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海岸不同生态断带土壤养分空间异质性与植物分布的关系

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鲁东大学学报（自然科学版） 2018年第3期34卷 217-227页

作者：宋玉周瑞莲张婷凤杨润亚鲁东大学生命科学学院山东烟台264039

本文以烟台海岸沙地为试验地,通过对不同生态断带(取样地距高潮线10,30,50 m)植被、土壤水溶性盐分离子(Na^+,K^+,Cl^-,SO_4^(2-))含量、土壤养分(土壤速效P,速效K,速效N,全K,全P)含量、土壤酶(脲酶、蔗糖酶、磷酸酶)活力的分析,以了解... 详细信息

本文以烟台海岸沙地为试验地,通过对不同生态断带(取样地距高潮线10,30,50 m)植被、土壤水溶性盐分离子(Na^+,K^+,Cl^-,SO_4^(2-))含量、土壤养分(土壤速效P,速效K,速效N,全K,全P)含量、土壤酶(脲酶、蔗糖酶、磷酸酶)活力的分析,以了解海岸不同生态断带土壤盐度和养分空间异质性与植物分布的关系和作用机理.结果表明,近高潮线10 m处土壤Na^+,K^+,Cl^-,SO_4^(2-)含量最高,尤其是Na^+和Cl^-分别较远离高潮线30 m和50 m处土壤高9.7,2.7倍和22.3,2.8倍.同时,近高潮线10 m处土壤酶脲酶、蔗糖酶、碱性磷酸酶活力和土壤有效养分含量最低,随远离高潮线土壤酶活力上升、土壤有效养分含量增加.与近高潮线10 m相比,50 m处土壤Na^+和Cl^-含量下降了95.7%,73.7%;土壤有效N,有效K,有效P含量分别升高69.1%,32.7%,6.0%;土壤蔗糖酶、脲酶、磷酸酶活力分别提高204.7%,388.1%,455.1%.而且不同生态断带植物种类不同,10 m处只有抗沙埋耐盐性强的滨麦(Leymus mollis)生长形成单一种群,30 m处出现了抗旱抗盐的以肾叶打碗花(Calystegia soldanella)为优势种的草本植物群落,在50 m处出现了以小灌木刺槐(Robinia pseudoacacia)为优势种的草灌群落.研究表明,由于距海岸高潮线距离和受海水侵蚀强度的不同使不同生态断带土壤酶活力和养分含量随远离高潮线土壤盐度的降低而呈梯度增长趋势,不同生态断带土壤酶活力和养分呈空间异质性分布,其中盐分起主导作用.同时海岸生态环境的异质性是诱发植物种分布不同的生态诱因,而植物对沙埋、盐胁迫、土壤瘠薄的适应生态幅不同可能是诱发其分布不同的生物诱因.因此利用海岸带环境盐度和养分的空间异质性,合理布局和栽种抗逆性不同的植物种类将有助于快速恢复海岸带环境和维持海岸生态系统的稳定.

关键词：盐度土壤酶土壤养分植被分布空间异质性

MXene Hybridized Polymer with Enhanced Electromagnetic Energy Harvest for Sensitized Microwave Actuation and Self‑Powered Motion Sensing

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Nano-Micro Letters 2025年第3期17卷 265-279页

作者： yu‑Ze Wang yu‑Chang Wang Ting‑Ting Liu Quan‑Liang Zhao Chen‑Sha Li Mao‑Sheng Cao School of Materials Science and Engineering Beijing Institute of TechnologyBeijing 100081People’s Republic of China School of Materials Science and Engineering Peking UniversityBeijing 100871People’s Republic of China School of Mechanical and Material Engineering North China University of TechnologyBeijing 100144People’s Republic of China Key Laboratory of Functional Inorganic Material Chemistry Ministry of Education of the People’s Republic of ChinaHeilongjiang UniversityHarbin 150080People’s Republic of China

