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13 record(s) found

A selective copper(ii) electrode based on 2-acetylpyridine -(1r)-(-)-fenchone azine ligand and 2,6-diacetylpyridine -dj....(1id-(-}-fenchone diazine ligand

Mohamad Idris Saidin

Abstract

This study describe the construction and characteristics of polymeric membrane electrodes based on 2-acetylpyridine-(IR)-(-)-fenchone azine ligand (A) and 2,6-diacetylpyridine-di-(IR)-(-)-fenchone diazine ligand (B) for determination of copper(U) ions. Optimum performance was observed with a membrane composition (w/w) of A (6): PVC (40): DOP (56): NaTPB (1) for ionophore A and B (7): PVC (50): TMDP (86): NaTPB (1) for ionophore B. Membrane electrode A works satisfactorily in the concentration range of 1.0x 1 0-5 to 1.0x 1 0-1 M with a detection limit of 4.0xlO-6 M and Nernstian slope of 30.0±0.2 mY/decade. Meanwhile, membrane electrode B works in the concentration range of I.Ox 1 0-5 to 1.0x 1 0-1 M with detection limit 2.5xlO-6 M and Nernstian slope of29.I±OA mY/decade. Both of these membrane electrodes exhibit wide pH range (4.0-5.0 and 6.0-10.0 for ligand A and 4.0-8.0 for ligand B) and posses a fast response time of below 20 s and also shelf life period of 3 months. The potentiom.....

Thesis Published 2014 1906 hits Available

Pengetahuan tentang kearifan tempatan berkait alam sekitar dalam kalangan guru geografi

Ahmad Mohammad Zohir, Saidin Noorazlina,

Abstract

Artikel ini bertujuan untuk mendapatkan maklumat tentang kearifan tempatan berkait alam sekitar dalam kalangan guru geografi. Satu instrumen yang terdiri daripada soalan-soalan daripada enam aspek iaitu kegiatan penanaman padi; perikanan; getah, kelapa dan buah-buahan; perubatan/kesihatan; pembalakan/produk perhutanan; dan alam sekitar secara umum telah dibangunkan dan ditadbirkan kepada 75 orang guru Geografi yang dipilih secara rawak dari sekolah-sekolah di selatan Kedah. Analisis statistik deskriptif (min dan sisihan piawai) dan statistik inferensi (ujian t sampel bebas) telah dijalankan. Berdasarkan min skor pengetahuan kearifan tempatan, guru dibahagikan kepada tiga kumpulan iaitu tinggi, sederhana dan rendah. Dapatan kajian menunjukkan bahawa pengetahuan kearifan tempatan berkait alam sekitar guru adalah pada tahap yang sederhana. Hasil kajian juga menunjukkan tidak terdapat perbezaan yang signifikan antara guru geografi berdasarkan lokasi (bandar dan luar bandar) dari aspek kear.....

Article Published 2016 1544 hits Available

Sinaran bachaan rumi

Sanusi Mansor, Yahya Saidin,

Abstract

Bahawa buku ini di-susun kebetulan dengan masa Kongres Bahasa dan Persuratan Melayu yang ketiga yang telah berlangsong di-Johor dan diSingapura pada 16 hingga 1 September 1956. Oleh itu gaya susunan dan chara, jalan Bahasa juga ada-lah terbias sechara Indonesia champoran Melayu; ia-itu mengikut kemahuan ra'ayat jelata yang bersidang di-Kongres yang tersebut...

