Invasive insect pests are one of the greatest and fastest-growing threats to natural resources li... more Invasive insect pests are one of the greatest and fastest-growing threats to natural resources like agricultural biodiversity, animal sector and social progresses are profusely hampered through insect infestation. Through this present study, it was first recorded that Yponomeuta padella attack Prunus cornuta (Himalayan Bird Cherry) leaves in high altitudinal transition zone forests of North Western Himalaya in India. The first damage was observed duringthe month of July, 2022 and randomly collected egg masses form the infested leaves of Prunus cornuta. This species identified through its morphological and genital characteristics. A complete biology of ermine moth, morphology and genital characteristics were studied to update the taxonomic details of the species. More than 90% infestation in leaves was recorded in some trees in the study area. As an alternative, an integrated pest management system needs to be developed for better insect's sustainable management.
Natural ®bres (sisal) were treated with various coupling agents such as organosilane, zirconate, ... more Natural ®bres (sisal) were treated with various coupling agents such as organosilane, zirconate, titanate and N-substituted methacrylamide. The nature of the adsorbed chemical species on the ®bre surfaces was analysed by Fourier transform infrared microscopy (FT-IR). The presence of precipitated oligomers on the surface was con®rmed by the appearance of hydrogen-bonded carbonyl group and unsaturation bands. The results showed an irregular physisorption/chemisorption of coupling agents, their penetration beyond the surface, and a decrease in the hydrophilicity of ®bres. SEM and dynamic contact angle studies on the ®bres supported these ®ndings. FT-IR microscopy in its re¯ectance mode was more effective in ascertaining the chemical nature and structure of adsorbed layers onto sisal ®bre surfaces compared with DRIFT and transmission spectroscopy. The difference in the properties of untreated and chemically treated ®bres has also been veri®ed in the polymer composites.
The physical and mechanical properties of jute composites have been studied under various humidit... more The physical and mechanical properties of jute composites have been studied under various humidity, hydrothermal and weathering conditions. The aging-induced deteriorative effect of these conditions on the dimensional stability, surface topography and mechanical ...
International journal of life science and pharma research, Oct 21, 2022
The nanoparticle (NP) biosynthesis field is still underdeveloped and has long been known to impac... more The nanoparticle (NP) biosynthesis field is still underdeveloped and has long been known to impact many industries significantly. Recently, the synthesis of silver NPs has been given excessive attention in developed countries because of the requirement to develop environmental supporter technologies to synthesize materials. The uses of green chemicals are environmentally friendly, non-poisonous, and inexpensive. It has been shown that various microbes, including yeast, fungi, bacteria, and plants, can synthesize intracellular and extracellular AgNPs. All systematic information reflects the unique possessions of AgNPs, which have many uses such as antifungal, antibacterial, anticancer, and antiviral agents, brilliant natural catalytic larvae, dyedegrading, excellent antioxidants, treatment of complications associated with diabetes, and wound curative. Physical and chemical methods use high radiation levels and high concentrations of reducing agents and stabilizers that are dangerous to the environment and human health. Therefore, the synthesis of NPs is a one-step bioremediation approach and consumes low energy for an environmentally friendly synthesis of NPs. Recently, the development of effective green chemistry methods using reducing agents, limiters, and natural stabilizers to obtain AgNPs of good shape and sizes has become an area of research. This review aims to explore the green synthesis of silver nanoparticles using plant extract, and the characterization of synthesized silver nanoparticles with their different applications. Also, this review is meant to tell about the plants and their various parts that can be used for the green chemistry of silver nanoparticles in an environmentally friendly basis with their many therapeutic applications. Finally, this review summarizes the latest published data that can be used for research.
Efficacy evaluation of various coupling-agent-treated sisal fibers was made by contact angle meas... more Efficacy evaluation of various coupling-agent-treated sisal fibers was made by contact angle measurements and Fourier transform infrared spectroscopy. It was found that high contact angle and reduced hydroxyl groups on titanate-treated fibers favor its better hydrophobicity over the other treatments. The presence of adsorbed layer of coupling agent on the fiber surface was ascertained by appearance, shifting, and decreased intensity of absorption bands. The lowest polar component of surfacefree energy for N-substituted methacrylamide-treated fiber indicates the formation of ordered layers of its organofunctionality at the surface. The reason for enhanced interaction between sisal fiber and N-substituted methacrylamide is suggested by the formation of hydrogen bond, besides extracting a surface-active proton from the fiber surface by alkoxy group to form a covalent bond. An optimum treating condition of fiber for effective adsorptive interaction has been reported. The deposition of compound in the form of an aggregate on the fiber surface was also observed under scanning electron microscopy.
