Zygapophyseal Joint Orientation and Facet Tropism and Their Association with Lumbar Disc Prolapse

Madhava Pai Kanhangad,Simanchal Prosad Mohanty,Siddarth Kamath,Asha Kamath 대한척추외과학회 2018 Asian Spine Journal Vol.12 No.5

Study Design: Cross-sectional study. Purpose: To evaluate the association between zygapophyseal joint angle (ZJA), facet tropism (FT), and lumbar intervertebral disc prolapse (IVDP). Overview of Literature: Several studies have shown that FT increases the risk of IVDP and have postulated that a more sagittally oriented zygapophyseal joint provides less mechanical resistance to axial torque, thereby exerting excessive rotational strain on the intervertebral disc, resulting in an annular tear. In contrast, other studies have found no definitive association between FT and IVDP. Therefore, conclusive evidence regarding the role of FT in the pathogenesis of disc prolapse is currently lacking. Methods: Magnetic resonance imaging scans of 426 patients with single-level lumbar IVDP were analyzed. Right and left ZJAs of the lumbar segments were measured on axial sections. The frequency and severity of FT were determined by calculating the absolute difference between the right and left ZJAs. Patients without IVDP at L4–L5 and L5–S1 served as controls for those with IVDP at L4–L5 and L5–S1, respectively. Chi-square test and t -test were used to compare the severity and frequency of FT between patients with and without IVDP. The receiver operating characteristic analysis was performed to determine the critical FT values that were predictive of IVDP. Results: Patients with IVDP exhibited a higher frequency (L4–L5: 47% vs. 15.08%; L5–S1: 39.62% vs. 22.69%; p =0.001) and severity (L4–L5: 7.85°±3.5° vs. 4.05°±2.62°; L5–S1: 7.30°±3.07° vs. 4.82°±3.29°; p <0.001) of FT than those without IVDP. Critical FT values of 5.7° at L4–L5 and 6° at L5–S1 increased the likelihood of IVDP by a factor of 2.89 and 1.75, respectively. Conclusions: Our results confirm the existence of a significant association between lumbar IVDP and FT; however, a causal relationship could not be ascertained.

Morphological, Structural, and Functional Properties of Maranta (Maranta arundinacea L) Starch

Madhava Naidu Madineni,sheema faiza,ragu sai surekha,ramasamy ravi,manisha guha 한국식품과학회 2012 Food Science and Biotechnology Vol.21 No.3

Starch isolated from maranta (Maranta arundinacea) tuber and studied for its various physicochemical characteristics. The amylose content of the starch was 24.8%. SEM showed that the granules were small indented and spherical. Maranta starch granule size has a range of 2.92-6.42 μm, (mean of 4.84 μm), length/degree of 1.20, and roundness of 0.73. Maranta starch has a gelatinization temperature of 74.8oC, peak viscosity of 498BU, and cold paste viscosity of 669 BU. It also possessed higher freeze-thaw stability. Dynamic rheological properties of maranta starch, measured using parallel plate geometry showed increased storage modulus (G') values, while loss modulus (G'') values were decreased with increasing frequency values (0-100 Hz). The low gelatinization temperature and high freeze thaw stability of starch indicates its potential for application as a thickener in food industries.

Record of five new endemic small mammal hosts for four ectoparasite species from Sri Lanka

Saranga Yathramullage,Madhava Meegaskumbura,Suyama Meegaskumbura 한국응용곤충학회 2014 Journal of Asia-Pacific Entomology Vol.17 No.3

