A Database Management System for Water Quality Control in A River Basin. Zarina Md. Ali and Salim... more A Database Management System for Water Quality Control in A River Basin. Zarina Md. Ali and Salim Said. ... Thamer Ahmed Mohammed, Flood Simulation Models for a River System in a Tropical Region :The Case of Linggi River, Malaysia , University of Putra Malaysia, 1998. ...
Abstract of Emerging Trends in Scientific Research, 2015
Climate variability has been an issue since it has cause extreme weather events such as flood, dr... more Climate variability has been an issue since it has cause extreme weather events such as flood, drought, and other catastrophic weather events especially at shoreline area. This study analysed trend variation in mean sea level rise fluctuation at two selected stations, which are Kukup, Johor and Tanjung Keling, Malacca based on observed long term sea level records (27 years). Seasonal Man-Kendall and 12-month moving average methods were selected to achieve this study. Result shows a trend for both stations with R2 = 0.06. The mean sea level rise to upward as 0.2772 cm/year at Tanjung Keling, Malacca and 0.3444 cm/year at Kukup, Johor. The trend analysis and forecasting show that both stations will experience a rise in sea level in 2050 and 2100.
The purpose of this study is to determine the noise exposure level among the workers that working... more The purpose of this study is to determine the noise exposure level among the workers that working in construction area. The study was carried out at construction sites and workshop. The data of noise level was collected by using Noise Dosimeter (SIE95) and analysed by dBTRAIT software. Result shows the maximum of noise dose (D) for Sri Gading and UTHM is approximately 43% and 28% respectively, while time weighted average noise level (TWA) for these sites is about 84 dB (A) and 80.8 dB (A) respectively. IKBN recorded maximum of noise dose (D) and average noise level (TWA) is 88 dB (A) and 75.8% respectively. The level of noise exposure at selected areas is in acceptable range based on regulation. As conclusion, workers who at the areas are advisable to wear hearing protection device when construction activities take place in order to civilize safety practice in the industry field.
International Journal of Sustainable Construction Engineering and Technology, Nov 14, 2022
Flood is defined as overflow of water from banks of drainage system that can cause destruction of... more Flood is defined as overflow of water from banks of drainage system that can cause destruction of property and loss of life. It affects psychological, financial and health (Raphael et al., 2000). Floodwaters that initially flow in subcritical state can overnight turn violent and cause great destruction. Scientists around the world have tried to find methods and solutions to overcome floodings. Urbanization process which has been continuing, unknowingly has changed natural nature of land and resulted in reduction in percentage of water infiltrating into soil. Planning, land reclamation control and more emphasis should be given to flood control at the source (Kundzewicz, 1999). It aims to ensure that all human activities will not burden the river's natural system.
Flash flood atBandar Maharani, Muaris a common occurrence. Although,numerous studies and continua... more Flash flood atBandar Maharani, Muaris a common occurrence. Although,numerous studies and continual improvement todrainagesystems havebeencarriedout, flash flood atBandar Maharani still persists. Aim ofthisstudyis toassess tidaleffect oneffectiveness of Bandar Maharani drainage system.80% of the 12.25 km area of Bandar Maharani consists of residentialsand commercial buildings.Capacity ofdrainage systemalong 15 major roads in Bandar Maharani has been evaluated.Peak flows due to 5, 10, 50 and 100-year ARI rainfall were considered. Hightide which occurred in 1999 has been used to investigate the effect of tideson capacity of drainalongJalan Bakri.Ithas been shown that high tidehasreducedas much as32% of capacity of drains alongJalanBakri, a major drainage system ofBandar Maharani.The effectof tides can reach as far as 3.687 km upstream. This means that whenhigh tides and heavy rainoccurconcurrently, capacity of drains alongJalanBakriwill be affected, thus leadto flash floods.
