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Nitrogen addition promotes soil carbon accumulation globally

Science China Life Sciences 2025年第1期 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.

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Cerebral fat embolism following autologous fat injection in facial reconstruction:A case report

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World Journal of Clinical Cases 2025年第2期13卷 50-58页

作者： Xiu-Ying chen Fa Shen Chang cheng Yu-Han Wang wen-Chao cheng De-Zhi Yuan wen Huang Department of Neurology Chongqing Emergency Medical CenterChongqing University Central HospitalChongqing 400000China Department of Neurology Xinqiao HospitalThe Army Medical University(Third Military Medical University)Chongqing 400000China

BACKGROUND Autologous fat injection in facial reconstruction is a common cosmetic *** cerebral fat embolism(CFE)as a complication is rare,it carries serious health *** SUMMARY We present a case of a 29-year-old female patient who developed acute CFE following facial fat filling *** the surgery,the patient experienced symptoms including headache,nausea,vomiting,and difficulty breathing,which was followed by neurological symptoms such as slurred speech and left-sided *** physical examination and auxiliary investigations,including blood tests,head and neck computed tomography angiography,and cranial magnetic resonance diffusion-weighted imaging,were performed upon *** clinical diagnosis was acute cerebral embolism following facial fat filling *** included measures to improve cerebral circulation,dehydration for intracranial pressure reduction,nutritional support,and rehabilitation therapy for left limb *** patient showed a significant improvement in symptoms after 2 weeks of *** recovered left limb muscle strength to grade 5,had clear speech,and experienced complete relief of *** Our case highlights the potential occurrence of severe complications in patients undergoing fat injection in facial *** prevent these complications,plastic surgeons should enhance their professional knowledge and skills.

关键词： Cerebral fat embolism Mechanical thrombectomy Thrombolysis Steroid therapy Symptomatic treatment Case report

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高校体检2351例调查分析

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同济大学学报（医学版） 2004年第2期25卷 151-153页

作者：方敏霞翁美雯陈芳同济大学医院内科上海200092

目的　通过同济大学 2 35 1例教职工体检资料分析 ,了解教职工健康状况及其影响健康因素。方法　对 2 0 0 2年教职工体检指标 (高血压、高血脂、高血糖、脂肪肝、心电图 )进行比较。结果　教职工不同性别、年龄、职业其体检指标差异有... 详细信息

目的　通过同济大学 2 35 1例教职工体检资料分析 ,了解教职工健康状况及其影响健康因素。方法　对 2 0 0 2年教职工体检指标 (高血压、高血脂、高血糖、脂肪肝、心电图 )进行比较。结果　教职工不同性别、年龄、职业其体检指标差异有统计学意义 (P <0 .0 0 5 )。结论　加强高校教职工健康教育 ,防治内科系统常见病及慢性病。

关键词：教职工体检健康教育

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稠油计量站单井计量技术的实施

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特种油气藏 2003年第5期10卷 103-104,106页

作者：张殿文秦芳晨陈平中油辽河石油勘探局辽宁盘锦124010

对稠油计量站单井计量过程中所存在的问题进行分析,对稠油计量站的工艺、计量和控制技术进行改造,筛选稠油计量仪等设备。结合科研和生产实际,研制新型流量计,将自控技术应用到生产实际中,解决了稠油计量站中集输难和计量误差大等问题。

关键词：稠油计量站单井计量分离器高温稠油智能腰轮流量计自动化控制

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基于微流控芯片评估富血小板血浆促进子宫内膜细胞的增殖

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中国组织工程研究 2025年第10期29卷 2091-2096页

作者：闻哲嘉吕芳苏州大学附属第二医院生殖中心江苏省苏州市215004

背景:富血小板血浆可促进薄型子宫内膜细胞的增殖,但存在剂量难以控制、取样困难等问题。微流控芯片具有高通量、低消耗、操作简便等优点,为模拟子宫内膜细胞在体微环境提供了新途径。目的:利用三通道微流控芯片构建富血小板血浆促进子... 详细信息