Both ticks and fleas aremedically important arthropods,which act as vectors for a number of zoonotic diseases. InSri Lanka, 35 species of ticks and 20 species of fleas have been reported from mammals, birds and reptiles. However,records of these parasites from small mammals are scanty. Here, we report ticks and fleas infesting muroidrodents and shrews including endemic species collected from around the country. Of the 149 small mammalscollected, 48 individuals were infested with ticks, fleas or both. Immature stages of three tick species, Ixodesceylonensis, Haemaphysalis hystricis and Hyalomma brevipunctata and unidentified species of Rhipicephaluswere recorded from ten small mammal species. Four species of fleas, Stivalius phoberus, Stivalius aporus,Lentistivalius ferinus and Nosopsyllus tamilanus were identified from five species of small mammals. We reportnewhost species for I. ceylonensis (Crocidura miya, Suncus montanus and Solisorex pearsoni), S. aporus (S. montanusand Mus fernandoni), N. tamilanus (S. pearsoni) and Rhipicephalus spp. (Crocidura hikmiya, S. montanus, S. pearsoni,M. fernandoni). All new host species reported here are endangered or critically endangered endemics to Sri Lanka. © 2014 Korean Society of Applied Entomology, Taiwan Entomological Society and Malaysian Plant Protection

AN INTEGRATED SYSTEM APPROACH TO INJECTION MOLDING

이관석,S. Madhava 한국경영과학회 1993 한국경영과학회 학술대회논문집 Vol.- No.1

Pattern of Syringomyelia in Presumed Idiopathic and Congenital Scoliosis

Mohanty Simanchal Prosad,Kanhangad Madhava Pai,Saifuddin Sibin,Narayana Kurup Jayakrishnan K. 대한척추외과학회 2021 Asian Spine Journal Vol.15 No.6

Study Design: Retrospective study. Purpose: This study was undertaken to compare the patterns of syringomyelia in patients with presumed idiopathic and congenital scoliosis. Overview of Literature: The incidence of neuraxial anomalies presenting as idiopathic scoliosis ranges from 2% to 14%; the common ones are idiopathic syringomyelia (IS) and Chiari malformation type 1 (CM1) with syringomyelia. Some authors have speculated that scoliosis is caused by the asymmetrical compression of anterior horn cells by a syrinx, which causes an imbalance of the trunk musculature. In congenital scoliosis, syringomyelia is the second commonest cord anomaly, and the deformity progression depends upon the underlying vertebral abnormality, the location of the abnormality, and the age of patient, and is independent of the intraspinal anomaly. Methods: We analyzed the radiological records of 44 consecutive patients with scoliosis and syringomyelia. Of these 44 patients, 13 had IS, 12 had CM1, and 19 had congenital scoliosis. The radiographs were evaluated to determine the curve magnitude, sagittal alignment, side of convexity, and type of vertebral anomaly, if any. T1- and T2-weighted magnetic resonance imaging of the whole spine was analyzed to determine the presence of craniovertebral anomalies, syrinx length, syrinx diameter, and syrinx-cord ratio (SCR). Results: The frequency of left convex curves was 26.1%, with no significant differences across the three groups. The mean length of the syrinx was 7.2±4.9 vertebral levels, and the mean SCR was 0.39±0.2. The mean syrinx length was significantly higher in patients with CM1 and IS, compared to patients with congenital scoliosis. The mean SCR was highest in patients with CM1. In congenital scoliosis, syringomyelia was seen most frequently in patients with a failure of formation, and 63.2% had concomitant cord anomalies. Conclusions: Syrinxes were smaller in size and length in patients with congenital scoliosis, and are distinct from those seen in IS and CM1.

Phenomenological Model to Re-proportion the Ambient Cured Geopolymer Compressed Blocks

Radhakrishna,Tirupati Venu Madhava,G. S. Manjunath,K. Venugopal 한국콘크리트학회 2013 International Journal of Concrete Structures and M Vol.7 No.3

