Fabrication SiO2 -NiO foam via replication technique for steam methane reforming catalyst at low temperatures

Porous ceramic is a type of material that has highly open and partially interconnected pores. It has a wide range of applications, which include catalyst support, filtration, adsorption and separation.The aim of this study is to fabricate Silica-Nickel Oxide (SiO2-NiO) foams in the range 70 μm to 150μm open pore size, 75% to 90% of porosity, good physical and mechanical properties as a criteria catalyst in the Steam Methane Reforming (SMR) application. In this work, the porous foam fabricated with different compositions of SiO2 as derived from Rice Husk Ash (RHA) (20% to 35%) and at different sintering temperatures (850°C to 1250°C) by using replication sponge method. Characterisation of SiO2 and SiO2-NiO foams included morphological analysis, porosity and density test, and compression test as criteria compatibility of SiO2 and NiO as a catalyst in methane reforming. The morphology result showed open pores with size ranging from 15.13 μm to 76.06 μm. The lowest result for apparent porosity obtained was 65% and the highest was 81.74%, while the lowest and highest values for bulk density were 0.626 g/cm3 and 1.070 g/cm3, respectively. The result for compressive strength was within the range of 0.06 MPa to 0.47 MPa. Throughout the observations, the maximum performance shown the SiO2-NiO foam produced with 35wt% SiO2 and 5wt% NiO was found to have mechanical and physical properties much like those of a filter catalyst in SMR. The methane (CH4) conversion using the SiO2-NiO foam was shown the range of 34.72% to 42.6% at different low temperatures. The results proved that the foam from silica as derived from RHA and NiO is very suitable to be used as a catalyst in SMR due to achieved the minimum CH4 conversion over than 21%

PROBLEMATIKA PEMBERITAHUAN HAPUSNYA JAMINAN FIDUSIA (STUDI SOSIO LEGAL TERHADAP UNDANG-UNDANG NOMOR 42 TAHUN 1999 TENTANG JAMINAN FIDUSIA DI PONTIANAK KALIMANTAN BARAT)

TAHUN 1999 TENTANG JAMINAN FIDUSIA DI PONTIANAK KALIMANTAN BARAT) Undang-Undang Jaminan Fidusia Nomor 42 Tahun 1999 juncto Peraturan Pemerintah Nomor 86 Tahun 2000 telah menegaskan bahwa setiap benda yang dibebani dengan jaminan fidusia wajib didaftarkan ke Kantor Pendaftaran Fidusia, demikian pula apabila jaminan fidusia hapus atau berakhir karena pelunasan oleh Pemberi Fidusia (Debitur) maka Penerima Fidusia (Kreditur) wajib memberitahukan secara tertulis hapusnya jaminan fidusia ke Kantor Pendaftaran Fidusia. Namun dalam praktik, kewajiban untuk memberitahukan hapusnya jaminan fidusia tersebut ternyata belum dilaksanakan sebagaimana mestinya, hal mana akan berakibat hukum terhadap status benda yang menjadi objek jaminan fidusia . Demikian permasalahan dalam penulisan tesis ini dengan judul “Problematika Pemberitahuan Hapusnya Jaminan Fidusia (Studi Sosio Legal Terhadap Undang-Undang Nomor 42 Tahun 1999 Tentang Jaminan Fidusia di Pontianak Kalimantan Barat)”. Tujuan penelitian adalah untuk mengetahui pelaksanaan kewajiban Penerima Fidusia memberitahukan kepada Kantor Pendaftaran Fidusia mengenai hapusnya jaminan fidusia milik Pemberi Fidusia yang pinjaman hutangnya (perjanjian pokok) telah dibayar lunas dan status benda Jaminan Fidusia milik Pemberi Fidusia yang tidak dilakukan penghapusan/pencoretan oleh Kantor Pendaftaran Fidusia. Penelitian ini menggunakan metode pendekatan yuridis empiris/sosio legal, yaitu penelitian yang pada awalnya dilakukan terhadap data sekunder untuk kemudian dilanjutkan dengan penelitian terhadap data primer di lapangan atau terhadap kenyataan yang ada dalam masyarakat. Implementasinya bertujuan untuk mendeskripsikan suatu kegiatan atau peristiwa dalam praktik, kemudian seluruh data yang diperoleh dianalisis secara deskriptif analitis, yaitu menggambarkan peraturan perundang-undangan yang berlaku dan praktik pelaksanaannya, dikaitkan dengan teori-teori hukum. Berdasarkan hasil penelitian, penulis memperoleh jawaban atas permasalahan yang ada, bahwa kewajiban Penerima Fidusia memberitahukan secara tertulis kepada Kantor Pendaftaran Fidusia mengenai hapusnya Jaminan Fidusia ternyata belum dilaksanakan sepenuhnya atau sebagaimana mestinya, sedangkan untuk status benda jaminan fidusia milik Pemberi Fidusia yang tidak dilakukan penghapusan/pencoretan oleh Kantor Pendaftaran Fidusia, ternyata tidak berakibat hukum apapun, hanya berdampak administratif bagi Kantor Pendaftaran Fidusia

