Aman Shukla - Academia.edu (original) (raw)

Papers by Aman Shukla

IOS Press eBooks, Nov 9, 2022

Additive Manufacturing (AM) is an advanced manufacturing process which reduces the physical invol... more Additive Manufacturing (AM) is an advanced manufacturing process which reduces the physical involvement of human beings for producing products. All we required is to make a three-dimensional CAD module and feed it to a threedimensional printer. During its beginning it was just used to make a prototype, as more research has been taking place to improve its ability to make a good product due to which now it is able to produce the final product. Whenever we think about producing a product using additive manufacturing it is necessary to wisely choose the right material, right AM technique and their process parameters which fulfill the requirements. In this paper we are reviewing the process parameters of the most popularly used AM technique that is Fused Deposition Modeling (FDM) and their effect on tensile and wear strength of the printed specimen. For our study we are majorly focused on PLA and Carbon PLA as PLA is mostly use and environment friendly.

Zenodo (CERN European Organization for Nuclear Research), Sep 30, 2022

In order to increase bioavailability, stability, and target the drug to a specific region at a pr... more In order to increase bioavailability, stability, and target the drug to a specific region at a predetermined rate, floating microspheres, multi-unit drug delivery systems, are designed to accomplish controlled or delayed drug administration. In clinical practise, drugs that have an upper small intestine absorption window may benefit the most from a controlled drug delivery system with an extended stomach residence period. The non-uniformity of medication absorption throughout the gastrointestinal tract and the heterogeneity of gastrointestinal (GI) transit time across and among subjects are the two key issues. The most common drug delivery systems in these applications are floating or hydrodynamically controlled. Gastro retentive medication delivery is a method of extending the length of gastric residency because it targets site-specific drug release for local or systemic effects in the upper gastrointestinal tract (GIT). Due to the uniform distribution of these multiple-unit dose forms in the stomach, which encourages more repeatable medicine absorption and a lower risk of local discomfort, floating microspheres are becoming more and more popular. Compared to single-unit dosing variants, these systems offer more benefits. The physiology of stomach emptying is briefly examined in the context of floating drug delivery systems in this paper. This review's objective is to compile the most recent research on preparation techniques and other factors that affect the functionality and characterization of floating microspheres.

Lecture notes in mechanical engineering, Oct 4, 2022

Advance pharmaceutical journal, 2021

The goal of this study was to examine current research on nanotechnology-based medication deliver... more The goal of this study was to examine current research on nanotechnology-based medication delivery. Pharmaceutical nanocarriers currently in use, such as microspheres, dendrimers, nanoparticles, micelles, polymeric nanoparticles, and others, have a wide range of useful properties, including longevity in the blood, which allows for accumulation in pathological areas with reduced vasculature; specific targeting to specific disease sites; improved intracellular penetration of nonmaterial with contrast properties, which allows for direct visualisation. Some pharmacological carriers have already entered clinical trials, while others are still in the early stages of research. Furthermore, the development of multifunctional nanocarriers with desirable qualities might greatly improve the efficacy of a variety of therapeutic and diagnostic techniques. These cutting-edge materials function at the nanoscale level and provide new and powerful imaging, diagnostic, and treatment techniques. Data from research papers published in journals, data from different publications, and other internet accessible material were used to compile various reports. A list of several medication delivery methods through NP is offered, along with its benefits and drawbacks. Nanotechnology is a breakthrough invention that has a broad range of applications in disciplines such as medicine, communications, diagnostics, and electronics.

In the current trends globally, the excessive utilization of the energy and overconsumption of fu... more In the current trends globally, the excessive utilization of the energy and overconsumption of fuel has resulted in the global warming and environmental pollution. The Absorption cooling offers the possibility of using heat to provide cooling. For cooling purpose the required heat input is obtained from the excessive heat of the boiler or from non conventional power sources like solar energy. NH3-H2O system ammonia used as a refrigerant and water is used as an absorbent, these two liquids served as standard and a refrigerant cycle is produced. The system VARS in environment friendly and does not deplete the atmosphere. Thus it is essential to create awareness in the world for this system for it is an alternative system which is more environmental friendly. The objective of this paper is to present empirical relations for evaluating of the performance of a single stage vapor absorption system.

