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61.
A macroreticular poly(acrylic acid)-based resin with triazolethiol as the functional group has been synthesized. The stability of the resin in acidic media and the behaviour in sorption and desorption of various metal ions have been investigated and compared with those of the acylthiosemicarbazide resin which is an intermediate in synthesis of the triazolethiol resin. Both resins show high affinity for copper(II) silver, cadmium and mercury(II), and high selectivity for silver and mercury(II) at low pH (1–2), and even at pH 7 if EDTA is present. The triazolethiol resin sorbs metal ions faster than the acylthiosemicarbazide resin does and sorbs mercury(II) from high concentrations of acids and neutral salt solutions. This resin has been applied to the concentration of silver and mercury(II) from sea-water samples by column operation. 相似文献
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Diffusion coefficient of 36Cl in silver chloride was revealed to be about 1 x 10(-10)-4 x 10(-11) cm2 . s-1 in the range of 400 degrees C-200 degrees C by means of radioactive tracer measurements. Activation energy for diffusion was calculated about 0.13 eV. These results were different from those obtained by Maurer and Compton. 相似文献
64.
W. Bartel L. Becker D. Cords R. Felst K. Hagiwara D. Haidt H. Junge G. Knies H. Krehbiel P. Laurikainen R. Meinke B. Naroska J. Olsson D. Schmidt P. Steffen G. Dietrich J. Hagemann S. Yamada 《Physics letters. [Part B]》1985,155(4):288-294
A search was performed for the associated production of two different Higgs bosons via a virtual Z0 in e+e? annihilation (e+e? → h10h20) using the JADE detector at PETRA. This was motivated by the interpretation of the monojet events observed at the CERN p collider as anomalous Z0 decays into two neutral Higgs bosons (h10 and h20), where h10 is stable and escapes detection while h20 decays into hadrons. Single- or di-jet events with large momentum imbalance are then expected at PETRA energies. No evidence for such events was found in our data; this excludes h20 masses in the range of 1 to 21 GeV with 95% CL, if the branching fraction for Z0 → h10h20 is a larger than one half that for . The possibility that the monojets could originate from supersymmetric higgsino production from Z0 decay is also examined. 相似文献
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Saito Toshihide Widayat Wiwin winiati Hagiwara Kazuyoshi Murakami Yukio 《Analytical and bioanalytical chemistry》1984,319(4):433-434
Analytical and Bioanalytical Chemistry - 相似文献
67.
Akira Tsunemi Koji Hagiwara Noribito Saito Keigo Nagasaka Yasuaki Miyamoto Osamu Suto Hideo Tashiro 《Applied Physics A: Materials Science & Processing》1996,63(5):435-439
For high-speed metal surface cleaning, we applied TEA CO2 laser pulses to ablate painted materials on metal surfaces and examined the efficiency of removal under different surface and irradiation conditions. Surfaces treated with a line-focused laser beam were analyzed with an energy dispersive X-ray analyzer and inspected with optical microscopic observation. Although paints were selectively ablated from the metal surface, the cleaning efficiency was found to depend on surface conditions of substrates. An application of a small amount of dimethyl formamide was effective for completely removing of resin without scorching the surface. 相似文献
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