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Materials Futures 2024年第1期3卷 165-180页

作者： Jonathan Ruiz Esquius Alec P LaGrow haiyan jin Zhipeng Yu Ana Araujo Rita Marques Adélio Mendes Lifeng Liu Clean Energy Cluster International Iberian Nanotechnology LaboratoryAv.Mestre JoséVeigaBraga 4715-330Portugal Carbon Science and Technology Institute INCAR-CSICFrancisco Pintado Fe 26Oviedo 33011Spain Scientific Imaging Section Okinawa Institute of Science and Technology Graduate UniversityKunigami-gunOkinawa 904-0412Japan Songshan Lake Materials Laboratory Dongguan 523808People’s Republic of China Laboratory for Process Engineering EnvironmentBiotechnology and EnergyFaculty of EngineeringUniversity of PortoRua Dr Roberto FriasPorto 4200-465Portugal Associate Laboratory in Chemical Engineering Faculty of EngineeringUniversity of PortoRua Dr Roberto FriasPorto 4200-465Portugal.

Proton exchange membrane(PEM)water electrolysis represents a promising technology for green hydrogen production,but its widespread deployment is greatly hindered by the indispensable usage of platinum group metal catalysts,especially iridium(Ir)based materials for the energy-demanding oxygen evolution reaction(OER).Herein,we report a new sequential precipitation approach to the synthesis of mixed Ir-nickel(Ni)oxy-hydroxide supported on antimony-doped tin oxide(ATO)nanoparticles(IrNiyO_(x)/ATO,20 wt.%(Ir+Ni),y=0,1,2,and 3),aiming to reduce the utilisation of scarce and precious Ir while maintaining its good acidic OER performance.When tested in strongly acidic electrolyte(0.1 M HClO_(4)),the optimised IrNi1Ox/ATO shows a mass activity of 1.0 mAµgIr^(−1) and a large turnover frequency of 123 s^(−1) at an overpotential of 350 mV,as well as a comparatively small Tafel slope of 50 mV dec^(−1),better than the IrOx/ATO control,particularly with a markedly reduced Ir loading of only 19.7µgIr cm^(−2).Importantly,IrNi1O_(x)/ATO also exhibits substantially better catalytic stability than other reference catalysts,able to continuously catalyse acidic OER at 10 mA cm^(−2) for 15 h without obvious degradation.Our in-situ synchrotron-based x-ray absorption spectroscopy confirmed that the Ir^(3+)/Ir^(4+)species are the active sites for the acidic OER.Furthermore,the performance of IrNi1Ox/ATO was also preliminarily evaluated in a membrane electrode assembly,which shows better activity and stability than other reference catalysts.The IrNi1Ox/ATO reported in this work is a promising alternative to commercial IrO_(2) based catalysts for PEM electrolysis.

关键词： mixed oxides oxygen evolution reaction polymer electrolyte membrane antimony doped tin oxide membrane electrode assembly

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Application of an optical nitrate profiler to high-and low-turbidity coastal shelf waters

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Acta Oceanologica Sinica 2023年第1期42卷 103-108页

作者： Yanpei Zhuang Yangjie Li Xizhen Liu Shichao Tian Bin Wang Zhongqiang Ji haiyan jin Jianfang Chen Polar and Marine Research Institute Jimei UniversityXiamen361000China Key Laboratory of Marine Ecosystem Dynamics Second Institute of OceanographyMinistry of Natural ResourcesHangzhou310012China Marine Monitoring and Forecasting Center of Zhejiang Province Hangzhou310000China Institute for Geology University of HamburgHamburg20000Germany State Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of OceanographyMinistry of Natural ResourcesHangzhou310012China

Here,we report the results of high-resolution nitrate measurements using an optical nitrate profiler(in situ ultraviolet spectrophotometer,ISUS)along transect across a high-turbidity shelf(East China Sea)and a low-turbidity shelf(Chukchi Sea).The ISUS-measured nitrate concentrations closely reproduced the results measured by conventional bottle methods in low-turbidity waters.However,for high-turbidity waters of the East China Sea(salinity<30),a correction factor of 1.19 was required to match the standard bottle measurements.The high-resolution ISUS data revealed subtle spatial variability(e.g.,a subsurface nitrate minimum)that may have been missed if based solely on bottle results.Four main structures of the nitracline on the East China Sea are apparent from the ISUS nitrate profile.High-resolution nitrate data are important for studying nitrate budgets and nutrient dynamics on continental shelves.

