1,373 research outputs found
Sri Lalitha Navaratnam Maniadi Sastiram
No full textThe Sri Lalitha Navaratnam Manaiadi Sastiram is a work on housebuilding in prose from the Tamil speaking area of South India. It was compiled in
1914 and is said to be based on the teachings of the great sage Maya. It belongs to a genre of works on housebuilding circulated in the modern
languages of South Asia. Published in 1914
Ground vibrational inertia defect and centrifugal distortion constants of octahedral XY6 molecules and ions
No full textThe general inertia defect of nonplanar XY6 type of molecules and ions has been evaluated for the first time by applying the method suggested by Herschbach and Laurie. The centrifugal distortion constants have also been calculated for the above system.Dhanalakshmi A., Lalitha M. Ground vibrational inertia defect and centrifugal distortion constants of octahedral XY6 molecules and ions. In: Bulletin de la Classe des sciences, tome 68, 1982. pp. 249-258
Scymnus (Pullus) latifolius Poorani & Lalitha 2018, sp. nov.
No full text7. Scymnus (Pullus) latifolius Poorani, sp. nov. (FIGS 7–9) Diagnosis: THIS SPEcIES IS EXtERNAllY SIMIlAR tO SEVERAl SPEcIES OF Scymnus AND OtHER RElAtED GENERA FROM EAStERN AND NORtHEAStERN INDIA AND cAN bE RElIAblY IDENtIFIED ONlY bY tHE cOMbINAtION OF GENERIc cHARActERS AND tHE MAlE GENItAlIA. THE MAlE GENItAlIA (FIGS 7E–G, 8E–F) ARE UNIQUE IN HAVING tHE PENIS GUIDE OF tEGMEN (FIGS 7E, 8E) bROAD AND RObUSt, SHOVEl-SHAPED, APIcAllY WItH A SHORt, AcUtElY POINtED MEDIAN PROjEctION. Description: LENGtH: 1.24–1.30 MM; WIDtH: 0.92–1.00 MM. FORM (FIGS 7A, b, 8A) SHORt OVAl, cONVEX, DORSUM WItH DENSE SIlVERY WHItE PUbEScENcE. HEAD AND PRONOtUM DARk cAStANEOUS, ElYtRA DARk bROWN, APIcAl tHIRD lIGHtER, YEllOWISH tO tEStAcEOUS bROWN. VENtRAl SIDE (FIG. 7c) WItH ANtENNA YEllOWISH bROWN, PROStERNUM AND AbDOMEN YEllOWISH bROWN tO cAStANEOUS, lEGS YEllOWISH bROWN EXcEPt cOXAE SlIGHtlY DARkER, MESO- AND MEtAVENtRItE AND FIRSt AbDOMINAl VENtRItE AND MIDDlE OF VENtRItE 2 DARkER bROWN tO blAck. HEAD EVENlY PUNctAtE, EYES WIDElY SEPARAtED, INtEROcUlAR DIStANcE AbOUt 2× AS WIDE AS AN EYE. ANtENNA (FIG. 8c) cOMPOSED OF 11 ANtENNOMERES, NEARlY AS lONG AS INtEROcUlAR DIStANcE. PRONOtUM DENSElY PUNctAtE, PUNctURES SEPARAtED bY 1–3 DIAMEtERS. ElYtRA MORE DENSElY PUNctAtE tHAN PRONOtUM, PUNctURES SHAllOW AND SEPARAtED bY 1–2 DIAMEtERS, INtERSPAcES bEtWEEN PUNctURES cORIAcEOUS. PROStERNAl cARINAE (FIG. 8b) GRADUAllY DIVERGENt tOWARDS POStERIOR. MEtAVENtRItE WItH DIScRIMEN. AbDOMEN (FIG. 7D) WItH