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厦门海域浮游植物夏季赤潮期间分布变异的多元分析

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生态学报 2007年第2期27卷 465-476页

作者：杨清良林更铭国家海洋局第三海洋研究所厦门361005

根据2000年6月至7月夏季藻华期在11个监测站10个航次获取的表层浮游植物和现场测定的理化参数数据，采用多元分析方法揭示浮游植物聚群在污染胁迫下的动态特征。结果表明：（1）该区调查期间浮游植物群落的物种多样性时空变异显著，各... 详细信息

根据2000年6月至7月夏季藻华期在11个监测站10个航次获取的表层浮游植物和现场测定的理化参数数据，采用多元分析方法揭示浮游植物聚群在污染胁迫下的动态特征。结果表明：（1）该区调查期间浮游植物群落的物种多样性时空变异显著，各站多样性指数值（H′）变动在0．45—4．23之间；（2）聚类分析和多维排序（MDS）结果显示，浮游植物聚群可分为3个与浮游植物阶段性演替以及各水域间不同的理化特征相关联的群落。群落Ⅰ系2000年6月赤潮暴发时主要出现于西海域的低盐港湾群落，由微型（nano一）浮游植物组成，包括硅藻门的角毛藻、骨条藻等属种类以及金藻门的单鞭金藻属种类等，如中肋骨条藻（Skeletonema costatum）、聚生角毛藻（Chaetoceros socialis）等和一种单鞭金藻（Chromulina sp．）（未鉴定到种，藻径3～5μm），它们是赤潮原因种。群落Ⅱ和群落Ⅲ都以小型（micro-）浮游植物占优势。群落Ⅱ为赤潮前后广泛出现于调查区各水域的亚热带近岸广布群落，代表种有具槽帕拉藻（Paralia sulcata）、翼鼻状藻（Proboscia alata）、菱形海线藻（Thalassionema nitzschioides）和冰河拟星杆藻（Asterionellopsis glacialis）．群落Ⅲ主要分布于本海区东一东北部，由我国东南沿海常见的近海广布性种类组成，包括旋链角毛藻（Chaetoceros curvisetus）、地中海细柱藻（Leptocylindrus mediterraneus）、尖刺伪菱形藻（Pseudonitzschia pungens）、优美施罗藻（Schroederella delicatula）和斯氏几内亚藻（Guinardia striata）等；（3）丰度-生物量曲线（ABC）分析结果显示，当微藻赤潮出现时，数值丰度的K-优势曲线位于生物量K-优势曲线上方，而无赤潮时2条曲线大体上重叠。其模式可指示厦门海区西部海域污染严重以及东-东北部中度污染的状况；（4）根据各航次全部调查数据所作的PCA分析得到的前3个最主要成分，包括浮游植物丰度和溶解氧，铵氮和磷酸盐，盐度和温度等，大约解析本调查总差异的78．5％。

关键词：浮游植物分布变异赤潮多元分析厦门海区

Protective effects and microarray-based mechanism of sea cucumber hydrolysates against high-glucose induced nephrotoxicity in mouse glomerulus mesangial cells

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未来食品学报(英文) 2024年第3期4卷 233-240页

作者： Lingxin geng Jiaojiao Han Jun Zhou Ye Li Tinghong ming Zhen Zhang Chenyang Lu Xiurong Su State Key Laboratory for Quality and Safety of Argo-products School of Marine ScienceNingbo UniversityNingbo 315211China

Diabetic nephropathy(DN)is a common type of end-stage renal disease and glomerular mesangial cells(GMCs)are widely used as a cell model for *** study firstly investigated the inhibitory effects of the Apostichopus japonicus and Acaudina leucoprocta hydrolysates on cellular growth under high-glucose treatment,better inhibitory effect of *** hydrolysate was observed compared to that of *** ***,the global transcription profiles obtained via microarray analysis showed that 6070 and 7015 genes were identified in the *** and *** groups compared with the model group,*** them,transcriptions of the slc30a4,slc35dl,tppp3,tp53inpl,bcl-2,apafl,alox12b and adrala genes were restored from the levels of the model group to those of the control group,contributed to cell mitosis and proliferation in both treatment *** addition,other apoptosis-related genes,such as bcl-6,clu,foxo3 and akt,showed opposite trends between two groups,which might cause the difference in inhibitory *** preliminarily proposed that the regulation effects of *** and *** on the genes involved in cellular mitosis,proliferation and apoptosis,might contribute to their inhibitory activity on GMCs under high-glucose environment.

