80 research outputs found
Prosopistoma someshwarensis Ramya Roopa, Selvakumar & Subramanian, n. sp.
No full textProsopistoma someshwarensis Ramya Roopa, Selvakumar & Subramanian n. sp. Figs. 2–12 Material examined. Holotype: mature larva, INDIA, Karnataka, Someshwara Wildlife Sanctuary, Seethanadi river, Dulli Hole, 13°28’49.82’’ N, 075°02’43.77’’ E, 91 m, 04.III.2016, Coll. S. Ramya Roopa [ZSISRC-I/E 19]. Paratypes: 2 mature larvae, same data as holotype [ZSISRC-I/E 20]; 15 mature larvae, INDIA, Karnataka, Someshwara Wildlife Sanctuary, Seethanadi river, Yele Hole, 13°32’18.48’’ N, 075°04’43.14’’ E, 676 m, 06.VI.2015, 28.XII.2015, 17.III.2016, Coll. S. Ramya Roopa; 3 mature larvae, INDIA, Karnataka, Someshwara Wildlife Sanctuary, Seethanadi river, Onakeabbi falls, 13°30’46.41’’ N, 075°04’31.04’’ E, 597 m, 01.VI.2015, Coll. S. Ramya Roopa; 3 mature larvae, INDIA, Karnataka, Someshwara Wildlife Sanctuary, Seethanadi river, Onakeabbi falls, 13°30’27.07’’ N, 075°05’17.06’’ E, 655 m, 25.XI.2015, Coll. S. Ramya Roopa. Description. Mature larva. Body length 4–4.5 mm excluding caudal filaments. Head uniformly reddish brown with median ocellus between antennae, width approximately 2.5 times length. Epicranial sutures clearly visible, passing through lateral ocelli and anterior margin of compound eyes, continuing to lateral margin of head (Fig. 2 A). Carapace general coloration reddish brown, with one pale-coloured circular depression on each side of midline of anterior region of carapace, present at approximately 0.26 times length of carapace from posterior margin of head (Fig. 2 B) and with many dark ridges including few ridges resembling longitudinal lines on surface (Fig. 2 C). Head. Antenna (Fig. 4) 7-segmented including scape and pedicel, longer than distance from antennal base to anterior margin of head; segment III longest and shorter than combined length of segments IV–VII. Labrum (Fig. 6) prominent when larva viewed dorsally, narrow, approximately 3.7 times wider than long, anterior margin fringed with dense fine setae. Left and right mandibles similar. Outer canine of mandibles longer and broader than inner canine, with three apical teeth, outer tooth small, inner tooth larger with margin serrated near apex with 4–5 small spines; inner canine with two apical teeth, inner one slightly larger, inner margin serrated near apex with 3–5 spines. 8–10 long serrated bristles arising from base of inner canine. Single stout, feathered seta present lateromedially on each mandible (Fig. 5). Maxillae (Fig. 7) crowned by rigid canine and three subequal moveable dentisetae; three long feathered, stout bristles arising near base of apical canine and dentisetae on galea-lacinia. Single unserrated bristle arising about two-thirds of way down sclerotized section of galea-lacinia. Length ratio of maxillary palp segments from basal one to apical one: 1.9:3.2:1. Labial palpi 3-segmented, length ratio of labial palp segments from basal one to apical one: 2:1.65:1 (Fig. 8). Legs. Dorsal margin of fore femur with 20 or 21 simple, short, feathery setae; ventral margin of fore tibia with 14 or 15 pectinate setae (Fig. 9). Tarsal claws of all three pairs of legs without denticles. Abdomen. Abdominal gills I–VI. Gill I large and branched (Fig. 10). Gill II broad, leaf-like and unbranched (Fig. 11). Gills III–V with multiple branching filaments (Fig. 12). Gill VI tiny, unbranched. Posterolateral projections of abdominal segments VII–IX broad, apex pointed (Figs. 2 & 3). Three retractile, short and feathery caudal filaments present. Sub-imago and Imago. Unknown. Distribution. India (Central Western Ghats). Etymology. This species is named after the place of collection, Someshwara Wildlife Sanctuary, Karnataka, India. Diagnosis. Prosopistoma someshwarensis n. sp. is most similar to P. alaini Bojková & Soldán 2015, a recently described species from Algeria (Bojková & Soldán 2015). However, P. someshwarensis n. sp. can be distinguished from all other species of Prosopistoma, including P. alaini, by the following combination of characters: (i) antenna 7-segmented including scape and pedicel; segment III the longest and shorter than combined length of segments IV–VII (Fig. 