The Study on the Accuracy of Classifiers for Water Quality Application

Rosaida Rosly,Mokhairi Makhtar,Mohd Khalid Awang,M Nordin A Rahman,Mustafa Mat Deris 보안공학연구지원센터 2015 International Journal of u- and e- Service, Scienc Vol.8 No.3

Dirty water is the world's biggest health risk. When water from rain roads into rivers, it picks up toxic chemicals, dirt, trash and disease-carrying organisms along the way. Many of our water resources lack basic protections, making them vulnerable to pollution from factory farms and industrial plants. Due to that, a classification model is needed to present the quality of the water environment. In this paper, the data mining techniques are used in this research by applying the classification method for water quality application. Various classifiers were studied in order to find the most accurate classifier for the dataset. This paper presents the comparison of accuracies for the five classifiers (NB, MLP, J48, SMO, and IBk) based on a 10-fold cross validation as a test method with respect to water quality from the datasets of Kinta River, Perak Malaysia. This study also explores which classifier is suitable to classify the dataset. The selected attributes used in this study were: DO Sat, DO Mgl, BOD Mgl, COD Mgl, TS Mgl, DO Index, AN Index, SS Index, Class, and Degree of pollution. The data consisted of 166 instances and obtained from the East Coast Environmental Research Institute (ESERI) of Universiti Sultan Zainal Abidin (UniSZA). The result of MLP and IBk performed better than other classifiers for Kinta River dataset because these classifiers showed the highest accuracy with the same percentage of 91.57%. In the future, we will propose the multiclassifier approach by introducing a fusion at a classification level between these classifiers to get a higher accuracy of classification.

Synthesis and characterization of multilayered sol–gel based plastic-clad fiber optic pH sensor

Shumaila Islam,Rosly Abdul Rahman,Zulkafli Bin Othaman,Saira Riaz,Shahzad Naseem 한국공업화학회 2015 Journal of Industrial and Engineering Chemistry Vol.23 No.-

The fabrication and characterization of an optical fiber pH sensor for the detection range 3–11 are described. The sensing element consists of a combination of indicators encapsulated in mesoporous surfactant based hybrid matrix, which are deposited onto an uncladed plastic optical fiber. Stable, dense and uniform sol–gel cladding with more than 90% transparency in the visible range are observed. Roughness value 9.7–6.57 nm is obtained by AFM. Film thickness, refractive index, and porosity are found to vary with number of coatings, 70% porosity is determined with 116 nm thickness. The response of the sensor with third layer is observed in acid and basic medium.

Synthesis and characterization of hybrid matrix with encapsulated organic sensing dyes for pH sensing application

Shumaila Islam,Rosly Rahman,ZULKAFLI OTHAMAN,Saira Riaz,Shahzad Naseem 한국공업화학회 2014 Journal of Industrial and Engineering Chemistry Vol.20 No.6

Films of multi-organic indicators, encapsulated in silica–titania hybrid matrix with CTAB, have beensynthesized using sol–gel dip coating method. Two types of stable,dense and uniform matrices wereannealed at a 150 ℃ within two time intervals 1 h and 2 h by using 0.1 M and 0.5 M indicatorconcentrations. Nanoparticles are uniformly distributed with size in the range from 15–28 nm. Matriceshave high surface area (418.18–441.30 m2/g), which has more capability to sense the broader pH range. Spectroscopic studies showed the establishment of heterogeneous chemical bonding which indicative ofstability of matrices with 69% porosity. The response of the sensor is optimum at pH 9.

Acute and subacute dermal toxicity of ethanolic extract of Melastoma malabathricum leaves in Sprague-Dawley rats

Reduan Farhan Hanif,Shaari Rosly Mohd,Sayuti Nurul Syahirah Ahmad,Mustapha Noordin Mohamed,Abu Bakar Md Zuki,Sithambaram Shanmugavelu,Hamzah Hazilawati 한국독성학회 2020 Toxicological Research Vol.36 No.3