The determination of flow resistance for open channels remains a challenge in practices. In this ... more The determination of flow resistance for open channels remains a challenge in practices. In this research, an experimental study was carried out to investigate the hydraulic roughness characteristics in an open channel. The experimental flume (10 m length, 0.30 m width and 0.46 height) was carried out with two conditions ; contain gravel bed and without gravel bed (as controller). Blocks of concrete foam were fabricated and laid on the bed surface for providing uniformly roughened along the open channel. A velocity flow meter was used to quantify the average velocity, and other parameters such as cross-section, hydraulic radius, wetted perimeter, and channel slopes were also calculated. Finally, the flow resistance, n obtained using the flume with gravel bed surface is higher than the flume without gravel bed surface. The flow conditions were declared as subcritical as the Froude number is less than 1 for both conditions in the flume. As a conclusion, it was identified that the hydraulic roughness n, was influenced by the type bed roughness, flow rate and channel slope.
Urbanization in Malaysia has taken place very rapidly in the last ten years or more due to the ec... more Urbanization in Malaysia has taken place very rapidly in the last ten years or more due to the economic boom in the country especially in the Klang Valley. One direct consequence of rapid urbanization is the rapid increase in impervious areas such as roads and highways, pavement and parking lots. Industrial, commercial and domestics activities resulting in severe pollution and flood problems in urban areas. The main objective of this study is to determine the effect of urbanization on water quality and discharge in urban area. The Taman Mayang catchment area was selected as a case study. Water quality analysis was done on the water with in-situ measurements and laboratory analysis. The parameters are pH, Temperature (Temp), Turbidity, Electric Conductivity (EC), Dissolved 'Oxygen (DO), Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Ammoniacal Nitrogen (AN), Suspended Solid (SS), Sulphate (S04), Chromium (Cr), Boron (B), Sulphide (S2), Copper (Cu), Iron (Fe), Chlorine (Cl), Cyanide (Cn), Nickel (Ni), Phosphate (P04), Mercury (Hg), Cadmium (Cd), Arsenic (As), Manganese (Mn), Zinc (Zn), Plumbum (Pb), Stanum (Sn) and Phenol. Two methods were used to estimate Water Quality Index (WQI), which were Harkins' WQI and DOE-WQI. Based on results for this study, the water quality of the river in Taman Mayang can be classified into Class III and IV by on overall river classification based on Harkins' WQI and DOE-WQI. The study showed that the Taman Mayang discharge was polluted and needs intensive treatment to clean the river. For an urban area, Taman Mayang has BOD value ranging between 3.5 - 7.0 mg/l and COD value which ranges from 20.0- 49.0 mg/l. The pollution sources were identified to originate from the industrial and residential areas. The other parameters did not have serious effect to the environment and human population. From the hydrologic study, rainfall intensity was found to be 86.36 mm/hr for 2 year return period, 134.62 mm/hr for 10 year return period and 187.96 mm/hr for 100 year return period. The total discharge from Taman Mayang were 20.51 m3/s for 2 year return period, 31.87 m3/s for 10 year return period and 44.64 m3/s for 100 year return period. The results of this study can be used as a basis for future studies on water quality on the similar urbanized areas in Malaysia.
Pantai Johor telah direkodkan mengalami hakisan pada tahun 1986 sebanyak 56.3% (113.7 km). Teluk ... more Pantai Johor telah direkodkan mengalami hakisan pada tahun 1986 sebanyak 56.3% (113.7 km). Teluk Wawasan di Batu Pahat merupakan kawasan yang teruk terhakis sehingga kehilangan sebahagian hutan paya bakaunya. Kajian awalan ini dilakukan untuk menentukan morfologi dan taburan sedimen sepanjang pesisiran Teluk Wawasan. Lima belas (15) titik pensampelan telah dikenalpasti bermula dari garisan air surut paling rendah hingga 1 meter ke daratan, sepanjang 2.6 km di pantai Teluk Wawasan. Sampel sedimen telah diambil secara strata pugak dan dianalisis untuk mendapatkan ciri-ciri tanah dan pengkelasan saiz zarah. Menurut pengkelasan USCS, sedimen di Teluk Wawasan boleh disifatkan sebagai tanah liat berkelodak, dengan kandungan organik diantara 3% - 13%. Pekali keseragaman Cu dan kelengkungan Cc menunjukkan gred taburan tidak seragam mempunyai keplastikan yang sangat rendah. Pengangkutan bahan organik dari laut ke daratan menyebabkan kandungan organik tanah meningkat.