Composites Part A-applied Science and Manufacturing, Nov 1, 2003
Combination of natural fibres and wollastonite whiskers has been attempted as an alternative to g... more Combination of natural fibres and wollastonite whiskers has been attempted as an alternative to glass fibre reinforcement in polyester dough moulding compounds. Natural fibres (sisal) and wollastonite were surface-modified with polyester compatible neo pentyl (diallyl) oxy, tri (dioctyl) pyro-phosphato titanate and gamma-methacryloxy propyl trimethoxy silane coupling agents, respectively. Reinforcing effect of wollastonite to a level of , 50 wt% in an unsaturated polyester resin reveals a positive indication because of its favourable physicomechanical properties and microstructural features. The optimization of short sisal and glass fibres in wollastonite/polyester system was carried out to formulate a doughy compound. It was found that , 11 wt% sisal fibres in wollastonite/polyester and , 3 to 5 wt% glass fibres in sisal/wollastonite/polyester give the optimum results. The high loss area observed at a and b transitions in dynamic mechanical analyser (DMA) traces supported the elastic behaviour of sisal/wollastonite/polyester moulding compared to corresponding wollastonite/polyester system. Based on these findings, a dough composition has been formulated and its suitability was assessed vis-à-vis to glass fibre-dough moulding compounds. It is observed that polyester dough moulding compound prepared from sisal/wollastonite reinforcement gives satisfactory results.
Sisal fibres and red mud were treated with different hydrophobic chelates based on titanium and s... more Sisal fibres and red mud were treated with different hydrophobic chelates based on titanium and silicon. The effect of the addition of treated red-mud loading on the mechanical properties of polyester resin has been investigated. Composite laminates have been prepared and their physicomechanical properties were evaluated as a function of fibre length, fibre content, sisal/glass fibres and sisal/glass/red mud combinations. It was found that particulate hybrid composites had superior physico-mechanical properties than those of sisal/polyester, neat and filled unsaturated polyester resin. The suitability of particulate composites was also assessed in relation to medium-density fibreboard/high-density particleboard.
Herbal medicine is the oldest form of health care known to mankind. Herbs had been used by all cu... more Herbal medicine is the oldest form of health care known to mankind. Herbs had been used by all cultures through history. The leaves of Bauhinia variegata linn. (Leguminosae) are reported to be of great medicinal importance. In the present investigation isolation of chemical constituent was carried out from the leaves of Bauhinia variegata, an evergreen member of the family Leguminosae, using column chromatography. Identification of chemical constituents was done by various techquines viz.MP, TLC, IR, NMR & LC-MS techniques. A bioactive carbohydrate D-pinitol was isolated from the ethanolic extract. These findings are useful in establishing a relationship between chemical composition of the leaf extract and previously reported activities of Bauhinia variegata and also may assign a new potential role of Bauhinia variegata extract in human health care. The presence of the bioactive compound (+)-pinitol in this plant is being reported for the first time.
This paper presents a design of Two Stage CMOS operational amplifier, which operates at ±2.5V pow... more This paper presents a design of Two Stage CMOS operational amplifier, which operates at ±2.5V power supply using umc 2µm CMOS technology. The OP-AMP designed is a two-stage CMOS OP-AMP. The OP-AMP is designed to exhibit a unity gain frequency of 4.416MHz and exhibits a gain of 96dB with a 700 phase margin. Design and Simulation has been carried out in LT Spice tools.
In various situations, there are times when a person is unable to physically check or provide ass... more In various situations, there are times when a person is unable to physically check or provide assistance, leaving a specific action undone. However, with the use of robots, such issues can be resolved, and lives can be saved. To address this need, we have proposed the development of a surveillance robot that can stream real-time videos, transfer audio, and navigate around obstacles. Our aim is to design a system that allows us to wirelessly send commands to the robot, which it will follow accordingly.This proposed system consists of three main parts: the transmitter, receiver, and live streaming section. In the transmitter section, individuals can provide commands to the robot through various means such as gesture or motion tracking. In the receiver section, signals are received and decoded before being sent to the controller, which then directs the robot. Finally, the system is designed to allow for live video streaming to the person monitoring the robot. To achieve this, a common ...