APPARENtlY FIVE VISIblE VENtRItES, SIXtH ONlY bARElY VISIblE, AbDOMINAl POStcOXAl lINE (FIGS 7D, 8D) cOMPlEtE, SHAllOWlY SEMIcIRcUlAR; AREA ENclOSED bY POStcOXAl lINE WItH SPARSE PUNctURES IN ANtERIOR HAlF, POStERIORlY SMOOtH. VENtRItE 5 POStERIORlY SHAllOWlY EMARGINAtE. MAlE GENItAlIA (FIGS 7E–G, 8E–F) WItH PENIS GUIDE OF tEGMEN IN VENtRAl VIEW (FIGS 7E–F, 8E) bROAD AND RObUSt, SOMEWHAt U-SHAPED, APIcAllY WItH A SHORt, AcUtElY POINtED MEDIAN PROjEctION; PARAMERES DIStINctlY lONGER tHAN PENIS GUIDE, APIcAllY NARROWED AND DENSElY clOtHED WItH ElONGAtE HAIRS; PENIS (FIGS 7G, 8F) WItH A WEll-DEVElOPED cAPSUlE AND A HOOk lIkE APEX. Female: EXtERNAllY SIMIlAR tO MAlE EXcEPt PRONOtUM DARkER; VENtRItE 5 POStERIORlY SUbtRUNcAtE, VENtRItE 6 GENtlY ARcUAtE. FEMAlE GENItAlIA (FIG. 7H) WItH cOXItES ElONGAtE tRIANGUlAR, SPERMAtHEcA WItH A tUbUlAR cORNU, INFUNDIbUlUM AbSENt. Specimens examined: Holotype, male. “INDIA: WESt BENGAl: CSRTI, BERHAMPORE, 24°05'28.8"N 88°15'56.4"E, lAbORAtORY REARED ON MUlbERRY MEAlYbUG, N. LAlItHA” (NBAIR); Paratypes: FIVE MAlES AND FIVE FEMAlES, WItH tHE SAME DAtA AS HOlOtYPE (NBAIR; NHM); TAMIl NADU: TRIcHY, NRCB FARM, PODAVUR, 4.X.2017, EX. Ferrisia virgata ON Solanum melongena, R. THANIGAIRAj. Other material: SEVERAl SPEcIMENS FROM tHE SAME lAbORAtORY cUltURE, WItH tHE SAME DAtA. Etymology: THE SPEcIFIc EPItHEt IS AN ADjEctIVE OF LAtIN ORIGIN AND REFERS tO tHE bROAD, SHOVEl-lIkE PENIS GUIDE OF tHE MAlE GENItAlIA. Distribution: INDIA: TAMIl NADU; WESt BENGAl. Taxonomic notes: SPEcIMENS OF tHIS SPEcIES IN tHE cOllEctIONS OF tHE ERStWHIlE COMMONWEAltH INStItUtE OF BIOlOGIcAl CONtROl–INDIAN StAtION At BANGAlORE (NOW ICAR–NAtIONAl BUREAU OF AGRIcUltURAl INSEct RESOURcES) WERE MISIDENtIFIED AS Scymnus apiciflavus MUlSANt. THIS SPEcIES HAS A SUPERFIcIAl RESEMblANcE tO S. apiciflavus, bUt cAN bE SEPARAtED bY tHE cOMPlEtE AbDOMINAl POStcOXAl lINES AND tHE MAlE GENItAlIA. Scymnus apiciflavus bElONGS tO tHE SUbGENUS Scymnus (Scymnus) KUGElANN AND It HAS bEEN ADEQUAtElY DEScRIbED AND IllUStRAtED bY SEVERAl WORkERS SUcH AS REN et al. (2009). THE cUltURE OF tHIS SPEcIES MAINtAINED At tHE CENtRAl SIlk RESEARcH INStItUtE, BERHAMPORE, WESt BENGAl, WAS MISIDENtIFIED AS ‘ Scymnus pallidicollis (MUlSANt)’ AND ‘ S. saciformis MOtScHUlSkY’ bY VARIOUS WORkERS AND tHE SAME NAMES HAVE bEEN ERRONEOUSlY APPlIED. Hosts: THIS SPEcIES WAS FOUND tO FEED ON M. hirsutus AND Paracoccus marginatus WIllIAMS & GRANARA DE WIllINk ON MUlbERRY IN FIElD cONDItIONS. BOtH MEAlYbUGS WERE PREFERRED tO OtHER MEAlYbUGS IN lAbORAtORY StUDIES ON