背景:富血小板血浆可促进薄型子宫内膜细胞的增殖,但存在剂量难以控制、取样困难等问题。微流控芯片具有高通量、低消耗、操作简便等优点,为模拟子宫内膜细胞在体微环境提供了新途径。目的:利用三通道微流控芯片构建富血小板血浆促进子宫内膜细胞增殖的研究模型。方法:从1名女性外周静脉血中提取富血小板血浆。采用含不同浓度[0%(对照),0.5%,1%,2%]富血小板血浆的无血清细胞培养基培养人子宫内膜间质细胞,采用划痕实验检测细胞迁移,CCK-8法检测细胞增殖。利用聚二甲基硅氧烷胶制备微流控芯片,该微流控芯片设计有3个通道,中间通道为细胞外基质水凝胶通道,左右两侧分别为人子宫内膜间质细胞及富血小板血浆通道,3个通道之间保存有可以相互沟通以及实现物质交换的面积,实验组两侧通道分别加入人子宫内膜间质细胞(绿色荧光蛋白GFP标记)和含0.5%富血小板血浆的无血清培养基,对照组两侧通道分别加入人子宫内膜间质细胞(绿色荧光蛋白GFP标记)和无血清细胞培养基,共培养48 h后,采用Ki67免疫荧光染色观察细胞增殖与迁移。结果与结论:(1)细胞划痕实验和CCK-8检测结果显示,与对照组相比,0.5%,1%,2%浓度的富血小板血浆可促进人子宫内膜间质细胞的迁移与增殖(P <0.05),并且0.5%浓度富血小板血浆的促进细胞迁移与增殖作用强于其他2个浓度(P <0.05);(2)Ki67免疫荧光染色结果显示,与对照组相比,实验组人子宫内膜间质细胞的增殖和迁移能力更强;(3)实验证实通过三通道微流控芯片可以模拟子宫内膜细胞的微环境,同时利用该系统验证了富血小板血浆可显著促进子宫内膜间质细胞的增殖与迁移。

关键词：微流控芯片富血小板血浆子宫内膜间质细胞子宫内膜增殖迁移细胞外基质薄型子宫内膜子宫内膜相关疾病

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2016年6月4日华南一次罕见强对流天气过程分析

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广东气象 2017年第4期39卷 10-14页

作者：李影虹苏文陈芳丽惠州市气象局广东惠州516003 惠阳区气象局广东惠州516211

利用ECMWF的ERAdata再分析资料、Micaps实况数据、多普勒雷达产品以及自动气象站观测数据等资料,对2016年6月4日发生在广东省的一次强对流天气过程进行了分析。结果表明:该次发生在西南暖湿气流中的罕见强对流天气呈现出典型的强飑线特... 详细信息

利用ECMWF的ERAdata再分析资料、Micaps实况数据、多普勒雷达产品以及自动气象站观测数据等资料,对2016年6月4日发生在广东省的一次强对流天气过程进行了分析。结果表明:该次发生在西南暖湿气流中的罕见强对流天气呈现出典型的强飑线特征,属于低层暖平流强迫型;前期高温高湿的闷热天气状态、充沛的水汽供应和水汽的辐合,以及中尺度能量锋的形成,都非常有利于强对流天气的发生发展;水汽通量散度对强对流天气的发生发展有非常重要的指示意义;垂直速度的负值大值中心不但开始于对流层中高层,而且在发展过程中由中心向下传递;多个对流单体和超级单体在雷达回波图上呈典型的弓形回波特征,且长时间维持,产生了强风、雷暴、冰雹等强对流天气现象。

关键词：天气预报强对流飑线低层暖平流强迫华南地区

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Dissecting the cell microenvironment of ovarian endometrioma through single-cell RNA sequencing

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Science China Life Sciences 2025年第1期 116-129页

作者： Jiangpeng Wu Siyu Xia wenting Ye Yan Sun Jing Cai Fubing Yu Haiping wen Xiuwei Yi Taikang Li Mingwei chen Jiayun chen Ge Song Chuanbin Yang Yali Song Jigang Wang Department of Reproductive Medicine Dongguan Maternal and Child Health Care Hospital Department of Urology and Shenzhen Clinical Research Centre for GeriatricsShenzhen People's HospitalSouthern University of Science and Technology State Key Laboratory for Quality Ensurance and Sustainable Use of Dao-di Herbs Artemisinin Research Centerand Institute of Chinese Materia MedicaChina Academy of Chinese Medical Sciences Reproductive Medicine Center Foshan Women and Children Hospital State Key Laboratory of Antiviral Drugs School of PharmacyHenan University

Ovarian endometrioma（OE）, also known as “chocolate cysts,” is a cystic mass that develops in the ovaries due to endometriosis and is a common gynecological condition characterized by the growth of endometrial tissue outside the uterus, leading to symptoms such as dysmenorrhea, pelvic pain, and infertility. However, the precise molecular and cellular mechanisms driving this pathophysiology remain largely unknown, posing challenges for diagnosis and treatment. Here, we employed integrated single-cell transcriptomic profiling of over 52,000 individual cells from endometrial tissues of OE patients and healthy donors and identified twelve major cell populations. We identified notable alterations in cell type-specific proportions and molecular signatures associated with OE. Notably, the activation of IGFBP5+macrophages with pro-inflammatory properties, NK cell exhaustion, and aberrant proliferation of IQCG+and KLF2+epithelium are key features and may be the potential mechanisms underlying the pathogenesis of OE. Collectively, our data contribute to a better understanding of OE at the single cell level and may pave the way for the development of novel therapeutic strategies.