International journal of life science and pharma research, Oct 21, 2022
The nanoparticle (NP) biosynthesis field is still underdeveloped and has long been known to impac... more The nanoparticle (NP) biosynthesis field is still underdeveloped and has long been known to impact many industries significantly. Recently, the synthesis of silver NPs has been given excessive attention in developed countries because of the requirement to develop environmental supporter technologies to synthesize materials. The uses of green chemicals are environmentally friendly, non-poisonous, and inexpensive. It has been shown that various microbes, including yeast, fungi, bacteria, and plants, can synthesize intracellular and extracellular AgNPs. All systematic information reflects the unique possessions of AgNPs, which have many uses such as antifungal, antibacterial, anticancer, and antiviral agents, brilliant natural catalytic larvae, dyedegrading, excellent antioxidants, treatment of complications associated with diabetes, and wound curative. Physical and chemical methods use high radiation levels and high concentrations of reducing agents and stabilizers that are dangerous to the environment and human health. Therefore, the synthesis of NPs is a one-step bioremediation approach and consumes low energy for an environmentally friendly synthesis of NPs. Recently, the development of effective green chemistry methods using reducing agents, limiters, and natural stabilizers to obtain AgNPs of good shape and sizes has become an area of research. This review aims to explore the green synthesis of silver nanoparticles using plant extract, and the characterization of synthesized silver nanoparticles with their different applications. Also, this review is meant to tell about the plants and their various parts that can be used for the green chemistry of silver nanoparticles in an environmentally friendly basis with their many therapeutic applications. Finally, this review summarizes the latest published data that can be used for research.
International Journal of Health Sciences (IJHS), Apr 27, 2022
Liposomes or lipid vesicles were discovered by hydration of a self-forming encapsulated lipid bil... more Liposomes or lipid vesicles were discovered by hydration of a self-forming encapsulated lipid bilayer; liposome drug delivery methods have played an important part in the development of effective pharmaceuticals to enhance treatments. Liposomes are spherical vesicles made up of one or more lipid bilayers with an aqueous compartment in the middle. Liposome is an abbreviation for "lipid body." It derives from the name of sub cellular particles known as ribosome. A.D. Bangham created the first liposomes in the early 1960s. Their dimensions range between 25 and 500nm. They are now an extremely valuable tool in a variety of scientific areas, including chemistry, colloid science, biochemistry, biology, and pharmaceutical research. Liposomes are a distinct and advanced technique for transporting active compounds to the site of action, and numerous dosage forms are already in clinical use. This study outlines the categorization, techniques of synthesis, stability, and applications of liposomal drug formulations.
ABSTRACT: The aim of the work is to formulate sustained release matrix tablets of simvastatin and... more ABSTRACT: The aim of the work is to formulate sustained release matrix tablets of simvastatin and to optimize them using Response Surface Methodology. The tablets were prepared by direct compression method and evaluated as per pharmacopoeia methodology. A central composite design for 2 factors at 3 levels each was employed to systematically optimize drug release profile. Concentration of HPMC K15M (X1) and PVP K30 (X2) were taken as the independent variables and the in vitro dissolution (Y1), t50 % (Y2) and mean dissolution time (Y3) as dependent variables. Response surface plots and contour plots were drawn, and the optimum formulations were selected by feasibility and grid searches. Both the polymers had a significant effect on drug release from the tablets. The formulations were followed Higuchi drug kinetics and diffusion was the prime mechanism of drug release. The polynomial mathematical models produce for various response variables using the regression analysis and were found...
Scopoletin, a derivative of coumarin, is a benzopyrone in nature, and present in the various plan... more Scopoletin, a derivative of coumarin, is a benzopyrone in nature, and present in the various plants. In the present study, scopoletin at a dose of 1mg/kg p.o. once a day and scopoletin at a dose of 1mg/kg p.o. at two times in a day was evaluated for the hypoglycemic and hypolipidemic activity in Wistar albino rats in streptozotocin induced diabetic rats. Glimepiride (0.11mg/kg) was used as reference standard for the activity comparison. Fasting blood glucose level and plasma lipid profiles were measured in diabetic and non diabetic rats at the end of the experiment. Scopoletin showed significant reduction in blood glucose level and lipid level in streptozotocin induced diabetic rats that is comparable to Glimepiride, with more promising decrease in glucose concentration observed in scopoletin two times a day than the scopoletin given once a day. The finding of the present investigation showed that the scopoletin at 1mg/kg dose is very helpful in diabetes and its complication. It sho...
