The present work was aimed at the development of copper-(I)-bisoxazoline catalyzed cyclopropanati... more The present work was aimed at the development of copper-(I)-bisoxazoline catalyzed cyclopropanation of furans as a key step towards the stereoselective synthesis of a cis-fused furo[2,3-b]furan intermediates which can be broadly applied for the synthesis of spongiane diterpenoids such as norrisolide. Norrisolide was isolated in 1983 by Faulkner, Clardy and coworkers in a study of the chemical defense system of nudibranch molluscs and has also been reported to vesiculate the Golgi apparatus irreversibly. However, the detailed synthetic as well as biological studies of such spongiane diterpenoids is rather unexplored. Asymmetric cyclopropanation of the 3-methyl-2-furoic ester was developed with excellent regio-, diastereo- and enantioselectivity. Conversion of the resulting 1,2-cyclopropanecarboxylated dihydrofuran to the corresponding allylic bromide allowed to enhance the enantiomeric excess to >99% ee. Moreover, the allylic bromide, being a versatile functionality could be furth...
International Journal of Computer Applications, 2020
Electrical power network that covers almost all over the places in the world. Electrical power ne... more Electrical power network that covers almost all over the places in the world. Electrical power network can be utilized as a communication medium; it is possible due to its widely spread network and connectivity. The trending technology of communicating over the power line network is known to everyone since 19th century. The main aim of this project to propose low cost system hardware for controlling and monitoring boiler system at the power generation plant using power line carrier communication (PLCC) technology. The proposed system allows them to full control on the power generation plant with less effort. PLCC technology that enables sending and receiving data over AC power line. New modulation technologies are widely used ins power line technology. Due to the ease of installation, inexpensive, high speed communication medium, availability of AC cables, low cost, high reliability and security the PLCC is widely preferred over the wireless communication or other short distance communication technologies. PLCC technology is better than GSM technology due to ease of installation, availability of network, low cost of installation, high reliability.
Our project entitled Automation for Management System is given by our college to develop. It is t... more Our project entitled Automation for Management System is given by our college to develop. It is total end to end solution for all engineering colleges for maintaining the records of students & staff in their institute. In effect, we maintain an updated database of all details like all branches, all subjects, all students information, subject wise attendance conducted examination such as internal, practical etc. Also it will maintain all the database of staff and their work load. Its purpose is to automate and centralise whole system of department. We are attempting to improve our existing system that runs on pen and paper. It is basically we design this for reduction of workload of all our staff and head of the department who act as a central user or administrator of this project. We try to offer a range of facilities in a software that will maintain the all student records and staff details in a much more efficient way with much less hassle.
Abstract Cellulose is most abundant biopolymer on earth and can be utilized as sustainable resour... more Abstract Cellulose is most abundant biopolymer on earth and can be utilized as sustainable resources for many applications, however, their utilization at great extent is limited due to lack of benign and recyclable solvent. While N-methylmorpholine-N-oxide (NMMO), used in Lyocell process, is thermally unstable and may undergoes runaway conditions, commercialization of ionic liquid as solvent still suffers from recyclability issues. Herein, we present the synthesis of a series of zwitterions, composed of tethered alkyl imidazolium cation and carboxylate anion, and investigate their cellulose dissolution characteristics. Effect of alkyl chain length of imidazolium ring on its dissolution efficiencies was studied and amongst synthesized zwitterions, the hexanoate derivatives exhibited 13% (w/w) cellulose dissolution at 100-125 °C. Thermal stability of zwitterions and their cellulose solution was characterized by DSC-TGA and found to be more stable than the NMMO and Lyocell solution. Rheological studies indicate that cellulose solution in zwitterions are viscoelastic and in spinnable range of fibre processing. Structural and morphological characterization of regenerated cellulose using elemental analysis, FTIR, DSC-TGA, GPC, XRD and SEM showed that zwitterions have no adverse effect on its physicochemical and morphological properties. A method for recovery and purification of solvent after cellulose dissolution and regenerations is also presented.
