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| 1 | Plasma-assisted fabrication of monolayer phosphorene and its Raman characterization显示文摘 | Wanglin Lu Haiyan Nan Jinhua Hong Yuming Chen Chen Zhu Zheng Liang Xiangyang Ma Zhenhua Ni Chuanhong Jin Ze Zhang | 2014 | Nano Research2014，7，6： | 36 |
| 2 | Discovery of the marine Eocene in the northern South China Sea显示文摘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-South China Sea’[1].In the northern SCS,however,the Eocene is dominated by non-marine sequences of South China origin[2],probably also related to the Proto-SCS[3]. | Zhimin Jian Haiyan Jin Michael A Kaminski Fabricio Ferreira Baohua Li Pai-Sen Yu | 2019 | National Science Review2019，6，5： | 20 |
| 3 | New paleomagnetic results from the Yangzhuang Formation of the Jixian System,North China,and tectonic implications显示文摘A paleomagnetic study was carried out on the Yangzhuang Formation (~1350 Ma) of the Jixian System in the North China Block (NCB). Detailed stepwise thermal demagnetization isolated two components. The soft compo- nent (component A) was interpreted as a remagnetization in the recent geomagnetic field. The hard component (compo- nent B) with higher unblocking-temperatures was carried by hematite. Its site-mean direction is D/I = 77.6°/-24.3° (κ = 5.4, α95 = 18.3°, N = 15 sites) before, and D/I = 72.2°/11.5° (κ = 24.6, α95 = 7.9°) after tilt correction. It passes a fold test (Mesozoic folding) at 99% confidence level and reversal test at 95% confidence level. The corresponding pole locates at 17.3°N, 214.5°E (dp = 4.1°, dm = 8.0°). A best fit of paleo- magnetic poles from the NCB, Baltica, Siberia and the ap- parent polar wander path for Laurentia suggests a long-lived connection between these paleo-continents between ~1800 and 1350 Ma. | WU Huaichun ZHANG Shihong LI Zheng-Xiang LI Haiyan DONG Jin | 2005 | Chinese Science Bulletin2005，50，14： | 16 |
| 4 | Seasonal dynamics of water bloom-forming Microcystis morphospecies and the associated extracellular microcystin concentrations in large,shallow,eutrophic Dianchi Lake显示文摘The increasing occurrence of Microcystis blooms is of great concern to public health and ecosystem due to the potential hepatotoxic microcystins(MCs)produced by these colonial cyanobacteria.In order to interpret the relationships between variations of Microcystis morphospecies and extracellular MC concentrations,the seasonal dynamics of phytoplankton community composition,MC concentrations,and environmental parameters were monitored monthly from August,2009 to July,2010.The results indicated that Microcystis dominated total phytoplankton abundance from May to December(96%–99%of total biovolume),with toxic Microcystis viridis and non-toxic Microcystis wesenbergii dominating after July(constituting 65%–95%of the Microcystis population),followed by M.viridis as the sole dominant species from November to January(49%–93%).Correlation analysis revealed that water temperature and nutrient were the most important variables accounting for the occurrence of M.wesenbergii,while the dominance of M.viridis was related with nitrite and nitrate.The relatively low content of MCs was explained by the association with a large proportion of M.viridis and M.wesenbergii,small colony size of Microcystis populations,and low water temperature,pH and dissolved oxygen.The extracellular MC(mean of 0.5±0.2μg/L)of water samples analyzed by enzyme-linked immunosorbent assay(ELISA)demonstrated the low concentrations of MC in Dianchi Lake which implied the low potential risk for human health in the basin.The survey provides the first whole lake study of the occurrence and seasonal variability of Microcystis population and extracellular MCs that are of particular interest for water quality monitoring and management. | Yanlong Wu Lin Li Nanqin Gan Lingling Zheng Haiyan Ma Kun Shan Jin Liu Bangding Xiao Lirong Song | 2014 | Journal of Environmental Sciences2014，26，9： | 12 |
| 5 | A novel pairing-free certificateless authenticated key agreement protocol with provable security显示文摘 | Haiyan SUN Qiaoyan WEN Hua ZHANG Zhengping JIN | 2013 | Frontiers of Computer Science2013，7，4： | 10 |