Bipolar affective disorder tends to occur in episodes lasting 3-4 months, followed by complete cl... more Bipolar affective disorder tends to occur in episodes lasting 3-4 months, followed by complete clinical recovery. Future episode can be manic, depressive or mixed. Relapse is very common in bipolar affective disorder, level of social support reduces with the frequent relapses and expressed emotion took place in the negative form and become hurdle in readjustment of patients. 100 bipolar affective disorders with at least one hospitalization and their primary care givers were recruited from RINPAS OPD. People with more than one hospitalization get poor support from caregivers and they face high negative expressed emotion. Frequent relapse reduce the level of social support and increased the expressed emotion.
This paper presents a design of Two Stage CMOS operational amplifier, which operates at ±2.5V pow... more This paper presents a design of Two Stage CMOS operational amplifier, which operates at ±2.5V power supply using umc 2µm CMOS technology. The OP-AMP designed is a two-stage CMOS OP-AMP. The OP-AMP is designed to exhibit a unity gain frequency of 4.416MHz and exhibits a gain of 96dB with a 700 phase margin. Design and Simulation has been carried out in LT Spice tools. For this, a simple analysis with some meaningful parameters (such as gain bandwidth, phase margin, etc.) is performed. The method handles wide variety of specifications and constraints. In this, we formulate the CMOS op-amp design problem and their aspect ratios. The method we present can be applied to a wide variety of amplifier structures, but in this paper we apply the method to a specific two stage CMOS op-amp. The variation in the performance of the op-amp with variations in the width and length of the CMOS and the effect of scaling the gate oxide thickness is discussed. The simulation results have been obtained by...
Herbal medicine is the oldest form of health care known to mankind. Herbs had been used by all cu... more Herbal medicine is the oldest form of health care known to mankind. Herbs had been used by all cultures through history. The leaves of Bauhinia variegata linn. (Leguminosae) are reported to be of great medicinal importance. In the present investigation isolation of chemical constituent was carried out from the leaves of Bauhinia variegata, an evergreen member of the family Leguminosae, using column chromatography. Identification of chemical constituents was done by various techquines viz.MP, TLC, IR, NMR & LC-MS techniques. A bioactive carbohydrate D-pinitol was isolated from the ethanolic extract. These findings are useful in establishing a relationship between chemical composition of the leaf extract and previously reported activities of Bauhinia variegata and also may assign a new potential role of Bauhinia variegata extract in human health care. The presence of the bioactive compound (+)-pinitol in this plant is being reported for the first time.
In the present study attempts has been made to examine the peripheral erythrocytes in fish Cyprin... more In the present study attempts has been made to examine the peripheral erythrocytes in fish Cyprinus carpio for occurrence of micronuclei and using the information for monitoring potential genotoxicity of Azo dye AR-88 and its degradation product. Azo dye like malachite green causes cancer, mutations, chromosomal fracture and teratogenicity. It also causes sinusoidal congestion and focal necrosis in liver, damages mitochondria and brings nuclear alterations. The dye and effluent brought a significant increase in the frequency of micronuclei. The increase in frequency was directly proportional to the concentration of the dye as well as effluent. The effluents produced more deleterious effects as compared to the dye in the exposed fish with respect to change in the cell shape, clumping and focal necrosis of RBC’s. This clearly indicates that longer exposure to AR88 and its degradation products at sublethal levels will produce genotoxic effects in the fish significantly affecting their ...
Aperture Coupled Microstrip Antenna With Quasi-Planner Surface Mounted Horn ~~~2 3 A. Abdel-Rahma... more Aperture Coupled Microstrip Antenna With Quasi-Planner Surface Mounted Horn ~~~2 3 A. Abdel-Rahman , AK Verma., GS Kirov and AS Omar' 'Chair of Microwave and Communication Engineering University of Magdeburg, Magdeburg, Germany ... REFERENCE [1] RQ Lee, KF ...
