ALIPHATIC ORGANIC COMPOUNDS : A SUBSTITUTE OF FERRITE MATERIALS IN ISOLATOR FOR HIGH FREQUENCY APPLICATION

Frequency instability of source oscillator is one of the major hurdles in microwave generator for example : klystron, magnetron, etc. one of the primary source of such instability is the reflection from the load side that highly affects the generating frequency.[10] isolators are the unanimous solution for such problems. Since the energy of the reflected wave resulting from load mismatch are dominantly absorb by the isolator that prevent the frequency instability in the source generator. Till date ferrites have been employed as the fundamental material in isolator.[10] the operation of ferrite isolator rely on the principal that when a circularly polarized wave is made to pass through a ferrite rod, which has been influence by an axial magnetic field, the axis of polarization gets tilted in clockwise direction and the amount tilt depends upon the strength of magnetic field and geometry of the ferrite. Some recent findings do suggest that aliphatic organic compounds are capable of exhibiting faradays rotation.[12] faradays rotation is mainly dependent on verdant constant and novel materials are required to obtain optimized verdant constant for tailor made high frequency application. This article highlight the feasibility and applicability of aliphatic organic compound in isolator applications the aim is to attract the technical interest towards employment of optimized organic materials for obtaining requisite verdant constant required for faradays rotation

Preparation and Diverse Properties of Cobalt Ferrite Ferrofluid

The synthesis of cobalt ferrite (CoFe2O4) nanoparticles by sol-gel auto-combustion and their characterization by standard techniques like X-ray diffraction (XRD) used to characterize the structure, the size of the nanoparticlesafter successful characterization, these magnetic CoFe2O4nanoparticles were dispersed in water to obtain ferrite nanofluids i.e. ferrofluids. Poly-vinyl- alcohol was used as surfactant while preparing ferrofluids. In this study, CoFe2O4nanoparticles were synthesized by sol-gel auto-combustion technique. StableCoFe2O4 ferrofluids in various volume fractions (0.0, 0.5 and 1.0) have been prepared using water as base liquid. Poly-vinylalcohol was used to increase the inter particle interactions of surface modified CoFe2O4 nanoparticles. Specific gravity bottlewas used to measure density, Ostwald’s viscometer used for viscosity measurements and ultrasonic investigationsare done by ultrasonic interferometer at 2 MHz for the ferrofluids at different temperatures

Pd(II) Complexes with Some New Monoazo Dyes

834-83

Extraction & Spectrophotometric Determination of Pd(II) with 2'-Hydroxy-4-methoxy-5'-methylchalkone Oxime

214-21

Proton-Ligand Constants of 2-Carboxy-2'- hydroxy-3',5'-dimethylazobenzene -4- suI phonic & 2-Carboxy-2'-hydroxy-3',5' -dichloroazobenzene- 4-sulphonic Acids & Stability Constants of Their Chelates with Fe(III)

541-54

Study of Zero Budget Natural Farming in Northern Raigad

The Research paper is on the ‘Study of Zero Budget Natural Farming (ZBNF) in Northern Raigad’. For this paper, we approached farmers practicing ZBNF to know what exactly ZBNF method is?  How is it economically and environmentally friendly? What is the nature of economic profile of farmers practicing ZBNF? We used interview method for the project and after analyzing their answers, we found out that they don’t have commercial approach in farming. They are producing for household purpose and they sell the remaining produce to acquaintances. In the absence of well-organized market, they need to sell extra produce to known people. ZBNF is a good concept in agriculture sector which provides healthy and nutritious agricultural products. ZBNF is low-cost farming but it needs minimum 3 to 4 years to set the productivity of land to better results. If government provides subsidy to these farmers, then it will develop commercial approach in the farmers and give good results to the nation. If this method of farming is adopted by all farmers it will reduce many diseases like Cancer, and can help promoting healthy lifestyle.   &nbsp

Processing of Lead Zirconate Titanate-graphite 3-3 Piezocomposites

The lead zirconate titanate (PZT)-graphite piezocomposites have potential for higherpiezoelectric sensitivity, lower acoustic impedance, higher piezoelectric voltage constants, higherelectromechanical coupling coefficient, and higher hydrostatic coefficients as compared to densePZT materials. In addition, the properties of piezocomposites can be tailored for various weightpercentage of graphite powder. To study the phenomena, PZT-graphite 3-3 composites wereprepared by mixing calcined PZT and commercially available graphite powder. The mixed powderwas compacted, sintered, and poled by corona poling technique. Scanning electron microstructureswere recorded to study the effect of graphite on processing of 3-3 piezocomposites. The polarisingbehaviour, piezoelectric and dielectric properties of PZT-graphite composites were studied

Effect of Organotin tributyltin chloride on Oxygen consumption of Macrobrachium kistnensis

                    Aquatic animal’s responses to chemical pollutants in the aquatic environment are usually understood, through determining their rate of survival and changes in the levels of various physiological phenomenon’s. In the present study effect of LC50 for 48 hrs of Organotin tributyltin chloride on the rate of oxygen consumption of freshwater prawn, Macrobrachium kistnensis has been determined. The prawns were exposed to lethal concentration of 0.26 ppm of organotin tributyltin chloride and oxygen consumption rate was measured after 1, 2, 4, 8, 12 and 24 hrs of exposed period. The obtained data showed that there was an increase in the rate of oxygen consumption in Macrobrachium kistnensis, when exposed for 1 and 2 hrs to 0.26 ppm of TBTCl, where as the rate of oxygen consumption decreased significantly (

Haemorrhage in early pregnancy: unusual presentation of placenta increta as complete mole

We report a case of haemorrhage in early pregnancy following suction evacuation for a complete hydatidiform mole which later turned out to be case of placenta increta. Morbidly adherent placenta in early pregnancy a is rare event. There are few reported cases of obstetric hysterectomy in early pregnancy due to undiagnosed morbidly adherent placenta

Grammar Generation and Optimization from Multiple Inputs

Human being uses multiple modes like speech, text, facial expression, hand gesture, showing picture etc. for communication in between them. The use of this ways for communication makes human communication more simple and fast. In previous years several techniques are used to bring the human computer interaction more closely. It costs more for development and maintenance of Multimodal grammar in integrating and understanding input in multimodal interfaces i.e. using multiple input ways. This leads to improve and investigate more robust algorithm. The proposed system generates the grammar from multiple inputs called as multimodal grammar and evaluates grammar description length. Furthermore, to optimize the multimodal grammar proposed system uses learning operators which improves grammar description DOI: 10.17762/ijritcc2321-8169.15016