Book Published 1956 2480 hits Limited

Electrochemical sensor of copper, nickel and mercury using fenchone diazine ligand complexes-modified multiwalled carbon nanotubes paste electrodes

Mohamad Idris Saidin

Abstract

This study aims to develop a modified multiwalled carbon nanotubes paste electrodes based fenchone azine ligand complexes for detecting copper, nickel and mercury. The fenchone diazine ligand complexes were characterized by using nuclear magnetic resonance spectroscopy, Fourier transform infrared spectroscopy, X-ray photoelectron spectroscopy, energy-dispersive X-ray spectroscopy, X-ray diffraction spectroscopy, scanning electron microscopy and transmission electron microscopy. The electrochemical properties of the modified electrodes were determined using square wave stripping voltammetry, cyclic voltammetry and electrochemical impedance spectroscopy. The results show that under optimal conditions, the electrodes showed a linear range between 0.1 nM and 1.0 µM, 10 nM and 1.0 µM, 5.0 µM and 0.1 mM with the limit of detection of 80 pM, 7.4 nM and 3.7 µM for detection of copper, nickel and mercury respectively. The interferences from Ba2+, Ca2+, Cd2+, Ce3+, Co2+, Cu2+, Pb2+, Mn2+, Mg.....

Thesis Published 2017 1787 hits Available

Recombinant pyruvate phosphate dikinase (rPPDK): development of antibody and antigen rapid dipstick tests for amoebiasis and identification of potential antiamoebic compounds

Syazwan Saidin

Abstract

Amoebiasis, an enteric protozoan disease caused by Entamoeba histolytica, is a public health problem in many developing countries. Intestinal amoebiasis may produce symptoms such as colitis and dysentery; while extraintestinal amoebiasis commonly results in amoebic liver abscess (ALA). The commercial antigen detection tests for intestinal infection vary in their sensitivities and specificities; most of them use native parasite antigen extract which have specificity issues. Thus this study was aimed at improving the laboratory diagnosis of ALA and intestinal amoebiasis. Previously, pyruvate phosphate dikinase (PPDK) had been identified as a marker for detection of extraintestinal amoebiasis, thus the recombinant form of the protein (rPPDK) was used in this study to develop a rapid antibody dipstick test for ALA. Search for new anti-amoebic agents is important due to the side-effects of metronidazole and reports of resistance against it. PPDK is involved in a key pathway in the energy me.....

Thesis Published 2017 1306 hits Available

Pengetahuan kakitangan muslim terhadap pengiraan sumber penggajian dalam zakat pendapatan

Noor Hamizah Saidin

Abstract

Tujuan kajian ini adalah untuk menganalisis pengetahuan dan kepatuhan pembayar zakat untuk menunaikan zakat pendapatan dengan kaedah yang paling tepat. Ketepatan dalam pengiraan pendapatan yang wajib ditunaikan zakat amat penting kini. Perkembangan jenis sumber pendapatan yang tidak terhad kepada gaji dan elaun sahaja, memerlukan pembayar untuk lebih berhati-hati menunaikan amalan ini. Sehubungan itu, kajian ini membentuk 11 sumber yang membentuk penggajian individu melibatkan dua punca utama iaitu gaji dan elaun, manakala sembilan sumber baru. Antara sumber-sumber baru ini ialah pendapatan pokok, elaun, bayaran pakar rujuk, tuntutan bersih daripada kerja rasmi dan juga penyelidikan. Bagi mendapatkan data, kajian ini menggunakan instrumen borang soal selidik. Item utama yang membentuk 11 sumber pendapatan yang dikaji diteliti berbantukan maklumat dari kalkulator zakat pendapatan secara atas talian. Responden dalam kajian ini terdiri daripada kakitangan pengurusan dan professional di Un.....

Thesis Published 2016 3693 hits Available

Analysis of trace nickel by square wave stripping voltammetry using chloropalladium (II) complex-modified MWCNTs paste electrode

Mohamad Idris Saidin

Abstract

The application of multiwalled carbon nanotubes (MWCNTs) paste electrode modified with chloropalladium(II) complex in the analysis of trace nickel is presented in this work. The chloropalladium(II) complex was characterized by fourier transform infrared spectroscopy (FTIR), nuclear magnetic resonance spectroscopy (NMR), energy-dispersive X-ray spectroscopy (EDX), X-ray diffraction (XRD), X-ray photoelectronspectroscopy (XPS), scanning electronmicroscope (SEM), and transmissionelectronmicroscope (TEM). Several operational parameters influencing the electroanalytical response of the modified electrode were optimized, such as the different composition of modifier, pH ofthe solution, accumulation potential, and accumulation time. At optimal condition a linear plot for nickel concentration between 10 nM to 1.0 M with a limit of detection 7.4 nM were obtained. The relative standard deviation for the 1.0 M of Ni(II) was 4.0% (n = 5). This study shows that with the exception of Co2+, excess co.....

