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Benthic microbial biogeography along the continental shelf shaped by substrates from the Changjiang River plume

Acta Oceanologica Sinica 2022年第1期41卷 118-131页

作者： Yongjun Wei Shan Jiang Lingmin Tian Liping Wei jie jin Juan Severino Pino Ibanhez Yan Chang Xiaodao Wei Ying Wu Key Laboratory of Advanced Drug Preparation Technologies of Ministry of Education School of Pharmaceutical SciencesZhengzhou UniversityZhengzhou 450001China State Key Laboratory of Estuarine and Coastal Research East China Normal UniversityShanghai 200241China Department of Food Science and Engineering Jinan UniversityGuangzhou 510632China Key Laboratory of Vegetation Restoration and Management of Degraded Ecosystems South China Botanical GardenChinese Academy of SciencesGuangzhou 510650China School of Natural Sciences Trinity College DublinDublin 2Ireland Instituto de Investigacions Marinas Consejo Superior de Investigaciones CientificasVigo 36208Spain Institute of Eco-Chongming East China Normal UniversityShanghai 202162China

Coastal zones are active reactors of continental material including that transported by rivers via a series of microbiota-mediated reactions. Nevertheless, current knowledge of the ecology and functioning of the microbiota in coastal areas affected by large riverine inputs remains insufficient on a global scale. Here, an investigation on sediment microbial composition, including taxonomy and metabolic network, as well as their relationship with major benthic reaction substrates, namely carbon, nitrogen, sulphur and phosphorus, was conducted in the continental shelf affected by the spread of the Changjiang River plume. Surface sediment samples(48 samples)were collected during March 2018, obtaining a mean Operational Taxonomic Units(OTUs) number of 3 ***, Acidobacteria and Actinobacteria were abundant phyla in the studied sediments. Bray-Curtis distance analysis classified the 48 samples into 4 clusters(MG1 to MG4) at the phylum-level. MG1 and MG2 are found near the river mouth, receiving substantial land-derived particles from the Changjiang River ***-attached microbes may be settled in these regions and influenced the observed sediment microbial diversity and biomass, e.g., increased Crenarchaeota relative abundance. The relative enrichment of these two groups in heterotrophic microbes further suggests a reliance of benthic microbiota on substrates with terrestrial origin, particularly specialized on processing sulphur-rich substrates. Regions MG3 and MG4 are located in the outer margin of the area affected by the Changjiang River plume, mainly fed by settling pelagic particles from phytoplankton. Compared to MG1 and MG2, a significant increase in the abundance of Thaumarcheota(phylumlevel) and Nitrosopumilus(genus-level) was found in MG3, suggesting nitrogen-related transformations as the key reactions to sustain microbial metabolism in this region. Coupled with the identified variations in the taxonomic composition, significant differenc

关键词： benthic microbiota biogeography benthic substrate Changjiang River plume East China Sea Yellow Sea

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Sandy seepage faces as bioactive nitrate reactors:Biogeochemistry,microbial ecology and metagenomics

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Geoscience Frontiers 2023年第3期14卷 74-89页

作者： Shan Jiang jie jin Yongjun Wei Ying Wu Yixue Zhang Carlos Rocha Juan Severino Pino Ibánhez Guosen Zhang jing Zhang State Key Laboratory of Estuarine and Coastal Research East China Normal UniversityShanghai 200241China School of Pharmaceutical Sciences Key Laboratory of State Ministry of EducationKey Laboratory of Henan Province for Drug Quality Control and EvaluationCollaborative Innovation Center of New Drug Research and Safety EvaluationZhengzhou UniversityZhengzhou 450001HenanChina Biogeochemistry Research Group School of Natural SciencesTrinity College DublinDublin 2Ireland Instituto de Investigacións Mariñas Consejo Superior de Investigaciones Científicas(IIM-CSIC)Eduardo Cabello 636208 VigoSpain School of Oceanography Shanghai Jiao Tong UniversityShanghai 200040China