| 6 | Variations in paleoproductivity and the environmental implications over the past six decades in the Changjiang Estuary显示文摘Total organic carbon and organic carbon stable isotope, biogenic silica, chlorin were measured from a high resolution sediment core to indicate the variation in paleoproductivity and the environmental implications over the past decades (1942 to 1997) in the Changjiang Estuary. Based on these biomarkers, the shift in the phytoplankton community structure in the past decades was discussed in response to the long-term variations in nutrient concentrations and nutrient ratios. The results showed that the δ 13 C values varied from –26.15‰ to –19.5‰, suggesting the combined organic carbon sources of riverine and marine organisms. Based on the biogenic proxies, paleoproductivity changes were categorized into three stages: low production before 1950; an increase in production with the dominance of diatoms during 1950 to 1980, consistent with increasing of nutrient concentrations; a decrease in production after 1980 when the diatom production decreased while the production of non-silicious phytoplankton increased due to high nutrient inputs, and high N/P and P/Si ratios in the Changjiang Estuary. The sedimentation records also indicated that the riverine organic carbon increased since 1980. | JIN Haiyan CHEN Jianfang WENG Huanxin LI Hongliang ZHANG Weiyan XU Jie BAI Youcheng WANG Kui | 2010 | Acta Oceanologica Sinica2010，29，3： | 8 |
| 7 | Phytoplankton composition and its ecological effect in subsurface cold pool of the northern Bering Sea in summer as revealed by HPLC derived pigment signatures显示文摘CHEMTAX analysis of high-performance liquid chromatography(HPLC) pigment was conducted to study phytoplankton community structure in the northern Bering Sea shelf, where a seasonal subsurface cold pool emerges. The results showed that fucoxanthin(Fuco) and chlorophyll a(Chl a) were the most abundant diagnostic pigments, with the integrated water column values ranging from 141 to 2 160 μg/m2 and 477 to 5 535 μg/m2, respectively. Moreover, a diatom bloom was identified at Sta. BB06 with the standing stock of Fuco up to 9 214 μg/m3. The results of CHEMTAX suggested that the phytoplankton community in the northern Bering Sea shelf was dominated by diatoms and chrysophytes with an average relative contribution to Chl a of 80% and 12%, respectively, followed by chlorophytes, dinoflagellates, and cryptophytes. Diatoms were the absolutely dominant algae in the subsurface cold pool with a relative contribution exceeding 90%, while the contribution of chrysophytes was generally higher in oligotrophic upper water. Additionally, the presence of a cold pool would tend to favor accumulation of diatom biomass and a bloom that occurred beneath the halocline would be beneficial to organic matter sinks, which suggests that a large part of the phytoplankton biomass would settle to the seabed and support a rich benthic biomass. | ZHUANG Yanpei JIN Haiyan LI Hongliang CHEN Jianfang WANG Bin CHEN Fajin BAI Youcheng LU Yong TIAN Shichao | 2014 | Acta Oceanologica Sinica2014，33，6： | 7 |
| 8 | MRS and diffusion tensor image in mild traumatic brain injuries显示文摘Objective:To analyze characters of magnetic resonance spectroscopy(MRS) and diffusion tensor imaging(DTI) in the diagnosis of mild trauma brain injuries(MTBI) in frontal lobe and to compare with conventional magnetic resonance imaging(MRI).Methods:A total of 21 patients were selected,who all aged 12-51 years old and had injury within 24 hours.Computer tomography (CT) and the Glasgow Coma Scale were used to evaluate the degree of injury.All patients were diagnosed as MTBI,and 19 had conventional MRI,MRS and DTI.The major parameters of MRS were Probe-P sequence,TE= 144 or 35 ms,and both single voxel spectrum and chemical shift imging were included.The major parameters of DTI were diffusion directions =15,b value = 1000 s/mm^2. Frational anisotropic(FA) map and average ADC map were obtained to evaluate DTI result. Positive deletion ratio was observed and the imaging changes were compared between injured side and normal side.Results:All 21 patients had CT scan and Glasgow scale.A total of 19 patients had conventional MRI.DTI and MRS.Results of CT and conventional MRI showed no significant abnormality in lobe,and Glasgow scale showed mild type.MRS result showed significant decrease in N-acetyl aspartate(NAA) and NAA/creatine(Cr) in 13 cases(68.4%) (P<0.001),and increase in lactic acid(Lac) in 7 cases(36.8%).FA mapping of the frontal lobe displayed significant changes in 7 cases(36.8%),with 5 out of the 7 cases having increase in FA value.And there was no significant difference in average ADC.Conclusions:MRS and DTI might be more sensible than other methods,such as CT and conventional MRI in diagnosis of MTBI.The particular changes were reduced NAA and increased Lac for MRS.and increased FA values for DTI. | Jing Chen Hu Jin Ying Zhang Qizhou Liang Haiyan Liao Ziyi Guo Xiangjun Han | 2012 | Asian Pacific Journal of Tropical Medicine2012，5，1： | 6 |
