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7591 | 2018 thesis | Adsorption of metal ions and dyes from aqueous solutions using lala clam (Paphia textile) shell Ahmed Eljiedi, Arwa Alseddig This study aimed to evaluate the effectiveness of lala clam shell as an adsorbent for the remediation of water contaminated by metal ions and dyes. Three main studies, namely adsorption, desorption and characterisation, have been conducted. In this study, Cd(II), Cu(II), Pb(II), Congo red (CR), Methylene blue (MB), Rhodamine B (RB) and Methyl orange (MO) were used as contaminants. A systematic evaluation for adsorption process involving several experimental parameters such as solution pH, adsorbent dosage and initial adsorbate concentration was performed. The applicability of lala clam shell to remove metal ions and dyes from aqueous solution was assessed in both single- and mixsystem. Hydrochloric acid (HCl) and ethylenediaminetetraacetic acid (EDTA) were used as desorption agents in desorption study. The characterisation study was carried out using Field Emission-Scanning Electron Microscope (FE-SEM), Energy Dispersive X-ray (EDX) Spectrometer and Fourier Transform Infrared (FTIR) Sp..... 1391 hits |
7592 | 2018 thesis | Synthesis, characterisation and application of gelatin-additive for food preservation Mimi Syakila Samsi This study aims to evaluate potential of gelatin-chitosan (Gel-Cs) and gelatincarboxymethyl cellulose (Gel-CMC) films to preserve perishable food products. Three main studies, namely synthesis, characterisation and preservation have been conducted. Biopolymer films were prepared by using solvent casting method with three volume per volume (Gelatin:Additive) ratios, namely 75:25, 50:50 and 25:75. In this study, chitosan\ and CMC were used as additives in gelatin-based film forming solutions. The characterisation study was carried out by using Fourier Transform Infrared (FTIR) Spectrometer, Ultraviolet-Visible (UV-Vis) Spectrophotometer, Universal Testing Machine, Thermogravimetric Analyser (TGA) and Scanning Electron Microscope (SEM). The antimicrobial tests were conducted by using two common food pathogens, namely Staphylococcus aureus (Gram positive) and Escherichia coli (Gram negative). The preservation study was performed for 12 days in order to evaluate effectiveness of gelatin-add..... 416 hits |
7593 | 2018 thesis | Preparation of multiwall carbon nanotubes/polymer nanocomposites stabilized by 1-Butyl_3-Methyl-Imidazolium (BMIM)-Surfactants Abuazoum, Ali Rabiaa This aims to prepare multiwall carbon nanotubes / polymer nanocomposite stabilized by 1-butyl-3-methyl-imidazolium (BMIM)-surfactant. Dispersibility of MWCNTs in cellulose and natural rubber latex polymer matrix was studied and prepared via latex technology approaches by addition of 1-butyl-3-methyl-imidazolium (BMIM)- surfactant. The ability of BMIM-surfactants for dispersing MWCNTs in polymer was characterized using a range of techniques including field emission scanning electron microscopy (FESEM), thermogravimetric analysis (TGA) and small angle neutron scattering (SANS). And for-point probe measurements. Research finding showed that MWCNTs were more efficiently dispersed in cellulose utilizing 1-butyl-3 methylimidazolium- dodecyl benzene sulfonate (BMIM-DBS) than commercially available surfactant sodium dodecylbenzenesulfonate (SDBS). In conclusion, surfactant counterion gives an importance effect to improve the dispersibility of MWCNTs in cellulose. In implication, the results wi..... 432 hits |