4); (ii) epicranial sutures clearly visible, passing through anterior margin of lateral ocelli and between compound eyes and antennal bases or through lateral ocelli and anterior margin of compound eyes, continuing to lateral margin of head (Fig. 2 A); (iii) carapace general coloration reddish brown, with one pale-coloured circular depression on each side of midline of anterior region of carapace (Fig. 2 B) and with few longitudinal line that looks like a ridge on its surface (Fig. 2 C); (iv) 8–10 long serrated bristles arising from the base of inner canine (Fig. 5); (v) ventral margin of fore-tibia with 14–15 pectinate setae (Fig. 9) and (vi) postero-lateral projections on abdominal segments VII–IX broad and apex pointed (Figs. 2 & 3). Ecology. The new species was collected from riffle habitat, underneath cobbles and gravel, in tributaries of the Seethanadi River, a west-flowing river in the central Western Ghats. The sampling sites were all located within tropical wet evergreen forests. The streams (Dulli Hole, Yele Hole and Onakeabbi falls) had average widths ranging from 0.92 m to 9.86 m and average depths ranging from 0.90 cm to 12.24 cm through the three seasons of sampling. The pH ranged from 6.26 to 8.48 and water temperature ranged from 20.8°C to 28.8°C.Published as part of Roopa, S. Ramya, Selvakumar, C., Subramanian, K. A. & Sivaramakrishnan, K. G., 2017, A new species of Prosopistoma Latreille, 1833 and redescription of P. indicum Peters, 1967 (Ephemeroptera: Prosopistomatidae) from the Western Ghats, India, pp. 591-599 in Zootaxa 4242 (3) on pages 593-595, DOI: 10.11646/zootaxa.4242.3.10, http://zenodo.org/record/37698
A new species of Prosopistoma Latreille, 1833 and redescription of P. indicum Peters, 1967 (Ephemeroptera: Prosopistomatidae) from the Western Ghats, India
No full textRoopa, S. Ramya, Selvakumar, C., Subramanian, K. A., Sivaramakrishnan, K. G. (2017): A new species of Prosopistoma Latreille, 1833 and redescription of P. indicum Peters, 1967 (Ephemeroptera: Prosopistomatidae) from the Western Ghats, India. Zootaxa 4242 (3): 591-599, DOI: https://doi.org/10.11646/zootaxa.4242.3.1
Structural studies of cytidine repressor and catabolite activator protein
No full textThe Escherichia Coli Catabolite Activator Protein (CAP) activates DNA transcription at more than a hundred promoters. Cytidine Repressor (CytR), in conjunction with two CAP dimers, acts as a repressor of DNA transcription at the deoP2 promoter. In the first part of this work, we describe a method by which a (CAP)[subscript] 2-CytR-DNA complex can be prepared for structural studies. In the second part of this project, we describe the crystallization of what was initially
intended to be a (CAP)[subscript] 2-DNA complex in order to study the effects of two CAP dimers on transcription at an artificially constructed promoter containing tandem CAP binding sites. Upon structure determination of the crystal, we observed that while there was no DNA present, the protein had bound multiple Co[superscript]2+ and SO2−/4 ligands. We provide an analysis of the crystal structure and present a possible explanation for the absence of DNA in the structure.M.S.Includes bibliographical referencesby Ramya Rangesh Ra
Knot theory addendum
No full textAt Right Angles met up with author Ramya to discuss her article on Knot Theory. Over coffee at Starbucks, Ramya adeptly made sense of a tangled bunch of wool which I had carried with me to try and see if Knot Theory could help me untangle the web
Prosopistoma
No full textKey to known mature larvae of Indian Prosopistoma species 1. Antennae with 6 segments; ventral margin of fore tibia with 6–8 pectinate setae; carapace general colouration yellowish or medium brown, with various yellow or orange markings (not circular); base of inner canine of mandible with 2 or 3 long bristles.................................................................................................2 - Antennae with 7 segments; ventral margin of fore tibia with 14–15 pectinate setae; carapace general coloration reddish brown, with one pale-coloured circular depression on each side of midline of anterior region of carapace; base of inner canine of mandible