oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2019 ( 41 )

2018 ( 246 )

2017 ( 271 )

2016 ( 350 )

Custom range...

Search Results: 1 - 10 of 189947 matches for " Kalpana G "
All listed articles are free for downloading (OA Articles)
Page 1 /189947
Display every page Item
A Survey on Compound Image Classification and Compression Techniques.
K.Kalpana,G.Sophia Reena
International Journal of Engineering Sciences & Research Technology , 2013,
Abstract: Compound images are combinations of text, graphics and natural images. This paper presents a review of recent developments in compound image segmentation and compression in the field of image processing.
Distichiasis-lymphedema syndrome with optic disc pit
Kaarthigeyan K,Ramprakash M,Kalpana G
Indian Journal of Ophthalmology , 2011,
Abstract:
Resorcinol ninhydrin complex: 1,5,9-trihydroxy-8-oxatetracyclo[7.7.0.02,7.010,15]hexadeca-2,4,6,10(15),11,13-hexaen-16-one
T. Uma Devi,S. Priya,G. Kalpana,S. Selvanayagam
Acta Crystallographica Section E , 2012, DOI: 10.1107/s1600536812014249
Abstract: In the title compound, C15H10O5, the cyclopentanone (r.m.s. deviation = 0.049 ) and oxolane (r.m.s. deviation = 0.048 ) rings make a dihedral angle of 67.91 (4)°. An intramolecular O—H...O hydrogen bond is observed. In the crystal, molecules associate via O—H...O hydrogen bonds, forming a three-dimensional network.
4-[(E)-(Hydroxyimino)methyl]-N,N-dimethylanilinium chloride
T. Uma Devi,G. Kalpana,S. Priya,K. Ravikumar
Acta Crystallographica Section E , 2012, DOI: 10.1107/s1600536812020211
Abstract: In the title compound, C9H13N2O+·Cl , the cation, apart from the methyl groups, is almost planar, with a maximum deviation of 0.040 (1) ; the methyl C atoms deviate by 0.389 (2) and 1.247 (1) , from the mean plane. In the crystal, cations and anions associate through C—H...Cl hydrogen bonds, forming a helical arrangement. In addition, intermolecular O—H...Cl, N—H...Cl and C—H...N interactions are observed.
Fraser syndrome
Kalpana Kumari M,Kamath Sulata,Mysorekar Vijaya,Nandini G
Indian Journal of Pathology and Microbiology , 2008,
Abstract: Fraser syndrome or cryptophthalmos is a rare autosomal recessive disorder characterized by major features such as cryptophthalmos, syndactyly and abnormal genitalia. The diagnosis of this syndrome can be made on clinical examination and perinatal autopsy. We present the autopsy findings of a rare case of Fraser syndrome in a male infant.
ANTITUMOR ACTIVITY OF CAPPARIS SEPIARIA ON EHRLICH ASCITES CARCINOMA IN MICE
Y VenuGopal,Ravindranath A,Kalpana G,Prabhaker Reddy.V
International Journal of Biomedical Research , 2013, DOI: 10.7439/ijbr.v2i4.103
Abstract: The methanol extract of Capparis Sepiaria (Capparaceae) bark (MECS) were evaluated for antitumor activity against Ehrlich ascites carcinoma (EAC)-bearing Swiss albino mice. The extract was administered at the doses of 200, and 400 mg/kg body weight per day for 14 days after 24 h of tumor inoculation. After the last dose and 18 h fasting, the mice were sacrificed. The present study deals with the effect of MECS on the growth of transplantable murine tumor, life span of EAC-bearing hosts and hematological profile MECS caused significant (P < 0.01) decrease in tumor volume, packed cell volume, and viable cell count; and it prolonged the life span of EAC-tumor bearing mice. Hematological profile converted to more or less normal levels in extract-treated mice. The results indicate that MECS exhibited significant antitumor activity in EAC-bearing mice.
ANTITUMOR ACTIVITY OF CAPPARIS SEPIARIA ON EHRLICH ASCITES CARCINOMA IN MICE
Y VenuGopal,Ravindranath A,Kalpana G,Prabhaker Reddy.V
International Journal of Biomedical Research , 2011, DOI: 10.7439/ijbr.v2i4.103
Abstract: The methanol extract of Capparis Sepiaria (Capparaceae) bark (MECS) were evaluated for antitumor activity against Ehrlich ascites carcinoma (EAC)-bearing Swiss albino mice. The extract was administered at the doses of 200, and 400 mg/kg body weight per day for 14 days after 24 h of tumor inoculation. After the last dose and 18 h fasting, the mice were sacrificed. The present study deals with the effect of MECS on the growth of transplantable murine tumor, life span of EAC-bearing hosts and hematological profile MECS caused significant (P < 0.01) decrease in tumor volume, packed cell volume, and viable cell count; and it prolonged the life span of EAC-tumor bearing mice. Hematological profile converted to more or less normal levels in extract-treated mice. The results indicate that MECS exhibited significant antitumor activity in EAC-bearing mice.
In vitro Studies on the Effects of Biofertilizers (Azotobacter and Rhizobium) on Seed Germination and Development of Trigonella foenum-graecum L. using a Novel Glass Marble containing Liquid Medium
G.S. Nagananda,Arijit Das,Sourav Bhattacharya,T. Kalpana
International Journal of Botany , 2010,
