著者
高柳 昌弘
出版者
日本マイクログラビティ応用学会
雑誌
日本マイクログラビティ応用学会誌 (ISSN:09153616)
巻号頁・発行日
vol.28, no.1, pp.18, 2011-01-31 (Released:2021-01-21)
参考文献数
2

Japan Aerospace Exploration Agency (JAXA) has completed the construction of Japanese Experiment Module (JEM) or “KIBO”, i.e. the nickname of JEM, on orbit till 2009 after three times STS flights. The Exposed Facility of JEM (JEM-EF) is one of the most characteristic accommodations on ISS to provide an environment directly exposed to the outer space. JEMEF is expected to be suitable for experimental missions of a wide variety of field such as earth and space sciences and technological development. In this paper, JEM-EF and its payload are outlined, the interface between them and some significant constraints which must be taken into consideration on using JEM-EF are also discussed. Four missions now on JEM-EF and two being prepared for next utilization stage are introduced. I close this paper by the discussion of the strategies to make JEM-EF utilization be wider and more fruitful.
著者
木下 恭一 荒井 康智 稲富 裕光 塚田 隆夫
出版者
日本マイクログラビティ応用学会
雑誌
International Journal of Microgravity Science and Application (ISSN:21889783)
巻号頁・発行日
vol.34, no.1, pp.340113, 2017-01-31 (Released:2020-05-14)
参考文献数
25

Total of four SiGe crystal growth experiments by the traveling liquidus-zone (TLZ) method have successfully been performed aboard the “Kibo” in 2013 and 2014. Results show that the TLZ method is a powerful method for growing compositionally uniform mixed crystals. On the ground, convection in a melt stops crystal growth and long crystals are difficult to be grown, while in microgravity long and large homogeneous crystals are grown in the diffusion limited regime. Step temperature change by 1 ℃ during crystal growth resulted in interface marking and growth rates in the axial and radial directions were measured precisely. Growth conditions for achieving radial uniformity were obtained. Growth instability at the initial stage was made clear, which was observed in microgravity for the first time. It is shown that convection in a melt has a merit of avoiding such instability.
著者
正木 匡彦
出版者
日本マイクログラビティ応用学会
雑誌
International Journal of Microgravity Science and Application (ISSN:21889783)
巻号頁・発行日
vol.35, no.4, pp.350405, 2019 (Released:2019-12-18)

A high power laser, such as CO2 or LD, is necessary for the sample heating in the container less processing. The high power laser is expensive generally, therefore that interrupt the spread of the container less processing of high temperature condition. Recently, a glass tube CO2 laser is provided, which is used as a heat source of computer controlled laser cutter. The glass tube CO2 laser is quite inexpensive, however we can hardly find the information of how to use it. Then, I actually bought the CO2 laser whose maximum output is 100 watt and try to set up it by myself with trial and error for testing the performance. I describe a way to the setup and the result of the first emission of this laser.
著者
遠藤 雅人 竹内 俊郎
出版者
日本マイクログラビティ応用学会
雑誌
International Journal of Microgravity Science and Application (ISSN:21889783)
巻号頁・発行日
vol.30, no.2, pp.111, 2013-04-30 (Released:2020-05-14)
参考文献数
26

Artificial fish production is one of the important food supply system in the world. On the other hand, aquaculture has been a pollutant source of natural water environment in no small part. This explanation introduces closed recirculating fish culture system which is expected to develop the aquaculture technology and improve economy further. The system has a lot of advantages including environmental conservation and food safety compared with other aquaculture systems. Furthermore closed ecological recirculating aquaculture system using artificial food chains is explained for the futural situation of aquaculture in space as the derivative technology with our accumulated knowledge on the management of the artificial food chain, rearing systems and postural control mechanism of aquatic animals under various gravity environments. Finally, the direction of future perspective for aquaculture function, technology and economics is discussed from the aspect of eco-engineering.
著者
栗木 恭一 佐々木 進 横田 力男
出版者
日本マイクログラビティ応用学会
雑誌
日本マイクログラビティ応用学会誌 (ISSN:09153616)
巻号頁・発行日
vol.14, no.3, pp.211, 1997-07-31 (Released:2021-01-21)
参考文献数
7
被引用文献数
2

