Landslide susceptibility mapping using modified information value model in the Lish river basin of Darjiling Himalaya

Biplab Mandal,Sujit Mandal 대한공간정보학회 2017 Spatial Information Research Vol.25 No.2

The spatial distribution of mountain slope instability deals with the potential zones for landslides occurrences. In the present study, information value model was modified to make the modified information value model using RS & GIS to assess landslide susceptibility of the Lish river basin of Eastern Darjeeling Himalaya. Eleven important causative factors of slope instability like slope, aspect, curvature, lithology, geomorphology, soil, NDVI, drainage density, relative relief, LULC, elevation were considered and corresponding thematic data layers were generated in Arc GIS (10.1) environments. 87 very small to large various types landslide locations were identified with the help GPS through extensive field survey and incorporating Google earth image (2015). The entire thematic data layers were extracted from ASTER GDEM, Topographical maps (78 B/9; 1: 50,000), LANDSAT 8 OLI satellite image, Google earth image (2015) etc. All the thematic data layers were integrated on GIS environment to generate the landslide susceptibility map of the study area. The Lish river basin was classified into six landslide susceptibility zones i.e. very low, low, moderate, moderately high, high and very high considering the ranges of landslide susceptibility index. Finally, an accuracy assessment was done in Arc GIS by ground truth verification of 54 training sites having landslides from Google earth image (2015) for each landslide susceptibility class and compared with probability model which demonstrates the overall accuracy of the present study is 87.04% and Kappa coefficient is 84.41%.

A framework of Intelligent Tutorial System to incorporate adaptive learning and assess the relative performance of adaptive learning learning and assess the relative performance of adaptive learning

Biplab Kanti Das,Saurabh Pal 보안공학연구지원센터 2011 International Journal of Multimedia and Ubiquitous Vol.6 No.1

Assessment of Biomass and Carbon Stock in Sal (Shorea robusta Gaertn.) Forests under Two Management Regimes in Tripura, Northeast India

Biplab Banik,Dipankar Deb,Sourabh Deb,B. K. Datta 강원대학교 산림과학연구소 2018 Journal of Forest Science Vol.34 No.3

We investigated tree composition, stand characteristics, biomass allocation pattern and carbon storage variability in Sal forests (Shorea robusta Garten.) under two forest management regimes (Sal forest and Sal plantation) in Tripura, Northeast India. The results revealed higher species richness (29 species), stand density of 1060.00±11.12 stems ha−1 and diversity index (1.90±0.08) in Sal forest. and lower species richness (4 species), stand density of 230.00±37.22 stems ha−1 and diversity index (0.38±0.15) in Sal plantation. The total basal cover (33.02±4.87 m2 ha−1) and dominance (0.76±0.08) were found higher in Sal plantation than the Sal forest (22.53±0.38 m2 ha−1 and 0.23±0.02 respectively). The total vegetation carbon density was recorded higher in Sal plantation (219.68±19.65 Mg ha−1) than the Sal forest (167.64±16.73 Mg ha−1). The carbon density estimates acquired in this study suggest thatSal plantation in Tripura has the potentiality to store a large amount of atmospheric carbon inspite of a very low species diversity. However, Sal forests has also an impending sink of carbon due to presence of large number of young trees.

Child marriage and health disparities in adulthood: the differential risk of untreated hypertension among young adult women in India

Biplab Kumar Datta,Mohammad Rifat Haider 대한고혈압학회 2022 Clinical Hypertension Vol.28 No.-

Hypertension is a major risk factor of cardiovascular diseases, which is the leading cause of premature mortality worldwide. While untreated hypertension heightens the risk of mortality and morbidity among hypertensive individuals, access to hypertension care in low-and-middle income countries has ties with various socioeconomic inequalities. Child brides represent a marginalized group of population who experience various socioeconomic disadvantages. This study investigates whether there exists any disparity in receiving treatment for hypertension between child brides at young adult age and their same-age peers who were married as adults.We obtained data on 22,140 currently married hypertensive women aged 20 to 34 years from the 2015–16 wave of National Family Health Survey (NFHS-4) of India. We estimated multilevel univariate and multivariable logistic regressions to obtain the odds in favor of not receiving treatment for hypertension. We compared the odds for child brides with those of their peers who were married as adults. Among the study participants, 72.6% did not receive any treatment for hypertension. While the share was 70.6% among women who were married as adults, it was 4.3 percentage points higher ( P < 0.001) among the child brides. Results from the multilevel logistic regressions reveal that adjusted odds of having untreated hypertension for child brides were 1.12 times (95% confidence interval, 1.00–1.25) that of those who were married as adults. Our findings show that hypertensive women who were married as children are at greater risk of not receiving hypertension care at young adult age. Therefore, young women who got married in their childhood should be targeted for regular screening and proper referral and treatment to avoid further detrimental effects of elevated blood pressure.

