央视网消息：12月18日，海南自由贸易港正式启动全岛封关。海南全岛成为一个海关监管特殊区域，实施以"'一线'放开、'二线'管住、岛内自 由"为基本特征的自由化便利化政策制度。这是我国坚定不移扩大高水平对外开放、推动建设开放型世界经济的标志性举措。 这里是海南自贸港"一线"放开的的主通道——洋浦港，这艘搭载着17.9万吨石化原辅料的货船缓缓靠港，这也是海南自贸港封关运作后的第一 批"零关税"进口产品，海关快速验行，节省通关时间近4小时。 海口海关所属洋浦海关综合业务处科长艾韬介绍，为保障全岛封关后第一批货物快速通关，他们实施高频调度，提前摸排进口计划，研究"一 货一策"服务机制，确保全岛封关平稳有序。 封关后，海南自贸港"零关税"商品清单扩容至约6600个税目，享惠主体范围大幅拓宽。 这里是三亚凤凰机场国际货站，封关后首批通过空运进口的"零关税"商品在这里完成清关出库。像这套价值100万元的科研设备，封关前需要 缴纳5%的进口关税和13%的进口增值税，而封关后该类设备被纳入"零关税"政策范围，为企业节约了18万多元的成本。 三亚崖州湾科技城管理局副局长周国伟介绍，未来一个月，他们还有好几套设备要进口。封关后"零 ...

Core Viewpoint - Hongxun Technology (603015.SH) is actively involved in the nuclear fusion sector, providing high-performance power systems for Tokamak devices, and has secured significant contracts related to international fusion projects [1] Group 1: Company Activities - The subsidiary EEI has long-term collaborations with foreign research institutions on physics projects, particularly in the nuclear fusion field [1] - EEI has previously participated in the ITER project, supplying power systems for the JT-60SA superconducting Tokamak device [1] - Currently, EEI has two active orders: one for a high-precision power solution for the correction coils of a divertor Tokamak testing device (order value of €3.6 million) and another for a magnet power project (order value of €800,000), both scheduled for delivery by the end of 2025 [1] Group 2: Industry Engagement - The EEI team is actively participating in discussions on nuclear fusion in key regions worldwide, seeking collaboration opportunities with China and other countries on various nuclear fusion projects [1]

Core Insights - The CHIEF (Centrifuge for High-Gravity Experiments) is the first national large scientific facility in Zhejiang, China, and has been recognized as the world's most powerful centrifuge by "Physics World" magazine [1][3] - CHIEF1300 has achieved a significant increase in maximum acceleration from 150g to 300g, with a capacity of 1300g·t, setting a new global record [2] - The facility aims to simulate extreme processes that cannot be directly observed in reality, providing insights into geological evolution, landslides, deep-sea energy extraction, and new material solidification [1][3] Technical Advancements - The design of CHIEF1300 includes innovative structural systems and the world's largest vacuum temperature control system to manage heat dissipation during high-speed operation [2] - The machine features a dynamic balance adjustment system that ensures stability during high-speed rotation, enabling more complex dynamic experiments in the future [2] Research Applications - CHIEF is equipped with 18 self-developed experimental devices, six of which are internationally pioneering, supporting various scientific explorations [3] - The experimental devices can simulate natural disasters, such as tsunamis, and provide critical data for energy development and material innovation [3] - The establishment of the "National Supergravity Science Center (provisional)" and the Supergravity Science and Technology Research Institute at Zhejiang University aims to promote interdisciplinary research and address national strategic needs [3]

Core Insights - The CHIEF facility, a major national scientific infrastructure, has launched its first centrifuge in Hangzhou, Zhejiang Province, which can simulate artificial gravity fields hundreds to thousands of times that of Earth's gravity [1][2] - This facility aims to support research in disaster prevention, resource development, underground space utilization, new material development, and geological processes [1] Group 1 - The CHIEF facility includes three main centrifuges: CHIEF1300, CHIEF1500, and CHIEF1900, along with 18 onboard devices across six experimental chambers [1][2] - CHIEF1300 has a capacity of 1300 g·t and is currently the largest centrifuge globally, achieving a maximum centrifugal acceleration of 300 g [2] - The facility is designed to simulate geological and environmental processes over extensive time scales, allowing for the study of phenomena that would typically take decades or centuries [2] Group 2 - The CHIEF project is led by Zhejiang University and aims to create an open and collaborative international research platform [2] - The facility is expected to enhance global scientific research and innovation by facilitating cooperation with top research teams worldwide [2] - The construction of CHIEF1500 and CHIEF1900 is ongoing, with completion expected by the end of 2025 [2]

