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Toxicity in plants and optimal growth under fertilizer
D. K. Bhattacharya 한국전산응용수학회 2004 Journal of applied mathematics & informatics Vol.16 No.-
The paper determines by control-theoretic means the optimal dose of fertilizer to be used to two plants for maintaining optimal revival of their growths, which are retarded mainly due to the toxicity contributed by the plants jointly.
PEST MANAGEMENT OF TWO NON-INTERACTING PESTS IN PRESENCE OF COMMON PREDATOR
Bhattacharya, D.K.,Karan, S. 한국전산응용수학회 2003 Journal of applied mathematics & informatics Vol.13 No.1
The paper considers two mutually independent pests in presence of their common predator and discusses their control biologically by release of additional predators and chemically by using non-selective non-residual pesticide. It also verifies the results by special choice of parameters.
Effect of Butyrophilin Gene Polymorphism on Milk Quality Traits in Crossbred Cattle
Bhattacharya, T.K.,Misra, S.S.,Sheikh, Feroz D.,Sukla, Soumi,Kumar, Pushpendra,Sharma, Arjava Asian Australasian Association of Animal Productio 2006 Animal Bioscience Vol.19 No.7
A genetic polymorphism study on butyrophilin gene was carried out to explore variability of this gene and to estimate effects of such variability on milk quality traits in crossbred cattle. Polymorphism was unraveled by conducting Hae III PCR-RFLP of this gene. Three genotypes such as AA, BB and AB and two alleles namely A and B were observed in crossbred population. The frequencies of genotypes and alleles were 0.78, 0.17 and 0.04 for AA, AB and BB genotypes, respectively, and 0.87 and 0.13 for A and B alleles, respectively. The nucleotides, which have been substituted from allele A to B, were observed as C to G ($71^{st}$ nucleotide), C to T ($86^{th}$ nucleotide), A to T ($217^{th}$ nucleotide), G to A ($258^{th}$ nucleotide), A to C ($371^{st}$ nucleotide) and C to T ($377^{th}$ nucleotide). The nucleotide substitutions at $71^{st}$, $86^{th}$ and $377^{th}$ position of the fragment were found as silent mutations whereas nucleotide changes at $217^{th}$, $258^{th}$ and $371^{st}$ positions were detected as substitution of amino acid lysine with arginine, valine with isoleucine, and leucine with proline from allele A to B. The genotypes had significant effects ($p{\leq}0.05$) on total milk solid%, fat%, SNF%, while showing nonsignificant impact on total protein%. AA genotype produced highest average yield for all the traits.
A Likely Detection of a Two-planet System in a Low-magnification Microlensing Event
Suzuki, D.,Bennett, D. P.,Udalski, A.,Bond, I. A.,Sumi, T.,Han, C.,Kim, Ho-il.,Abe, F.,Asakura, Y.,Barry, R. K.,Bhattacharya, A.,Donachie, M.,Freeman, M.,Fukui, A.,Hirao, Y.,Itow, Y.,Koshimoto, N.,Li, American Astronomical Society 2018 The Astronomical journal Vol.155 No.6
The First Planetary Microlensing Event with Two Microlensed Source Stars
Bennett, D. P.,Udalski, A.,Han, C.,Bond, I. A.,Beaulieu, J.-P.,Skowron, J.,Gaudi, B. S.,Koshimoto, N.,Abe, F.,Asakura, Y.,Barry, R. K.,Bhattacharya, A.,Donachie, M.,Evans, P.,Fukui, A.,Hirao, Y.,Itow, American Astronomical Society 2018 The Astronomical journal Vol.155 No.3
Growth Hormone Gene Polymorphism and Its Effect on Birth Weight in Cattle and Buffalo
Biswas, T.K.,Bhattacharya, T.K.,Narayan, A.D.,Badola, S.,Kumar, Pushpendra,Sharma, Arjava Asian Australasian Association of Animal Productio 2003 Animal Bioscience Vol.16 No.4
The study was carried out in Sahiwal, Holstein Friesian, Jersey and crossbred cattle and Murrah, Bhadwari, Jaffarabadi, Nagpuri and Surti buffaloes maintained at different organized herds to work out the polymorphism at growth hormone locus and study its effect on birth weight. A 223 bp fragment of the gene was amplified and digested with Alu I restriction enzyme. Two alleles, L and V with three genotypes LL, LV and VV were observed in Jersey, Holstein and cross bred cattle. Sahiwal cattle and buffalo were monomorphic for this locus producing only one genotype LL and one allele L. The frequency of L allele was comparatively higher in Holstein and crossbred cattle while in Jersey breed, the frequency of this allele was intermediate. The effect of genotype on birth weight was significant and LV genotype had higher birth weight than other genotypes. Hence, LV genotype in Holstein Friesian favored higher birth weight.