关键词： Diabetic nephropathy Apostichopus japonicus Acaudina leucoprocta Hydrolysate Rat mesangial cell Microarray

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《中麓画品》的画史观念与编撰体例研究

艺术百家 2010年第A1期26卷 206-208页

作者：耿明松上海大学数码艺术学院上海201800

作为明代品评体断代绘画史的代表之一,《中麓画品》虽然篇幅较小,但创造了灵活多样的品评体例;全书具有独立的品评标准和品评观念,对明代较多绘画名家进行了褒贬分明的个人评价;各篇论述清晰,语言简练、比喻生动,是一部短小精悍、个性... 详细信息

作为明代品评体断代绘画史的代表之一,《中麓画品》虽然篇幅较小,但创造了灵活多样的品评体例;全书具有独立的品评标准和品评观念,对明代较多绘画名家进行了褒贬分明的个人评价;各篇论述清晰,语言简练、比喻生动,是一部短小精悍、个性独特的画史著作,对今天的美术史学研究具有一定的参考价值。

关键词：中麓画品画史观念体例美术史

Seismic-induced surficial failure of cohesive slopes using three-dimensional limit analysis:A case study of the Wangjiayan landslide in Beichuan, China

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Earthquake Engineering and Engineering Vibration 2024年第3期23卷 537-545页

作者： Gao Yufeng Liu Yang geng Weijuan Zhang Fei Key Laboratory of the Ministry of Education for Geomechanics and Embankment Engineering College of Civil and Transportation EngineeringHohai UniversityNanjing 210098China Department of Civil Engineering Faculty of Civil Engineering and MechanicsJiangsu UniversityZhenjiang 212013China

A seismic-induced landslide is a common geological catastrophe that occurs in *** Wangjiayan landslide,which was triggered by the Wenchuan earthquake,is a typical case in *** Wanjiayan landslide caused many casualties and resulted in enormous property *** study constructs a simple surficial failure model based on the upper bound approach of three-dimensional(3D)limit analysis to evaluate the slope stability of the Wangjiayan case,while a traditional two-dimensional(2D)analysis is also conducted as a reference for comparison with the results of the 3D analysis.A quasi-static calculation is used to study the effect of the earthquake in terms of horizontal ground acceleration,while a parametric study is conducted to evaluate the critical cohesion of *** than employing a 3D analysis,using the 2D analysis yields an underestimation regarding the safety *** the Wangjiayan landslide,the difference in the factors of safety between the 3D and 2D analyses can reach 20%.The sliding surface morphology as determined by the 3D method is similar to actual morphology,and the parameters of both are also compared to analyze the reliability of the proposed 3D method.

关键词： landslide Wenchuan earthquake surficial failure limit analysis stability quasi-static

Microfluidic-oriented synthesis of enriched iridium nanodots/carbon architecture for robust electrocatalytic nitrogen fixation

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Green Energy & Environment 2024年第3期9卷 544-555页

作者： Hengyuan Liu Xingjiang Wu Yuhao geng Xin Li Jianhong Xu The State Key Laboratory of Chemical Engineering Department of Chemical EngineeringTsinghua UniversityBeijing100084China

Electrocatalytic nitrogen reduction reaction(NRR)is considered as a promising candidate to achieve ammonia synthesis because of clean electric energy,moderate reaction condition,safe operating process and harmless ***,the chemical inertness of nitrogen and poor activated capacity on catalyst surface usually produce low ammonia yield and faradic ***,the microfluidic technology is proposed to efficiently fabricate enriched iridium nanodots/carbon *** to in-situ co-precipitation reaction and microfluidic manipulation,the iridium nanodots/carbon nanomaterials possess small average size,uniform dispersion,high conductivity and abundant active sites,producing good proton activation and rapid electrons transmission and moderate adsorption/desorption *** a result,the as-prepared iridium nanodots/carbon nanomaterials realize large ammonia yield of 28.73 μg h^(-1) cm^(-2) and faradic efficiency of 9.14%in KOH ***,the high ammonia yield of 11.21 μg h^(-1) cm^(-2) and faradic efficiency of 24.30%are also achieved in H_(2)SO_(4) *** microfluidic method provides a reference for large-scale fabrication of nano-sized catalyst materials,which may accelerate the progress of electrocatalytic NRR in industrialization field.

关键词： Iridium nanodots Carbon Microfluidic technology Efficient synthesis Electrocatalytic nitrogen fixation

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基于脉冲漏磁暂态特征的缺陷量化评估方法

中国机械工程 2021年第7期32卷 860-866,881页

作者：许鹏方舟王平耿明许勇南京航空航天大学自动化学院南京211106 工业和信息化部高速载运设施的无损检测和监控技术重点实验室南京211106 中铁第四勘察设计院集团有限公司武汉430063

轨头核伤是对铁路行车威胁最大的一种钢轨损伤,因此同时检测出钢轨的表面和近表面埋藏缺陷对保障铁路的安全运行有着重要意义。基于从脉冲漏磁检测信号中提取的暂态特征,研究了轨道缺陷评估新方法,该方法可以同时评估表面和近表面埋藏... 详细信息

