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Multiplexed Protein Patterns on a Photosensitive Hydrophilic Polymer Matrix
Bhatnagar, Parijat,Malliaras, George G.,Kim, Il,Batt, Carl A. WILEY-VCH Verlag 2010 Advanced Materials Vol.22 No.11
<B>Graphic Abstract</B> <P>A photosensitive hydrogel film containing a photocleavable protecting group is attached to silicon oxide. Projection photolithography is used to generate carboxylic groups in selective patterns on this film, to which proteins are coupled through their primary amine groups. The carboxylic groups on the proteins are chemically protected and the process is repeated to sequentially pattern additional proteins on the hydrogel surface. <img src='wiley_img_2010/09359648-2010-22-11-ADMA200903255-content.gif' alt='wiley_img_2010/09359648-2010-22-11-ADMA200903255-content'> </P>
Seismic analysis of dam under different upstream water levels
Bhatnagar, Shashank,Kranthikumar, A,Sawant, VA Techno-Press 2016 Advances in computational design Vol.1 No.3
The present paper describes the results of numerical modeling of a dam founded on loose liquefiable deposit using PLAXIS-3D finite element software. Effect of a different dam water level on parameters like displacements, Excess Pore water pressures, Liquefaction potential and Accelerations is studied. El- Centro earthquake motion is applied as input earthquake motion. The results of this study show that different upstream dam water level greatly affects the displacements, excess pore pressure and displacement tendency of the underlying foundation soils and the dam.
A New Perspective to Stable Marriage Problem in Profit Maximization of Matrimonial Websites
Bhatnagar, Aniket,Gambhir, Varun,Thakur, Manish Kumar Korea Information Processing Society 2018 Journal of information processing systems Vol.14 No.4
For many years, matching in a bipartite graph has been widely used in various assignment problems, such as stable marriage problem (SMP). As an application of bipartite matching, the problem of stable marriage is defined over equally sized sets of men and women to identify a stable matching in which each person is assigned a partner of opposite gender according to their preferences. The classical SMP proposed by Gale and Shapley uses preference lists for each individual (men and women) which are infeasible in real world applications for a large populace of men and women such as matrimonial websites. In this paper, we have proposed an enhancement to the SMP by computing a weighted score for the users registered at matrimonial websites. The proposed enhancement has been formulated into profit maximization of matrimonial websites in terms of their ability to provide a suitable match for the users. The proposed formulation to maximize the profits of matrimonial websites leads to a combinatorial optimization problem. We have proposed greedy and genetic algorithm based approaches to solve the proposed optimization problem. We have shown that the proposed genetic algorithm based approaches outperform the existing Gale-Shapley algorithm on the dataset crawled from matrimonial websites.
Bhatnagar, Anita,Saluja, Sonal The Korean Society of Fisheries and Aquatic Scienc 2019 Fisheries and Aquatic Sciences Vol.22 No.7
Two dietary experiments were performed to evaluate the impact of the herb Mentha piperita as a dietary supplement on Catla catla. In Experiment 1, fingerlings (0.45-2.60 g) were fed on diets supplemented with M. piperita at different levels (P1, P2, P3, and P4 at 2, 4, 6, and $8g\;Kg^{-1}$ of feed) and C1 served as the control with no peppermint supplementation. In Experiment 2, fingerlings (0.40-3.15 g) were fed with diets containing autochthonous probiotic bacteria Bacillus coagulans (3000 colony forming unit $g^{-1}$) along with M. piperita (PP1-PP4 at 2, 4, 6, and $8g\;Kg^{-1}$ of feed) and feed C2 served as control containing probiotics but no peppermint. Significantly (P < 0.05) high values of growth parameters, digestive enzyme activities, low reed conservation ratio, low excretion of ammonia, and orthophosphates were observed in fingerlings fed with P3 for Experiment 1 and PP3 for Experiment 2. Hematological counts, phagocytic activity, and respiratory burst activity were also enhanced in fingerlings fed with M. piperita supplementation revealing that dietary administration of peppermint at optimum level can enhance the growth, digestibility, and immunity of C. catla fingerlings; however, incorporation of B. coagulans showed better growth and immunity revealing that synergistic effects of M. piperita and autochthonous probiotic in C. catla diets can lead to its sustainable aquaculture.
