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Nocardioides humi sp. nov., a -glucosidase-producing bacterium isolated from soil of a ginseng field
Kim, M. K.,Srinivasan, S.,Park, M.-J.,Sathiyaraj, G.,Kim, Y.-J.,Yang, D.-C. Microbiology Society 2009 International journal of systematic and evolutiona Vol.59 No.11
<P>Strain DCY24(T), a Gram-reaction-positive, aerobic, rod-shaped, motile bacterium, was isolated from soil of a ginseng field in South Korea. According to 16S rRNA gene sequence analysis, it was closely related to Nocardioides aromaticivorans DSM 15131(T) (95.1 % similarity), Nocardioides simplex KCTC 9106(T) (95.0 %), Nocardioides nitrophenolicus DSM 15529(T) (94.8 %) and Nocardioides kongjuensis DSM 19082(T) (94.7 %). Chemotaxonomic data revealed that strain DCY24(T) possessed MK-8(H(4)) as the predominant menaquinone, ll-2,6-diaminopimelic acid as the diagnostic diamino acid, phosphatidylglycerol and diphosphatidylglycerol as predominant polar lipids and iso-C(16 : 0), iso-C(17 : 0) and C(18 : 1)omega9c as predominant fatty acids. The DNA G+C content was 71.0 mol%. Based on evidence from this polyphasic study, strain DCY24(T) (=KCTC 19265(T) =LMG 24128(T)) should be classified as the type strain of a novel Nocardioides species, for which the name Nocardioides humi sp. nov. is proposed.</P>
Remote NDT for Inspection of Reactor Vessel Components
B. Anandapadmanaban,G. Srinivasan,R. P. Kapoor 한국비파괴검사학회 2003 한국비파괴검사학회지 Vol.23 No.5
Fast Breeder Test Reactor (FBTR) is a 40 MW (thermal) / 13.2MW (electrical), Plutonium - Uranium mixed carbide fuelled, sodium cooled, loop type nuclear reactor operating at Indira Gandhi Centre for Atomic Research (IGCAR), Kalpakkam. Its main aim is to generate experience in operation of fast reactors and sodium systems and to serve as an irradiation facility for development of fuels and structural materials for fast reactors. Nuclear reactors pose difficulties to the NDT techniques used to monitor the conditions of the internal components. Sodium cooled fast breeder reactors have their own typical difficulties in using the NDT techniques. These are due to the need for operation in aggressive environment of nuclear radiation and sodium (molten/vapour), as well as the need to maintain leak tightness of a very high order during all states of reactor operation and shutdown for fuel handling, maintenance and remote inspection. This paper discusses the following NDT techniques, which have been successfully used for the past 15 years in FBTR: (i) Periscope and Projector, (ii) Core Co-ordinate Measuring Device and, (iii) Optical fiberscope. The inspection using these techniques have given confidence for further reactor operation at high power by giving useful data on the conditions of the components inside the reactor vessel.
A Novel Iris Authentication Using ECDSA
Srinivasan Nagaraj,Dr. G. S. V. P. Raju 보안공학연구지원센터 2016 International Journal of Security and Its Applicat Vol.10 No.1
The Cryptographic systems need a secret key or a random number must be necessarily tied to an individual through a unique identifier. This unique identifier definitely might exist a globally user id or biometric data [2]. In this paper we combined biometric with cryptography in which the intensity of each pixel of iris is changed into the elliptic curve and encrypted using ECC. The receiver end original image is recovered by using their decryption and authentication [8] is performed using ECDSA. The proposed technique is implemented for BMP images. We can enroll and add the number of images for authentication .It has been also performed more security if the image is recovered without being any side channel attack.
Performance of Implantable Antenna at ISM Band Characteristics for Biomedical Base
G. Narmadha,M. Malathi,Srinivasan Ashok Kumar,T. Shanmuganantham,S. Deivasigamani 한국통신학회 2022 ICT Express Vol.8 No.2
A novel and small sized implantable antenna has been proposed for scientific industrial & medical (ISM) band applications. The proposed antenna is — shaped antenna and it is a circular patch antenna which has been designed based on the previous research articles and the lower size is achieved by implementing different miniaturization techniques. The radiating structure has a circular shaped patch and it has fillet edges with square shape. The back reflections have been avoided by extending the ground plane over the complete plane. The proposed antenna has been structured by using ROGER 3010 substrate which has the thickness of 1.6 mm and dielectric permittivity of 10.2 in order to achieve the geometries of an antenna with rigidity, the proposed structure has been designed. This structure is operated at 2.4 GHz with the most recommended omni-directional pattern that has been used for transmitting with other in body devices.
