Mathematical modeling and analysis of elastic waves in a thermo piezoelectric multilayered rotating composite rod with LEMV/CFRP interface

In this present paper, we form the mathematical model for wave propagation in a thermo piezoelectric multilayered rotating composite rod made of inner and outer piezoelectric layer bonded together by Linear Elastic Materials with voids (LEMV).To uncouple the equation of motion, electric and heat conduction equations, displacement potential functions are introduced. The frequency equations are obtained for longitudinal and flexural modes of vibration and are studied numerically for heat conducting PZT-5A material.The computed non-dimensional frequency is presented in the form of dispersion curves against various physical quantities. Adhesive layer Linear Elastic Materials with Voids (LEMV) is compared with Carbon Fibre Reinforced Polymer (CFRP).We found that the frequency wave characteristics are more stable and realistic in the presence of thermal, electrical and the rotation parameters

Viscothermoelastic waves in a gravitated piezoelectric multilayered LEMV /CFRP cylinder coated with thin film

The present paper is concerned the effects of gravitational force and rotation in a composite multilayered hollowcylinder which contain inner and outer piezo-thermoelasticity layers bonded by Linear Elastic Material with Voids (LEMV) withinthe frame of dual-phase-lag model.Also the composite multilayered hollow cylinder coated with thin film is considered.Theequation of displacement components, temperature, and electric are obtained using linear theory of elasticity. The dispersionequations are acquired by means of traction free boundary conditions and are numerically analyzed for CdSe material.Theenumerated frequency, thermal and electrical nature against wave number in the presence of gravatity and rotation is presentedgraphically. Adhesive layer LEMV is compared with Carbon Fiber Reinforced Polymer (CFRP) in presence of gravity androtation

Analytical model of wave propagation in piezo thermo elastic multilayered PZT5A/LEMV/SWCNT/LEMV/PZT5A circular cylinder

In this study we revised the axisymmetric vibration of an infinite thermo piezoelectric composite circular hollow cylinder made of inner and outer thermo piezoelectric layer bonded together by a Linear Elastic Material with Voids (LEMV) and Single Walled carbon Nano Tube (SWCNT) is studied. The frequency equations are obtained for the traction free outer surface with continuity conditions at the interfaces. The equations of motion, heat and electric conduction also exactly solved. Numerical results are carried out for the inner and outer hollow piezoelectric layers bonded by LEMV and SWCNT layers. The dispersion curves are compared with core/LEMV/core, core cylinders

In vitro antifungal screening of some medicinal plants against Macrophomina phaseolina

The medicinal plants present enormous reservoir of potential microbial compounds that could be useful alternative to synthetic microbicides and are being used to develop drugs. In the present study of five selected medicinal plants the leaf powder extracts were tested against Macrophomina phaseolina by disc diffusion method. It was found that ethanol extract strongly effective against Macrophomina phaseolina, is a causal agent for charcoal rot of sunflower fungal pathogen. &nbsp

A REVIEW ON RESEALED ERYTHROCYTE AS A NOVEL DRUG DELIVERY SYSTEM

ABSTRACTCellular carriers possess great potential and merits in various modules of drug delivery. Among such cellular carriers, erythrocytes have been foundto possess huge merits for the targeted and controlled drug delivery since they are non-immunogenic, non-toxic and their circulation can be readilycontrolled and could be manipulated with reference to time. Erythrocytes mediated drug delivery has been reported with therapeutic enzymesand antiviral agents to maximize therapeutic performance, reduce the side effects, as circulating depots for controlled drug release, drug targeting,treatment of parasitic diseases, hepatic tumors, removal of toxic agents etc. In this review, isolation of carrier erythrocytes, methods of drug loading,characterization parameters methods and clinical applications of resealed erythrocytes were presented.Keywords: Resealed erythrocyte, Drug targeting, Controlled release, Carrier mediated drug delivery system

Delay Tolerance in Wireless Networks through Optimal Path Routing Algorithm

AbstractA Delay Tolerant Network (DTN) is a mesh network designed to operate effectively over great distances. DTNs have not custom to vindicate complete track from source to destination most of the time during communication. Existing data routing approaches used in DTNs were based on multi-copy routing. However, these existing methods incur overhead due to exorbitant transmissions and increases seer side processing. Hence there is a necessity to propose an optimal path routing algorithm to overcome the above issues. The optimal path routing reduces the proposition of message dropping and wax the throughput. The design approximate also uses random path generation that can reveal the path that affirms active connection for a longer duration to achieve a desired routing delay. In addition, this system has an effective buffer management mechanism to increase throughput and decrease routing delay. The analysis and as well as the simulation results clearly shows that the optimal path routing algorithm, provides high throughput and low routing delay compared to existing routing approaches

