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近邻宜居行星巡天计划(Closeby Habitable Exoplanet Survey, CHES)采用空间微角秒级别的高精度天体测量技术, 普查太阳系近邻(10 pc内)约100颗FGK等类型恒星, 探测宜居带类地行星或超级地球; 详细普查宜居行星的数目、真实质量和三维轨道等信息, 这将是国际上首次近邻宜居带类地行星的空间探测任务. CHES的有效载荷是一台口径为1.2 m, 视场为0.44°×0.44°, 焦距为36 m的高像质、低畸变、高稳定光学望远镜, 采用同轴三反TMA光学成像系统. 为实现宜居带类地行星探测, CHES任务中的测量精度为1 μas, 是目前国际测量精度最高的空间探测项目. 在空间科学先导专项背景型号项目的支持下, CHES团队深入凝练和论证科学目标, 成功突破了三项关键技术难题: 实现了畸变大视场高像质空间望远镜光学系统技术的重要突破; 突破了10–5 pixel级别星间距测量技术; 实现了卫星系统高稳定度姿态控制精度及热控精度的创新. CHES预计发现50颗类地行星, 引领中国空间科学探测技术的跨越式发展.

Copyright of China Petroleum Machinery is the property of China Petroleum Machinery Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Lipid metabolism, as the basis of life maintenance, is a prerequisite for cell survival, and lipid homeostasis can rapidly respond to metabolic changes in a coordinated manner. In cancers, there is an increase in lipid metabolism in cancer cells to meet the requirements for plasma membrane synthesis and energy production. Abnormal lipid metabolism plays an important role in the progression of primary liver cancer. This article reviews the association between abnormal lipid metabolism and primary liver cancer, in order to find targets for the prevention and treatment of primary liver cancer. [ABSTRACT FROM AUTHOR]

Copyright of Laboratory Animal & Comparative Medicine is the property of Laboratory Animal & Comparative Medicine Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Remote Sensing is the property of Editorial Office of Journal of Remote Sensing & Science Publishing Co. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

BACKGROUND: Growth differentiation factor 5, a member of the transforming growth factor-β superfamily and bone morphogenetic protein family, plays an important role in articular cartilage injury repair, bone regeneration, improvement of intervertebral disc degeneration, tendon healing, and neurodevelopment. OBJECTIVE: To review the research progress of growth differentiation factor 5 in inducing chondrocytes, nucleus pulposus-like cells, tendon cell differentiation, as well as inducing bone formation and neurodevelopment. METHODS: The search terms “growth differentiation factor 5, articular cartilage, bone, nucleus pulposus cells, tendon, nerve regeneration” were used in CNKI, WanFang and PubMed. According to the inclusion and exclusion criteria, the articles not related to the subject matter were excluded and 69 articles related to growth differentiation factor 5 were included. RESULTS AND CONCLUSION: (1) Growth differentiation factor 5 can induce chondrogenic and osteoblastic differentiation of mesenchymal stem cells, but the concentration boundary of growth differentiation factor 5 to induce chondrogenic or osteoblastic differentiation remains unclear. (2) Growth differentiation factor 5 can induce mesenchymal stem cells to differentiate into nucleus pulposus cells, which may play a role in the treatment of intervertebral disc degeneration. (3) Growth differentiation factor 5 can induce mesenchymal stem cells to differentiate into tendon cells and play an important role in tendon repair and prevention of postoperative tendon adhesion. (4) Growth differentiation factor 5 can induce neurodevelopment and promote nerve regeneration. [ABSTRACT FROM AUTHOR]

Copyright of Tunnel Construction / Suidao Jianshe (Zhong-Yingwen Ban) is the property of Tunnel Construction Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Prevention & Treatment For Stomatological Diseases is the property of Journal of Prevention & Treatment For Stomatological Diseases Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Tunnel Construction / Suidao Jianshe (Zhong-Yingwen Ban) is the property of Tunnel Construction Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Shipin Kexue/ Food Science is the property of Food Science Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Coal Geology & Exploration is the property of Xian Research Institute of China Coal Research Institute and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Engineering Mechanics / Gongcheng Lixue is the property of Engineering Mechanics Editorial Department and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Copyright of Journal of Clinical Hepatology / Linchuang Gandanbing Zazhi is the property of Journal of Clinical Hepatology and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Copyright of Advances in Earth Science (1001-8166) is the property of Advances in Earth Science Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Objective To investigate pneumoconiosis patients' awareness of the disease and their acceptance of Traditional Chinese Medicine (TCM) treatment for pneumoconiosis, providing a basis for health education on pneumoconiosis and exploring the feasibility of TCM treatment for the disease. Methods A total of 40 patients with stage I, stage Ⅱ, and stage Ⅲ pneumoconiosis treated by Huaibei Occupational Disease Prevention and Control Hospital were selected as the investigation subjects by random sampling method. A self-designed questionnaire survey was done via telephone to collect general information about the subjects, their understanding of pneumoconiosis, and their acceptance of TCM treatment, followed by a multifactorial regression analysis of the influencing factors. Results All 120 pneumoconiosis patients were male, and all were involved in coal mining dust exposure. It showed that the older the patient, the lower the educational level, and the longer the exposure, the higher the stage of pneumoconiosis (P < 0.05). The awareness rate of the causes and influencing factors of pneumoconiosis was 100%, and the awareness of symptoms was 80.8% (97 patients). The implementation rate of protective measures in engineering operations was 81.7% (98 people), and the implementation rate of personal protective measures and knowledge improvement was 78.3% (94 people). The overall acceptance rate of pneumoconiosis patients for TCM treatment was 23.4%, while the overall approval rate of TCM treatment was 54.2% Multivariate linear regression analysis showed that compared to patients with primary school education, those with high school education had an increased total score for awareness of pneumoconiosis of 0.224 points (P < 0.05); university education level increased the acceptance rate of TCM treatment by 9.171% (P < 0.05) and the approval rate of TCM treatment by 40.212% (P < 0.01). Conclusions There was a lack of awareness of pneumoconiosis symptoms among patients, and the rate of acceptance of TCM treatment was not high, but the degree of approval for TCM treatment was relatively high. Health education for the less educated patients and promotion of TCM treatment should be strengthened. [ABSTRACT FROM AUTHOR]

