Bangladesh Journal of Scientific and Industrial Research (Bangladesh J Sci Ind Res)

Publisher: Bangladesh Council of Scientific and Industrial Research

Journal description

Bangladesh Journal of Scientific and Industrial Research, a globally recognized Journal, publishes original articles, short communications and reviews on all aspects of scientific, agricultural and industrial research. The scope of the journal covers a vast range of scientific, agricultural and industrial disciplines.

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5-year impact 0.00
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Website Bangladesh Journal of Scientific & Industrial Research website
ISSN 0304-9809
OCLC 186384512
Material type Document, Government publication, National government publication, Periodical, Internet resource
Document type Internet Resource, Computer File, Journal / Magazine / Newspaper

Publications in this journal

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    ABSTRACT: In this article production of biodiesel from Madhuca indica oil (MI-oil) containing high % of free fatty acids (FFA) by transesterification process with methanol over basic zeolites such as NaY loaded with 5-25% KOH is presented. The zeolites were characterized by PXRD, BET and CO2-TPD methods prior to their catalytic activity studies. Optimization of reaction conditions for transesterification was conducted in order to get highest possible yield of biodiesel. 1HNMR and FTIR analysis confirms the conversion of MI-oil to biodiesel. The physico-chemical properties of MI-biodiesel were found to be comparable with that of the standard biodiesel. The NaY and KOH/NaY zeolites were found to be efficient and reusable catalysts without much loss of their catalytic activity when used for several times in biodiesel production.Bangladesh J. Sci. Ind. Res. 50(4), 271-278, 2015
    Preview · Article · Dec 2015 · Bangladesh Journal of Scientific and Industrial Research
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    ABSTRACT: The classification of heart disease patients is of great importance in cardiovascular disease diagnosis. Numerous data mining techniques have been used so far by the researchers to aid health care professionals in the diagnosis of heart disease. For this task, many algorithms have been proposed in the previous few years. In this paper, we have studied different supervised machine learning techniques for classification of heart disease data and have performed a procedural comparison of these. We have used the C4.5 decision tree classifier, a naïve Bayes classifier, and a Support Vector Machine (SVM) classifier over a large set of heart disease data. The data used in this study is the Cleveland Clinic Foundation Heart Disease Data Set available at UCI Machine Learning Repository. We have found that SVM outperformed both naïve Bayes and C4.5 classifier, giving the best accuracy rate of correctly classifying highest number of instances. We have also found naïve Bayes classifier achieved a competitive performance though the assumption of normality of the data is strongly violated.Bangladesh J. Sci. Ind. Res. 50(4), 293-296, 2015
    Preview · Article · Dec 2015 · Bangladesh Journal of Scientific and Industrial Research
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    ABSTRACT: In this study, treatment of phosphogypsum (PG) with lime-water (LWT), sulphuric acid (SAT), a mixture of H2SO4 and HNO3 (AWT), PG-water (ST), and PG-limestone (LT) was attempted to purify PG and improve its quality so that it can be used for manufacture of ordinary Portland Cement (OPC). The treatment of PG removes P2O5, SO3, and MgO impurities into water-leachable phase. Chemical analysis of the treated PG and mechanical properties of OPC mortar after various treatment of PG established improvement of the quality of PG. The purified PG contain less impurities when compared with untreated PG. It was observed that the leachable of P2O5, SO3, and MgO in these samples ranged from 86% to 90%, 69% to 94%, 96% to 99%, respectively, can be achieved using these treatment processes. The major phases Alite (C3S), Belite (C2S), Aluminatetricalcic(C3A), and Tetra-calcium aluminoferrite (C4AF), and control ratios Lime Saturation factor (LSF), Aluminum/Iron ratio (AR), and Silica ratio (SR) were measured. These experimental results showed that the C3S, C3A and C4AF, C2S, LSF, AR, and SR contents fulfilled the requirement of the Jordan Standards and European Standards; hence treated PG can be replaced by natural gypsum. The X-ray diffraction analysis of OPC samples showed that C3S and C2S are major mineral phases, C3A and C4AF represent as minor constituents while the CaO and MgO represent as trace phases. The effect of treated PG on the mechanical properties of OPC mortar was investigated. The OPC produced with purified phosphogypsum were found to have strength properties similar to those produced from mineral gypsum thus fulfilling Jordan Standards and European Standards. The present study indicates that the use of PG in OPC manufacture can solve the waste disposal problem thus cleaning our environment at one hand, on the other hand it can save natural raw materials i.e gypsum.Bangladesh J. Sci. Ind. Res. 50(4), 241-250, 2015
