341 research outputs found
Prajwal-Prathiksh/Museum-Path-Optimization: The Museum Problem - Optimization
No full textAbout
Contains the benchmarked and verified codes meant to optimize the route for a tourist visiting the Louvre Museum, such that the satisfaction level is maximised by visiting all/select exhibits in a fixed time interval.
Contains the working implementation of the following algorithms:
Branch and Bound (Limited Functionality)
Ant Colony Optimization (Limited Functionality)
Genetic Algorithm
Simulated Annealing Algorithm
Installation
Download the source code
Install the requirements using - pip install -r requirements.txt
Refer to the README.md for instructions on how to run.
Documentation
For further documentation on the algorithms and the references, refer to the documents in the ./presentations folder.
Thank you & Godspeed
Impact of physical and chemical mutagenesis on growth and flowering parameters in tuberose variety Arka Prajwal
No full textThe present study evaluated the effects of physical (gamma radiation) and chemical (ethyl methane sulphonate, EMS) mutagens on the growth and flowering parameters of Arka Prajwal in the M1V1 generation. Uniform-sized bulbs were subjected to gamma radiation (1.5 kR, 2.0 kR and 2.5 kR) and EMS treatments (0.3%, 0.4% and 0.5%) to induce variability. Growth parameters, including sprouting time, plant height, number of leaves, leaf dimensions and plant spread, exhibited significant variation across treatments. Gamma radiation delayed bulb sprouting (21.27–25.83 days) compared to control (12.53 days), while EMS treatments showed intermediate sprouting times (14.75–20.13 days). Plant height and leaf dimensions were highest in 0.4% EMS-treated plants, with notable increases in leaf width and plant spread. Flowering parameters demonstrated that EMS treatments accelerated spike emergence and floret opening compared to gamma irradiation. EMS-treated plants (0.3%) showed the earliest flowering, with reduced days to spike emergence (73.47 days) and first floret opening (90.38 days). Spike length and rachis length were slightly reduced in gamma-treated plants, while EMS-treated plants maintained longer spikes and rachis. The number of florets per spike was highest under EMS treatment (44.93 florets for 0.3%), accompanied by improved floret dimensions and weight. The study highlights that EMS enhanced growth and flowering performance in Arka Prajwal, while higher doses of gamma radiation adversely affected these parameters. This research provides insights into the potential of mutagenesis for improving floricultural traits in tuberose
Topics on electron,neutrino and axion scattering
No full textThesis: S.M., Massachusetts Institute of Technology, Department of Physics, 2015.This electronic version was submitted by the student author. The certified thesis is available in the Institute Archives and Special Collections.Cataloged from PDF version of thesis.Includes bibliographical references (pages 61-64).Under the broad topic of scattering, in this thesis we particularly investigate Lorentz invariance using Compton Scattering at the Compton Polarimeter located in Hall-C at Thomas Jefferson National Accelerator Facility. The Mississippi State Axion Search, an axion search experiment which uses light shining through a wall technique is described in detail, including its instrumentation, initial tests and future impact. Furthermore, a novel method of detection of solar anti-neutrinos based on coherent neutrino scattering is described. Additionally, on the instrumentation side, development of a multi-purpose beam instrument based on synchrotron light to measure the electron beam polarization, beam profile and intensity at the future Electron Ion Collider is presented.by Prajwal Mohanmurthy.S.M
MDO framework for university research collaboration: AGILE academy initiatives & outcomes
Full text linkAGILE Project is developing the 3rd generation MDO processes, which will support the development of the next generation aerospace products. The establishment of effective collaborative design methodologies is currently acknowledged as the key enabler for future product development processes. At the same time, the need to introduce collaborative design techniques within educational activities is also well recognized by the Academic, Research and Industrial communities. AGILE project supported by European Commission’s H2020 Programme, is setting the “AGILE Paradigm”, a conceptual framework which contains all the elements to implement a multidisciplinary collaborative design network. The AGILE Academy initiative is conceived to infuse into the Academic organizations and educational environments the “AGILE Paradigm”, and make available all the technologies developed within the AGILE Project, which support the implementation of such a Paradigm. This paper focus is on the inception, approach and results of the AGILE Academy participants from several universities around the world
The Museum Optimization Problem
No full textAbout
Contains the benchmarked and verified codes meant to optimize the route for a tourist visiting the Louvre Museum, such that the satisfaction level is maximised by visiting all/select exhibits in a fixed time interval.
Contains the working implementation of the following algorithms:
Branch and Bound (Limited Functionality)
Ant Colony Optimization (Limited Functionality)
Genetic Algorithm
Simulated Annealing Algorithm
Installation
Download the source code
Install the requirements using - pip install -r requirements.txt
Refer to the README.md for instructions on how to run.
Documentation
For further documentation on the algorithms and the references, refer to the documents in the ./presentations folder.