with 8–10 long bristles.......................................................... P. someshwarensis n. sp. 2. Carapace general coloration yellowish brown with an irregular (zig-zag) yellow pattern; base of inner canine of mandible with 3 long bristles; gill II leaf-like and unbranched............................................. P. indicum Peters 1967 - Carapace general coloration medium brown, with 4 distinctive orange markings present on each side of midline of the carapace; base of inner canine of mandible with 2 long bristles; gill II leaf-like and cleft................................................................................................... P. coorgum Balachandran & Anbalagan 2016Published as part of Roopa, S. Ramya, Selvakumar, C., Subramanian, K. A. & Sivaramakrishnan, K. G., 2017, A new species of Prosopistoma Latreille, 1833 and redescription of P. indicum Peters, 1967 (Ephemeroptera: Prosopistomatidae) from the Western Ghats, India, pp. 591-599 in Zootaxa 4242 (3) on page 598, DOI: 10.11646/zootaxa.4242.3.10, http://zenodo.org/record/37698
Mythology in Children’s Literature: A Narrative Study on Roopa Pai’s Gita
No full textThe function of conveying a culture’s myth to its younger generation is a very delicate process. Myth is a mixture of fact and fantasy and it is the duty of an adult reteller to convey the right ideas in a right manner to the children. Creating mythological retellings for children involves a multi-levelled process: filtering the myth to make it child-appropriate, structuring it in an attractive format and delivering a content relatable for the kids. Roopa Pai, an Indian writer for children, came out with a book titled Gita: For Children (2015), which retells the Bhagvad Gita of the Mahabharata. The Bhagvad Gita, being a book of complex philosophies, is difficult enough to be explained to adults. Hence, it takes a deeper understanding of the source text and also the psyche of children to come out with a work like that. The objective of this paper is to analyse the narrative technique that Pai has followed in Gita: For Children in order to break down a culture’s mythology into a digestible form for the younger generation. The methodology for the study would be a narrative analysis of the primary text. It was identified from the study that Pai constructs a three-layered structure in the text: a) a background insight into the story, where she describes the context and adds additional information on elements seen in the story b) the narration of the story c) explaining the facts of the story with examples relatable for the children. This third structure involves a concept called Applied Mythology. It explains how myth is applicable in the contemporary world. It is also observed that there are three parallel conversations throughout the text: a) the one between Krishna and Arjuna b) the one between Sanjaya and Dritarashtra and c) the one between Pai and her readers. In this third category, Pai uses the technique called ‘breaking the fourth wall’. Here, Pai comes out of her veil as a distant narrator and directly talks to her target audience, the children. While most authors claim it is more difficult to write for children than for adults, this study shall help understand the different narrative strategies that Pai employs in the text to simplify complex philosophies of life for children
Water mass classification using band ratios
No full textThe Hudson River plume has been the topic of consideration and observation in order to try and understand the physical, chemical and biological behavior of the plume which is a key component of the oceanography of the Mid-Atlantic Bight (MAB) region off the east coast of the United States. One approach towards understanding the chlorophyll production for the plume would be to make use of satellite data to measure the optical ocean color properties of these waters. In this direction classifying the water masses of the Hudson River plume according to these optical properties would be an interesting method of analyzing the satellite data for the purpose of understanding and identifying the physical and biological changes and the correlation between them in this region.
