North Eastern Regional Institute of Science and Technology

About: North Eastern Regional Institute of Science and Technology is a education organization based out in Itanagar, India. It is known for research contribution in the topics: Population & Raman spectroscopy. The organization has 813 authors who have published 1429 publications receiving 16122 citations.

Importance of automatic variable single hitch point for 2WD tractors – A theoretical analysis

Abstract: Software is developed in Visual Basic 6 environment for predicting the haulage performance of 2WD tractor. Three types of inputs namely tractor, trailer and operating parameters are required to run the software. Various empirical and theoretical equations were used for predicting the haulage performance parameters such as draft, slip, actual speed, transport productivity, transport efficiency, fuel economy index, front and rear wheel utilization factor etc. In addition to this, the software also gives a warning signal when either stability of tractor or engine power fails. It was used to evaluate the haulage performance by varying the hitch height (HH) at various operating conditions. It was observed that there is a significant increase in the maximum payload 78, 300 and 3300% while HH was lowered from 0.7 to 0.1 m at 0, 5 and 10° slope, respectively. However, the dynamic load on rear axle increased from 1470 to 1730 and 1500 to 1820 kg when HH increased from 0.1 to 0.7 m at 800 and 1000 kg payload, respectively. Further, it was observed that fuel economy index was reduced by 6.3% and engine power requirement by 4.23% at 800 kg payload when HH was raised from 0.1 to 0.7 m. It was observed that stability of tractor increases by lowering the HH, however, traction increases by raising the same. Hence, it was concluded that variable HH can meet the requirements of stability as well as traction during transport as per necessity.

Purification and Characterization of Versatile Peroxidase from citrus sinensis Leaf Extract and its Application in Green Chemistry

Abstract: Versatile peroxidase, a new family of ligninolytic peroxidases have catalytic properties of both lignin peroxidase and manganese peroxidase and has been isolated from citrus sinensis leaf extract w...

Redesign of Work-Accessories Towards Minimizing Awkward Posture and Reduction of Work Cycle Elements in an Indian Shop-Floor Workstation

Abstract: Indian plastic processing industry comprises of Micro, Small and Medium Enterprises (MSMEs). Manual labor and locally designed workplace fixtures are observed in shop-floor workstations. Aim of present research was to identify incidence of musculoskeletal ailments and awkward working postures among workers in the granulator workstation and propose design modifications from physical ergonomics perspective. Combination of research techniques comprising of questionnaire study, postural assessment tools, statistical analysis, digital human modeling and method study were utilized to accomplish the stated objective. Significant occurrence of body part discomfort was observed. Workstation accessories designs were not in accordance with recommended guidelines. Workstation design and work methods were found incompatible with worker’s anthropometry and thus led to the prevalence of awkward working postures. Redesign of workstation accessories and subsequent modification of work methods, enabled improvement of working postures and reduction of work elements. Research methodology demonstrated in present study may be adopted by engineers/managers/supervisors in MSMEs towards implementing context specific human centric production systems.

ABER of dual pre-detection EGC receiver over correlated Hoyt fading channels

Abstract: Average bit error rate (ABER) performance of a dual pre-detection equal gain combining (EGC) diversity receiver has been analyzed over correlated Hoyt fading channels. Mathematical expressions for the probability density function of the receiver output signal-to-noise ratio and the ABER for binary, coherent and non-coherent modulations have been presented. Numerically evaluated results have been found to be closely matching with the computer simulation results. The ABER performance of the pre-detection EGC receiver has been compared with the maximal ratio combining receiver for different modulation schemes.