Thank you & Godspeed
Tissue-specific regulation of translational readthrough tunes functions of the traffic jam transcription factor
No full textTranslational readthrough (TR) occurs when the ribosome decodes a stop codon as a sense codon, resulting in two protein isoforms synthesized from the same mRNA. TR has been identified in several eukaryotic organisms; however, its biological significance and mechanism remain unclear. Here, we quantify TR of several candidate genes in Drosophila melanogaster and characterize the regulation of TR in the large Maf transcription factor Traffic jam (Tj). Using CRISPR/Cas9-generated mutant flies, we show that the TR-generated Tj isoform is expressed in a subset of neural cells of the central nervous system and is excluded from the somatic cells of gonads. Control of TR in Tj is critical for preservation of neuronal integrity and maintenance of reproductive health. The tissue-specific distribution of a release factor splice variant, eRF1H, plays a critical role in modulating differential TR of leaky stop codon contexts. Fine-tuning of gene regulatory functions of transcription factors by TR provides a potential mechanism for cell-specific regulation of gene expression
Determining the Effect of Integrated Nutrient Management (INM) on Growth and Flower Yield of Tuberose (Polianthes tuberosa L.) cv. Prajwal
No full textTuberose (Polyanthes tuberosa L.) is a highly valued commercial bulbous ornamental plant found in tropical and subtropical climates in the Amaryllidaceae family. It is high demand in both domestic and distant markets due to its long tepels, funnel shape, and strong fragrance. The field experiment was carried out to study the effect of integrated nutrient management on growth and flower yield of tuberose cv. Prajwal during the year of 2021 -2022 at Department of Horticulture, Annamalai University, Annamalainagar, Tamil Nadu. The investigation was laid out in Randomized Block Design with 10 treatments and replicated thrice. The treatments comprised of different levels of FYM (25% and 15%), poultry manure (25% and 15%), vermicompost (25 % and 15 %), inoculation of Azotobacter (2 kg ha-1) and phosphate solubilizing bacteria (2 kg ha-1) along with RDF (100 % and 75 %). Among the different treatments, T10 (75 % RDF + Azotobacter @ 2 kg ha-1 + PSB @ 2 kg ha-1) was discovered to be more successful in improving all growth, physiological and flowering characters viz., plant height (51.75 cm), number of side shoots plant-1 (11.23), leaf area (98.76 cm2), chlorophyll content (0.99 mg g-1), dry matter production (42.37 g plant-1) and flowering and yield parameter viz., number of spike plant-1 (3.12), length of spike (105.30 cm), number of florets spike-1 (56.11) and flower yield ha-1 (15.72 t ha‑1)
Low-cost uni-directional PFC for 3-phase systems
No full textPower consumed by any equipment connected to the grid must be regulated to facilitate the reliable and efficient operation of the grid and for smooth equipment operation of other consumers. Power factor is one of the major power quality measurement tool. All the electrical equipment connected to the grid must comply with the power factor limits as specified under various standards. This thesis aims at the development of a cost-effective power factor correction converter for a motor drive with a power range up to 10 kW, which is also robust for line and load transients.Electrical Engineerin
Publisher Correction: Harnessing a decade of research at the Research Institute for Bioscience and Biotechnology in Kathmandu, Nepal: Proceedings of the Fourth International Conference ICBB-2022
No full textSeveral publisher's mistakes in affiliations of authors and body text. Although authors informed the publisher, the following mistakes still occurred in the text of the article [1]. The list of the corrected parts of the text is mentioned as per below: Page 1 — The RIBB was founded in 2011 with the mission to advance the fields of bioscience, engineering, innovation and education by collaborating with academic and other research organizations to conduct high quality research in a world-class academic and professional environment. Page 2 — The fourth edition, the ICBB-2022, entitled ‘A decade in research: Celebrating RIBB’s 10th anniversary’, encompassed a wider variety of research themes. Page 2 — Reference 6 should be: Majhi R, Maharjan R, Shrestha M, Mali A, Basnet A, Baral M, Duwal R, Manandhar R, Rajbhandari P. Effect of altitude and solvent on Psidium guajava Linn. leaves extracts: phytochemical analysis, antioxidant, cytotoxicity and antimicrobial activity against food spoilage microbes. BMC chemistry. 2023 Dec;17(1):1–6. Page 2 — The proceedings ICBB-2022 included a total of 32 abstracts. These abstracts covered a wide range of research topics under each thematic session. Page 2 — As organizers, we are immensely pleased that we were able to continue this conference to its fourth edition. Page 3 — A1 Abstract “Workshop on public engagement program at school”. Suvechhya Bastola1, 2, Alba Abad1, 3, Rojlina Manandhar4, Surakshya Singh4, Bibek Chandra Mahaseth4, Kamana Dawadi4, Lochan Pandeya4. 