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The response of sedimentary record to catchment changes induced by human activities in the western intertidal flat of Yalu River Estuary,China

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Acta Oceanologica Sinica 2017年第4期36卷 54-63页

作者： SHI Yong LIU zhishuai GAO Jianhua YANG Yang WANG Yaping National Ocean Technology Center Tianjin 300111 China Ministry of Education Key Laboratory for Coast and Island Development Nanjing University Nanjing 210093 China

The response to the catchment changes of the sedimentary environment of the western intertidal flat of Yalu River Estuary was investigated by analyzing the vertical variations of the grain size of sediment cores,along with the hydrologic data and human activities in the *** results demonstrated a stepwise decreasing trend for the variations of both the sediment load and water discharge into the sea,which could be divided into three stages as 1958–1970,1971–1990 and 1991–*** construction and the changes of catchment vegetation coverage turned out to be the two predominant contributors to the *** are four periods for the variation of the sensitive components of the sediment cores from 1940 to 2010,i.e.,1940–1950,1951–1980,1981–1990 and 1991–*** vertical distribution of grain size in the cores mainly varied with the changes of vegetation coverage in the catchment and reservoir construction from 1960 to 1980,whereas it varied depending on the intensity of water and soil erosion in the catchment from 1980 to *** the further reduction of the water and sediment input into the sea from 1990 to 2009,this period was characterized by coarsening trends for the grain size of sediment in the estuarine intertidal flat and correspondingly,the significantly increased silt contents of the sensitive component.

关键词： runoff and sediment load human activities sediment record sensitive component Yalu River

血清Irisin、IL-1β及TNF-α对重症肌无力患者危象预测价值

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脑与神经疾病杂志 2024年第1期32卷 22-25页

作者：牟艳春赵雅婷张执帅中国人民解放军联勤保障部队第九七○医院神经内科山东264200

目的探讨血清鸢尾素(Irisin)、白细胞介素-1β (IL-1β)及肿瘤坏死因子-α (TNF-α)对重症肌无力(MG)危象的预测价值。方法选取2019年1月至2022年12月中国人民解放军联勤保障部队第九七〇医院神经内科收治入院的98例MG患者为MG组,根... 详细信息

目的探讨血清鸢尾素(Irisin)、白细胞介素-1β (IL-1β)及肿瘤坏死因子-α (TNF-α)对重症肌无力(MG)危象的预测价值。方法选取2019年1月至2022年12月中国人民解放军联勤保障部队第九七〇医院神经内科收治入院的98例MG患者为MG组,根据是否发生MG危象分为危象组(12例)和非危象组(86例),另选取同期46例健康体检者为对照组。对比各组血清Irisin、IL-1 β、TNF-α水平,分析其与MG病情的相关性。观察血清Irisin、IL-1 β及TNF-α对MG危象的预测价值。结果 MG组血清Irisin水平显著低于对照组,血清IL-1 β及TNF-α水平高于对照组(P<0.05)。Spearman相关性分析显示,血清Irisin水平与MG病情呈负相关,而血清IL-1 β、TNF-α水平与病情严重程度呈正相关(P<0.05)。危象组血清Irisin水平低于非危象组,血清IL-1β、TNF-α水平则高于非危象组(P<0.05)。血清Irisin、IL-1 β及TNF-α联合预测MG危象的曲线下面积为0.895,敏感度为91.7%,特异度为76.7%。结论血清Irisin、IL-1 β及TNF-α水平与MG病情严重程度有关,可作为早期预测MG危象的参考指标。

关键词：重症肌无力危象鸢尾素白细胞介素-1β 肿瘤坏死因子-α

基于自恢复型下垂控制的微电网运行控制策略研究

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太阳能学报 2024年第8期45卷 71-77页

作者：田春胜任永峰胡志帅孟庆天陈建张艳锋内蒙古工业大学能源与动力工程学院呼和浩特010080 华润电力投资有限公司山西分公司太原030006

针对微电网并、离网模式切换、微电源突变以及负荷扰动导致的系统频率和电压波动问题,提出频率、电压自恢复型下垂控制策略。首先,基于传统下垂控制引入频率差和电压差作为反馈环节,建立储能单元自恢复型下垂控制模型。其次,通过伯德图... 详细信息

针对微电网并、离网模式切换、微电源突变以及负荷扰动导致的系统频率和电压波动问题,提出频率、电压自恢复型下垂控制策略。首先,基于传统下垂控制引入频率差和电压差作为反馈环节,建立储能单元自恢复型下垂控制模型。其次,通过伯德图对自恢复型和传统型下垂控制系数在不同频段范围内的性能进行对比分析。自恢复型下垂控制因采用PI控制和引入修正下垂系数因子使系统具备较好的频率和电压自恢复效果,提升动态调整能力,表现出较好的适应性。最后,基于Matlab/Simulink平台建立35 kV风光储微电网模型,通过时域仿真实验验证自恢复型下垂控制策略的有效性。

