The Chua circuit is among the simplest non-linear circuits that show most complex dynamical behav... more The Chua circuit is among the simplest non-linear circuits that show most complex dynamical behavior, including chaos which exhibits a variety of bifurcation phenomena and attractors. In this paper, Chua attractor's chaotic oscillator, synchronization and masking communication circuits were designed and simulated. The Chua system is addressed suitable for chaotic synchronization circuits and chaotic masking communication circuits using Matlab ® and MultiSIM ® software. Simulation results are used to visualize and illustrate the effectiveness of Chua chaotic system in synchronization and application of secure communication.
Projek penyelidikan ini dijalankan dengan bertujuan untuk menghasilkan coklat campuran rumpai lau... more Projek penyelidikan ini dijalankan dengan bertujuan untuk menghasilkan coklat campuran rumpai laut, Kappaphycus alvareii. Sebanyak 9 formulasi telah dihasilkan. Tiga formulasi terbaik dipilih berdasarkan penilaian sensori menggunakan ujian pemeringkatan dan seterusnya satu formulasi terbaik ditentukan melalui ujian hedonik. F7 adalah formulasi terbaik dengan mengandungi likur koko 33%, lemak koko 27%, rumpai laut 6%, gula 33%, lesitin 0.5% dan vanillin 0.5%. Keputusan analisis proksimat bagi coklat campuran rumpai laut, Kappaphycus alvarezii menunjukkan bahawa coklat ini mempunyai 4.13 ± 0.13% lembapan, 28.50 ± 0.90% lemak, 4.78 ± 0.01 protein, 2.28 ± 0.81% serabut kasar, 2.36 ± 0.40% abu, 57.95 ± 0.00% karbohidrat dan 4.48 ± 0.22% serabut diet. Keputusan analisis fizikokimia coklat campuran rumpai laut, Kappaphycus alvarezii selama 8 minggu tempoh penyimpanan menunjukkan bahawa terdapatnya peningkatan takat lebur coklat daripada 28.15 ± 0.05°C. kepada 32.77 ± 0.01°C serta peningkatan kandungan asid lemak bebas iaitu daripada 0.66 ± 0.03 kepada 0.89 ± 0.03. Keputusan ujian mikrobiologi pula menunjukkan bahawa produk akhir yang telah disimpan selama 8 minggu adalah selamat dimakan. Ujian sensori perbandingan berganda menunjukkan sampel coklat yang disimpan pada minggu ke-6 dan minggu ke-8 masing-masing mendapat skor min yang lebih rendah daripada sampel coklat minggu ke-4. Kajian pengguna menunjukkan sebanyak 73% daripada 100 responden suka memakan rumpai laut, Kappaphycus alvarezii. Sebanyak 96 % daripada 100 responden menggemari coklat campuran rumpai laut, Kappaphycus alvarezii. Sekiranya dipasarkan, sebanyak 98 % daripada 100 pengguna akan membeli produk coklat campuran rumpai laut ini.
Catastrophic failure is often associated with a large temperature rise. This situation may lead t... more Catastrophic failure is often associated with a large temperature rise. This situation may lead to a drastic deterioration in material strength where a cooling system is important for a smooth system plant operation to prevent catastrophic failure to its equipments, parts or processes. In this study, a part of a failed closed recirculation system water cooling pipe in a steel manufacturing plant in Malaysia has been investigated for detailed failure analysis. A steam leakage of a water cooling pipe with a closed recirculation system operation made of ASTM A106/A (Carbon Steel Pipes for high temp service) was detected. The aim of this study is to explore the evidence related to the water cooling pipe leakage and to investigate the cause of failure. Detailed investigation was carried out by visual inspection, optical microscopy and hardness testing. With the evidence obtained, due to presence of water scale and prolonged overheating, decarburization had occurred. During decarburizatio...
In this paper, we study an ecological model with a tritrophic food chain composed of a classical ... more In this paper, we study an ecological model with a tritrophic food chain composed of a classical Lotka-Volterra functional response for prey and predator, and a Holling type-II functional response for predator and superpredator. There are two equilibrium points of the system. In the ...