Subterranean estuaries are highly dynamic in processing dissolved inorganic nitrogen(DIN).Here we investigate DIN turnover in surface sediments(0–20 cm depth)at the higher,medium and lower intertidal of a seepage face,i.e.,the outer “mouth”of the subterranean estuary,during four consecutive seasons in Sanggou Bay,*** the studied period,ammonium(NH_(4)^(+))and nitrite(NO_(2)^(-))concentrations in the sampled porewaters did not vary significantly with depth or *** contrast,peaks in porewater nitrate(NO_(3)^(-))concentration and decreases in δ^(15)N-NO_(3)^(-) and δ^(18)O-NO_(3)^(-) were observed in the 15–20 cm depth(bottom)sediment,particularly during summer and *** with NO_(3)^(-) production,the sediment total nitrogen was also markedly peaking in the bottom layer of the studied seepage *** with abundant heterotrophic microbes in the sediment,this NO_(3)^(-) accumulation was linked to a reaction chain including organic matter decomposition,ammonification and *** winter,porewater enrichment in total nitrogen occurred closer to the surface of the seepage face but triggered also active NO_(3)^(-) *** pattern reinforced the importance of pelagic organic matter supply on NO_(3)^(-) *** the shallower depths of the seepage face(<12 cm),active net NO3removal occurred except in *** isotopic fractionation(δ^(15)N-NO_(3)^(-) and δ^(18)O-NO_(3)^(-) and metagenomic results revealed denitrification as the main pathway for NO_(3)^(-) *** assimilation from benthic primary producers may also consume a fraction of NO_(3)^(-) at the sediment water *** NO_(3)^(-) production and removal significantly varied in magnitude with season(13.6 to 6.2 nmol cm^(-3)h^(-1)).Substrate supply was the key driver for nitrate cycling,as evidenced by the high NO3production rate in spring by comparison to *** highest NO_(3)^(-) turnover rates were found in summer,suggesting the comb

关键词： Benthic microbiota Nitrate Stable isotopes Subterranean estuary Denitrification

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A combined modulated feedback and temperature compensation approach to improve bias drift of a closed-loop MEMS capacitive accelerometer

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Frontiers of Information Technology & Electronic Engineering 2015年第6期16卷 497-510页

作者： Ming-jun MA Zhong-he jin Hui-jie ZHU (Micro-Satellite Research Center Zhejiang University Hangzhou 310027 China)

The bias drift of a micro-electro-mechanical systems （MEMS） accelerometer suffers from the l/f noise and the tem- perature effect. For massive applications, the bias drift urgently needs to be improved. Conventional methods often cannot ad- dress the l/f noise and temperature effect in one architecture. In this paper, a combined approach on closed-loop architecture modification is proposed to minimize the bias drift. The modulated feedback approach is used to isolate the l/f noise that exists in the conventional direct feedback approach. Then a common mode signal is created and added into the closed loop on the basis of modulated feedback architecture, to compensate for the temperature drift. With the combined approach, the bias instability is improved to less than 13 μg, and the drift of the Allan variance result is reduced to 17 μg at 100 s of the integration time. The temperature coefficient is reduced from 4.68 to 0.1 mg/℃. The combined approach could be useful for many other closed-loop accelerometers.

关键词： Bias drift Closed-loop MEMS accelerometer Modulated feedback approach Temperature compensation

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激波诱导轴对称气动矢量喷管流场数值模拟

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航空动力学报 2008年第9期23卷 1585-1590页

作者：雷金春金捷北京航空航天大学航空发动机数值仿真研究中心北京100191

在落压比3～10，次流相对流量比2．5％～20％工况下，采用RNG k-ε湍流模型对扩张段开缝的激波诱导轴对称气动矢量喷管试验件进行了数值模拟．结果表明：壁面静压分布计算值和试验数据相对误差不大于10．1％．次流的注入使得气动矢量喷... 详细信息

在落压比3～10，次流相对流量比2．5％～20％工况下，采用RNG k-ε湍流模型对扩张段开缝的激波诱导轴对称气动矢量喷管试验件进行了数值模拟．结果表明：壁面静压分布计算值和试验数据相对误差不大于10．1％．次流的注入使得气动矢量喷管内流流动非常复杂，流场结构的主要特征是在扩张段有一对旋向相反的主分离涡与射流角涡和一个位于次流与出口截面之间较大的回流区．流场结构随着落压比和次流相对流量比的变化而改变．

