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Distribution of phytoplankton community and its influence factors in an urban river network,East China

Frontiers of Environmental Science & Engineering 2018年第6期12卷 133-144页

作者： Ling Sun Hui Wang yuanqing kan Shiliang Wang State Key Joint Laboratory of Environment Simulation and Pollution Control School of EnvironmentTsinghua UniversityBeijing 100084China Tianjin Key Laboratory of Animal and Plant Resistance College of Life SciencesTianjin Normal UniversityTianjin 300387China Tianjin Academy of Environmental Sciences Tianjin 300191China School of Geography and Tourism Qufu Normal UniversityRizhao 276826China

To reveal the distribution characteristics of phytoplankton and the main influence factors under different conditions in the urban rivers, the investigations were conducted during autumn and winter 2014 in Changzhou City, East China. 178 taxa of phytoplankton belonging to 28 functional assemblages were identified. In autumn, the phytoplankton community compositions have high similarity for enhanced hydrological connectivity. The chlorophytes and diatoms (prevailing functional groups C, F, J, P), together with euglenoids (W1), showed high proportions of biomass in the main rivers and connected rivers. It was related to the well mixed eutrophic conditions. The phytoplankton community exhibited spatiotemporal heterogeneity in winter. Affected by the low water level and temperature, the free-living phytoflagellates (X2) replaced groups F and J in the main rivers. Phytoplankton productivity was the highest in the Tongji River. Chlorophytes Dictyosphaerium ehrenbergianum and Chlamydobotrys stellata had an overwhelming superiority during the winter bloom. They were significantly correlated with ammonium, total phosphorus and biochemical oxygen demand. Affected by tail water supply, the diatoms (MP) and euglenoids (W1) dominated in a beheaded river. The multivariate analyses based on the phytoplankton functional groups helped to evaluate the relationships and variations between the urban rivers. The redundancy analysis (RDA) results showed that nitrate nitrogen, water temperature, total nitrogen and total suspended solids were the main influence factors on the phytoplankton community. Except MP, the prevailing groups all showed significant negative correlations with nitrate nitrogen. Availability and utilization of dissolved inorganic nitrogen and hydrodynamic conditions affected the phytoplankton distribution.

关键词： Phytoplankton composition Spatiotemporal distribution Functional groups Nitrate nitrogen Winter bloom

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High-risk factors related to the occurrence and development of abdominal aortic aneurysm

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Journal of Interventional Medicine 2020年第2期3卷 80-82页

作者： Tao Shuai yuanqing kan Yi Si Weiguo Fu 不详 Department of Vascular Surgery Zhongshan Hospital Fudan UniversityShanghai200032China

Abdominal aortic aneurysm(AAA) is a common and potentially dangerous vascular disease with many risk factors related to its occurrence and development. This review collects the results from recent studies of different comorbidities including hypertension, diabetes, and hyperlipidemia and summarizes their connections with AAA development and its underlying mechanisms. We believe that hypertension, diabetes, and hyperlipidemia can affect AAA occurrence and development, but more studies are needed to further explore the mechanisms.

关键词： Abdominal aortic aneurysm Hypertension Diabetes Hyperlipidemia

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Adipose-derived stem cell/FGF19-loaded microfluidic hydrogel microspheres for synergistic restoration of critical ischemic limb

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Bioactive Materials 2023年第9期27卷 394-408页

作者： Ruihan Wang Fangqian Wang Shan Lu Bin Gao yuanqing kan Tong Yuan Yisheng Xu Chen Yuan Daqiao Guo Weiguo Fu Xiaohua Yu Yi Si Department of Vascular Surgery Zhongshan Hospital Fudan UniversityShanghai200032PR China Institute of Vascular Surgery Fudan UniversityShanghai200032PR China National Clinical Research Center for Interventional Medicine Shanghai200032PR China Department of Orthopedics The Second Affiliated Hospital of Zhejiang University School of MedicineHangzhou310009ZhejiangPR China Key Laboratory of Motor System Disease Research and Precision Therapy of Zhejiang Province Hangzhou310000ZhejiangPR China State Key Laboratory of Chemical Engineering East China University of Science and TechnologyShanghai200237China

