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Formation and evolution of supercritical geofluid

Science China Earth Sciences 2025年第1期68卷 39-51页

作者： Huaiwei NI Yilin XIAO Xiaolin XIONG Xiandong LIU Chunxiao GAO Yi-Xiang chen Yunguo LI Wan-Cai LI Xuan GUO yang-yang WANG Dong-Bo TAN Li ZHANG State Key Laboratory of Lithospheric and Environmental Coevolution University of Science and Technology of China Deep Space Exploration Laboratory/School of Earth and Space Sciences University of Science and Technology of China Guangzhou Institute of Geochemistry Chinese Academy of Sciences School of Earth Sciences and Engineering Nanjing University State Key Lab of Superhard Materials Jilin University

In this work, we provide a comprehensive review on the formation, evolution, properties, and effects of supercritical geofluid. In Earth's interior, enhanced miscibility between H2O and silicate by the addition of special components or by the increase of pressure and temperature gives rise to supercritical geofluid with a significant amount of both H2O and silicate *** formation of supercritical geofluid in magmatic-hydrothermal systems, typified by pegmatite system, is governed by meltfluid critical curve. The formation of supercritical geofluid in metamorphic systems, typified by subducted slab, is governed by the second critical end point. Experimental results suggest that the presence of boron and fluorine in pegmatite system makes it possible to form supercritical geofluid at crustal depths, but the release of supercritical geofluid from subducted slab is withheld until almost 100 km depth. A major presence of both H2O and depolymerized structural units（monomers, dimers, etc.） endows supercritical geofluid with unique physical properties including low density, low elastic moduli, low viscosity, high diffusivity,and high electrical conductivity. Supercritical geofluid can effectively mobilize a variety of elements even including high field strength elements and heavy rare earth elements. The chemical signatures of supercritical geofluid can be inherited by metasomatized mantle and mantle-derived melts, and this could give an explanation of the oxidation of arc magmas. Phase separation of supercritical geofluid through the mechanism of spinodal decomposition leads to formation of a melt network. Multiphase fluid inclusions recovered from subduction zone rocks and pegmatites are possible relics of supercritical geofluid. Supercritical geofluid can cause electrical anomaly and low seismic velocity near the top of subducted slab, and can be linked with intermediate-focus earthquakes. Supercritical geofluid may have played a crucial role in the formation of pe

关键词： Supercritical geofluid Miscibility Subduction zone Pegmatite

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激光熔覆316L涂层晶粒生长取向与形貌对其耐蚀性能的影响

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表面技术 2023年第5期52卷 378-387页

作者：周勇徐龙周爽董会郭鹏飞杨紫辰张三齐西安石油大学材料科学与工程学院西安710065 西安石油大学西安市高性能油气田材料重点实验室西安710065 古交西山发电有限公司太原030206

目的表征316L激光熔覆层的晶粒取向、形貌与其耐蚀性之间的关系,阐明晶粒形态对316L熔覆层耐蚀性能的影响原理。方法在Q235钢板上激光熔覆制备搭接率为20%、35%、50%的316L不锈钢熔覆层,获得具有不同取向与含量柱状晶的熔覆层。采用光... 详细信息

目的表征316L激光熔覆层的晶粒取向、形貌与其耐蚀性之间的关系,阐明晶粒形态对316L熔覆层耐蚀性能的影响原理。方法在Q235钢板上激光熔覆制备搭接率为20%、35%、50%的316L不锈钢熔覆层,获得具有不同取向与含量柱状晶的熔覆层。采用光学显微镜、扫描电子显微镜、能谱仪、X射线衍射仪、电化学工作站对熔覆层的显微组织、元素分布、物相组成及耐蚀性能进行表征。结果熔覆层的晶粒形态和耐蚀性能受到搭接率影响。熔覆层因搭接发生部分重熔和回火,产生了横向柱状晶,随着搭接率从20%增大至50%,横向柱状晶含量从25%提升到41%。搭接率不影响熔覆层物相组成,熔覆层主要物相均为γ相。横向柱状晶含量在38%和41%时的熔覆层自腐蚀电流密度较25%含量的熔覆层下降1个数量级,分别为3.73、1.34μA·cm^(-2),熔覆层耐蚀性能随横向柱状晶含量的增加而提升。结论熔覆层物相与搭接率无关,但搭接率会导致熔覆层晶粒生长取向与形貌发生变化:随着搭接率的增大,晶粒由等轴晶转变为横向柱状晶。横向柱状晶降低了腐蚀性介质的传输效率,导致熔覆层耐蚀性大幅度提升。