Article Published 2017 1052 hits Limited

Kesan aktiviti kreatif dan manipulasi arahan terhadap kreativiti produk peribahasa Melayu

Ruzita Saidin

Abstract

Kajian ini bertujuan untuk meneliti kesan aktiviti kreatif dan manipulasi arahan terhadap kreativiti murid tahun lima yang menghasilkan produk daripada peribahasa Melayu. Kajian ini berbentuk kuasi-eksperimen dan data kajian dianalisis melalui pendekatan kuantitatif. 90 orang murid tahun lima daripada tiga buah sekolah di Hulu Selangor yang sama ciri dan kategori dipilih sebagai sampel kajian. Sampel dibahagikan kepada tiga kumpulan yang menjalankan aktiviti kreatif untuk menghasilkan produk peribahasa. Kumpulan 1 menerima arahan standard (AS), kumpulan 2 menerima arahan kreatif (AK) manakala Kumpulan 3 menerima arahan kreatif terperinci (AKT). Produk peribahasa Melayu yang dihasilkan dinilai oleh tiga orang penilai menggunakan teori implisit dengan lima skala Likert. Min tertinggi bagi skor kreativiti adalah bagi kumpulan AKT�.....

Thesis Published 2021 1917 hits Available

Prevalence and associated risk factors of entamoeba histolytica, E. dispar and E. moshkovskii infection among Orang Asli communities in Slim River, Perak

Syazwan Saidin

Abstract

Entamoeba infection is still widespread in Malaysia’s rural area particularly among Orang Asli communities which usually associated with poverty and lack of sanitation. Due to scarce information on these Entamoeba infections in Slim River, Perak we conducted this study to investigate the prevalence and associated risk factors towards this infection. A total of 55 stool samples from voluntary participants with and without symptoms of amoebiasis were collected and examined using PCR technique. PCR analysis showed 16.4% stool samples were detected positive for Entamoeba spp., discriminated as 7.3% that were positive for E. histolytica and 9.1% for E. dispar. No E. moshkovskii was detected at all. Factors such as indiscriminate defecation, improper sewage disposal and not washing hand after playing with soil or gardening showed significant association with E. histolytica infection; while gastrointestinal symptom such as vomiting was associated with E. dispar infection. In conclusion, the.....

Article Published 2020 1403 hits Available

Status pemakanan dalam kalangan atlet Sekolah Sukan Negeri Selangor

Haizul Rasdy Saidin

Abstract

Kajian ini menyelidik status pemakanan dalam kalangan atlet Sekolah Sukan Negeri Selangor. Seramai n=60 orang pelajar yang tinggal di asrama yang berusia 14 tahun (n=18 lelaki, n=13 perempuan) dan 16 tahun (n=16 lelaki, n=13 perempun) terlibat sebagai subjek kajian. Kajian ini menggunakan reka bentuk ‘one short study’ melibatkan lima komponen kajian iaitu pemeriksaan prevalan malnutrisi, lipatan kulit, indeks jisim badan, nisbah ukur lilit pinggang-pinggul dan tekanan darah. Data-data yang dikutip diproses secara statistik deskriptif menggunakan Statistical Package for the Social Science (SPSS) versi 16. Berdasarkan lima komponen yang dikaji menunjukkan semua atlet Sekolah Sukan Negeri Selangor berada dalam keadaan normal kecuali pemeriksaan prevalan malnutrisi memperlihatkan tiga orang atlet lelaki didiagnosis sebagai kes brittle dan dua orang atlet lelaki lagi sebagai kes bone deformities. Disarankan pemakanan atlet Sekolah Sukan Negeri Selangor hendaklah mengikut Recommended Nut.....

Thesis Published 2013 531 hits Available

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