| 9 | Composition of algal pigments in surface freshen layer after ice melt in the central Arctic显示文摘Seasonal meltwater input creates a thin freshen layer in surface seawater under ice,which largely shifts the algae assemblages.Our recent observation of photosynthetic pigments in the high Arctic showed that ice bottom and 5m of seawater under ice contained relatively high concentration of fucoxanthin,while chlorophyll b and lutein were the major diagnostic pigments in ice-water interface and 0 m of seawater under ice.Additionally,a notable change of dominant phytoplankton occurred in the top 5 m of seawater under ice,from chlorophytes-dominated at surface to diatoms-dominated at 5 m depth,which might attribute to the sharp salinity gradient(salinity from12.5 to 28.1) in the surface seawater under ice.Our results imply that phytoplankton community in surface layer under ice would become more chlorophytes in the future warming Arctic Ocean. | ZHUANG Yanpei JIN Haiyan GU Fan ZHANG Yang BAI Youcheng JI Zhongqiang LU Yong CHEN lianfang | 2017 | Acta Oceanologica Sinica2017，36，8： | 6 |
| 10 | Variations in organic carbon loading of surface sediments from the shelf to the slope of the Chukchi Sea,Arctic Ocean显示文摘The content of organic carbon(OC) normalized to the specific surface area(SSA) of sediment is widely used to trace variations in OC loading(OC/SSA).This study presents observations of OC/SSA of surface sediments collected in the Chukchi Sea,a typical Arctic marginal sea.Shelf sediments exhibit much higher OC/SSA values than slope sediments in the study area.Compared with OC/SSA values reported from the East Siberian Shelf and Mackenzie River,the slope sediments possess lower OC loading.This abrupt decrease in OC/SSA is mostly related to the lower primary production on slope as well as possible oxidization processes.The results of linear regression analysis between OC and SSA indicate a sedimentary source rock for the OC in the Chukchi Sea sediments.Moreover,shelf sediments with low SSA possess a larger rock OC fraction than slope sediments do.The dataset of the present study enables a more thorough understanding of regional OC cycling in the Chukchi Sea. | LI Zhongqiao WANG Xinyi JIN Haiyan JI Zhongqiang BAI Youcheng CHEN Jianfang | 2017 | Acta Oceanologica Sinica2017，36，8： | 6 |
| 11 | Characterization of a Putative New Semi-Dominant Reduced Height Gene, Rht_NM9, in Wheat(Triticum aestivum L.)显示文摘Plant height is an important agronomic trait in cereal crops, and can affect both plant architecture and grain yield. New dwarfing genes are required for improving the genetic diversity of wheat. In this study, a novel dwarf mutant, NM9, was created by treating seeds of the wheat variety NAU9918 with ethyl methanesulfonate(EMS). NM9 showed obvious phenotypic changes, which were distinct from those caused by other dwarfing genes, especially the reduced plant height, increased effective tiller number, and elongated spike and grain length. The reduced plant height in NM9 was attributable to a semi-dominant dwarfing gene Rht_NM9, which was flanked by two closely linked SNP markers, SNP34 and SNP41, covering an 8.86-Mb region on the chromosome arm 2AS. The results of gibberellic acid(GA) sensitivity evaluation, comparative genomics analysis and allelism test indicated that Rht_NM9 was neither allelic to Rht7 and Rht21 nor homoeoallelic to Rht8, so Rht_NM9 was proposed to be a new dwarfing locus on the homoeologous group 2 chromosomes of wheat. Rht_NM9has a negative effect on plant height and positive effects on effective tiller number and grain size, thus, Rht_NM9 could be used for elucidating the mechanisms underlying plant architecture and grain development. | Yuan Lu Liping Xing Shujuan Xing Ping Hu Chaofan Cui Mingyi Zhang Jin Xiao Haiyan Wang Ruiqi Zhang Xiue Wang Peidu Chen Aizhong Cao | 2015 | Journal of Genetics and Genomics2015，42，12： | 6 |