Invasive insect pests are one of the greatest and fastest-growing threats to natural resources li... more Invasive insect pests are one of the greatest and fastest-growing threats to natural resources like agricultural biodiversity, animal sector and social progresses are profusely hampered through insect infestation. Through this present study, it was first recorded that Yponomeuta padella attack Prunus cornuta (Himalayan Bird Cherry) leaves in high altitudinal transition zone forests of North Western Himalaya in India. The first damage was observed duringthe month of July, 2022 and randomly collected egg masses form the infested leaves of Prunus cornuta. This species identified through its morphological and genital characteristics. A complete biology of ermine moth, morphology and genital characteristics were studied to update the taxonomic details of the species. More than 90% infestation in leaves was recorded in some trees in the study area. As an alternative, an integrated pest management system needs to be developed for better insect's sustainable management.
Natural ®bres (sisal) were treated with various coupling agents such as organosilane, zirconate, ... more Natural ®bres (sisal) were treated with various coupling agents such as organosilane, zirconate, titanate and N-substituted methacrylamide. The nature of the adsorbed chemical species on the ®bre surfaces was analysed by Fourier transform infrared microscopy (FT-IR). The presence of precipitated oligomers on the surface was con®rmed by the appearance of hydrogen-bonded carbonyl group and unsaturation bands. The results showed an irregular physisorption/chemisorption of coupling agents, their penetration beyond the surface, and a decrease in the hydrophilicity of ®bres. SEM and dynamic contact angle studies on the ®bres supported these ®ndings. FT-IR microscopy in its re¯ectance mode was more effective in ascertaining the chemical nature and structure of adsorbed layers onto sisal ®bre surfaces compared with DRIFT and transmission spectroscopy. The difference in the properties of untreated and chemically treated ®bres has also been veri®ed in the polymer composites.
The physical and mechanical properties of jute composites have been studied under various humidit... more The physical and mechanical properties of jute composites have been studied under various humidity, hydrothermal and weathering conditions. The aging-induced deteriorative effect of these conditions on the dimensional stability, surface topography and mechanical ...
International journal of life science and pharma research, Oct 21, 2022
The nanoparticle (NP) biosynthesis field is still underdeveloped and has long been known to impac... more The nanoparticle (NP) biosynthesis field is still underdeveloped and has long been known to impact many industries significantly. Recently, the synthesis of silver NPs has been given excessive attention in developed countries because of the requirement to develop environmental supporter technologies to synthesize materials. The uses of green chemicals are environmentally friendly, non-poisonous, and inexpensive. It has been shown that various microbes, including yeast, fungi, bacteria, and plants, can synthesize intracellular and extracellular AgNPs. All systematic information reflects the unique possessions of AgNPs, which have many uses such as antifungal, antibacterial, anticancer, and antiviral agents, brilliant natural catalytic larvae, dyedegrading, excellent antioxidants, treatment of complications associated with diabetes, and wound curative. Physical and chemical methods use high radiation levels and high concentrations of reducing agents and stabilizers that are dangerous to the environment and human health. Therefore, the synthesis of NPs is a one-step bioremediation approach and consumes low energy for an environmentally friendly synthesis of NPs. Recently, the development of effective green chemistry methods using reducing agents, limiters, and natural stabilizers to obtain AgNPs of good shape and sizes has become an area of research. This review aims to explore the green synthesis of silver nanoparticles using plant extract, and the characterization of synthesized silver nanoparticles with their different applications. Also, this review is meant to tell about the plants and their various parts that can be used for the green chemistry of silver nanoparticles in an environmentally friendly basis with their many therapeutic applications. Finally, this review summarizes the latest published data that can be used for research.
Efficacy evaluation of various coupling-agent-treated sisal fibers was made by contact angle meas... more Efficacy evaluation of various coupling-agent-treated sisal fibers was made by contact angle measurements and Fourier transform infrared spectroscopy. It was found that high contact angle and reduced hydroxyl groups on titanate-treated fibers favor its better hydrophobicity over the other treatments. The presence of adsorbed layer of coupling agent on the fiber surface was ascertained by appearance, shifting, and decreased intensity of absorption bands. The lowest polar component of surfacefree energy for N-substituted methacrylamide-treated fiber indicates the formation of ordered layers of its organofunctionality at the surface. The reason for enhanced interaction between sisal fiber and N-substituted methacrylamide is suggested by the formation of hydrogen bond, besides extracting a surface-active proton from the fiber surface by alkoxy group to form a covalent bond. An optimum treating condition of fiber for effective adsorptive interaction has been reported. The deposition of compound in the form of an aggregate on the fiber surface was also observed under scanning electron microscopy.