Removal of Nitrate from Water by Adsorption onto Zinc Chloride Treated Activated Carbon
Bhatnagar, Amit,Ji, Minkyu,Choi, Yang-Hun,Jung, Woosik,Lee, Sang-Hun,Kim, Sun-Joon,Lee, Giehyeon,Suk, Heejun,Kim, Hyoung-Soo,Min, Booki,Kim, Seong-Heon,Jeon, Byong-Hun,Kang, Joon-Wun Taylor Francis 2008 Separation science and technology Vol.43 No.4
<P> Adsorption study with untreated and zinc chloride (ZnCl2) treated coconut granular activated carbon (GAC) for nitrate removal from water has been carried out. Untreated coconut GAC was treated with ZnCl2 and carbonized. The optimal conditions were selected by studying the influence of process variables such as chemical ratio and activation temperature. Experimental results reveal that chemical weight ratio of 200% and temperature of 500°C was found to be optimum for the maximum removal of nitrate from water. Both untreated and ZnCl2 treated coconut GACs were characterized by scanning electron microscopy (SEM), Brunauer Emmett Teller (BET) N2-gas adsorption, surface area and Energy Dispersive X-Ray (EDX) analysis. The comparison between untreated and ZnCl2 treated GAC indicates that treatment with ZnCl2 has significantly improved the adsorption efficacy of untreated GAC. The adsorption capacity of untreated and ZnCl2 treated coconut GACs were found 1.7 and 10.2 mg/g, respectively. The adsorption of nitrate on ZnCl2 treated coconut GAC was studied as a function of contact time, initial concentration of nitrate anion, temperature, and pH by batch mode adsorption experiments. The kinetic study reveals that equilibrium was achieved within one hour. The adsorption data conform best fit to the Langmuir isotherm. Kinetic study results reveal that present adsorption system followed a pseudo-second-order kinetics with pore-diffusion-controlled. Results of the present study recommend that the adsorption process using ZnCl2 treated coconut GAC might be a promising innovative technology in future for nitrates removal from drinking water.</P>
Persistent Photoconductivity in Strained Epitaxial BiFeO<sub>3</sub> Thin Films
Bhatnagar, Akash,Kim, Young Heon,Hesse, Dietrich,Alexe, Marin American Chemical Society 2014 NANO LETTERS Vol.14 No.9
<P>A drastic change in the conductivity of strained BiFeO<SUB>3</SUB> (BFO) films is observed after illuminating them with above-band gap light. This has been termed as persistent photoconductivity. The enhanced conductivity decays exponentially with time. A trapping character of the sub-band levels and their subsequent gradual emptying is proposed as a possible mechanism.</P><P><B>Graphic Abstract</B> <IMG SRC='http://pubs.acs.org/appl/literatum/publisher/achs/journals/content/nalefd/2014/nalefd.2014.14.issue-9/nl502183j/production/images/medium/nl-2014-02183j_0005.gif'></P>
Outcome of Children with Severe Acute Malnutrition and Diarrhea: a Cohort Study
Bhatnagar, Sakshi,Kumar, Ruchika,Dua, Richa,Basu, Srikanta,Kumar, Praveen The Korean Society of Pediatric Gastroenterology 2019 Pediatric gastroenterology, hepatology & nutrition Vol.22 No.3
Purpose: Severe acute malnutrition (SAM) is an important public health problem which contributes to significant number of under five deaths. Protocol based management significantly decreases risk of deaths in children with medical complications. Methods: Outcome of children aged 2 months-5 years admitted and fulfilling definition of SAM having diarrhea (group A) was compared to children with SAM having medical complications other than diarrhea (group B). Both groups were managed according to standard recommended protocols and monitored and followed up for 12 weeks after discharge. Results: The average weight gain, defaulter rate, primary failure, secondary relapse rate and readmission rate were similar in both groups. Length of stay in group A was three days longer (p-value=0.039). Discharge rate was comparable with overall 68% of children successfully discharged and 50% of children reaching weight/height > -2 standard deviation at follow-up of 12 weeks. Conclusion: The current management protocol is equally effective for managing children with SAM having diarrhea. Good adherence to management protocol of dehydration and timely modification of therapeutic feeds in children with persistent diarrhea results in satisfactory weight gain.