关键词： high-resolution nitrate measurements in situ ultraviolet spectrophotometer(ISUS) nutrient dynamics nitracline East China Sea Chukchi Sea

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Overlooked contribution of the biological pump to the Pacific Arctic nitrogen deficit

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Science China Earth Sciences 2022年第8期65卷 1477-1489页

作者： Hongliang LI Jianfang CHEN Diana RUIZ-PINO jingjing ZHANG haiyan jin Yanpei ZHUANG Youcheng BAI Jian REN Yangjie LI Key Laboratory of Marine Ecosystem Dynamics Second Institute of OceanographyMinistry of Natural ResourcesHangzhou310012China State Key Laboratory of Satellite Ocean Environment Dynamics Hangzhou310012China Sorbonne Universités(UPMC UniversitéParis 06)-CNRS-IRD-MNHNLOCEAN Laboratory4 Place JussieuParisF-75005France Southern Marine Science and Engineering Guangdong Laboratory(Zhuhai) Zhuhai519080China Polar and Marine Research Institute Jimei UniversityXiamen361021China

The nutrient-rich Pacific Ocean seawater that flows through the Bering Strait into the Chukchi Sea is generally considered to be the most important source of nutrients to the Arctic euphotic zone.The inflow is characterized by nitrogen deficit and low nitrate/phosphate(N/P)ratios;this is ascribed to sedimentary denitrification on the Chukchi shelf by preoccupant opinions.However,the Chukchi Sea also has high primary production,which raises the question of whether the biological pump may also significantly modulate nutrient properties of the throughflow.Here,we show that nitrate concentrations of the Pacific inflow gradually decrease northward in association with notable biological utilization.The phytoplankton N/P uptake ratio was 8.8±2.27,higher than the N/P ratio of Pacific inflow water(5-6).This uptake ratio,in combination with efficient vertical nitrogen export,serves to preferentially remove nitrogen(relative to phosphorus)from upper waters,thereby further intensifying the Arctic nitrogen deficit.Accordingly,as large as about 111.7×10^(9)mol N yr^(−1)of nitrate was extra consumed,according to the real N/P uptake ratio rather than the ratio of the Pacific inflow,which may be as great as half the nitrogen loss ascribed to sedimentary denitrification.Our findings suggest that besides sedimentary denitrification,biological disproportionate utilization of nutrients in the Chukchi Sea upper water is another important contributor to the nitrogen limitation and excess phosphorus in the upper Arctic Ocean.In the rapid Arctic change era,the predicted reinforced biological carbon pump could further impact the nutrient dynamics and biogeochemical process of the Arctic Ocean.

关键词： Nitrogen deficit Biological pump Nutrient Sinking particles Arctic Ocean

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B7-H3 confers stemness characteristics to gastric cancer cells by promoting glutathione metabolism through AKT/pAKT/Nrf2 pathway

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Chinese Medical Journal 2023年第16期136卷 1977-1989页

作者： Lu Xia Yuqi Chen Juntao Li Jiayu Wang Kanger Shen Anjing Zhao haiyan jin Guangbo Zhang Qinhua Xi Suhua Xia Tongguo Shi Rui Li Jiangsu Institute of Clinical Immunology The First Affiliated Hospital of Soochow UniversitySuzhouJiangsu 215000China Department of Gastroenterology The First Affiliated Hospital of Soochow UniversitySuzhouJiangsu 215000China Jiangsu Key Laboratory of Clinical Immunology Soochow UniversitySuzhouJiangsu 215000China Jiangsu Key Laboratory of Gastrointestinal Tumor Immunology The First Affiliated Hospital of Soochow UniversitySuzhouJiangsu 215000China Department of Oncology The First Affiliated Hospital of Naval Military Medical UniversityShanghai 200433China Department of Oncology The First Affiliated Hospital of Soochow UniversitySuzhouJiangsu 215000China

