3,045 research outputs found
Bactrocera (Bactrocera) digressa Radhakrishnan (in Drew & Romig 2013
No full textBactrocera (Bactrocera) digressa Radhakrishnan Bactrocera (Bactrocera) digressa Radhakrishnan, 1999: 1. Bactrocera (Daculus) yercaudiae Drew (in Drew & Raghu, 2002) 2002: 346. (synonymised by David & Ramani, 2011). Bactrocera (Daculus) digressa Radhakrishnan (in Drew & Romig, 2013: 199). Bactrocera (Bactrocera) digressa Radhakrishnan (in Hancock, 2015: 42). Material examined: 5♀♀, INDIA, Karnataka, Gowribidanur, Kolar, 23.vii. 2007, Naveen Kumar, V., 1♂, INDIA, Karnataka, Bangalore, Attur farm, 18.ii.2013, David, K. J., 1♂, INDIA, Karnataka, Bangalore, Hebbal, 13.ii.2013, David, K. J., 1♂, INDIA, Karnataka, Bangalore, Hebbal, 30.xi.2012, David, K. J. (NBAIR). Diagnosis: Male with epandrium and surstyli oval in outline (posterior view) (Fig. 5H), Lateral surstylus shorter than epandrium; posterior lobe of surstylus blunt (in profile view), curved in, as long as anterior lobe (Fig. 3H). Proctiger membranous, quadrate and smaller than epandrium (Fig. 3H). Medial surstylus, longer than lateral surstylus with a pair of thick prensisetae (Fig. 5H). Phallus 3.5 mm long, excluding glans (0.4 mm); 0.75 of glans sclerotised with unpatterned praeputium; subapical lobe and basal lobe present (Fig. 8H). Female with reddishbrown, dorsoventrally flattened oviscape (1.05 mm); eversible membrane (1.06 mm) with spicules on distal end having 1̄3 sharp projections (Fig. 11F); aculeus short (0.9 mm) with bifid apex and four pairs of preapical setae (Fig. 13F); two black convoluted berry shaped spermathecae (Fig. 15E).Published as part of David, K. J. & Ramani, S., 2019, New species, redescriptions and phylogenetic revision of tribe Dacini (Diptera: Tephritidae: Dacinae) from India based on morphological characters, pp. 101-146 in Zootaxa 4551 (2) on page 118, DOI: 10.11646/zootaxa.4551.2.1, http://zenodo.org/record/262263
Bactrocera (Bactrocera) digressa Radhakrishnan, s.str.
No full textBactrocera (Bactrocera) digressa Radhakrishnan Bactrocera (Bactrocera) digressa Radhakrishnan, 1999. Rec.Zool.Surv. India, 97(4):1. Holotype ♀. India (Tamil Nadu: Salem dist., Shevroy Hills, Semmanathan) (ZSI) [not examined] Bactrocera (Daculus) yercaudiae Drew, 2002. Raffles Bull.Zool., 50(2): 346. Holotype ♂. India (Tamil Nadu: Yercaud, 15 Km from Yercaud) (BMNH) [not examined]; syn.nov. Material examined INDIA: Karnataka: 11 ♂, Bangalore, 916m, 10.vii.1989, S. Ramani; 2 ♂, same data except 11.vii.1989; 1 ♂, same data except 4.ii.1989; 2 ♂, same data except 3.vii.1988, G. Bhat; 3 ♂, Bangalore, Hessaraghatta, 916m, 14.iii.1987, G. Bhat; 3 ♂ same data except 23.i.1988; 2 ♂ same data except 9.vii.1988; 2 ♂, 1♀, Bangalore, GKVK, 4.ii.2008, David, K. J.; 1 ♂, same data except 20.i.2008; 1 ♂, same data except 8.vi.2008, Sudha, M.; 1 ♂, Gouribidanur, 29.vi.2009, Praveen; 1 ♂, Mandya, 24-30.vii.1989, Gubbaiah; 2 ♂, Tamil Nadu, Yercaud, 3.vii.1992, S. Ramani (UASB); 2 ♀, Karnataka, Gowribidanur, Kolar, 23.vii.07, Naveen Kumar (NBAII). Radhakrishnan (1999) described Bactrocera digressa based on two females collected from Salem district, Tamil Nadu. The diagnostic characters of the species are reddish brown scutum, bifid aculeus tip, absence of acrostichal and anterior supra-alar setae. Later, Drew and Raghu (2002) described Bactrocera (Daculus) yercaudiae based on males collected from Yercaud, Tamil Nadu and Bangalore which responded to cue lure. Perusal of original description of the two species showed complete congruence of characters except costal band, which was mentioned as confluent with vein R 2+ 3 in Bactrocera digressa and slightly overlapping R in B. yercaudiae. Material mentioned above which were keyed out as Bactrocera yercaudiae were examined to confirm the identity. Examination of aculeus tip of the females revealed that it has a bifid aculeus and all the characters are in concordance with that of B. digressa except for a slightly overlapping costal band which might have been overlooked by Radhakrishnan (1999) because it is very faint beyond vein R 2+3. Hence we propose B. yercaudiae as a junior synonymn of B. digressa. Since all the Asian species in subgenus Daculus are aberrant Bactrocera s.str. and true Daculus are African, B. digressa is retained in subgenus Bactrocera (Copeland et al., 2004). As per ICZN rules, Bactrocera digressa Radhakrishnan is the valid name. Three females have been reared from fruits of Alangium lamarkii collected from Yercaud, Tamil Nadu and are deposited in BMNH (Ian M. White, pers. comm.)Published as part of David, K. J. & Ramani, S., 2011, An illustrated key to fruit flies (Diptera: Tephritidae) from Peninsular India and the Andaman and Nicobar Islands, pp. 1-31 in Zootaxa 3021 on page 1
