Biomedical subjects

Lan Fu

Publications and source records attributed to Lan Fu.

5 recordsLinked to original sources

PubMed2005

[Development of a special controlled-releasing long effect fertilizer used in controlled ecological life support system].

OBJECTIVE: To develop a special controlled-releasing long effect fertilizer (SCRLEF) for growing higher plant in controlled ecological life support system (CELSS). METHOD: First, a plan was designed. According to requirements, some original fertilizers were chosen and compounded in proper proportions, and a granule product was obtained and encapsulated in certain materials to form SCRLEF. Then, experiments were done by measuring the content and releasing-rate of the fertilizer, and cultivating plants with the fertilizer. RESULT: The fertilizer contains nutrients for plant growing, such as: N 18.0%, P2O5 14.3%, K2O 12.6%, Ca 2.6%, S 3.5%, Mg 0.12%, and other micro-nutrients. The granules of the SCRLEF are uniform in size with diameters form 2.5 mm to 4.0 mm. Under 20-25 degrees C, the cumulative amounts of released nutrients from the fertilizer in 10 d, 20 d, 30 d, 40 d, and 50 d, are 7.9%, 21.6%, 40.5%, 50.2%, 60.9% respectively, within 10 d, 20 d, 30 d, 40 d, 50 d. By cultivating lettuce with the fertilizer, we found that the vegetable could grow normally, and there wasn't any deficiency symptom in the plants within 45 d. CONCLUSION: The design consideration of the SCRLEF is reasonable. The fertilizer provides total nutrients for plant growing, and can be used to supply the required nutrients for the plants grown in the CELSS.

Culture Media↗

PubMed2004

[Development of a ground-based experimental facility for space waste material processing with microorganism].

OBJECTIVE: To develop a ground-based experimental facility for microorganism waste processing, which will be used to recover nutrient from plant inedible biomass essential for growth and development of plants. METHOD: After technical parameters and performance requirements were defined, planning demonstration, drawing design, fabrication, debug and plant inedible residue-biodegradation tests by microorganisms were conducted. RESULT: The facility worked well, and the parameters, such as energy consumption, volume and weight, met the design requirement. The water-treated quality and the ability of treating plant residual by microorganism were better than the demands. The ground-based results demonstrated that total organic carbon (TOC) degradation above 92.1%, and chemical oxygen demand (COD) reduction over 95.5% could be maintained. CONCLUSION: The facility has reasonable technical indexes, and smooth and reliable performances. Its major working principle is suitable for the demand of space conditions. It is capable of being utilized for biodegradation of plant inedible biomass in space.

Aspergillus niger↗

PubMed2003

[Environmental control and life support system of spacecraft].

Environment control and life support system is a very complicated and important subsystem of manned spacecraft. It is a key technology must be broken through for the realization of manned space flight. Its functions, technical requirements and main technology were reviewed in this paper. Its test verification was also discussed.

Ecological Systems, Closed↗

PubMed2003

[Research and development of technique of regenerative environmental control and life support system].

Environmental control and life support system (ECLSS) is a critical subsystem of manned spacecraft that has the most typical characteristics of manned space flight. It is an indispensable safeguard for the life of astronaut in space. This article reviewed the main techniques and developments of oxygen and water closed loop recycling in regenerative environmental control and life support system. Through comparing and analyzing the current state of its space application as well as the strong and weak points of different technique routes, the directions of research and development of oxygen and water recycling technique for space station are proposed.

Air Conditioning↗

PubMed2003

[Progress in development and application of experimental facilities for life sciences on onboard the International Space Station].

The construction of the International Space Station (ISS) will be completed soon, and life sciences studies are important tasks to be carried out onboard. Therefore, various related facilities for life science flight experiments are being developed aimed at diverse objectives, and some of them were completed and passed ground-based simulation experiment or airplane parabolic flight tests, and to be arranged for implementation of spaceflight experiments. This article reviews comprehensively the recent progress in the development of various types of related experimental facilities and the onboard experiments, in the hope that it will provide reference for related fields of research.

Animals↗