The Space Flyer Unit (SFU) is an unmanned free flyer flown in orbit from March 18, 1995 to January 20, 1996. Space environments such as microgravity and surrounding atmospheric condi­tions were monitored and are reviewed as reference for future missions. Engineering impacts of microgravity on spacecraft are also reviewed including post flight analyses.
著者
夏井坂 誠
出版者
日本マイクログラビティ応用学会
雑誌
International Journal of Microgravity Science and Application (ISSN:21889783)
巻号頁・発行日
vol.30, no.1, pp.64, 2013-01-31 (Released:2020-05-14)

The lecture introduces how to make a microcomputer-controlled, electronic device for a beginner. A series of lectures provides not only how to measure a physical property with an electronic sensor, convert it to a digit (analog digital conversion), switch on and off an electronic circuit with FET (Field Effect Transistor), and control those with a microcomputer but also practical know-how to design an actual electronic circuit, choose appropriate electronic parts, and mount those to a PCB (printed-circuit board), with explaining how to make “an acceleration switch”. The switch can automatically turn on and off a connected device according to an acceleration level measured with an acceleration sensor and contribute to parabolic flight experiments through size reduction of an apparatus, less operation, and precise control of the experiments.
著者
夏井坂 誠
出版者
日本マイクログラビティ応用学会
雑誌
International Journal of Microgravity Science and Application (ISSN:21889783)
巻号頁・発行日
vol.30, no.2, pp.120, 2013-04-30 (Released:2020-05-14)
参考文献数
3

The lecture introduces how to make a microcomputer-controlled, electronic device for a beginner. A series of lectures provides not only how to measure a physical property with an electronic sensor, convert it to a digit (analog digital conversion), switch on and off an electronic circuit with FET (Field Effect Transistor), and control those with a microcomputer but also practical know-how to design an actual electronic circuit, choose appropriate electronic parts, and mount those to a PCB (printed-circuit board), with explaining how to make “an acceleration switch”. The switch can automatically turn on and off a connected device according to an acceleration level measured with an acceleration sensor and contribute to parabolic flight experiments through size reduction of an apparatus, less operation, and precise control of the experiments.
著者
夏井坂 誠
出版者
日本マイクログラビティ応用学会
雑誌
International Journal of Microgravity Science and Application (ISSN:21889783)
巻号頁・発行日
vol.30, no.4, pp.182, 2013-10-31 (Released:2020-05-14)
参考文献数
3

The lecture introduces how to make a microcomputer-controlled, electronic device for a beginner. A series of lectures provides not only how to measure a physical property with an electronic sensor, convert it to a digit (analog digital conversion), switch on and off an electronic circuit with FET (Field Effect Transistor), and control those with a microcomputer but also practical know-how to design an actual electronic circuit, choose appropriate electronic parts, and mount those to a PCB (printed-circuit board), with explaining how to make “an acceleration switch”. The switch can automatically turn on and off a connected device according to an acceleration level measured with an acceleration sensor and contribute to parabolic flight experiments through size reduction of an apparatus, less operation, and precise control of the experiments.
著者
夏井坂 誠
出版者
日本マイクログラビティ応用学会
雑誌
International Journal of Microgravity Science and Application (ISSN:21889783)
巻号頁・発行日
vol.30, no.3, pp.152, 2013-07-31 (Released:2020-05-14)
参考文献数
5

The lecture introduces how to make a microcomputer-controlled, electronic device for a beginner. A series of lectures provides not only how to measure a physical property with an electronic sensor, convert it to a digit (analog digital conversion), switch on and off an electronic circuit with FET (Field Effect Transistor), and control those with a microcomputer but also practical know-how to design an actual electronic circuit, choose appropriate electronic parts, and mount those to a PCB (printed-circuit board), with explaining how to make “an acceleration switch”. The switch can automatically turn on and off a connected device according to an acceleration level measured with an acceleration sensor and contribute to parabolic flight experiments through size reduction of an apparatus, less operation, and precise control of the experiments.
著者
ODAWARA O. ANZAWA S. TANJI A. NAKAMURA T. YODA S. SAMEJIMA H.
出版者
日本マイクログラビティ応用学会
雑誌
JASMA : Journal of the Japan Society of Microgravity Application (ISSN:09153616)
巻号頁・発行日
vol.12, no.1, pp.11-18, 1995-02-20
参考文献数
5