Bandpass filter design with spurious frequency reduction capability

Passband microstrip coupled line filter are widely used in daily microwave engineering practice. There are various topologies to implement microstrip bandpass filters such as end-coupled, parallel coupled, hairpin, interdigital and combine filters. This thesis discusses design, simulation, fabrication and testing using microstrip technology. The choice of a parallel coupled filter topology is discussed and an application of the grooved substrate is presented to suppress the first spurious of Parallel Coupled Microstrip Bandpass Filter (PCMBF). Band pass filters (BPF) are significant role in wireless communication systems. These filters present an undesired pass band at twice the design central frequency of the filter. The narrowband with spurious suppression is achieved by using two stage PCMBF, BPF was designed by replacing the tight couplers are arranged at the input and output of the filter whist the weak couplers at the middle section of the tight coupler with optimize groove. By using Sonnet Lite software it shown the BPF with 2.99GHz cut off frequency and bandstop of to 7GHz has been simulated and fabricated on Flame Retardant 4 (FR4) substrate by using etching process. Significant spurious suppression up to 33.23dB is measured at 5.96GHz

Anaemia and associated factors among standard 6 rural schools in Kuala Terengganu District Dicember 1994, 1995

A cross sectional study was done in December 1994 to determine the prevalence rate of anemia and the associated factors among standard six students in the district of Kuala Terengganu. Three schools was randomly selected from 65 schools in Kuala Terengganu which involved a sample of284 students. Data was obtained using a self-administered questionnaire, anthropometry measurement, 24-hour dietary recall, academic assessment and mental activities. The health knowledge of mothers of the students were also assessed using a self-administered questionnaire. The prevalence rate of anemia (Hb < 12 gm.%) was 12.7%. It is higher among female students. The other variables including nutrition intake, antropometry status, family size, sanitation and health knowledge of mothers did not show any significant difference between anemic and non anemic students. These could be due to the fact that the population is homogenous. There is a situation indicating lower school performance based on examination result of three subjects (English, mathematics and Human Science). However this study does not shows any significant difference. This could be due to other confounding factors such as severity of anemia, homogenesity of sample and others not studied. The mental performance of the student is measured by the duration to complete a set of activities involving puzzle, quiz and others was done. The linear regression analysis showed that for every I gm % decrease in level of hemoglobin of the children, there is an increase of 18 second in time to complete the mental activities. (p < 0.05, r = 0.19 and r = 3.8 %). These infer that anemia as indicated by the hemoglobin levels cause a decrease in attention spans of children conducting a set of mental activities. Since anemia is still prevalence among the school children in Kuala Terengganu screening of cases and follows up to over come the problem is importance to ensure that the children are alert at school