| 12 | Pertuzumab in combination with trastuzumab and chemotherapy for Chinese patients with HER2-positive metastatic gastric or gastroesophageal junction cancer:a subpopulation analysis of the JACOB trial显示文摘Background:The JACOB trial(NCT01774786)was a double-blinded,placebo-controlled,randomized,multicenter,international,phase III trial evaluating the efficacy and safety of adding pertuzumab to trastuzumab and chemo-therapy in first-line treatment of human epidermal growth factor receptor 2(HER2)-positive metastatic gastric cancer/gastroesophageal junction cancer(GEJC).The aim of this analysis was to investigate efficacy and safety outcomes in the Chinese subpopulation from the JACOB trial.Methods:This post hoc subpopulation analysis included all patients recruited in China's Mainland(n=163;20.9%)between June 2013 and January 2016.The patients were randomly assigned in a 1:1 ratio to receive pertuzumab plus trastuzumab and chemotherapy(pertuzumab group;n=82)or placebo plus trastuzumab and chemotherapy(con-trol group;n=81).Intravenous pertuzumab(840 mg)and trastuzumab(8 mg/kg loading and 6 mg/kg maintenance doses)were given every 3 weeks until disease progression or unacceptable toxicity.Chemotherapy was given as per standard regimens/doses of capecitabine or 5-fluorouracil plus cisplatin.The primary endpoint was overall survival(OS);secondary efficacy endpoints included progression-free survival(PFS),and overall objective response rate(ORR).Results:The median OS was 18.7 months in the pertuzumab group and 16.1 months in the control group(hazard ratio[HR]0.75;95%confidence interval[CI]0.49 to 1.14).The median PFS was 10.5 and 8.6 months in the pertuzumab and control groups,respectively(HR 0.85;95%CI 0.60 to 1.21),and the median ORRs were 68.9%and 55.7%,respectively.The treatment effect in this Chinese subpopulation showed consistency with that in the global ITT population with numerically lower HR for OS and PFS compared with the control group.The safety profiles of the pertuzumab and control groups in this Chinese subpopulation analysis were generally comparable.The most common grade 3-5adverse events were neutropenia,anemia,and leukopenia.However,due to the nature of being a post hoc subgroup analysis,the results presented here are descriptive only and need to be interpreted with caution.Conclusions:OS and PFS were numerically improved by adding pertuzumab to trastuzumab and chemotherapy as first-line treatment in Chinese HER2-positive gastric cancer/GEJC patients,and this regimen demonstrated an acceptable safety profile. | Tianshu Liu Yanru Qin Jin Li Ruihua Xu Jianming Xu Shujun Yang Shukui Qin Yuxian Bai Changping Wu Yixiang Mao Haiyan Wu Yilin Ge Lin Shen | 2019 | Cancer Communications2019，39，1： | 6 |
| 13 | Inorganic Carbon Parameters Responding to Summer Hypoxia Outside the Changjiang Estuary and the Related Implications显示文摘The eutrophication,hypoxia and coastal acidification are attracting more and more attention.In this study,inorganic carbon parameters,including dissolved inorganic carbon (DIC) ,total alkalinity (TA) and calculated partial pressure of CO2 (pCO2) ,obtained from a summer cruise in August,2009,were used to investigate their integrated response to biological processes accompanying the oxygen depletion in the areas off the Changjiang Estuary.According to the observations,the typical hypoxia occurred in the bottom water just outside the Changjiang Estuary with Dissolved Oxygen (DO) lower than 2.00 mg L 1.The biological uptake in the surface water and the decomposition of organic matter in the bottom water were fully coupled with each other.The high concentration of Chl_a (Chl_a=10.9μg L 1) and DO (9.25 mg L 1) ,profoundly decreased DIC concentration (1828μmol kg 1) and elevated pH (8.42) was observed in the surface water.The correspondingly increased DIC and depletion of oxygen were observed in the bottom water.The semi-quantitative analysis proved that the locally-produced phytoplankton,determined by primary productivity,was deposited to the bottom and contributed about 76%of total amount of the organic carbon decomposition in the bottom.However,in the bottom hypoxia (DO=2.05 mg L 1) area observed in the Southern Zhejiang coastal water,the responding patterns of inorganic carbon parameters deviated from the previous one.The expanding of Changjiang Diluted Water (CDW) ,the adding of Hangzhou Bay water (with high DIC concentration) and Coastal Current together modify the DIC background value in this area,and the local degeneration and upwelling process may also help to offset the local DIC removed by net biological uptake in surface water.In addition,when the mixing occurring in autumn,which may break the summer stratification,the excess release of high DIC in the bottom water to the subsurface water could have an important influence on coastal acidification and the CO2uptake capacity in this area. | WANG Bin CHEN Jianfang JIN Haiyan LI Hongliang XU Jie | 2013 | Journal of Ocean University of China2013，12，4： | 6 |
