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Magnetic structure of the antiferromagnetic state of DCNQI-Cu salts

K. Hiraki; Y. Kobayashi; T. Nakamura; T. Takahashi; S. Aonuma; H. Sawa; R. Kato; H. Kobayashi International Conference on Science and Technology of Synthetic Metals, 1994

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Influence of Surfactant-Tween80 on Degradation of Benzo(a)Pyrene and Its Accumulated Metabolites by Bacillus-07

Shuyan Zang; Panpan Li 2010 4th International Conference on Bioinformatics and Biomedical Engineering, 2010

Two degradation metabolites of benzo(a)pyrene(BaP), cis-BP4,5-dihydrodiol and cis-BP7,8-dihydrodiol, were identified using high performance liquid chromatography (HPLC) with standards. Both BaP and the two metabolites were well-known toxic compounds. The effect of a nonionic surfactant-Tween80 (TW80) on the degradation of the above three compounds by Bacillus-07, in aqueous phase, was studied. The result showed that (1) Solubility of the three compounds ...

New optical sensor for volatile organic compounds (VOC) using birefringent porous glass

E. Pinet; M. Vachon-Savary; S. Dube Proceedings of IEEE Sensors, 2004., 2004

Changes observed in polarized light transmission through an anisotropic material, such as birefringent porous glass, upon contact with air bearing vapors of volatile organic compounds serve as the basis for a very sensitive broadband chemical sensor. When properly designed, vapor sensors based on such porous glasses show changes in transmitted light intensity or spectral content (color) detectable by eye. When ...

High speed UV laser induced fluorescence system for the detection of organic compounds using multi beam excitation

V. Sivaprakasam; D. K. Killinger Lasers and Electro-Optics, 2002. CLEO '02. Technical Digest. Summaries of Papers Presented at the, 2002

Summary from only given. A high PRF (8 KHz), 266 nm laser induced fluoresccnce (LIF) system has been modified using a multi-beam geometry to enhance its sensitivity. The system uses a gated PMT and 13 channel interference filter for the collection of the fluorescence emission. The system has been shown to have a sensitivity for the detection of quinine sulfate ...

Ground state properties og high spin Mn/sub 12/O/sub 12/ molecule in organic compound

S. Y. Wang; L. J. Zou; Q. Q. Zheng; X. G. Gong 1998 IEEE International Magnetics Conference (INTERMAG), 1998

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• Excitable Tissue

  The nervous system includes voluntary and autonomic (sympathetic and parasympathetic) systems. This book is devoted almost entirely to the voluntary system. The system consists mostly of excitable tissue - sensory receptors, neuron cell bodies, axons, and muscle fibers. If you step on a sharp object, it stimulates sensory receptors that in turn stimulate neurons; the latter send action potentials (APs) via axons to interneurons and motoneurons in the spinal cord. The motoneurons send APs to the appropriate muscles, which contract so as to make you jump off the object. Some of the activity involves atomic dimensions and, because distances are so small, time intervals are correspondingly small. It takes a factor of about 107 to transform atomic distances into dimensions that are familiar to us. For example, most atoms and simple compounds, if magnified by 107, turn out to be 3 mm (0.12 in.) in diameter. One centimeter multiplied by 107 equals 100 km (62 mi.). In time, one second multiplied by 107 is almost equal to 4 months. Sensory receptors are usually at rest when they are unstimulated. Neuron cell bodies are at rest when they are not generating APs, while muscle fibers and axons are at rest when they are not carrying APs (that is, no APs are propagating along the muscle fiber or axon). Body tissues are bathed in fluid that has an excess of sodium and chloride ions. Internally, excitable tissue at rest has an excess of potassium and large organic negative ions. This external-internal combination forms a battery that makes the inside of the tissue 60 to 90 mV more negative than the outside. The electric field across the membrane is very high - up to 12,000 V/mm. The physiologically compatible ionic concentrations are maintained by sodium and potassium pumps.

• Electronic Materials

  This chapter traces the increasing number of materials used in electronic devices over time. The main areas covered are silicon device technology, compound semiconductor device technology, and displays. In each area, the elements of the periodic table which are used in the production of these devices are shown. The main device types in the silicon area includebipolar and metal-oxide-silicon (MOS) silicon transistors for integrated circuits, power devices, and photovoltaic devices. In the compound device area, metal- semiconductor field-effect transistors (MESFETs), high electron mobility transistors (HEMTs), and heterojunction bipolar transistor (HBTs)compound semiconductor are described. Optoelectronic and photovoltaic devices are briefly addressed. In the display area, cathode ray tubes as well as modern flat panel display technology is covered, such as plasma display panels (PDPs), liquid crystal displays (LCDs), electrophoretic displays, and organic light emitting diode displays (OLEDs). Combined, well over 50 elements are used to produce these devices.