    Preview · Article · Dec 2015 · Bangladesh Journal of Scientific and Industrial Research
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    ABSTRACT: There is a large variety and trademarks of vegetable oils in Bangladesh. The oils have characteristics very similar to each other and often cannot be classified by the observation of color, odor or taste. This paper proposes a vibrational spectroscopic method like FTIR in association with chemometric techniques to classify vegetable oils like: sunflower, mustard, sesame, soybean, castor, olive and palm oils from different manufacturers. In the FTIR spectra of oil, as information about fatty acid composition is concentrated in the range of 4400-200 cm-1 principal component analysis (PCA) was applied on the standardized full FTIR spectral data of this region for vegetable oils to totally capture the FTIR spectral pattern; seven varieties of vegetable oils could be successfully classified from their PCA scores. PCA of FTIR spectra of different known vegetable oils is used to determine the identity of several unknown vegetable oils. The unknowns are then analyzed, plotted, and identified based on their proximity to the known in principal component space. For the multivariate analysis PCA and soft independent modeling of class analogy (SIMCA) and support vector machines (SVMs) were used. 85% and 14% variability of data was explained by PC1 and PC2 respectively. PC1 has strong positive correlation with soybean, sunflower, palm and olive oil while strong negative correlation with mustard, castor and sesame oil. Soybean oils are positively and sesame oils are negatively correlated with PC2. Unknown oil samples can be identified properly by used supervised methods i.e. SIMCA, SVM by developing model with the help of PCA. The major interest of this method using chemometric analysis of spectral data is in their rapidity, since no chemical treatment of samples is required.Bangladesh J. Sci. Ind. Res. 50(4), 233-240, 2015
    Preview · Article · Dec 2015 · Bangladesh Journal of Scientific and Industrial Research
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    ABSTRACT: The reaction between tetrahexylammonium bromide and MoO3 produced a new bromo salt (bromotrioxomolybdate (VI)). (C6H13)4N [MoO3Br], characterized by IR, UV/Visible and 81Br-NMR techniques.Bangladesh J. Sci. Ind. Res. 50(4), 297-299, 2015
    Preview · Article · Dec 2015 · Bangladesh Journal of Scientific and Industrial Research
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    ABSTRACT: The obscurity of growing demand for the future generation (Future-Gen) spectrum is a concerned issue to resolve the perplexities and to seek for a more proficient manner in accessing the on hand radio spectrum bands and technologies. Frequency, space and time are the three dimensions of the radio spectrum where interference should not be happened if any one of these diverges between transmitters. Nowadays developing attention of the spectrum sharing technology and different strategies are being cultivated to permit more operators to exchange the spectrum in an opportunistic approach and simultaneously grow elevated to proficiency. The authors intentions aiming at this paper the entirely dispensation of the estimated radio spectrum resources among more interfering apparatuses that function in the similar space area are to make equal with the proposed paradigm from the idea of water filling. To alleviate the troublesome, using the application of the easy access spectrum (EAS) algorithm can easily be accomplished with the reciprocal intervention. Efficient use of the achieved spectrum and equal-smoothed allocation by redispensation in view of their particular QoS requisites are agile by this EAS paradigm. It is really allowed to identify the unused spectrum, which was primarily licensed, and to release it if is needed again.Bangladesh J. Sci. Ind. Res. 50(4), 279-284, 2015
    Preview · Article · Dec 2015 · Bangladesh Journal of Scientific and Industrial Research
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    ABSTRACT: The present study was conducted to evaluate the effects of respiratory gases on shelf life of fresh Oyster mushrooms. The complete randomize design was followed for the experiment. After sorting of collected cultivated mushrooms were packed in different polymeric packaging materials-polystyrene trays over wrapped with polyvinyl chloride (PVC) microfilm and polypropylene (PP) at refrigerated and ambient temperature condition for 12 days. Gas composition as CO2, O2, N2, concentration at 3 days intervals of the total 12 days duration also including sensorial quality were evaluated. CO2 contents were found to be increased but O2 contents was found to be reduced for both packaging materials within 3 days storage at ambient temperature. In refrigerator, oxygen content in both of trays increased sharply within 3 days of storage. Off flavor appeared strongly and started to spoil from third days after Oyster mushrooms packed in ambient temperature, which on the contrary was not detected in mushroom packed and stored until 12 days in refrigerator. Shortest storage period for a single day at ambient condition and extended period of 12 days self life was determined when mushrooms were stored in refrigerator in respect of sensorial quality in sealed polypropylene bag or in polystyrene trays.Bangladesh J. Sci. Ind. Res. 50(3), 205-210, 2015