Polymeric microwave actuators combining tissue-like softness with programmablemicrowave-responsive deformation hold great promise for mobile intelligentdevices and bionic soft robots. However, their application is challenged by restricted electromagneticsensitivity and intricate sensing coupling. In this study, a sensitized polymericmicrowave actuator is fabricated by hybridizing a liquid crystal polymer with Ti3C2Tx(MXene). Compared to the initial counterpart, the hybrid polymer exhibits unique spacechargepolarization and interfacial polarization, resulting in significant improvements of230% in the dielectric loss factor and 830% in the apparent efficiency of electromagneticenergy harvest. The sensitized microwave actuation demonstrates as the shortenedresponse time of nearly 10 s, which is merely 13% of that for the initial shape memory polymer. Moreover, the ultra-low content of MXene (upto 0.15 wt%) benefits for maintaining the actuation potential of the hybrid polymer. An innovative self-powered sensing prototype that combinesdriving and piezoelectric polymers is developed, which generates real-time electric potential feedback (open-circuit potential of ~ 3 mV) duringactuation. The polarization-dominant energy conversion mechanism observed in the MXene-polymer hybrid structure furnishes a new approachfor developing efficient electromagnetic dissipative structures and shows potential for advancing polymeric electromagnetic intelligent devices.

关键词： Microwave absorption Electromagnetic response Energy harvest Self-sensing Soft actuator

我院2004～2012年药品不良反应报告分析

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西北药学杂志 2013年第4期28卷 423-425页

作者：刘江红余瑞莲郭晓霞深圳市龙华新区人民医院药剂科深圳518109

目的对我院药品不良反应(adverse drug reaction,ADR)报告和监测情况进行分析,总结有效的工作模式,进一步提高药品不良反应监测质量。方法对我院2004年1月～2012年12月收到的ADR报告,按ADR报告数量、报告科室、引起药品不良反应的药品... 详细信息

目的对我院药品不良反应(adverse drug reaction,ADR)报告和监测情况进行分析,总结有效的工作模式,进一步提高药品不良反应监测质量。方法对我院2004年1月～2012年12月收到的ADR报告,按ADR报告数量、报告科室、引起药品不良反应的药品种类等进行分析。结果 ADR报告919份,上报科室共25个,涉及药品127种,其中抗菌药物73种(57.48%),居首位;其次是中药注射剂24种(18.90%)。结论临床必须重视药品不良反应;对抗菌药物和中药注射剂应重点进行监测;有效的工作模式对ADR监测工作有推动作用。

关键词：药品不良反应(ADR) 报告合理用药

Endoscopy-assisted lightweight diagnosis system based on transformers for colon polyp detection

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Optoelectronics Letters 2025年第1期21卷 57-64页

作者： FAN Weiming yu Jiahui JU Zhaojie School of Automation and Electrical Engineering Shenyang Ligong University Department of Biomedical Engineering Zhejiang University School of Computing University of Portsmouth

The integration of endoscopy has significantly propelled the diagnosis and treatment of gastrointestinal diseases, with colonoscopy establishing itself as the primary method for early diagnosis and preventive care in colorectal cancer(CRC). Although deep learning holds promise in mitigating missed polyp rates, modern endoscopy examinations pose additional challenges, such as image blurring and atomizing. This study explores lightweight yet powerful attention mechanisms, introducing the spatial-channel transformer(SCT), an innovative approach that leverages spatial channel relationships for attention weight calculation. The method utilizes rotation operations for inter-dimensional dependencies, followed by residual transformation, encoding inter-channel and spatial information with minimal computational overhead. Extensive experiments on the CVC-Clinic DB polyp detection dataset, addressing endoscopy pitfalls, underscore the superiority of our SCT over other state-of-the-art methods. The proposed model maintains high performance, even in challenging scenarios.