The behaviour and load of sediment transported along Sungai Punggor have been investigated in thi... more The behaviour and load of sediment transported along Sungai Punggor have been investigated in this research project. The transport of sediment in Punggor river and its estuary is studied to characterize the process of sedimentation. Sedimentation is an issue for Punggor river as fishing related activities are one of the activities carriedout at its river mouth. Characterized as agricultueal and suburban residential land, Punggor river reach have the roughness coefficient in ranging from 0.028 to 0.073 and the roughness coefficient at its estuary ranging from 0.072 to 0.107. From the sieve analysis, the sediment at Punggor river and estuary are classified as highly plasticity clay with high content of fine sand. The Atterberg tests results supported the sieve Z analysis classification with liquid index LI = 1.08 and plastic index PI = 18, denoting highly liquefied clay. The critical shear stress computed using Shields equation and Smerdon curve are 0.0156 NIrn2 and 1.97 Nlm2, respectively. Smerdon critical shear stress gives critical shear velocity Uc of 0.044 mls. Study has found that relationship between suspended solid and turbidity; and flow rate and sediment load are directly proportional where R2 equal to 0.96 and 0.72 respectively. The rate of sediment load flushed into the estuary of Punggor is between 0.027 m31s to 1.47 m31s.
Such drainage channels in the State of Johor, especially located in rural area are facing sedimen... more Such drainage channels in the State of Johor, especially located in rural area are facing sedimentation seriously due to unlined channel. A field research at Parit Botak Channel has been carried out to study the sediment load and its transport during tides effect. Samples were made along the channel from upstream up to estuary yielding that most of soils are marine clay (BS 1201: Part 2:1973), flow of channel varies from 9.7 to 89.91 m3/s, correlation between turbidity and suspended sediment R2 is 90%, and correlation between flow rate and sediment transport R2 is bigger than 92%.
The purpose of this paper was to discuss rainwater quality based on chemical oxygen demand (COD) ... more The purpose of this paper was to discuss rainwater quality based on chemical oxygen demand (COD) concentration and to map COD spatial distribution for an area of approximately 3.5 km x 3.0 km of Parit Raja, which is located at Batu Pahat, Johor, Malaysia. Rainwater samples were collected four times from June of 2007 to July of 2007 at eleven sampling stations. The measured COD concentration data were averaged and transformed into their common logarithms and then mapped through the application of kriging interpolation technique. The measured COD concentration was found ranging from 5.3 mg/L to 40.7 mg/L. The areas that received rainwater with high and low COD concentration were able to be identified and the presence of sources of rainwater contamination was suggested from observation on the developed COD spatial distribution map.
Coastal erosion impinges directly on many aspects especially tourism sector. Due to this problem,... more Coastal erosion impinges directly on many aspects especially tourism sector. Due to this problem, a study was carried out at Kampung Sungai Lurus shoreline to determine sediment shear stresses and characteristics of sediment load. Parameters needed were ...
... 1zarinaa@uthm.edu.my, 2ashykinsaib@yahoo.com, Roughness elements are essential parts of natur... more ... 1zarinaa@uthm.edu.my, 2ashykinsaib@yahoo.com, Roughness elements are essential parts of natural ecological system for most environmental standpoint. ... D ep th ,y (m ) Legend: Q=0.02m3/s Q=0.025 Q=0.03m3/s Q=0.035m3/s (c) 1:300 (a). flows through gravel bed 0 0.06 ...
... Zarina Md. Ali*, Che Faridah Che Mohd Yusoff & Sabariah Musa Faculty of Civil and Environ... more ... Zarina Md. Ali*, Che Faridah Che Mohd Yusoff & Sabariah Musa Faculty of Civil and Environmental Engineering University Tun Hussien Onn Malaysia, 86400 Parit Raja, Batu Pahat, Johor, Malaysia. *Email: zarinaa@uthm.edu.my ABSTRACT. ...
Journal of Technical Education and Training, Jul 24, 2012
This paper presents an application of continuous quality improvement (CQI) process for a typical ... more This paper presents an application of continuous quality improvement (CQI) process for a typical engineering course using constructive alignment. The performance measures are the course learning outcomes (CLO) attainment and overall course grades which combines the marks obtained in the tests, assignments and final examination. Tests and final examination represent the cognitive assessment while assignments represent the generic skills assessment measured using rubrics. Pareto diagram is used to analyze the CLO attainment data resulting from tests, assignments and final exam marks. Possible causes related to low CLO attainment are explored using the QC tool of Ishikawa diagram. From detail studies on both Pareto and Ishikawa diagrams, CQI activities based on constructive alignment are then drafted and implemented to the course. The CQI implementation shows significant improvements to the CLO attainments.