Composites Part A-applied Science and Manufacturing, Nov 1, 2003
Combination of natural fibres and wollastonite whiskers has been attempted as an alternative to g... more Combination of natural fibres and wollastonite whiskers has been attempted as an alternative to glass fibre reinforcement in polyester dough moulding compounds. Natural fibres (sisal) and wollastonite were surface-modified with polyester compatible neo pentyl (diallyl) oxy, tri (dioctyl) pyro-phosphato titanate and gamma-methacryloxy propyl trimethoxy silane coupling agents, respectively. Reinforcing effect of wollastonite to a level of , 50 wt% in an unsaturated polyester resin reveals a positive indication because of its favourable physicomechanical properties and microstructural features. The optimization of short sisal and glass fibres in wollastonite/polyester system was carried out to formulate a doughy compound. It was found that , 11 wt% sisal fibres in wollastonite/polyester and , 3 to 5 wt% glass fibres in sisal/wollastonite/polyester give the optimum results. The high loss area observed at a and b transitions in dynamic mechanical analyser (DMA) traces supported the elastic behaviour of sisal/wollastonite/polyester moulding compared to corresponding wollastonite/polyester system. Based on these findings, a dough composition has been formulated and its suitability was assessed vis-à-vis to glass fibre-dough moulding compounds. It is observed that polyester dough moulding compound prepared from sisal/wollastonite reinforcement gives satisfactory results.
Sisal fibres and red mud were treated with different hydrophobic chelates based on titanium and s... more Sisal fibres and red mud were treated with different hydrophobic chelates based on titanium and silicon. The effect of the addition of treated red-mud loading on the mechanical properties of polyester resin has been investigated. Composite laminates have been prepared and their physicomechanical properties were evaluated as a function of fibre length, fibre content, sisal/glass fibres and sisal/glass/red mud combinations. It was found that particulate hybrid composites had superior physico-mechanical properties than those of sisal/polyester, neat and filled unsaturated polyester resin. The suitability of particulate composites was also assessed in relation to medium-density fibreboard/high-density particleboard.
Herbal medicine is the oldest form of health care known to mankind. Herbs had been used by all cu... more Herbal medicine is the oldest form of health care known to mankind. Herbs had been used by all cultures through history. The leaves of Bauhinia variegata linn. (Leguminosae) are reported to be of great medicinal importance. In the present investigation isolation of chemical constituent was carried out from the leaves of Bauhinia variegata, an evergreen member of the family Leguminosae, using column chromatography. Identification of chemical constituents was done by various techquines viz.MP, TLC, IR, NMR & LC-MS techniques. A bioactive carbohydrate D-pinitol was isolated from the ethanolic extract. These findings are useful in establishing a relationship between chemical composition of the leaf extract and previously reported activities of Bauhinia variegata and also may assign a new potential role of Bauhinia variegata extract in human health care. The presence of the bioactive compound (+)-pinitol in this plant is being reported for the first time.
This paper presents a design of Two Stage CMOS operational amplifier, which operates at ±2.5V pow... more This paper presents a design of Two Stage CMOS operational amplifier, which operates at ±2.5V power supply using umc 2µm CMOS technology. The OP-AMP designed is a two-stage CMOS OP-AMP. The OP-AMP is designed to exhibit a unity gain frequency of 4.416MHz and exhibits a gain of 96dB with a 700 phase margin. Design and Simulation has been carried out in LT Spice tools.
In various situations, there are times when a person is unable to physically check or provide ass... more In various situations, there are times when a person is unable to physically check or provide assistance, leaving a specific action undone. However, with the use of robots, such issues can be resolved, and lives can be saved. To address this need, we have proposed the development of a surveillance robot that can stream real-time videos, transfer audio, and navigate around obstacles. Our aim is to design a system that allows us to wirelessly send commands to the robot, which it will follow accordingly.This proposed system consists of three main parts: the transmitter, receiver, and live streaming section. In the transmitter section, individuals can provide commands to the robot through various means such as gesture or motion tracking. In the receiver section, signals are received and decoded before being sent to the controller, which then directs the robot. Finally, the system is designed to allow for live video streaming to the person monitoring the robot. To achieve this, a common ...