    Preview · Article · Nov 2015 · Bangladesh Journal of Scientific and Industrial Research
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    ABSTRACT: The electrochemical redox behavior of transition metal ion, Cu(II) at different pH in acetate buffer solution has been investigated using cyclic voltammetric method at glassy carbon electrode (GCE). Cyclic voltammograms of Cu(II) show two cathodic and an anodic peaks those remain identical at various pH. The cyclic voltammetric response of the metal ion has been observed in presence of proton pump inhibitors (PPIs) such as omeprazole, pantoprazole, esomeprazole and rabeprazole at various proportions of metal ion and PPIs. The nature of cyclic voltammograms of Cu(II) has been changed dramatically in presence of the PPIs due to the strong interaction between metal ion and PPIs. Almost similar interaction was noticed for all the PPIs. However, the maximum interaction was found at 1:2 molar ratio of Cu(II) and PPIs. The result could provide deep insight into the interaction between various metal ions and the PPIs that have been taken quite regularly in human bodyBangladesh J. Sci. Ind. Res. 50(3), 219-226, 2015
    Preview · Article · Nov 2015 · Bangladesh Journal of Scientific and Industrial Research
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    ABSTRACT: Sesame is a well known oil seed crop in arid and semiarid region of Pakistan and its productivity is affected due to sensitiveness to water logging in the root zones. The experiment was conducted at research area of Agronomic Research Station, Bahawalpur during the year 2010 and 2011. The crop was sown by three different planting techniques i.e. flat sowing with 45cm apart rows, ridge sowing with 45cm apart, bed sowing with 60/30 cm i.e. 60 cm wide beds with 30 cm furrow between the beds. The data revealed that maximum number of plants wilted in flat planting as compared to other methods of planting were taken in this experiment. It was also recorded that bed planting at 90cm apart beds gave maximum grain yield of 843 kg ha-1 followed by ridge planting (seed spreading by broadcast and with augmented furrows) with a grain yield of 811 kg ha-1. The lowest yield was obtained from conventional method of sowing which gave 349 kg ha-1 grain yield. Water logging stress in the root zone can successfully be avoided by planting sesame on beds or ridges under climatic conditions of Bahawalpur.Bangladesh J. Sci. Ind. Res. 50(3), 193-198, 2015
    Preview · Article · Nov 2015 · Bangladesh Journal of Scientific and Industrial Research
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    ABSTRACT: Carbofuran is a kind of carbamate pesticide commonly used on major crops. The degradation of carbofuran by V (IV)/H2O2 system was investigated. The degradation system was strongly influenced by the pH, and initial concentration of VO2+. The degradation efficiency of carbofuran at the difference pH with the initial concentration of VO2+ in system was observed. An initial carbofuran concentration of 10 mg L–1 was 95% degraded within 10 min at pH 2.6 with original VO2+ concentration of 5×10–4 M. The decrease of TOC content was observed during the catalytic process and the removal percentage was obtained about 20% after 24 h. Furthermore, therefore, this process based on the catalytic reaction of VO2+ and VO2 +, and was responsible for the continuous production of hydroxyl radicals in such system. It has also proven that the degradation percentage increase when a little amount of L-ascorbic acid of 5×10–4 M was applied, the degradation increase up to 20% more at 10 min. A gas chromatography-mass spectrometry analysis showed the formation of seven products, on the basis of formation of time and its abounded, of all these intermediate products, a reaction mechanism path was submitted.Bangladesh J. Sci. Ind. Res. 50(3), 211-218, 2015
    Preview · Article · Nov 2015 · Bangladesh Journal of Scientific and Industrial Research
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    ABSTRACT: Cereal industry and its derived products have a large economic and social importance worldwide. Baking industries are extensively using wheat flour to produce various baked products. Therefore, in this investigation it is intended to study and determine proximate, physicochemical, functional properties of six brand of wheat flour in Bangladesh. The entire brand had moisture contents: 9.90-12.48%, protein: 8.67-12.47%, fat: 0.893-1.387% and ash content: 0.387-0.707%. The ACI brand had the highest amount of protein of 12.47% whereas Romoni brand had highest fat of 1.387%, fiber: 0.26%, gluten content: 15.34% and water absorption index of 1.9 g/g as compared to other brands. In addition, sodium and calcium content were higher in ACI brand whereas potassium content was higher in Romoni brand. Results showed that wheat flour from all brand could be used to make various type of baked products.Bangladesh J. Sci. Ind. Res. 50(3), 181-188, 2015
    Preview · Article · Nov 2015 · Bangladesh Journal of Scientific and Industrial Research