Article
Astronomy & Astrophysics
L. Lamy, L. Colomban, P. Zarka, R. Prange, M. S. Marques, C. K. Louis, W. S. Kurth, B. Cecconi, J. N. Girard, J-M Griessmeier, S. Yerin
Summary: In this study, the beaming of 11 Io-Jupiter decametric emissions was investigated using up-to-date magnetic field models and three methods to locate the active Io Flux Tube (IFT). The position and emission angle of the radiosources were accurately determined, and the kinetic energy of source electrons was inferred. Simultaneous radio/UV observations provided evidence of multiple Io-DAM arcs associated with UV spots, including a trans-hemispheric beam UV spot. The results from multi-point radio observations revealed variations in the emission angle and kinetic energy as a function of altitude and time.
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
(2022)
Review
Biotechnology & Applied Microbiology
Huazhen Lu, Qingzhuo Wang, Wenzheng Liu, Zhiqiang Wen, Yanan Li
Summary: Research on the roles of bacteria in tumor development and progression is rapidly advancing, with evidence showing their influence on tumor immune microenvironment and potential for personalized therapy. Precise modulation strategies and engineered bacteria with tumor-targeting ability are key for tumor suppression and precise delivery of payloads, suggesting promising approaches for antitumor treatment.
APPLIED MICROBIOLOGY AND BIOTECHNOLOGY
(2021)
Article
Environmental Sciences
Theo Dezert, Ganesh Hiriyanna Rao Ravindra, Fjola Guorun Sigtryggsdottir
Summary: Rockfill dams are important hydraulic structures and ripraps are widely used for dam protection. This study investigates the behavior of ripraps during overtopping and reveals a strong relation between riprap stone displacements, axial reaction load values, and overtopping discharges. The results demonstrate the resistance of supported riprap at the toe and the significant contribution of the compaction effect to the axial load during overtopping.
Article
Engineering, Geological
Maral Bayaraa, Brian Sheil, Cristian Rossi
Summary: This paper compares different monitoring methods and mathematical simulation results to study the ground deformation of a tailings dam collapse. The study found that synthetic aperture radar interferometry (InSAR) can better capture the deformation of the tailings dam compared to traditional monitoring methods. The finite-element (FE) simulation results were in broad agreement with the actual measurements in terms of magnitude and trends preceding failure, but deviated significantly immediately before failure.
Article
Astronomy & Astrophysics
Stephan Schlegel, Joachim Saur
Summary: This study uses observations from the Hubble Space Telescope to study the density, scale height, and lateral position of the Io Plasma Torus. The results show that using a warped multipole centrifugal equator model improves the fit to the observations, and the quadropole moments can change the plasma density around Io.
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
(2023)
Article
Materials Science, Multidisciplinary
Tong Yang, Yi Kong, Jiangbo Lu, Zhenjun Zhang, Mingjun Yang, Ning Yan, Kai Li, Yong Du
Summary: The coexistence of C14, C36 and C15 structures in MgZn2 precipitates is observed, confirming the predicted Laves phase transformation sequence. The study shows that precipitates grow towards an equiaxed or even round morphology, rather than the conventional plate morphology.
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
(2021)
Article
Astronomy & Astrophysics
C. K. Louis, P. Louarn, B. Collet, N. Clement, S. Al Saati, J. R. Szalay, V. Hue, L. Lamy, S. Kotsiaros, W. S. Kurth, C. M. Jackman, Y. Wang, M. Blanc, F. Allegrini, J. E. P. Connerney, D. Gershman
Summary: This study focuses on the detection and characterization of radio sources associated with the Galilean moons Io, Europa, and Ganymede at Jupiter. Using data from the Juno spacecraft, this research suggests that the Cyclotron Maser Instability is responsible for the radio signals. The study also highlights the importance of Alfven perturbations and currents in amplifying the radio emissions.
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
(2023)
Article
Optics
Omar Alkhazragi, Ming Dong, Liang Chen, Dong Liang, Tien Khee Ng, Junping Zhang, Hakan Bagci, Boon S. Ooi
Summary: Vertical-cavity surface-emitting lasers (VCSELs) are widely used in various applications due to their scalability and versatility. However, coherent VCSELs suffer from coherence artifacts that reduce image quality. In this work, a chaotic-cavity D-shaped mesa is proposed to reduce coherence and increase optical power. The design is simple and promising for applications requiring lower speckle density and lower temporal coherence.
