 10.11646/zootaxa.5296.4.8, <a href="http://zenodo.org/record/7984462">http://zenodo.org/record/7984462</a>
A Low Distortion Reversible Data Hiding Technique Using Improved PPVO Predictor
No full textAbstractReversible data hiding is a technique that embeds additional information into some distortion-unacceptable cover media, such as military images, in a reversible manner so that the original cover image can be restored after extraction of the hidden information. This work extends a recently proposed reversible data hiding (RDH) scheme of Qu et al. which is based on pixel-based pixel- value-ordering(PPVO) and prediction-error expansion. In Qu et al.’s method, each pixel is predicted using its sorted context pixels. In this work, the pixel neighborhood of each pixel is expanded to optimize the embedding performance in terms of capacity- distortion behavior. This can better exploit image redundancy; achieve superior embedding performance and low distortion. Thus, the proposed method is able to embed adequate data into a cover image with limited distortion. The superiority of this predictor is verified through extensive experimental results. The proposed method outperforms prior works in terms of PSNR. The PSNR of a modified image versus its original one is guaranteed to be above 57.0dB
Computational Data supporting "Porous covalent organic nanotubes and their assembly in loops and toroids"
No full textComputational research data supporting the article:
Kalipada Koner, Shayan Karak, Sharath Kandambeth, Suvendu Karak, Neethu Thomas, Luigi Leanza, Claudio Perego, Luca Pesce, Riccardo Capelli, Monika Moun, Monika Bhakar, Thalasseril G. Ajithkumar, Giovanni M. Pavan, and Rahul Banerjee, "Porous Covalent Organic Nanotubes and Toroids: A Carbon Nanotube Analogue
Reliability of Ultimate Limit State Design in Finite Elements and Compliance with Eurocode 7
No full textGeotechnical design problems may be characterized by a certain degree of uncertainty, due to insufficient soil data and transformation of test results in soil parameters. In common practice, engineers perform deterministic analyses according to design standards as Eurocode 7, where the uncertainties are taken into account through partial factors for loads and soil properties to attain certain specified target reliabilities. Forcomplexsoilstructureinteractionproblems, partialfactormethodis difficult to adopt, as the design standards consider geotechnical standards with singlefailuremechanism. ThisisespeciallyproblematicforUltimateLimitstatedesigns where both stiffness and strength properties are dominant. With the advent of limit state design philosophy in Eurocodes, the use of reliability methods in Finite Element Analysis for complex situations has become more and more of interest. Reliability analyses allow to explicitly define the single uncertainties in the model by using an appropriate probabilistic distribution for each source of uncertainty. The reliability index and the probability of failure with respect to a predefined condition are calculated. The problem with using reliability based probabilistic design is the absence of simple computational approaches that can be easily implemented. MonteCarlosimulationsarecommonly usedto solvesoil structureinteraction problems. For a large and complex soil-structure interaction problem, it is computationally intensive to complete even a single run. This practical disadvantage can be solved only by a computationally efficient method. A special purpose application to perform probabilistic analysis in PLAXIS 2D, called PROBANA has been recently developed at Plaxis B.V. PROBANA performs direct probabilistic calculations in the finite element framework, using First Order Reliability Method or Monte Carlo Method. In this thesis, PROBANA (FORM) is used to perform reliability analysis for three benchmarks, and the results from PROBANA – FORM are compared with Point Estimate Method (PEM) and other stochastic Methods. The results from FORM are found to be comparable with that of PEM. It is concludedthatPEMislessaccurateduetoassumptionsmadebyPEMintheunderlying output distribution and FORM is more accurate and practical as it is computationally less intensive compared to other stochastic methods such as the Monte Carlo analysis. An extensive comparison of the reliability based method with Eurocode design method shows possibilities to implement reliability methods with EC7. One such approach is proposed, and demonstrated with the benchmarks
Etude des procédés de valorisation de la biomasse par catalyse et matériaux fonctionnels
