Pemodelan Stokastik Curah Hujan Dari Beberapa Stasiun Curah Hujan Wilayah Tanggamus

This research is to study the periodic and stochastic models in the series of daily rainfall data. The study was conducted using daily rainfall data with a data length of 25 years (1977-2001) from the station of Banjar Agung, Gisting and Gunung Batu. This research used secondary rainfall data from Tanggamus, This study change the series of daily rainfall data into the sepektrum rainfall using FFT (Fast Fourier Transform). Periodicity of daily rainfall data were presented by using 512 rainfall. Stochastic series of rainfall data are assumed as the difference (error) between the rainfall data with periodic rainfall model. Results of this study is the correlation coefficient from three rainfall stations In this study, the correlation coefficient (R) between the data and the periodic model is 0,9974, between stochastic data series and stochastic models is 0,9996, and between data and periodic stochastic models is 0,99997. From these results it can be concluded that the periodic stochastic models of rainfall from Tanggamus periodic models using 512 rainfall data, the approach provides a very significant

Analysis of dielectrophoresis AC electrokinetic in equilibrium using MATLAB

This paper presents an ideal case for dielectrophoretic (DEP) occurrence to separate a mixture of two sizes of particles in microchannel analysed with DEP 3D equation using Matlab. The analysis was done on the particles mobility changes when the medium conductivity varied. The analysis was also done when the particles suspended in different mediums conductivity. The effect of dielectrophoresis on the velocity of the particle when the frequency increased has been successfully discovered

Islamisation of engineering education – a case at IIUM

Seeking knowledge and continuing education are very important elements in Islam. All Muslims (both male and female) are required to make sincere efforts to acquire knowledge for the benefits of themself and the society; They believe that there is only one God (Allah) and He is the ultimate source of all knowledge. Although the education system has various branches, this paper is intended to present the common issues related to the Islamic values and practices in engineering education and the ways to instil ethics & spirituality into the technical education system. The step by step initiatives taken by the faculty of engineering at the International Islamic University Malaysia (IIUM) is highlighted in this paper. In order to achieve the goals of Islamisation of engineering education at IIUM, the relevant Islamic elements are added into the curriculums, textbooks are written and learning outcomes are set (at IIUM) to assess the student’s ability in appreciating the link between the revealed and acquired knowledge. Generally, such initiatives are welcomed by the students, though it requires a substantial amount of continuous efforts from the academic staffs. It is realised that Islamisation of the engineering education and continuous reminder of spirituality in engineering practices are essential to reduce the corruption and unethical practices in the engineering profession, which is one of the major socio-economic problems in many countries, rich or poor, developed or developing. Steps taken in the engineering curriculum design is part of the faculty’s initiatives to achieve its vision, which is to be a world-class centre for engineering education and research with values and ethics. Information shared in this paper could be beneficial for both secular and non-secular education system

Analisis prestasi penuai tenaga mikro frekuensi radio berkuasa rendah menggunakan antena MEMS bagi rangkaian sensor tanpa wayar

Kebelakangan ini, terdapat kecenderungan minat yang semakin meningkat dari para penyelidik menggunakan tenaga ambien bagi menghidupkan peralatan elektronik menggunakan pelbagai teknik penuaian tenaga. Penuaian tenaga mikro adalah teknik yang berpotensi untuk menukar tenaga ambien dari persekitaran kepada tenaga elektrik. Rangkaian sensor tanpa wayar memerlukan sumber tenaga elektrik yang berterusan untuk mengaktifkannya dan sumber tenaga ambien frekuensi radio (RF) yang sentiasa wujud dipersekitaran sangat sesuai digunakan. Oleh itu, penuai tenaga mikro RF yang direkacipta dan dibangunkan terdiri dari litar padanan galangan, pendarab voltan dan litar pengatur tidak memerlukan sumber tenaga luar untuk mengaktifkannya. Litar penuai tenaga mikro RF ini dibina dan disimulasi menggunakan perisian PSPICE dengan menyambungkan perintang beban 1 MΩ. Pada kuasa masukan -20 dBm atau 10 μW yang ditangkap oleh antena MEMS, nilai voltan dan arus keluaran yang dihasilkan dalam litar penuai tenaga ini masing-masing adalah 2.36 V dan 1.7 mA. Manakala, peratusan kecekapan maksimum bagi keseluruhan litar penuai tenaga mikro RF ini adalah 55.7%. Nilai kuasa keluaran yang dihasilkan iaitu 40.12 mW adalah lebih tinggi berbanding nilai kuasa masukan iaitu 10 μW. Penuai tenaga mikro RF ini mampu untuk mengaktifkan rangkaian sensor tanpa wayar dengan keperluan arus masukan minimum 1 mA. Susunatur litar bersepadu menggunakan teknologi CMOS 180 nm bagi litar pendarab telah berjaya dibangunkan dengan saiz yang sangat kecil iaitu 22.48 x 56.96 μm2 sebagai pembuktian litar boleh difabrikasi sebagai cip litar bersepadu

Zero-valent iron impregnated cellulose acetate mixed matrix membranes for the treatment of textile industry effluent