轨头核伤是对铁路行车威胁最大的一种钢轨损伤,因此同时检测出钢轨的表面和近表面埋藏缺陷对保障铁路的安全运行有着重要意义。基于从脉冲漏磁检测信号中提取的暂态特征,研究了轨道缺陷评估新方法,该方法可以同时评估表面和近表面埋藏缺陷的深度及埋藏深度。当施加激励较大时,漏磁信号在上升沿存在波动现象。从波动信号中提取两个新的信号特征,建立信号特征与缺陷参数之间的函数关系,并据此对被测缺陷进行了量化评估。使用上述方法对三个新的缺陷进行量化评估,得到的缺陷深度和埋藏深度的评估值与真实值误差均在0.2 mm以内,验证了该评估方法的可行性。

关键词：脉冲漏磁轨道探伤缺陷量化评估特征提取

Molecular mechanism of hepatitis B virus X protein function in hepatocarcinogenesis

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World Journal of Gastroenterology 2015年第38期21卷 10732-10738页

作者： ming geng Xuan Xin Li-Quan Bi Lu-Ting Zhou Xiao-Hong Liu Department of Pathology General Hospital of Jinan Military Command

Many factors are considered to contribute to hepatitis B virus(HBV)-associated hepatocellular carcinoma(HCC),including products of HBV,HBV integration and mutation,and host susceptibility. HBV X protein(HBx) can interfere with several signaling pathways associated with cell proliferation and invasion,and HBx C-terminal truncation has been suggested to impact the development of HCC. This review focuses on the pathological functions of HBx in HBV-induced hepatocarcinogenesis. As a transactivator,HBx can affect regulatory non-coding RNAs(nc RNAs),including micro RNAs and long nc RNAs. HBx is also involved in epigenetic modification and DNA repair. HBx interacts with various signal-transduction pathways,such as the p53,Wnt,and nuclear factor-κB pathways. We conclude that HBx hastens the development of hepatoma.

关键词： Hepatocellular carcinoma Hepatitis B virus Hepatit

传统农区工业化过程中农地产权制度变迁的经济分析

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河南大学学报（社会科学版） 2009年第2期49卷 1-18页

作者：耿明斋河南大学经济学院河南开封475004

经过承包制、租赁制和物权制三阶段改革,农户耕地产权完整性逐渐强化,但产权权能仍然在上层政府及乡、村、组、户等多个主体之间分割持有,其对工业化和社会转型要求的不适应是显而易见的。要通过市场转让实现规模经营,提高农村经济活动... 详细信息

经过承包制、租赁制和物权制三阶段改革,农户耕地产权完整性逐渐强化,但产权权能仍然在上层政府及乡、村、组、户等多个主体之间分割持有,其对工业化和社会转型要求的不适应是显而易见的。要通过市场转让实现规模经营,提高农村经济活动的效率,并使农户真正拥有土地处置权和收益权,促进农业人口向非农产业和城镇流动,就必须推进以农户私有化为基本方向的农地产权制度改革。

关键词：农区工业化农地产权农业效率人口流动农户私有化

Recyclable hydrolyzed polymers of intrinsic microporosity-1/Fe_(3)O_(4) magnetic composites as adsorbents for selective cationic dye adsorption

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Frontiers of Chemical Science and Engineering 2024年第2期18卷 113-125页

作者： Feng Zhang Shuainan Xu Xiumei geng Meixia Shan Yatao Zhang School of Chemical Engineering Zhengzhou UniversityZhengzhou 450001China

Polymers of intrinsic microporosity shows great potential for dye adsorption and magnetic Fe_(3)O_(4) are easy to be *** this work,hydrolyzed polymers of intrinsic microporosity-1/Fe_(3)O_(4) composite adsorbents were prepared by phase inversion and hydrolysis process for cationic dye *** chemical structure and morphology of the composite adsorbents were systematically characterized by several characterization *** methylene blue as the target dye,the influences of solution pH,contact time,initial dye concentration,and system temperature on the methylene blue adsorption process were *** incorporation of Fe_(3)O_(4) particle into hydrolyzed polymers of intrinsic microporosity-1 endow the adsorbent with high magnetic saturation(20.7 emu·g^(–1))which allows the rapid separation of the ***,the adsorption process was simulated by adsorption kinetics,isotherms and thermodynamics to gain insight onto the intrinsic adsorption *** addition,the composite adsorbents are able to selectively adsorb cationic dyes from mixed dyes *** polymers of intrinsic microporosity/Fe_(3)O_(4) shows only a slight decrease for methylene blue adsorption after 10 adsorption/regeneration cycles,demonstrating the outstanding regeneration *** high adsorption capacity,outstanding regeneration ability,together with simple preparation method,endow the composite adsorbents great potential for selective removal of cationic dyes in wastewater system.

关键词： polymers of intrinsic microporosity magnetic adsorbent cationic dye adsorption