HOSt PREFERENcE AS WEll. It SURVIVED ON OtHER MEAlYbUG PREY SUcH AS Phenacoccus solenopsis TINSlEY, P. madeirensis GREEN AND P. parvus MORRISON IN tHE lAbORAtORY, bUt ONlY PARtIAl PREDAtION OR NIbblING OF tHE ADUltS OF Phenacoccus SPP. WAS ObSERVED, RESUltING IN ADUlt MORtAlItY. THE jUVENIlE StAGES OF tHESE MEAlYbUGS WERE, HOWEVER, FUllY cONSUMED bY tHE cOccINEllID. SPEcIMENS OF tHIS SPEcIES cOllEctED FROM TAMIl NADU, SOUtH INDIA, WERE FOUND FEEDING ON Ferrisia virgata COckEREll ON EGGPlANt. Biology: THE EGGS (FIG. 9A) ARE EllIPtIcAl, tRANSlUcENt, PAlE YEllOWISH AND MEASURE 0.04 MM × 0.02 MM. THEY ARE lAID SINGlY AMONG tHE HOSt MEAlYbUG EGGS. THE EGG StAGE lAStS FOR 4–5 DAYS. THE lARVAl StAGE (FIGS 9b–D) HAS FOUR INStARS. NEWlY HAtcHED, FIRSt INStAR lARVAE ARE lIGHt YEllOW AND DEVElOP WHItE WAXY StRANDS WItHIN 2–3 HOURS AFtER HAtcHING. THE FIRSt INStAR lARVAE ARE PASSIVE cRAWlERS AND PREFER tO FEED ON tHE MEAlYbUG EGGS. THE SEcOND INStAR lARVAE ARE lIGHt YEllOW tO PINkISH WItH WHItE WAXY StRANDS AND ActIVElY FEED ON tHE EGGS AND cRAWlERS OF tHE MEAlYbUGS. THE tHIRD AND FOURtH INStAR lARVAE ARE FUllY AND DENSElY cOVERED WItH WHItE WAXY FIlAMENtS AND ActIVE PREDAtORS ON All StAGES OF tHE HOSt. THE FOUR lARVAl INStARS lASt FOR 1–2 DAYS, 1.5–2.5 DAYS, 1.5–3 DAYS, AND 2–4 DAYS, RESPEctIVElY. THE PRE-PUPAl StAGE cEASES FEEDING AND IS SlOW MOVING AND lAStS FOR 1–1.5 DAYS. THE PUPA (FIG. 9E) IS YEllOW AND cOVERED WItH WHItE WAXY FIlAMENtS AND GRADUAl SHEDDING OF WAXY StRANDS FROM tHE PUPAl cASE IS NOtIcED tOWARDS tHE END OF PUPAl PERIOD. THE PUPAl PERIOD lAStS FOR 6–9 DAYS. FRESHlY EMERGED ADUlt bEEtlES ARE FUllY lIGHt bROWN AND GRADUAllY tURN DARkER (FIGS 9F, G). FIRSt MAtING OccURS ON tHE 4th OR 5th DAY AFtER EMERGENcE AND cOPUlAtION lAStS FOR 4.5–6 MINUtES PER MAtING. PRE-OVIPOSItION PERIOD RANGES FROM 10 tO 12 DAYS AND OVIPOSItION PERIOD lAStS FOR 24–36 DAYS. THE ADUlt lONGEVItY IS 90–110 DAYS IN FEMAlES AND 80–103 DAYS IN MAlES. A SINGlE FEMAlE lAYS 26–32 EGGS ON AN AVERAGE DURING ItS lIFEtIME. THE tOtAl lIFE cYclE FROM EGG tO ADUlt IS 23–25 DAYS IN SUMMER AND 25–28 DAYS IN WINtER IN lAbORAtORY cONDItIONS.Published as part of Poorani, J. & Lalitha, N., 2018, Illustrated accounts of coccinellid predators of Maconellicoccus hirsutus (Green) (Hemiptera: Sternorrhyncha: Pseudococcidae) on mulberry in India, with description of a new species of Scymnus Kugelann (Coleoptera: Coccinellidae) from West Bengal, pp. 93-120 in Zootaxa 4382 (1) on pages 98-103, DOI: 10.11646/zootaxa.4382.1.3, http://zenodo.org/record/118156
