कृषि विज्ञान केंद्र नारककल

कृषि विज्ञान केंद्र नारकक

Awareness campaign for Fisherwomen

Women in fishing communities have decisioh-making role in community management. With the increasing commercialisation of fishing industry I women's access to post-harvest operations in fisheries has been declining: It is- estimated that only about 20 percent of women from traditional fishing households get opportunities for income generation from fishery related activities which are seasonal

Action research for rural empowerment in Chellanam fishing village

The empowerment approach aims at equipping the rural people with ways and means of improving their living conditions. Extension education was found to be useful in producing the desired change in the target grou

Note on the extension of prawn culture technology to women in a coastal village

Prawn farming is a potential area of income generation for women in fishing villages. Observations indicate that women in small scale prawn farming households do have involvement in the traditional system. They also play an important role in the management of other activities such as livestock rearing and vegetable cultivation in their farms. Given more information and training they can be usefully involved in the adoption of the technology and also management of the farms

Grating-based Dipole Antenna Configuration for High Gain Directional Radiation characteristics

The experimental and simulation studies of the radiation performance enhancement of a dipole antenna using metal strip grating are presented in this paper. The subwavelength imaging configuration of the metal strip grating is utilized for enhancing the radiation performance of a dipole antenna working in the S-band. The resultant design shows a gain of 9 dBi and front to back ratio of the design is found to be -23 dB at resonance. The coupling between electric and magnetic resonances provides the necessary impedance matching performance when the antenna is brought in the vicinity of the grating

Wideband Planar Antenna for New Generation Mobile Applications

A wideband, compact planar monopole antenna having a 2 : 1 VSWR bandwidth of 98% (1.68 GHz–4.9 GHz) is presented. The omnidirectional radiation pattern with moderate gain and linear polarization in the entire band makes the antenna an excellent candidate for new generation mobile applications. Details of the antenna design and a comparison of simulated and measured results are presented and discussed

Grating-based Dipole Antenna Configuration for High Gain Directional Radiation characteristics

The experimental and simulation studies of the radiation performance enhancement of a dipole antenna using metal strip grating are presented in this paper. The subwavelength imaging configuration of the metal strip grating is utilized for enhancing the radiation performance of a dipole antenna working in the S-band. The resultant design shows a gain of 9 dBi and front to back ratio of the design is found to be -23 dB at resonance. The coupling between electric and magnetic resonances provides the necessary impedance matching performance when the antenna is brought in the vicinity of the grating

Effect of doping on the dielectric properties of cerium oxide in the microwave and far-infrared frequency range

Cerium oxide (CeO2) has been prepared as a ceramic dielectric resonator by a conventional solid-state ceramic route. The sintered CeO2 has a high dielectric quality factor (Q×f), Q value of 10 000 at 6 GHz with a relative permittivity (ε′) of 23, and temperature coefficient of resonant frequency (τf of -53 ppm/°C. The Q value increases to 20 000 at 6 GHz when the CeO2 is doped with 1 mol% CaCO3. Higher levels of CaCO3 doping lowers the Q and ε′ values and simultaneously decreases τf. TiO2 doping decreases τf and slightly increases ε′, but deceases the Q value. The Q value of pure CeO2 increases to 105 000 at a frequency of 5.58 GHz when it is cooled to 30 K, whereas Q ≈ 85 000 at 5.48 GHz for 1-mol%-CaCO3-doped CeO2 at 30 K