Characteristics of rainfall was influenced by climate variability. Occurrence of extreme events d... more Characteristics of rainfall was influenced by climate variability. Occurrence of extreme events due to climate variability may lead to flash floods or monsoonal flooding. This paper discusses on characteristics and trend of monthly and annual rainfall at Johor Bahru and Kota Bharu. Daily rainfall observations at the stations that spans over 13 years, i.e. from year 2004 to year 2016 was used. Minimum and maximum total annual rainfall recorded at Johor Bahru and Kota Bharu are 1708.0 mm and 3455.5 mm, and 1036.3 mm and 3037.0 mm, respectively. Mann-Kendall test has showed that the monthly and annual rainfall trends at both stations are insignificant. Longer period of rainfall observations should be considered to obtain more significant trends. The longest dry and wet days within a month observed over the 13-year rainfall are 26 days and 17 days at Johor Bahru, and 29 days and 25 days at Kota Bharu. Both Johor Bahru and Kota Bharu receives higher rain during the beginning of north-eas...
The purpose of this study is to determine the noise exposure level among the workers that working... more The purpose of this study is to determine the noise exposure level among the workers that working in construction area. The study was carried out at construction sites and workshop. The data of noise level was collected by using Noise Dosimeter (SIE95) and analysed by dBTRAIT software. Result shows the maximum of noise dose (D) for Sri Gading and UTHM is approximately 43% and 28% respectively, while time weighted average noise level (TWA) for these sites is about 84 dB (A) and 80.8 dB (A) respectively. IKBN recorded maximum of noise dose (D) and average noise level (TWA) is 88 dB (A) and 75.8% respectively. The level of noise exposure at selected areas is in acceptable range based on regulation. As conclusion, workers who at the areas are advisable to wear hearing protection device when construction activities take place in order to civilize safety practice in the industry field.
A Database Management System for Water Quality Control in A River Basin. Zarina Md. Ali and Salim... more A Database Management System for Water Quality Control in A River Basin. Zarina Md. Ali and Salim Said. ... Thamer Ahmed Mohammed, Flood Simulation Models for a River System in a Tropical Region :The Case of Linggi River, Malaysia , University of Putra Malaysia, 1998. ...
Abstract of Emerging Trends in Scientific Research, 2015
Climate variability has been an issue since it has cause extreme weather events such as flood, dr... more Climate variability has been an issue since it has cause extreme weather events such as flood, drought, and other catastrophic weather events especially at shoreline area. This study analysed trend variation in mean sea level rise fluctuation at two selected stations, which are Kukup, Johor and Tanjung Keling, Malacca based on observed long term sea level records (27 years). Seasonal Man-Kendall and 12-month moving average methods were selected to achieve this study. Result shows a trend for both stations with R2 = 0.06. The mean sea level rise to upward as 0.2772 cm/year at Tanjung Keling, Malacca and 0.3444 cm/year at Kukup, Johor. The trend analysis and forecasting show that both stations will experience a rise in sea level in 2050 and 2100.
The purpose of this study is to determine the noise exposure level among the workers that working... more The purpose of this study is to determine the noise exposure level among the workers that working in construction area. The study was carried out at construction sites and workshop. The data of noise level was collected by using Noise Dosimeter (SIE95) and analysed by dBTRAIT software. Result shows the maximum of noise dose (D) for Sri Gading and UTHM is approximately 43% and 28% respectively, while time weighted average noise level (TWA) for these sites is about 84 dB (A) and 80.8 dB (A) respectively. IKBN recorded maximum of noise dose (D) and average noise level (TWA) is 88 dB (A) and 75.8% respectively. The level of noise exposure at selected areas is in acceptable range based on regulation. As conclusion, workers who at the areas are advisable to wear hearing protection device when construction activities take place in order to civilize safety practice in the industry field.
