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Search Results: 1 - 10 of 138781 matches for " K. Suchithra "
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Some subclasses of uniformly convex functions involving certain fractional calculus operator
K. Suchithra,T. Thulasiram,R. Sattanathan
International Journal of Mathematical Analysis , 2012,
A cross-sectional hospital-based study of autoantibody profile and clinical manifestations of systemic lupus erythematosus in south Indian patients
Kosaraju K,Shenoy S,Suchithra U
Indian Journal of Medical Microbiology , 2010,
Abstract: Our study was aimed to analyze clinical manifestations, autoantibodies and other serological abnormalities in South Indian patients with systemic lupus erythematosus. Clinical history and findings on systemic examination were noted. Antinuclear antibodies (ANA), antibodies to double-stranded DNA (dsDNA) were detected by immunofluorescence and ANA profile by Immunoblotting. Arthritis was most common followed by fever and skin rash. Clinical manifestations vary according to geographical location of the patient. ANA was positive in 64.28% and anti-dsDNA in 89.36% of patients. All patients with lupus nephritis were positive for dsDNA. Detection of antibodies to dsDNA, RNP and anti-Smith (Sm) are of diagnostic and prognostic importance.
Coefficient Bounds for Certain Classes of Meromorphic Functions
Silverman H,Suchithra K,Stephen BAdolf,Gangadharan A
Journal of Inequalities and Applications , 2008,
Abstract: Sharp bounds for are derived for certain classes and of meromorphic functions defined on the punctured open unit disk for which and , respectively, lie in a region starlike with respect to 1 and symmetric with respect to the real axis. Also, certain applications of the main results for a class of functions defined through Ruscheweyh derivatives are obtained.
Coefficient Bounds for Certain Classes of Meromorphic Functions
H. Silverman,K. Suchithra,B. Adolf Stephen,A. Gangadharan
Journal of Inequalities and Applications , 2009, DOI: 10.1155/2008/931981
Abstract: Sharp bounds for |a1 ¢ ’ a02| are derived for certain classes £ ¢ —( ) and £ ± ¢ —( ) of meromorphic functions f(z) defined on the punctured open unit disk for which ¢ ’zf ¢ € 2(z)/f(z) and ( ¢ ’(1 ¢ ’2 ±)zf ¢ € 2(z)+ ±z2f ¢ € 3(z))/((1 ¢ ’ ±)f(z) ¢ ’ ±zf ¢ € 2(z)) ¢ € ‰ ¢ € ‰( ± ¢ ¢ ¢ ’(0,1]; ¢ € ‰ ¢ ( ±) ¢ ‰ ¥0), respectively, lie in a region starlike with respect to 1 and symmetric with respect to the real axis. Also, certain applications of the main results for a class of functions defined through Ruscheweyh derivatives are obtained.
Adsorption characteristics of humic acid-immobilized amine modified polyacrylamide/bentonite composite for cationic dyes in aqueous solutions

T S Anirudhan,P S Suchithra,

环境科学学报(英文版) , 2009,
Abstract: Humic acid-immobilized amine modified polyacrylamide/bentonite composite (HA-Am-PAA-B) was prepared and used as an adsorbent for the adsorption of cationic dyes (Malachite Green (MG), Methylene Blue (MB) and Crystal Violet (CV)) from aqueous solutions. The polyacrylamide/bentonite composite (PAA-B) was prepared by intercalative polymerization of acrylamide with Na-bentonite in the presence of N,N'-methylenebisacrylamide as a crosslinking agent and hexamethylenediammine as propagater. PAA-B was subsequently treated with ethylenediammine to increase its loading capacity for HA. The surface characterizations of the adsorbent were investigated. The adsorbent behaved like a cation exchanger and more than 99.0% removal of dyes was detected at pH range 6.0-8.0. The capacity of HA-Am-PAA-B was found to decrease in the following order: MG > MB > CV. The kinetic and isotherm data were interpreted by pseudo-second order rate equation and Freundlich isotherm model, respectively. Experiments were carried out using binary solute systems to assess the competitive adsorption phenomenon. The experimental isotherm data for each binary solute combination of MG, MB and CV were analyzed using Sheindrof-Rebhun-Sheintuch (SRS) (multicomponent Freundlich type) equation.
