With the advancement of Internet applications, the global demand for broadband satellite communication services is incessantly escalating. Furthermore, there exists an exponential surge in the requisition for the capacity of satellite communication systems. In response to this evolving demand, the domain of satellite communication technology is progressively evolving toward the realm of high-throughput satellite (HTS) communication systems. The typical technical characteristics of HTS are: (a) the satellite adopts multibeam technology for beam overlapping coverage of the service area, which improves the quality of the wireless link while realizing the spatial dimension segmentation; (b) based on this, the system adopts multiple frequency multiplexing to improve the communication capacity of a single satellite; (c) gateway stations are tightly coupled with user beam clusters to complete two-hop communication, which makes multiple gateway stations share the communication resources of the same satellite, forming a spatial isolation of the gateway stations, and once again realizing the frequency multiplexing of the gateway station links. A key requirement for future multibeam broadband satellite communication systems is the ability to flexibly adjust beam capacity according to changes in business distribution, in order to meet time-varying business requirements. Beam hopping technology provides an efficient solution to achieve the efficient use of frequency resources and power resources. At the same time, the use of beam hopping makes the beam hopping of satellite payload need to match the business signals of ground signal stations, bringing about the need for synchronization of beam hopping between satellite and ground.

The advent of the fifth-generation (5G) technology has revolutionized the way we think about communication networks, enabling a plethora of new use cases and scenarios that were not possible with previous generations of wireless technology. The existing 5G communication networks predominantly rely on terrestrial communication infrastructure, which, however, exhibits several notable limitations such as capacity constraints, latency issues, and energy inefficiencies, necessitating this next-generation leap. The 6G aims to provide a comprehensive solution for a hyperconnected, intelligent, and immersive digital ecosystem, seamlessly integrating terrestrial, airborne, and spaceborne networks which is referred to as the space-air-ground-sea integrated network (SAGSIN). A traditional SAGSIN scenario mainly includes 3 segments: spaceborne network, airborne network, and terrestrial network. The classical SAGSIN architecture has shown remarkable capabilities in providing massive connectivity by integrating spaceborne, airborne, and terrestrial cellular networks, which, however, encounters inherent technical challenges against their respective practical implementation. On the other hand, the philosophy of near-space communications (NS-COM) is gradually emerging. The distinctive location of near space which is 20 ~ 100 km above Earth’s surface positiones at the core of the SAGSIN, thus allowing the NS-COM network to address the shortcomings of traditional spaceborne, terrestrial, and airborne networks. NS-COM present a promising addition to SAGSIN, making them the final piece of the SAGSIN puzzle.

This study presents a comprehensive exploration of fermented oats (FO) as a next-generation skincare ingredient with dual anti-inflammatory and skin barrier-restoring functions. By utilizing Saccharomyces cerevisiae fermentation, the authors successfully enhanced the bioactive composition of oats, significantly increasing β-glucan, proteins, flavonoids, amino acids, and their derivatives. These biochemical improvements translate into potent biological activity, positioning FO as a multifunctional soothing and repairing ingredient for sensitive and photodamaged skin. A major highlight of this research is its multi-model validation across cellular assays, zebrafish embryos, and 3D reconstructed skin. FO demonstrated a marked ability to modulate inflammatory pathways, including a 79.87% inhibition of TNF-α/TNFR1 binding, suppression of LPS-induced nitric oxide release, and reduction of neutrophil recruitment. These results collectively establish FO as a robust anti-inflammatory agent capable of suppressing both cytokine- and TRPV1-mediated inflammatory responses. Equally noteworthy is FO’s impact on skin barrier repair. In UVB-irradiated 3D skin models, FO significantly upregulated key structural proteins—including loricrin, filaggrin, transglutaminase 1, and caspase-14—which are essential for epidermal reinforcement, differentiation, and natural moisturizing factor formation. The ingredient also enhanced hydration by increasing both skin moisture content and AQP3 expression.

Overall, this study highlights fermented oats as an innovative, solvent-free, bioactivated skincare ingredient that simultaneously alleviates inflammation, repairs barrier damage, and improves hydration. Its strong mechanistic support and multi-level experimental confirmation underscore its potential as an effective soothing and repairing ingredient for sensitive skin formulations.

Dr. Jongkil Park and his team of the Semiconductor Technology Research Center at the Korea Institute of Science and Technology (KIST) have presented a new approach that mimics the brain's learning principles. The team engineered the principle of spike-timing-dependent plasticity (STDP), in which the brain adjusts the strength of connections based on the order of signal firing between neurons. This allows them to learn the connectivity in a brain's neural network in real-time without having to store the activity of all the neurons.

Professor Tonggang Jiu's team at Shandong University achieved a significant improvement in the efficiency and stability of perovskite solar cells by regulating the NiO_x/perovskite interface chemistry by introducing a novel self-assembling molecule, (4-(2,7-dibromo-9,9-dimethylacridin-10(9H)-yl)butylphosphonic acid (2Br-4PADMAc), into the NiO_x/perovskite interface. This effectively suppressed Ni^>3+ generation and interfacial redox reactions, optimized energy level matching, and promoted high-quality film crystallization. Compared to the traditional molecule 2PACz, 2Br-4PADMAc exhibits stronger interfacial anchoring and a larger molecular dipole moment, which can improve hole transport efficiency and reduce PbI₂ accumulation. The inverse perovskite solar cell modified with this molecule achieved a photoelectric conversion efficiency of 25.28% and excellent stability. This research provides a new strategy for optimizing the efficiency and stability of NiO_x-based perovskite solar cells through interfacial molecule design. The article was published as an open access research article in CCS Chemistry, the flagship journal of the Chinese Chemical Society.

A research team from Harbin Institute of Technology has developed a new solar driven photocatalyst that uses industrial sulfite waste to rapidly break down toxic dyes in wastewater. The study demonstrates a sustainable approach that improves water quality while transforming an abundant industrial by product into a valuable resource.

In a groundbreaking exploration of the environmental impacts of fires, researchers are shedding light on how gaseous smoke pollutants affect both air and soil quality. This critical study, titled "Impact of Gaseous Smoke Pollutants from Modelled Fires on Air and Soil Quality," is spearheaded by Mikhail Nizhelskiy from the Academy of Biology and Biotechnology Named After D.I. Ivanovskiy at Southern Federal University in Rostov-on-Don, Russian Federation. His work offers a deeper understanding of the often-overlooked consequences of fires on our environment.