Core Insights - The world's largest supergravity experimental facility has been launched in Hangzhou, China, featuring a centrifuge capable of generating gravitational forces up to 1500 times that of Earth's gravity [1][2]. Group 1: Facility Overview - The supergravity centrifuge simulation and experimental facility is led by Zhejiang University and includes three main centrifuges and 18 onboard devices across six experimental chambers [1]. - The first centrifuge, "CHIEF1300," has a capacity of 1300 g·t, making it the largest centrifuge globally, with two additional centrifuges, "CHIEF1500" and "CHIEF1900," under construction [1]. Group 2: Purpose and Applications - The facility aims to recreate significant disasters, geological evolution, and extreme environments in a controlled setting, allowing researchers to conduct experiments that compress time and space [2]. - For instance, a 100-meter real object can be scaled down to 1 meter, and a 100-year pollution migration process can be simulated in just 3.65 days [2]. Group 3: Technical Implementation - The "CHIEF1300" operates in a circular underground chamber of approximately 230 square meters, utilizing a 6.4-meter radius arm to generate centrifugal force, achieving supergravity levels between 10 to 300 times that of normal gravity [3]. - Advanced technologies such as deep pits, low-pressure chambers, and liquid cooling walls have been implemented to ensure stable and high-quality operation of the facility [3]. Group 4: Research and Development Impact - The facility integrates supergravity fields with extreme environments, covering various fields such as deep-sea resource development, disaster prevention, waste disposal, and new material fabrication [4]. - Preliminary experiments have yielded significant findings, including safety assessments for methane hydrate extraction at 2000 meters depth and earthquake impact simulations for hydropower dam designs [4]. - The facility aims to establish an open and collaborative international research platform, fostering partnerships with leading global research teams [4].

Core Insights - A research team from the University of California, Davis has developed a small imaging system called "DeepInMiniscope" that allows for high-resolution, non-invasive real-time observation of brain activity in mice [1][2] - The system is expected to open new pathways for neuroscience research and facilitate the development of new therapies for brain diseases [1] Group 1: Technology and Innovation - The DeepInMiniscope utilizes a novel mask design that integrates over 100 micro high-resolution lenses, employing neural networks to combine images from these lenses to reconstruct high-quality 3D images [1] - The neural network incorporates various machine learning methods to quickly and accurately restore fine structures in a larger 3D space [2] Group 2: Size and Usability - The new microscope measures only 3 square centimeters, approximately the size of a grape, and weighs about 10 grams, making it significantly smaller than previous devices [2] - Its ergonomic design allows for comfortable and safe use by mice during free movement, enhancing usability in behavioral studies [2] Group 3: Future Goals - The ultimate goal of the research is to develop a wireless device that is only 2 square centimeters in size, aimed at deepening the understanding of brain information processing and behavior mechanisms, as well as advancing the recognition and treatment strategies for brain diseases [2]

Core Insights - The National Institute of Standards and Technology (NIST) has developed a quantum device capable of simultaneously measuring current, resistance, and voltage within a single system, potentially simplifying quantum electrical standards operations and reducing research costs [1][2]. Group 1: Device Functionality - The new "one-box" measurement method allows for the integration of two quantum standards that traditionally required separate devices, which is a significant challenge due to the reliance on fragile quantum phenomena observable only at very low temperatures [1]. - The device utilizes a novel material that enables quantum properties to be achieved without the need for a magnetic field, allowing both quantum systems to operate simultaneously within the same low-temperature refrigerator [1]. Group 2: Measurement Accuracy - The team successfully obtained measurements for amperes, ohms, and volts with an error margin of only one millionth, showcasing the precision of the new device [1]. Group 3: Cost and Accessibility - This device is expected to lower the costs associated with using quantum electrical standards and make it more convenient for researchers worldwide to utilize [2].

Group 1 - The core viewpoint of the article highlights the successful bid by Thermo Scientific for the procurement project of X-ray photoelectron spectrometer and other scientific equipment for Zhengzhou University, with a total bid amount of 11.03 million [1] Group 2 - Project basic information includes the procurement project number: Yu Cai Bidding Procurement-2025-698, and the project name: Zhengzhou University Asset and Finance Department X-ray Photoelectron Spectrometer and other scientific equipment procurement project [1] - The procurement method is public bidding, with the announcement date on July 14, 2025, and the evaluation date set for August 4, 2025 [1] Group 3 - The procurement content consists of two packages: Package One includes one set of X-ray photoelectron spectrometer, and Package Two includes one set of continuous wave electron paramagnetic resonance spectrometer, along with associated services such as installation, debugging, acceptance, training, and warranty services [1] - The delivery period is 300 calendar days from the effective date of the contract, with the delivery location specified by the purchaser [1] - Quality standards require compliance with national and industry regulations, with warranty periods of 5 years for Package One and 3 years for Package Two [1] Group 4 - The project does not accept joint bids and does accept imported products, but it is not specifically aimed at small and medium-sized enterprises [1]