Melastoma malabathricum is a well-known herb in Malaysia where it being used in various ways for treatment of different diseases and ailments including skin problems. The study aims to investigate acute and subacute dermal toxicity of ethanolic extract of M. malabathricum leaves following to a single or repeated doses exposure. A total of 30 female Sprague-Dawley rats were grouped into 5 groups (n = 6 per group) for both acute and subacute toxicity study. The duration for each study was determined at 14 days for acute toxicity and 28 days for subacute toxicity. The rats were topically applied with the plant extract at three different doses; 2.5%, 5.0% and 10.0% on the shaved area of dorsal skin. For acute toxicity study, rats in all three groups received single application of the extract on the first day of the experimental period, while rats in subacute toxicity study were topically applied with the extract once daily for 28 days. Throughout the respective 14-day and 28-day study periods, all rats were monitored for any changes in their physical appearance and behavioural patterns that might develop due to toxic effects of the plant. There were no mortality or abnormal physical appearance, and physiological and behavioural changes observed in all rats in both studies. Body weights, kidney and liver weights, and both haematology and serum biochemistry results showed no significant (p > 0.05) differences between all groups in both studies. All of the findings were supported by normal macroscopic and microscopic architectures of liver, kidneys and skin of all rats applied topically with the extract. This study suggests that topical application of M. malabathricum leaf ethanolic extract at 2.5%, 5% and 10% does not induce acute and subacute adverse effects on the skin or systemic toxic reactions in rats.

Subacute Oral Toxicity Assesment of Ethanol Extract of Mariposa christia vespertilionis Leaves in Male Sprague Dawley Rats

Syahirah Ahmad Sayuti Nurul,Hamzah Hazilawati,Rosly Shaari Mohd,Farhan Hanif Reduan Mohd,Mohamed Mustapha Noordin,Md Esa Norhaizan 한국독성학회 2018 Toxicological Research Vol.34 No.2

The term Butterfly tea refers to decoction of Mariposa christia vespertilionis leaves which is widely consumed by cancer patients throughout Malaysia and has gained a huge popularity among Malaysians, not only cancer patients but also researchers to discover the real potential of this plant. Herein, the study is aimed at evaluating the possible toxicity in 28-day subacute oral toxicity of ethanolic extract M. christia vespertilionis in male Sprague Dawley rats. The 28-day subacute toxicity study was conducted to detect the no-observed adverse effect level (NOAEL). In this study, a total of 30 rats were divided into the control, 5% DMSO (vehicle), low dose (75 mg/kg), medium dose (125 mg/kg) and high dose (250 mg/kg) groups. The extract was administered daily from day 1 until day 28. At the end of the study, the animals were humanely sacrificed and assessed for the effect extract of Mariposa christia vespertilionis leaves on body weight and relative organ weights and haematological, biochemical and histopathological parameters. The haematological and serum biochemical parameters for the assessment of kidney and liver injuries were carried out. Results of haematological and serum biochemistry results showed no changes in the control and treated groups. In the histopathology, evaluation of kidney tissues in all treated groups showed no significant (p > 0.05) lesions. In contrast to kidney, liver tissues showed significant differences (p < 0.05) in lesions observed in low dose (430 mg), medium dose (700 mg) and high dose (1480 mg) groups with very mild, mild and mild to moderate lesion of hepatic necrosis, in the respective groups, and very mild hepatic degeneration and hepatitis were scored in all three groups.

Subacute Oral Toxicity Assesment of Ethanol Extract of Mariposa christia vespertilionis Leaves in Male Sprague Dawley Rats

Nurul, Syahirah Ahmad Sayuti,Hazilawati, Hamzah,Mohd, Rosly Shaari,Mohd, Farhan Hanif Reduan,Noordin, Mohamed Mustapha,Norhaizan, Md Esa Korean Society of ToxicologyKorea Environmental Mu 2018 Toxicological Research Vol.34 No.2

The term Butterfly tea refers to decoction of Mariposa christia vespertilionis leaves which is widely consumed by cancer patients throughout Malaysia and has gained a huge popularity among Malaysians, not only cancer patients but also researchers to discover the real potential of this plant. Herein, the study is aimed at evaluating the possible toxicity in 28-day subacute oral toxicity of ethanolic extract M. christia vespertilionis in male Sprague Dawley rats. The 28-day subacute toxicity study was conducted to detect the no-observed adverse effect level (NOAEL). In this study, a total of 30 rats were divided into the control, 5% DMSO (vehicle), low dose (75 mg/kg), medium dose (125 mg/kg) and high dose (250 mg/kg) groups. The extract was administered daily from day 1 until day 28. At the end of the study, the animals were humanely sacrificed and assessed for the effect extract of Mariposa christia vespertilionis leaves on body weight and relative organ weights and haematological, biochemical and histopathological parameters. The haematological and serum biochemical parameters for the assessment of kidney and liver injuries were carried out. Results of haematological and serum biochemistry results showed no changes in the control and treated groups. In the histopathology, evaluation of kidney tissues in all treated groups showed no significant (p > 0.05) lesions. In contrast to kidney, liver tissues showed significant differences (p < 0.05) in lesions observed in low dose (430 mg), medium dose (700 mg) and high dose (1480 mg) groups with very mild, mild and mild to moderate lesion of hepatic necrosis, in the respective groups, and very mild hepatic degeneration and hepatitis were scored in all three groups.