The selection of a drag model is of critical importance for fluidized bed simulations. In this st... more The selection of a drag model is of critical importance for fluidized bed simulations. In this study, the 30 effect of different drag models was investigated by conducting Computational Fluid Dynamics and 31 Discrete Element Method (CFD-DEM) simulations of bubbling fluidized beds and comparing the results 32 with two sets of experimental data. For the data reported by Goldschmidt et al. (2004), the Di Felice 33 model resulted in average particle height with less than 16% discrepancy, while the other drag models 34 resulted in significantly lower values with discrepancies between 11 and 45%. For the NETL data 35 (Gopalan et al., 2016), all the drag models showed reasonable qualitative agreement for the radial profiles 36 of the solid velocities; however, no single model resulted in close quantitative predictions. None of the 37 models were found to be suitable for both data sets. The analysis suggests that the Ayeni model and 38 Di Felice model provide better predictions than the conventionally used Gidaspow model and 39 Syamlal-O'Brien model. 40
The extensive acquisition of hybrid reinforced metal matrix composites (M M Cs) for vast engineer... more The extensive acquisition of hybrid reinforced metal matrix composites (M M Cs) for vast engineering applications is the need of this era. In this Industrial revolution, almost all sectors are demanding for the lightweight and affordable materials of constructions. These guidelines are rightfully observed in the case of hybrid reinforced aluminium metal matrix composite. In present work, the coconut shell ash and groundnut shell ash used as reinforcement in the fabrication of A356 matrix based composite material. Stir casting method has used for manufacturing hybrid composite material. Present investigate the effect of different percentage of hybrid ash particles on the microstructure and hardness of this A356 alloy matrix composite. The hardness of the synthesized material increases with addition of hybrid composition of groundnut shell ash up to 3% and coconut shell ash up to 1% by weight. The microstructure reveals that there is uniform distribution of reinforcement particles in discovered aluminum silicon eutectic with random orientation of secondary phase.
Industrial & Engineering Chemistry Research, 2018
Highlights 1. Bubbling fluidized bed experiments were conducted using ECVT. 2. A method to calcul... more Highlights 1. Bubbling fluidized bed experiments were conducted using ECVT. 2. A method to calculate the optimum threshold to post-process each 2D frame was developed. 3. Size, velocity, and frequency of bubbles were estimated and analyzed.
Easy synthesis of graphene based composite photocatalyst with the incorporation of minimal quanti... more Easy synthesis of graphene based composite photocatalyst with the incorporation of minimal quantity of noble metals for the enhanced photocatalytic hydrogen evolution as well as photocatalytic degradation and mineralization of recalcitrant pollutants under solar irradiation is an urgent requirement from the clean energy and environment point of view all over the globe. Herein, we demonstrate the decoration of Pt by photodeposition method on the hydrothermally synthesized RGO-TiO 2 nanocomposite. The various photocatalysts synthesized were successfully characterized by XRD, FTIR, Raman, UVevisible absorption spectra, XPS, SEM and TEM techniques. The well characterized photocatalysts were further investigated for the photocatalytic hydrogen evolution studies of methanol water mixtures under UV as well as simulated solar light irradiation. The optimized Pt-RGO-TiO 2 (1 wt % Pt and 10 wt % RGO) composite was found to show 14 fold increase in the photocatalytic hydrogen evolution efficiency under UV light irradiation and 20 fold increase under simulated solar light irradiation as compared to bare TiO 2 under UV light irradiation. The ternary photocatalyst showed very good recycle and reuse capability up to 4 cycles. The optimized Pt-RGO-TiO 2 was further tested for the enhanced photocatalytic degradation and mineralization of pharmaceutical pollutant namely b blocker Propranolol under UV as well as simulated solar light irradiation. The obtained results showed 79% and 94% reduction in COD of Propranolol under UV and simulated solar light irradiation respectively. The appreciable enhancement in the photocatalytic activity of the Pt decorated RGO-TiO 2 photocatalyst as compared to bare TiO 2 under UV and simulated solar light can be attributed to the use of maximum range of solar spectrum along with their excellent properties of charge separation by RGO and Pt.
