Article
Microbiology
Adriana Blachowicz, Jillian Romsdahl, Abby J. Chiang, Sawyer Masonjones, Markus Kalkum, Jason E. Stajich, Tamas Torok, Clay C. C. Wang, Kasthuri Venkateswaran
Summary: This study reports the genomic, proteomic, and metabolomic alterations in Aspergillus niger strain JSC-093350089 grown in a controlled experiment aboard the International Space Station (ISS). Results show that microgravity and enhanced irradiation triggered non-synonymous point mutations in specific regions of the genome, altered protein abundance, and changed the metabolite composition.
FRONTIERS IN MICROBIOLOGY
(2022)
Article
Optics
Kwong-Kit Choi, Murzy Jhabvala, Donald Jennings, Kyle Turck, Anh La, Dong Wu, Tilak Hewagama, Thomas Holmes, Thomas Flatley, Analia Cillis, Yasmin Fitts, Douglas Morton
Summary: A systematic calibration approach is proposed in this study to establish the correlation between the digital output of an infrared camera and the scene temperature, requiring only a small number of experimental data points. This method is applicable to different backgrounds and atmospheric conditions, and can reliably be used for temperature conversion from laboratory to flight settings.
Article
Engineering, Aerospace
Maarten Schild, Ron Noomen
Summary: In recent years, the number of launches to space, especially to Sun-synchronous orbit, has been rapidly increasing due to improved accessibility. However, the accumulation of space debris from these launches poses a severe threat to future spaceflight operations. This paper evaluates the compliance of Sun-synchronous satellites with international guidelines, which specify a maximum remaining orbital lifetime of 25 years after the end of operational life. The results reveal poor compliance in the past, but a significant improvement to 95% in 2018.
ADVANCES IN SPACE RESEARCH
(2023)
Article
Microbiology
Rachita K. Kumar, Nitin Kumar Singh, Sanjaay Balakrishnan, Ceth W. Parker, Karthik Raman, Kasthuri Venkateswaran
Summary: This study predicts possible metabolic interactions in the ISS microbiome using a computational approach and sheds further light on its organization. The results show beneficial interactions between Klebsiella pneumoniae and Pantoea genus, and parasitic and amensalistic interactions between Klebsiella pneumoniae and Aspergillus and Penicillium species. Klebsiella pneumoniae has positive effects on the survival of other microorganisms, but may also have negative interactions with potential pathogens.
Article
Engineering, Aerospace
Zhongjie Meng, Hongli Liang
Summary: This paper proposes an adaptive attitude maneuver control scheme to improve the attitude precision of satellites with large-scale antennas. A novel robust input shaper is designed to suppress vibration, and an adaptive terminal sliding mode controller with radial basis function neural network is utilized for attitude tracking. The effectiveness of the proposed control scheme is validated under different space thermal environments.
ADVANCES IN SPACE RESEARCH
(2022)
Article
Construction & Building Technology
Chunwang Wang, Xiaofeng Li
Summary: This study selected four typical stations in Guangzhou, China to investigate the thermal environment characteristics of subway station tunnels. The results showed that the temperature in the tunnels increased by about 4°C from the opening to the operation stage. The variations in temperature were influenced by passenger flow and train density, rather than the operation year. The Tunnel Exhaust Fan (TEF) played an important role in ensuring the normal operation of train air conditioning, with a limited effect on reducing tunnel temperature.
JOURNAL OF BUILDING ENGINEERING
(2022)
Article
Chemistry, Physical
Zengyan Du, Ming Li, Sichao Xu, Kaibin Li, Fengxia Zou, Ruirong Zhang, Guanghai Li
Summary: Intelligent thermal control coatings utilizing dynamic emittance VO2 material to achieve high and low emissivity at different temperatures provide a new energy-efficient and cost-effective solution for spacecraft thermal management systems.
JOURNAL OF ALLOYS AND COMPOUNDS
(2022)
Article
Engineering, Aerospace
Vicent Alcayde, Ana Vercher-Martinez, F. Javier Fuenmayor
Summary: The study focuses on establishing thermal parameters to limit the temperature range of satellite components, using a backward-implicit scheme for equilibrium thermal problem. Results show that different coating materials have a significant impact on passive thermal control of spacecraft, with thermal surfaces playing a crucial role in maintaining the desired temperature range.