Bimetallic <i>copper cobalt selenide</i> nanowire-anchored woven carbon fiber-based structural supercapacitors

Deka, Biplab K.,Hazarika, Ankita,Kim, Jisoo,Kim, Namhun,Jeong, Hoon Eui,Park, Young-Bin,Park, Hyung Wook Elsevier 2019 Chemical Engineering Journal Vol.355 No.-

<P><B>Abstract</B></P> <P>Structural supercapacitors provide a variety of opportunities for woven carbon fibers in portable electronics, hybrid automobiles and aerospace applications. We describe herein the synthesis of bimetallic Cu-Co selenide nanowires based on woven carbon fibers, and their use as electrodes in supercapacitors. Woven Kevlar fiber is used as separator for the electrodes and a polyester resin with an ionic liquid and lithium salt is used as solid polymer electrolyte. The supercapacitors exhibit efficient energy storage and significant enhancements in mechanical strength (89.38%) and modulus (70.41%) over those of bare woven carbon fiber base supercapacitors. The specific capacitance of these supercapacitors increases from 0.197 F g<SUP>−1</SUP> to 28.63 F g<SUP>−1</SUP> after the growth of nanowires, with accordingly high energy density (191.64 mW h kg<SUP>−1</SUP>) and power density (36.65 W kg<SUP>−1</SUP>). In situ mechano-electrochemical tests of these supercapacitors yield excellent capacitance retention (77.3%) at the mechanical failure point (481.29 MPa).</P> <P><B>Highlights</B></P> <P> <UL> <LI> <I>CuCoSe</I> nanowire grown WCF based structural supercapacitor was developed. </LI> <LI> Device exhibited high electrochemical performance with brilliant cyclicability. </LI> <LI> Polyester resin based electrolyte was developed with ionic liquid and Li-salt. </LI> <LI> Excellent energy (191.64 mWhk g<SUP>−1</SUP>) and power densities (36.65 W kg<SUP>−1</SUP>) achieved. </LI> <LI> At mechanical failure (481.29 MPa), 77.3% capacitance retention were recorded. </LI> </UL> </P>

Comparative Reverse Screening Approach to Identify Potential Anti-neoplastic Targets of Saffron Functional Components and Binding Mode

Bhattacharjee, Biplab,Vijayasarathy, Sandhya,Karunakar, Prashantha,Chatterjee, Jhinuk Asian Pacific Journal of Cancer Prevention 2012 Asian Pacific journal of cancer prevention Vol.13 No.11

Background: In the last two decades, pioneering research on anti-tumour activity of saffron has shed light on the role of crocetin, picrocrocin and safranal, as broad spectrum anti-neoplastic agents. However, the exact mechanisms have yet to be elucidated. Identification and characterization of the targets of bioactive constituents will play an imperative role in demystifying the complex anti-neoplastic machinery. Methods: In the quest of potential target identification, a dual virtual screening approach utilizing two inverse screening systems, one predicated on idTarget and the other on PharmMapper was here employed. A set of target proteins associated with multiple forms of cancer and ranked by Fit Score and Binding energy were obtained from the two independent inverse screening platforms. The validity of the results was checked by meticulously analyzing the post-docking binding pose of the picrocrocin with Hsp90 alpha in AutoDock. Results: The docking pose reveals that electrostatic and hydrogen bonds play the key role in inter-molecular interactions in ligand binding. Picrocrocin binds to the Hsp90 alpha with a definite orientation appropriate for nucleophilic attacks by several electrical residues inside the Hsp90-alpha ATPase catalytic site. Conclusion: This study reveals functional information about the anti-tumor mechanism of saffron bioactive constituents. Also, a tractable set of anti-neoplastic targets for saffron has been generated in this study which can be further authenticated by in vivo and in vitro experiments.

Cross sections for electron collisions with NF3

Goswami, Biplab,Naghma, Rahla,Antony, Bobby American Physical Society 2013 Physical review. A. Atomic, molecular, and optical Vol.88 No.3

Assessment of Biomass and Carbon Stock in Sal (Shorea robusta Gaertn.) Forests under Two Management Regimes in Tripura, Northeast India

Banik, Biplab,Deb, Dipankar,Deb, Sourabh,Datta, B.K. Institute of Forest Science 2018 Journal of Forest Science Vol.34 No.3