关键词： Endoscopy

Targeting TrkB–PSD-95 coupling to mitigate neurological disorders

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Neural Regeneration Research 2025年第3期20卷 715-724页

作者： Xin Yang yu-Wen Alvin Huang John Marshall Department of Molecular Biology Cell Biology and BiochemistryBrown UniversityProvidenceRIUSA Department of Neurology Warren Alpert Medical School of Brown UniversityProvidenceRIUSA Center for Translational Neuroscience Robert J.and Nancy D.Carney Institute for Brain Science and Brown Institute for Translational ScienceBrown UniversityProvidenceRIUSA

Tropomyosin receptor kinase B(TrkB)signaling plays a pivotal role in dendritic growth and dendritic spine formation to promote learning and *** activity-dependent release of brain-derived neurotrophic factor at synapses binds to pre-or postsynaptic TrkB resulting in the strengthening of synapses,reflected by long-term ***,the association of postsynaptic density protein-95 with TrkB enhances phospholipase Cγ-Ca^(2+)/calmodulin-dependent protein kinaseⅡand phosphatidylinositol 3-kinase-mechanistic target of rapamycin signaling required for long-term *** this review,we discuss TrkB-postsynaptic density protein-95 coupling as a promising strategy to magnify brain-derived neurotrophic factor signaling towards the development of novel therapeutics for specific neurological disorders.A reduction of TrkB signaling has been observed in neurodegenerative disorders,such as Alzheimer's disease and Huntington's disease,and enhancement of postsynaptic density protein-95 association with TrkB signaling could mitigate the observed deficiency of neuronal connectivity in schizophrenia and *** with brain-derived neurotrophic factor is problematic,due to poor pharmacokinetics,low brain penetration,and side effects resulting from activation of the p75 neurotrophin receptor or the truncated TrkB.T1 *** TrkB agonists and antibodies that activate TrkB are being intensively investigated,they cannot distinguish the multiple human TrkB splicing isoforms or cell type-specific *** TrkB–postsynaptic density protein-95 coupling provides an alternative approach to specifically boost TrkB signaling at localized synaptic sites versus global stimulation that risks many adverse side effects.

关键词： Angelman syndrome autism brain-derived neurotrophic factor depression neurodegenerative disorder neurodevelopmental disorder postsynaptic density protein-95 synaptic plasticity TrkB

蝉花、蛹虫草和冬虫夏草药材中脂肪酸含量的比较研究

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中国药房 2017年第30期28卷 4252-4256页

作者：卞智慧于瑞莲魏思敏蒋文邵佳蔚喻振许金国吕高虹南京中医药大学药学院南京210023

目的:建立同时测定蝉花、蛹虫草和冬虫夏草药材中脂肪酸含量的方法,并比较上述药材中脂肪酸含量的差异。方法:采用气相色谱-质谱法。色谱条件:色谱柱为TG-5MS毛细管柱,载气为氮气,流速为1.2 mL/min,进样口温度为290℃,不分流进样,开阀... 详细信息