关键词：激光熔覆搭接率 316L 晶粒取向耐蚀性能

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跨上皮快速交联术联合术后配戴RGPCL治疗圆锥角膜的疗效

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国际眼科杂志 2021年第7期21卷 1257-1260页

作者：叶照达胡艳红陈子扬福建中医药大学中国福建省福州市350122 福建中医药大学附属第二人民医院眼科中国福建省福州市350003 福建省中医药科学院门诊部眼科中国福建省福州市350003

目的:探讨跨上皮快速交联术联合术后配戴硬性透气性角膜接触镜(RGPCL)治疗圆锥角膜患者的临床效果。方法:回顾性研究。选取2014-10/2015-10在福建中医药大学附属第二人民医院确诊为进展性圆锥角膜并进行跨上皮快速角膜交联术联合术后配... 详细信息

目的:探讨跨上皮快速交联术联合术后配戴硬性透气性角膜接触镜(RGPCL)治疗圆锥角膜患者的临床效果。方法:回顾性研究。选取2014-10/2015-10在福建中医药大学附属第二人民医院确诊为进展性圆锥角膜并进行跨上皮快速角膜交联术联合术后配戴RGPCL的患者16例25眼,平均年龄25.31±5.92岁,术前最大角膜曲率为58.96±6.76D,角膜最薄点厚度为439.52±53.24μm。使用核黄素及45mW/cm^(2)紫外光照射进行跨上皮快速交联,总能量7.2J/cm^(2),术后配戴RGPCL。术后随访3~6a,平均52.44±11.39mo,观察患者治疗前后BCVA(配戴RGPCL)、平坦子午线角膜曲率(K1)、陡峭子午线角膜曲率(K2)、最大角膜曲率(Kmax)、角膜屈光力(MPP)、角膜前后表面膨隆状态评价参数包括BCVf、BCVb、前表面曲率不对称指数(SIf)、后表面曲率不对称指数(SIb)、圆锥角膜前表面最高点(KVf)、圆锥角膜后表面最高点(KVb)、角膜最薄处厚度(ThkMin)、晶状体混浊、角膜内皮细胞计数。结果:所有患者手术过程顺利,无术中并发症,术后1d均有轻微刺痛伴异物感,轻微畏光流泪;2例2眼患者术后1d摘绷带镜后角膜上皮小片脱失,重新戴绷带镜3d后上皮愈合;随访期间所有患者均未出现晶状体混浊,角膜内皮细胞计数较术前无差异(P>0.05);术后BCVA(配戴RGPCL)较术前BCVA明显改善,术后Kmax、SIf、KVf、BCVf、BCVb均较术前降低(P<0.05)。结论:跨上皮快速角膜交联术联合RGPCL治疗圆锥角膜能有效且安全控制圆锥角膜进展,长期效果稳定。

关键词：圆锥角膜角膜交联术硬性透气性角膜接触镜核黄素紫外光

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Metabolic reprogramming: a new option for the treatment of spinal cord injury

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Neural Regeneration Research 2025年第4期20卷 1042-1057页

作者： Jiangjie chen Jinyang chen Chao Yu Kaishun Xia Biao yang Ronghao Wang Yi Li Kesi Shi Yuang Zhang Haibin Xu Xuesong Zhang Jingkai Wang Qixin chen chengzhen Liang Department of Orthopedics The Second Affiliated Hospital of Zhejiang University School of MedicineHangzhouZhejiang ProvinceChina Orthopedics Research Institute of Zhejiang University Zhejiang UniversityHangzhouZhejiang ProvinceChina Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province HangzhouZhejiang ProvinceChina Clinical Research Center of Motor System Disease of Zhejiang Province HangzhouZhejiang ProvinceChina Qiandongnan Prefecture People’s Hospital KailiGuizhou ProvinceChina Department of Orthopedics Fourth Medical CenterChinese PLA General HospitalBeijingChina