A Multi-period Behavioral Model for Portfolio Selection Problem
Pederzoli, G.,Srinivasan, R. 한국경영과학회 1981 韓國經營科學會誌 Vol.6 No.2
This paper is concerned with developing a Multi-period Behavioral Model for the portfolio selection problem. The unique feature of the model is that it treats a number of factors and decision variables considered germane is decision making on an interrelated basis. The formulated problem has the structure of a Chance Constrained programming Model. Then employing arguments of Central Limit Theorem and normality assumption the stochastic model is reduced to that of a Non-Linear Programming Model. Finally, a number of interesting properties for the reduced model are established.
R. Srinivasan,B. Suresh Babu,P. Prathap,Ruban Whenish,R. Soundararajan,G. Chandramohan 한양대학교 세라믹연구소 2021 Journal of Ceramic Processing Research Vol.22 No.1
Friction Stir Welding (FSW) is a metal joining process has its own benefits over fusion welding processes. FSW AluminiumMetal Matrix Composites (AMMC) replaced conventional metals for structural applications in aerospace, automobile andmarine sectors. In this present investigation, process parameters of FSW for joining AA 6063-SiC-B4C hybrid MMCs wereoptimized in order to achieve maximum tensile strength. Initially, AMMC was manufactured through stir casting with thematrix AA 6063 and reinforcements SiC and B4C. The hybrid MMC work pieces were subjected to FSW process by varyingthe process parameters such as tool rotation speed, welding speed and axial force using Taguchi L27 orthogonal array. Tensilestrength of hybrid composite was examined and regression analysis were done using MINITAB V17 software. GeneticAlgorithm technique was used to optimize the tensile strength with FSW parametric combinations. The optimum parametersfor FSW of AA6063-SiC-B4C hybrid composites were Tool rotational speed (TRS) – 1050 rpm; Axial Force (AF) – 10 kN andWeld Speed (WS) – 45 mm/min obtained. The optimal parameters were applied to experimental study and the results werevalidated.
Comparative Study on the Wear Behavior of Long and Short Glass Fiber Reinforced Plastics
V. Srinivasan,R. Karthikeyan,G. Ganesan,B. Asaithambi 대한금속·재료학회 2010 METALS AND MATERIALS International Vol.16 No.2
In recent years, the fiber reinforced composites have been used more in tribological applications where the sliding surfaces requires a high wear resistance and a low co-efficient of friction. The growth of GFRP is significantly higher than that of steel. No engineer or designer can ignore the growth of GFRP, but the decision to use a new material is difficult, yet important. The comparative tribological performance of short and long glass fiber–epoxy composites, under varying load and sliding velocities, is reported in this investigation. Besides conventional weighing, the coefficient of friction, contact temperature, and wear rate were determined. The worn surfaces of the specimens were examined by a Scanning Electron Microscope (SEM). The wear mechanisms and the transitions that govern the tribological behavior of the composites between them are discussed in detail. It was found that the epoxy reinforced with a long glass fiber exhibited a reduced wear rate than the short glass fiber.
Remote NDT for Inspection of Reactor Vessel Components of Fast Breeder Test Reactor
Anandapadmanaban, B.,Srinivasan, G.,Kapoor, R. P. 한국비파괴검사학회 2003 한국비파괴검사학회지 Vol.23 No.5
Fast Breeder Test Reactor (FBTR) is a 40 MW (thermal) / 13.2MW (electrical), Plutonium - Uranium mixed carbide fuelled, sodium cooled, loop type nuclear reactor operating at Indira Gandhi Centre for Atomic Research (IGCAR), Kalpakkam. Its main aim is to generate experience in operation of fast reactors and sodium systems and to serve as an irradiation facility for development of fuels and structural materials for fast reactors. Nuclear reactors Pose difficulties to the NDT techniques used to monitor the conditions of the internal components. Sodium cooled fast breeder reactors have their own typical difficulties in using the NDT techniques. These are due to the need for operation in aggressive environment of nuclear radiation and sodium (molten/vapour), as well as the need to maintain leak tightness of a very high order during all states of reactor operation and shutdown for fuel handling, maintenance and remote inspection. This paper discusses the following NDT techniques, which have been successfully used for the past 15 years in FBTR: (ⅰ) Periscope and Projector, (ⅱ) Core Co-ordinate Measuring Device and, (ⅲ) Optical fiberscope. The inspection using these techniques have given confidence for further reactor operation at high power by giving useful data on the conditions of the components inside the reactor vessel.