International Journal of Sustainable Construction Engineering and Technology, Nov 14, 2022
Flood is defined as overflow of water from banks of drainage system that can cause destruction of... more Flood is defined as overflow of water from banks of drainage system that can cause destruction of property and loss of life. It affects psychological, financial and health (Raphael et al., 2000). Floodwaters that initially flow in subcritical state can overnight turn violent and cause great destruction. Scientists around the world have tried to find methods and solutions to overcome floodings. Urbanization process which has been continuing, unknowingly has changed natural nature of land and resulted in reduction in percentage of water infiltrating into soil. Planning, land reclamation control and more emphasis should be given to flood control at the source (Kundzewicz, 1999). It aims to ensure that all human activities will not burden the river's natural system.
Flash flood atBandar Maharani, Muaris a common occurrence. Although,numerous studies and continua... more Flash flood atBandar Maharani, Muaris a common occurrence. Although,numerous studies and continual improvement todrainagesystems havebeencarriedout, flash flood atBandar Maharani still persists. Aim ofthisstudyis toassess tidaleffect oneffectiveness of Bandar Maharani drainage system.80% of the 12.25 km area of Bandar Maharani consists of residentialsand commercial buildings.Capacity ofdrainage systemalong 15 major roads in Bandar Maharani has been evaluated.Peak flows due to 5, 10, 50 and 100-year ARI rainfall were considered. Hightide which occurred in 1999 has been used to investigate the effect of tideson capacity of drainalongJalan Bakri.Ithas been shown that high tidehasreducedas much as32% of capacity of drains alongJalanBakri, a major drainage system ofBandar Maharani.The effectof tides can reach as far as 3.687 km upstream. This means that whenhigh tides and heavy rainoccurconcurrently, capacity of drains alongJalanBakriwill be affected, thus leadto flash floods.
The determination of flow resistance for open channels remains a challenge in practices. In this ... more The determination of flow resistance for open channels remains a challenge in practices. In this research, an experimental study was carried out to investigate the hydraulic roughness characteristics in an open channel. The experimental flume (10 m length, 0.30 m width and 0.46 height) was carried out with two conditions ; contain gravel bed and without gravel bed (as controller). Blocks of concrete foam were fabricated and laid on the bed surface for providing uniformly roughened along the open channel. A velocity flow meter was used to quantify the average velocity, and other parameters such as cross-section, hydraulic radius, wetted perimeter, and channel slopes were also calculated. Finally, the flow resistance, n obtained using the flume with gravel bed surface is higher than the flume without gravel bed surface. The flow conditions were declared as subcritical as the Froude number is less than 1 for both conditions in the flume. As a conclusion, it was identified that the hydraulic roughness n, was influenced by the type bed roughness, flow rate and channel slope.
Urbanization in Malaysia has taken place very rapidly in the last ten years or more due to the ec... more Urbanization in Malaysia has taken place very rapidly in the last ten years or more due to the economic boom in the country especially in the Klang Valley. One direct consequence of rapid urbanization is the rapid increase in impervious areas such as roads and highways, pavement and parking lots. Industrial, commercial and domestics activities resulting in severe pollution and flood problems in urban areas. The main objective of this study is to determine the effect of urbanization on water quality and discharge in urban area. The Taman Mayang catchment area was selected as a case study. Water quality analysis was done on the water with in-situ measurements and laboratory analysis. The parameters are pH, Temperature (Temp), Turbidity, Electric Conductivity (EC), Dissolved 'Oxygen (DO), Biochemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD), Ammoniacal Nitrogen (AN), Suspended Solid (SS), Sulphate (S04), Chromium (Cr), Boron (B), Sulphide (S2), Copper (Cu), Iron (Fe), Chlorine (Cl), Cyanide (Cn), Nickel (Ni), Phosphate (P04), Mercury (Hg), Cadmium (Cd), Arsenic (As), Manganese (Mn), Zinc (Zn), Plumbum (Pb), Stanum (Sn) and Phenol. Two methods were used to estimate Water Quality Index (WQI), which were Harkins' WQI and DOE-WQI. Based on results for this study, the water quality of the river in Taman Mayang can be classified into Class III and IV by on overall river classification based on Harkins' WQI and DOE-WQI. The study showed that the Taman Mayang discharge was polluted and needs intensive treatment to clean the river. For an urban area, Taman Mayang has BOD value ranging between 3.5 - 7.0 mg/l and COD value which ranges from 20.0- 49.0 mg/l. The pollution sources were identified to originate from the industrial and residential areas. The other parameters did not have serious effect to the environment and human population. From the hydrologic study, rainfall intensity was found to be 86.36 mm/hr for 2 year return period, 134.62 mm/hr for 10 year return period and 187.96 mm/hr for 100 year return period. The total discharge from Taman Mayang were 20.51 m3/s for 2 year return period, 31.87 m3/s for 10 year return period and 44.64 m3/s for 100 year return period. The results of this study can be used as a basis for future studies on water quality on the similar urbanized areas in Malaysia.