The efficacy of stem cell therapy is substantially compromised due to low cell survival rate and poor local retention post-delivery. These issues drastically limit the application of stem cells for ischemic limb therapy, which requires effective blood perfusion and skeletal muscle regeneration. Herein, based on microfluidic technology, an integrated stem cell and cytokine co-delivery system designed for functional ischemic limb salvage was constructed by first incorporating the myogenic cytokine, fibroblast growth factor 19 (FGF19), into microspheres composed of methacrylate gelatin (GelMA). Then adipose-derived stem cells (ADSCs) were highly absorbed into the porous structure of the microspheres, overcoming the insufficient loading efficiency and activities by conventional encapsulation strategy. The fabricated ADSCs/FGF19@μsphere system demonstrated a uniform size of about 180 μm and a highly porous structure with pore sizes between 20 and 40 μm. The resultant system allowed high doses of ADSCs to be precisely engrafted in the lesion and to survive, and achieved sustained FGF19 release in the ischemic region to facilitate myoblast recruitment and differentiation and myofibrils growth. Furthermore, the combination of ADSCs and FGF19 exhibited a positive synergistic effect which substantially improved the therapeutic benefit of angiogenesis and myogenesis, both in vitro and in vivo. In summary, a stem cell and cytokine co-delivery system with the properties of easy preparation and minimal invasiveness was designed to ensure highly efficient cell delivery, sustained cytokine release, and ultimately realizes effective treatment of ischemic limb regeneration.

关键词： Microfluidic technology Stem cell Cytokine Porous microspheres Ischemic limb salvage

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Interactions between Ipomoea aquatica and Microbial Populations

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Animal Husbandry and Feed Science 2014年第4期6卷 175-179页

作者： kan yuanqing Sun Ling Zhang Ying Tianjin Academy of Environmental Sciences College of Life Sciences Tianjin Key Laboratory of Animal and Plant ResistanceTianjin Normal University

[Objective]This paper was to research the water purification mechanism of Ipomoea aquatica and its correlation with algae and rotifer. [Methods]Taking I. aquatica as the test material,Chlorella vulgaris,Scenedesmus obliquus,Microcystis aeroginosa and rotifer Adineta vaga with different densities were added to the hydroponics nutrients solutions of I. aquatica by the hydroponic ecological simulation method. The growth characteristics of I. aquatica,changes of microbial populations and the consumption status of nutrients in the nutritional solution were determined. And the interactions between the plant and the microbial populations were researched. [Results]When I. aquatica seedlings grew to a certain stage,growth of principal root stopped; while the lateral roots emerged greatly; and the nutrition absorption efficiency enhanced. As the inoculation concentration of C. vulgaris increased,root length of I. aquatica increased relatively great due to the competition for nutrients. The competition and allelopathy of M. aeroginosa and S. obliquus restricted the development of root system of I. aquatica. The grazing pressure of Chlorella vulgaris had little effects on M. aeroginosa,but restricted the rapid growth of S. obliquus. [Conclusions]This research provided data support for the application of fish-shrimp-vegetable aquaculture system.

关键词： Ipomoea aquatica Phytoplankton Rotifer Hydroponics Growth characteristics

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Long-term outcomes following exclusive use of endovascular aortic repair for ruptured infrarenal abdominal aortic aneurysms

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Chinese Medical Journal 2023年第15期136卷 1876-1878页

作者： Ruihan Wang Tong Yuan yuanqing kan Jianing Yue Bin Chen Zhihui Dong Daqiao Guo Yi Si Weiguo Fu Department of Vascular Surgery Zhongshan HospitalFudan UniversityShanghai 200032China Vascular Surgery Institute of Fudan University Shanghai 200032China National Clinical Research Center for Interventional Medicine Shanghai 200032China

To the Editor:Ruptured abdominal aortic aneurysm(rAAA)is a fatal *** surgery is the only way to provide an opportunity for *** 1994,endovascular aortic repair(EVAR)was reported as an emergency treatment for *** with traditional open surgery(OS),patients could benefit from its lower perioperative mortality and minimal *** recent guidelines have recommended an EVARfirst approach if suitable as judged by the clinician,the standard of whether to give a priority to EVAR varies among clinicians in practical applications,because hostile aortic morphology and hemodynamic conditions were thought to weaken the benefit of ***,controversies still exist regarding whether EVAR as a priority is applicable to most *** addition,a search of the literature found few population-based studies with long-term *** this,a population-based study was conducted by Zhongshan Hospital,Fudan University.