The first step is to design and implement a water mass classification algorithm in the LaTTE (Lagrangian Transport and Transformation Experiment) region of the MAB. It takes about 1-2 weeks for the nutrients from the freshwater from the Hudson Estuary to be dissipated and mixed with the open ocean. This classification algorithm is developed using ocean color data from the Sea viewing WIde Field of view Sensor (SeaWiFS). The algorithm is validated by overlaying ship salinity tracks on the classified water masses to show that salinity values change at the boundaries of the classified regions, due to the mixing and export of freshwater across the shelf.
We analyze global Sea Surface Temperature (SST) data collected over the years 1995-2005 for summer and winter in order to find coastal estuarine ecosystems that may display similar behavior as the Hudson River Estuary. Looking at the seasonal variation in this data, we observe that the regions of MAB and the East Asian coast are found to have strikingly similar seasonal behavior.
This leads into the third and the last step of the process which involves applying the water mass classification algorithm to ocean color data from eastern coastal Asia. It is observed that the algorithm well in the seas of Okhotsk, Japan and East China where it is able to identify plume water and non river water.M.S.Includes bibliographical references (p. 86-92)
Prosopistoma indicum Peters 1967
No full textProsopistoma indicum Peters 1967 Figs. 13–23 Material examined. 6 mature larvae, INDIA, Karnataka, Someshwara Wildlife Sanctuary, Tunga river, Minu Hole, 13°34’42.28’’ N, 075°06’12.58’’ E, 665 m, 19.V.2015, Coll. S. Ramya Roopa [ZSISRC-I/E 21]. 1 larva, INDIA, Tamil Nadu, Tirunelveli, Gadana river, Kallar, 0 8o 48'04.5’’ N, 77o18'05.3’’ E, 144 m, 20.VII.2013, Colls. C. Selvakumar & P. Kumar [ZSISRC-I/E 22]. Description. Mature larva. Body length 2.1 mm excluding caudal filaments. Head yellowish brown with median ocellus between antennae; width approximately 2.4 times length. Epicranial sutures feeble, passing through posterior margin of lateral ocellus and weakly passing through anterior margin of compound eye, continuing to lateral margin of head. Carapace general coloration yellowish brown with irregular (zig-zag) yellow pattern at approximately 0.6 times length of carapace from posterior margin of head. Distal end of carapace concave over exhalent notch (Figs. 13). Head. Antenna (Fig. 15) 6-segmented including scape and pedicel, with segment III longest but shorter than combined length of segments IV–VI. Labrum (Fig. 16) narrow, approximately 4.3 times wider than long. Left and right mandibles similar. Outer canine of mandibles longer and broader than inner canine, with three sub-equal apical teeth, inner tooth serrated near apex with 3 spines; inner canine with two apical teeth, inner one slightly larger, outer margin serrated near apex with 1 or 2 spines and inner margin serrated near apex with 2 spines. 3 long serrated bristles arising from base of inner canine. Single stout feathered seta present lateromedially on each mandible (Fig. 17). Maxillae (Fig. 18) crowned by rigid canine and three subequal moveable dentisetae; three long feathered stout bristles arising near base of apical canine and dentisetae on galea-lacinia. Single unserrated bristle arising about two-thirds of way down sclerotized section of galea-lacinia. Length ratio of maxillary palp segments from basal one to apical one: 2.4:3.6:1. Labial palpi 3-segmented, length ratio of labial palp segments from basal one to apical one: 2.1:2.25:1 (Fig. 19). Legs. Ventral margin of fore tibia with 6–8 pectinate setae (Fig. 20). Tarsal claws of all three pairs of legs without denticles. Abdomen. Abdominal gills I–VI. Gill I large and branched (Fig. 21). Gill II broad, leaf-like and unbranched (Fig. 22). Gills III–V with multiple branching filaments (Fig. 