Combustion synthesis technology can be advantageously applied to high-temperature experiments under microgravity environments(MOE) not only as a direct synthesizing method for high-temperature materials but also as a super-heating chemical oven, because it is possi­ble to get high temperatures more rapidly compared to conventional electric furnaces. In the present work, the combustion synthesis of ZrO2-A}zO3-Fe and TiB2-Al-B composite systems have been carried out using a TR-IA sounding rocket which provides about 10- 4 g0 for six minutes. As the former result, more uniform distribution and finer particles of ZrO2 could be attained under MOE, which would be caused from no disturbance in mass migration. As the latter, the composite layered particles composed of TiB2 and Al-B system synthesized under MOE were more uniform compared to those obtained on earth, which would result in the formation of denser cermet-like products.
著者
新井 真由美
出版者
日本マイクログラビティ応用学会
雑誌
International Journal of Microgravity Science and Application (ISSN:21889783)
巻号頁・発行日
vol.30, no.2, pp.105, 2013-04-30 (Released:2020-05-14)
参考文献数
18

Caves and lava tubes have been discovered at several areas based on remote sensing data and orbital imagery. Caves and other underground spaces moderate extreme temperatures - cooler in daytime and warmer at night. Early man used such spaces for habitation in areas with extreme climates for millennia. The assumption about these same structures on Mars would be the same; for moderating extreme temperatures, as well as possibly offering protection from space radiation and even Martian dust. Based on underground residences on Earth, I do consider that possibilities exist for underground habitation or even balanced-environmental habitation on Mars. In this study, I focus attention on the terrestrial cyanobacterium “Nostoc sp. HK-01”. I discuss what we need to know and how the function of Nostoc sp. can be used in Mars habitation.
著者
高橋 昭久 日出間 純 保田 浩志
出版者
日本マイクログラビティ応用学会
雑誌
International Journal of Microgravity Science and Application (ISSN:21889783)
巻号頁・発行日
vol.34, no.2, pp.340203, 2017 (Released:2019-12-25)
参考文献数
41

Space radiation is one of the major hazards for human health in space. Space radiation consists of various kinds of radiation including high energy heavy (HZE) ions; these complex radiation fields cannot be produced on the ground. In the International Space Station (ISS), exposure doses are approximately 200 times higher than on the Earth’s surface. On the Moon and Mars, the radiation level is high, due to HZE ions. While the ISS is in free fall, the Moon has 1/6, Mars 1/3 of Earth's gravity. Many aspects of the biological effect of the combination of the lower gravity environment and space radiation remain unclear. But the future mission is now being planned to go to the Moon and Mars. It is necessary to clarify the problem of biological effect and physical dosimetry and then to resolve them as soon as possible. With this thought, here we try to present a scenario of space radiation research for next decades.
著者
木部 勢至朗
出版者
日本マイクログラビティ応用学会
雑誌
International Journal of Microgravity Science and Application (ISSN:21889783)
巻号頁・発行日
vol.34, no.2, pp.340204, 2017-04-30 (Released:2019-12-25)
参考文献数
2

On the occasion of launching the Science Union of Human Planetary Habitation on Space, this document is intended to introduce related activities and possible contributions of the Society of Eco-Engineering. Having started its activity as a small research group on the Closed Ecological Life Support System(CELSS), the life support in space has been one of the main research topics in the society. Recently the society published “Handbook on CELSS and Eco-Engineering” to comemorate its 30th aniversary, which covers the space life support related issues as well as other important Eco-Engineering ones. In addition, it is going to organize several in-house groups on specific topics such as Life Support Technology in Space, Aquaponics, Biomass Utilization, etc. and some of which are expected to work as a counter part for close communication and collaboration with the union.