关键词： aortic aneurysm abdominal

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欧洲血管外科学会2024版《腹主动脉-髂动脉动脉瘤管理临床实践指南》解读

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中国普通外科杂志 2024年第6期33卷 867-875页

作者：阚远晴符伟国复旦大学附属中山医院血管外科/复旦大学血管外科研究所/国家放射与治疗临床医学研究中心上海200032

欧洲血管外科学会发布了2024版《腹主动脉-髂动脉动脉瘤管理临床实践指南》,对腹主动脉瘤和髂动脉病变的诊疗策略进行了全面而详细的介绍。该指南基于截至2023年8月的最佳证据,依据修改后的欧洲心脏病学学会评分系统制定了160条建议,较2... 详细信息

欧洲血管外科学会发布了2024版《腹主动脉-髂动脉动脉瘤管理临床实践指南》,对腹主动脉瘤和髂动脉病变的诊疗策略进行了全面而详细的介绍。该指南基于截至2023年8月的最佳证据,依据修改后的欧洲心脏病学学会评分系统制定了160条建议,较2019年版本新增59项全新建议。新版指南针对质量控制、流行病学与诊断筛查、小型腹主动脉瘤管理、腹主动脉瘤择期修复、破裂及症状性腹主动脉瘤管理、复杂腹主动脉瘤管理等方面的重要内容进行了证据总结与分级推荐。该指南对于指导国内血管外科腹主动脉-髂动脉瘤临床工作具有重大借鉴意义,但同时也需注意结合本土患者的实际情况开展个体化诊疗。本文对指南中相关部分进行了解读,供学者们参考讨论。

关键词：主动脉瘤,腹髂动脉瘤诊疗指南

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Practical approach for detecting k-nonseparability of multipartite quantum states

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Science China(Physics,Mechanics & Astronomy) 2025年第1期Mechanics & Astronomy) .卷 32-48页

作者： Jie Guo Jinchuan Hou Xiaofei Qi kan He College of Mathematics Taiyuan University of Technology School of Mathematics and Statistics Shanxi University Key Laboratory of Complex Systems and Data Science of Ministry of Education Shanxi University

The instantaneous detection of entanglement in quantum states poses a significant challenge in the fields of quantum computation and quantum information, and there are no practical methods or tools to complete this task satisfactorily so far. We propose a sufficient and necessary criterion of k-nonseparability for any n-partite finite or infinite dimensional systems, 2 ≤ k ≤ n. This criterion serves as the foundation for a practical scheme designed to detect entanglement and k-nonseparability across multipartite finite-dimensional systems. To exemplify the application of our scheme, we have developed a software tool that facilitates swift and precise identification of entanglement, k-nonseparability, and genuine entanglement within n-qubit systems, specifically tailored for systems with 2 ≤ n ≤ 4.

关键词： multipartite systems entanglement states entanglement witnesses ${\bm~k}$-nonseparability

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Effects of the extrusion parameters on microstructure,texture and room temperature mechanical properties of extruded Mg-2.49Nd-1.82Gd-0.2Zn-0.2Zr alloy

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 136-146页

作者： Chenjin Zhang Guangyu Yang Lei Xiao Zhiyong kan Jing Guo Qiang Li Wanqi Jie State Key Laboratory of Solidification Processing Northwestern Polytechnical UniversityXi’an 710072China College of Materials Science and Engineering Fuzhou UniversityFuzhou 350108China College of Chemistry and Environmental Science Qujing Normal UniversityQujing 655011China