Inorganic phosphorus fractions and phosphorus availability in long term fertilizer cum manurial trials under coconut cultivation

Phosphorus is one of the major nutrients required for coconut production. The information about the fate of native and applied phosphorus in soil is essential for better management of the nutrient. The changes on inorganic P fractions and P availability in soil after 43 years of coconut cultivation were studied from a long term fertilizer cum manurial experiment at CPCRI, Kasaragod. There were 6 treatments viz. tillage with organic and inorganic fertilizer, tillage with inorganic fertilizer, inorganic fertilizers with basin forking, tillage alone, herbicide application without tillage and fertilizer and the control. Soil samples were taken at two depths (0-30 and 30-60 cm) from coconut basin for analysis. Phosphorus was fractionated into Easily Soluble P (ES-P), Aluminium P (AI-P), Iron P (Fe-P), Calcium P (Ca-P) and Reductant Soluble P (RS-P) through sequential extraction. The dominant phosphorus fraction in the coconut basin at 0-30 cm depth was Ca-P and the trend is as follows: Ca-P> Fe-P> RS-P>Al-P>ES-P. However, at 30-60 cm depth, Fe-P became the dominant fraction and the trend is Fe-P>Ca-P>RS-P>Al-P>ES-P. Long-term phosphorus fertilization would facilitate the accumulation of soil Ca-P, and thus improve soil P availability. In the interspaces, Fe-P was the dominating fraction in both the depths followed by Ca-P and RS-P. The difference in P fractions in fertilized and non-fertilized plots clearly showed that the fertilized plots have high content of all the inorganic phosphorus fractions in both the depths. Application of mineral P along with forking in basin showed a high concentration of all the inorganic P fractions compared to other fertilizer applied treatments

Antioxidant activity in some selected Indian medicinal plants

The study was carried out to determine the antioxidant activity of selected medicinal plants namely Albizia amara, Achyranthes aspera, Cassia fistula, Cassia auriculata and Datura stramonium by inhibition of lipid peroxidation technique. The highest inhibition of lipid peroxidation activity wasobserved in A. amara (96%) followed by C. fistula (89%) and C.auriculata (89%). The potency of  protective effect of A. amara was about 4 times greater than the synthetic antioxidant butylated hydroxy toluene (BHT). The total alkaloid content varied from 24.6 ± 0.18 to 72.6 ± 2 mg g-1 in the extracts. Flavanoid contents were between 23.15 ± 0.2 and 63.3 ± 0.6 mg g-1 in the methanolic extracts of these plants. Our study indicates that the antioxidant activity of A. amara could be harnessed as a drugformulation

Capparis sepiaria Linn - Pharmacognostical standardization and toxicity profile with chemical compounds identification (GC-MS)

The present study was intended to evaluate the various pharmacognostical procedures in the leaves of Capparis sepiaria Linn., (Capparidaceae). The various pharmacognostical parameters were carried out as per WHO guidelines procedure i.e., bitterness, fineness, microscopical sections, loss on drying, water and alcoholic extractive values, water insoluble ash, acid soluble ash, total ash, swelling index, foaming index, heavy metal analysis, phytochemical analysis and toxicity studies (acute, subacute and chronic toxicity). The study was extended with analyzing the chemical compounds identification in the EECS (ethanolic extract of Capparis sepiaria by using GC-MS. The presence of various phytoconstituents such as glycosides, reducing sugars, flavonoids, saponins, starch and terpenoids is evidenced in EECS & AECS. The results showed that acid insoluble ash (1.70%), total ash (8.68%), water soluble ash (3.42%), water extractive (31.55%), alcohol extractive (5.06%), foaming index (105.26 Unit), loss on drying (9.84%), swelling index (4.16%), acute toxicity (nil), sub-acute toxicity (nil), chronic toxicity (nil). The study was concluded with the plant has standardized as per the World Health Organization procedures. The result of the pharmacognostical standardization of this plant serves as a reference piece and helps in future identification and authentication of this plant specimen. Might be the plant C. sepiaria has potential property by the standardization and it can be included in the normal flora of the plant kingdom.Keywords: C. sepiaria; Microscopical; Macroscopical standardization