Spinal cord injuries impose a notably economic burden on society,mainly because of the severe after-effects they *** the ongoing development of various therapies for spinal cord injuries,their effectiveness remains ***,a deeper understanding of metabolism has opened up a new therapeutic opportunity in the form of metabolic *** this review,we explore the metabolic changes that occur during spinal cord injuries,their consequences,and the therapeutic tools available for metabolic *** spinal cord metabolism is characterized by independent cellular metabolism and intercellular metabolic ***,spinal cord injury results in metabolic disorders that include disturbances in glucose metabolism,lipid metabolism,and mitochondrial *** metabolic disturbances lead to corresponding pathological changes,including the failure of axonal regeneration,the accumulation of scarring,and the activation of *** rescue spinal cord injury at the metabolic level,potential metabolic reprogramming approaches have emerged,including replenishing metabolic substrates,reconstituting metabolic couplings,and targeting mitochondrial therapies to alter cell *** available evidence suggests that metabolic reprogramming holds great promise as a next-generation approach for the treatment of spinal cord *** further advance the metabolic treatment of the spinal cord injury,future efforts should focus on a deeper understanding of neurometabolism,the development of more advanced metabolomics technologies,and the design of highly effective metabolic interventions.

关键词： axons glycolysis metabolic reprogramming metabolism mitochondria neural regeneration neuroprotection oxidative phosphorylation spinal cord injury therapy

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Graphene Aerogel Composites with Self‑Organized Nanowires‑Packed Honeycomb Structure for Highly Efficient Electromagnetic Wave Absorption

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Nano-Micro Letters 2025年第2期17卷 533-547页

作者： Xiao You Huiying Ouyang Ruixiang Deng Qiuqi Zhang Zhenzhong Xing Xiaowu chen Qingliang Shan Jinshan yang Shaoming Dong State Key Laboratory of High Performance Ceramics and Superfine Microstructure Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050People’s Republic of China Key Laboratory of Inorganic Coating Materials CAS Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050People’s Republic of China Structural Ceramics and Composites Engineering Research Center Shanghai Institute of CeramicsChinese Academy of SciencesShanghai 200050People’s Republic of China Center of Materials Science and Optoelectronics Engineering University of Chinese Academy of SciencesBeijing 100049People’s Republic of China School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210People’s Republic of China School of Materials Science and Engineering Zhejiang Sci-Tech UniversityHangzhou 310018People’s Republic of China University of Chinese Academy of Sciences Beijing 100039People’s Republic of China

With vigorous developments in nanotechnology,the elaborate regulation of microstructure shows attractive potential in the design of electromagnetic wave ***,a hierarchical porous structure and composite heterogeneous interface are constructed successfully to optimize the electromagnetic loss *** macro–micro-synergistic graphene aerogel formed by the ice template‑assisted 3D printing strategy is cut by silicon carbide nanowires(SiC_(nws))grown in situ,while boron nitride(BN)interfacial structure is introduced on graphene *** unique composite structure forces multiple scattering of incident EMWs,ensuring the combined effects of interfacial polarization,conduction networks,and magnetic-dielectric ***,the as-prepared composites present a minimum reflection loss value of−37.8 dB and a wide effective absorption bandwidth(EAB)of 9.2 GHz(from 8.8 to 18.0 GHz)at 2.5 ***,relying on the intrinsic high-temperature resistance of SiC_(nws) and BN,the EAB also remains above 5.0 GHz after annealing in air environment at 600℃ for 10 h.

关键词： Hierarchical porous structure Interface High-temperature resistance Graphene aerogel composites Electromagnetic wave absorption

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OCTA定量分析补阳还五汤加味对非增殖型糖尿病视网膜病变患者视盘血流的影响

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国际眼科杂志 2023年第12期23卷 2040-2045页

作者：石颖陈子扬叶照达柯发杰胡艳红陈胜福建中医药大学附属第二人民医院眼科福建省福州市350003 福建省中医药科学院门诊部福建省福州市350003

目的:观察补阳还五汤加味治疗气阴两虚、络脉瘀阻型非增殖型糖尿病视网膜病变(NPDR)的临床疗效,并应用光学相干断层扫描血管成像(OCTA)定量分析治疗前后视盘旁血流密度的变化。方法:采用前瞻性随机对照试验。收集2022-06/11期间我院收... 详细信息