Abstract: Biofertilizers are the formulations of living microorganisms, which are capable of fixing atmospheric nitrogen in the soil and thereby, increasing the crop yield. Trigonella foenum-graecum L. is a medicinally important plant possessing anti-diabetic, anti-cancerous, anti-microbial and hypocholesterolaemic properties. The present study was conducted to develop an in vitro method for studying the effects of biofertilizers (Azotobacter and Rhizobium) on the seed germination and development of Trigonella foenum graecum L. using a simple and cost-effective liquid culture medium containing glass marbles as reusable and biologically inert support matrix. Sucrose optimization studies revealed maximum development for the plantlets grown on 1X Murashige and Skoog liquid medium containing 4% sucrose and glass marbles. Azotobacter and Rhizobium were isolated from rhizosphere soil and root nodules of Trigonella plants, respectively and identified following the standard procedures. Mass cultivation of the bacteria carried out for 5 days reported counts of 2.3x104 cells mL-1. The harvested bacterial cells were used to coat the seeds in the presence and absence of charcoal. After 15 days of growth under in vitro conditions, the root length, shoot length, fresh weight, protein, carbohydrate and chlorophyll contents of the plantlets were determined. Maximum growth was observed for the plantlets grown on 1X MS medium with 4% sucrose and glass marbles, inoculated with 40% concentration of Azotobacter, Rhizobium and their co-inoculum mixed with charcoal. Field trials, conducted under green house conditions, revealed that 10% biofertilizer co-inoculum supported maximum growth of the plants when the seeds were coated with charcoal.
ANTITUMOR ACTIVITY OF CLEOME VISCOSA AGAINST EHRLICH ASCITES CARCINOMA (EAC) IN SWISS ALBINO MICE
Venu Gopal Yerragunta,Ravindernath A,Kalpana G,Prabhakar Reddy V
International Journal of Phytopharmacy , 2012, DOI: 10.7439/ijpp.v2i2.394
Abstract: Methanolic extract of Cleome viscosa (Cappareace)(MECV) wasevaluate for Antitumor activity using EAC bearing Swissa albino mice. The extract administered at a dose of 200 and 400 mg/kg body weight about for 14 days after 24 hr of inoculation.After 18 h of last dose animals were sacrifed then estimated for various tumor growth parameters like increase in life span,mean survival time, tumor volume, heamotological parameters. The tumor beraing mice has shown abnormal pattern of hemological parameters and decreased life span of tumor bearing mice.The extracts treatent broght back all the abnormal parameters of tumor bearing animals to normal. The results indicated that MECV exhibited antitumor activity against EAC bearing mice.
Stability Indicating HPTLC Method for Analysis of Rifaximin in Pharmaceutical Formulations and an Application to Acidic Degradation Kinetic Study
Kalpana G. Patel,Nitesh R. Jain,Purvi A. Shah
ISRN Analytical Chemistry , 2013, DOI: 10.1155/2013/613218
Abstract: A specific stability indicating high-performance thin-layer chromatographic method for analysis of rifaximin both as a bulk drug and in formulations was developed and validated. The method employed HPTLC aluminium plates precoated with silica gel 60 F254 as the stationary phase. The optimized mobile phase system consisted of n-hexane?:?2-propanol?:?acetone?:?ammonia (5?:?4.1?:?1, v/v/v/v), which gave compact spots for rifaximin at of 0.59 ± 0.03. Rifaximin was subjected to forced degradation studies in order to check the specificity of the method. Densitometric analysis of rifaximin was carried out in the absorbance reflectance mode at 443?nm. The calibration plots showed linear relationship in the concentration range of 400–3200?ng per band. Moreover, linearity was also confirmed by verification of homoscedasticity of variance. According to validation studies, the developed method was repeatable and specific as revealed by % RSD less than 2 and hence can be used for routine analysis of pharmaceutical formulation. Moreover, the method could effectively separate the drug from its degradation products; hence it can be employed as a stability indicating one. The kinetics of acid degradation process at various temperatures was also investigated and first-order rate constant, half-life, shelf life, and activation energy were computed. 1. Introduction Rifaximin, a benzimidazole derivative, is a structural analogue of rifampicin. Chemically, it is a 2S,16Z,18E,20S,21S,22R,23R,24R,25S,26S,27S,28E-5,6,21,23,25-pentahydroxy-27-methoxy-2,4,11,16,20,22,24,26-octamethyl-2,7-epoxypentadeca-[1,11,13] trienimino) benzofuro [4,5-e] pyrido [1,2 benzimidazole 1,15(2H)-dione,25-acetate (Figure 1) [1]. Figure 1: Chemical structure of rifaximin. Rifaximin is a newer antibiotic, used for the treatment of patients having more than 12 years of age with traveller’s diarrhoea caused by noninvasive strains of Escherichia coli [4]. Rifaximin binds to the beta-subunit of bacterial DNA-dependent RNA polymerase and prevents catalysis of polymerization of deoxyribonucleotides into a DNA strand, thereby inhibiting bacterial RNA synthesis. In vitro studies of rifaximin have demonstrated broad-spectrum coverage including gram-positive, gram-negative, and anaerobic bacteria as well as a limited risk of bacterial resistance [5]. Literature reports various analytical methods like spectrophotometric [6, 7], RP-HPLC [8, 9], and stability indicating HPLC [10] for the determination of rifaximin in pharmaceutical formulations. Moreover, bioanalytical methods, that is, HPLC-TMS [11, 12], LC-ESI-MS
Page 1 /189947
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.