The dielectric relaxation times τ and dipole moments μ of N-methylacetamide (NMA) mixed with N,N-dimethylformamide (DMF) in benzene solutions have been obtained using standard standing wave microwave techniques and Gopala Krishna’s single frequency (9.90 GHz) concentration variational method at 25, 30, 35, and 40

Speaking is the first way to interact with others in the social community. Furthermore, the success in learning a language at first can be seen from the ability of the learner’s speaking. However, it is very hard for the second language learners to speak the foreign language, especially English. There are a lot of reasons why they get difficulties in speaking, such as lack of ideas to tell, lack of vocabularies to express the ideas, lack of the exposure to speak, and lack of the interesting teaching method or technique that can motivate them to speak. Thus, this research applied Cooperative Storytelling Strategy to Improve Students' Speaking proficiency of the students of grade 11in Nepal Rastriya Chandraganga Secondary School, Gagretal, Surkhet. This research was a collaborative classroom action research whose main purpose was to know whether or not storytelling strategy could improve the students’ speaking skill. Meanwhile, the specific purposes consisted of describing: (1) To implement storytelling strategy in 11th graders students at our School to improve their speaking skill. (2)To enhance their confidence in speaking skill and create fluency in speaking. The data of this research were got from the observations done by Story telling contest and Speaking test. The result showed that there was an improvement on students’ speaking proficiency after the implementation of storytelling strategy. The speaking test result in cycle two explained that the students’ speaking aspects got good progress. Storytelling improved their comprehension, fluency, vocabulary, grammar, and pronunciation. Thus, it can be said that storytelling strategy could improve students’ speaking skill.Journal of NELTA Surkhet,  Vol. 5 January, 2018, Page: 97-105

Friction stir welding (FSW) of 6-mm-thick plates of AA6061-T651 was carried out using a simple cylindrical pin tool. The impact of welding factors (rotational speed, welding speed) on tensile properties, microhardness, and surface roughness of FSW joints was investigated. Ultimate tensile strength (UTS), yield strength, and % elongation of AA6061-T651 base plate as well as FSW joints were found out using a universal testing machine (UTM). Maximum value of UTS and yield strength were achieved at rotational speed of 1400 rpm and welding speed of 20 mm/min. Minimum surface roughness was reached at rotational speeds of 1400 rpm and welding speed of 20 mm/min. Microstructural evolutions in the friction stir welded (FSWed) joint and microhardness profile were also determined. Maximum hardness of HV 120 was acquired for the stir zone (SZ). Hence, attainment of the maximum tensile strength, microhardness, and minimum surface roughness during FSW is a desired method to improve the service life and suitability of AA6061-T651.

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Using standing-wave techniques, the dielectric constant ( epsilon ') and the dielectric loss ( epsilon ") of dilute solutions of N,N-dimethylformamide (DMF) in benzene, dioxane and carbon tetrachloride have been measured at 9.987 GHz at 25, 35, 45 and 55 degrees C. Following the single-frequency concentration variational method, the dielectric relaxation time ( tau ) and the dipole moment ( mu ) at various temperatures (25, 35, 45 and 55 degrees C) have been evaluated. From these studies the monomer structure of DMF in various solutions (benzene, dioxane and carbon tetrachloride) has been inferred and for a DMF-in-benzene solution a solute-solvent type of molecular association has been found. The energy parameters ( Delta Fepsilon , Delta Hepsilon and Delta Sepsilon ) for the dielectric relaxation of DMF in benzene, dioxane and carbon tetrachloride solutions have been calculated and compared with the corresponding viscosity parameters. A comparison between these two sets of parameters shows that the dielectric relaxation, like the viscous flow, can be considered as a rate process.