Extraction of reactive dye via synergistic Aliquat 336/D2EHPA using emulsion liquid membrane system

Raja Norimie Raja Sulaiman,Hilmi Abdul Rahman,Norasikin Othman,Muhammad Bukhari Rosly,Norela Jusoh,Norul Fatiha Mohd Noah 한국화학공학회 2020 Korean Journal of Chemical Engineering Vol.37 No.1

Facilitated transport of Orange 3R was performed by means of emulsion liquid membrane (ELM) technique containing double extractants of Aliquat 336 and D2EHPA as extractant and synergist extractant, respectively. Cooking palm oil, sorbitan monooleate (Span 80), and sodium hydroxide were used as diluent, surfactant and stripping agent, respectively. Several parameters influencing the extraction of Orange 3R via ELM, namely effect of extraction time, agitator speed, Span 80 concentration and treatment ratio, were experimentally investigated and optimized using response surface methodology (RSM). Results demonstrated that about 91% of Orange 3R was successfully extracted under optimum conditions of 12minutes of extraction time, 413 rpm of agitator speed, 3.2% (w/v) of sorbitan monooleate, and 1 : 9.8 of treatment ratio. Additionally, the aforementioned optimum conditions were found to be more suitable to treat low concentration of Orange 3R (less than 100 ppm) from simulated textile wastewater. The findings reveal that reactive Orange 3R dye is able to be selectively extracted using double extractants via sustainable ELM process as well as providing high potential application in the dye removal from industrial textile wastewater.

To Move or Not to Move?: Exploring Future Housing Plan of Ageing Communities in Kuala Lumpur

Ainoriza Mohd Aini,Wan Nor Azriyati Wan Abd Aziz,Noor Rosly Hanif 한국주거학회 2015 한국주거학회 국제학술대회논문집 Vol.2015 No.4

Addressing the Housing Needs for Elderly Society in Malaysia

Wan Nor Azriyati Wan Abd Aziz,Ainoriza Mohd Aini,Noor Rosly Hanif 한국주거학회 2015 한국주거학회 국제학술대회논문집 Vol.2015 No.4

Synergetic formulation of Cyanex 272/Cyanex 302 for hexavalent chromium removal from electroplating wastewater

Raja Norimie Raja Sulaiman,Norul Fatiha Mohd Noah,Norasikin Othman,Norela Jusoh,Muhammad Bukhari Rosly 한국화학공학회 2021 Korean Journal of Chemical Engineering Vol.38 No.3

Hazardous hexavalent chromium (Cr(VI)) released from the electroplating industry beyond the discharge concentration limit has created great concern worldwide. Solvent extraction (SX) is an effective method for metal separation from an aqueous system. Throughout this work, novel synergistic solvent extraction of Cr(VI) from rinsed electroplating wastewater was performed using a mixture of two organophosphorus acidic extractants containing di-2,4,4- trimethylpentyl phosphinic acid (Cyanex 272) and di-2,4,4-trimethylpentyl mono-thio-phosphinic acid (Cyanex 302) in kerosene. The results showed almost 99±0.816% of Cr(VI) was synergistically reduced and extracted to the less toxic trivalent chromium (Cr(III)) using the total mixture concentration of 0.1 M (0.04 M Cyanex 272+0.06 M Cyanex 302). For recycling, the organic phase was recycled or reused up to 11 times for excellent extraction (99±0.471%) and stripping (99±0.942%) and became stable afterwards until a certain time. The total concentration of the mixture system was reduced by 50% (0.05 M) using 0.01 M Cyanex 272 and 0.04 M Cyanex 302, with almost 100% of Cr(VI) extraction as less toxic Cr(III). The Cr(III) in the loaded organic phase was completely recovered using 7.0 M hydrochloric acid (HCl). It is concluded that the synergistic extraction using Cyanex 272/Cyanex 302 system improved the Cr(VI) extraction and reduced the chemical consumption in the organic phase.