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Search Results: 1 - 10 of 5274 matches for " Shaffi Kamal Rahman "
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Use of GIS Based Maps for Preliminary Assessment of Subsoil of Guwahati City  [PDF]
Binu Sharma, Shaffi Kamal Rahman
Journal of Geoscience and Environment Protection (GEP) , 2016, DOI: 10.4236/gep.2016.45011
Abstract: Guwahati, the major city in the North Eastern region of India is growing rapidly in every aspect with major infrastructures like sports complex, educational institutions, hospitals, flyovers, multiplex halls, etc. Knowledge of the subsurface soil condition is necessary to ensure the structural safety and serviceability of the above mentioned structures before any construction. Therefore, contour maps of Standard penetration test N value, ground water table and shear wave velocity map using Geographical Information System (GIS) platform will be of great help to the foundation designers at the initial stage for site selection and preliminary foundation design under static and seismic condition. Contour maps of Standard penetration test N value at different depth and average contour map of N value of Guwahati city have been prepared. Standard penetration Test N values and depth of water table were taken from a data base of 200 boreholes up to 30 meter depth to prepare N value contour map of Guwahati city. A regression equation between shear wave velocity Vs and Standard penetration test N value based on twenty seven previous similar correlations was also developed. This regression equation was used to determine shear wave velocity of Guwahati city. The average shear wave velocities for 30 m depth for all locations had been determined and used to generate map on (GIS) platform. Other subsurface geotechnical information of Guwahati city like soil classification and depth to water level from ground surface is also presented in the form of GIS based maps in order to form a data base.
Evaluating the Efficiency and Effectiveness of a Federated SSO Environment Using Shibboleth  [PDF]
Parves Kamal, Saad Mustafiz, Faisal Md. Abdur Rahman, Raihan Taher
Journal of Information Security (JIS) , 2015, DOI: 10.4236/jis.2015.63018
Abstract: The notion of this project is derived from our practical use of user authentication system namely Shibboleth at the University of Bedfordshire. It has been found that the University of Bedfordshire controls its various services including student portal Breo, Learning Resources and Student Email Access and others through the Shibboleth. Like the University of Bedfordshire the other Universities in the UK are also implementing the Shibboleth system in their access management control. Therefore, the researchers of this project have found it important to evaluate its efficiency and effectiveness of Shibboleth from different perspectives. In the first part of this paper it tries to explain the features of Shibboleth as SSO services and compares it with other SSO services like Athens, Kerberos, etc. Then in the middle section, the authors go through the steps of installation and configuration of the Shibboleth. In the end of the paper, based on the survey of real users of Shibboleth at the University of Bedfordshire, the authors give its insights on the effectiveness of the Shibboleth as SSO service. Throughout this investigation, the authors have applied a triangulation to find out user and service provider viewpoint about Shibboleth. Although there were some problems persisted, the authors also implemented the Shibboleth system successfully to figure out different problems, efficiency and effectiveness. The recommendations and conclusion have been provided at the end of this project.
Reflection of National and Cultural Identities in Foreign Schools of the Kurdistan Region/Iraq  [PDF]
Sangar Youssif Salih, Abdulsamih Muhammad Rahman, Jihad Kamal Othman
Creative Education (CE) , 2017, DOI: 10.4236/ce.2017.87082
Abstract: The Qualitative research method has been used to analyze 16 semi-structured interviews. This study focuses on the influences of foreign schools on Kurdish national and cultural identity in the Iraqi Kurdistan region. The study asks how the Kurdish national identity and its components have been reflected or dealt with in the schools’ curriculum. The study asks such questions as: Do foreign schools in the region have a special strategy to protect Kurdish national and cultural identity and do the students’ parents’ opinions matter in framing their children’s identity in the foreign schools? Through analyzing the data, the paper finds that learning second languages is important and can be useful for the future of the students. But, Kurdish as their mother language and as an important part of their identity won’t be protected and taken seriously to be a scientific language. We also find that hard science classes are taught more compared to the social and historical classes which include more subjects on Kurdish culture, history, and geography that can keep them updated about their national identity in general. Moreover, parents of the students who are enrolled into the foreign schools are not satisfied with the activities and practicing Kurdish national holidays. Creating a globalized generation is one of the positive goals of the schools which were identified from the study. They also do obey the laws that have been issued by the parliament of the Kurdistan region in general. Finally, family can be seen as one of the most influential tools for making or protecting national identity, which can also be seen as more important than the schools.