Force chains and networks: wet suspensions through dry granular eyes
No full textRecent advances in shear-thickening suspension rheology suggest a relation between (wet) suspension flow below jamming and (dry) granular physics. To probe this connection, we simulated the contact force networks in suspensions of non-Brownian spheres using the discrete element method (DEM), varying the particle friction coefficient and volume fraction. We find that force networks in these suspensions show quantitative similarities to those in jammed dry grains. As suspensions approach the jamming point, the extrapolated volume fraction and coordination number at jamming are similar to critical values obtained for isotropically compressed spheres. Similarly, the shape of the distribution of contact forces in flowing suspensions is remarkably similar to that found in granular packings, suggesting potential refinements for analytical mean field models for the rheology of shear thickening suspensions.README.md contains an overall description of the dataset in Markdown format. Descriptions of individual files are also given in the subfolders
M56-IM7 Corner Pressure Data
No full textThis data was obtained and analysed according to the methods described in the paper: "Tracking consolidation of out-of-autoclave prepreg corners using pressure sensors" by VK Maes, A Radhakrishnan, J Hartley, S Sykes, J Kratz published in Composites Part A: Applied Science and Manufacturing. 2022. https://doi.org/10.1016/j.compositesa.2022.10717
Efficacy of sugarcane bagasse to produce bacterial biofilm in water for fish culture
No full textThe present study has been conducted to understand the efficacy of sugarcane bagasse to produce bacterial biofilm in water. The study period was 90 days. Total Plate count (TPC) in water and substrate was estimated on nutrient agar at room temperature by spread plate method. The TPC in water was the highest (2.10 x 104 ml–1) after 45 days. The average TPC of bacteria on bagasse varied from 140.0 (15d) to 30.25 (90d) x104·g–1. The present study demonstrates that the sugarcane bagasse can produce more bacteria in water thereby the fish can effectively utilize biofilm grown on sugarcane bagasse and provision of a substrate reduces the need for artificial feed.---------------------------------------------------------------------------------------------------------Efficacy of sugarcane bagasse to produce bacterial biofilm in water for fish culture M.V. Radhakrishnan and E.SugumaranDepartment of Zoology, Annamalai University, Annamalainagar – 608 002, Tamilnadu, India *Corresponding Author, Email: [email protected] Cite This Article As: M.V. Radhakrishnan, E. Sugumaran. 2010. Efficacy of sugarcane bagasse to produce bacterial biofilm in water for fish culture. J. Ecobiotechnol. 2(2):41-44
An Improved Bound on the Zero-Error List-Decoding Capacity of the 4/3 Channel
No full textWe prove a new upper bound on the size of codes C 1,2,3,4
with the property that every four distinct codewords in C have a coordinate where they all differ. Specifically, we provide a self-contained proof that such codes have size at most 26n/19 + o(n), that is, rate bounded asymptotically by 6/19 ≤ 0.3158 (measured in bits). This improves the previous best upper bound of 0.3512 due to (Arikan 1994), which in turn improved the 0.375 bound that followed from general bounds for perfect hashing due to (Fredman and Komlós, 1984) and (Körner and Marton, 1988). Finally, using a combination of our approach with a simple idea which exploits powerful bounds on the minimum distance of codes in the Hamming space, we further improve the upper bound to 0.31477
Ionic-strength and temperature induced conformational-changes in mononucleosomes and oligonucleosomes
No full textPT: J; CR: ACKERSON BJ, 1978, J CHEM PHYS, V69, P684 RILL RL, 1978, METHOD CELL BIOL, V18, P69 SHAW BR, 1979, CHROMATIN STRUCTUR B, P427; NR: 3; TC: 3; J9: BIOPHYS J; PG: 3; GA: KM036Source type: Electronic(1
Impacts of Ta Buffer Layer and Cu-Ge-Te Composition on the Reliability of GeSe-Based CBRAM
No full textsponsorship: This work was supported by imec's Core Partner Industrial Affiliation Program on Emerging Memories. The review of this article was arranged by Editor P. Du. (Corresponding author: Janaki Radhakrishnan.) (imec's Core Partner Industrial Affiliation Program on Emerging Memories)status: Publishe
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