The valence force constants and bond orders of thionyl halides by the effective nuclear charge method
No full textWith the use of the effective nuclear charge method, the potential constants of the pyramidal xy2z type of molecules have been evaluated for the first time. A normal co-ordinate analysis has also been carried out, using F.G. matrix method, by setting the initial F matrix based on these force constants. The values obtained by incorporating the observed frequency data agree very well with those arrived at from nuclear charge method. This proves the elegancy of the nuclear charge method in predicting the force constants.Dhanalakshmi A., Lalitha M., Kamala P. The valence force constants and bond orders of thionyl halides by the effective nuclear charge method. In: Bulletin de la Classe des sciences, tome 70, 1984. pp. 327-332
Relay cooperation in multiaccess networks
No full textCooperation in communication networks results when terminals use their energy and bandwidth resources to mutually enhance their transmissions. Cooperation can be induced in many ways and each approach entails a different tradeoff of power, bandwidth, complexity, and costs to achieve spatial diversity gains characteristic of antenna arrays. In this dissertation, we study a specific cooperative network - a multiaccess relay channel (MARC) where cooperation is induced via a dedicated relay node in a network where multiple users communicate with one destination.
We extend the relaying strategies of decode-and-forward (DF), compress-and-forward (CF), and amplify-and-forward (AF) to the MARC. Specifically, for DF we show that real-time decoding at the destination using a sliding-window incurs a rate loss relative to an offline backward decoding technique. We develop an offset encoding technique that improves sliding window decoding and achieves the corner points of the backward decoding rate region with significantly smaller delay.
Next we compare two approaches to inducing cooperation in a multiaccess channel. In one approach we allow the users to cooperate while in the other we induce cooperation via a relay when the users cannot or do not cooperate. Using the total transmit and processing power consumed at all nodes as a cost metric, we compare the DF and AF sum-rates and outage probabilities for the two networks. Our results show that cooperation is most desirable in the regime where processing power is significantly smaller than the transmit power. We also show that relay cooperation is on average more energy efficient than user cooperation.
