Browsing by Author "Moniruzzaman, S. M."

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EFFECT OF DU'FERENT SOURCES OF JUTE (Corchorus capsularis L.) SEEDS ON GERMINATION, VIGOUR AND EMERGENCE ATTRIBUTES
(Sher-e-Bangla Agricultural University Research System (SAURES), Dhaka, Bangladesh, 2008-07) Islam, M. M.; Sarkar, M. A. R.; Akter, N.; Moniruzzaman, S. M.; Alamglr, M. A.
A series of experiments were conducted to assess the germination, vigour and emergence of jute seeds collected from live different sources of Bangladesh. The seed germination and vigour estimation experiments were laid out at the Agronomy laboratory, Bangladesh Jute Research Institute (BJRI), Dhaka in completely randomized design with four replications and the emergence experiments were conducted at greenhouse of B.JRI, Dhaka and field of Jute Agriculture Experimental Station (.IAES), Manikganj in randomized complete block design with four replications during March to .June 2004. The treatments consisted of five different seed sources viz., i) Bangladesh Jute Research Institute (B.lRI), ii) Bangladesh Agricultural Development Corporation (BADC), iii) Farmers of Manikgonj. iv) Farmers of Kishoregonj and v) Local market. The variety CVL- I of the Corchorus capsularis L. was used as study material. The results revealed that the germination. vigour index and coefficient of germination of CVL-I varied significantly due to seed sources. Germination, vigour, co-efficient of germination observed better in B.lRI seeds toll owed by BADe. Emergence, survivability and relative field emergence varied significantly for seed sources. BJRI seeds performed better in these respects while grown under greenhouse and field conditions. Significantly positive correlations were observed among germination, vigour index and emergence.
Force based Design Approach for Seismic Evaluation of Padma Multipurpose Bridge Pier at Different Performance Levels
(Research and Development Wing, MIST, 2022-11) Ahmed, K. S.; Moniruzzaman, S. M.; Hossain, Tahsin Reza; Bosunia, Shamim Z
The Padma Multipurpose Bridge (PMB) is one of the biggest megaprojects of Bangladesh connecting one third of the country with the capital city, Dhaka. The infrastructure is expected to produce considerable uplift on the nation’s transport system, the national and regional economy, employment, household income, and ultimately, poverty reduction. From construction and river management points of view, it is the most difficult and engineering innovationintenstive project in the world. Hence the Padma Multipurpose Bridge (PMB) required analytical, computational and experimental studies. In this work, a 3D Finite Element (FE) model of the actual PMB containing a single (6x150m) 900m modules has been developed in MIDAS Civil, a commercial computer program for bridges. P-y soil spring model following API guideline has been developed to conform flexible support system of the bridge pier. Following BNBC 2020, the bridge's performance has been evaluated for the 475-year, 975 years, and 2475- year return periods for Service Level, Design Basis and the Maximum Credible Earthquake (MCE), respectively. The forced based design shows that the bridge pier reached only 28% and 36% of its axial and shear capacity respectively for an earthquake return period of 2475 years. On the other hand, the pier has reached a maximum of 41% of its total shear capacity for the same seismic level.