2,522 research outputs found
Sensor material characterisation for magnetometer application
Pengukuran dan gangguan medan magnet arus terus dan arus ulang-alik memerlukan penderia medan magnet yang mempunyai kepekaan yang tinggi dan stabil. Untuk menghasilkan penderia tersebut, ciri-ciri bahan magnet yang baik telah dikenalpasti. Beberapa jenis bahan magnet yang berbeza telah digunakan untuk mengkaji ciri-ciri dan kesannya terhadap medan magnet. Teras gelang yang diperbuat daripada bahan-bahan magnet tersebut direkabentuk dengan dimensi yang sama bagi membolehkan perbandingan dibuat dengan mudah. Selain itu, rod tunggal dan berkembar juga telah digunakan sebagai teras penderia fluxgate, untuk melihat prestasi setiap jenis penderia tersebut. Kedua-dua penderia tersebut telah diuji dengan menggunakan dua sumber bahan magnet iaitu bar magnet tetap dan solenoid dengan diameter dawai yang berbeza. Isyarat keluaran bagi setiap penderia fluxgate seterusnya diproses bagi mengenalpasti hubungannya dengan ketumpatan medan magnet
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Selective Laser Sintering of Polymer Nanocomposites
This paper describes the fabrication and characterization of polymer nanocomposite (PNC)
materials for use in the selective laser sintering (SLS) process. PNC materials are of great
interest generally because of their excellent physical properties, and offer excellent potential
in rapid manufacturing of structural polymeric parts. Three different nano additive materials
have been used: cerium oxide IV, yttrium stabilized zirconia, and layered Hectorite clay.
These materials have been used to reinforce PA6 polymer using solution blending and spray
drying to create powder with particle sizes in the range of 5-40 µm. The mechanical
properties and microstructure of the PNC materials have been evaluated and the results
compared to those of unfilled polymer.Mechanical Engineerin
Vibrational mechanics in an optical lattice: controlling transport via potential renormalization
We demonstrate theoretically and experimentally the phenomenon of vibrational
resonance in a periodic potential, using cold atoms in an optical lattice as a
model system. A high-frequency (HF) drive, with frequency much larger than any
characteristic frequency of the system, is applied by phase-modulating one of
the lattice beams. We show that the HF drive leads to the renormalization of
the potential. We used transport measurements as a probe of the potential
renormalization. The very same experiments also demonstrate that transport can
be controlled by the HF drive via potential renormalization.Comment: Phys. Rev. Lett., in pres
Current reversals in a rocking ratchet: the frequency domain
Motivated by recent work [D. Cubero et al., Phys. Rev. E 82, 041116 (2010)],
we examine the mechanisms which determine current reversals in rocking ratchets
as observed by varying the frequency of the drive. We found that a class of
these current reversals in the frequency domain are precisely determined by
dissipation-induced symmetry breaking. Our experimental and theoretical work
thus extends and generalizes the previously identified relationship between
dynamical and symmetry-breaking mechanisms in the generation of current
reversals
Penerapan Model Pembelajaran Examples And Non Examples dalam Meningkatkan Hasil Belajar Siswa
: The title of this research is the application of the learning examples and non-examples in improving student learning outcomes in the eighth grade social studies integrated in MTs Nurul Falah Sukadana Kayong District North. with research problems how learning model examples and non examples can improve student learning outcomes in the eighth grade social studies integrated in MTs Nurul Falah Sukadana Kayong District Nort. Method used was action research, which consists of 4 actions including planning, implementation, observation and reflection. Research aims to improve student learning outcomes in the eighth grade social studies integrated in MTs Nurul Falah Sukadana through model examples and non-examples of learnig. The results showed that the studies VIII Integrated MTs Nurul Falah Sukadana
Perfectly normal type-2 fuzzy interpolation B-spline curve
In this paper, we proposed another new form of type-2 fuzzy data
points(T2FDPs) that is perfectly normal type-2 data points(PNT2FDPs). These
kinds of brand-new data were defined by using the existing type-2 fuzzy set
theory(T2FST) and type-2 fuzzy number(T2FN) concept since we dealt with the
problem of defining complex uncertainty data. Along with this restructuring, we
included the fuzzification(alpha-cut operation), type-reduction and
defuzzification processes against PNT2FDPs. In addition, we used interpolation
B-soline curve function to demonstrate the PNT2FDPs.Comment: arXiv admin note: substantial text overlap with arXiv:1304.786
310 Bone mineral density measurement in cystic fibrosis patients with CFTR I1234V mutation in a large kindred family in Qatar
Further analysis of burkholderia pseudomallei mf2 and identification of putative dehalogenase gene by pcr
Halogenated organic compounds are extensively and widely used as pesticides, herbicides, and antibiotics that contribute to the pollution. This research was aimed to further analyze and characterize a bacterium that has the ability to utilize 2,2-dichloropropionic acid (2,2-DCP) as a model to study dehalogenase enzyme production. Microscopic observation, biochemical tests and PCR technique were carried out in order to characterize the isolated bacterium. Strain MF2 showed its ability to grow on 10 mM 2,2-DCP liquid minimal medium with doubling time of 13 h with maximum chloride ion released of 19.8 μmolCl–/mL. The 16S rDNA analysis suggested that strain MF2 belongs to the genus Burkholderia. This was supported by the microscopic observation and biochemical tests. Dehalogenase gene was observed when using only primers dehIfor1 and dehIrev2 derived from group I deh PCR primer sequences, whereas no amplification using dhlB-314-forward and dhlB-637-reverse (group II dehalogenase) and haloacetate dehalogenase (H2-1157-forward and H2-1662-reverse) PCR primer sequences. The results suggested that, possibly, dehalogenase from MF2 was related to group I deh. In conclusion, strain MF2 showed the ability to utilize 2,2-DCP as sole source of carbon and energy. Further analysis revealed the MF2 strain consisted of dehalogenase gene that could be used for degradation of man-made halogenated compounds present in the environment. Using existing dehalogenase PCR primers, it was possible to amplify the dehalogenase genes sequence
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