The aim of project is to reduce the problem of traffic congestion which is becoming a very severe... more The aim of project is to reduce the problem of traffic congestion which is becoming a very severe problem now a days. The present traffic light system consist of a per defined Hardware which has a fixed time for green light and red light .To optimize this problem made a framework for an intelligent traffic control system. Generally the conventional traffic light system is not depends upon the density of the traffic. So the purpose of a scheme in which the time period of green light and red light is assigned on the basis of the density of the traffic present at that time. This can be done by using IR sensors. Once the density is calculated, the glowing time of green light is assigned by the help of the microcontroller. The sensors which are present on either sides of the road detect the presence of the vehicles and sends the information to the microcontroller. On the basis of those information, micro-controller will decide the glowing time of green light and red light. It means that the timing of the traffic lights is set according to the density of the vehicles. This is going to be very helpful to minimize the traffic congestion and it has a scope in future.
Abstract A simple, rapid and energy efficient process has been developed for the synthesis of ChC... more Abstract A simple, rapid and energy efficient process has been developed for the synthesis of ChCl–Urea based Deep Eutectic Solvents (DES) using concentrated solar radiations (CSR). The DES thus synthesized has been successfully used for the synthesis of N -Phenyl phthalimide from aniline and phthalic anhydride under CSR. The use of CSR greatly influenced on reaction rate as reaction proceeded in fifteen minutes. The product formed by CSR method were evaluated using TGA, XRD, and microscopic study and were found to be comparable with that obtained by conventional heating method. The present protocol covers various principles of green chemistry as it utilizes greener and clean source of energy, time saving and energy efficient process (almost 91% of energy can be saved).
A process model has been developed to study the pyrolysis of biomass to produce biofuel with heat... more A process model has been developed to study the pyrolysis of biomass to produce biofuel with heat and power generation. The gaseous and solid products were used to generate heat and electrical power, whereas the bio-oil was stored and supplied for other applications. The overall efficiency of the base case model was estimated for conversion of biomass into useable forms of bio-energy. It was found that the proposed design is not only significantly efficient but also potentially suitable for distributed operation of pyrolysis plants having centralised post processing facilities for production of other biofuels and chemicals. It was further determined that the bio-oil quality improved using a multi-stage condensation system. However, the recycling of flue gases coming from combustor instead of non-condensable gases in the pyrolyzer led to increase in the overall efficiency of the process with degradation of bio-oil quality.
International Journal of Computer Applications, 2015
Cloud Computing is a utility computing such asPay-as-you-go computing, Illusion of Infinite Resou... more Cloud Computing is a utility computing such asPay-as-you-go computing, Illusion of Infinite Resources, No UpfrontCost, Fine grained billing. User's store their large amountof data on a cloud severs at remote place without worryingabout Storage Correctness as well as information Integrity. Sothat users can option to a Third Party Auditor (TPA) to testthe data integrity and be worry-free because user does not physical present at all time. The Third Party Auditor(TPA) performs audits for multiple cloud users simultaneouslyand efficiently.In this paper, proposed scheme contain data files dividedinto small block technique. which ensure cloud storage security, integrity. To increase the user level security we proposed One Time Password (OTP) at the time of file uploading. Partitioning process implemented at TPA side. TPA performs operation like data files divided into small part of block, take hash of each block, each block Encrypt using cryptographic algorithm.
An environmentally benign, clean, solvent free approach for the benzylic bromination have been de... more An environmentally benign, clean, solvent free approach for the benzylic bromination have been developed using concentrated solar radiation (CSR). CSR methodology was used as an energy source to the reaction media. The protocol was found to be superior to the conventional photochemical and thermal methods in terms of reaction time and total energy requirement. This method was adapted with concentrated solar radiations in solvent free conditions without the use of radical initiators and has proved to provide good yields. Incorporation of renewable energy source, minimisation of raw materials makes the process not only green but energy efficient also.