关键词：气动矢量喷管激波诱导流场结构数值模拟

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Help-seeking behavior for erectile dysfunction： clinic-based survey in China

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Asian Journal of Andrology 2014年第1期16卷 131-135页

作者： Kai Zhang Wei Yu Zhan-Ju He jie jin Department of Urology Peking University First Hospital Beijing China

The behavior of Chinese patients seeking help for erectile dysfunction （ED） has not been described in detail. This was an observational study conducted using an outpatient clinic-based questionnaire survey of ED patients. From 2008 to 2009, physicians in 10 medical centers in China enrolled 2693 men （aged 25-70years） diagnosed with ED. The diagnosis was based on the International Index of Erectile Function 5 （IIEF-5） Questionnaire. The men completed a survey that asked questions about demographics, marital status, education level and household income as well as help-seeking behavior and awareness of medical therapy. The mean age of the 2693 men was 43.4 5.3years; 73% were 〈50-years-old and 49% had a high household income. The mean time between noticing ED and taking the first treatment was 4.3 2.1months. Of the 2577 respondents, physicians （54%） and the internet （52%） were most frequently consulted sources for information about ED. Young ED patients preferred using the internet and older patients preferred consulting with physicians. Western medicine （19%） and traditional Chinese medicine （16%） were most frequently used for treatment. Young ED patients preferred to first search the internet for information, whereas older patients first asked physicians for help. Side effects of treatment were the greatest concern, especially for older patients. Physicians and the internet are frequently consulted for ED information and therapy. On the basis of these survey results, we believe that physicians in China should enhance health education about ED, especially via the internet.

关键词： Chinese erectile dysfunction help-seeking behaviors survey treatment

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Numerical Analysis on the Static Performance of Gas Journal Bearing by Using Finite Element Method

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Nanomanufacturing and Metrology 2024年第1期7卷 28-47页

作者： Pengfeng Wang Yuntang Li Xiang Gao Yueliang Ye Ruirui Li Xiaolu Li Yuan Chen jie jin Cong Zhang College of Modern Science and Technology China Jiliang UniversityJinhua 322002China College of Mechanical and Electrical Engineering China Jiliang UniversityHangzhou 310018China

In this paper,finite element method is used to calculate the static performance of gas journal bearing,in which rotation speed term is introduced into the stiffness matrix of linear triangular element to realize the performance calculation of the bearing with rotation *** results indicate that the average gas film thicknesses corresponding to the maximum load capac-ity and stiffness,and the minimum attitude angle increase with the growth of orifice *** capacity and stiffness significantly improved with the increase of rotation speed,eccentricity ratio and supply pressure when the bearing has thin average gas film *** angle increases with the growth of rotation speed,while the growth rate slows down or even decreases at high *** most effective way of reducing attitude angle is to increase supply *** can be found that rotation speed affects attitude angle through changing gas pressure difference between two orifices,while other parameters have the same effect by changing gas pressure at orifice outlet.

关键词： Finite element method(FEM) Gas journal bearing Stiffness matrix Attitude angle

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Interfacial phase formation of Al-Cu bimetal by solid-liquid casting method

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China Foundry 2017年第3期14卷 194-198页

作者： Ying Fu Yu-bo Zhang jin-chuan jie Kateryna Svynarenko Chang-hai Liang Ting-ju Li School of Materials Science and Engineering Dalian University of Technology Dalian 116024 Liaoning China Research Institute of Mechatronics & Automation Bohai University Jinzhou 121003 Liaoning China School of Chemical Engineering Dalian University of Technology Dalian 116024 Liaoning China

The solid-liquid method was used to prepare the continuous casting of copper cladding aluminium by liquid aluminum alloy and solid copper, and the interfacial phase formation of Al-Cu bimetal at different pouring temperatures(700, 750, 800 oC) was investigated by means of metallograph, scanning electron microscopy(SEM) and energy dispersive spectrometry(EDS) methods. The results showed that the pouring temperature of aluminum melt had an important influence on the element diffusion of Cu from the solid Cu to Al alloy melt and the reactions between Al and Cu, as well as the morphology of the Al-Cu interface. When the pouring temperature was 800 oC, there were abundant Al-Cu intermetallic compounds(IMCs) near the interface. However, a lower pouring temperature(700 oC) resulted in the formation of cavities which was detrimental to the bonding and mechanical properties. Under the conditions in this study, the good metallurgical bonding of Al-Cu was achieved at a pouring temperature of 750 oC.