目的:观察补阳还五汤加味治疗气阴两虚、络脉瘀阻型非增殖型糖尿病视网膜病变(NPDR)的临床疗效,并应用光学相干断层扫描血管成像(OCTA)定量分析治疗前后视盘旁血流密度的变化。方法:采用前瞻性随机对照试验。收集2022-06/11期间我院收治的符合气阴两虚、络脉瘀阻型NPDR患者58例99眼,随机分为对照组29例48眼,采用2019年美国眼科学会发布的糖尿病视网膜病变推荐方案进行基础治疗(对于轻度NPDR患者进行控制血糖、糖尿病健康教育、定期随访;中度NPDR患者必要时增加局部或格栅样激光光凝治疗),观察组29例51眼在对照组的基础上加用补阳还五汤加味口服治疗1mo。比较两组患者治疗前后最佳矫正视力(BCVA)、中医证候疗效、视盘旁放射状毛细血管网血流密度(ppVD)及视盘旁视网膜神经纤维层(pRNFL)厚度变化。结果:治疗1mo后观察组BCVA(LogMAR)为0.20(0.10,0.30),较对照组0.30(0.20,0.40)明显改善(P<0.05)。治疗1mo后观察组中医证候疗效优于对照组(P<0.05)。观察组治疗1mo后各象限ppVD均较治疗前明显提高,且观察组各象限ppVD均高于对照组(P<0.05)。观察组治疗1mo后上方、颞侧象限及全周平均pRNFL厚度较治疗前升高,且观察组上方、颞侧、下方象限和全周平均pRNFL厚度均高于对照组(P<0.05)。结论:气阴两虚、络脉瘀阻型NPDR患者服用补阳还五汤加味后可改善视力、提高中医证候疗效,可能与其能提高视盘旁放射状毛细血管网血流密度和减少视盘旁神经纤维层的损伤有关。

关键词：非增殖型糖尿病视网膜病变补阳还五汤加味视盘血流光学相干断层扫描血管成像(OCTA)

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E-PRedictor: an approach for early prediction of pull request acceptance

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Science China(Information Sciences) 2025年

作者： Kexing chen Lingfeng BAO Xing HU Xin XIA Xiaohu yang State Key Laboratory of Blockchain and Data Security Zhejiang University Software Engineering Application Technology Lab

A pull request (PR) is an event in Git where a contributor asks project maintainers to review code he/she wants to merge into a project. The PR mechanism greatly improves the efficiency of distributed software development in the opensource community. Nevertheless, the massive number of PRs in an open-source software (OSS) project increases the workload of developers. To reduce the burden on developers, many previous studies have investigated factors that affect the chance of PRs getting accepted and built prediction models based on these factors. However, most prediction models are built on the data after PRs are submitted for a while (e.g., comments on PRs), making them not useful in practice. Because integrators still need to spend a large amount of effort on inspecting PRs. In this study, we propose an approach named E-PRedictor (earlier PR predictor) to predict whether a PR will be merged when it is created. E-PRedictor combines three dimensions of manual statistic features (i.e., contributor profile, specific pull request, and project profile) and deep semantic features generated by BERT models based on the description and code changes of PRs. To evaluate the performance of E-PRedictor, we collect475192 PRs from 49 popular open-source projects on GitHub. The experiment results show that our proposed approach can effectively predict whether a PR will be merged or not. E-PRedictor outperforms the baseline models (e.g., Random Forest and VDCNN) built on manual features significantly. In terms of F1@Merge, F1@Reject, and AUC (area under the receiver operating characteristic curve), the performance of E-PRedictor is 90.1%, 60.5%, and 85.4%, respectively.

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实时数据库在舰船电子信息系统中的应用研究

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中国舰船研究 2006年第4期1卷 26-29页

作者：杨子晨冯浩中国舰船研究设计中心湖北武汉430064

从舰船电子信息系统的发展趋势出发,分析了目前舰船电子信息系统中数据库系统的应用特点,阐述了实时数据库的技术优势。针对主流的商用实时数据库系统和工程需求,选择RDM实时数据库开展研究。阐述了RDM实时数据库系统的基本结构、开发... 详细信息

从舰船电子信息系统的发展趋势出发,分析了目前舰船电子信息系统中数据库系统的应用特点,阐述了实时数据库的技术优势。针对主流的商用实时数据库系统和工程需求,选择RDM实时数据库开展研究。阐述了RDM实时数据库系统的基本结构、开发方法和步骤,对RDM的两种技术实现方式进行了性能测试和对比测试,并对商用关系数据库和实时数据库开展了性能对比测试,试验数据表明应用实时数据库系统确实拥有性能上的优势。这些研究为未来实时数据库在舰船电子信息系统中的应用进行了有益的尝试。