The Chua circuit is among the simplest non-linear circuits that show most complex dynamical behav... more The Chua circuit is among the simplest non-linear circuits that show most complex dynamical behavior, including chaos which exhibits a variety of bifurcation phenomena and attractors. In this paper, Chua attractor's chaotic oscillator, synchronization and masking communication circuits were designed and simulated. The Chua system is addressed suitable for chaotic synchronization circuits and chaotic masking communication circuits using Matlab ® and MultiSIM ® software. Simulation results are used to visualize and illustrate the effectiveness of Chua chaotic system in synchronization and application of secure communication.
Projek penyelidikan ini dijalankan dengan bertujuan untuk menghasilkan coklat campuran rumpai lau... more Projek penyelidikan ini dijalankan dengan bertujuan untuk menghasilkan coklat campuran rumpai laut, Kappaphycus alvareii. Sebanyak 9 formulasi telah dihasilkan. Tiga formulasi terbaik dipilih berdasarkan penilaian sensori menggunakan ujian pemeringkatan dan seterusnya satu formulasi terbaik ditentukan melalui ujian hedonik. F7 adalah formulasi terbaik dengan mengandungi likur koko 33%, lemak koko 27%, rumpai laut 6%, gula 33%, lesitin 0.5% dan vanillin 0.5%. Keputusan analisis proksimat bagi coklat campuran rumpai laut, Kappaphycus alvarezii menunjukkan bahawa coklat ini mempunyai 4.13 ± 0.13% lembapan, 28.50 ± 0.90% lemak, 4.78 ± 0.01 protein, 2.28 ± 0.81% serabut kasar, 2.36 ± 0.40% abu, 57.95 ± 0.00% karbohidrat dan 4.48 ± 0.22% serabut diet. Keputusan analisis fizikokimia coklat campuran rumpai laut, Kappaphycus alvarezii selama 8 minggu tempoh penyimpanan menunjukkan bahawa terdapatnya peningkatan takat lebur coklat daripada 28.15 ± 0.05°C. kepada 32.77 ± 0.01°C serta peningkatan kandungan asid lemak bebas iaitu daripada 0.66 ± 0.03 kepada 0.89 ± 0.03. Keputusan ujian mikrobiologi pula menunjukkan bahawa produk akhir yang telah disimpan selama 8 minggu adalah selamat dimakan. Ujian sensori perbandingan berganda menunjukkan sampel coklat yang disimpan pada minggu ke-6 dan minggu ke-8 masing-masing mendapat skor min yang lebih rendah daripada sampel coklat minggu ke-4. Kajian pengguna menunjukkan sebanyak 73% daripada 100 responden suka memakan rumpai laut, Kappaphycus alvarezii. Sebanyak 96 % daripada 100 responden menggemari coklat campuran rumpai laut, Kappaphycus alvarezii. Sekiranya dipasarkan, sebanyak 98 % daripada 100 pengguna akan membeli produk coklat campuran rumpai laut ini.
Catastrophic failure is often associated with a large temperature rise. This situation may lead t... more Catastrophic failure is often associated with a large temperature rise. This situation may lead to a drastic deterioration in material strength where a cooling system is important for a smooth system plant operation to prevent catastrophic failure to its equipments, parts or processes. In this study, a part of a failed closed recirculation system water cooling pipe in a steel manufacturing plant in Malaysia has been investigated for detailed failure analysis. A steam leakage of a water cooling pipe with a closed recirculation system operation made of ASTM A106/A (Carbon Steel Pipes for high temp service) was detected. The aim of this study is to explore the evidence related to the water cooling pipe leakage and to investigate the cause of failure. Detailed investigation was carried out by visual inspection, optical microscopy and hardness testing. With the evidence obtained, due to presence of water scale and prolonged overheating, decarburization had occurred. During decarburizatio...
In this paper, we study an ecological model with a tritrophic food chain composed of a classical ... more In this paper, we study an ecological model with a tritrophic food chain composed of a classical Lotka-Volterra functional response for prey and predator, and a Holling type-II functional response for predator and superpredator. There are two equilibrium points of the system. In the ...
Uploads
Papers by noor noor