| 14 | Endothelial activation and dysfunction in COVID-19:from basic mechanisms to potential therapeutic approaches显示文摘On 12 March 2020,the outbreak of coronavirus disease 2019(COVID-19)was declared a pandemic by the World Health Organization.As of 4 August 2020,more than 18 million confirmed infections had been reported globally.Most patients have mild symptoms,but some patients develop respiratory failure which is the leading cause of death among COVID-19 patients.Endothelial cells with high levels of angiotensin-converting enzyme 2 expression are major participants and regulators of inflammatory reactions and coagulation.Accumulating evidence suggests that endothelial activation and dysfunction participate in COVID-19 pathogenesis by altering the integrity of vessel barrier,promoting pro-coagulative state,inducing endothelial inflammation,and even mediating leukocyte infiltration.This review describes the proposed cellular and molecular mechanisms of endothelial activation and dysfunction during COVID-19 emphasizing the principal mediators and therapeutic implications. | Yuefei Jin Wangquan Ji Haiyan Yang Shuaiyin Chen Weiguo Zhang Guangcai Duan | 2020 | Signal Transduction and Targeted Therapy2020，5，1： | 6 |
| 15 | Functional identification of the terpene synthase family involved in diterpenoid alkaloids biosynthesis in Aconitum carmichaelii显示文摘Aconitum carmichaelii is a high-value medicinal herb widely used across China,Japan,and other Asian countries.Aconitine-type diterpene alkaloids(DAs)are the characteristic compounds in Aconitum.Although six transcriptomes,based on short-read next generation sequencing technology,have been reported from the Aconitum species,the terpene synthase(TPS)corresponding to DAs biosynthesis remains unidentified.We apply a combination of Pacbio isoform sequencing and RNA sequencing to provide a comprehensive view of the A.carmichaelii transcriptome.Nineteen TPSs and five alternative splicing isoforms belonging to TPS-b,TPS-c,and TPS-e/f subfamilies were identified.In vitro enzyme reaction analysis functional identified two sesqui-TPSs and twelve di TPSs.Seven of the TPS-c subfamily genes reacted with GGPP to produce the intermediate ent-copalyl diphosphate.Five Ac KSLs separately reacted with ent-CPP to produce ent-kaurene,ent-atiserene,and ent-13-epi-sandaracopimaradie:a new diterpene found in Aconitum.Ac TPSs gene expression in conjunction DAs content analysis in different tissues validated that ent-CPP is the sole precursor to all DAs biosynthesis,with Ac KSL1,Ac KSL2 s and Ac KSL3-1 responsible for C20 atisine and napelline type DAs biosynthesis,respectively.These data clarified the molecular basis for the C20-DAs biosynthetic pathway in A.carmichaelii and pave the way for further exploration of C19-DAs biosynthesis in the Aconitum species. | Liuying Mao Baolong Jin Lingli Chen Mei Tian Rui Ma Biwei Yin Haiyan Zhang Juan Guo Jinfu Tang Tong Chen Changjiangsheng Lai Guanghong Cui Luqi Huang | 2021 | Acta Pharmaceutica Sinica B2021，11，10： | 6 |
| 16 | nvolvement of collagen-binding heat shock protein 47 in scleroderma-associated fibrosis显示文摘 | Haiyan Chu Ting Wu Wenyu Wu Wenzhen Tu Shuai Jiang Sidi Chen Yanyun Ma Qingmei Liu Xiaodong Zhoua Li Jin Jiucun Wang | 2015 | Protein & Cell2015，6，8： | 5 |