ADVANCES IN SPACE RESEARCH
(2021)
Article
Microbiology
Anna C. Simpson, V. V. Ramprasad Eedara, Nitin K. Singh, Namita Damle, Ceth W. Parker, Fathi Karouia, Christopher E. Mason, Kasthuri Venkateswaran
Summary: In April 2018, a strain called Cohnella hashimotonis was isolated from the wall of the Waste Hygiene Compartment on the International Space Station (ISS). This bacterium belongs to the family Paenibacillaceae and exhibits gram-positive, rod-shaped characteristics, as well as motility and the ability to metabolize various carbon compounds.
FRONTIERS IN MICROBIOLOGY
(2023)
Article
Microbiology
Swati Bijlani, Nitin K. Singh, V. V. Ramprasad Eedara, Appa Rao Podile, Christopher E. Mason, Clay C. C. Wang, Kasthuri Venkateswaran
Summary: Three novel bacterial strains, IF7SW-B2(T), IIF1SW-B5, and IIF4SW-B5, belonging to the genus Methylobacterium, were isolated from the International Space Station (ISS). These strains are proposed to be a new species named Methylobacterium ajmalii based on genomic, phylogenetic, biochemical, and fatty acid analyses.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Chemistry, Multidisciplinary
Biao Zuo, Cheng Li, Quanyin Xu, Katelyn Randazzo, Naisheng Jiang, Xinping Wang, Rodney D. Priestley
Summary: This study demonstrates that polymer brushes with ultrahigh grafting density exhibit significantly improved thermal stability, overcoming confinement and interfacial effects to control thin-film material properties. The dense packing and molecular ordering in the amorphous state of ultradense brushes prepared by surface-initiated atom transfer radical polymerization in combination with a self-assembled monolayer of initiators play a crucial role in enhancing the thermal stability of polymer films.
Article
Microbiology
Charles S. Cockell, Rosa Santomartino, Kai Finster, Annemiek C. Waajen, Natasha Nicholson, Claire-Marie Loudon, Lorna J. Eades, Ralf Moeller, Petra Rettberg, Felix M. Fuchs, Rob Van Houdt, Natalie Leys, Ilse Coninx, Jason Hatton, Luca Parmitano, Jutta Krause, Andrea Koehler, Nicol Caplin, Lobke Zuijderduijn, Alessandro Mariani, Stefano Pellari, Fabrizio Carubia, Giacomo Luciani, Michele Balsamo, Valfredo Zolesi, Jon Ochoa, Pia Sen, James A. J. Watt, Jeannine Doswald-Winkler, Magdalena Herova, Bernd Rattenbacher, Jennifer Wadsworth, R. Craig Everroad, Rene Demets
Summary: The study found that under different gravity conditions, Sphingomonas desiccabilis and Bacillus subtilis enhanced the leaching of vanadium by 184.92% to 283.22% compared to sterile controls. Gravity did not significantly affect the mean leaching rate, demonstrating the potential for biomining on Solar System objects.
FRONTIERS IN MICROBIOLOGY
(2021)
Article
Computer Science, Interdisciplinary Applications
Erik Seedhouse
Summary: Research shows that applying VR technology to support learning can lead to positive outcomes in various aspects such as spatial awareness, navigation, and presence. However, for visual and kinesthetic modes of learning, VR as an instructional tool is not superior to conventional learning.
Article
Automation & Control Systems
Xuhui Lu, Yingmin Jia, Yongling Fu, Fumitoshi Matsuno
Summary: This article studies the appointed-time attitude tracking control of the spacecraft on the special orthogonal group, considering the attitude forbidden zone, parameter uncertainties, and external disturbances. A novel projection function and reduced dimensional vector are proposed, and a set of control schemes is constructed to ensure both attitude constraint and appointed-time control performance.
IEEE TRANSACTIONS ON SYSTEMS MAN CYBERNETICS-SYSTEMS
(2023)
Article
Thermodynamics
A. Sielaff, D. Mangini, O. Kabov, M. Q. Raza, A. I. Garivalis, M. Zupancic, S. Dehaeck, S. Evgenidis, C. Jacobs, D. Van Hoof, O. Oikonomidou, X. Zabulis, P. Karamaounas, A. Bender, F. Ronshin, M. Schinnerl, J. Sebilleau, C. Colin, P. Di Marco, T. Karapantsios, I. Golobic, A. Rednikov, P. Colinet, P. Stephan, L. Tadrist
Summary: This publication lays the foundation for the description of the Multiscale Boiling Experiment conducted on the International Space Station. The experiment investigates two-phase heat transfer during boiling processes by selectively igniting bubbles on a heated substrate using a short laser pulse. The study is significant for understanding the phenomena and has generated over 3000 datasets over an 11-month measurement period.
APPLIED THERMAL ENGINEERING
(2022)