The present work was aimed at the development of copper-(I)-bisoxazoline catalyzed cyclopropanati... more The present work was aimed at the development of copper-(I)-bisoxazoline catalyzed cyclopropanation of furans as a key step towards the stereoselective synthesis of a cis-fused furo[2,3-b]furan intermediates which can be broadly applied for the synthesis of spongiane diterpenoids such as norrisolide. Norrisolide was isolated in 1983 by Faulkner, Clardy and coworkers in a study of the chemical defense system of nudibranch molluscs and has also been reported to vesiculate the Golgi apparatus irreversibly. However, the detailed synthetic as well as biological studies of such spongiane diterpenoids is rather unexplored. Asymmetric cyclopropanation of the 3-methyl-2-furoic ester was developed with excellent regio-, diastereo- and enantioselectivity. Conversion of the resulting 1,2-cyclopropanecarboxylated dihydrofuran to the corresponding allylic bromide allowed to enhance the enantiomeric excess to >99% ee. Moreover, the allylic bromide, being a versatile functionality could be furth...
International Journal of Computer Applications, 2020
Electrical power network that covers almost all over the places in the world. Electrical power ne... more Electrical power network that covers almost all over the places in the world. Electrical power network can be utilized as a communication medium; it is possible due to its widely spread network and connectivity. The trending technology of communicating over the power line network is known to everyone since 19th century. The main aim of this project to propose low cost system hardware for controlling and monitoring boiler system at the power generation plant using power line carrier communication (PLCC) technology. The proposed system allows them to full control on the power generation plant with less effort. PLCC technology that enables sending and receiving data over AC power line. New modulation technologies are widely used ins power line technology. Due to the ease of installation, inexpensive, high speed communication medium, availability of AC cables, low cost, high reliability and security the PLCC is widely preferred over the wireless communication or other short distance communication technologies. PLCC technology is better than GSM technology due to ease of installation, availability of network, low cost of installation, high reliability.
Our project entitled Automation for Management System is given by our college to develop. It is t... more Our project entitled Automation for Management System is given by our college to develop. It is total end to end solution for all engineering colleges for maintaining the records of students & staff in their institute. In effect, we maintain an updated database of all details like all branches, all subjects, all students information, subject wise attendance conducted examination such as internal, practical etc. Also it will maintain all the database of staff and their work load. Its purpose is to automate and centralise whole system of department. We are attempting to improve our existing system that runs on pen and paper. It is basically we design this for reduction of workload of all our staff and head of the department who act as a central user or administrator of this project. We try to offer a range of facilities in a software that will maintain the all student records and staff details in a much more efficient way with much less hassle.
Abstract Cellulose is most abundant biopolymer on earth and can be utilized as sustainable resour... more Abstract Cellulose is most abundant biopolymer on earth and can be utilized as sustainable resources for many applications, however, their utilization at great extent is limited due to lack of benign and recyclable solvent. While N-methylmorpholine-N-oxide (NMMO), used in Lyocell process, is thermally unstable and may undergoes runaway conditions, commercialization of ionic liquid as solvent still suffers from recyclability issues. Herein, we present the synthesis of a series of zwitterions, composed of tethered alkyl imidazolium cation and carboxylate anion, and investigate their cellulose dissolution characteristics. Effect of alkyl chain length of imidazolium ring on its dissolution efficiencies was studied and amongst synthesized zwitterions, the hexanoate derivatives exhibited 13% (w/w) cellulose dissolution at 100-125 °C. Thermal stability of zwitterions and their cellulose solution was characterized by DSC-TGA and found to be more stable than the NMMO and Lyocell solution. Rheological studies indicate that cellulose solution in zwitterions are viscoelastic and in spinnable range of fibre processing. Structural and morphological characterization of regenerated cellulose using elemental analysis, FTIR, DSC-TGA, GPC, XRD and SEM showed that zwitterions have no adverse effect on its physicochemical and morphological properties. A method for recovery and purification of solvent after cellulose dissolution and regenerations is also presented.