| 17 | Spatiotemporal variations of deep-sea sediment components and their fluxes since the last glaciation in the northern South China Sea显示文摘Sediment components and their fluxes of Cores MD12-3428(water depth: 903 m), MD12-3433(water depth: 2125 m),and MD12-3434(water depth: 2995 m), obtained along a transect on the continental slope of the northern South China Sea, have been conducted to reveal the spatiotemporal variations and the controlling factors of the sediment components and of their fluxes.Results show that deep-sea sediments in the northern South China Sea are composed mainly of terrigenous(59–89%) and carbonate(6–38%) particles, with minor components of opal(1.6–9.4%) and organic matter(0.7–1.9%). Fluxes of terrigenous and carbonate particles reach up to 2.4–21.8 and 0.4–6.5 g cm–2 kyr–1, respectively, values that are one to two orders of magnitude higher than the fluxes of opal and organic matter. Temporal variations of the percentages and fluxes of deep-sea sediment components have displayed clear glacial-interglacial cyclicity since the last glaciation. Terrigenous, opal, and organic matter percentages and their fluxes increas clearly during marine isotope stage 2, while carbonate percentages and fluxes show an opposite variation pattern or are characterized by an unremarkable increase. This implies that deep-sea carbonate in the South China Sea is affected by the dilution of terrigenous inputs during the sea-level lowstand. With increasing water depth along the transect, the terrigenous percentage increases but with largely decreased fluxes. Both the percentage and flux of carbonate decrease, while the percentages and fluxes of opal and organic matter display much more complicated variational features. The spatiotemporal variations of deep-sea sediment components and of their fluxes since the last glaciation in the northern South China Sea are strongly controlled by sea-level fluctuations. Simultaneously, terrigenous supply associated with monsoonal rainfall, marine primary productivity,and the dilution effect between terrigenous and biogenic particles, also play interconnected roles in the sediment accumulation processes. | ZHAO ShaoHua LIU ZhiFei CHEN Quan WANG XingXing SHI JiangNan JIN HaiYan LIU JingJing JIAN ZhiMin | 2017 | Science China Earth Sciences2017，60，7： | 5 |
| 18 | Ketamine induces tau hyperphosphorylation at serine 404 in the hippocampus of neonatal rats显示文摘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. | Haiyan Jin Zhiyong Hu Mengjie Dong Yidong Wu Zhirui Zhu Lili Xu | 2013 | Neural Regeneration Research2013，8，17： | 5 |
| 19 | Influencing factors and control measures of excavation on adjacent bridge foundation based on analytic hierarchy process and finite element method显示文摘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 engineering design and construction. | Shuangxi FENG Huayang LEI Yongfeng WAN Haiyan JIN Jun HAN | 2021 | Frontiers of Structural and Civil Engineering2021，15，2： | 5 |
| 20 | Early diagenetic growth of carbonate concretions in the upper Doushantuo Formation in South China and their significance for the assessment of hydrocarbon source rock显示文摘Mineralogical and textural characteristics and organic carbon composition of the carbonate concretions from the upper Doushantuo Formation (ca. 551 Ma) in the eastern Yangtze Gorge area reveal their early diagenetic (shallow) growth in organic-rich shale. High organic carbon content (up to 10%) and abundance of framboidal pyrites in the hosting shale suggest an anoxic or euxinic depositional environment. Well-preserved cardhouse clay fabrics in the concretions suggest their formation at 0-3 m burial depth, likely associated with microbial decomposition of organic matter and anaerobic oxidation of methane. Gases through decomposition of organic matter and/or from methanogenesis created bubbles and cavities, and anaerobic methane oxidation at the sulfate reduction zone resulted in carbonate precipitation, filling in bubbles and cavities to form spherical structures of the concretions. Rock pyrolysis analyses show that the carbonate concretions have lower total organic carbon (TOC) content but higher effective carbon than those in the host rocks. This may be caused by enclosed organic matter in pores of the concretions so that organic matter was protected from further modification during deep burial and maintained high hydrocarbon generating potential even in over-matured source rock. As a microbialite sensu latu, concretions have special growth conditions and may provide important information on the microbial activities in depositional and early burial environments. | DONG Jin ZHANG ShiHong JIANG GanQing ZHAO QingLe LI HaiYan SHI XiaoYing LIU JunLai | 2008 | Science China Earth Sciences2008，51，9： | 4 |
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