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The existence of a platform at the stratosphere is expected to be the role to gain a foothold in space. When the platform is employed airship in, it is transported by advection due to its light-weight body. Thereupon, a mooring of platform is reasonable in order to incarnate fixed-point platform. Conception of a captive platform system is similar to the Rockoon one which rendered remarkable services for the space observation of the early days. Therefore, the application of captive platform system to the launch site is highly expected in order to realize the space transportation system with a large quantity and high frequency. In this study, the motion of a captive platform system constructed from an airship and a tether is analyzed in order to ensure that the motion of a captive platform system is practically incarnated. Moreover, the sensitivity of aerodynamic performance of the airship is observed. Consequently, the practically incarnated motion of a captive platform system has been identified under the condition of the storm environment. Furthermore, the reduction of the advection distance driven away by the storm has been quantitatively indicated under the different condition of aerodynamic performance of the airship.

Background. To address the cause(s) of the significant differences in chloride (Cl-) concentrations between point-of-care blood gas analyzers and central laboratory analyzers.Methods. Cl-concentrations measured simultaneously by a blood gas analyzer (ABL800 FLEX) and a central laboratory analyzer (Hitachi7600) were collected in patients with severe acidemia (pH<7.20) (n=32) and were examined for correlations between differences in Cl-and factors associated with the acid-base status. Cl-concentrations were measured with both analyzers for samples with different concentrations of lactate, inorganic phosphate, or bicarbonate (HCO3 −).Results. The differences in Cl-concentrations were correlated withHCO3 −concentrations (r=0.72,P<0.0001) and anion gap (r=0.69,P<0.0001). Only the addition ofHCO3 −proportionately increased Cl-levels measured by a Hitachi7600, but it did not affect those measured by an ABL800FLEX.Conclusion. Cl-measurements with some analyzers may be influenced byHCO3 −concentrations, which could result in the observed discrepancies.

Transfusion-related acute lung injury (TRALI) is currently the leading cause of transfusion-related death. A 67-year-old man with severe aplastic anemia developed TRALI, consisting of acute respiratory insufficiency with severe hypoxia and diffuse pulmonary infiltration 2 hours after the transfusion of platelet concentrates. Although he required intensive respiratory support, he promptly recovered within 4 days. The presence of anti-HLA antibody (anti-HLA B52) in the donated blood product was demonstrated, and a lymphocytotoxicity test disclosed antibody-mediated cytotoxicity against the patient's cells. Furthermore, administration of granulocyte-colony stimulating factor was suggested to predispose the patient to TRALI by priming the neutrophils.

A station-keeping platform in the stratosphere can be a novel foothold toward spaceactivities. If the platform is conformed as free-ight LTA vehicles, there are possibilitiesthat they may be blown away by the atmospheric advection due to its free-ight nature.Therefore, mooring this type of platform to the ground by a cable will be much easierto hold it in position. This concept of a captive platform system looks somewhat similarto rockoon systems which provided remarkably good services for the space observation inthe past days. Namely, application of a captive platform system to a rocket launch padis well expected to realize a space transportation system of ample payload capacity withmuch frequent services. In addition, this newly conceived system will have a wide spectrumrange of application elds such as agriculture, meteorology, communication, etc. However,several technical issues are identi ed to materialize such a captive stratospheric platform.In these studies, summary results are presented for each of these technical issue itemsregarding ight tests, tether system operation, and wireless communication experiment.Consequently, useful knowledge has been empirically acquired concerning the above issuesin order to construct a captive LTA stratospheric platform.

Hokkaido Satellite Project was kicked off at April in 2003 by the volunteer group that consists of students, researchers and engineers in order to demonstrate the space business models using nanosatellites of 15kg/50kg in Japan. The Hokkaido satellite named "TAIKI" is characterized by a hyperspectral sensor with a VNIR (visible and near infrared range) and a laser communication instrument for data downlink communication. At the beginning of 2008 we started to develop a space qualified hyperspectral sensor HSC3000 based on the optical design of HSC1700. Last year we developed the hyperspectral camera HSC-3000 BBM funded by New Energy Development Organization (NEDO) as the position of the breadboard model of HSC3000. HSC-3000 BBM is specified by the spectral range from 400nm to 1000nm, 81 spectral bands, image size of 640 x 480 pixels, radiometric resolution of 10 bits and data transfer rate of 200 f/s. By averaging outputs of several adjacent pixels to increase S/N, HSC3000 of the spaceborne is targeted at the specification of 30 m spatial resolution, 61 spectral bands, 10 nm spectral resolution and S/N300. Spin-off technology of the hyperspectral imager is also introduced. We have succeeded to develop a hyperspectral camera as the spin-off product named HSC1700 which installs both the hyperspectral sensor unit and a scanning mechanism inside. The HSC1700 is specified by the spectral range from 400nm to 800nm, 81 spectral bands, image size of 640 x 480 pixels, radiometric resolution of 8 bits and data transfer rate of 30 f/s.