Assessment of economic feasibility for gridconnected renewable energy system for a household application in Terengganu

This article extends the conference paper ‘Simulation-based method to evaluate PV/wind hybrid renewable energy system in Terengganu’. Instead of off-grid system considered in the conference version, inspired by feed-in-tariff introduced by The Government of Malaysia, this article includes grid-connected hybrid renewable energy system to examine their feasibility to be used as power supply for a household in Terengganu. In addition, this article compares the performance of grid-only system and hybrid grid-renewable energy systems in terms of cost of electricity and emission of pollutant. The payback period is also examined based on the current sellback rate. Sensitivity analysis is done to find the best sellback rate for a hybrid grid/PV/wind system to compete with a hybrid grid/PV system. In addition, the most optimal configuration is also determined by varying the value of solar radiation, wind speed and sellback rate. Generally, it is concluded that the hybrid grid/PV system is the most practicable choice to be used as power generator to supply electricity for a household in Terengganu

Leadership capability of team leaders in construction industry

This research was conducted to identify the important leadership capabilities for Malaysia construction industry team leaders. This research used exploratory sequential mix-method research design which is qualitative followed by quantitative research method. In the qualitative phase, semi-structured in-depth interview was selected and purposive sampling was employed in selecting 15 research participants involving team leaders and Human Resource Managers. Qualitative data was analysed using content and thematic analyses. Quantitative data was collected using survey questionnaire involving 171 randomly selected team leaders as respondents. The data was analyzed using descriptive and inferential statistics consisting of t-test, One-way Analysis of Variance (ANOVA), Pearson Correlation, Multiple Regression and Structured Equation Modeling (SEM). This study found that personal integrity, working within industry, customer focus and quality, communication and interpersonal skill, developing and empowering people and working as a team were needed leadership capabilities among construction industry team leaders. The research was also able to prove that leadership skill is a key element to develop leadership capability. A framework was developed based on the results of this study, which can be used as a guide by employers and relevant agencies in enhancing leadership capability of Malaysia construction industry team leade

KETERLIBATAN GENERASI MUDA DALAM MELESTARIKAN NILAI DAN PRAKTIK TRADISI BUKA LUWUR DI KUDUS: STUDI ETNOGRAFI

Penelitian ini bertujuan untuk mendeskripsikan keterlibatan generasi muda dalam melestarikan nilai dan praktik tradisi Buku Luwur Sunan Kudus. Untuk itu, studi ini menggunakan pendekatan kualitatif dengan jenis studi etnografis. Lokasi penelitian ini berada di Desa Kauman, Kecamatan Kota, Kabupaten Kudus – Jawa tengah. Informan dipilih secara purposif (bertujuan) sesuai kriteria yang telah ditentukan. Sedangkan data dikumpulkan melalui observasi, wawancara, dan dokumentasi, lalu dianalisis dengan langkah-langkah yang diadaptasi dari model Spradley. Hasil penelitian ini menunjukkan bahwa pertama, keterlibatan generasi muda dalam melestarikan nilai dan praktik tradisi Buka Luwur Sunan Kudus dilakukan melalui beberapa cara, yaitu berpartisipasi aktif sebagai panitia, perewang, dan partisipan. Kedua, faktor yang mendorong keterlibatan generasi muda dalam tradisi ini, di antaranya adalah (1) Perasaan memiliki (sense of belonging) terhadap tradisi Buka Luwur; (2) Upaya menta’dzimi Sunan Kudus dan ngalap berkah (mengais keberkahan) karenanya, dan (3) Kemanfaatan diri seperti perbaikan karakter, peningkatan pemahaman agama, dan peningkatan kesadaran atas nilai-nilai keagamaan. Dan ketiga, nilai-nilai islami yang dirasakan dan dipraktikkan oleh generasi muda dalam keterlibatannya di tradisi Buka Luwur meliputi: (1) Nilai kejujuran, (2) Nilai kesabaran, (3) Nilai kasih sayang, dan (4) Nilai toleransi