目的:建立同时测定蝉花、蛹虫草和冬虫夏草药材中脂肪酸含量的方法,并比较上述药材中脂肪酸含量的差异。方法:采用气相色谱-质谱法。色谱条件:色谱柱为TG-5MS毛细管柱,载气为氮气,流速为1.2 mL/min,进样口温度为290℃,不分流进样,开阀时间为1 min,进样量为1μL;质谱条件:离子源为电喷雾电离源,离子源温度/传输线温度为280℃,色谱柱初始温度为80℃(程序升温),电离电压为70 eV,溶剂延迟时间为5 min,扫描质量范围为m/z 30~400。结果:十四烷酸、十五烷酸、软脂酸、棕榈油酸、十七碳酸、十七碳烯酸、十八烷酸、油酸甲酯、亚油酸、花生酸、花生一烯酸、花生二烯酸、二十碳三烯酸、二十一碳酸、山萮酸、二十三碳酸、木焦油酸检测质量浓度线性范围分别为1.400~44.520μg/mL(r=0.999 8)、2.091~93.721μg/mL(r=0.999 7)、3.146~85.856μg/mL(r=0.998 2)、1.664~61.444μg/mL(r=0.998 7)、1.773~64.983μg/mL(r=0.999 5)、1.781~68.421μg/mL(r=0.999 7)、1.706~55.606μg/mL(r=0.999 8)、1.439~47.989μg/mL(r=0.999 6)、1.738~66.908μg/mL(r=0.999 6)、2.086~94.206μg/mL(r=0.999 5)、1.356~44.966μg/mL(r=0.999 4)、1.444~56.814μg/mL(r=0.999 7)、1.375~52.335μg/mL(r=0.999 8)、1.512~60.312μg/mL(r=0.999 5)、1.450~59.760μg/mL(r=0.999 7)、1.427~58.757μg/mL(r=0.999 1)、1.269~58.109μg/mL(r=0.999 3);定量限≤1 764.71 ng/mL,检测限≤529.42 ng/mL;精密度、稳定性、重复性试验的RSD<2.0%;加样回收率为84.87%~108.93%(RSD为0.19%~2.23%,n=6)。蝉花、蛹虫草和冬虫夏草药材中分别含有17、16、16种脂肪酸,上述药材中不饱和脂肪酸含量均高于饱和脂肪酸含量;其中人工栽培蝉花药材样品中各种脂肪酸含量大多高于其他药材样品。结论:该方法操作简单,精密度、稳定性、重复性较好,可用于蝉花、蛹虫草和冬虫夏草药材中脂肪酸含量的同时测定;从脂肪酸含量角度讲,上述3种药材中人工栽培蝉花药材品质较优。

关键词：蝉花蛹虫草冬虫夏草脂肪酸气相色谱-质谱法

Correlation between the rock mass properties and maximum horizontal stress:A case study of overcoring stress measurements

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International Journal of Minerals,Metallurgy and Materials 2025年第1期32卷 39-48页

作者： Peng Li Meifeng Cai Shengjun Miao yuan Li yu Wang Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mines University of Science and Technology BeijingBeijing 100083China State Key Laboratory of Coal Resources and Safe Mining China University of Mining and TechnologyXuzhou 221116China

Understanding the mechanical properties of the lithologies is crucial to accurately determine the horizontal stress *** investigate the correlation between the rock mass properties and maximum horizontal stress,the three-dimensional(3D)stress tensors at 89 measuring points determined using an improved overcoring technique in nine mines in China were adopted,a newly defined characteristic parameter C_(ERP)was proposed as an indicator for evaluating the structural properties of rock masses,and a fuzzy relation matrix was established using the information distribution *** results indicate that both the vertical stress and horizontal stress exhibit a good linear growth relationship with *** is no remarkable correlation between the elastic modulus,Poisson's ratio and depth,and the distribution of data points is scattered and ***,there is no obvious relationship between the rock quality designation(RQD)and *** maximum horizontal stress σ_(H) is a function of rock properties,showing a certain linear relationship with the C_(ERP)at the same *** addition,the overall change trend of σ_(H) determined by the established fuzzy identification method is to increase with the increase of C_(ERP).The fuzzy identification method also demonstrates a relatively detailed local relationship betweenσ_H and C_(ERP),and the predicted curve rises in a fluctuating way,which is in accord well with the measured stress data.

关键词： overcoring stress measurements elastic modulus Poisson's ratio rock quality designation maximum horizontal stress fuzzy identification

六盘水工业区表层土壤的重金属污染及其潜在生态风险评价

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贵州农业科学 2014年第7期42卷 188-192页

作者：胡江良胡恭任于瑞莲温先华何海星苏光明六盘水师范学院化学与化学工程系贵州六盘水553001 华侨大学环境科学与工程系福建厦门361021

为探明六盘水市主要工业区表层（0～10 cm）土壤的重金属污染状况，采用 Muller地累积指数法和潜在生态风险指数法，对其主要工业区的土壤重金属Pb、Cu、Ni、Cr、Co、Zn、Mn、V和 Ti的污染状况及潜在生态风险进行了评价。结果表明：重金... 详细信息

