We carried out high-resolution(FWHM=3' .3) HI 21 cm observations of the supernova remnant(SNR) PKS0607+17 and HII region S261 using Arecibo 305-m telescope. The observation was to investigate whether the high-velocity(HV) gas detected in the southern area of PKS0607+17 by Koo & Heiles(1991) is physically associated with the SNR or not. The velocity of the HV gas ranges from +64 km/s to +87 km/s, which is difficult to result from the Galactic rotation. The HV gas could be the gas accelerated by supernova blast wave. However, because the observation of Koo and Heiles(1991) was carried out using Hat Creek radio telescope(FWHM ≃ ≃ 36'), the association of the HV gas with the SNR could not be investigated. Using the Arecibo HI 21cm data, we have found that the HV gas appears m the southern part of the SNR and its velocity ranges from +61 km/s to +77 km/s. But the HV gas is scattered m the whole field, not only toward PKS0607+17 but also outside the SNR Accordingly the HV gas is probably not associated with the SNR, but is accidentally aligned along the same line of sight toward the SNR. Instead we have found that HI clouds at low velocities could be possibly associated with the SNR. In Arecibo HI 21cm channel maps the HI gas seems to surround the southern boundary of the SNR at VLSR VLSR = +19.6 ~ +40.2 km/s. But because the region of the Arecibo HI 21cm observation is not wide enough to examine the HI gas distribution, we investigated this area using the Berkely low-latitude HI survey data(Weaver & Williams 1974) too. There we found HI gas surrounding the radio continuum boundary of PKS0607+17 at VLSR VLSR = +21.6 ~ +258 km/s. It is possible that this HI gas is associated with the SNR, in which case, the velocity of the SNR Vo Vo ≃ ≃ +26 km/s, its distance d ≃ ≃ 12.5 kpc and its radius R ≃ ≃ 145 pc. If we assume that the expansion velocity is ~10 km/s, then the age of the SNR is ∼4.4×106 ∼4.4×106 years. PKS0607+17 could be one of the oldest SNRs in the Galaxy. We also studied HI propertities of the HII region S261, which is ∼1∘ ∼1∘ away from PKS0607+17. There has been no high-resolution m 21 cm observational study on S261. We discovered HI cloud located at the north-eastern part of S261 at VLSR VLSR = +5 km/s ~ +10 km/s, which is possibly associated with the HII region. The central velocity of the HI cloud VLSR VLSR = +7.2 km/s and the corresponding distance d = 1.5 kpc. This velocity is comparable to the radio recombination line velocities.

We present the recent results of an HI aperture synthesis mosaic of the Large Magellanic Cloud(LMC), made by combining data from 1344 separate pointing centers using the Australia Telescope Compact Array(ATCA). The resolution of the mosaiced images is 1'.0 (15 pc, using a distance to the LMC of 50 kpc). In contrast with its appearance at other wavelengths, the LMC is remarkably symmetric in HI on the largest scales, with the bulk of the HI residing in a disk of diameter 7.3 kpc. Outer spiral structure is clearly seen, though the features appear due to differential rotation, therefore transient in nature. A good correlation is seen between the supershells previously identified in Halpha (e.g. Meaburn 1980) and HI structures.

By comparison and analysis of the optical data of the two galactic clusters of Pleiades and h and x Persei and the radio data of the HI gas clouds which are related with those two clusters, the relative motions of those gas clouds with retpect to the two clusters were obtained. The three theories on the acceleration of HI gas cloud surrounding a star cluster by Blaauw. Oort and Spitzer, and Kahn were examined with the above obtained kinetic data of the Pleiades and the h and x Penei clouds. And it was shown that Blaauw's theory is applicable to the h and x Persoi clouds but not to the Pleiades, that Dart and Spitzer's theory can explain the motions of both clouds, and that Kahn's theory needs more improvement to be a complete one.