Influence of Bleaching Powder on the Quality of Giant Freshwater Prawn (Macrobrachium rosenbergii)  [PDF]
Md. Mizanur Rahman, Md. Shaheed Reza, Mohammed Nurul Absar Khan, Golam Mohammad Moshiur Rahman, Md. Nazrul Islam, Md. Kamal
Food and Nutrition Sciences (FNS) , 2013, DOI: 10.4236/fns.2013.49A2001

Calcium hypochlorite commercially known as bleaching powder is used as a bleaching agent in shrimp processing industries in many countries and known to effect biochemical alteration in shrimp muscle. Studies were, therefore, undertaken to determine their effect in different concentrations viz., 10, 20, 30, 40 and 50 ppm with different time intervals on the quality of head-on, headless shell-on and peeled giant freshwater prawn (Macrobrachium rosenbergii) by determining biochemical and organoleptic aspects. Myofibrillar protein solubility of fresh head-on, headless shell-on and peeled samples were 90.5%, 90% and 88%, respectively indicating a gradual decrease in protein solubility with increasing concentration of bleaching powder. Decrease in protein solubility was also higher in samples kept at longer duration in different concentration of bleaching powder. At a given concentration of 50 ppm for 30 min treatment, the loss of myofibrillar protein was higher (26.14%) in peeled samples than those of head-on and headless shell-on samples (20.44% and 21.11%). Shelf life of bleaching powder treated prawn samples was found to be reduced to 4 - 5 days in iced condition compared to 6 - 7 days for control samples. Peeled samples were also found to be more susceptible to bleaching powder than that of head-on and headless shell-on samples.

Vibration Fatigue Analysis of Two-stroke Free Piston Engine Using Frequency Response Approach
Md. Mustafidzur Rahman,Ahmad Kamal Ariffin
Jurnal Kejuruteraan , 2008,
Abstract: This paper describes a vibration fatigue analysis techniques to predict the fatigue life using the frequency response approach. The life prediction results are useful for improving the component design at a very early development stage. The finite element modelling and frequency response analysis have been performed using the finite element analysis software. In addition, the fatigue life prediction was carried out using both the time domain and frequency response method. From the results, it is observed that the Dirlik method gives the best comparable results pseudo-static time domain approach with the frequency response techniques. This paper also describes how this technique can be implemented in the finite element environment to rapidly identify critical areas in the structure. This approach is capable of determining premature products failure phenomena. Therefore, it can reduce time to market, improve product reliability and customer confidence.
Kamal Karmakar, Tanvir Muslim* and Md. Azizur Rahman
International Journal of Pharmaceutical Sciences and Research , 2013,
Abstract: Fatty acid composition of six different leafy vegetables of Bangladesh was investigated. The amount of bound fatty acids was found to be higher than the free fatty acids in all the leafy vegetables. Different fatty acids were identified and their relative proportions were determined by GLC from the leafy vegetables.
Clinico-Demographic Characteristics of Tuberculous Lymphadenitis: Experience of 50 Cases in Bangladesh  [PDF]
Mohammad Mahmudul Huda, Mohammad Taufiq, Md. Abdullah Yusuf, Mohammad Rezwanur Rahman, Ferdousy Begum, Mohammed Kamal
Journal of Tuberculosis Research (JTR) , 2016, DOI: 10.4236/jtr.2016.44024
Abstract: Background: Clinical and demographic features are important for the tuberculous lymphadenitis patients for treatment. Objective: The purpose of the present study was to see the clinical and demographic features of tuberculous lymphadenitis patients. Methodology: This cross-sectional study was done at the Department of Pathology at Banghabandhu Sheikh Mujib Medical University (BSMMU), Dhaka from January 2009 to March 2011 for a period of nearly two years. All the patients, irrespective of age and sex with the clinical features, suggestive of tuberculous lymphadenitis and later on, proved to be the same histologically, were selected for the study purposively. Relevant information was recorded in a prescribed data sheet and histomorphological findings were recorded accordingly. In cases where fresh specimen was available, caseous portion of lymph node was sent for culture. Fite Faraco staining was also done on lymph node sections in all cases. Result: A total number of 50 tuberculous lymphadenitis patients were recruited for this study. Among this study population, the age of cases ranged from 12 years to 65 years with a mean age of 26.22 ± 2.52 years. Male and female ratio was 1:1.38. Besides lymphadenopathy, 45 patients had low grade fever; 32 patients had weight loss and 18 patients had cough. Among 50 cases of lymph node tuberculosis cervical lymphadenopathy was 41 (82.0%) cases; 6 (12.0%) cases had supraclavicular lymphadenopathy; 2 (4.0%) cases had inguinal lymphadenopathy and 1 (2.0%) had axillary lymphadenopathy. The mean duration of presentation of lymphadenopathy with standard deviation was 7.06 ± 1.6 months. Thirty eight patients (76.0%) had lymphadenopathy for less than 12 months. Conclusion: In conclusion, young age group people are most commonly affected by tuberculous lymphadenitis with the predominance of female and most of them are presented with low grade fever and weight loss.