We investigated tree composition, stand characteristics, biomass allocation pattern and carbon storage variability in Sal forests (Shorea robusta Garten.) under two forest management regimes (Sal forest and Sal plantation) in Tripura, Northeast India. The results revealed higher species richness (29 species), stand density of $1060.00{\pm}11.12stems\;ha^{-1}$ and diversity index ($1.90{\pm}0.08$) in Sal forest. and lower species richness (4 species), stand density of $ 230.00{\pm}37.22stems\;ha^{-1}$ and diversity index ($0.38{\pm}0.15$) in Sal plantation. The total basal cover $33.02{\pm}4.87m^2ha^{-1}$) and dominance ($0.76{\pm}0.08$) were found higher in Sal plantation than the Sal forest ($22.53{\pm}0.38m^2ha^{-1}$ and $0.23{\pm}0.02$ respectively). The total vegetation carbon density was recorded higher in Sal plantation ($219.68{\pm}19.65Mg\;ha^{-1}$) than the Sal forest ($167.64{\pm}16.73Mg\;ha^{-1}$). The carbon density estimates acquired in this study suggest that Sal plantation in Tripura has the potentiality to store a large amount of atmospheric carbon inspite of a very low species diversity. However, Sal forests has also an impending sink of carbon due to presence of large number of young trees.

Chemogenomics Profiling of Drug Targets of Peptidoglycan Biosynthesis Pathway in Leptospira interrogans by Virtual Screening Approaches

( Bhattacharjee Biplab ),( Rose Mary Simon ),( Chaithra Gangadharaiah ),( Prashantha Karunakar ) 한국미생물 · 생명공학회 2013 Journal of microbiology and biotechnology Vol.23 No.6

Leptospirosis is a worldwide zoonosis of global concern caused by Leptospira interrogans. The availability of ligand libraries has facilitated the search for novel drug targets using chemogenomics approaches, compared with the traditional method of drug discovery, which is time consuming and yields few leads with little intracellular information for guiding target selection. Recent subtractive genomics studies have revealed the putative drug targets in peptidoglycan biosynthesis pathways in Leptospira interrogans. Aligand library for the murD ligase enzyme in the peptidoglycan pathway has also been identified. Our approach in this research involves screening of the pre-existing ligand library of murD with related protein family members in the putative drug target assembly in the peptidoglycan biosynthesis pathway. A chemogenomics approach has been implemented here, which involves screening of known ligands of a protein family having analogous domain architecture for identification of leads for existing druggable protein family members. By means of this approach, one murC and one murF inhibitor were identified, providing a platform for developing an antileptospirosis drug targeting the peptidoglycan biosynthesis pathway. Given that the peptidoglycan biosynthesis pathway is exclusive to bacteria, the in silico identified mur ligase inhibitors are expected to be broad-spectrum Gram-negative inhibitors if synthesized and tested in in vitro and in vivo assays.

Identification of Proapoptopic, Anti-Inflammatory, Anti-Proliferative, Anti-Invasive and Anti-Angiogenic Targets of Essential Oils in Cardamom by Dual Reverse Virtual Screening and Binding Pose Analysis

Bhattacharjee, Biplab,Chatterjee, Jhinuk Asian Pacific Journal of Cancer Prevention 2013 Asian Pacific journal of cancer prevention Vol.14 No.6

Background: Cardamom (Elettaria cardamom), also known as "Queen of Spices", has been traditionally used as a culinary ingredient due to its pleasant aroma and taste. In addition to this role, studies on cardamom have demonstrated cancer chemopreventive potential in in vitro and in vivo systems. Nevertheless, the precise poly-pharmacological nature of naturally occurring chemo-preventive compounds in cardamom has still not been fully demystified. Methods:In this study, an effort has been made to identify the proapoptopic, anti-inflammatory, anti-proliferative, anti-invasive and anti-angiogenic targets of Cardamom's bioactive principles (eucalyptol, alpha-pinene, beta-pinene, d-limonene and geraniol) by employing a dual reverse virtual screening protocol. Experimentally proven target information of the bioactive principles was annotated from bioassay databases and compared with the virtually screened set of targets to evaluate the reliability of the computational identification. To study the molecular interaction pattern of the anti-tumor action, molecular docking simulation was performed with Auto Dock Pyrx. Interaction studies of binding pose of eucalyptol with Caspase 3 were conducted to obtain an insight into the interacting amino acids and their inter-molecular bondings. Results:A prioritized list of target proteins associated with multiple forms of cancer and ranked by their Fit Score (Pharm Mapper) and descending 3D score (Reverse Screen 3D) were obtained from the two independent inverse screening platforms. Molecular docking studies exploring the bioactive principle targeted action revealed that H- bonds and electrostatic interactions forms the chief contributing factor in inter-molecular interactions associated with anti-tumor activity. Eucalyptol binds to the Caspase 3 with a specific framework that is well-suited for nucleophilic attacks by polar residues inside the Caspase 3 catalytic site. Conclusion:This study revealed vital information about the poly-pharmacological anti-tumor mode-of-action of essential oils in cardamom. In addition, a probabilistic set of anti-tumor targets for cardamom was generated, which can be further confirmed by in vivo and in vitro experiments.