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Two new black fly species of Simulium (Simulium) (Diptera: Simuliidae) from South India
Sankarappan Anbalagan,Suruliyandi Vijayan,Chellapandian Balachandran,Sundaram Dinakaran,Muthukalingan Krishnan 한국응용곤충학회 2018 Journal of Asia-Pacific Entomology Vol.21 No.4
Two new black fly species, Simulium (Simulium) pothigaiense sp. n. and Simulium (Simulium) valparaiense sp. n., are described based on females, males, pupae and larvae. Simulium (Simulium) pothigaiense sp. n. is characterized by a claw simple without subbasal tooth and the base of radial vein with hair tuft in the females, maxillary palp with small sensory vesicle in the males, pupal gill with 10 short slender filaments and very short common basal stalk in the pupae and 5 hypostomal bristles per side lying parallel to lateral margin in the larvae. Simulium (Simulium) valparaiense sp. n. is characterized by hind basitarsus 6.6 times as long as its greatest width and claw with small distinct subbasal tooth in the females, gonostyle in medial view 2.3 times longer than coxite in the males, common basal stalk of pupal gill 0.31 times as long as interspiracular trunk, and larval thoracic and abdominal cuticle with pair of dorsolateral protuberances. Taxonomic notes are given to distinguish these two new species from closely related species. www.zoobank.org/urn:lsid:zoobank.org:pub:7285F6BC-607D-4F76-B6EE-9CAC67CDE651
Anti-oxidant and Hepatoprotective Activities ofAlcoholic Extract of Terminalia arjuna
N. Anbalagan,Mallika M,Sara Kuruvilla,M.V.V. Prasad,A. Patra,K. Balakrishna 한국생약학회 2007 Natural Product Sciences Vol.13 No.2
extract of Terminalia arjuna [TA] was evaluated for its hepatoprotective activity againstcarbon tetrachloride (CCl4)-induced hepatic damage in rats. The hepatoprotective activity of TA was evaluated byglutamate pyruvate transaminase (SGPT), serum alkaline phosphatase (SALP). The serum levels of total proteins(TP), total albumins (TAL) and bilirubin (BILN) were also estimated. The histological studies were also carriedout to support the above parameters. Silymarin (SM) was used as standard drug. Administration of TA (250 and500 mg/kg/po) markedly prevented CCl4-induced elevation of levels of SGOT, SGPT, SALP, TP, TAL and BILN.These biochemical observations were supplemented by histopathological examination of liver sections. Alcoholicextract of TA also shown significant in-vitro free radical scavenging activity against 1, 1-diphenyl-2-picryltraditional use of this plant in the management of liver diseases.KeywordsTerminalia arjuna, In-vitro anti-oxidant, hepatoprotective, Liv 52, CCl4.
Role of dwell on compact deformation during tableting: an overview
Parthiban Anbalagan,Celine Valeria Liew,Paul Wan Sia Heng 한국약제학회 2017 Journal of Pharmaceutical Investigation Vol.47 No.3
Tablet compaction is an important unit operation in the pharmaceutical industry. Among the compaction parameters, dwell time is a key parameter that has been consistently been shown to impact the mechanical quality of tablets. Compacts experience a state of relatively constant strain during the dwell phase and this allows time dependent reactions such as viscoelastic flow to take place within the tablet microstructure. The importance of time dependent compact deformation during the dwell phase has been extensively researched over the years. The amount of plastic flow during the dwell phase has been quantified by researchers by calculating the amount of compaction force decay from stress relaxation curves and by determining certain deformation parameters from compaction force–time profiles during high speed tableting. Dwell time prolongation often led to significant enhancements in the mechanical strength of the tablets, due to a favorable timedependent shift in the elastic–plastic equilibrium in the compact. The influence of dwell phase on tablet properties is governed by the predominant deformation properties of constituents being compressed along with other coexisting compaction parameters such as strain rate during the consolidation phase of the compaction cycle. Research work on the impact of dwell time on tablet compaction in conjunction with formulation and process variables are useful as the findings that are representative of manufacturing conditions would be useful for understanding of the compaction process especially in high speed tableting. Press or tool designs may also be accentuated at increasing dwell time without compromising tablet production rate.
Pratap Anbalagan,Raja Ramachandran,Jinde Cao,Grienggrai Rajchakit,Chee Peng Lim 제어·로봇·시스템학회 2019 International Journal of Control, Automation, and Vol.17 No.2
In this article, we explore the theoretical issues on the drive-response synchronization of a class of fractionalorder uncertain complex valued neural networks (FOUCNNs) with mixed time varying delays and impulses. Based upon the contraction mapping principle, robust analysis techniques, as well as Riemann-Liouville (R-L)derivative, we derive a new set of novel sufficient conditions for the existence and uniqueness of equilibrium pointof such neural network system, while by applying the Lyapunov functional approach, the global stability of theequilibrium solutions are obtained. Furthermore, the synchronization criterion of FOUCNNs is also attracted bymeans of the adaptive error feedback control strategy. Finally, two examples are provided along with the simulationresults to demonstrate the effectiveness of our main proofs.