Pantai Johor telah direkodkan mengalami hakisan pada tahun 1986 sebanyak 56.3% (113.7 km). Teluk ... more Pantai Johor telah direkodkan mengalami hakisan pada tahun 1986 sebanyak 56.3% (113.7 km). Teluk Wawasan di Batu Pahat merupakan kawasan yang teruk terhakis sehingga kehilangan sebahagian hutan paya bakaunya. Kajian awalan ini dilakukan untuk menentukan morfologi dan taburan sedimen sepanjang pesisiran Teluk Wawasan. Lima belas (15) titik pensampelan telah dikenalpasti bermula dari garisan air surut paling rendah hingga 1 meter ke daratan, sepanjang 2.6 km di pantai Teluk Wawasan. Sampel sedimen telah diambil secara strata pugak dan dianalisis untuk mendapatkan ciri-ciri tanah dan pengkelasan saiz zarah. Menurut pengkelasan USCS, sedimen di Teluk Wawasan boleh disifatkan sebagai tanah liat berkelodak, dengan kandungan organik diantara 3% - 13%. Pekali keseragaman Cu dan kelengkungan Cc menunjukkan gred taburan tidak seragam mempunyai keplastikan yang sangat rendah. Pengangkutan bahan organik dari laut ke daratan menyebabkan kandungan organik tanah meningkat.
The behaviour and load of sediment transported along Sungai Punggor have been investigated in thi... more The behaviour and load of sediment transported along Sungai Punggor have been investigated in this research project. The transport of sediment in Punggor river and its estuary is studied to characterize the process of sedimentation. Sedimentation is an issue for Punggor river as fishing related activities are one of the activities carriedout at its river mouth. Characterized as agricultueal and suburban residential land, Punggor river reach have the roughness coefficient in ranging from 0.028 to 0.073 and the roughness coefficient at its estuary ranging from 0.072 to 0.107. From the sieve analysis, the sediment at Punggor river and estuary are classified as highly plasticity clay with high content of fine sand. The Atterberg tests results supported the sieve Z analysis classification with liquid index LI = 1.08 and plastic index PI = 18, denoting highly liquefied clay. The critical shear stress computed using Shields equation and Smerdon curve are 0.0156 NIrn2 and 1.97 Nlm2, respectively. Smerdon critical shear stress gives critical shear velocity Uc of 0.044 mls. Study has found that relationship between suspended solid and turbidity; and flow rate and sediment load are directly proportional where R2 equal to 0.96 and 0.72 respectively. The rate of sediment load flushed into the estuary of Punggor is between 0.027 m31s to 1.47 m31s.
Such drainage channels in the State of Johor, especially located in rural area are facing sedimen... more Such drainage channels in the State of Johor, especially located in rural area are facing sedimentation seriously due to unlined channel. A field research at Parit Botak Channel has been carried out to study the sediment load and its transport during tides effect. Samples were made along the channel from upstream up to estuary yielding that most of soils are marine clay (BS 1201: Part 2:1973), flow of channel varies from 9.7 to 89.91 m3/s, correlation between turbidity and suspended sediment R2 is 90%, and correlation between flow rate and sediment transport R2 is bigger than 92%.
The purpose of this paper was to discuss rainwater quality based on chemical oxygen demand (COD) ... more The purpose of this paper was to discuss rainwater quality based on chemical oxygen demand (COD) concentration and to map COD spatial distribution for an area of approximately 3.5 km x 3.0 km of Parit Raja, which is located at Batu Pahat, Johor, Malaysia. Rainwater samples were collected four times from June of 2007 to July of 2007 at eleven sampling stations. The measured COD concentration data were averaged and transformed into their common logarithms and then mapped through the application of kriging interpolation technique. The measured COD concentration was found ranging from 5.3 mg/L to 40.7 mg/L. The areas that received rainwater with high and low COD concentration were able to be identified and the presence of sources of rainwater contamination was suggested from observation on the developed COD spatial distribution map.