Background:Cancer stem-like cells(CSCs)are a small subset of cells in tumors that exhibit self-renewal and differentiation properties.CSCs play a vital role in tumor formation,progression,relapse,and therapeutic resistance.B7-H3,an immunoregulatory protein,has many protumor functions.However,little is known about the mechanism underlying the role of B7-H3 in regulating gastric cancer(GC)stemness.Our study aimed to explore the impacts of B7-H3 on GC stemness and its underlying mechanism.Methods:GC stemness influenced by B7-H3 was detected both in vitro and in vivo.The expression of stemness-related markers was examined by reverse transcription quantitative polymerase chain reaction,Western blotting,and flow cytometry.Sphere formation assay was used to detect the sphere-forming ability.The underlying regulatory mechanism of B7-H3 on the stemness of GC was investigated by mass spectrometry and subsequent validation experiments.The signaling pathway(Protein kinase B[Akt]/Nuclear factor erythroid 2-related factor 2[Nrf2]pathway)of B7-H3 on the regulation of glutathione(GSH)metabolism was examined by Western blotting assay.Multi-color immunohistochemistry(mIHC)was used to detect the expression of B7-H3,cluster of differentiation 44(CD44),and Nrf2 on human GC tissues.Student’s t-test was used to compare the difference between two groups.Pearson correlation analysis was used to analyze the relationship between two molecules.The Kaplan-Meier method was used for survival analysis.Results:B7-H3 knockdown suppressed the stemness of GC cells both in vitro and in vivo.Mass spectrometric analysis showed the downregulation of GSH metabolism in short hairpin B7-H3 GC cells,which was further confirmed by the experimental results.Meanwhile,stemness characteristics in B7-H3 overexpressing cells were suppressed after the inhibition of GSH metabolism.Furthermore,Western blotting suggested that B7-H3-induced activation of GSH metabolism occurred through the AKT/Nrf2 pathway,and inhibition of AKT signaling pathway could suppress not onl

关键词： B7-H3 Cancer stem-like cells Glutathione Protein kinase B Nuclear factor erythroid 2-related factor 2 Gastric cancer

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Sources and distribution of sedimentary organic matter along the northern Bering and Chukchi Seas

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Journal of Environmental Sciences 2017年第2期29卷 66-75页

作者： Fanglu Xu haiyan jin Zhongqiang Ji Jianfang Chen Pei Sun Loh Institute of Marine Chemistry and Environment Department of Marine Sciences Ocean College Zhejiang University Laboratory of Marine Ecosystem and Biogeochemistry Second Institute of OceanographyThe State Oceanic Administration

In this study, lignin-derived phenols were used to determine the sources and distribution of sedimentary organic matter along the northern Bering Sea and Chukchi Sea of the Arctic Ocean. The lignin parameter syringyl/vanillyl（S/V） and cinnamyl/vanillyl（C/V） ratios are used to indicate vegetation sources; and the ratios of vanillic acid/vanillin,（Ad/Al）v and syringic acid/syringaldehyde,（Ad/Al）s are used as indicators of lignin diagenesis. Results showed the predominance of woody gymnosperm signal at the easternmost location in the northern Bering Sea, a mixture of refractory non-woody angiosperm and fresher gymnosperm tissues in the Chukchi Sea, and signal of fresher woody gymnosperm tissues in the northernmost locations in the Chukchi Sea. The lignin materials showed gradual increase in decomposition stage during transport along the northern Bering Sea. Hydrodynamic sorting process, which is the retention of coarser materials nearshore and transportation of finer particles farther offshore, most probably occurred along the east coast of the northern Bering Sea. In Chukchi Sea, the non-woody angiosperm tissues could have originated from the Canadian Arctic and gymnosperm tissues could be from the Russian Arctic side. The fresher materials in the northernmost Chukchi Sea could have been transported here via the ice-rafting process.Detection of fresh lignin materials and the occurrence of lignin decomposition mean that this region could be sensitive to the impact of climate change.

关键词： Lignin-derived phenols Northern Bering Sea Chukchi Sea

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Sources and degradation of organic matter in the surface sediments of the Chukchi Sea:insights from amino acids

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Acta Oceanologica Sinica 2023年第11期42卷 9-18页

作者： Weiwei Li Zhongqiao Li Zhuoyi Zhu Alexander Polukhin Youcheng Bai Yang Zhang Futao Fang haiyan jin Anatolii S.Astakhov Xuefa Shi Jianfang Chen Key Laboratory of Marine Ecosystem and Biogechemistry Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China Shanghai Key Laboratory of Polar Life and Environment Sciences School of OceanographyShanghai Jiao Tong UniversityShanghai 200240China Key Laboratory for Polar Science of Ministry of Natural Resources Polar Research Institute of ChinaShanghai 201209China Laboratory of Biohydrochemistry Shirshov Institute of OceanologyRussian Academy of SciencesMoscow 117997Russia State Key Laboratory of Estuarine and Coastal Research East China Normal UniversityShanghai 200241China V.I.Il’ichev Pacific Oceanological Institute Far Eastern BranchRussian Academy of SciencesVladivostok 690012Russia Key Laboratory of Marine Geology and Metallogeny First Institute of OceanographyMinistry of Natural ResourcesQingdao 266061China State Key Laboratory of Satellite Ocean Environment Dynamics Second Institute of OceanographyMinistry of Natural ResourcesHangzhou 310012China