关键词：微电网并、离网自恢复型下垂控制伯德图风光储

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Effects of varying densities on serum reproductive parameters in pen-reared juvenile female rainbow trout Oncorhynchus mykiss farms

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Chinese Journal of Oceanology and Limnology 2017年第1期35卷 98-108页

作者： HOU zhishuai Fisheries College Ocean University of China Qingdao 266003 China Key Laboratory of Mariculture Ministry of Education Ocean University of China Qingdao 266003 China

The primary goal of this study was to assess the effect of varying densities on serum reproductive parameters of immature rainbow trout Oncorhynchus mykiss. Experimental trout were maintained in intensive, pen-reared farms for 300 days in fresh water reservoirs. Initial densities were 4.6, 6.6, and 8.6 kg/m^3(40, 60, 80 ind./m^3), indicated as SD1, SD2, SD3, and final densities were 31.1, 40.6, 49.3 kg/m^3, respectively. A summary of the ovarian stages were observed by histological examination. Serum E 2(estradiol), T(testosterone) were evaluated by radioimmunoassay and FSH(follicle-stimulatinghormone), LH(luteinizing-hormone), vitellogenin, 17α,20β-P(17α,20βdihydroxy4-pregnen-3-one) were measured by enzyme-linked immunosorbent assay. Our findings demonstrated that ovarian development were retarded(from stage Ⅲ to stage Ⅳ) at highest rearing density(SD3) after 180 days of intensive culture(over 40.6 kg/m^3). In addition, we observed an inverse relationship between serum reproductive parameters and rearing density. Furthermore, compared to serum reproductive parameters of SD1, E 2, T, FSH, vitellogenin, 17α,20β-P, GSI and LH of two higher density groups decreased firstly and significantly at 60(over 15.9 kg/m^3), 180(over 31.7 kg/m^3), 180(over 40.6 kg/m^3), 240(over 36 kg/m^3), 240(over 36 kg/m^3), 240(over 45 kg/m^3) and 300(over 49.3 kg/m^3) days, respectively. Comparing serum reproductive parameters within the same ovarian development stage of rainbow trout from varying densities revealed that higher population density also led to significantly lower overall serum reproductive parameters. Overall, this study presents the reproductive, endocrinological parameters of juvenile female rainbow trout at high rearing densities and indicates the need for rainbow trout(114.44±5.21 g, 19.69±0.31 cm) that are initially stocked at 6.6 or 8.6 kg/m^3 should be classified and subdivided into lower density after 180 days of farming(not over 31.7 kg/m^3).

关键词： rainbow trout density gonadotropin steroid hormone vitellogenin

Comparative Study of Electrochemical Performance and Microbial Flora in Microbial Fuel Cells by Using Three Kinds of Substrates

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Chemical Research in Chinese Universities 2019年第2期35卷 292-298页

作者： ZHAO Yu FAN Lei YANG Donghua DONG zhishuai WANG Yuxue AN Xia College of Chemistry and Chemical Engineering Taiyuan University cf TechnologyTaiyuan 030024P.R.China

This work aimed to investigate the distinct electrochemical performance and microbial flora of microbial fuel cells(MFCs)in relation to different single hazardous fed *** replicate MFCs were inoculated with the same microbial consortium from a coking wastewater treatment plants wherein ammonium chloride(ammoniiim chlo-ride-fed MFC,N-MFC),phenol(phenol-fed MFC,P-MFC)and potassium sulphide(potassium sulphide-fed MFC,S-MFC)were the sole substrates and main components of real coking *** initial concentrations of am-monium chloride,phenol and potassium sulphide of 0.75,0.60 and 0.55 g/L,the removal efficiencies reached 95.6%,90.6%and 99.9%,respectively,whereas the peak output power densities totalled 697,324 and 1215 mW/m^***-bial community analysis showed that the respective addition of substrate substantially altered the microbial community structure of anode biofllm,resulting in changes in relative abundance and emergence of new strains and further affecting the electrochemical properties of *** chemical oxygen demand(COD)removal efficiency of real coking wastewater,in which,the inoculum was the combined biomass from the three MFCs,reached 82.3%.

