A5005311880- Granular flow and fluidized beds
- Drug Solubulity and Delivery Systems
- Mineral Processing and Grinding
- Particle Dynamics in Fluid Flows
- Advanced Drug Delivery Systems
- Minerals Flotation and Separation Techniques
- Protein purification and stability
- Fluid Dynamics and Heat Transfer
- Phase Equilibria and Thermodynamics
- Cyclone Separators and Fluid Dynamics
- Crystallization and Solubility Studies
- Microencapsulation and Drying Processes
- Advancements in Transdermal Drug Delivery
- Surfactants and Colloidal Systems
- Material Dynamics and Properties
- Advanced Clustering Algorithms Research
- Adhesion, Friction, and Surface Interactions
- Injection Molding Process and Properties
- Landslides and related hazards
- Advanced Statistical Methods and Models
- Microfluidic and Bio-sensing Technologies
- Analytical Chemistry and Chromatography
- Subcritical and Supercritical Water Processes
- Aerosol Filtration and Electrostatic Precipitation
- Polymer Foaming and Composites
New Jersey Institute of Technology
2016-2025
Ahmedabad University
2025
University of Puerto Rico-Mayaguez
2025
Rutgers, The State University of New Jersey
2007-2025
New Jersey Department of Environmental Protection
2012-2023
Institute for Plasma Research
2011-2021
Sangath
2021
Integrated Test Range
2013-2014
Southern University and Agricultural and Mechanical College
2002
Qi2
1992
Clustering methods need to be robust if they are useful in practice. In this paper, we analyze several popular clustering and show that have much common. We also establish a connection between fuzzy set theory statistics, point out the similarities statistical such as weighted least-squares technique, M estimator, minimum volume ellipsoid algorithm, cooperative estimation, minimization of probability randomness, epsilon contamination model. By gleaning common principles upon which proposed...
Abstract An experimental study is conducted to determine the effect of different types nanoparticles on gas fluidization characteristics nanoparticle agglomerates. Taking advantage extremely high porosity bed, optical techniques are used visualize flow behavior, as well measure sizes fluidized agglomerates at bed surface. Upon fluidizing 11 materials, two agglomerate particulate (APF) and bubbling (ABF), observed systematically investigated. A simple analytical model developed predict for...
In this paper we report measurements of collisional properties spheres using high-speed video analysis. These results agree with a simple collision operator. We study the size and velocity dependences coefficient restitution in normal direction. The experimental data are compared relevant models energy dissipation show existence two regimes. For large impact velocities plastic deformation model is good agreement our measurements, while for smaller viscoelastic gives qualitative agreement.
Several generalizations of the fuzzy c-shells (FCS) algorithm are presented for characterizing and detecting clusters that hyperellipsoidal shells. An earlier generalization, adaptive (AFCS) algorithm, is examined in detail found to have global convergence problems when shapes be detected partial. New formulations considered wherein norm inducing matrix distance metric unconstrained contrast AFCS algorithm. The resulting called AFCS-U performs better partial shapes. Another formulation based...
The objective of this work was to develop a better understanding potentially scalable, liquid antisolvent (LAS) precipitation process, for the preparation stable aqueous suspensions ultrafine particles poorly water-soluble active pharmaceutical ingredients (APIs). A novel combination jets, ultrasound, polymers, and surfactants used stabilization griseofulvin (GF). Use ultrasound high stream velocities enhances micromixing, whereas addition polymers/surfactants inhibits/lowers particle...
Abstract Vigorous homogeneous fluidization of 12‐nm silica particles was easily achieved by coupling aeration with vibration. Vibration (with frequency in the range 30 to 200 Hz, and vibrational acceleration 0 5 g) found be necessary achieve smooth fluidization. The minimum velocity, defined as lowest gas velocity at which pressure drop across bed reaches a plateau, approximately 0.3–0.4 cm/s, essentially independent acceleration. However, expanded almost immediately after air turned on,...
A new type of Fuzzy Clustering algorithm called Fuzzy-Shell (FSC) is introduced, The FSC seeks cluster prototypes that are p-dimensional hyper-spherical-shells. In two-dimensional data, this amounts to finding circles. Thus the can be applied for detection circles in digital images. does not require data-points any particular order, therefore its performance compared with global transformation techniques such as Hough transforms. Several numerical examples considered and methods based on...
A novel scheme for cluster validity using a test random position hypothesis is proposed. The tested against an alternative clustered on every produced by partitioning algorithm. statistic such as the well-known Hopkins could be used basis to accept or reject hypothesis, which also null in this case. known fair estimator of randomness data set. concept borrowed from clustering tendency domain and its applicability validating clusters shown here two artificially constructed sets.
Abstract While it is well known that flow aids such as fumed silica can be added to improve flowability and fluidizability of cohesive powders, the improvements observed depend on how are blended together with powders. In this work, dry particle coating used deposit a very small amount nano‐sized particles (as low 0.01 wt %) high degree precision onto surface cohesive, Geldart Group C powders make them fluidize like A model taking into account effect size guest host area coverage (SAC)...
The ITER project requires additional heating by two neutral beam injectors, each accelerating to 1 MV a 40 A of negative deuterium ions, deliver the plasma power about 17 MW for one hour. As these requirements have never been experimentally met, it was recognized as necessary setup test facility, PRIMA (Padova Research on Megavolt Accelerator), in Italy, including full-size ion source, SPIDER, and prototype whole injector, MITICA, aiming develop injectors be installed ITER. This realization...
Popular relational-data clustering algorithms, relational dual of fuzzy c-means (RFCM), non-Euclidean RFCM (NERFCM) (both by Hathaway et al), and FANNY (by Kaufman Rousseeuw) are examined. A new algorithm, which is a generalization FANNY, called the data (FRC) introduced, having an identical objective functional as RFCM. However, FRC does not have restriction RFCM, that derived from Euclidean distance measure dissimilarity between objects, it also limitations including use fixed membership...
Abstract Some experimental observations on the fluidization characteristics of nanoparticles in form agglomerates with magnetic assistance are presented. The nanoagglomerates consist Degussa Aerosil® R974 fumed silica, a primary particle size 12 nm. An oscillating AC field is used to excite large (mm size) permanent particles mixed nanoparticle agglomerates, and behavior nanoagglomerates, including regime, minimum velocity, bed pressure drop, expansion investigated. It shown that, aid an at...