23). Gill VI tiny, unbranched. Posterolateral projections of abdominal segments VII–IX broad, apex pointed. Three retractile, short and feathery caudal filaments present. Sub-imago and Imago. Unknown. Distribution. India (Western Ghats). Diagnosis. Prosopistoma indicum Peters, 1967 is most similar to P. coorgum Balachandran & Anbalagan 2016, a recently described species from South India. Common characters include (i) presence of 6-segmented antenna; (ii) carapace wider than long; (iii) distal end of carapace concave over exhalent notch; (iv) similar number of spines (3) on apex of inner margin of outer canine of mandibles; (v) similar number of spines (2) in P. indicum and 2-3 in P. coorgum on apex of inner margin of inner canine of mandibles; (vi) 3 long feathered stout bristles arising near base of apical canine and dentisetae on galea-lacinia; (vii) similar length ratio of labial palp segments from basal one to apical (2.1:2.25: 1 in P. indicum and 2:2.5: 1 in P. coorgum); and (viii) presence of 6–8 pectinate setae in the ventral margin of fore tibia. However, P. indicum may be distinguished from P. coorgum by the following combination of characters: (i) antennal segment III shorter than combined length of segments IV–VI (Fig. 15); (ii) carapace general coloration yellowish brown with an irregular (zig-zag) yellow pattern at approximately 0.6 times the length of the carapace from the posterior margin of head (Fig. 13); (iii) presence of 3 long serrated bristles at the base of inner canine (Fig. 17); and (iv) gill II broad, leaf-like and unbranched (Fig. 22). Ecology. Prosopistoma indicum specimens were collected from riffle areas, and in some instances pool areas, of river Minu Hole and its tributaries, inside and outside Someshwara Wildlife Sanctuary, Karnataka, India and Kallar, Gadana River, Tirunelveli, Tamil Nadu. Unlike P. someshwarensis n. sp. which was collected only from forest streams, this species was collected from varied landscapes—forest streams, streams adjoining agricultural land and plantations, and streams adjoining villages. These streams had average widths ranging from 0.245 m to 12.28 m and average depths ranging from 1.31 cm to 30.85 cm through the three seasons of sampling. The pH ranged from 6.78 to 8.3, and water temperature ranged from 21.9°C to 34.3°C.Published as part of Roopa, S. Ramya, Selvakumar, C., Subramanian, K. A. & Sivaramakrishnan, K. G., 2017, A new species of Prosopistoma Latreille, 1833 and redescription of P. indicum Peters, 1967 (Ephemeroptera: Prosopistomatidae) from the Western Ghats, India, pp. 591-599 in Zootaxa 4242 (3) on pages 595-598, DOI: 10.11646/zootaxa.4242.3.10, http://zenodo.org/record/37698
Sentiment analysis of big data with intensity analysis by rule engine, 2015
No full textThe use of social media is an emerging way for the public to express their views on companies and other organizations. The success of these entities can depend on a positive presence on social media, leading to an increasing interest in understanding public opinion expressed there. This thesis presents a method for gathering and storing a large number of social media posts, analyzing the sentiments expressed, and further classifying the specific emotions conveyed. The social media platform Twitter was used as a source of millions of publicly viewable posts. The big data software tools Twitter4j, Apache Hadoop, and Apache Hive were used to gather and store these posts. These were then classified as communicating a positive, negative, or neutral sentiment through the technique of sentiment analysis, performed using the tool Lingpipe. To further identify the particular emotions expressed in the Tweet, a rule engine, specifically the DROOLS software, was used
FLOWIDER 10 a webbased interface to track floodseason water levels of large rivers of Indias Gangetic plains
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