关键词： Al-Cu clad materials interface solid-liquid method microstructure

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Synergistic responses of NHX, AKT1, and SOS1 in the control of Na^+ homeostasis in sweet sorghum mutants induced by ^(12)C^(6+)-ion irradiation

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Nuclear Science and Techniques 2018年第1期29卷 32-38页

作者： Wen-Ting Gu Li-Bin Zhou Rui-Yuan Liu Wen-jie jin Ying Qu Xi-Cun Dong Wen-Jian Li Institute of Modern Physics Chinese Academy of Sciences

Sweet sorghum mutants induced by^(12)C(6+)-ion irradiation were planted under different soil salinity conditions to investigate the mechanisms maintaining the transport and spatial distribution of Na^+. The functions of the synergistic responses of NHX, AKT1, and SOS1 related to Na^+ accumulation were investigated in control(KFJT-CK) sorghum and KF1210-3 and KF1210-4 mutants. The results indicated that the NHX, AKT1, and SOS1 proteins in sweet sorghum are mainly involved in the transport, exclusion, and spatial distribution of Na^+,respectively. In addition to physiological parameters, we also measured the expression levels of NHX, AKT1, and SOS1 genes. The experimental results indicated that 150 m M Na Cl induced marked increases in the transcripts of NHX and SOS1 after 8 and 12 h in the KF1210-3,KF1210-4, and KFJT-CK cultivars. In contrast, however, a decrease in AKT1 was observed. On the basis of our results, we propose a model in which cooperation amongNHX, AKT1, and SOS1 facilitates Na^+ homeostasis in sweet sorghum in response to an increase in salt concentration. Accordingly, study of the regulatory mechanisms in sweet sorghum generated by carbon ion irradiation is essential for the selection of salt-tolerant cultivars.

关键词： 12C6+-ion irradiation Sweet sorghum Salt stress NHX AKT1 SOS1

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Effects of three-dimensional quality assessment nursing intervention on efficacy and disease management of patients undergoing esophageal cancer surgery

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World Journal of Gastrointestinal Surgery 2024年第9期16卷 2979-2985页

作者： Hai-Yan Wu jie jin Chen Chen jing-jing Xu Qi Jiang Dong-Mei Lu Department of Cardiothoracic Surgery Huai'an First People's HospitalHuai'an 223300Jiangsu ProvinceChina

BACKGROUND Esophageal cancer is one of the most common malignant *** three-dimensional quality structure model is a quality assessment theory that includes three dimensions:Structure,process,and *** To investigate the effects of nursing interventions with three-dimensional quality assessment on the efficacy and disease management ability of patients undergoing esophageal cancer *** In this prospective study,the control group received routine nursing,and the intervention group additionally received a three-dimensional quality assessment intervention based on the above routine ***-efficacy and patient disease management abilities were evaluated using the General Self-Efficacy Scale(GSES)and Exercise of Self-Care Agency scale,*** SPSS Statistics for Windows,version 17.0,was used for the data *** This study recruited 112 patients who were assigned to the control and experi-mental groups(n=56 per group).Before the intervention,there was no significant difference in GSES scores between the two groups(P>0.05).After the inter-vention,the GSES scores of both groups increased,with the experimental group showing higher values(P<0.05).At the time of discharge and three months after discharge,the scores for positive attitudes,self-stress reduction,and total score of health promotion in the experimental group were higher than those in the control group(P<0.05).CONCLUSION The implementation of a three-dimensional quality structure model for postoperative patients with esophageal cancer can effectively improve their self-management ability and self-efficacy of postoperative patients.

关键词： Esophageal cancer Three-dimensional quality structure model Self-efficacy Disease management ability

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Research and Development of HERO Mobile Robot's Controller

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Journal of Shanghai University(English Edition) 2001年第Z1期5卷 92-96页

作者： jin Ren-jie

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