International journal of life science and pharma research, Oct 21, 2022
The nanoparticle (NP) biosynthesis field is still underdeveloped and has long been known to impac... more The nanoparticle (NP) biosynthesis field is still underdeveloped and has long been known to impact many industries significantly. Recently, the synthesis of silver NPs has been given excessive attention in developed countries because of the requirement to develop environmental supporter technologies to synthesize materials. The uses of green chemicals are environmentally friendly, non-poisonous, and inexpensive. It has been shown that various microbes, including yeast, fungi, bacteria, and plants, can synthesize intracellular and extracellular AgNPs. All systematic information reflects the unique possessions of AgNPs, which have many uses such as antifungal, antibacterial, anticancer, and antiviral agents, brilliant natural catalytic larvae, dyedegrading, excellent antioxidants, treatment of complications associated with diabetes, and wound curative. Physical and chemical methods use high radiation levels and high concentrations of reducing agents and stabilizers that are dangerous to the environment and human health. Therefore, the synthesis of NPs is a one-step bioremediation approach and consumes low energy for an environmentally friendly synthesis of NPs. Recently, the development of effective green chemistry methods using reducing agents, limiters, and natural stabilizers to obtain AgNPs of good shape and sizes has become an area of research. This review aims to explore the green synthesis of silver nanoparticles using plant extract, and the characterization of synthesized silver nanoparticles with their different applications. Also, this review is meant to tell about the plants and their various parts that can be used for the green chemistry of silver nanoparticles in an environmentally friendly basis with their many therapeutic applications. Finally, this review summarizes the latest published data that can be used for research.
International Journal of Health Sciences (IJHS), Apr 27, 2022
Liposomes or lipid vesicles were discovered by hydration of a self-forming encapsulated lipid bil... more Liposomes or lipid vesicles were discovered by hydration of a self-forming encapsulated lipid bilayer; liposome drug delivery methods have played an important part in the development of effective pharmaceuticals to enhance treatments. Liposomes are spherical vesicles made up of one or more lipid bilayers with an aqueous compartment in the middle. Liposome is an abbreviation for "lipid body." It derives from the name of sub cellular particles known as ribosome. A.D. Bangham created the first liposomes in the early 1960s. Their dimensions range between 25 and 500nm. They are now an extremely valuable tool in a variety of scientific areas, including chemistry, colloid science, biochemistry, biology, and pharmaceutical research. Liposomes are a distinct and advanced technique for transporting active compounds to the site of action, and numerous dosage forms are already in clinical use. This study outlines the categorization, techniques of synthesis, stability, and applications of liposomal drug formulations.
ABSTRACT: The aim of the work is to formulate sustained release matrix tablets of simvastatin and... more ABSTRACT: The aim of the work is to formulate sustained release matrix tablets of simvastatin and to optimize them using Response Surface Methodology. The tablets were prepared by direct compression method and evaluated as per pharmacopoeia methodology. A central composite design for 2 factors at 3 levels each was employed to systematically optimize drug release profile. Concentration of HPMC K15M (X1) and PVP K30 (X2) were taken as the independent variables and the in vitro dissolution (Y1), t50 % (Y2) and mean dissolution time (Y3) as dependent variables. Response surface plots and contour plots were drawn, and the optimum formulations were selected by feasibility and grid searches. Both the polymers had a significant effect on drug release from the tablets. The formulations were followed Higuchi drug kinetics and diffusion was the prime mechanism of drug release. The polynomial mathematical models produce for various response variables using the regression analysis and were found...
Scopoletin, a derivative of coumarin, is a benzopyrone in nature, and present in the various plan... more Scopoletin, a derivative of coumarin, is a benzopyrone in nature, and present in the various plants. In the present study, scopoletin at a dose of 1mg/kg p.o. once a day and scopoletin at a dose of 1mg/kg p.o. at two times in a day was evaluated for the hypoglycemic and hypolipidemic activity in Wistar albino rats in streptozotocin induced diabetic rats. Glimepiride (0.11mg/kg) was used as reference standard for the activity comparison. Fasting blood glucose level and plasma lipid profiles were measured in diabetic and non diabetic rats at the end of the experiment. Scopoletin showed significant reduction in blood glucose level and lipid level in streptozotocin induced diabetic rats that is comparable to Glimepiride, with more promising decrease in glucose concentration observed in scopoletin two times a day than the scopoletin given once a day. The finding of the present investigation showed that the scopoletin at 1mg/kg dose is very helpful in diabetes and its complication. It sho...