In the context of global warming and rapid environment change in the Arctic,the supply of organic matter(OM)has increased significantly and a large amount of OM are buried on the Arctic shelf.Studying the fate of OM in Arctic shelf sediments is crucial to understanding the global carbon sink.As a marginal sea of the Arctic Ocean,the Chukchi Sea is one of the most critical areas where OM is buried.Based on the surface sediment samples collected during the sixth Chinese National Arctic Research Expedition in the summer of 2014 and the SinoRussian joint Arctic Research Expedition in the summer of 2016,this study takes amino acids(AAs)as the primary tool to explore the source and degradation of OM in the surface sediments of the Chukchi Sea.This study shows that total hydrolyzable amino acid(THAA)concentrations(dry weight)are high,with a mean value of(32.7±15.8)μmol/g.Their spatial distribution is related to primary productivity,hydrodynamic conditions,sediment properties and other factors.The source of OM in the surface sediments of the Chukchi Sea is dominated by diatom-dominated marine productivity,with some input from terrestrial sources.Bacteria,as the main source of the D-enantiomer of AA(D-AA),not only have transforming effect on OM,but their cell walls and remnants likewise supply the OM pool.Based on a series of diagenetic indicators,we conclude that the OM in the surface sediments of the Chukchi Sea has undergone extensive degradation[DI(degradation index)=-0.59±0.44],and the degradation degree in the slope is higher than that in the shelf.This study uses AA to explore the sources and degradation of OM in the sediments of the Chukchi Sea,which facilitates our understanding of OM transport and transformation on the Arctic shelf.

关键词： Chukchi Sea amino acids degradation indicator organic matter

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Discovery of the marine Eocene in the northern South China Sea

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National Science Review 2019年第5期6卷 881-886页

作者： Zhimin Jian haiyan jin Michael A Kaminski Fabricio Ferreira Baohua Li Pai-Sen Yu State Key Laboratory of Marine Geology Tongji University Geosciences Department King Fahd University of Petroleum and Minerals Institute for Geosciences Universidade Federal Fluminense Nanjing Institute of Geology and Paleontology Chinese Academy of Sciences Applied Research Laboratories(NARLabs) Taiwan Ocean Research Institute(TORI)

The nature of the Eocene stratigraphy of the South China Sea (SCS) has been a mystery for decades.In the southern SCS, the Eocene system with marine deposits is often considered as representing part of the ‘Proto-Sou... 详细信息

关键词： SCS Sr Discovery of the marine Eocene in the northern South China Sea China

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Influencing factors and control measures of excavation on adjacent bridge foundation based on analytic hierarchy process and finite element method

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Frontiers of Structural and Civil Engineering 2021年第2期15卷 461-477页

作者： Shuangxi FENG Huayang LEI Yongfeng WAN haiyan jin Jun HAN Department of Civil Engineering Tianjin UniversityTianjin 300354China Coast Civil Structure Safety of Education Ministry Tianjin UniversityTianjin 300354China Key Laboratory of Comprehensive Simulation of Engineering Earthquake and Urban-rural Seismic Resilience CEATianjin 300354China China Railway 16th Bureau Group the 5th Engineering Co. LTDTangshan 064000China

Many uncertain factors in the excavation process may lead to excessive lateral displacement or overlimited internal force of the piles,as well as inordinate settlement of soil surrounding the existing bridge foundation.Safety control is pivotal to ensuring the safety of adjacent structures.In this paper,an innovative method is proposed that combines an analytic hierarchy process(AHP)with a finite element method(FEM)to reveal the potential impact risk of uncertain factors on the surrounding environment.The AHP was adopted to determine key influencing factors based on the weight of each influencing factor.The FEM was used to quantify the impact of the key influencing factors on the surrounding environment.In terms of the AHP,the index system of uncertain factors was established based on an engineering investigation.A matrix comparing the lower index layer to the upper index layer,and the weight of each influencing factor,were calculated.It was found that the excavation depth and the distance between the foundation pit and the bridge foundation were fundamental factors.For the FEM,the FE baseline model was calibrated based on the case of no bridge surrounding the foundation pit.The consistency between the monitoring data and the numerical simulation data for a ground settlement was analyzed.FE simulations were then conducted to quantitatively analyze the degree of influence of the key influencing factors on the bridge foundation.Furthermore,the lateral displacement of the bridge pile foundation,the internal force of the piles,and the settlement of the soil surrounding the pile foundation were emphatically analyzed.The most hazardous construction condition was also determined.Finally,two safety control measures for increasing the numbers of support levels and the rooted depths of the enclosure structure were suggested.A novel method for combining AHP with FEM can be used to determine the key influencing aspects among many uncertain factors during a construction,which can provide some beneficial references for enginee