Ali, M.,You, Y.A.,Sur, D.,Kanungo, S.,Kim, D.R.,Deen, J.,Lopez, A.L.,Wierzba, T.F.,Bhattacharya, S.K.,Clemens, J.D. Butterworths ; Elsevier Science Ltd 2016 Vaccine Vol.34 No.4
Background: The test-negative design (TND) has emerged as a simple method for evaluating vaccine effectiveness (VE). Its utility for evaluating oral cholera vaccine (OCV) effectiveness is unknown. We examined this method's validity in assessing OCV effectiveness by comparing the results of TND analyses with those of conventional cohort analyses. Methods: Randomized controlled trials of OCV were conducted in Matlab (Bangladesh) and Kolkata (India), and an observational cohort design was used in Zanzibar (Tanzania). For all three studies, VE using the TND was estimated from the odds ratio (OR) relating vaccination status to fecal test status (Vibrio cholerae O1 positive or negative) among diarrheal patients enrolled during surveillance (VE= (1-OR)x100%). In cohort analyses of these studies, we employed the Cox proportional hazard model for estimating VE (=1-hazard ratio)x100%). Results: OCV effectiveness estimates obtained using the TND (Matlab: 51%, 95% CI:37-62%; Kolkata: 67%, 95% CI:57-75%) were similar to the cohort analyses of these RCTs (Matlab: 52%, 95% CI:43-60% and Kolkata: 66%, 95% CI:55-74%). The TND VE estimate for the Zanzibar data was 94% (95% CI:84-98%) compared with 82% (95% CI:58-93%) in the cohort analysis. After adjusting for residual confounding in the cohort analysis of the Zanzibar study, using a bias indicator condition, we observed almost no difference in the two estimates. Conclusion: Our findings suggest that the TND is a valid approach for evaluating OCV effectiveness in routine vaccination programs.
Substrate bias effects during diamond like carbon film deposition by microwave ECR plasma CVD
R.M. Dey,S.B. Singh,A. Biswas,R.B. Tokas,N. Chand,S. Venkateshwaran,D. Bhattacharya,N.K. Sahoo,S.W. Gosavi,S.K. Kulkarni,D.S. Patil 한국물리학회 2008 Current Applied Physics Vol.8 No.1
Diamond like carbon (DLC) coatings were deposited on silicon(11) substrates by microwave electron cyclotron resonance (ECR)plasma CVD process using a plasma of Ar and CH4 gases under the inuence of DC self bias generated on the substrates by applicationof RF (13.56 MHz) power. DLC coatings were deposited under the varying inuence of DC bias (. 60 V to. 150 V) on the Si substrates.atomic force microscopy (AFM), Hardness and elastic modulus determination technique, Raman spectroscopy, scanning electronmicroscopy (SEM) and contact angle measurement. The results indicate that the lm grown at. 100 V bias has optimised propertieslike high sp3/sp2 ratio of carbon bonding, high refractive index (2.262.17) over wide spectral range 4001200 nm, low roughness of0.8 nm, high contact angle (80.) compared to the lms deposited at other bias voltages (. 60 V and . with each other and nd august explanation under the subplantation model for DLC growth.