Secured Data Encoding Technique in High Capacity Color Barcodes for M-Ticket Application
B. Akila,B. Hema,M. Suchithra
International Journal of Electronics and Computer Science Engineering , 2013,
Abstract: This research aim is to increase the capacity of barcode (i.e.) Number of data bits embedded inside barcode will be increased by encoding data through orientation modulation in elliptical dot array. BARCODES that encode digital data on physical media are commonly utilized in commercial applications for tracing/tracking of trade items, in security applications for linking personal documents with a user, or in other applications as an auxiliary channel to encode additional information on a physical medium. which are fundamentally analog, these methods can add security and functionality and features that are associated with digital techniques at the expense of consuming space on the media. For instance, in personal IDs, driving licenses and passports, high capacity can enable the encoding of a sample speech signal, a picture, or other identifying personal information which in turn may be used to establish authenticity of the user. Care must, however, be exercised in designing color barcodes to ensure that they are robust to variations in the color printing and scanning processes, which have a greater impact when considering color rather than black/white reproduction and capture.2D bar codes are being considered for new emerging applications such as M-ticketing, where they carry selected information of a ticket that is received via a mobile phone; reliable and secure personal identification, where they store personal biometric data on the identification document; and visual communications with side information, where they can be used as an auxiliary channel conveying additional data for improving visual communications.
Bio-aerosols in indoor environment: Composition, health effects and analysis
Srikanth Padma,Sudharsanam Suchithra,Steinberg Ralf
Indian Journal of Medical Microbiology , 2008,
Abstract: Bio-aerosols are airborne particles that are living (bacteria, viruses and fungi) or originate from living organisms. Their presence in air is the result of dispersal from a site of colonization or growth. The health effects of bio-aerosols including infectious diseases, acute toxic effects, allergies and cancer coupled with the threat of bioterrorism and SARS have led to increased awareness on the importance of bio-aerosols. The evaluation of bio-aerosols includes use of variety of methods for sampling depending on the concentration of microorganisms expected. There have been problems in developing standard sampling methods, in proving a causal relationship and in establishing threshold limit values for exposures due to the complexity of composition of bio-aerosols, variations in human response to their exposure and difficulties in recovering microorganisms. Currently bio-aerosol monitoring in hospitals is carried out for epidemiological investigation of nosocomial infectious diseases, research into airborne microorganism spread and control, monitoring biohazardous procedures and use as a quality control measure. In India there is little awareness regarding the quality of indoor air, mould contamination in indoor environments, potential source for transmission of nosocomial infections in health care facilities. There is an urgent need to undertake study of indoor air, to generate baseline data and explore the link to nosocomial infections. This article is a review on composition, sources, modes of transmission, health effects and sampling methods used for evaluation of bio-aerosols, and also suggests control measures to reduce the loads of bio-aerosols.
Dynamic resource management in Cloud datacenters for Server consolidation
Alexander Ngenzi,Selvarani R,Suchithra R. Nair
Computer Science , 2015,
Abstract: Cloud resource management has been a key factor for the cloud datacenters development. Many cloud datacenters have problems in understanding and implementing the techniques to manage, allocate and migrate the resources in their premises. The consequences of improper resource management may result into underutilized and wastage of resources which may also result into poor service delivery in these datacenters. Resources like, CPU, memory, Hard disk and servers need to be well identified and managed. In this Paper, Dynamic Resource Management Algorithm(DRMA) shall limit itself in the management of CPU and memory as the resources in cloud datacenters. The target is to save those resources which may be underutilized at a particular period of time. It can be achieved through Implementation of suitable algorithms. Here, Bin packing algorithm can be used whereby the best fit algorithm is deployed to obtain results and compared to select suitable algorithm for efficient use of resources.
