Journal of Orthopaedics, Trauma and Rehabilitation
Objectives: Spinal fusion is an effective treatment for degenerative lumbar spine; however, confl... more Objectives: Spinal fusion is an effective treatment for degenerative lumbar spine; however, conflicting results exist regarding the best procedure. This study compares the clinical and radiological outcomes of transforaminal lumbar interbody fusion (TLIF) versus instrumented posterolateral fusion (PLF) in patients of degenerative lumbar spine disorders. Methods: Of the total 37 patients, 16 patients were operated with TLIF and 21 were operated with instrumented PLF with bone grafting. Duration of the study was from June 2017 to June 2019. Patients fulfilling the inclusion criteria were included in the study. Inclusion criteria were (1) age of patient ranging from 18 years to 70 years, (2) involvement of single level, (3) diagnosis of degenerative spine disease, and (4) minimum follow-up of 1 year. Radiographic parameters such as slippage of vertebrae, anterior and posterior disc heights, local disc lordosis, T12–S1 angle were measured, and fusion were assessed; comparison between pr...
In this review, the state of the art on the removal of malachite green dye from aqueous solution ... more In this review, the state of the art on the removal of malachite green dye from aqueous solution using adsorption technique is presented. The objective is to critically analyze different adsorbents available for malachite green dye removal. Hence, the available recent literature in the area is categorized according to the cost, feasibility, and availability of adsorbents. An extensive survey of the adsorbents, derived from various sources such as low cost biological materials, waste material from industry, agricultural waste, polymers, clays, nanomaterials, and magnetic materials, has been carried out. The review studies on different adsorption factors, such as pH, concentration, adsorbent dose, and temperature. The fitting of the adsorption data to various models, isotherms, and kinetic regimes is also reported.
Symbolic manipulation uncovers hidden constraints for a model and facilitates model reduction for... more Symbolic manipulation uncovers hidden constraints for a model and facilitates model reduction for solution. The present work points out possible pitfalls of this procedure and finds possible solutions. The performances of different reduced forms of a condenser model are compared under step and impulse perturbations. The system does not need to be at steady state before perturbation. Some symbolically manipulated models cause inconsistent reinitialization and convergence and introduce significant computational errors. Physically unreasonable system behavior thus emerges, which worsens with increasing model complexity. Nevertheless, the less symbolically manipulated models present realistic and accurate behaviors. Another approach to model reduction is the reformulation of a model through a physical insight. A physically reformulated model proposed for the system leads to accurate and physically reasonable system behavior.
Http Dx Doi Org 10 1080 07373937 2014 880714, Jan 3, 2014
Concentrations of solvent and polymer have been measured using confocal Raman spectroscopy in pol... more Concentrations of solvent and polymer have been measured using confocal Raman spectroscopy in poly(styrene)-tetrahydrofuran, poly(methyl methacrylate)-tetrahydrofuran, and poly(styrene)-pxylene systems. Free volume theory parameters have been regressed from the measured concentration data. Model-predicted concentration profiles are in very good agreement with the measured profiles in the case of a highly volatile solvent. For instance, freevolume-model-predicted profiles are in very good agreement in poly (styrene)-tetrahydrofuran system and poly(methyl methacrylate) -tetrahydrofuran system. However, the free volume model is not able to predict entire measured profiles in the case of less-volatile solvent in poly(styrene)-p-xylene system.
Journal of Orthopaedics, Trauma and Rehabilitation
Objectives: Spinal fusion is an effective treatment for degenerative lumbar spine; however, confl... more Objectives: Spinal fusion is an effective treatment for degenerative lumbar spine; however, conflicting results exist regarding the best procedure. This study compares the clinical and radiological outcomes of transforaminal lumbar interbody fusion (TLIF) versus instrumented posterolateral fusion (PLF) in patients of degenerative lumbar spine disorders. Methods: Of the total 37 patients, 16 patients were operated with TLIF and 21 were operated with instrumented PLF with bone grafting. Duration of the study was from June 2017 to June 2019. Patients fulfilling the inclusion criteria were included in the study. Inclusion criteria were (1) age of patient ranging from 18 years to 70 years, (2) involvement of single level, (3) diagnosis of degenerative spine disease, and (4) minimum follow-up of 1 year. Radiographic parameters such as slippage of vertebrae, anterior and posterior disc heights, local disc lordosis, T12–S1 angle were measured, and fusion were assessed; comparison between pr...
In this review, the state of the art on the removal of malachite green dye from aqueous solution ... more In this review, the state of the art on the removal of malachite green dye from aqueous solution using adsorption technique is presented. The objective is to critically analyze different adsorbents available for malachite green dye removal. Hence, the available recent literature in the area is categorized according to the cost, feasibility, and availability of adsorbents. An extensive survey of the adsorbents, derived from various sources such as low cost biological materials, waste material from industry, agricultural waste, polymers, clays, nanomaterials, and magnetic materials, has been carried out. The review studies on different adsorption factors, such as pH, concentration, adsorbent dose, and temperature. The fitting of the adsorption data to various models, isotherms, and kinetic regimes is also reported.
Symbolic manipulation uncovers hidden constraints for a model and facilitates model reduction for... more Symbolic manipulation uncovers hidden constraints for a model and facilitates model reduction for solution. The present work points out possible pitfalls of this procedure and finds possible solutions. The performances of different reduced forms of a condenser model are compared under step and impulse perturbations. The system does not need to be at steady state before perturbation. Some symbolically manipulated models cause inconsistent reinitialization and convergence and introduce significant computational errors. Physically unreasonable system behavior thus emerges, which worsens with increasing model complexity. Nevertheless, the less symbolically manipulated models present realistic and accurate behaviors. Another approach to model reduction is the reformulation of a model through a physical insight. A physically reformulated model proposed for the system leads to accurate and physically reasonable system behavior.
Http Dx Doi Org 10 1080 07373937 2014 880714, Jan 3, 2014
Concentrations of solvent and polymer have been measured using confocal Raman spectroscopy in pol... more Concentrations of solvent and polymer have been measured using confocal Raman spectroscopy in poly(styrene)-tetrahydrofuran, poly(methyl methacrylate)-tetrahydrofuran, and poly(styrene)-pxylene systems. Free volume theory parameters have been regressed from the measured concentration data. Model-predicted concentration profiles are in very good agreement with the measured profiles in the case of a highly volatile solvent. For instance, freevolume-model-predicted profiles are in very good agreement in poly (styrene)-tetrahydrofuran system and poly(methyl methacrylate) -tetrahydrofuran system. However, the free volume model is not able to predict entire measured profiles in the case of less-volatile solvent in poly(styrene)-p-xylene system.
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Papers by Raj Kumar Arya