Geopolymer mortar compressed blocks were prepared using fly ash, ground granulated blast furnace slag, silica fume and metakaolin as binders and sand/quarry dust/pond ash as fine aggregate. Alkaline solution was used to activate the source materials for synthesizing the geopolymer mortar. Fresh mortar was used to obtain the compressed blocks. The strength development with reference to different parameters was studied. The different parameters considered were fineness of fly ash, binder components, type of fine aggregate, molarity of alkaline solution, age of specimen, fluid-to-binder ratio, binder-to-aggregate ratio, degree of saturation, etc. The compressed blocks were tested for compression at different ages. It was observed that some of the blocks attained considerable strength within 24 h under ambient conditions. The cardinal aim was to analyze the experimental data generated to formulate a phenomenological model to arrive at the combinations of the ingredients to produce geopolymer blocks to meet the strength development desired at the specified age. The strength data was analyzed within the framework of generalized Abrams’ law. It was interesting to note that the law was applicable to the analysis of strength development of partially saturated compressed blocks when the degree of saturation was maintained constant. The validity of phenomenological model was examined with an independent set of experimental data. The blocks can replace the traditional masonry blocks with many advantages.

Avifaunal diversity in the peripheral areas of the Maduruoya National Park in Sri Lanka: With conservation and management implications

Dinesh E. Gabadage,W. Madhava S. Botejue,Thilina D. Surasinghe,Mohomed M. Bahir,Majintha B. Madawala,Buddhi Dayananda,Vimukthi U. Weeratunga,D.M.S. Sameera Karunarathna 국립중앙과학관 2015 Journal of Asia-Pacific Biodiversity Vol.8 No.2

A survey was randomly conducted in the marginal areas of Maduruoya National Park, Sri Lanka for a period of > 7 years. These study sites are located within the dry zone and the intermediate zone. The main vegetation type of the area is dry mixed evergreen forest. We recorded 196 bird species belonging to 66 families, and they included 161 breeding residents, 25 purely migrants, nine both resident and migrants, one vagrant, 14 nationally threatened, three globally threatened, and 10 endemic species. We also report the first-ever records of Chestnut-backed Owlet, Red-faced Malkoha, and Spot-winged Thrush from this dry area. However, these precious habitats and its species are threatened because of irresponsible human activities such as forest fires, land filings, hunting, road kills, encroachments, garbage dumping, agrochemicals, granite-rock blasting, logging, and road constructions. Therefore, we recommend that relevant authorities take immediate conservation action to increase the protection of these marginal areas or buffer zone in the near future.

Pharmacognostical Identification of Rumex nepalensis Spreng(Polygonaceae)- an Adulterant for Indian Rhubarb

Sama Venkatesh,Bommineni Madhava Reddy,B. Suresh,M.M.Swamy,Ramesh Mullangi 한국생약학회 2004 Natural Product Sciences Vol.10 No.1

Pharmacognostic studies on the shape, microscopic structure, and morphology of Rumex nepalensis (Polygonaceae) were carried out. These studies provided referential information for identification of this crude drug.

Effect of Plasma Induced Surface Damages on the Organic Thin Films by Using Metal Mesh

Ha, Mi-Young,Rao, Mora Veera Madhava,Moon, Dae-Gyu Electrochemical Society 2016 ECS journal of solid state science and technology Vol.5 No.10

<P>In this paper we have investigated the effect of plasma induced damages on the organic small molecular electron transport layers in organic light emitting devices with such electroluminescent materials as tris(8-hydroxyquinolinato) aluminum (Alq(3)) layers was used for studying plasma-induced degradation. We presently use metal mesh that could reduce the influence of plasma exposure of the organic layer films. The photoluminescence, atomic force microscopy, scanning electron microscopy and current-voltage characteristics of electron transport material was measured after exposing to argon plasma. The high-energy species in plasma induces the sputtering of organic layers, quenching of emission sites, and the creation of defect sites in organic layers. In the current-voltage characteristics, negative differential resistance phenomenon was observed corresponding to electron-only device structure of Indium Tin Oxide (ITO)/Alq(3)/LiF/Al. The carrier transport behavior in the electron-only device was described. (C) 2016 The Electrochemical Society. All rights reserved.</P>

Design of a Communication-Aid Circuit to Detect Eye-Gazed Patterns

Kei Eguchi,Fumio Ueno,Hongbing Zhu,Toru Tabata,Madhava Jayawickrema 대한전자공학회 2002 ITC-CSCC :International Technical Conference on Ci Vol.2002 No.7