关键词： deep foundation pit excavation adjacent bridge foundation influencing factors analytic hierarchy process finite element

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隐特征监督的孪生网络弱光光流估计

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中国图象图形学报 2024年第1期29卷 231-242页

作者：肖照林苏展左逢源金海燕西安理工大学计算机科学与工程学院西安710048 陕西省网络计算与安全技术重点实验室西安710048

目的弱光照条件下成像存在信噪比低、运动模糊等问题,这对光流估计带来了极大挑战。与现有“先增强—再估计”的光流估计方法不同,为了避免在弱光图像增强阶段损失场景的运动信息,提出一种隐特征监督的弱光光流估计孪生网络学习方法。... 详细信息

目的弱光照条件下成像存在信噪比低、运动模糊等问题,这对光流估计带来了极大挑战。与现有“先增强—再估计”的光流估计方法不同,为了避免在弱光图像增强阶段损失场景的运动信息,提出一种隐特征监督的弱光光流估计孪生网络学习方法。方法首先,该方法采用权重共享的孪生网络提取可映射的弱光光流和正常光照光流特征;进而,计算弱光邻帧图像的K近邻相关性卷表,以解决计算4D全对相关性卷表的高时空复杂度问题;在全局运动聚合模块中引入针对二维运动特征的注意力机制,以降低弱光条件下强噪声、运动模糊及低对比度对光流估计的不利影响。最后,提出隐特征监督的光流估计模块,采用正常光照光流特征监督弱光照光流特征的学习,实现高精度的光流估计。结果与3种最新光流估计方法的对比实验表明,在正常光照条件下,本文方法取得了与现有最佳光流估计方法相近的性能。在FCDN(flying chairs dark noise)数据集上,本文方法光流估计性能最优,相较于次优方法端点误差精度提升了0.16;在多亮度光流估计(various brightness optical flow,VBOF)数据集上,本文方法端点误差精度提升了0.08。结论本文采用权重共享的双分支孪生网络,实现了对正常光照和弱光照光流特征的准确编码,并采用监督学习方式实现了高精度的弱光照光流估计。实验结果表明,本文方法在弱光光流估计精度及泛化性方面均具有显著优势。本文代码可在https://***/suzhansz/LLCV-net.git下载。

关键词：光流估计孪生网络相关性卷表全局运动聚合弱光图像增强

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Ketamine induces tau hyperphosphorylation at serine 404 in the hippocampus of neonatal rats

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Neural Regeneration Research 2013年第17期8卷 1590-1596页

作者： haiyan jin Zhiyong Hu Mengjie Dong Yidong Wu Zhirui Zhu Lili Xu Department of Anesthesiology The Children's Hospital School of Medicine Key Laboratory of Reproductive Genetics Ministry of Education Zhejiang University PET Center The First Affiliated Hospital School of Medicine Zhejiang University Department of Central Laboratory The Children's Hospital School of Medicine Key Laboratory of Reproductive Genetics Ministry of Education Zhejiang University Department of Anesthesiology The Second Affiliated Hospital of Zhejiang Chinese Medical University

Male Wistar 7-day-old rats were injected with 40 mg/kg ketamine intraperitoneally, followed by three additional injections of 20 mg/kg ketamine each upon restoration of the righting reflex. Neonatal rats injected with equivalent volumes of saline served as controls. Hippocampal samples were collected at 1,7 or 14 days following administration. Electron microscopy showed that neuronal structure changed noticeably following ketamine treatment. Specifically, microtubular structure became irregular and disorganized. Quantitative real time-PCR revealed that phosphorylated tau mRNA was upregulated after ketamine. Western blot analysis demonstrated that phosphorylated tau levels at serine 396 initially decreased at 1 day after ketamine injection, and then gradually returned to control values. At 14 days after injection, levels of phosphorylated tau were higher in the ketamine group than in the control group. Tau protein phosphorylated at serine 404 significantly increased after ketamine injection and then gradually decreased with time. However, the levels of tau protein at serine 404 were significantly greater in the ketamine group than in the control group until 14 days. The present results indicate that ketamine induces an increase of phosphorylated tau mRNA and excessive phosphorylation of tau protein at serine 404, causing disruption of microtubules in the neonatal rat hippocampus and potentially resulting in damage to hippocampal neurons.

关键词： neural regeneration tau protein ketamine phosophorylation neonatal rats hippocampus neurons anesthetics cognition grants-supported paper neuroregeneration

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