Materials Literature
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This paper reports the utilization of plasmonic properties of Gold Nanoparticles (GNPs) as an optical sensor to detect pesticides in water. The pesticides with trade name of Ridomil G MZ 68 WP fungicide and Water-Dispersible Granules WG insecticide were used in this study. Spherical GNPs of the average size of ca. 31±…
Polyaniline-copper (PANI-Cu) and polyaniline-silver (PANI-Ag) composites were prepared by electrical explosion of wire (EEW) in presence and the absence of polyacrylic acid (PAA) surfactant. Structure characteristics of the composites were studied by field emission scanning electron microscope (FE-SEM), X-ray diffract…
Based on nonempirical calculations of the Au 32 cluster, it is found that excited states from which only the quadrupole transition to the ground state is possible arise upon excitation of gold nanoparticles by photons with energies exceeding the minimum energy gap between occupied and vacant states. The possible role…
Kurzfassung In dieser Arbeit sind erste Ergebnisse einer Untersuchung des Einflusses der Mikrostruktur auf die Ermüdungsschädigung der Aluminiumgusslegierung EN AC-Al Si7Mg0,3 zusammengestellt. Hierzu erfolgte zunächst die Herstellung korngefeinter und veredelter Probestäbe durch Abgießen in eine Stahlkokille. Mit gez…
Determination of potential and electrical field distribution in the vicinity of model electrode setups may be helpful in the deduction about the influence of paper insulation on HV electrode on the mechanism of initiation and propagation of electrical discharges in mineral oil. The attempt of confirmation of the hypot…
This paper deals with the development of an experimental workbench to evaluate stator cores of fractional induction motors. The bench is able to evaluate the quality of the stator core in terms of the magnetic material, dimensions as well as manufacture faults like short-circuit between laminations. It is shown the st…
Providing variable load for testing a motor in high speed conditions is usually a difficult task. The eddy current brake can be used in application of load testing of motors. This paper deals with construction of a novel claw pole eddy current brake which is employed as a load for a DC counter rotating motor (CRM). Th…
Periodical changes in the magnetic field of a synchronous generator, and its mechanical or electrical unbalances, have effect on the armature voltage, current and electromagnetic forces. Determination of these values during the design stage of a machine gives insight in its possible operation problems, and enables the…
Finite element method is numerical techniques which provide solution to a problem that are difficult to obtain or the experimentation is unpractical. In medical practices, fracture of a bone would involve high-speed tools or drill. The drilling process would have sets of parameter that would in turn influence thermal…
Hydrogen is playing an increasingly important role in the renewable energy mix, why is why Acta has been focusing on cost-effective and efficient hydrogen generation through its alkaline electrolyser technology. Acta now has products ready for commercialisation in mass market applications such as light vehicle refuell…
A fabrication technique using dielectrophoresis is demonstrated to align semiconducting single-walled carbon nanotubes (s-SWCNTs) and improve electronic devices performance. The proposed method produces highly dense aligned nanotubes (>;40 s-SWCNTs/μm) and low sheet resistance (<;10 KΩ/□).
The protection of tall structures against direct lightning strikes is usually provided by the installation of a lightning rod of the determined height on the top of the structure. The tip of the rod instead of the top of the structure becomes the point of the initiation of the upward lightning or intercepts the downwa…
In the WIMSD-IAEA multigroup nuclear data library, the isotopes and weights adopted for WLUP libraries to calculate the average fission spectra for 235U, 238U, and 239Pu are in the ratio of 54%, 8%, and 38%, respectively. The average fission neutron spectrum in the existing multigroup WIMSD-IAEA library applicable for…
We experimentally detect lung cancer cell lysates with high sensitivity down to 2 cells per microliter with silicon based photonic crystal microcavity sensors. Label free specificity is achieved via sandwiched assays and simultaneous multiplexed detection.
The marine corrosion of aluminium alloys, AA1100 and AA6061 was investigated in term of the transient of the open circuit potential and polarization behaviors in a simulated marine condition. The pitting potential increased with dilution ratios of artificial seawater. The aluminium alloys passivated at lower potential…
Morphology controllable hexaphenylsilole hierarchical homo-aggregations have been prepared by the self-assembly method in this paper. Tuning the solvent parameters can significantly affect the morphologies of the resulting HPS aggregations. The solvent properties play an important role in the shape-controlled synthesi…
We have investigated the carrier transport mechanism for nonalloyed Ni/Au ohmic contacts to p-In0.15Ga0.85N/GaN superlattices (SLs) and Mg delta (δ)-doped GaN using current–voltage–temperature (I–V–T) and specific contact resistance–temperature (Rsc–T) data. The p-SL and Mg δ-doped GaN contacts show a linearI–Vbehavio…
Winding failure in PMSM motor can generate high braking torque in safety critical applications, where the motor was incorporated to provide assisting motoring torque. In this paper, a simple circuit-based model is presented to analytically analyze the braking torque under possible winding failure conditions. Finite el…
Sebagian besar kapal kayu di Indonesia dibangun oleh galangan kapal tradisional yang pembangunannya tanpa dilengkapi perencanaan dan perhitungan. Pada umumnya proses pembangunan kapal berdasarkan pada pengetahuan turun-temurun. Artikel ini merupakan hasil penelitian yang dilakukan untuk mengetahui apakah ukuran konstr…
Se evaluó la actividad antituberculosa del extracto hexánico de Carya i/linaensis (CIH) y dos de susfracciones, metanólica (CIFM) y no metanólica (CIFNM), identificando las moléculas responsables de esta actividad. Tanto CIH, como CIFM y CIFNM presentaron actividad antituberculosa a una concentración de 125 ~g rnl.'.…