used excavator These 'space specialties' will reveal the mysteries of life sciences

Release date 2024-11-28 19:34:25 Reading 0

　　These 'space specialties' will reveal the mysteries of life sciencesused excavator for sale

　　On November 4th, a batch of life science experimental samples including zebrafish culture medium, methanogenic archaea, radiation resistant microorganisms, and amino acids were successfully returned to Earth aboard the Shenzhou 18 spacecraft.used excavator for sale used excavator for sale

　　Due to the requirement of biological activity, these "space specialties" were transferred from the landing site to the Space Application Engineering and Technology Center of the Chinese Academy of Sciences in Beijing for the first time. As the overall unit of the space application system of the manned space project, the Space Application Engineering and Technology Center of the Chinese Academy of Sciences inspected and confirmed the basic status of the returned life experiment samples, and then delivered them to scientists for follow-up research.used excavator for sale used excavator for sale

　　Breakthrough in space cultivation of vertebrates through zebrafish farming in space

　　In May of this year, "raising zebrafish together with astronauts" became a hot topic of discussion. According to Dr. Zhang Xianyuan from the Institute of Aquatic Biology of the Chinese Academy of Sciences, researchers build a small aquatic ecosystem composed of zebrafish and goldfish algae.

　　On April 25, 2024, the small aquatic ecosystem was launched into the Chinese space station aboard Shenzhou 18 and installed in the life ecological cabinet of the Wentian module for space experiments. The experiment was planned to last for 30 days, and the actual stable operation of the ecosystem space was completed for 44 days. During the in orbit operation, the astronauts conducted three water sample collections, one fish food box replacement, and one fish egg collection box dismantling operation.used excavator for sale used excavator for sale used excavator for sale used excavator for sale

　　This experiment achieved a breakthrough in the cultivation of vertebrates in space in China and found that the spatial environment has a significant impact on the movement behavior of zebrafish. In the future, we will conduct detailed analysis of the descending samples and conduct in-depth research on aquatic ecosystems based on measured data. We expect to gain new insights into the material cycling mechanisms of aquatic ecosystems in spatial environments, "said Zhang Xianyuan.

　　Three archaea are expected to reveal the mystery of methane sources on Marsused excavator for sale used excavator for sale

　　Among all archaea, methane producing archaea are the most notable. They are one of the earliest prokaryotic microorganisms on Earth, capable of degrading organic matter into methane in anaerobic environments. Among the scientific experiment samples returned this time, there are three methane producing archaea.

　　We conducted a study on the radiation damage and adaptability of anaerobic archaea in space, verifying the adaptability of three methane producing archaea in simulating Martian gravity, microgravity environment in space, and cosmic radiation conditions, "said Cui Duo, an assistant researcher at the Department of Earth System Science at Tsinghua University. This study was conducted simultaneously in the spacecraft, extravehicular, and ground laboratories, forming a comparative experiment between Earth, simulated Martian gravity, microgravity in space, and cosmic radiation.used excavator for sale used excavator for sale

　　The samples inside the cabin were carried out using the small centrifuge module of the Wentian Cabin Life Ecology Experiment Cabinet. The experiment began on January 19, 2024, when the small centrifuge was installed, and ended on August 20, 2024, when it was removed from the small centrifuge. After the experiment is completed, the experimental samples are stored in a 4 ℃ low-temperature pre cooling device and wait for downward movement. The extravehicular samples were carried out using the Life Radiation Exposure Device of the Dreamsky Cabin. The experiment began on April 2, 2024, and on September 27, the experimental samples were successfully returned to the cabin and placed in a 4 ℃ low-temperature pre cooling device, waiting to descend.used excavator for sale used excavator for sale

　　Next, we will validate the differences in phenotype, genetics, transcription, and protein levels of the samples, hoping to reveal the mechanism of methane production on Mars and the possibility of life in extreme extraterrestrial environments, "said Cui Duo.used excavator for sale

　　Assessment of the possibility of interstellar transmission of life by extreme microorganismsused excavator for sale

　　Can extreme microorganisms survive in space? The answer to this question may be about to be revealed. This time, a total of 215 extreme microbial samples returned to Earth with Shenzhou 18.used excavator for sale

　　"Some of these samples are radiation tolerant microorganisms, lithophytic microorganisms and lichens that live in extreme environments in nature. They are mainly used to study the survival limit of life in space environment, explore the ability of these extreme environmental microorganisms to expand into outer space, assess the possibility of interstellar propagation of life on the earth, verify the hypothesis that rocks have biological origin, and explore the anti stress resources of extreme environmental microorganisms at all levels," Zhang Gaosen, associate researcher of the Northwest Institute of Ecological Environment and Resources of the Chinese Academy of Sciences, told reporters.used excavator for sale

　　This batch of experimental samples also includes microorganisms in artificial extreme environments, which were collected from the spacecraft AIT (Integrated Assembly Testing) environment and assembly workshop. We selected the strains with the strongest tolerance to harsh environments from the isolated microorganisms, and made them composite structures with common spacecraft materials to simulate the existence of microorganisms in different parts of the spacecraft, "said Zhang Gaosen." Through extravehicular exposure experiments, we obtained the survival limits and tolerance of these samples in the space environment, analyzed the protective characteristics of aerospace materials on microorganisms, and laid the foundation for the technical validation and implementation of planetary protection in deep space explorationused excavator for sale used excavator for sale used excavator for sale used excavator for sale used excavator for sale used excavator for sale

　　Using the amino acid chemical reaction model to explain the role of gravity in the origin of lifeused excavator for sale used excavator for sale

　　The research on the origin of life is the key to answering some of the deepest questions in life science, which not only involves the essence of life, but also whether we are alone in the universe.used excavator for sale used excavator for sale used excavator for sale

　　Scientists use amino acid chemical reaction models in space to explore the environmental effects on the origin and evolution of space life from two typical space environments, microgravity and space radiation, in order to provide experimental and theoretical support for the exploration of extraterrestrial life.

　　The samples in the spacecraft that descended with the Shenzhou 18 spacecraft this time are the third batch of experimental samples after the Shenzhou 16 launch mission. This time, we have expanded the types of tested amino acids and further verified the microgravity response of amino acid peptide formation reactions, which helps to understand the important role and potential molecular mechanisms of gravity in the origin of life, "said Liu Yan, Associate Professor at the School of Chemistry and Chemical Engineering, Xiamen University.used excavator for sale used excavator for sale used excavator for sale

　　The samples accompanying Shenzhou 18 this time also include the "seeds" of various life forms exposed to cosmic radiation on the extravehicular radiation biology exposure platform, including various life molecules such as amino acids and nucleosides, as well as minerals such as simulated Martian soil. Next, scientists will conduct in-depth research on the samples in order to answer whether abundant cosmic rays can stimulate the "seed" condensation of life in a certain special environment, which will provide important experimental evidence for screening potential geological environments for extraterrestrial life.used excavator for sale used excavator for sale

For more used excavator for sale information, click: https://www.uexcavator.com/