oalib

Publish in OALib Journal

ISSN: 2333-9721

APC: Only $99

Submit

Any time

2019 ( 286 )

2018 ( 436 )

2017 ( 453 )

2016 ( 673 )

Custom range...

Search Results: 1 - 10 of 309276 matches for " D.V.SINGH "
All listed articles are free for downloading (OA Articles)
Page 1 /309276
Display every page Item
ECONOMIC COMPARATIVE STUDY BETWEEN TWO MODELS FOR SULPHATED JUICE PUMP SYSTEMS WORKING SEASONALLY AND HAVING DIFFERENT CONFIGURATIONS
AMIT GOYAL,GULSHAN TANEJA,,D.V.SINGH
International Journal of Engineering Science and Technology , 2010,
Abstract: The present paper gives the comparative study with respect to the profit between two models for sulphated juice pump standby systems—one (Model I) comprising two big units and the other (Model II) comprising one big and two small units. In model I, initially one unit is operative and the other is kept as cold standby whereas in Model II, initially one big unit is operative and both the small units are kept as cold standby. Comparative study with respect to profits is made between two models taking into consideration the installation cost and consumption cost for both types of units (big as well as small). System is analysed by making use of semi-Markov processes and regenerative point technique.
Presidential Address - Karnal bunt of wheat . A global perspective - D.V. SINGH
D.V. SINGH
Indian Phytopathology , 2012,
Abstract: First of all I wish to express my deep sense of gratitude to all the members of the Indian Phytopathological Society (IPS) for the honour they have conferred on me by electing as the President of the prestigious Society. It has been my pleasure and privilege to serve this Society for the last four decades. I would like to pay my tributes to all those who have nurtured the Society and brought it to International status and hope that the Society will continue to progress with greater thrust to serve the cause of the Plant Pathology. I have selected the subject, with which I was associated for more than 30 years of my active research period i.e. Karnal bunt of wheat.
Changing behaviour of defense related enzymes in wheat during infection of Neovossia indica
ROBIN GOGOI*, D.V. SINGH and K.D. SRIVASTAVA
Indian Phytopathology , 2012,
Abstract: Behaviour of two defense related enzymes viz., polyphenol oxidase (PPO) and phenylalanine ammonia lyase (PAL) was studied in three wheat genotypes: HD 29 and DWL 5023 (resistant) and WL 711 (susceptible) after inoculation with Karnal bunt pathogen (Neovossia indica [Tilletia indica]). The activity of PPO increased much more in resistant genotypes HD 29 and DWL 5023 (4.4 and 4.5 fold, respectively) after two days of inoculation (DAI) than in susceptible genotype WL 711 (1.3 fold only). The extractable level of PAL also increased in the two genotypes but declined in the susceptible one. After 2 DAI, PAL activity was 3.9 and 2.3 fold high in HD 29 and DWL 5023, respectively whereas 1.5 fold less activity was detected in WL 711. Regression analysis ofthe data of both enzymes further confirmed their changing trends with respect to time after inoculation.
Differential induction of defense related enzymes involved in lignin biosynthesis in wheat in response to spot blotch infection
SOMA DAS, RASHMI AGGARWAL* and D.V. SINGH
Indian Phytopathology , 2012,
Abstract: Spot blotch of wheat caused by Bipolaris sorokiniana is prevalent in wheat growing areas of northern India. The role of lignification and the enzymes involved in the biosynthesis of lignin i.e. phenylalanine ammonia-lyase (PAL), cinnamyl alcohol dehydrogenase (CAD) and peroxidase (POX) in the wheat spot blotch disease resistance was studied using a resistant (Pusa-T 3336) and a susceptible genotype (Agra local). PAL activity began to increase in both the genotypes at 12 h after inoculation and reached to maximum at 2 days after inoculation (DAI). In resistant genotype Pusa-T 3336, 30 fold increase was found at 12 h after inoculation, whereas in susceptible genotype Agra local, the activity was marginal. CAD and POX activities were maximum at 2 DAI in resistant genotype, but in Agra local maximum CAD and POX activity was found at 4 DAI. POX activity was six times more in Pusa-T 3336 than Agra local. High lignification was observed in the resistant genotype.