Article
Remote Sensing
Lei Xie, Wenbin Xu, Xiaoli Ding, Roland Burgmann, Sanjay Giri, Xiaoge Liu
Summary: Monitoring dam deformation and reservoir conditions is crucial for dam safety assessment. However, it can be costly and challenging to maintain a real-time monitoring system. In this study, a framework that combines remote sensing data and numerical modeling is proposed for dam-related hazard investigation. The framework is applied to a case study of the 2020 Sardoba dam failure in Uzbekistan, providing insights into the causes and mechanisms of the failure.
INTERNATIONAL JOURNAL OF APPLIED EARTH OBSERVATION AND GEOINFORMATION
(2022)
Article
Environmental Sciences
Jiawei Wang, Wei Wu, Xiaode Zhou, Yaqi Huang, Mengjing Guo
Summary: This study investigated the N2O concentration and emission flux from the high-dam Xiaowan Reservoir in the Lancang River region, revealing that various factors such as water temperature, DO concentration, and nutrients influence N2O emissions. The study advances our understanding of N2O emissions from high-dam reservoirs in longitudinal range-gorge regions.
JOURNAL OF ENVIRONMENTAL MANAGEMENT
(2021)
Article
Instruments & Instrumentation
Weilong Wang, Longfei Li, Kun Yu, Kaihua Zhang, Wenyue Ruan, Qianjin Zhu, Yufang Liu
Summary: The increase in spectral emissivity measurement error at large emission zenith angles is mainly due to surface temperature deviation. To improve the accuracy of measurements, a correction method using equivalent temperature for non-isothermal measurement areas was proposed. An experimental apparatus was used to accurately measure spectral emissivity in the angular range of 0 degrees -80 degrees. The reliability of the results was verified using a high-purity silicon carbide sample, with excellent agreement between the corrected equivalent temperature and the set temperature.
INFRARED PHYSICS & TECHNOLOGY
(2023)
Article
Neurosciences
Jing Liu, Fantao Meng, Wentao Wang, Min Wu, Yu Zhang, Minghu Cui, Changyun Qiu, Fengai Hu, Di Zhao, Dan Wang, Cuilan Liu, Dunjiang Liu, Zhicheng Xu, Yameng Wang, Wei Li, Chen Li
Summary: This study investigated the role of protein phosphatase Mg2+/Mn2+-dependent 1F (PPM1F) in depression, particularly its function in the medial prefrontal cortex (mPFC). The study found that the expression of PPM1F was decreased in the mPFC of depressed mice, and knockdown of PPM1F resulted in depression-related behaviors, while overexpression of PPM1F had antidepressant effects. PPM1F knockdown also led to hyperexcitability of neurons, phosphorylation of AMPK, and activation of microglia and proinflammatory cytokines. The study revealed that PPM1F modulates depression-related behaviors in the mPFC by regulating the function of p300 via the AMPK signaling pathway.
CNS NEUROSCIENCE & THERAPEUTICS
(2023)
Article
Astronomy & Astrophysics
A. Moirano, A. Mura, B. Bonfond, J. E. P. Connerney, V. Dols, D. Grodent, V. Hue, J. C. Gerard, F. Tosi, A. Migliorini, A. Adriani, F. Altieri, C. Castagnoli, A. Cicchetti, B. M. Dinelli, D. Grassi, M. L. Moriconi, R. Noschese, G. Piccioni, C. Plainaki, P. Scarica, G. Sindoni, R. Sordini, D. Turrini, F. Zambon
Summary: One of the features of Jupiter's aurora is the emission caused by the orbital motion of its moon Io. The interaction between Io and the surrounding plasma generates Alfven waves that travel along the magnetic field lines towards Jupiter's ionosphere, causing the production of the Io footprint auroral emission. By studying the position of the Io footprint using JIRAM onboard Juno, researchers can retrieve information on the variability of the Io Plasma Torus and gain insights into the density and temperature variations. The results provide evidence of non-System III variability in the plasma density and temperature, suggesting either local time asymmetry or temporal variability of the torus.
