Degradation of congo red dye in aqueous solution by using advanced oxidation processes / Alya Nadhira Nasron... [et al.]

Degradation of azo dyes by using advanced oxidation processes (AOPs) was conducted. In this approach, different AOPs, which are Fenton process and titanium dioxide (TiO 2 ) catalyst, were examined and compared for the degradation of an azo dye (i.e., Congo red dye). The sample was tested under UV light and the experiment was conducted for 90 min with 15 min interval. The degradation rate of dye was determined using UV-Vis spectrophotometry. The effect of several parameters on the degradation process such as the concentration of metal ions (Fe 2+ , Cu 2+ , and Mn 2+ ) as the catalyst in Fenton process, the concentration of hydrogen peroxide (H 2 O 2 ), the mass of TiO 2 , and pH value of the dye solution were investigated. The initial Congo red concentration used for both techniques was 5 ppm. The results showed that the percentage degradation followed the sequence of H 2 O 2 /Fe 2+ /UV, H 2 O 2 /Cu 2+ /UV, H 2 O 2 /Mn 2+ /UV, and TiO 2 /UV. The best operating conditions for H 2 O 2 /Fe 2+ /UV were pH 3, 0.2 M concentration of H 2 O 2 , and 0.02 M concentration of metal ion in 15 min, which achieved 99.92% degradation of dye. The Fourier transform infrared (FTIR) spectrum showed the absence of azo bond (N=N) peak after degradation process, which indicates the successful cleavage of azo bond in the chemical structure of Congo red

Organization support for cloud computing implementation success in education system: scale development and validity in Delphi

Cloud computing (CC) support for learning systems has been viewed as one of the most discussed issues that promise to modernize computing by providing visualized resources as a service over the internet. To be stable in cloud computing acquisition requires an education institution to address many of the same concerns they face in implementing an Information System (IS) service. Currently, there is still lack of CC implementation standard and organizational support that impacted VLE system performance. Previous research has reported that the influence of the CC implementation decision depends on the impact of various factors studied. Nonetheless, organizational support is the least factor mentioned especially studies from Malaysia. Thus, the main purpose of this study is to develop a validated scale of organizational support in implementation decision activities towards CC implementation success. In this paper, the Delphi process adopted to measure consensus among nominal group technique (also known as the expert panel). Key methodological issues in using the methods are discussed, along with the distinct contribution of consensus methods as aids to decision making in education service development. The study has adapted stages of proses flow of scale development and validation of measurement items according to legitimate measures in the Delphi technique. The measurement scales formed are based on literature review and field studies conducted to increase the reliability and validity values. Organizational support constructs were divided into top management support, firm size, awareness, Technology Readiness and cost effectiveness. A total of 5 items have been successfully set up for further validatio

Environmental awareness study on the geographical perspective of Kedah and Kelantan communities in Malaysia

Environmental pollution is a problem that occurs all over the country and it has different effects on human health. The issue of pollution is a new challenge for urban and rural residents. This study aims to analyze environmental awareness among the geographical perspective of Kedah and Kelantan communities in Malaysia. The method used in this study is quantitative method. This study was conducted on 500 responders from urban and rural area in Kedah and Kelantan, Malaysia. Data were collected using questionnaires and analyzed to measure the level of environmental awareness among communities in Kedah and Kelantan. The data obtained were analyzed using XLStat2020. The data shows that the level of awareness in Kedah and Kelantan is still at an encouraging level. This study showed that urban and rural population in Kedah and Kelantan experienced in environmental awareness with a significant value of 0.05. Therefore, environmental education is the best effort to maintain public awareness of environmental care

Including public realism in determining new pricing scheme for sanitary landfill in Malaysia

Financial restriction and excessive demand for solid waste disposal is a pressing issue in developing countries. Neglecting this problem can worsen environmental damage and endanger public health. To address this challenge, this study investigated the influence of social factors on the willingness to pay for a sanitary landfill in Malaysia using choice modelling. Focusing on neighbouring districts, Kota Bharu and Bachok, where households share a crude-dumping landfill, the study collected data from 624 respondents. The findings revealed a common preference among respondents for a sanitary landfill attribute related to controlled disease vectors, with willingness to pay ranging from RM10.66 to RM13.33 per month. Interestingly, despite experiencing adverse effects from the crude-dumping landfill, respondents from Bachok still showed a preference for it. This preference could be influenced by lower mean incomes among Bachok residents who live closer to the landfill site compared to respondents in Kota Bharu. To address these dynamics, implementing cross-subsidies by charging higher prices to households in Kota Bharu and lower prices to households in Bachok could facilitate the successful implementation of the sanitary landfill. These results can inform other developing countries by highlighting the importance of considering the local social context when designing sustainable solid waste policies

Teachers` understanding of family values: a qualitative survey

This qualitative case study is aimed to explore teachers' understanding of family values. The respondents consist of five secondary school teachers, who teach five subjects that cover family themes. The process of collecting data is obtained by using semi-structured interviews, observation and document analysis. Issues of validity and reliability of the study are resolved by using four methods, namely triangulation, peer review, audit trail and prolonged engagement. Atlas.ti software is used to analyse the transcription of interviews and develop the theme in this study. The findings show that family values understood by the teachers are in reference to good values, good manners and culture of life. Teachers' understanding of family values is closely related to the aspects of family and community life. Therefore, inculcation of family values should be given priority and attention by all parties, especially teachers and parents