Coastal erosion impinges directly on many aspects especially tourism sector. Due to this problem,... more Coastal erosion impinges directly on many aspects especially tourism sector. Due to this problem, a study was carried out at Kampung Sungai Lurus shoreline to determine sediment shear stresses and characteristics of sediment load. Parameters needed were ...
... 1zarinaa@uthm.edu.my, 2ashykinsaib@yahoo.com, Roughness elements are essential parts of natur... more ... 1zarinaa@uthm.edu.my, 2ashykinsaib@yahoo.com, Roughness elements are essential parts of natural ecological system for most environmental standpoint. ... D ep th ,y (m ) Legend: Q=0.02m3/s Q=0.025 Q=0.03m3/s Q=0.035m3/s (c) 1:300 (a). flows through gravel bed 0 0.06 ...
... Zarina Md. Ali*, Che Faridah Che Mohd Yusoff & Sabariah Musa Faculty of Civil and Environ... more ... Zarina Md. Ali*, Che Faridah Che Mohd Yusoff & Sabariah Musa Faculty of Civil and Environmental Engineering University Tun Hussien Onn Malaysia, 86400 Parit Raja, Batu Pahat, Johor, Malaysia. *Email: zarinaa@uthm.edu.my ABSTRACT. ...
Journal of Technical Education and Training, Jul 24, 2012
This paper presents an application of continuous quality improvement (CQI) process for a typical ... more This paper presents an application of continuous quality improvement (CQI) process for a typical engineering course using constructive alignment. The performance measures are the course learning outcomes (CLO) attainment and overall course grades which combines the marks obtained in the tests, assignments and final examination. Tests and final examination represent the cognitive assessment while assignments represent the generic skills assessment measured using rubrics. Pareto diagram is used to analyze the CLO attainment data resulting from tests, assignments and final exam marks. Possible causes related to low CLO attainment are explored using the QC tool of Ishikawa diagram. From detail studies on both Pareto and Ishikawa diagrams, CQI activities based on constructive alignment are then drafted and implemented to the course. The CQI implementation shows significant improvements to the CLO attainments.
Characteristics of rainfall was influenced by climate variability. Occurrence of extreme events d... more Characteristics of rainfall was influenced by climate variability. Occurrence of extreme events due to climate variability may lead to flash floods or monsoonal flooding. This paper discusses on characteristics and trend of monthly and annual rainfall at Johor Bahru and Kota Bharu. Daily rainfall observations at the stations that spans over 13 years, i.e. from year 2004 to year 2016 was used. Minimum and maximum total annual rainfall recorded at Johor Bahru and Kota Bharu are 1708.0 mm and 3455.5 mm, and 1036.3 mm and 3037.0 mm, respectively. Mann-Kendall test has showed that the monthly and annual rainfall trends at both stations are insignificant. Longer period of rainfall observations should be considered to obtain more significant trends. The longest dry and wet days within a month observed over the 13-year rainfall are 26 days and 17 days at Johor Bahru, and 29 days and 25 days at Kota Bharu. Both Johor Bahru and Kota Bharu receives higher rain during the beginning of north-eas...
The purpose of this study is to determine the noise exposure level among the workers that working... more The purpose of this study is to determine the noise exposure level among the workers that working in construction area. The study was carried out at construction sites and workshop. The data of noise level was collected by using Noise Dosimeter (SIE95) and analysed by dBTRAIT software. Result shows the maximum of noise dose (D) for Sri Gading and UTHM is approximately 43% and 28% respectively, while time weighted average noise level (TWA) for these sites is about 84 dB (A) and 80.8 dB (A) respectively. IKBN recorded maximum of noise dose (D) and average noise level (TWA) is 88 dB (A) and 75.8% respectively. The level of noise exposure at selected areas is in acceptable range based on regulation. As conclusion, workers who at the areas are advisable to wear hearing protection device when construction activities take place in order to civilize safety practice in the industry field.
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