[en] This paper gives general information on the subject of the transport of radioactive material in Taiwan. The responsibilities and tasks of the competent authorities for the transport of radioactive material, that is, the Atomic Energy Council (AEC www.aec.gov.tw) and the Ministry of Transportation and Communications (MOTC www.motc.gov.tw) are introduced. Regulations applied to different modes of transport and other regulatory requirements related to transport of radioactive material are described. The different levels of service to organise the transport of radioactive materials are also described. (author)

[en] The heat capacity of racemic 4-(2'-methylbutyl)phenyl-4'-n-nonyloxybiphenyl-4-carboxylate (2M4P9OBC) has been measured in the vicinity of SmC-SmI, SmI-SmG, and SmG-SmH phase transitions. The nature of the SmC-SmI transition will be discussed in the context of known microscopic pictures of each phase. In contrast to the continuous SmA-hexatic-B phase transition found in n-hexyl-4'-n-pentyloxybiphenyl-4-carboxylate, an asymmetric heat-capacity anomaly is identified in the SmC-SmI transition of 2M4P9OBC

[en] Experimentally high-resolution ac calorimetry measurments on a liquid-crystal compound exhibiting a smectic-A - smectic-C (SmA-SmC) phase transition which is shown to be mean-field-like is presented. In the light of this experimental result, a simple and convincing argument, based on the mean-field theory, is given to explain why non-mean-field critical exponents were obtained in many of the studies on the SmA-SmC transition. The theory not only gives an excellent fit to the data for temperatures below the transition temperature but also provides a qualitative prediction on the size of the deviation from the linear relationship between (T/sub c/-T) and the square of the order parameter. The predicted deviation is consistent with x-ray measurements on the order parameter of another liquid-crystal compound

[en] The effect on mitosis of a human hematopoietic cell line RPMI-1788 treated with a metal chelate (Zn⁺⁺) of meso-tetra (p-carboxyphenyl) porphine (Zn-TCPP) alone at various concentrations or in combination with gamma-irradiation at various doses were studied. The results showed that both Zn-TCPP and radiation were effective in interfering with normal mitosis and that the effect of radiation was relatively more effective. Data also suggest interacting effects between Zn-TCPP and gamma-irradiation. At low doses of radiation, Zn-TCPP potentiated the effect of radiation. The reverse seemed to be true at a high dose of radiation. The effects of two porphyrins (Zn-TCPP and hematoporphyrin) and radiation on chromosomes were also studied. Chromosomal aberrations characteristic of radiation were observed. The porphyrins were found not to be effective chromosome-breaking agents under the experimental conditions tested

[en] Previously published details of spectroscopic observations of CI Cyg in 1980 by the author and Ch. Fehrenbach are briefly outlined. The researchers have continued their observations and, during the summer of 1981, a number of spectra of the star were obtained at the Haute Provence Observatory, using a Marly spectrograph with a dispersion of 80 A mm^-1. The observed spectral changes between 1980 and 1981 are highlighted. (Auth./C.F.)

No abstract available

[en] In the past ten years, 273 voyages have been made to ship radwaste produced by nuclear power plants and Institute of Nuclear Energy Research (INER). It more or less lowers the problem of insufficient storage space in Taiwan. Although all organizations followed various regulations to operate the transportation, ten events occurred in marine transport. However, they were ordinary incidents and neither released any radiation to contaminate the environment nor caused any casualty. (J.P.N.)

[en] The specific heat of Gd near Tsub(c) is shown to scale with magnetic field in accordance with scaling law predictions. A surprisingly close agreement is found between the scaled data and the predictions of the spin-1/2 Heisenberg model. (Auth.)

[en] This paper discusses the Radwaste Administration Policy (ORAP) which first drafted by the Radwaste Administration (RWA), a subordinate organization of the Atomic Energy Council (AEC) of the Republic of China, and was approved by the Executive Yuan (Cabinet) on September 16, 1988. ORAP has laid down the guidelines for both radwaste administration by RWA and radwaste management by Taiwan Power Company (TPC or Taipower) and other radwaste producers. ORAP will govern radwaste-related activities in the Republic of China in the foreseeable future. The text of ORAP is shown in the Appendix of this paper

[en] The purpose of this research was to employ diamines and their quaternary derivatives as carrier molecules for gamma-emitting radiation. The diamine putrescine is widespread in nature and has been reported to selectively concentrate in the rat ventral prostate and pancreas. This study confirms the selective uptake of radioactivity in the rat ventral prostate, but not in the pancreas, following administration of [14C]putrescine. The radioiodinated analogues of putrescine showed no predilection for either of these organs. On the other hand, radioactivity associated with a radioidinated quaternary derivative (3) was found to accumulate in cartilaginous tissues such as trachea, intervertebral disks, and chondrosarcoma tumor in a manner similar to hexamethonium