Finally, we develop a capacity result for the MARC. The MARC belongs to a class of multi-terminal networks whose capacity is, in general, not known. For a degraded Gaussian K-user MARC, we use max-min optimization techniques to show that DF achieves the K-user sum-capacity.Ph.D.Includes bibliographical references (p. 162-167)
The CARMENES search for exoplanets around M dwarfs. Two temperate Earth-mass planet candidates around Teegarden's Star
No full textContext. Teegarden's Star is the brightest and one of the nearest ultra-cool dwarfs in the solar neighbourhood. For its late spectral type (M7.0V), the star shows relatively little activity and is a prime target for near-infrared radial velocity surveys such as CARMENES. Aims. As part of the CARMENES search for exoplanets around M dwarfs, we obtained more than 200 radial-velocity measurements of Teegarden's Star and analysed them for planetary signals. Methods. We find periodic variability in the radial velocities of Teegarden's Star. We also studied photometric measurements to rule out stellar brightness variations mimicking planetary signals. Results. We find evidence for two planet candidates, each with .1M_\oplus$ minimum mass, orbiting at periods of 4.91 and 11.4 d, respectively. No evidence for planetary transits could be found in archival and follow-up photometry. Small photometric variability is suggestive of slow rotation and old age. Conclusions. The two planets are among the lowest-mass planets discovered so far, and they are the first Earth-mass planets around an ultra-cool dwarf for which the masses have been determined using radial velocities
TextRS: Deep bidirectional triplet network for matching text to remote sensing images
No full textExploring the relevance between images and their respective natural language descriptions, due to its paramount importance, is regarded as the next frontier in the general computer vision literature. Thus, recently several works have attempted to map visual attributes onto their corresponding textual tenor with certain success. However, this line of research has not been widespread in the remote sensing community. On this point, our contribution is three-pronged. First, we construct a new dataset for text-image matching tasks, termed TextRS, by collecting images from four well-known different scene datasets, namely AID, Merced, PatternNet, and NWPU datasets. Each image is annotated by five different sentences. All the five sentences were allocated by five people to evidence the diversity. Second, we put forth a novel Deep Bidirectional Triplet Network (DBTN) for text to image matching. Unlike traditional remote sensing image-to-image retrieval, our paradigm seeks to carry out the retrieval by matching text to image representations. To achieve that, we propose to learn a bidirectional triplet network, which is composed of Long Short Term Memory network (LSTM) and pre-trained Convolutional Neural Networks (CNNs) based on (EfficientNet-B2, ResNet-50, Inception-v3, and VGG16). Third, we top the proposed architecture with an average fusion strategy to fuse the features pertaining to the five image sentences, which enables learning of more robust embedding. The performances of the method expressed in terms Recall@K representing the presence of the relevant image among the top K retrieved images to the query text shows promising results as it yields 17.20%, 51.39%, and 73.02% for K = 1, 5, and 10, respectively
Cryptolaemus montrouzieri MUlSANt 1853