Microstructure,texture,and mechanical properties of the extruded Mg-2.49Nd-1.82Gd-0.2Zn-0.2Zr alloy were investigated at different extrusion temperatures(260 and 320℃),extrusion ratios(10:1,15:1,and 30:1),and extrusion speeds(3 and 6 mm/s).The experimental results exhibited that the grain sizes after extrusion were much finer than that of the homogenized alloy,and the second phase showed streamline distribution along the extrusion direction(ED).With extrusion temperature increased from 260 to 320℃,the microstructure,texture,and mechanical properties of alloys changed *** dynamic recrystallization(DRX)degree and grain sizes enhanced as the extrusion ratio increased from 10:1 to 30:1,and the strength gradually decreased but elongation(EL)*** the extrusion speed increased from 3 to 6 mm/s,the grain sizes and DRX degree increased significantly,and the samples presented the typical-rare-earth(RE)*** alloy extruded at 260℃ with extrusion ratio of 10:1 and extrusion speed of 3 mm/s showed the tensile yield strength(TYS)of 213 MPa and EL of 30.6%.After quantitatively analyzing the contribution of strengthening mechanisms,it was found that the grain boundary strengthening and dislocation strengthening played major roles among strengthening *** results provide some guidelines for enlarging the industrial application of extruded Mg-RE alloy.

关键词： Mg-rare earth alloys extrusion temperature extrusion ratio extrusion speed strengthening mechanisms

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无机碳对浮游藻类生长和群落结构的影响

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环境污染与防治 2007年第5期29卷 352-356页

作者：孙凌阚元卿张冬梅庄源益南开大学环境科学与工程学院天津300071 天津环境保护科学研究院天津300191

采用水族箱生态模拟方法,利用碳酸钠和碳酸氢钠作为碱度调节剂设置不同碱度水平,研究了氮磷营养相对充足的试验水体中藻类各相关指标对无机碳的响应,并对试验过程中所测得的理化指标和生物指标进行统计分析。研究表明:富营养水体无机碳... 详细信息

采用水族箱生态模拟方法,利用碳酸钠和碳酸氢钠作为碱度调节剂设置不同碱度水平,研究了氮磷营养相对充足的试验水体中藻类各相关指标对无机碳的响应,并对试验过程中所测得的理化指标和生物指标进行统计分析。研究表明:富营养水体无机碳含量与藻类叶绿素水平存在着正相关关系;适当增加水体中的无机碳浓度能够改变蓝、绿藻门种类比例;当碱度水平达到一定程度时,铜绿微囊藻可以逐渐成为优势种,并从体系中上升,演替成为水华。

关键词：碱度无机碳浮游藻类群落结构

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Flexible Strain Sensors with Ultra‑High Sensitivity and Wide Range Enabled by Crack‑Modulated Electrical Pathways

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Nano-Micro Letters 2025年第3期17卷 246-264页

作者： Yunzhao Bai Yunlei Zhou Xuanyu Wu Mengfei Yin Liting Yin Shiyuan Qu Fan Zhang kan Li YongAn Huang State Key Laboratory of Intelligent Manufacturing Equipment and Technology Huazhong University of Science and TechnologyWuhan 430074People’s Republic of China Flexible Electronics Research Center Huazhong University of Science and TechnologyWuhan 430074People’s Republic of China Hangzhou Institute of Technology Xidian UniversityHangzhou 311200People’s Republic of China School of Mechano‑Electronic Engineering Xidian UniversityXi’an 710071People’s Republic of China Department of Aerospace and Mechanical Engineering University of Southern CaliforniaLos AngelesCA 90089USA

This study presents a breakthrough in flexible strain sensor technology with the development of an ultrahigh sensitivity and wide-range sensor,addressing the critical challenge of reconciling sensitivity with measurement *** by the structure of bamboo slips,we introduce a novel approach that utilises liquid metal to modulate the electrical pathways within a cracked platinum fabric *** resulting sensor demonstrates a gauge factor greater than 108 and a strain measurement capability exceeding 100%.The integration of patterned liquid metal enables customisable tuning of the sensor’s response,while the porous fabric structure ensures superior comfort and air permeability for the *** design not only optimises the sensor’s performance but also enhances the electrical stability that is essential for practical *** systematic investigation,we reveal the intrinsic mechanisms governing the sensor’s response,offering valuable insights for the design of wearable strain *** sensor’s exceptional performance across a spectrum of applications,from micro-strain to large-strain detection,highlights its potential for a wide range of real-world uses,demonstrating a significant advancement in the field of flexible electronics.

关键词： Flexible strain sensor Fabric Crack Response regulation Epidermal device

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