Spatio-Temporal Patterns of Barmah Forest Virus Disease in Queensland, Australia
Suchithra Naish, Wenbiao Hu, Kerrie Mengersen, Shilu Tong
PLOS ONE , 2011, DOI: 10.1371/journal.pone.0025688
Abstract: Background Barmah Forest virus (BFV) disease is a common and wide-spread mosquito-borne disease in Australia. This study investigated the spatio-temporal patterns of BFV disease in Queensland, Australia using geographical information system (GIS) tools and geostatistical analysis. Methods/Principal Findings We calculated the incidence rates and standardised incidence rates of BFV disease. Moran's I statistic was used to assess the spatial autocorrelation of BFV incidences. Spatial dynamics of BFV disease was examined using semi-variogram analysis. Interpolation techniques were applied to visualise and display the spatial distribution of BFV disease in statistical local areas (SLAs) throughout Queensland. Mapping of BFV disease by SLAs reveals the presence of substantial spatio-temporal variation over time. Statistically significant differences in BFV incidence rates were identified among age groups (χ2 = 7587, df = 7327,p<0.01). There was a significant positive spatial autocorrelation of BFV incidence for all four periods, with the Moran's I statistic ranging from 0.1506 to 0.2901 (p<0.01). Semi-variogram analysis and smoothed maps created from interpolation techniques indicate that the pattern of spatial autocorrelation was not homogeneous across the state. Conclusions/Significance This is the first study to examine spatial and temporal variation in the incidence rates of BFV disease across Queensland using GIS and geostatistics. The BFV transmission varied with age and gender, which may be due to exposure rates or behavioural risk factors. There are differences in the spatio-temporal patterns of BFV disease which may be related to local socio-ecological and environmental factors. These research findings may have implications in the BFV disease control and prevention programs in Queensland.
Association of SAP130/SF3b-3 with Cullin-RING ubiquitin ligase complexes and its regulation by the COP9 signalosome
Suchithra Menon, Tomohiko Tsuge, Naoshi Dohmae, Koji Takio, Ning Wei
BMC Biochemistry , 2008, DOI: 10.1186/1471-2091-9-1
Abstract: We report isolation of SAP130 (SF3b-3) as a CSN1 interacting protein. SAP130 is homologous to DDB1, and is a component of SF3b RNA splicing complex and STAGA/TFTC transcription complexes, but its specific function within these complexes is unknown. We show that SAP130 can interact with a variety of cullin proteins. It forms tertiary complexes with fully assembled CRL E3 complexes such as SCFSkp2, Elongin B/C -Cul2- VHL and Cul4-DDB complex by binding to both N-terminal and C-terminal domain of cullins. SAP130 preferentially associates with neddylated cullins in vivo. However knock-down of CAND1 abolished this preference and increased association of SAP130 with Cul2. Furthermore, we provide evidence that CSN regulates SAP130-Cul2 interaction and SAP130-associated polyubiquitinating activity.SAP130 is a cullin binding protein that is likely involved in the Nedd8 pathway. The association of SAP130 with various cullin member proteins such as Cul1, Cul2 and Cul4A is modulated by CAND1 and CSN. As an established component of transcription and RNA processing complexes, we hypothesis that SAP130 may link CRL mediated ubiquitination to gene expression.Cullin-RING ubiquitin ligase (CRL) family of E3 enzymes participates in diverse cellular and physiological processes [1]. Each CRL complex contains a cullin family member that serves as a scaffold to assemble a functional E3 complex. The C-terminal globular domain of cullin interacts with the small RING protein Rbx1 (Roc1 or Hrt1) forming the catalytic core, while the substrate-recognizing module assembles at the N-terminal cullin repeats domain [2,3]. In SCF (Skp1-Cullin1-F-box protein) complexes, the substrate-recognizing module consisting of Skp1 and an F-box protein such as Skp2 interacts specifically with Cul1 [4]. Similarly, Elongin B/C-VHL complex interacts with Cul2 [5,6], the BTB domain substrate adaptor binds to Cul3, while DDB1 serves as a Cul4 adaptor [7-9]. DDB1 belongs to a family of proteins with significant sequ
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