Article
Physics, Multidisciplinary
Alex Lopatka
Summary: Geochemical analyses indicate that a 200 μm speck of lunar soil is likely not of lunar origin.
Article
Optics
Hayder Makkee Namaa, Tareq Abed Mohammed, Abdullah Abdu Ibrahim
Summary: The strength of solar radiation and temperature are important factors in solar energy utilization. However, solar cells face challenges in design, manufacturing, and cost, as well as natural and abnormal factors. A new electronic system connected to the solar structure can enhance the production of electrical energy in any conditions and types of shading. This method can maintain productivity and increase energy production in poor lighting conditions.
Article
Multidisciplinary Sciences
Huan Ling, Jianchang Wu, Fengyu Su, Yanqing Tian, Yan Jun Liu
Summary: The study introduces a novel all-in-one gel electrochromic device powered by perovskite solar cells, which can automatically adjust light absorption in real-time based on surrounding light intensity. With high stability and energy conversion efficiency, the device shows significant potential for applications as modern intelligent windows.
NATURE COMMUNICATIONS
(2021)
Article
Astronomy & Astrophysics
Andre Izidoro, Rajdeep Dasgupta, Sean N. Raymond, Rogerio Deienno, Bertram Bitsch, Andrea Isella
Summary: Astronomical observations have shown that pressure bumps in protoplanetary disks can lead to the formation of rings of planetesimals, which may have played a key role in shaping the Solar System. These pressure bumps can cause dust particles to accumulate and form rings of planetesimals at specific locations near certain temperature transition lines, providing a possible explanation for the orbital structure of the inner Solar System and the isotopic signatures of Earth, Mars, and meteorites.
Article
Engineering, Aerospace
Michael J. Durka, Miles W. E. Smith, Michael J. Ullman, Bailey Cassler, Richard Otis, Thomas A. Cwik, Benjamin J. Hockman, Matthew M. Barry
Summary: The subsurface oceans of icy moons in the outer solar system are potential habitats for extraterrestrial life. Designing a cryobot for a successful mission requires understanding the relationship between its heat budget and descent speed in different environments. The thickness and temperature profile uncertainties of the ice shells necessitate the use of probabilistic techniques. A new model has been developed to improve the accuracy of predicting the total heat budget of cryobot probes in extraterrestrial ice conditions, saving computational time while providing the necessary thermal requirements for the mission.
Article
Geochemistry & Geophysics
Lionel G. Vacher, Ryan C. Ogliore, Clive Jones, Nan Liu, David A. Fike
Summary: This passage discusses the influence of the Sun's astrophysical birth environment on the formation and composition of the Solar System. Analyzing oxygen and sulfur isotopes, it suggests the presence of chemical reactions from ultraviolet sources in the parent molecular cloud of the Solar System, with sulfur isotopes as a more direct probe of this astrophysical environment.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2021)
Article
Remote Sensing
Liang Chen, Min Li, Ying Zhao, Zhigang Hu, Fu Zheng, Chuang Shi
Summary: The study presents a multi-GNSS real-time clock estimation model considering ISCBs correction, which greatly reduces biases and improves data reduction rates. The proposed bias-corrected model outperforms undifferenced, epoch-differenced, and non-bias-corrected models, especially for GLONASS and BeiDou, showing significant improvements in root mean square data reductions up to 96% for GLONASS, 78% for BeiDou, and 40% for GPS and Galileo.
Article
Green & Sustainable Science & Technology
Thanasis Basdanis, Alexandros Tsimpoukis, Dimitris Valougeorgis
Summary: The study investigates the performance of a solar single-stage dual-bed adsorption chiller with different half-cycle times, revealing that the dynamically optimized adjusted half-cycle time operation mode provides higher cooling capacities compared to constant half-cycle times.
Article
Astronomy & Astrophysics
C. Bergez-Casalou, B. Bitsch, N. T. Kurtovic, P. Pinilla
Summary: New ALMA observations provide constraints on planet formation in protoplanetary disks. By using simulations and observations, it is found that giant planets perturb the radial gas velocities of the disk and create traffic jams in the dust. High-resolution observations are needed to distinguish important features in the inner part of the disk. The study also shows the potential of ALMA to constrain different stages of planet formation.