High-intensity land use and fragmented habitats are becoming more prevalent with urbanization, thereby accelerating the demand for maintaining and improving the ecological connectivity of habitat patches in high-density built-up areas. Previous studies have shown that small dispersed patches are crucial for enhancing connectivity across an entire landscape. However, as an important component of urban green space, residential green space in high-density built-up areas is often overlooked in ecological connectivity analysis. Taking Futian district, Shenzhen, as a case study, we explored the ecological connectivity in high-density built-up areas considering not only habitat patches but also green areas in residential quarters. We identified ecological patches and green areas in the residential areas of the study area. This was followed by a functional connectivity analysis under different scenarios. Several protection suggestions for improving ecological connectivity have been proposed based on functional connectivity analyses under different scenarios. The results show: 1) The area of residential green space in Futian district is 3.86 km2, covering 26.9% of the total green space in the study area, with the western part being sparser than other regions. The total area of the ecological patches was 14.34 km2, and the importance of the patches was not consistent with their size. The ecological connectivity of Lianhuashan Park in the central region, Lichi Park in the eastern region, and Huanggang Park in the southern region is greatly affected by the contiguous or continuously distributed strips of residential green space around them. 2) Residential green spaces affect eco-connectivity primarily by lowering corridor resistance, creating connectors for regions that require protection, and supporting biological flow. In particular, it had the largest effect on middleresistance corridors (the unit cost distance was reduced by 29.2%) and alleviated the situation of pinch points formed in narrow low-resistance channels in high-density built-up areas. 3) The ecological pinch points that recurred in the ecological network under different scenarios of connecting residential green spaces and different resistance thresholds were identified as the most valuable primary pinch points for protection. It is recommended to strengthen the intersection of Xinzhou Road and Fumin Road and prioritize the protection of residential green spaces located near the ecological patches and on the topological connection between the ecological patches, with a scale exceeding the average size of 5,920.22 m2. Through the analysis of pinch points in various scenarios, it was found that 21 pinch points, including those close to Lianhuashan Park, could be used as substitute green spaces for urban renewal projects when nearby residential green spaces are destroyed or occupied. This supports the preservation of functional connectivity in urban renewal projects. It is increasingly difficult to construct significant habitat patches in high-density built-up areas to compensate for habitat fractures. The results identified the significant location and proportion of residential green spaces as critical bio-flow carriers in Futian District. These findings could encourage more comprehensive urban conservation plans that incorporate both sizable habitat patches and residential green spaces. These findings can be used to create more effective sustainable development plans that encourage biodiversity in urban renewal planning. [ABSTRACT FROM AUTHOR]

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Copyright of Control Theory & Applications / Kongzhi Lilun Yu Yinyong is the property of Editorial Department of Control Theory & Applications and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Hainan Medical University is the property of Journal of Hainan Medical College Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Journal of Data Acquisition & Processing / Shu Ju Cai Ji Yu Chu Li is the property of Editorial Department of Journal of Nanjing University of Aeronautics & Astronautics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Copyright of Journal of Shanghai University / Shanghai Daxue Xuebao is the property of Journal of Shanghai University (Natural Sciences) Editorial Office and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of Fly Ash Comprehensive Utilization is the property of Hebei Fly Ash Comprehensive Utilization Magazine Co., Ltd. and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

The rej uvenation and protection of an ancient Ginkgo biloba tree in Pinghu City was carried out through the implementation of rejuvenation techniques, such as the masonry of drained and ventilating ditches, soil excavation and root treatment, allocation of back filled earth and replacement of soil, branch pruning and trimming, tree body decaying, tree body filling, hoop fixing and support protection, the changes of soil quality and the growth of new shoots before and after the implementation of rej uvenation techniques were monitored and analyzed. The results showed that the contents of soil organic carbon and total nitrogen increased by 50. 9% and 60. 1% (PV0. 05), and the ratios of carbon to phosphorous, carbon to potassium, nitrogen to phosphorous, nitrogen to potassium in soil were also signcantly increased (P<0. 05). The volume weight of soil decreased by 31. 3% (P<0. 05), while the total porosity increased by 65. 1 % (PVO. 05), and the number of significant correlations among the soil indexes decreased from 8 pairs to 4 pairs. The growth of new shoots in ancient Ginkgo biloba was significantly increased by 28. 9%〜34. 7% （P<0. 05）. [ABSTRACT FROM AUTHOR]

Copyright of Natural Gas Industry is the property of Natural Gas Industry Journal Agency and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

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Copyright of Journal of Geodesy & Geodynamics (1671-5942) is the property of Editorial Board Journal of Geodesy & Geodynamics and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)