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Articles by S.A. Sulaiman
Total Records ( 8 ) for S.A. Sulaiman
  W.M. Ashagidigbi , S.A. Sulaiman and A. Adesiyan
  This study carried out an analysis of the determinants of efficiency among poultry egg farmers in Jos metropolis of Plateau state, Nigeria. A three stage random sampling technique was used in collecting the data used for this study. The study shows clearly that farm size and cost of drugs are the most important inputs in poultry egg production in the area. About 69% variation in the output of poultry egg production was found to be due to the technical inefficiency of the farmers. Technical efficiency of poultry egg farmers in the study area was found to be high with a mean of 94.2%. Further, analysis reveals that the intensity of output (total production), average price of feed, price of drugs, capital input and cost on utilities are the determinants of allocative efficiency while farming experience and access to credit facilities have significant impact on cost inefficiency. The study recommended the need for stakeholders in poultry egg production to intensify effort in ensuring farmers access to credit and extension services and also sensitize farmers with respect to the right level of input combinations that can improve efficiency level of poultry egg production in Nigeria.
  M.W. Kareem , Khairul Habib and S.A. Sulaiman
  This research reports a comparative study of the conventional single pass flat plate collector and the double pass solar collector filled with porous media such as gravel and metal chips at the lower channel of absorbing unit. The component materials, design, performance efficiencies, capabilities and the application of the solar collectors are presented to show various disparities that exist between the collectors. Emphasis was laid on the multi-pass approach as a gate way to future development on solar collectors.
  B.K.M. Mahgoub , S.A. Sulaiman and Z.A. Abdul Karim
  Biomass can be converted into a useful source of energy through gasification. The gasification product, which is a mixture of gases, is known as synthesis gas or syngas. The composition of syngas fluctuates due to many factors such as operational errors of the gasifier as well as the type of feedstock used or the feeding rate fluctuation. Therefore it is difficult to assess the effect of syngas composition and diesel replacement ratio to the performance when combusted in a compression ignition engine. In order to overcome this problem, controllable composition and conditions of imitated syngas is used in this study by selecting three compositions of syngas close to the real conditions. The objective of this study is to ascertain the possibility of using syngas as alternative to diesel fuel for an internal combustion engine while providing acceptable engine performance. The test results on syngas performance are compared with the results for diesel at engine speed of 2000 rpm. The results of the performance test of both fuels are examined in terms of the engine’s power output, exhaust temperature, brake specific fuel consumption, brake thermal efficiency and volumetric efficiency. It is generally shown that the use of syngas leads to lower brake power and brake thermal efficiency. In addition, different syngas compositions are shown to respond differently to the engine performance.
  F.M. Guangul , S.A. Sulaiman , M.N. Moni , S.M. Atnaw and R.E. Konda
  Malaysia has abundant, but unutilized oil palm fronds waste. The lack of knowledge on the characteristics of biomass is considered as one of the barriers for not utilizing it as a source of energy. Particularly, determining the moisture content of biomass and reducing it to the required level for the use of thermochemical processes, have remained as a major concern. In this study, the hygroscopic nature of oil palm fronds was investigated and the equilibrium moisture content in a specific laboratory room condition (80% relative humidity and 23°C room temperature) was identified. In the investigation the equilibrium moisture content of oil palm fronds was obtained to be 12% on wet basis. The variation of moisture content of different sections of oil palm fronds with particle density was also investigated and it was found that moisture content has positive correlation with density. For the same moisture content the middle part of the frond was found to be denser than the other sections and the hub section was found to be the least. To investigate the relationship of density with porosity, images of different sections of the frond were taken using scanning electron microscope. The image results showed that the porosity of the middle section is lower than the other two sections while that of the hub section is the highest.
  R.E. Konda , S.A. Sulaiman and Bambang Ariwahjoedi
  In present study, gasification of Oil Palm Fronds (OPF) is performed in a pilot-scale updraft gasifier. Gasification experiments were conducted at atmospheric pressure using air as oxidizing agent. The effects of equivalence ratio on temperature profile, gas composition and gas calorific value are studied. The equivalence ratios employed in this study are 0.18, 0.22, 0.29, 0.35 and 0.4. The results showed that the amount of combustible gases which are H2, CO and CH4 was found to be in the range of 16.79-33.9% of the total produced gases and the average composition of the syngas at an optimum equivalence ratio of 0.29 was found to be 20.10% CO, 10.41% CO2, 1.20% CH4 and 6.60% H2 with an average calorific value of 4.42 and 4.62 MJ Nm-3 as Low Heating Value (LHV) and Higher Heating Value (HHV). While the maximum molar ratios of H2/CO and CO/CO2 was found to be 0.3 and 2.51, respectively.
  L.F.B. Chin , S. Yusup , A. Al Shoaibi and S.A. Sulaiman
  The objective of this study is to investigate the thermal degradation behavior, degradation temperature and maximum degradation rate of rubber seed shell (RSS), high density polyethylene (HDPE) and binary mixture of RSS and HDPE in a weight ratio of 20/80 (HDPE/RSS) at different heating rates of 10, 20, 30 and 50 K min-1 within temperature range of 323-1200 K under non-isothermal gasification conditions in argon atmosphere at flowrate of 100 mL min-1 and steam flowrate of 300 μL h-1 using thermogravimetric (TGA) approach.
  S.A. Sulaiman and M.I. Anas
  In this study, pretreatment of oil palm fronds through torrefaction is studied. The process is carried out using a laboratory reactor. The conditions of torrefaction are varied and properties of the resulting products are observed, such as energy content and energy density. It is found that the calorific value of the torrefied fronds increases by about 50% as compared to those without torrefaction. Furthermore, the weight of the biomass decreases by about 75% due to evaporation of water and volatile matters. The resulting properties would ease transport and logistics and would result in better yields in combustion or gasification.
  M.Y. Naz , S.A. Sulaiman , S. Shukrullah and M. Sagir
  Counting the aerosol particles and identifying the air quality are reflectors for the efficiency of heating, ventilating and air-conditioning system (HVAC). HVAC is an important system especially in construction, agriculture, food processing and animal farming sectors. The objective of the presented research was to study the changes in local conditions and air quality in research laboratories of Universiti Teknologi PETRONAS (UTP) due to research activities and construction going on in the university suburbs. To achieve our objectives, we have measured the aerosol particles by using DUSTTRAK™ in an indoor (with and without stimulus) and outdoor environment. We even further investigated the air quality of indoor and outdoor environment, through measuring carbon dioxide concentration, ventilation rate, light intensity, relative humidity and temperature by using Telaire 7001. Data was collected from both devices, analyzed and discussed thoroughly in the discussion section.
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