Anand Chaudhary, Anand Mishra, Pramod Wagle, Chet Bahadur Rana, Sashi Ram Sharma, Kumar Subedi
Anand Chaudhary, Anand Mishra, Pramod Wagle, Chet Bahadur Rana, Sashi Ram Sharma, Kumar Subedi
Abstract:
Cereal crop seed priming, particularly for rice and wheat, has been shown to be more effective in reducing the negative impacts of unfavorable weather conditions. In addition to improving crop establishment, pre-germinated seeds and seed priming boost yield, increase competitiveness against weeds, and eliminate the need for expensive resowing. In order to investigate the impact of the seed priming technique on wheat yield and yield-attributing characteristics, a field experiment was carried out at the Horticulture Research Station, Kimugaun, Dailekh, during the 2016-17 and 2017-18 growing seasons. In 2016-17, the treatment that used pure water for 8 hours for seed priming had significantly higher yield (5.4 t/ha) compared to seed priming with urea for 8 hours (4.9 t/ha). Similarly, seed priming with pure water for 8 hours resulted in a significantly higher weight for 1000 grain (57.3 g), followed by seed priming with urea for 16 hours (56.0 g). However, in 8-hour seed priming (with both pure water and urea) and 16-hour seed priming with urea, early heading at 105 days after sowing (DAS) was noted. After 16 hours of urea priming and 24 hours of pure water seed priming, a noticeably early heading within 106 DAS and 107 DAS was noted in 2017–18. However, the highest grain yield (5.7 t/ha) was seen after 8 hours of seed priming with pure water, and 5.6 t/ha after 16 hours of seed priming with pure water. The results of a two-year study showed that seed priming increased wheat yields when compared to dry seed sowing, and that priming with pure water for eight hours was more productive than either no priming, urea priming, or priming for a longer period of time. For its use on late-sown wheat, where it can promote early heading and lessen the impact of force maturity issues, more field testing is required.
Abdullah Al Hossain Newaz
Abstract:
In this experiment, the primary goal is to investigate the free vibration characteristics of a single-degree-of-freedom (SDOF) mechanical system. The objectives include determining the system natural frequency, damping ratio, and analyzing its transient behavior during free vibrations. We employ a combination of theoretical analysis, numerical simulations using Simulink, and experimental observations to achieve these objectives. Numerical results provide insights into the dynamic response, revealing critical system behaviors such as damping effects. The discussion contextualizes the findings within the realm of mechanical engineering principles, emphasizing practical implications. In conclusion, this study offers an understanding of SDOF system dynamics, with applications in engineering design and analysis.
Priya Jacob
Abstract:
The aim of the study is to assess the commissioning accuracy of Intensity-Modulated Radiation Therapy (IMRT) and RapidArc from a Varian TrueBeam linear accelerator, with a procedure guided by protocols established in American Association of Physicists in Medicine Task Group 119. Dosimetric accuracy has been verified in 6 MV photon beams in various testcases: a mock prostate, a mock head/neck, a multi-target, and a C-shape. Confidence Limits (CLs) were determined for both point dose measurements and gamma analysis to assess the agreement between planned and measured doses. The results indicated that CLs for both IMRT and Rapid Arc (RA) are within the acceptable limits according to TG-119, thus confirming the accuracy and reliability of the treatment planning system and dosimetry equipment. The aim of this study was to extend the scope of the TG-119 protocol to include RA delivery-a comprehensive evaluation of the accuracy of dosimetric commissioning for modern radiotherapy techniques.
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EFFCTS OF SEED PRIMING ON YIELD AND YIELD ATTRIBUTING CHARACTERS OF WHEAT ATKIMUGAUN, DAILEKH, NEPAL