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
(2023)
Article
Soil Science
Salavat Mudarisov, Ildar Farkhutdinov, Rim Khamaletdinov, Eduard Khasanov, Airat Mukhametdinov
Summary: Modeling the tillage process using the method of discrete elements shows promise in accurately describing soil behavior, although calibration of the contact model parameters can be time-consuming. The results of calibration help in understanding the significance of these parameters and can lead to nomograms for selecting appropriate parameters based on soil conditions.
SOIL & TILLAGE RESEARCH
(2022)
Article
Physics, Applied
Coralie Perrier, Aboulaye Traore, Toshimitsu Ito, Hitoshi Umezawa, Etienne Gheeraert, Philippe Ferrandis
Summary: We investigated beta-Ga2O3 Schottky barrier diodes grown on substrates using various characterization techniques and electrical measurements. Four electron trap levels were identified, with one near the surface and the others showing similarities to the literature. The surface trap was found to be linked to substrate polishing damage, while an energy band at the metal-semiconductor interface was also detected. These interface states and surface deep traps contributed to the degradation of diode performance.
APPLIED PHYSICS LETTERS
(2023)
Article
Multidisciplinary Sciences
L. C. Ray, C. T. S. Lorch, J. O'Donoghue, J. N. Yates, S. Badman, C. G. A. Smith, T. S. Stallard
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2019)
Article
Astronomy & Astrophysics
J. N. Yates, L. C. Ray, N. Achilleos, O. Witasse, N. Altobelli
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
(2020)
Article
Geosciences, Multidisciplinary
A. Bader, S. W. H. Cowley, S. V. Badman, L. C. Ray, J. Kinrade, B. Palmaerts, W. R. Pryor
GEOPHYSICAL RESEARCH LETTERS
(2020)
Article
Astronomy & Astrophysics
C. T. S. Lorch, L. C. Ray, C. S. Arridge, K. K. Khurana, C. J. Martin, A. Bader
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
(2020)
Article
Astronomy & Astrophysics
A. Bader, S. V. Badman, L. C. Ray, C. P. Paranicas, C. T. S. Lorch, G. Clark, M. Andre, D. G. Mitchell, D. A. Constable, J. Kinrade, G. J. Hunt, W. Pryor
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
(2020)
Article
Astronomy & Astrophysics
W. R. Dunn, G. Branduardi-Raymont, V. Carter-Cortez, A. Campbell, R. Elsner, J. -U. Ness, G. R. Gladstone, P. Ford, Z. Yao, P. Rodriguez, G. Clark, C. Paranicas, A. Foster, D. Baker, R. Gray, S. V. Badman, L. C. Ray, E. J. Bunce, B. Snios, C. M. Jackman, I. J. Rae, R. Kraft, A. Rymer, S. Lathia, N. Achilleos
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
(2020)
Article
Astronomy & Astrophysics
C. J. Martin, L. C. Ray, D. A. Constable, D. J. Southwood, C. T. S. Lorch, M. Felici
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
(2020)
Article
Astronomy & Astrophysics
C. J. Martin, L. C. Ray, M. Felici, D. A. Constable, C. T. S. Lorch, J. Kinrade, R. L. Gray
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
(2020)
Article
Astronomy & Astrophysics
M. K. G. Holmberg, F. Cipriani, T. Nilsson, S. Hess, H. L. F. Huybrighs, L. Z. Hadid, G. Deprez, R. J. Wilson, M. W. Morooka, M. Felici
Summary: In this study, simulations using SPIS were used to analyze the characteristics of the Cassini ion wake and its impact on LP measurements. The results showed a strong agreement between simulated ion densities and LP data, suggesting SPIS as a useful tool for LP data analysis when spacecraft properties and environmental parameters are known. Additionally, the simulations provided constraints on ion temperature estimates in Saturn's inner magnetosphere.
JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS
(2021)
Article
Physics, Applied
L. Monnin, S. L. G. Hess, J-F Roussel, P. Sarrailh, D. Payan
Summary: A plasma expansion model was developed to study flash-over propagation on spacecraft solar panels, considering plasma extinction effects. A minimum on the sheath potential was found, explaining the end of plasma emission by the cathode and the end of plasma expansion. Numerical results showed good agreement with experimental measurements, and the model has potential applications in preventing arcing on spacecrafts solar panels.