Differential activities of b-1, 3-glucanase and lipoxygenase in wheat infected by the Kamal bunt pathogen
ROBIN GOGOI, D.V. SINGH and K.N. SRIVASTAVA
Indian Phytopathology , 2012,
Abstract:
Molecular differentiation of spot blotch resistant and susceptible genotypes of wheat using RAPD
SOMA DAS, RASHMI AGGARWAL, RENU and D.V. SINGH
Indian Phytopathology , 2012,
Abstract:
Pathogenic behaviour of leaf blight organisms on wheat
S.K. SINGH, K.D. SRIVASTAVA and D.V. SINGH
Indian Phytopathology , 2012,
Abstract:
Differentiation of Karnal bunt resistant and susceptible cultivars of wheat using RAPD
ROBIN GOGOI*, V.G. MALATHI, K. SRINIVASAN and D.V. SINGH
Indian Phytopathology , 2012,
Abstract: RAPD was carried out to determine difference between two widely cultivated Karnal bunt (KB) resistant wheat cultivars viz. HD 29 and DWL 5023 and one susceptible cultivar WL 711 using nine oligonuclocotide decamers viz. OPM-1, OPM-2, OPM-3, OPM-4, OPM-5, OPM-16, OPM-17. OPM-18 and OPM19. Majority of the primers yielded more than six PCR products. Some of the products were specific to WL 711 that indicated absence of such complementary sequences in the genomic DNA of HD 29 and DWL 5023. Similar difference was obtained between the two resistant cultivars also. One PCR product of 1.0 kb size obtained from only resistant cultivars in OPM-16 reaction showed its probable linkage with KB resistance gene in HD 29 and DWL 5023.
Profile of Ocular Trauma at Tertiary Eye Centre
D.V. Singh, Yog Raj Sharma, R.V. Azad, Dinesh Talwar, Rajpal
JK Science : Journal of Medical Education & Research , 2005,
Abstract: This prospective study reveals the epidemiological profile of ocular trauma referred to a tertiary eyecentre over one year. All consecutive patients referred to Vitreo-retina service during 1 year periodwere examined.Out of total 523 eyes registered large proportion was <25years of age (67%), males(88%) and literate (77%). Forty-four percent belonged to rural area and 38% were students. Mostof the open globe injuries were Zone 1(50.8%). 75% presented >1 week after injury. The incidenceof intraocular foreign body and retinal detachment was 17.4, and 11.3% respectively. Diagnosis ofpost traumatic endophthalmitis was made in 20.5% of open globe injuries. Development ofendophthalmitis correlated with younger age, rural setting, illiteracy, presence of foreign body andlens disruption. Ocular trauma requiring tertiary care commonly affects young students, labourersand factory workers. Younger, rural and illiterate patients are more likely to develop infection especiallyif they have lens injury or intraocular foreign body.
Antagonism of Chaetomium globosum to Drechslera sorokiniana, the spot blotch pathogen of wheat
S.K. BISWAS, K.D. SRIVASTAVA, R. AGGARWAL, PREM DUREJA* and D.V. SINGH
Indian Phytopathology , 2012,
Abstract: Interaction between Chaetomium globosum and Drechslera sorokiniana [Cochliobolus sativus] produced inhibition zone, indicating biocontrol mechanism of Ch. globosum through antibiosis. Fractionation of ethyl-acetate extract of culture filtrate of Ch.globosum by TLC revealed 4-5 bands of different Rf values on silica gel-coated plates, indicating the involvement of antifungal metabolites or mycolytic enzymes. Crude extracts purified by column chromatography and bioassay test with 1000 ppm of concentrate antagonised conidia of Co. sativus and drastically reduced their germination. Scanning electron microscopy of inoculated leaves sprayed with 0.2% of the antifungal compound showed distortion in conidial walls and disordered mycelial growth of the pathogen. Foliar spray of the compound at 0.2% controlled spot blotch lesions in wheat and revealed a stimulatory effect on plant growth.
Page 1 /309276
Display every page Item


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