为探明六盘水市主要工业区表层（0～10 cm）土壤的重金属污染状况，采用 Muller地累积指数法和潜在生态风险指数法，对其主要工业区的土壤重金属Pb、Cu、Ni、Cr、Co、Zn、Mn、V和 Ti的污染状况及潜在生态风险进行了评价。结果表明：重金属 Pb、Zn、Cu、Mn、V、Cr、Ti、Co 和 Ni 平均含量分别为360．4 mg/kg、364．9 mg/kg、115．7 mg/kg、1758 mg/kg、302．0 mg/kg、207．1 mg/kg、10653 mg/kg、31．9 mg/kg和45．9 mg/kg。9种重金属元素含量平均值均高于土壤背景值，为土壤背景值的1．17～10．24倍。9种重金属元素的污染程度依次为Pb＞Zn＞Cu＞Mn＞V＞Cr＞Ti＞Co＞Ni，Pb为中度-重污染程度， Zn和Cu属中度污染强度，Cr、Co、Ti、Mn和V属于轻微污染，Ni属于基本无污染。9种重金属元素的生态危害依次为Pb＞Cu＞Ni＞Co＞V＞Cr＞Zn＞Mn＞Ti，Pb的生态危害最大，生态风险参数值达51．20；各采样点综合污染指数（Cd）值为12．35～71．88，平均27．96，工业区表层土壤重金属整体上属于重污染。

关键词：工业区重金属土壤污染潜在生态风险六盘水贵州

漳州大气PM_(2.5)污染特征与区域传输影响分析

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地球与环境 2021年第2期49卷 134-146页

作者：但扬彬胡恭任卞雅慧陈衍婷陈进生王珊珊于瑞莲华侨大学化工学院福建厦门361021 中国科学院城市环境研究所福建厦门361021

利用多点位三维受体模型与后向轨迹模型,研究了漳州市近海与城区两个代表性点位不同季节不同来向气团所载带的PM_(2.5)浓度、化学组分及污染源贡献特征。结果表明:近海与城区两点位PM_(2.5)质量浓度在季节变化上均为夏季低,冬季高(近海... 详细信息

利用多点位三维受体模型与后向轨迹模型,研究了漳州市近海与城区两个代表性点位不同季节不同来向气团所载带的PM_(2.5)浓度、化学组分及污染源贡献特征。结果表明:近海与城区两点位PM_(2.5)质量浓度在季节变化上均为夏季低,冬季高(近海点位夏季37.3μg/m^(3),冬季52.1μg/m^(3);城区点位夏季38.5μg/m^(3),冬季86.2μg/m^(3));总体而言,近海点位主要受本地气团以及江苏-浙江来向气团影响,城区点位主要受广东省及其近海来向气团影响。在PM_(2.5)化学组成上,近海点位二次无机组分SO42-、NO3-、NH4+均高于城区点位,而城区点位秋季二次有机污染明显高于近海点位。因受河口地形影响,近海点位冬季PM_(2.5)各化学组分均高于城区点位。两点位源解析结果存在季节性差异。在近海点位,春冬季二次无机源贡献最大,夏秋季二次有机源贡献最大;在城区点位,春季建筑尘、夏季二次有机源、秋季地壳尘、冬季二次无机源占比最大。不同来向气团对两点位四季PM_(2.5)分担率分别为:近海点位春季NNE来向的二次无机源(20.5%)、夏季SW来向的二次有机源(14.3%)、秋季NNE来向的二次有机源(10.0%)、冬季NE来向的二次无机源(24.2%);城区点位春季NNE来向的建筑尘(18.0%)、夏季WSW来向的二次有机源(15.9%)、秋季NNE来向的地壳尘(15.4%)、冬季NNE来向的二次无机源(24.3%)。

关键词：多点位三维受体模型后向轨迹 PM_(2.5) 化学组分来源贡献