BRACU Faculty Publications: Recent submissions
Now showing items 161-180 of 665
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An experimental demonstration of quantum NOT gate: transition from classical to quantum regime
(© 2010 IEEE, 2010)Path of a photon was considered to be used as qubit for implementing quantum NOT gate. An experimental setup was designed using a Mach-Zehnder interferometer constructed from simple optical devices such as He-Ne lasers, ... -
Identification of multiple rare earths and associated elements in raw monazite sands by laser-induced breakdown spectroscopy
(© 2010 Elsevier Ltd., 2011-02)Laser-induced breakdown spectroscopy (LIBS) is an emerging and promising tool for rapid and efficient elemental analysis. We used the LIBS technique to analyze the raw monazite sands collected from the beaches in southern ... -
Fabrication of gold nanoparticles in water by laser ablation technique and their characterization
(© 2011 Springer-Verlag., 2011-11)A colloidal solution of gold nanoparticles in deionized nanopure water was produced by laser ablation technique without the use of any chemical/surfactant. Spectral characterization and morphological studies of these ... -
Determination of Ca content of coral skeleton by analyte additive method using the LIBS technique
(© 2012 Elsevier Ltd., 2012-09)Laser-induced breakdown spectroscopic (LIBS) technique was used to study the elemental prole of coral skeletons. Apart from calcium and carbon, which are the main elemental constituents of coral skeleton, elements like Sr, ... -
Generating near-field fresnel diffraction patterns by iterative fresnel integrals method: a computer simulation approach
(© 2012 Nova Science Publishers, Inc., 2012-12)Recently the concept of computer-based virtual experiments in all branches of physics has generated wide spread interests among the researchers. In this Chapter, we describe the Iterative Fresnel Integrals Method (IFIM), ... -
Elemental analyses and determination of lead content in kohl (stone) by laser-induced breakdown spectroscopy
(© 2012 Society for Applied Spectroscopy, 2012-04)Elemental analyses of kohl (stone) samples collected from three different parts of the world were performed using laser-induced breakdown spectroscopy (LIBS). The analyses indicated that lead (Pb), copper (Cu), silver (Ag), ... -
Gold nanoparticles: fabrication by laser ablation technique and their optical and morphological studies
(© 2013 Nova Science Publishers, 2013-01)Material particles of the size of few nano-meters to couple of hundreds of nano-meters exhibit size and shape dependent properties and the consequent versatility and importance in their use have made them an exciting and ... -
Determination of the ash content of coal without ashing: a simple technique using laser-induced breakdown spectroscopy
(© 2013 American Chemical Society, 2013-07-18)The bituminous coal samples were analyzed using the technique of laser-induced breakdown spectroscopy (LIBS). The fraction of the ash content of the coal was spectroscopically determined by a technique requiring only two ... -
Detection of trace amount of arsenic in groundwater by laser-induced breakdown spectroscopy and adsorption
(© 2014 Optics and Laser Technology, 2014)LIBS technique coupled with adsorption has been applied for the efficient detection of arsenic in liquid. Several adsorbents like tea leaves, bamboo slice, charcoal and zinc oxide have been used to enable sensitive detection ... -
Radiative lifetime measurement of excited neutral nitrogen atoms by time resolved laser-induced breakdown spectroscopy
(© 2014 Royal Society of Chemistry, 2014-08)Lifetimes of the excited 2P2 (3P) 3p 4S3/2 level of a nitrogen atom corresponding to transitions to different lower states have been estimated by measuring the line intensity of a transition as a function of the delay time ... -
Laser Raman spectroscopy with different excitation sources and extension to surface enhanced raman spectroscopy
(© 2015 Hindawi Publishing Corporation, 2015)A dispersive Raman spectrometer was used with three different excitation sources (Argon-ion, He-Ne, and Diode lasers operating at 514.5 nm, 633 nm, and 782 nm, resp.). The system was employed to a variety of Raman active ... -
Electron paramagnetic resonance spectra of Fe2+ and Fe3+ ions in SrO: evidence for off-centre displacement of Fe2+ ions
(© 1978 Journal of Physics C: Solid State Physics, 1978)The electron paramagnetic resonance (EPR) spectra of Fe2+ and Fe3+ ions in single crystals of SrO are reported. Fe3+ ions occupy sites of orthorhombic symmetry and their EPR spectra have been fitted with an S=5/2 ... -
A quick method to determine the impurity content in gold ornaments by LIBS technique
(© 2015 SciTePress, 2015)Laser induced breakdown spectroscopy (LIBS) and low energy dispersive X-ray fluorescence (ED-XRF) spectrometer, were used to determine the line intensity and concentration ratios of the major impurities (Cu and Ag) with ... -
Education and skill development of santal children and youth in Bangladesh
(© 2014 Bangladesh Education Journal, 2014-06)This study explores education and skill development situation, needs, expectations, and challenges of Santal children and youth in Bangladesh. As a part of the study, focus group discussions (FGDs) with Santal children and ... -
The impact of parents’ education on parenting and pedagogy on child’s development and learning
(© 2015A RNEC Connections, 2015-10) -
Testing causal interrelationships between population dynamics, factors of technology, and economic growth
(© 1992 Centre for Urban Studies, 1992-03) -
Macrolevel models of comparative economic growth in peripheral and core nations
(© 1994 The Asian Economic Review, 1994) -
On the triangular relationship between political corruption, gender inequality, and socio-economic development in Bangladesh
(© 2003 Bangladesh Development Initiative & The University Press Limited., 2003-04)The book contains articles from a variety of disciplines held together by a common thread: socio-economic development of Bangladesh. The articles are grouped together by their disciples such as political science, social ... -
Traffic congestions in Dhaka and socio-economic development in Bangladesh: some micro and macro-level connections
(© 2017 Bangladesh Development Initiative & The University Press Limited., 2007)Development Issues of Bangladesh-III has been written with the theme: human development and quality of life in Bangladesh. The two concepts, central to the evolution of a civilized society, are approached from a variety ... -
Methodological issues in socio-economic development
(Concept Publishing Company, 2007)"This set of three volumes is not just a compilation of essays in honour of Professor Ashok Kumar Dutt, it personifies his life as a person and a professional. Prof. Dutt has established his international credentials as ...