수은은 장거리 이동특성을 가지고 있어 국제적 공동대응 필요성이 지속적으로 제기되었다. 최근 수은의 관한 미나마타 협약이 채택되었으며, 이에 대한 비준을 추진하고 있다. 수은은 배가스 중에서 가스상, 입자상으로 존재한다. 가스상 수은은 산화수은과 원수수은으로 구분된다. 입자상 수은은 전기집진기, 여과집진기와 같은 먼지 제어장치를 통해 주로 제어된다. 산화수은은 입자상물질에 흡착되어 제어되거나, 습식방지시설에 의해 제어된다. 원소수은은 공정변수들에 의해 산화 및 흡착되어 제어된다. 이와 같이 기존 대기오염 방지시설은 수은의 동시제어(co-benefit)효과를 가지고 있다. 본 연구에서는 미세먼지를 제어하기 위해 개발된 HI-filter에서의 수은 화학종의 거동과 흡착제분사에 따른 영향을 확인하고자 하였다. 석탄 화력발전시설에 설치된 Pilot-scale HI-filter는 배가스 중 미세먼지를 99%이상 제어하였으며, 수은의 제어효율은 66.22%로 나타났다. HI-filter는 산화수은을 입자상물질로 전환시키는 비율을 증가시켰다. 이로 인해, HI-filter후단에서의 수은은 대부분 원소수은으로 존재하였다. 이후 원소수은을 제어하기 위해 HI-filter 전단에서 활성탄과 비산재를 분사하여 수은의 화학종과 수은제어효율을 비교하였다. 활성탄분사 시 원소수은은 활성탄에 흡착되었으며, 입자상수은이 80%이상으로 증가하였다. 이로 인해, 수은의 제어효율은 최대 92%까지 증가하였다. 비산재분사 시 원소수은의 산화반응은 촉진되었으며, 산화수은은 35%까지 증가하였다. 그러나 수은의 제어효율은 61%로 감소하였다. 하지만 HI-filter후단이 습식방지시설에 의해 산화수은은 제어될 수 있으며, 석탄 화력발전시설 전체의 수은제어효율은 크게 상승할 것으로 판단된다.

In this paper, firstly, from the input-output perspective of technological innovation, technological innovation process is divided into technological development process and technological achievements transformation process. On this basis, technological innovation efficiency can be decomposed into technological development efficiency and technological transformation efficiency. Secondly, on the basis of the two-stage technological innovation, by analyzing each stage in the process of technological innovation input and output elements, we design the input-output index system in each stage respectively, and ultimately get the high-tech industrial technology innovation efficiency evaluation index system. Thirdly, we build a chain network DEA model to evaluate the two-stage process of technological innovation of high-tech industry, include the overall efficiency of technological innovation and the efficiency of the two sub-stages. Finally, use chain network DEA model to calculate the technology innovation efficiency, technological development efficiency and technological transformation efficiency of high-tech industry of China's 25 regions in 2000-2010. According to the calculation results of h the empirical analysis of the efficiency of technological innovation of China's high-tech industry, and provide a reference for the provision of policy advice.

In this paper, evaluated on the effect of high temperature history on the resistance to freeze-thaw of concrete. As a result, The concrete subjected to high temperature history at 50℃ and 70℃ showed good of the resistance to freezing and thawing.

In this paper, we designed and fabricated the Electromagnetic(EM) wave absorber for an Electronic Toll Collection(ETC or Hi-pass) system by using Amorphous metal powder and CPE. The material properties and the absorption properties of the samples containing 50 wt.%, 60 wt.%, 70 wt.%, and 80 wt.% of Amorphous. Moreover, the EM wave absorption abilities were simulated for the different thicknesses of the EM absorbers by adopting the measured permittivity and permeability, and then the EM wave absorber was fabricated based on the simulated design values. As a result, the EM wave absorber with the composition of Amorphous metal powder : CPE = 50 : 50 wt.% with the thickness of 2.6 mm has excellent absorption ability more than 40 dB at 5.8 GHz.

본 연구에서는 최근 계단공사의 시공성 개선을 위하여 새롭게 제안된 Hi-Form 접합부를 대상으로 동특성 정보를 이용하는 계확정기법을 응용하여 접합부의 강성평가를 수행하였으며 해석 시 동 접합부의 합리적인 모델링기법을 제시하였다. 실험 및 해석결과, 균열패턴 및 하중-변형관계 그리고 손상분포로부터 Hi-Form 접합부는 완전한 응력전달을 위한 강접합으로 간주하기 어려운 것으로 나타났으며, 실험결과에 근거하여 Hi-Form 접합부를 약 50%의 강성감소 요소로 모델링 할 것을 제안하였다.