Novel green synthesized zero valent iron (ZVI) nanoparticles of distinct mass fractions of 0.5, 1.5 and 2.5 wt% are blended with cellulose acetate (CA) to prepare CA/ZVI mixed matrix membranes (MMMs). The thermal stability and roughness were improved by increasing the mass fraction of ZVI in CA. The morphology of the prepared CA/ZVI membranes has been studied using transmission electron microscopy (TEM). Pure water permeability (PWP) is increased when adding 0.5 wt% of ZVI nanoparticles. When 2.5 wt% is added, PWP decreased due to the aggregation of ZVI nanoparticles in the CA polymer matrix. The adsorption capacity of ZVI nanoparticles on the CA/ZVI membrane during polymer enhanced ultrafiltration of textile effluent is also investigated. The equilibrium adsorption isotherms are well fitted with the Freundlich model, implying the influence of active adsorptive sites of the ZVI nanoparticles

Spontaneous Rupture of Malarial Spleen: Report of Two Cases

Malaria is endemic in many tropical and subtropical regions of the world, including Saudi Arabia. The infection has serious consequences in those residing in non endemic regions on travelling to endemic areas, due to lack of immunity to the parasite. In this report, we describe the clinical course of two patients who travelled to a malaria endemic area. Both contracted the infection and presented with splenic rupture. They received splenectomy in addition to the appropriate antimalarial medications, with successful outcome

3D-printed Tilt Sensor based on an embedded Two-mode Fiber Interferometer

A 3D-printed tilt fiber sensor using a two-mode fiber interferometer (TMFI) as the sensing mechanism has been demonstrated. The TMFI was constructed by splicing single-mode fibers (SMF28s) at both ends of a two-mode fiber (TMF) to generate a comb-like interference spectrum that is sensitive to bending. A 3D-printed cantilever with a weight attached to one end was used to induce bending as the structure was tilted and by embedding the TMFI onto the 3D printed cantilever, different tilt angles can be measured, as a result of the bending of the fiber. The TMFI exhibited a linear response towards the tilt angles, θ, with a responsivity of 1 × 10-2 nm/deg at negative θ (0 to -90°) and 5 × 10-3 nm/deg at positive θ (0 to 90°), respectively. The sensor was able to detect small angle changes in increments as small as 1° and it performs better than embedded FBG sensors. The tilt sensor proposed has a small form factor and simple design, as well as being cost-effective and light-weight, thus showing significant potential for a variety of civil engineering applications

The use of biomedicine, complementary and alternative medicine, and ethnomedicine for the treatment of epilepsy among people of South Asian origin in the UK

Studies have shown that a significant proportion of people with epilepsy use complementary and alternative medicine (CAM). CAM use is known to vary between different ethnic groups and cultural contexts; however, little attention has been devoted to inter-ethnic differences within the UK population. We studied the use of biomedicine, complementary and alternative medicine, and ethnomedicine in a sample of people with epilepsy of South Asian origin living in the north of England. Interviews were conducted with 30 people of South Asian origin and 16 carers drawn from a sampling frame of patients over 18 years old with epilepsy, compiled from epilepsy registers and hospital databases. All interviews were tape-recorded, translated if required and transcribed. A framework approach was adopted to analyse the data. All those interviewed were taking conventional anti-epileptic drugs. Most had also sought help from traditional South Asian practitioners, but only two people had tried conventional CAM. Decisions to consult a traditional healer were taken by families rather than by individuals with epilepsy. Those who made the decision to consult a traditional healer were usually older family members and their motivations and perceptions of safety and efficacy often differed from those of the recipients of the treatment. No-one had discussed the use of traditional therapies with their doctor. The patterns observed in the UK mirrored those reported among people with epilepsy in India and Pakistan. The health care-seeking behaviour of study participants, although mainly confined within the ethnomedicine sector, shared much in common with that of people who use global CAM. The appeal of traditional therapies lay in their religious and moral legitimacy within the South Asian community, especially to the older generation who were disproportionately influential in the determination of treatment choices. As a second generation made up of people of Pakistani origin born in the UK reach the age when they are the influential decision makers in their families, resort to traditional therapies may decline. People had long experience of navigating plural systems of health care and avoided potential conflict by maintaining strict separation between different sectors. Health care practitioners need to approach these issues with sensitivity and to regard traditional healers as potential allies, rather than competitors or quacks

Strain Sensor Based on Embedded Fiber Bragg Grating in Thermoplastic Polyurethane Using the 3D Printing Technology for Improved Sensitivity

A new and easy-to-fabricate strain sensor has been developed, based on fiber Bragg grating (FBG) technology embedded into a thermoplastic polyurethane filament using a 3-dimensional (3D) printer. Taking advantage of the flexibility and elastic properties of the thermoplastic polyurethane material, the embedding of the FBG provides durable protection with enhanced flexibility and sensitivity, as compared to the use of a bare FBG. Results of an evaluation of its performance have shown that the FBG sensors embedded in this way can be applied effectively in the measurement of strain, with an average wavelength responsivity of 0.013 5 nm/cm of displacement for tensile strain and −0.014 2 nm/cm for compressive strain, both showing a linearity value of up to 99%. Furthermore, such an embedded FBG-based strain sensor has a sensitivity of ∼1.74 times greater than that of a bare FBG used for strain measurement and is well protected and suitable for in-the-field use. It is also observed that the thermoplastic polyurethane based (TPU-based) FBG strain sensor carries a sensitivity value of ∼2.05 times higher than that of the polylactic acid based (PLA-based) FBG strain sensor proving that TPU material can be made as the material of choice as a “sensing” pad for the FBG