7594 | 2017 thesis | Kesan teknik eksplorasi internet berasaskan pendekatan konstruktivisme terhadap penulisan karangan fakta Kavitha Ratnam Kajian ini dijalankan untuk mengenal pasti kesan teknik eksplorasi Internet berasaskan pendekatan konstruktivisme terhadap penulisan karangan fakta murid tingkatan empat. Kajian ini menggunakan reka bentuk campuran, iaitu kuantitatif dan kualitatif untuk mencapai lima objektif khusus. Kajian ini menggunakan kaedah kuasi-eksperimen dan analisis karangan. Sampel kajian terdiri daripada 73 orang murid tingkatan empat di salah sebuah sekolah di dalam Daerah Hilir Perak, Teluk Intan. Murid bagi kumpulan kawalan ialah 35 orang, manakala murid kumpulan rawatan ialah 38 orang. Dua orang guru juga dipilih sebagai sampel untuk penilaian pencapaian karangan. Huraian data bagi kajian ini dianalisis secara deskriptif dan inferensi. Huraian data deskriptif bagi reka bentuk kajian kuantitatif adalah dengan menggunakan min dan sisihan piawai. Bagi reka bentuk kuantitatif juga, huraian data inferensi adalah dengan menggunakan Ujian-t Sampel Tidak Bersandar. Ujian Cohen's Kappa pula untuk menganalisis p..... 1152 hits |
7595 | 2017 thesis | The effects of character strengths learning on students Mathematics achievement, character strengths, classroom engagement and well-being Duni@Josephine, Dillah This study aims to determine the effects of character strengths learning in teaching and learning of mathematics towards students’ achievement and develop the character strengths so that students are engaged in classroom and to achieve well-being. The quasi experimental non-equivalent control group pre-post-test design was employed on two form two intact classes from a secondary school in Keningau, Sabah. Both classes were randomly selected and divided into treatment (CSL) involving 33 students and control (CT) group involving 32 students. Transformation topic was selected to be taught and the experiment process took up around five weeks to complete. There were four instruments involved which are the Transformation Achievement Test, Character Strengths Measure, Classroom Engagement Measure and Well-being Measure. The collected data were analysed using descriptive statistics such as mean, standard deviation, frequency and percentages as well as inferential statistics namely the indepe..... 947 hits |
7596 | 2017 thesis | Pembinaan instrumen peramal faktor obesiti dalam kalangan pelajar berumur 13 dan 14 tahun Zarizi Ab Rahman Obesiti merupakan fenomena yang sedang mengancam kesihatan dan kesejahteraan masyarakat dunia. Kajian ini bertujuan membina instrumen soal selidik peramal faktor obesiti. Kajian ini melibatkan pelajar berumur 13 dan 14 tahun di Klang, Selangor. Instrumen yang digunakan untuk menganggar peratus lemak tubuh ialah instrumen pengukuran komposisi tubuh kaedah lapangan adalah Indeks Jisim Tubuh, Bio Impedance Analysis, dan Ujian Lipatan Kulit. Manakala instrumen soal selidik peramal faktor obesiti dibina berdasarkan adaptasi daripada Physical Activity Questionaire for Older Children, The Adolescent Sedentary Activity Questionaire, dan Nutrition and Physical Activity Survey. Seramai 142 pelajar terlibat dalam kajian fasa satu. Hasil kajian mendapati Indeks Jisim Tubuh merupakan instrumen yang paling tepat bagi pengukuran komposisi tubuh kaedah lapangan yang ditentukan melalui kesahan convergent. Kajian fasa dua, sebanyak 84 item soal selidik peramal faktor obesiti telah melalui proses kesahan..... 1845 hits |
7597 | 2017 thesis | Pengetahuan dan pelaksanaan kemahiran proses sains bersepadu dalam kalangan guru sains menengah rendah Saniah Sembak Kajian ini bertujuan untuk menilai pengetahuan dan pelaksanaan lima Kemahiran Proses Sains Bersepadu (KPSB) yang menggunakan rekabentuk kajian tinjauan. Sampel kajian terdiri daripada 390 orang guru sains menengah rendah. Mereka dipilih secara rawak berstrata dari 66 buah sekolah di Melaka. Instrumen terdiri daripada Ujian Pengetahuan KPSB, soal selidik Pelaksanaan KPSB, senarai semak dan protokol temubual. Perangkaan deskriptif secara keseluruhannya menunjukkan tahap pengetahuan dan tahap pelaksanaan adalah sederhana. Analisis MANOVA mendapati pelaksanaan KPSB guru lelaki adalah lebih tinggi berbanding dengan guru perempuan. Pengetahuan KPSB guru ijazah sarjana muda pula lebih tinggi berbanding dengan guru sarjana. Analisis Regresi Berganda menunjukkan sumbangan pemboleh ubah tak bersandar terhadap Pelaksanaan KPSB adalah sebanyak 33.7%. Antara faktor dominan yang menyumbang kepada Pelaksanaan KPSB ialah Pengetahuan Membina Hipotesis, Pengetahuan Mengeksperimen dan Pengetahuan Mengawa..... 495 hits |