关键词： ovary high-throughput sequencing transcriptomics gene expression analysis ligand-receptor analysis

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A versatile synthetic strategy towards rare earth based metal-organic frameworks

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Science China Chemistry 2025年

作者： Quan Shi Yun-Hao Xu Ming-Hui chen Peng Zhao wen-Bo Deng Ji Xiong Kai Guo Ya-Qing Feng Bao Zhang School of Chemical Engineering and Technology Tianjin University Tianjin Collaborative Innovation Center of Chemical Science and Engineering Guangdong Laboratory Chemistry & Fine Chemical Industry Jieyang Center

Rare earth metal-organic frameworks (RE-MOFs) have drawn wide attention owing to diverse network structures and various application ***,due to the unpredictable formation of the nodes,it is still challenging to design novel RE-MOFs.A novel versatile strategy was developed employing a RE-acetate complex (RE2(CH3COO)6·4H2O) as a precursor to construct RE-MOFs.2D RE-MOFs (RE-DBP) and 3D RE-MOFs (RE-TCPP) could be obtained by using dicarboxylic porphyrin ligands H2DBP and tetracarboxylic porphyrin ligands H2TCPP,*** RE-MOFs were further synthesized to verify the universality of the *** crystalline RE-MOFs could also be prepared at room temperature via the developed strategy,which could significantly promote large-scale preparation and practical application of *** proof of the concept,the performance of porphyrin-based RE-MOFs was investigated in the photocatalytic cycloaddition of CO2with *** the RE-DBP(Co) MOFs,Tb-DBP(Co) exhibited the best photocatalytic performance,which was also greater than that of the corresponding 3D MOF Tb-TCPP(Co) due to the optimal 2D structure and thus the accelerated photogenerated charge separation and transfer *** work not only provides a novel versatile strategy to design and develop RE-MOFs,but also proposes a promising approach for the potential bulk production of RE-MOFs at room temperature.

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“互联网+”教育背景下高等职业教育学生评价体系的研究

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天津职业院校联合学报 2017年第4期19卷 3-7页

作者：朱方闻焦辰顾祎娜天津市河东区职工大学天津300162

"互联网+"教育背景对高等职业教育的发展提出了崭新的课题,"互联网+"教育理念在影响高职教育"教"与"学"的同时,还对高职教育学生的评价体系带来深刻了的影响,这就需要高职教育学生评价体系不断改革调整,积极应对"互联网+"的教育理念。... 详细信息

"互联网+"教育背景对高等职业教育的发展提出了崭新的课题,"互联网+"教育理念在影响高职教育"教"与"学"的同时,还对高职教育学生的评价体系带来深刻了的影响,这就需要高职教育学生评价体系不断改革调整,积极应对"互联网+"的教育理念。通过对学生评价体系中存在问题的分析与研究,提出了高职教育学生评价体系的基本目标、指导原则和构成要素,并在此基础上构建高职教育学生评价的模块体系,以期在"互联网+"教育背景下,以学生评价体系为导向,进一步深入推进职业教育的新发展。

关键词： “互联网+”教育背景高等职业教育学生评价体系

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A maximum a posteriori super resolution algorithm based on multidimensional Lorentzian distribution

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Journal of Zhejiang University-Science A(Applied Physics & Engineering) 2009年第12期10卷 1705-1713页

作者： wen chen Xiang-zhong fang Yan chenG Shanghai Key Lab of Digital Media Processing and Transmissions Institute of Image Communication and Information Processing Shanghai Jiao Tong University Shanghai 200240 China College of Information Technology East China University of Political Science and Law Shanghai 201620 China

This paper presents a threshold-free maximum a posteriori (MAP) super resolution (SR) algorithm to reconstruct high resolution (HR) images with sharp edges. The joint distribution of directional edge images is modeled as a multidimensional Lorentzian (MDL) function and regarded as a new image prior. This model makes full use of gradient information to restrict the solution space and yields an edge-preserving SR algorithm. The Lorentzian parameters in the cost function are replaced with a tunable variable, and graduated nonconvexity (GNC) optimization is used to guarantee that the proposed multidimensional Lorentzian SR (MDLSR) algorithm converges to the global minimum. Simulation results show the effectiveness of the MDLSR algorithm as well as its superiority over conventional SR methods.

关键词： Edge preservation Multidimensional Lorentzian distribution (MDL) Super resolution Threshold

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