关键词：舰船电子信息系统实时数据库性能测试对比测试

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葡萄膜炎并发白内障术中使用Chop钩象限性机械扩张瞳孔的效果

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国际眼科杂志 2022年第12期22卷 1943-1947页

作者：陈子扬曹俊昌叶照达陈胜胡艳红福建省中医药科学院综合门诊部福建福州350003 福建中医药大学附属第二人民医院眼科福建福州350003

目的:报道在葡萄膜炎并发白内障患者的白内障手术中使用一种特殊的Chop钩象限性机械扩张瞳孔的手术效果。方法:单手术、回顾性、非比较病例报道。纳入在白内障术中接受Chop钩象限性机械扩张瞳孔特殊技术治疗的葡萄膜炎并发白内障患者。... 详细信息

目的:报道在葡萄膜炎并发白内障患者的白内障手术中使用一种特殊的Chop钩象限性机械扩张瞳孔的手术效果。方法:单手术、回顾性、非比较病例报道。纳入在白内障术中接受Chop钩象限性机械扩张瞳孔特殊技术治疗的葡萄膜炎并发白内障患者。结果:共14例葡萄膜炎并发白内障患者16眼,男性5例,女性9例,平均年龄58.0±13.8(29~79)岁,在白内障手术中接受Chop钩象限性机械扩张瞳孔治疗。采用象限性机械瞳孔扩张后,扩张瞳孔直径为5.81±0.46(5.0~6.5)mm,并可保持至手术结束。术后,瞳孔居中,约为圆形,瞳孔直径为3.0~4.0mm。在某些情况下,在虹膜和瞳孔的边缘观察到小切迹,但患者没有出现眩光不适,直接和间接的光反射大致正常。散瞳孔治疗后,瞳孔变圆,与人工晶状体无粘连,术后最佳矫正视力(BCVA)明显优于术前(P21mmHg)、虹膜撕裂、虹膜异常、后粘连。结论:该象限机械瞳孔扩张技术对于葡萄膜炎并发白内障患者是一种简单有效的白内障手术方法,且并发症发生率低。

关键词：瞳孔扩张葡萄膜炎并发性白内障

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Nitrogen addition promotes soil carbon accumulation globally

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Science China Life Sciences 2025年第1期68卷 284-293页

作者： Xuemei yang Suhui Ma Erhan Huang Danhua Zhang Guoping chen Jiangling Zhu chengjun Ji Biao Zhu Lingli Liu Jingyun Fang Institute of Ecology College of Urban and Environmental Sciencesand Key Laboratory for Earth Surface Processes of the Ministry of EducationPeking University Ministry of Education Key Laboratory for Transboundary Ecosecurity of Southwest China School of Ecology and Environmental ScienceYunnan University State Key Laboratory of Vegetation and Environmental Change Institute of BotanyChinese Academy of Sciences

Soil is the largest carbon(C) reservoir in terrestrial ecosystems and plays a crucial role in regulating the global C cycle and climate *** nitrogen(N) deposition has been widely considered as a critical factor affecting soil organic carbon(SOC) storage, but its effect on SOC components with different stability remains unclear. Here, we analyzed extensive empirical data from 304 sites worldwide to investigate how SOC and its components respond to N addition. Our analysis showed that N addition led to a significant increase in bulk SOC(6.7%), with greater increases in croplands(10.6%) and forests(6.0%) compared to grasslands(2.1%). Regarding SOC components, N addition promoted the accumulation of plant-derived C(9.7%–28.5%) over microbial-derived C(0.2%), as well as labile(5.7%) over recalcitrant components(–1.2%), resulting in a shift towards increased accumulation of plant-derived labile C. Consistently, N addition led to a greater increase in particulate organic C(11.9%) than mineral-associated organic C(3.6%), suggesting that N addition promotes C accumulation across all pools, with more increase in unstable than stable pools. The responses of SOC and its components were best predicted by the N addition rate and net primary productivity. Overall, our findings suggest that N enrichment could promote the accumulation of plant-derived and non-mineral associated C and a subsequent decrease in the overall stability of soil C pool, which underscores the importance of considering the effects of N enrichment on SOC components for a better understanding of C dynamics in soils.

关键词： meta-analysis nitrogen enrichment soil organic carbon carbon accumulation carbon stability

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