7598 | 2017 thesis | Pembinaan dan pengesahan instrumen pentaksiran prestasi standard awal pembelajaran dan Perkembangan Awal Kanak-Kanak Nor Mashitah Mohd Radzi Kajian ini bertujuan untuk membina dan mengesahkan Instrumen Pentaksiran Prestasi, Standard Awal Pembelajaran dan Perkembangan Awal Kanak-kanak. Kerangka pembinaan instrumen Miller (2013) telah menggabungkan 10 langkah pembentukan instrumen oleh McNamara (1996), Turner (2001) dan Wortham (2012). Kajian ini mengenal pasti empat faset pengukuran iaitu item dan domain, kanak-kanak, penilai dan kebezaan kefungsian faset dengan kurnpulan umur dalam enam domain pembelajaran awal kanak-kanak. Teori Generalizibiliti (Teori G) digunakan bertujuan mengenal pasti nilai kebergantungan setiap domain. Seramai 278 orang kanak-kanak berumur dua hingga empat tahun daripada lapan buah taska di Selangor telah dipilih melalui teknik pensampelan bertujuan. Analisis pengujian item-item dilakukan menggunakan perisian Facets 3.71 dan EduG 2.0. Dapatan menunjukkan enam domain pembelajaran awal kanak-kanak memenuhi semua andaian model Facets Rasch. Dapatan juga menunjukkan perbezaan yang signifikan dari segi ta..... 901 hits |
7599 | 2017 thesis | Conceptual model of mobile learning application for kindergarden children Norshahila Ibrahim Mobile Learning Application (MLA) refers to the use of mobile devices in delivering learning content using the advantages of mobile devices. Unfortunately, some drawbacks pertaining to such application have circumvented its use and purpose in classrooms. Two main problems are identified and highlighted in this study; i) problems found within the existing MLA and ii) lack of incorporation of mobile learning related concepts and theories in MLA development for children. Therefore, this study has fulfilled four main objectives; i) to analyse and identify the potential MLA model related concepts and theories, ii) to develop and validate a conceptual model by incorporating all potential MLA association related concepts and theories, iii) to develop MLA by implementing all elements incorporated in the conceptual model, and iv) to evaluate the MLA in terms of usability and effectiveness. In this particular research, a total of eight important variables which are mobile application technology,..... 537 hits |
7600 | 2017 thesis | Pembinaan, pengujian instrumen dan pengukuran tahap profesionalisme guru bimbingan dan kaunseling sekolah rendah Hamidah Mahmud Kajian ini bertujuan untuk membina dan menguji kesahan dan kebolehpercayaan Instrumen Profesionalisme Guru Bimbingan dan Kaunseling (IPGBK), serta mengukur tahap profesionalisme guru bimbingan dan kaunseling sekolah rendah. Kajian ini menggunakan kaedah kuantitatif dan kualitatif. Pembinaan instrumen ini dilakukan dengan menganalisis lima buah dokumen Standard Kaunselor Sekolah dari luar negara. Analisis kandungan setiap dokumen menghasilkan draf yang dinilai kesahannya oleh tiga orang pakar, manakala kebolehpercayaan instrumen diperoleh daripada 35 orang guru bimbingan dan kaunseling. Seramai 390 GBK, 140 orang ketua jabatan dan 252 orang rakan sekerja merupakan sampel untuk mengukur tahap profesionalisme menggunakan IPGBK dan amalan profesionalisme dikaji dengan kaedah temu bual dan pemerhatian ke atas empat orang guru bimbingan dan kaunseling. Dapatan kajian mendapati IPGBK mempunyai nilai kesahan yang tinggi dan nilai kebolehpercayaan juga tinggi (0.83 hingga 0.98). Hasil kajian ku..... 1066 hits |
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