ASTRONOMY & ASTROPHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Difei Zhang, Yuanfeng Li, Meijing Li, Wenkai Zhong, Thomas Heumuller, Ning Li, Lei Ying, Christoph J. Brabec, Fei Huang
Summary: The incorporation of solid additives in organic photovoltaics can improve device performance and stability by adjusting molecular structure. By introducing a specific compound, processing methods can be simplified and batch differences can be reduced, providing guidelines for commercial applications.
ADVANCED FUNCTIONAL MATERIALS
(2022)
Article
Astronomy & Astrophysics
Marvin Morgan, Darryl Seligman, Konstantin Batygin
Summary: The large-scale structure of the solar system may have been shaped by a transient dynamical instability triggered by the interaction of giant planets with a massive primordial disk of icy debris. Numerical simulations suggest that if collisional damping is sufficient, Earth-mass trans-Neptunian planets could have emerged within 10 million years.
ASTROPHYSICAL JOURNAL LETTERS
(2021)
Article
Energy & Fuels
Xin Wang, Bin Li, Lihua Zhou, Xianglei Shi, Lijie Sun, Xunchun Wang
Summary: Highly efficient, flexible, and lightweight thin-film solar cells are important in aerospace. To improve radiation resistance in space, the back field and band gap of GaInP/GaAs/InGaAs triple-junction inverted metamorphic (IMM3J) solar cells were optimized. Under electron irradiation, compared to reference cells, the optimized cells showed reduced efficiency attenuation. The electrical properties and spectral response of the different cells before and after irradiation were analyzed, and adjustments were made to optimize the current-matching relationship between sub-cells.
Article
Chemistry, Physical
Yanchen Han, Jianping Ao, Zhaojing Zhang, Qing Gao, Jiajia Guo, Wei Liu, Fangfang Liu, Yi Zhang
Summary: The study highlights the importance of introducing a functional Cu-Ge contacting layer in the fabrication of high-quality CZTSe thin films, leading to successfully produced CZTSe films with low surface roughness.
ACS APPLIED ENERGY MATERIALS
(2021)
Article
Geography, Physical
Dalei Hao, Yelu Zeng, Zhaoying Zhang, Yongguang Zhang, Han Qiu, Khelvi Biriukova, Marco Celesti, Micol Rossini, Peng Zhu, Ghassem R. Asrar, Min Chen
Summary: The study found that diurnal SIFnadir has stronger correlations with GPP than SIFobs for field measurements, with an increase in mean coefficient of determination (R-2) of 0.05-0.07 for the far-red band and 0.11-0.20 for the red band. SIFnadir shows comparable performance to SIFtotal for both far-red and red bands. The difference in estimating GPP between SIFnadir and SIFobs is dominated by the viewing angle effects, but the correlation between light use efficiency (LUE) and f(esc) further determines the different performance of SIFnadir and SIFtotal in estimating GPP. TROPOMI-based analysis confirms that SIFnadir overall has higher correlations with AmeriFlux GPP than SIFobs for different plant functional types and shows similar performance to SIFtotal. Compared to SIFtotal, the estimation of SIFnadir independent of viewing angle effects does not require any canopy structure parameters, and thus offers promising potential for reliably estimating regional and global GPP.
ISPRS JOURNAL OF PHOTOGRAMMETRY AND REMOTE SENSING
(2022)
Article
Astronomy & Astrophysics
Fabrizio De Marchi, Gael Cascioli, Todd Ely, Luciano Iess, Eric A. Burt, Scott Hensley, Erwan Mazarico
Summary: The VERITAS mission by NASA is planned to launch towards Venus after 2027, and it was proposed to include a technology demonstration for the Deep Space Atomic Clock (DSAC-2). However, due to funding shortfalls, DSAC-2 had to be canceled. This study investigates the scientific value of atomic clocks like DSAC-2 onboard interplanetary spacecraft, specifically focusing on measuring possible discrepancies in redshift predicted by general relativity and violations of local Lorentz invariance and local position invariance principles.