4,036 research outputs found
A new short brown unpatterned moray eel Gymnothorax andamanensis (Muraenidae: Muraeninae) from Andaman waters, India
No full textMohapatra, Anil, Kiruba-Sankar, R., Praveenraj, J., Mohanty, Swarup Ranjan (2019): A new short brown unpatterned moray eel Gymnothorax andamanensis (Muraenidae: Muraeninae) from Andaman waters, India. Zootaxa 4661 (1): 189-196, DOI: 10.11646/zootaxa.4661.1.1
Gymnothorax andamanensis Mohapatra & Kiruba-Sankar & Praveenraj & Mohanty 2019, sp. nov.
No full textGymnothorax andamanensis sp. nov. Proposed common name: Andaman brown moray (Figures 1–4 A, Table 1) Holotype. EBRC /ZSI F11227 [325 mm total length (TL)], Port Mout, Port Blair, South Andaman (11.659327°N; 92.696148°E]: 18 March 2019. Paratypes. CIARI /MF-05. [464 mm TL), date and place of collection: same as holotype. Diagnosis. This new species of moray eel belongs to the small, brown unpatterned group with the combination following of characters: dorsal-fin origin before gill opening, pre-anal length 2.1–2.2, jaw pores with black rim, two branchial pores, predorsal vertebrae 3, preanal vertebrae 57 and total vertebrae 135–136, teeth smooth, three large fang-like median intermaxillary teeth, biserial maxillary and uniserial vomerine teeth, and dentary teeth biserial, with two teeth on each side in the second row of the dentary. Description. A medium-sized, uniform brown moray with moderately elongate body, depth at gill opening 15.0–17.1 and at anus 16.0– 19.1 in TL; preanal length 2.1–2.2 in TL. Head small, 8.1 in TL; snout blunt, its length 4.4 in HL; jaws almost equal 2.2–2.4 in HL. Eye diameter of 6.7–7.6 in HL and located closure to rictus than the snout tip; interorbital space 6.7–8.8 in HL (Table 1). Anterior nostril tubular touching the tip of the snout, posterior nostril above the anterior margin of eye. Dorsal-fin origin before gill opening and closer to rictus than to gill opening. Pre-dorsal length 9.9–10.8 in total length. The dorsal fin origin is well before the 1st branchial pore. Anal fin starts from the anus. Both dorsal and anal fins high. Gill in a small diagonal slit located behind the dorsal fin origin and second branchial pore (Fig. 2). Teeth smooth, not serrated; intermaxillary teeth 11–12 on each side with alternate small and large teeth as shown in Fig. 3; 3 strong, curved median intermaxillary teeth placed almost equidistance from each other; maxillary teeth biserial, 19–20 on each side of outer row and 3 in each side of inner row; vomerine teeth uniserial with 9–10 teeth; lower jaw teeth with outer row of 26–28 teeth on each side and 2 inner teeth on each side near anterior end (Fig. 3). Head pores typical, supraorbital pores 3; infraorbital pores 4; mandibular pores 6; branchial pores 2, located above and before gill opening (Fig. 2). All head pores with black rim. Predorsal vertebrae 3, preanal vertebrae 57 and total vertebrae 135–136. Colour when fresh: body dark brown dorsally and slightly pale brown ventrally; (Figs. 1 & 4), both dorsal and anal fins body colour; eye ring whitish, jaw pores with black rim. When preserved, body uniformly brown, eye ring white. Distribution. Presently known only from the South Andaman, India. Etymology. The species is named “ andamanensis ” with reference to the Island from where it is collected.Published as part of Mohapatra, Anil, Kiruba-Sankar, R., Praveenraj, J. & Mohanty, Swarup Ranjan, 2019, A new short brown unpatterned moray eel Gymnothorax andamanensis (Muraenidae: Muraeninae) from Andaman waters, India, pp. 189-196 in Zootaxa 4661 (1) on pages 190-191, DOI: 10.11646/zootaxa.4661.1.11, http://zenodo.org/record/337847
Elastic Chains: Data and code
No full textData used in the figures in a paper "Dynamics of a long chain in turbulent flows: Impact of vortices," by J. R. Picardo, R. Singh, Samriddhi Sankar Ray, and D. Vincenzi. Philosophical Transactions of the Royal Society A (in press); ArXiv: 1912.11431.Please read the ReadMe file for help with the use of this data set. </div
Myoclonic Status in Nonprogressive Encephalopathies
No full textMyoclonic status in nonprogressive encephalopath
Epilepsy wth Myoclonic Absences and Epilepsy with Eyelid Myoclonia and Absences