The selection of a drag model is of critical importance for fluidized bed simulations. In this st... more The selection of a drag model is of critical importance for fluidized bed simulations. In this study, the 30 effect of different drag models was investigated by conducting Computational Fluid Dynamics and 31 Discrete Element Method (CFD-DEM) simulations of bubbling fluidized beds and comparing the results 32 with two sets of experimental data. For the data reported by Goldschmidt et al. (2004), the Di Felice 33 model resulted in average particle height with less than 16% discrepancy, while the other drag models 34 resulted in significantly lower values with discrepancies between 11 and 45%. For the NETL data 35 (Gopalan et al., 2016), all the drag models showed reasonable qualitative agreement for the radial profiles 36 of the solid velocities; however, no single model resulted in close quantitative predictions. None of the 37 models were found to be suitable for both data sets. The analysis suggests that the Ayeni model and 38 Di Felice model provide better predictions than the conventionally used Gidaspow model and 39 Syamlal-O'Brien model. 40
The extensive acquisition of hybrid reinforced metal matrix composites (M M Cs) for vast engineer... more The extensive acquisition of hybrid reinforced metal matrix composites (M M Cs) for vast engineering applications is the need of this era. In this Industrial revolution, almost all sectors are demanding for the lightweight and affordable materials of constructions. These guidelines are rightfully observed in the case of hybrid reinforced aluminium metal matrix composite. In present work, the coconut shell ash and groundnut shell ash used as reinforcement in the fabrication of A356 matrix based composite material. Stir casting method has used for manufacturing hybrid composite material. Present investigate the effect of different percentage of hybrid ash particles on the microstructure and hardness of this A356 alloy matrix composite. The hardness of the synthesized material increases with addition of hybrid composition of groundnut shell ash up to 3% and coconut shell ash up to 1% by weight. The microstructure reveals that there is uniform distribution of reinforcement particles in discovered aluminum silicon eutectic with random orientation of secondary phase.
Industrial & Engineering Chemistry Research, 2018
Highlights 1. Bubbling fluidized bed experiments were conducted using ECVT. 2. A method to calcul... more Highlights 1. Bubbling fluidized bed experiments were conducted using ECVT. 2. A method to calculate the optimum threshold to post-process each 2D frame was developed. 3. Size, velocity, and frequency of bubbles were estimated and analyzed.
Easy synthesis of graphene based composite photocatalyst with the incorporation of minimal quanti... more Easy synthesis of graphene based composite photocatalyst with the incorporation of minimal quantity of noble metals for the enhanced photocatalytic hydrogen evolution as well as photocatalytic degradation and mineralization of recalcitrant pollutants under solar irradiation is an urgent requirement from the clean energy and environment point of view all over the globe. Herein, we demonstrate the decoration of Pt by photodeposition method on the hydrothermally synthesized RGO-TiO 2 nanocomposite. The various photocatalysts synthesized were successfully characterized by XRD, FTIR, Raman, UVevisible absorption spectra, XPS, SEM and TEM techniques. The well characterized photocatalysts were further investigated for the photocatalytic hydrogen evolution studies of methanol water mixtures under UV as well as simulated solar light irradiation. The optimized Pt-RGO-TiO 2 (1 wt % Pt and 10 wt % RGO) composite was found to show 14 fold increase in the photocatalytic hydrogen evolution efficiency under UV light irradiation and 20 fold increase under simulated solar light irradiation as compared to bare TiO 2 under UV light irradiation. The ternary photocatalyst showed very good recycle and reuse capability up to 4 cycles. The optimized Pt-RGO-TiO 2 was further tested for the enhanced photocatalytic degradation and mineralization of pharmaceutical pollutant namely b blocker Propranolol under UV as well as simulated solar light irradiation. The obtained results showed 79% and 94% reduction in COD of Propranolol under UV and simulated solar light irradiation respectively. The appreciable enhancement in the photocatalytic activity of the Pt decorated RGO-TiO 2 photocatalyst as compared to bare TiO 2 under UV and simulated solar light can be attributed to the use of maximum range of solar spectrum along with their excellent properties of charge separation by RGO and Pt.