Novel Electroluminescent Polymer Derived from Pyrene-Functionalized Polyaniline
Chellachamy Anbalagan Amarnath,Hyoung Kun Kim,이동기,이상협,도영락,백운규 대한화학회 2011 Bulletin of the Korean Chemical Society Vol.32 No.5
A solution processable polymer was synthesized, by incorporating pyrene groups into the backbone of the polyaniline chain, and used as an emissive layer in an organic light emitting diode. The polyaniline base was reacted with acid chloride of pyrene butyric acid to form pyrene-functionalized polyaniline chains. The source of pyrene moiety was acid chloride of pyrene butyric acid. The formation of polymer from acid chloride of pyrene butyric acid and polyaniline was confirmed by the FTIR and ^1H-NMR spectroscopy. Differential scanning calorimetry revealed high glass transition temperature of 210 ^oC. Due to the presence of pyrene moieties in the backbone, the polyaniline synthesized in the present study is solution processable with light emitting property. The photoluminescence spectrum of the polymer revealed that emission lies in the blue region, with a peak at 475 nm. The light emitting device of this polymer exhibits the turn-on voltage of 15 V.
Novel Electroluminescent Polymer Derived from Pyrene-Functionalized Polyaniline
Amarnath, Chellachamy Anbalagan,Kim, Hyoung-Kun,Yi, Dong-Kee,Lee, Sang-Hyup,Do, Young-Rag,Paik, Un-Gyu Korean Chemical Society 2011 Bulletin of the Korean Chemical Society Vol.32 No.5
A solution processable polymer was synthesized, by incorporating pyrene groups into the backbone of the polyaniline chain, and used as an emissive layer in an organic light emitting diode. The polyaniline base was reacted with acid chloride of pyrene butyric acid to form pyrene-functionalized polyaniline chains. The source of pyrene moiety was acid chloride of pyrene butyric acid. The formation of polymer from acid chloride of pyrene butyric acid and polyaniline was confirmed by the FTIR and $^1H$-NMR spectroscopy. Differential scanning calorimetry revealed high glass transition temperature of 210 $^{\circ}C$. Due to the presence of pyrene moieties in the backbone, the polyaniline synthesized in the present study is solution processable with light emitting property. The photoluminescence spectrum of the polymer revealed that emission lies in the blue region, with a peak at 475 nm. The light emitting device of this polymer exhibits the turn-on voltage of 15 V.
Balachandran Chellapandian,Anbalagan Sankarappan,Kandeepan Chithan,Arun Nagendran Natarajan,Jayakumar Manickkam,Fathi Abd_Allah Elsayed,Alqarawi Abdulaziz A.,Hashem Abeer,Kathirvelu Baskar 한국응용곤충학회 2021 Journal of Asia-Pacific Entomology Vol.24 No.3
Mosquitoes are medically important insects worldwide. They serve as a primary vector for transmitting several major diseases like dengue and chikungunya, chiefly spread through Aedes aegypti, a prominent mosquito vector. The present study focused on evaluating the inhibitory effect of natural alkaloids on the acetylcholinesterase present in Ae. aegypti using molecular docking studies. A total of 25 different alkaloids were selected as ligands and their docking ability with an Acetylcholinesterase 1 (AChE1) recept or found in Ae. aegypti was performed by AutoDock. Results indicated that alpha-solanine had the best fit into the AChE1 binding pocket with a minimum binding energy of − 8.13 kJ/mol. Among the different alkaloids tested, it is suggested that alpha-solanine would serve as the best inhibitor of AChE1 in Ae. aegypti.
K. Balakrishna,N. Anbalagan,A. Patra,G. Veluchamy,M.V.V. Prasad 한국생약학회 2004 Natural Product Sciences Vol.10 No.5
In the present study, the alcoholic extract of Terminalia arjuna (TA) and Arjunolic acid (AA) were studied for its anti-asthmatic and anaphylactic activity. Treatment with TA (250 & 500 mg/kg) and AA (50&100 mg/kg) has shown significant protection against mast cell disruption in rats induced by compound 48/80. TA and AA also protected the guinea pig against histamine as well as acetylcholine induced bronchospasm. Both TA & AA exhibited better protection against histamine release than against acetylcholine release. Anti-asthmatic and anaphylactic activity may be possibly due to membrane stabilizing potential and inhibition of antigen induced histamine and acetylcholine release.