No full textThe particular epileptic conditions outlined in this chapter are very different from each other. However, they share a similar age of onset and the presence of myoclonia. Both myoclonic absence (MA), and eyelid myoclonia with or without absence (ELMA or ELM), have a highly specifi c and recognizable video-EEG-polygraphic ictal pattern (if seen once, they will never be confused with other conditions). Moreover, like absence seizures, which can be seen in different epileptic conditions but represent the hallmark of a distinct syndromic entity, namely childhood absence epilepsy (see Chapters 19 and 21), both MA and ELM/ELMA can be observed in different epilepsies but are the distinguishing features of syndromic entities that are labeled by the characteristic seizure type or named Tassinari syndrome and Jeavons syndrome, respectively
Single step, solvent-free processes: examples and prospects
No full textAn outline is given of some of the options now available — and likely to be of growing importance — for various of ways in which inorganic catalysts may be developed to effect industrially important chemical reactions in environmentally more acceptable means. One major goal is to devise ways of producing in situ (within the sphere of reaction) aggressive oxidants especially those that are environmentally hazardous. Two specific examples are cited: 1) one involves hydroxylamine, generated in a benign fashion, so as to effect the ammoximation of cyclohexanone to its oxime and -caprolactam; 2) the other involves the Baeyer—Villiger reaction (for converting cyclic ketones to lactones) via perbenzoic acid. The role of supported bimetallic catalysts in solvent-free hydrogenations (especially of polyenes) is also highlighted
Mixed-metal clusters as precursors for nanoparticle bimetallic catalysts embedded in mesoporous silica MCM-41
No full textBenign by design. New catalysts for an environmentally conscious age
No full textThere is a pressing need for: (i) cleaner fuels (free of aromatics and of minimal sulfur content) or ones that convert chemical energy directly to electricity, silently and without production of noxious oxides and particulates; (ii) chemical, petrochemical, and pharmaceutical processes that may be conducted in a one-step, solvent-free manner, and that use air as the preferred oxidant; and (iii) industrial processes that minimize consumption of energy, production of waste or the use of corrosive, explosive, volatile and nonbiodegradable materials. All these needs and other desiderata, such as the in situ production and containment of aggressive and hazardous reagents, and the avoidance of use of ecologically harmful elements, may be achieved by designing the appropriate heterogeneous inorganic catalyst, which, ideally should be cheap, readily preparable, and fully characterizable, preferably under in situ reaction conditions. A range of nanoporous and nanoparticle catalysts, designed, synthesized, characterized, and tested by the authors and their colleagues, that meet most of the stringent demands of sustainable development and responsible (clean) technologyis described. Specific examples that are highlighted include: (a) the production ofadipic acid (precursor of polyamides and urethanes) without the use of concentrated nitric acid or the production of greenhouse gases such as nitrous oxide; (b) the production of caprolactam (precursor of nylon) without the use of oleum and hydroxylamine sulfate; and (c) the terminal oxyfunctionalization of linear alkanes in air. The topic of biocatalysis and sustainable development is also briefly discussed, and a cautionary note is sounded concerning fast screening methods for the discovery of new inorganic catalysts
High-performance nanocatalysts for single-step hydrogenations
No full textThis article discusses the usage of nanoporous silica support for anchoring bimetallic nanoparticle catalysts, which display high activity and selectivity in single-step hydrogenation reactions. Research reveals that the methodology is applicable to other solids possessing nanopores in the range of 3-30 nanometers, such as carbon nanoporous arrays for dispersing platinum nanoparticle
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