The aim of project is to reduce the problem of traffic congestion which is becoming a very severe... more The aim of project is to reduce the problem of traffic congestion which is becoming a very severe problem now a days. The present traffic light system consist of a per defined Hardware which has a fixed time for green light and red light .To optimize this problem made a framework for an intelligent traffic control system. Generally the conventional traffic light system is not depends upon the density of the traffic. So the purpose of a scheme in which the time period of green light and red light is assigned on the basis of the density of the traffic present at that time. This can be done by using IR sensors. Once the density is calculated, the glowing time of green light is assigned by the help of the microcontroller. The sensors which are present on either sides of the road detect the presence of the vehicles and sends the information to the microcontroller. On the basis of those information, micro-controller will decide the glowing time of green light and red light. It means that the timing of the traffic lights is set according to the density of the vehicles. This is going to be very helpful to minimize the traffic congestion and it has a scope in future.
Abstract A simple, rapid and energy efficient process has been developed for the synthesis of ChC... more Abstract A simple, rapid and energy efficient process has been developed for the synthesis of ChCl–Urea based Deep Eutectic Solvents (DES) using concentrated solar radiations (CSR). The DES thus synthesized has been successfully used for the synthesis of N -Phenyl phthalimide from aniline and phthalic anhydride under CSR. The use of CSR greatly influenced on reaction rate as reaction proceeded in fifteen minutes. The product formed by CSR method were evaluated using TGA, XRD, and microscopic study and were found to be comparable with that obtained by conventional heating method. The present protocol covers various principles of green chemistry as it utilizes greener and clean source of energy, time saving and energy efficient process (almost 91% of energy can be saved).
A process model has been developed to study the pyrolysis of biomass to produce biofuel with heat... more A process model has been developed to study the pyrolysis of biomass to produce biofuel with heat and power generation. The gaseous and solid products were used to generate heat and electrical power, whereas the bio-oil was stored and supplied for other applications. The overall efficiency of the base case model was estimated for conversion of biomass into useable forms of bio-energy. It was found that the proposed design is not only significantly efficient but also potentially suitable for distributed operation of pyrolysis plants having centralised post processing facilities for production of other biofuels and chemicals. It was further determined that the bio-oil quality improved using a multi-stage condensation system. However, the recycling of flue gases coming from combustor instead of non-condensable gases in the pyrolyzer led to increase in the overall efficiency of the process with degradation of bio-oil quality.
International Journal of Computer Applications, 2015
Cloud Computing is a utility computing such asPay-as-you-go computing, Illusion of Infinite Resou... more Cloud Computing is a utility computing such asPay-as-you-go computing, Illusion of Infinite Resources, No UpfrontCost, Fine grained billing. User's store their large amountof data on a cloud severs at remote place without worryingabout Storage Correctness as well as information Integrity. Sothat users can option to a Third Party Auditor (TPA) to testthe data integrity and be worry-free because user does not physical present at all time. The Third Party Auditor(TPA) performs audits for multiple cloud users simultaneouslyand efficiently.In this paper, proposed scheme contain data files dividedinto small block technique. which ensure cloud storage security, integrity. To increase the user level security we proposed One Time Password (OTP) at the time of file uploading. Partitioning process implemented at TPA side. TPA performs operation like data files divided into small part of block, take hash of each block, each block Encrypt using cryptographic algorithm.
An environmentally benign, clean, solvent free approach for the benzylic bromination have been de... more An environmentally benign, clean, solvent free approach for the benzylic bromination have been developed using concentrated solar radiation (CSR). CSR methodology was used as an energy source to the reaction media. The protocol was found to be superior to the conventional photochemical and thermal methods in terms of reaction time and total energy requirement. This method was adapted with concentrated solar radiations in solvent free conditions without the use of radical initiators and has proved to provide good yields. Incorporation of renewable energy source, minimisation of raw materials makes the process not only green but energy efficient also.
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Papers by Yogesh Shinde