Reference Module in Materials Science and Materials Engineering, 2019

Encyclopedia of Smart Materials, 2022

Abstract In this review, an exploration of the current understanding of dynamic recrystallization... more Abstract In this review, an exploration of the current understanding of dynamic recrystallization (DRX) behavior of Magnesium (Mg) and its alloys has been carried out. The effect of temperature on the recrystallization mechanism is discussed in detail. An important key focus is the issue of anisotropy in stacking fault energy (SFE) in pure Mg and its effect on DRX mechanism. The dislocation slip activities on the low SFE basal plane was responsible for discontinuous dynamic recrystallization (DDRX). Whereas, the dislocation slip activities on the high SFE prismatic/pyramidal planes could led to continuous dynamic recovery and recrystallization (CDRR). It was realized that DDRX leads to the formation of new DRX grains having texture, uncorrelated with the parent-deformed grain. Whereas during CDRR, a rotation of 30° could be observed about {0002} axis from the parent deformed grains. This shift in the crystallographic orientation during DRX is controlled by plastic power. The texture of the DRX grains shifts to φ 2 = 30° position corresponding to the minimum plastic energy in the Euler space. Finally, the process of microstructural evolution and development of necklace structure during CDRR of a single-phase mg alloy AM30 could be elucidated.

Materialia, 2020

This is a PDF file of an article that has undergone enhancements after acceptance, such as the ad... more This is a PDF file of an article that has undergone enhancements after acceptance, such as the addition of a cover page and metadata, and formatting for readability, but it is not yet the definitive version of record. This version will undergo additional copyediting, typesetting and review before it is published in its final form, but we are providing this version to give early visibility of the article. Please note that, during the production process, errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.

Journal of atrial fibrillation

Background: Atrial Fibrillation (AF) is a common postoperative complication after coronary artery... more Background: Atrial Fibrillation (AF) is a common postoperative complication after coronary artery bypass grafting. There is contradictory evidence as to whether pre-operative statin use lowers the incidence of postoperative AF. This study aimed to assess whether pre operative statin therapy prevents the post-operative AF. Methods: In this retrospective cohort study we used a propensity score-matching analysis to evaluate the effect of preoperative treatment with statins on postoperative atrial fibrillation. There were 427 matched pairs of patients. Primary outcome was the incidence of postoperative AF. Secondary outcomes were 30 day mortality, stroke, myocardial infarction and length of hospital stay. Results: The incidence of postoperative AF was not different in the statin users compared with the nonusers (123, 28.1%, versus 127, 29.7%, respectively; p = 0.764). The 30 day mortality (6, 1.4%, versus 8, 1.9%; p = 0.590), stroke (10, 2.3%, versus 8, 1.9%; p = 0.634), myocardial infa...

Mineralogical Magazine, 2008

Thin sections of shells from different species of mollusc have been analysed by X-ray synchrotron... more Thin sections of shells from different species of mollusc have been analysed by X-ray synchrotron diffraction using the BM16 at the European Synchrotron Radiation Facility (ESRF), Grenoble, France. A sequence of 2-D X-ray diffraction patterns were acquired in transmission mode at regular intervals across the shell thickness. From the 2D patterns, 2θ- and χ-scans were calculatedan d analysed. We studied the evolution of the shell microstructures by analysing several parameters from calculated scans: (1) the intensity of the most intense aragonite reflections in the calculated 2θ scans; (2) the crystallinity calculated from the full width at half maximum values of the main reflections in those scans; and (3) the degree of orientation of crystals, measured from the angular width (in angle) of the arches displayed in the Debye-Scherrer rings which appeared in the 2D diffraction patterns. The determined parameters displayed sharp changes at the transitions between microstructurally disti...

2019 International Conference on Sensing, Diagnostics, Prognostics, and Control (SDPC)

Reliable induction motor (IM) fault detection techniques are very useful in industries to diagnos... more Reliable induction motor (IM) fault detection techniques are very useful in industries to diagnose IM defects and improve operational performance. A smart sensor-based empirical mode decomposition (EMD) technology is proposed in this paper for rotor bar fault detection in IMs. A smart current sensor system is developed for wireless data acquisition, allowing for low-cost, low space footprint, and non-invasive installation. The characteristic fault frequency will change with the variation of load/speed/fault severity. The basis of this EMD technique is lying on the correlation of fault features over different frequency bands and intrinsic mode functions, especially under light load conditions. The effectiveness of the proposed EMD technique is verified by experimental tests.