Teachers` understanding of family values: a qualitative survey

This qualitative case study is aimed to explore teachers' understanding of family values. The respondents consist of five secondary school teachers, who teach five subjects that cover family themes. The process of collecting data is obtained by using semi-structured interviews, observation and document analysis. Issues of validity and reliability of the study are resolved by using four methods, namely triangulation, peer review, audit trail and prolonged engagement. Atlas.ti software is used to analyse the transcription of interviews and develop the theme in this study. The findings show that family values understood by the teachers are in reference to good values, good manners and culture of life. Teachers' understanding of family values is closely related to the aspects of family and community life. Therefore, inculcation of family values should be given priority and attention by all parties, especially teachers and parents

Adolescent to Adolescent Transformation Program- Nurturing, Enhancing and Promoting Adolescents’ Healthy Habit (ATAP-NEPAH): Curbing Social Problems Among Adolescents in Kelantan Through Peer-To-Peer Health Education

The objectives of ATAP-NEPAH are to enhance and nurture healthy habits among adolescents as well as to empower adolescents in inculcating these healthy habits among them. Health education through peer-to-peer approach is used to instill the knowledge on important areas such as sexual and reproductive health, smoking, substance abuse, illegal street racing (rempit) and mental health. Specific modules were developed by experts (lecturers) in multidisciplinary fields in collaboration with Malaysian Association for Adolescent Health (MAAH), National Population and Family Development Board (NPFDB), Reproductive Health Association of Kelantan (REHAK) and Rhaudatus Sakinah Kelantan. The trained Medical Students Facilitator Team (MSFT) of USM became trainers to secondary one school students. The selected school students were trained by the medical students to become peer educators to their juniors and peers. There was improvement in the readiness level of peer educators, knowledge and attitude towards healthy habits and risky behaviors of other school students after the intervention

Reka bentuk dan pembinaan personalized learning courseware berasaskan konsep objek pembelajaran digital bagi pembelajaran animasi dan rangkaian komputer

Kajian ini bertujuan untuk membangunkan sebuah perisian pendidikan bagi topik Rangkaian Komputer menggunakan pendekatan Objek Pembelajaran Digital (OPD). Penghasilan bahan pengajaran yang berkonsepkan digital biasanya memerlukan masa yang lama dan kos yang tinggi. Menurut Wiley (2000) Objek Pembelajaran Digital ialah memecahkan isi kandungan pelajaran kepada bahagian-bahagian yang kecil yang boleh digunakan kembali dengan pelbagai persekitaran pembelajaran. Dengan membangunkan perisian menggunakan pendekatan OPD, masa dan kos dapat dijimatkan. Selain itu, OPD juga boleh menjadi salah satu sumber untuk menyokong pembelajaran kerana ia mempunyai ciri-ciri yang sangat efektif seperti kebolehgunaan semula, pakej pembelajaran yang kecil, interaktif dan merupakan pembelajaran yang bermakna. Pakej-pakej pembelajaran yang kecil ini dapat digabung menjadi satu pakej yang besar. Melalui perisian yang dibina, pelajar boleh memilih topik yang ingin dipelajarinya berdasarkan OPD yang disediakan. Setelah membuat pilihan topik, pelajar secara tidak langsung telah membina menu yang terdiri daripada topik-topik yang hanya ingin dipelajarinya sahaja. Dengan itu, pelajar akan lebih fokus kepada apa yang ingin dipelajarinya. Di dalam setiap topik, pelajar akan didedahkan dengan pendekatan pembelajaran yang bermakna seperti, pembelajaran berasaskan masalah, simulasi, permainan dan juga kuiz berperingkat. Perisian ini boleh digunakan oleh pelajar-pelajar yang mengambil matapelajaran Animasi Komputer dan Rangkaian Komputer. Perisian ini dibangunkan dengan menggunakan perisian pengarangan Macromedia Authorware 7.0 dan perisian sokongan yang lain, Adobe Photoshop CS2, Macromedia Flash 8 dan Ulead Gif Animator. Perisian ini berpotensi meningkatkan pengalaman pembelajaran individu terutamanya pada era teknologi maklumat yang semakin membangun

Applied Calculus For Engineering & Science Students

This module is designed for one-semester calculus course aimed at students majoring in science and engineering. A wide variety of topics, examples and problems are provided. This module can be used as an aided tool in teaching and learning multivariable calculus. This module consists of four chapters. Students are introduced to polar coordinates and vectors in Chapter 1. This chapter includes the 3-dimensional graph sketching and polar curve, allowing for a source of rich illustrations and exercises. The next chapter concentrate on vector-valued functions including discussions on arc length, curvature and motion in space. Chapter 3 covers partial derivative involving functions with more than one variable. The final chapter covers multiple integrals and the applications

Student engagement and final year project achievement in the Peninsular Malaysia Agricultural Vocational College

This study aims to determine the level of student involvement and its influence on the achievement of the final year project (PTA) at the Agricultural Vocational College (KV) in Peninsular Malaysia. The study used a descriptive correlational design, which involved a total of 136 students from 3 agricultural KVs using simple random sampling techniques. Survey questionnaires are used as study instruments. The respondents needed to answer 30 items divided into sub-constructs that were divided into emotional, behavioral, skills and cognitive items. The findings showed that overall, the involvement of Malaysian Vocational Diploma students in the implementation of final year projects was at a high level (M=3.95 and SD=.421). The achievement level of most students in PTA at agricultural KV in Peninsular Malaysia was found to be at an excellent level (grade A) of 69.1%. Correlation analysis shows that student involvement in emotional and behavioral dimensions has a significant relationship with student PTA achievement. However, for the cognitive dimension, there is no significant association with students' PTA achievement. Measures should be taken by various parties to enhance student's engagement as well as to improve agricultural students' achievements in vocational college for the betterment of this field of study