No full text2. Cryptolaemus montrouzieri Mulsant, 1853 (FIG. 2) Brief description: FORM (FIG. 2A) ElONGAtE OVAl, cONVEX; DORSUM DENSElY PUbEScENt. HEAD AND PRONOtUM ORANGE- YEllOW, ElYtRA blAck WItH ORANGE YEllOW OR YEllOWISH tEStAcEOUS APIcES. VENtRAl SIDE WItH PROStERNUM ORANGE YEllOW, MESO- AND MEtAVENtRItES DARk bROWN tO blAck; AbDOMEN ORANGE YEllOW. MAlES WItH REDDISH bROWN FORElEGS, MUcH PAlER tHAN tHE OtHER tWO PAIRS; FEMAlES WItH FORElEGS DARk bROWN/blAck, OF tHE SAME cOlOUR AS OtHER PAIRS OF lEGS. ANtENNA (FIG. 2F) cOMPOSED OF 10 ANtENNOMERES. MAXIllA (FIG. 2G) WItH tERMINAl SEGMENt StRONGlY SEcURIFORM. PROStERNUM (FIG. 2b) ANtERIORlY PRODUcED tO cOVER MOUtHPARtS, INtERcOXAl PROcESS (FIG. 2H) WItH A PAIR OF SHORt cARINAE. HYPOMERAl SHElF PROMINENt (FIG. 2c). AbDOMINAl POStcOXAl lINES (FIG. 2I) cOMPlEtE. TARSI tRIMEROUS. TARSAl clAWS APIcAllY bIFID IN FEMAlE (FIG. 2D), APPENDIcUlAtE IN MAlE (FIG. 2E). MAlE GENItAlIA (FIGS 2k, l) AND FEMAlE SPERMAtHEcA (FIG. 2j) AS IllUStRAtED. Notes: THIS SPEcIES IS OF AUStRAlASIAN ORIGIN AND ONE OF tHE MOSt EFFEctIVE INtRODUcED PREDAtORS OF MEAlYbUG PEStS WORlDWIDE. It IS kNOWN tO FEED ON All StAGES OF M. hirsutus AND IS MORE cOMMON ON OtHER HOSt PlANtS OF M. hirsutus SUcH AS GRAPEVINE AND HIbIScUS tHAN MUlbERRY (lAbEl DAtA). SEVERAl WORkERS HAVE EVAlUAtED It AND FOUND It tO bE ONE OF tHE MOSt EFFEctIVE PREDAtORS OF M. hirsutus ON MUlbERRY (CHONG et al. 2015). THIS SPEcIES HAS bEEN USED IN lARGE-ScAlE bIOlOGIcAl cONtROl PROGRAMS AGAINSt M. hirsutus IN MANY PARtS OF tHE WORlD IN cOMbINAtION WItH tWO ENcYRtID PARASItOIDS, Anagyrus kamali MOURSI AND Gyranusoidea indica SHAFEE, AlAM & AGARWAl (PERSAD & KHAN 2002; CUlIk et al. 2013).Published as part of Poorani, J. & Lalitha, N., 2018, Illustrated accounts of coccinellid predators of Maconellicoccus hirsutus (Green) (Hemiptera: Sternorrhyncha: Pseudococcidae) on mulberry in India, with description of a new species of Scymnus Kugelann (Coleoptera: Coccinellidae) from West Bengal, pp. 93-120 in Zootaxa 4382 (1) on page 95, DOI: 10.11646/zootaxa.4382.1.3, http://zenodo.org/record/118156
A study on the Class III Endochitinase of Tamarind (Tamarindus indica) seeds
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
Nephus bipunctatus
No full text12. Nephus bipunctatus -group (FIG. 14) Brief description: LENGtH 1.90–2.20 MM, WIDtH 1.30–1.50 MM. FORM (FIG. 14A) ElONGAtE OVAl, DORSUM MODERAtElY cONVEX AND DENSElY PUbEScENt. HEAD AND PRONOtUM DARk bROWN tO PIcEOUS. ElYtRA DARk bROWN tO PIcEOUS WItH tWO cIRcUlAR, ORANGE-REDDISH SPOtS IN tHE POStERIOR HAlF. ANtENNA cOMPOSED OF 10 ANtENNOMERES. AbDOMINAl POStcOXAl lINE (FIG. 14b) INcOMPlEtE. MAlE GENItAlIA (FIGS 14c–E) AND FEMAlE SPERMAtHEcA (FIG. 14F) AS IllUStRAtED. Notes: THIS SPEcIES bElONGS tO tHE Nephus bipunctatus- GROUP AS DEFINED bY FüRScH (1965) AND IS WIDElY DIStRIbUtED IN INDIA. THERE IS cONSIDERAblE VARIAtION IN tHIS SPEcIES AND It IS NOt POSSIblE tO IDENtIFY It cONclUSIVElY At PRESENt AS INDIAN SPEcIES OF Nephus ARE bADlY IN NEED OF REVISION. THE MAlE GENItAlIA OF tHIS SPEcIES ARE NEARlY IDENtIcAl tO tHE IllUStRAtIONS GIVEN bY REN et al. (2009) FOR Nephus quadrimaculatus (HERbSt), WHIcH IS MOSt lIkElY tO bE A MISIDENtIFIcAtION. It FEEDS ON A VARIEtY OF MEAlYbUGS INclUDING M. hirsutus IN SOUtH INDIA (lAbEl DAtA) AND tHE SPEcIMENS StUDIED FROM WESt BENGAl WERE cOllEctED ON MUlbERRY MEAlYbUG.Published as part of Poorani, J. & Lalitha, N., 2018, Illustrated accounts of coccinellid predators of Maconellicoccus hirsutus (Green) (Hemiptera: Sternorrhyncha: Pseudococcidae) on mulberry in India, with description of a new species of Scymnus Kugelann (Coleoptera: Coccinellidae) from West Bengal, pp. 93-120 in Zootaxa 4382 (1) on page 107, DOI: 10.11646/zootaxa.4382.1.3, http://zenodo.org/record/118156
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