Improvement of authorship invarianceness for individuality representation in writer identification

Writer Identification (WI) is one of the areas in pattern recognition that have created a center of attention for many researchers to work in. Recently, its main focus is in forensics and biometric application, e.g. writing style can be used as biometric features for authenticating individuality uniqueness. Existing works in WI concentrate on feature extraction and classi?cation task in order to identify the handwritten authorship. However, additional steps need to be per- formed in order to have a better representation of input prior to the classi?cation task. Features extracted from the feature extraction task for a writer are in vari- ous representations, which degrades the classi?cation performance. This paper will discuss this additional process that can transform the various representations into a better representation of individual features for Individuality of Handwriting, in order to improve the performance of identification in WI

Integration of a Phosphatase Cascade with the MAP Kinase Pathway provides for a Novel Signal Processing Function

We mathematically modeled the receptor-activated MAP kinase signaling by incorporating the regulation through cellular phosphatases. Activation induced the alignment of a phosphatase cascade in parallel with the MAP kinase pathway. A novel regulatory motif was thus generated, providing for the combinatorial control of each MAPK intermediate. This ensured a non-linear mode of signal transmission with the output being shaped by the balance between the strength of input signal, and the activity gradient along the phosphatase axis. Shifts in this balance yielded modulations in topology of the motif, thereby expanding the repertoire of output responses. Thus we identify an added dimension to signal processing, wherein the output response to an external stimulus is additionally filtered through indicators that define the phenotypic status of the cell.Comment: Whole Manuscript 33 pages inclduing Main text, 7 Figures and Supporting Informatio

Hubungan antara efikasi kendiri dan kemahiran belajar dalam kalangan pelajar kejuruteraan

Tujuan kajian ini adalah untuk mengenal pasti hubungan antara tahap efikasi kendiri dan kemahiran belajar dalam kalangan pelajar kejuruteraan. Populasi kajian merupakan pelajar Sarjana Muda Kejuruteraan UTHM. Sampel kajian telah dipilih dari kalangan pelajar Sarjana Muda Kejuruteraan Elektrik dan Elektronik, Sarjana Muda Kejuruteraan Awam dan Alam Sekitar dan Sarjana Muda Kejuruteraan Mekanikal dan Pembuatan. Sampel bagi kajian ini ialah seramai 246 responden yang terdiri daripada 165 orang pelajar lelaki dan 81 orang pelajar perempuan iaitu daripada pelbagai peringkat tahun pengajian. Sampel yang dipilih merupakan persampelan secara rawak. Reka bentuk kajian ini merupakan kajian korelasi kerana ingin melihat hubungan di antara pembolehubah-pembolehubah yang terlibat. Kajian ini berbentuk deskriptif dan dengan menggunakan instrumen Self-Efficacy and Study Skill atau SESS skala lima mata bagi mengukur tahap efikasi kendiri dan kemahiran belajar pelajar. Nilai pekali alpha Cronbach untuk konstruk efikasi kendiri adalah α = 0.88 manakala bagi konstruk kemahiran belajar adalah α = 0.89. Dapatan kajian mendapati terdapat perbezaan yang signifikan antara pelajar lelaki dan pelajar perempuan dari segi tahap efikasi kendiri. Pelajar perempuan dilihat mempunyai efikasi kendiri yang lebih tinggi dengan (min = 141.94) berbanding pelajar lelaki dengan (min = 114.45). Selain itu, didapati juga bahawa wujud hubungan korelasi positif yang kuat di antara tahap efikasi kendiri dan kemahiran belajar dalam kalangan pelajar kejuruteraan. Sebagai kesimpulan, hasil kajian menunjukkan bahawa sekiranya efikasi kendiri meningkat, maka kemahiran belajar juga akan turut meningka