1 Engage Nepal with Science, Edinburgh, UK; 2 Learning Lab, Research Institute for Bioscience and Biotechnology, Kathmandu, Nepal; 3 Wellcome Centre for Cell Biology, University of Edinburgh, Edinburgh, UK; 4 Department of Natural Products and Green Chemistry, Research Institute for Bioscience and Biotechnology, Kathmandu, Nepal. Page 4 — A3 RIBB’s 10th year journey: story presentation. Page 14 — A28 Abstract “Isolation, antifungal activity, physiological features, and growth potential of native Trichoderma spp. on alternative substrates”. Rozina Giri1, 2, Sagun K.C.1, 2, Sanju Tamang1, 2, Surakshya Singh1, 2, Nawanit Kumar Mahato1, Ashok Bhattarai, 3, Mitesh Shrestha1, 2. 1 Department of Applied Microbiology and Food Technology, Research Institute for Bioscience and Biotechnology, Kathmandu, Nepal; 2 Kantipur Valley College, Kumaripati, Lalitpur, Nepal; 3 Praramva Biotech Pvt. Ltd. Kathmandu, Nepal. Page 14 — A29 Abstract “Fluorescence properties of organic contamination in water”. Sishir Gautam1, Suvechhya Bastola2, Anusa Thapa1, Prashant Waiba1, Sanket Bohora1, Prajwal Rajbhandari2, Thomas Krauss3, Ashim Dhakal1. 1 Phutung Research Institute, Kathmandu, Nepal; 2 Department of Applied Microbiology and Food Technology, Research Institute for Bioscience and Biotechnology, Kathmandu, Nepal 3 University of York, York, UK. Page 16 — A32 Abstract “Efficacy of biological treatments against root-knot nematode (Meloidogyne spp.) in okra (Abelmoschus esculentus L.) at Nawalparasi, Nepal”. Kritika Adhikari1, Gaurav Adhikari1, 2, Susmita Sigdel1, Santosh Marahatta1. 1 Agriculture and Forestry University, Rampur, Nepal; 2 Department of Natural Products and Green Chemistry, Research Institute for Bioscience and Biotechnology, Kathmandu, Nepal. The original was updated.</p
Cylinder Drag Reduction Using Discrete Surface Roughness: An Experimental Investigation Into the Effect of Cylindrical Roughness Elements
No full textThis thesis investigates the influence of Cylindrical Distributed Roughness Elements (polka-dots) on cylinder flow, with a focus on potential applications in sports aerodynamics. The primary goals are twofold: to explore the mechanism behind tripping and to analyse how the dimensions (height, width, spacing) of polka-dots affect flow characteristics. The research employs an experimental approach, utilising balance measurements to quantify drag within the relevant Reynolds number range experienced by the limbs of speed-skaters. Additionally, Particle Image Velocimetry (PIV) measurements are conducted to examine the boundary layer and wake flow, revealing insights into how different polka-dot geometries impact flow characteristics.11 polka-dot configurations were tested wherein the polka-dot height, diameter and spanwise (flow-normal) spacing was varied. Two PIV domains were imaged: the boundary layer flow before and after the polka-dot (covering an azimuthal range of about 40◦ of the circular profile), and the wake domain of the cylinder (about 2 diameters into the downstream flow). The boundary layer flow images were used to characterise the flow seen by the polka-dot array, and how it is affected by changes in the polka-dot geometry. The wake domain PIV imagery was used to examine the shape and dimensions of the cylinder wake.Among the 11 tested polka-dot configurations, 10 effectively triggered drag reduction to varying extents within the relevant regime. The minimum drag coefficient was achieved by the configuration with the polka-dots of greatest diameter. It was also seen that increasing polka-dot height is likely to cause premature separation which is further exacerbated by a narrower polka-dot spacing. In general, results indicate that shorter and wider polka-dots cause transition at lower Reynolds numbers, and a greater reduction in drag occurs when transition takes place at higher Reynolds numbers. Polka-dots placed in closer proximity initiate flow tripping earlier, while wider spacing results in more substantial drag reduction. However, it is observed that the polka-dots, when spaced closer together, see a lower flow velocity for the same polka-dot height and may lead to premature separation.In terms of the wake width, a high linear correlation is seen between the measured wake width and the measured coefficient of drag (r2 ≈ 0.9). It is also seen that for drag coefficient values close to the minimum drag coefficient value, the wake width sees minimal change. The change in wake geometry is then seen as a change in the wake tapering (downstream decrease of the wake width) and the streamwise wake length. Therefore, a larger wake imaging domain in the streamwise direction is likely to allow for a more accurate correlation of the wake geometry and the drag coefficient.While the study offers valuable insights, several recommendations are put forth for further research. Expanding the wake imaging domain is suggested to enhance correlations with the drag coefficient, and investigating spanwise flow variations would provide deeper insight into the tripping mechanism.Aerospace Engineering | Aerodynamic
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