JOURNAL OF APPLIED PHYSICS
(2021)
Article
Astronomy & Astrophysics
Kaya Mori, Charles Hailey, Gabriel Bridges, Shifra Mandel, Amani Garvin, Brian Grefenstette, William Dunn, Benjamin J. Hord, Graziella Branduardi-Raymont, John Clarke, Caitriona Jackman, Melania Nynka, Licia Ray
Summary: This study reports the observation of hard X-rays in the 8-20 keV range from the Jovian aurorae using the NuSTAR X-ray observatory. Simulations explain the non-detection of hard X-rays by the Ulysses spacecraft and highlight the similarities between the processes generating hard X-ray aurorae on Earth and Jupiter.
Article
Astronomy & Astrophysics
Iannis Dandouras, Matt G. G. T. Taylor, Johan De Keyser, Yoshifumi Futaana, Ruth A. Bamford, Graziella Branduardi-Raymont, Jean-Yves Chaufray, Dragos Constantinescu, Elisabetta De Angelis, Pierre Devoto, Jonathan Eastwood, Marius Echim, Philippe Garnier, Benjamin Grison, David Hercik, Helmut Lammer, Andre Laurens, Francois Leblanc, Anna Milillo, Rumi Nakamura, Lubomir Prech, Elias Roussos, Stepan Stverak, Julien Forest, Arnaud Trouche, Sebastien L. G. Hess, Jean-Charles Mateo-Velez, James Carpenter, Josef Winter
Summary: The Lunar Orbital Platform - Gateway (LOP-Gateway), assembled and operated by NASA and international partner organizations, offers new opportunities for scientific research in the vicinity of the Moon. It provides a unique location to study the deep space plasma environment and its interaction with the lunar surface and exosphere. This paper explores the potential of externally mounted payloads on the Gateway for space plasma physics research and the impact of the space environment on an inhabited platform.
FRONTIERS IN ASTRONOMY AND SPACE SCIENCES
(2023)
Article
Physics, Fluids & Plasmas
Sebastien L. G. Hess, Denis Payan, Pierre Sarrailh
Summary: Spacecraft can be charged when they come into contact with charged particles in space. The charging is influenced by the surface materials and their exposure to space, resulting in different charging levels for different parts of the spacecraft. The charging on solar panels is especially important due to the polarized elements and small distances between them, leading to strong electric fields and electrostatic discharges (ESDs). This article focuses on controlling the onset of ESDs by studying the impact of cover glass secondary emission properties on the voltage threshold of solar cell ESDs. Numerical simulations using the spacecraft plasma interaction software (SPIS)-ESD software are conducted, as practical experimental studies are not feasible due to the natural variability of physical samples and the lack of materials with controlled characteristics.
IEEE TRANSACTIONS ON PLASMA SCIENCE
(2023)
Article
Physics, Fluids & Plasmas
Sebastien L. G. Hess, Ludivine Leclercq
Summary: The article discusses the importance and challenges of modeling spacecraft surface interactions with space environments. It introduces the ChaMISEn data management system developed by ONERA, which provides a convenient way to describe and use the characteristics of space materials. The system includes an open-source data model, extraction software, distributed databases, and libraries. The article also presents use cases related to spacecraft charging modeling to illustrate the capabilities of the system.
IEEE TRANSACTIONS ON PLASMA SCIENCE
(2023)
Article
Multidisciplinary Sciences
Emilie Mauduit, Philippe Zarka, Laurent Lamy, Sebastien L. G. Hess
Summary: Radio detection at high time-frequency resolutions is an effective method to study electron acceleration processes, and radio bursts from Jupiter have characteristics that make them easier to detect than slowly variable emissions. In addition to Io-Jupiter S-bursts, drifting radio bursts related to Ganymede-Jupiter interaction and Jovian aurora were found, showing ubiquitous Alfvenic electron acceleration in Jupiter's high-latitude regions.
NATURE COMMUNICATIONS
(2023)