Investigation of Heavy Metals and Radionuclide’s Impact on Environment Due to The Waste Products of Different Iron Processing Industries in Chittagong, Bangladesh  [PDF]
Mohammad Saifur Rahman, Bijoy Sonker Barua, Md. Rezaul Karim, Masud Kamal
Journal of Environmental Protection (JEP) , 2017, DOI: 10.4236/jep.2017.89061
Abstract: The waste products, such as induction furnace slag, ladle furnace slag, air pollution control dust, and ramming mass collected from major iron processing industries in Chittagong, Bangladesh were analyzed for heavy metals and naturally radioactive elements. The concentrations of heavy metals Fe, Cr, Mn, Co, Cd, Ni, Pb, Cu and Zn were obtained from atomic absorption spectrophotometer (AAS) analysis with flame atomizer and the radioactivities due to 226Ra, 232Th and 40K were determined using high purity germanium (HPGe) detector of well shielded gamma-ray counting system. From the mean specific activities of the above three natural radionuclides in the investigated samples, the radium equivalent activity (Raeq) and the external hazard index (Hex) were calculated. The study showed the prospect of contamination of environmental materials (viz., soil, water, air, plant) due to many of these investigated elements by using the collected waste products in landfill. The chemical process of ion exchange indicates that the elevated heavy metals in soil can play a role to increase the natural radioactivity of the soil. The obtained Raeq as well as Hex indicated the insignificant radiation hazard due to the activities of primordial radionuclides found in the investigated samples.
Outcomes of Percutaneous Nephrolithotomy with or without Nephrostomy Tube: A Comparative Study  [PDF]
Mohammad Ibrahim Ali, Prodyut Kumar Saha, Shafiqul Alam Chowdhury, Nahid Kamal, Mostafiger Rahman, Sazzad Hossain, Ripan Debnath, Mohammad Saruar Alam, A. K. M. Shahidur Rahman, Kamrul Islam
Journal of Biosciences and Medicines (JBM) , 2019, DOI: 10.4236/jbm.2019.73006
Abstract: Objectives: To compare the outcomes of Percutaneous Nephrolithotomy (PCNL) with or without nephrostomy tube. Materials & Methods: This prospective comparative study intended to compare the outcomes between PCNL without nephrostomy tube and PCNL with nephrostomy tube. A total of 50 cases of renal stone disease planned for PCNL in Dhaka Medical College Hospital from July 2015 to June 2017, were included in this study according to the statistical calculation. Cases were randomly allocated to group A (PCNL without nephrostomy tube) and group B (PCNL with nephrostomy tube). Each group consisted of 25 patients. The outcome variables were post operative pain, requirement of analgesic, leakage of urine and post operative hospital stay. Data were analyzed and compared by statistical tests. Results: No significant differences were found regarding age (p = 0.95), sex (p = 0.55) and operation time (p = 0.36) between two groups. Post operative pain (p < 0.0007) and analgesic requirement (p < 0.0001) were less in group A than group B cases. Leakage of urine is higher in group B in comparison to group A (p < 0.0001). Post operative hospital stay is shorter in group A than group B cases which is statistically significant (p < 0.0001). Conclusions: Percutaneous nephrolithotomy without nephrostomy tube is better than percutaneous nephrolithotomy with nephrostomy tube in selective cases. It significantly reduces post operativepain, analgesic requirement and postoperative hospital stay. So percutaneous nephrolithotomy without nephrostomy tube is safe and effective.
Length-weight Relationship, Condition Factor and Harvesting Records of Silver Pomfret (Pampus argenteus) in the Southwestern Region of Bangladesh
M. Saifur Rahman,M. Aminur Rahman,M. Rafiqur Rahman,Dipak Kamal
Pakistan Journal of Biological Sciences , 2004,
Abstract: The length-weight relationship and condition factor of silver pomfret, (Pampus argenteus), collected from the southwestern region of Bangladesh (Khulna, Bagerhat and Pirojpur) were studied for a period of twelve months. In total, 317 fish (sex combined) were sampled in monthly intervals. Standard length-weight relationship of P. argenteus was obtained to be Log W = -1.1004 + 2.7931 Log L. The co-efficient of correlation (r) was found to be 0.989. Standard errors of Sx and Sy were 2.955 and 8.287, respectively. The calculated t-test also indicated that the correlation between length and weight was significant. The mean value of condition factor (K) was found to be 44.27. The peak and lean harvesting volumes of this fish were recorded during the winter and summer months, respectively
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