No full textLa conversion de la biomasse en produits chimiques et en matériaux fonctionnels est aujourd'hui un sujet d'intéressant croissant. Cette thèse se concentre sur deux voies clés de valorisation de la biomasse : la conversion par catalyse hétérogène de la biomasse en produits chimiques et la conversion directe de matières premières lignocellulosiques en matériaux fonctionnels. La première partie de la thèse étudie le comportement chimique et la stabilité de la Faujasite (FAU) de type Y durant les transformations impliquées dans la valorisation de la biomasse : échange ionique post-synthèse, calcination et traitement hydrothermal. La deuxième partie de la thèse porte sur les matériaux fonctionnels à base de lignocellulose pour la dépollution. Nous avons notamment mesuré les propriétés d'adsorption du bore de la cellulose microcristalline, de la lignine et de la résine polymère et les cinétiques d'adsorption du bore dans ces matériaux, ce qui est important pour développer des alternatives peu coûteuses pour la capture du bore. Enfin, une stratégie de double réticulation combinant réticulation covalente et ionique a été introduite pour développer des hydrogels de cellulose stables. Ces hydrogels présentent d'excellentes propriétés de stabilité, de réactivité au pH et d'échange d'ions. De façon générale, ces travaux de thèses s'appuient sur des techniques de caractérisation multi-échelles, dont notamment la spectroscopie RMN du solide à très hauts champs magnétiques (jusqu'à 28,8 T) qui nous a permis de mieux comprendre les structures à l'échelle atomiques des matériaux impliqués dans la valorisation de la biomasse et des matériaux fonctionnels bio-dérivés. Ces informations sont précieuses pour concevoir des processus catalytiques plus efficaces et des matériaux plus performants.The conversion of biomass into chemicals and functional materials is a topic of expanding scope and importance. This thesis focuses on two key biomass valorisation pathways: the heterogeneous catalytic conversion of biomass into chemicals and the direct conversion of lignocellulosic feedstock into functional materials. The first part of the thesis investigates the chemical behaviour and stability of Faujasite (FAU)-type zeolites under post-synthesis ion-exchange, calcination, and hydrothermal treatments relevant to biomass catalysis. The second part of the thesis focuses on lignocellulose-based functional materials for environmental remediation. The boron adsorption properties of microcrystalline cellulose, lignin, and polymeric resin and their boron adsorption kinetics, significant for developing inexpensive alternatives for boron capture, are examined. In addition, a dual cross-linking strategy combining covalent and ionic cross linking was introduced to develop stable cellulose hydrogels. These hydrogels exhibit excellent stability, pH responsiveness, and ion-exchange properties. In so doing, this thesis demonstrates multiscale characterization techniques, including solid-state NMR spectroscopy at high magnetic fields (up to 28.8 T) for understanding the structural aspects of materials involved in biomass vaporization and bio-derived functional materials
Sensitivity Analysis of Rectangular Microcantilever Structure with Piezoresistive Detection Technique Using Coventorware FEA
No full textAbstractMicro Electro Mechanical Systems (MEMS) based microcantilever is a micromachined device similar to the miniaturized version of a diver's board, longer as compared to width, and has a thickness much smaller than its length or width. The merits of MEMS microcantilever sensors are its high sensitivity, design simplicity, portability and high speed. In this paper, a microcantilever sensor is designed to meet the requirements of a biosensor that detects tuberculosis. The addition of mass on the microcantilever surface makes it to bend and its stressed elements deform.The deflection underwent by microcantilever is detected by piezoresistive detection mechanism. The behavior of piezoresistive microcantilever structure is investigated using various beam materials and geometric dimensions. The advantage of incorporating SCR (Stress Concentrated Region) on the piezoresistive microcantilever is studied and the optimal position of placing the piezoresistor on the microcantilever beam is investigated using load analysis and corresponding stress distribution results. CoventorWare® is used to do the analysis of micromachined cantilever. The results show that sensitivity increases with increase in length and incorporation of SCR but decreases with increase in thickness
Physical and Chemical Properties of Oil.
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
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