Bipolar affective disorder tends to occur in episodes lasting 3-4 months, followed by complete cl... more Bipolar affective disorder tends to occur in episodes lasting 3-4 months, followed by complete clinical recovery. Future episode can be manic, depressive or mixed. Relapse is very common in bipolar affective disorder, level of social support reduces with the frequent relapses and expressed emotion took place in the negative form and become hurdle in readjustment of patients. 100 bipolar affective disorders with at least one hospitalization and their primary care givers were recruited from RINPAS OPD. People with more than one hospitalization get poor support from caregivers and they face high negative expressed emotion. Frequent relapse reduce the level of social support and increased the expressed emotion.
This paper presents a design of Two Stage CMOS operational amplifier, which operates at ±2.5V pow... more This paper presents a design of Two Stage CMOS operational amplifier, which operates at ±2.5V power supply using umc 2µm CMOS technology. The OP-AMP designed is a two-stage CMOS OP-AMP. The OP-AMP is designed to exhibit a unity gain frequency of 4.416MHz and exhibits a gain of 96dB with a 700 phase margin. Design and Simulation has been carried out in LT Spice tools. For this, a simple analysis with some meaningful parameters (such as gain bandwidth, phase margin, etc.) is performed. The method handles wide variety of specifications and constraints. In this, we formulate the CMOS op-amp design problem and their aspect ratios. The method we present can be applied to a wide variety of amplifier structures, but in this paper we apply the method to a specific two stage CMOS op-amp. The variation in the performance of the op-amp with variations in the width and length of the CMOS and the effect of scaling the gate oxide thickness is discussed. The simulation results have been obtained by...
Herbal medicine is the oldest form of health care known to mankind. Herbs had been used by all cu... more Herbal medicine is the oldest form of health care known to mankind. Herbs had been used by all cultures through history. The leaves of Bauhinia variegata linn. (Leguminosae) are reported to be of great medicinal importance. In the present investigation isolation of chemical constituent was carried out from the leaves of Bauhinia variegata, an evergreen member of the family Leguminosae, using column chromatography. Identification of chemical constituents was done by various techquines viz.MP, TLC, IR, NMR & LC-MS techniques. A bioactive carbohydrate D-pinitol was isolated from the ethanolic extract. These findings are useful in establishing a relationship between chemical composition of the leaf extract and previously reported activities of Bauhinia variegata and also may assign a new potential role of Bauhinia variegata extract in human health care. The presence of the bioactive compound (+)-pinitol in this plant is being reported for the first time.
In the present study attempts has been made to examine the peripheral erythrocytes in fish Cyprin... more In the present study attempts has been made to examine the peripheral erythrocytes in fish Cyprinus carpio for occurrence of micronuclei and using the information for monitoring potential genotoxicity of Azo dye AR-88 and its degradation product. Azo dye like malachite green causes cancer, mutations, chromosomal fracture and teratogenicity. It also causes sinusoidal congestion and focal necrosis in liver, damages mitochondria and brings nuclear alterations. The dye and effluent brought a significant increase in the frequency of micronuclei. The increase in frequency was directly proportional to the concentration of the dye as well as effluent. The effluents produced more deleterious effects as compared to the dye in the exposed fish with respect to change in the cell shape, clumping and focal necrosis of RBC’s. This clearly indicates that longer exposure to AR88 and its degradation products at sublethal levels will produce genotoxic effects in the fish significantly affecting their ...
Aperture Coupled Microstrip Antenna With Quasi-Planner Surface Mounted Horn ~~~2 3 A. Abdel-Rahma... more Aperture Coupled Microstrip Antenna With Quasi-Planner Surface Mounted Horn ~~~2 3 A. Abdel-Rahman , AK Verma., GS Kirov and AS Omar' 'Chair of Microwave and Communication Engineering University of Magdeburg, Magdeburg, Germany ... REFERENCE [1] RQ Lee, KF ...
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