关键词： Comparison of microbial flora Comparison of electrochemical performance Sole substrate Microbial fUel cell(MFC)

基于双脉冲LIBS结合偏最小二乘回归的稀土元素定量分析

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中国无机分析化学 2024年第2期14卷 183-190页

作者：邓志伟郭苏彤徐智帅赵梓屹卢颖刘莉郝中骐南昌航空大学江西省光电信息科学与技术重点实验室南昌330063 南昌航空大学无损检测技术教育部重点实验室南昌330063

激光诱导击穿光谱(LIBS)是一种以激光为激发源的等离子体发射光谱分析技术,已有将其用于稀土元素的定量分析研究,但由于稀土矿基体差异大、元素含量低,定量分析灵敏度和准确度仍有待提高。通过使用单激光分束构造双脉冲LIBS系统,并结合... 详细信息

激光诱导击穿光谱(LIBS)是一种以激光为激发源的等离子体发射光谱分析技术,已有将其用于稀土元素的定量分析研究,但由于稀土矿基体差异大、元素含量低,定量分析灵敏度和准确度仍有待提高。通过使用单激光分束构造双脉冲LIBS系统,并结合偏最小二乘回归(PLSR)算法实现对稀土矿石样品中的稀土元素La、Dy、Yb和Y的定量分析。结果表明,双脉冲LIBS结合PLSR可建立更加稳定的定标模型,与常规基本定标法相比,La、Dy、Yb和Y元素的相对均方根预测误差(RMSEP)从0.0061%、0.0037%、0.0045%、0.0280%降低至0.0044%、0.0016%、0.0029%、0.0134%,平均相对预测误差(AREP)从10.88%、15.27%、6.42%、17.20%降低至6.67%、3.62%、4.10%、7.98%。因此,双脉冲LIBS结合PLSR方法可以有效地提高LIBS对稀土矿石中稀土元素的定量分析能力。

关键词：双脉冲激光诱导击穿光谱稀土元素偏最小二乘回归

Transcriptome Analysis Reveals New Insights into the Respiration Metabolism Mechanism of Different Feeding Rations of Sea Cucumber(Apostichopus japonicus)

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Journal of Ocean University of China 2023年第6期22卷 1621-1634页

作者： MEI Yaoping HOU zhishuai GAO Qinfeng DONG Shuanglin LI Xueqi XU Yuling Key Laboratory of Mariculture Ministry of EducationOcean University of ChinaQingdao 266003China Function Laboratory for Marine Fisheries Science and Food Production Processes Qingdao National Laboratory for Marine Science and TechnologyQingdao 266235China

Sea cucumber(Apostichopus japonicus)is an excellent model for investigating effects of bottom-dwellers on carbon mig-ration and ***,the molecular mechanism of respiratory metabolism process variation caused by feeding rations is poorly *** this study,treatment groups set as 1%(about 0.63g),3%,and 7%of total body weight(named F1,F3 and F7 groups respectively).The potential molecular mechanisms behind the functions of respiratory tree and body wall were investigated by RNA-Seq.A total of 52411 expressed genes were identified from 89342 expressed *** results showed 759,254 and 334 genes were up-regulated,and 334,445 and 992 genes were down-regulated in respiratory tree of F1 vs.F3,F1 vs.F7 and F3 vs.F7,***,2070,1601 and 896 genes were up-regulated,and 1303,1337 and 1144 genes were down-regulated in body wall between F1 vs.F3,F1 vs.F7 and F3 vs.F7,*** expressed genes were enriched in salivary secretion and ECM-receptor interaction pathways in respiratory tree,and in various types of N-glycan biosynthesis,ribosome and sphingolipid metabolism pathways in body *** results suggested respiratory tree and body wall were involved in activation of respiratory metabolisms in response to different feeding *** research provided valuable knowledge for physiological differences in res-piratory metabolism.

关键词： transcriptomics Apostichopus japonicus feeding ration respiration metabolism

Exogenous dendritic cells aggravate atherosclerosis via P-selectin/PSGL-1 pathway

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BIOCELL 2020年第2期44卷 225-236页

作者： LEI ZHONG LEI GUO zhishuai YE SHANFENG ZHANG RONGCHONG HUANG Department of Cardiology The First Affiliated Hospital of Dalian Medical UniversityDalian116011China Cardiac Center/Division of Cardiovascular Diseases Beijing Friendship HospitalCapital Medical UniversityBeijing100050China Dalian Medical University Dalian Medical UniversityDalian116044China

Studies have found that a large number of inflammatory cells,P-selectin,and mature dendritic cells(DCs)are expressed in the damaged and shoulder parts of atherosclerotic plaque,which demonstrates that P-selectin and mature DCs participate in the immune inflammatory response leading to the development of ***,it is unclear how the above factors interact in this *** this study,we investigated the role of P-selectin and its receptor,P-selectin glycoprotein ligand(PSGL)-1 in atherosclerosis,with the finding that DC surface marker expression was consistently high in the P-selectin group while consistently low in the PGSL-1+DCs group,with CD40 and CD86 expressed by 3.84%and 2.05%for the *** highest expression of CD80,CD83,and MHC II was discovered in the DC group,at 7.49%,3.68%,and 8.98%,*** of this study are similar to those obtained previously by Ye et al.(2017),which showed larger atherosclerotic lesions in mice that received exogenous DCs,compared with those treated with *** this study,the greatest level of atherosclerosis,fibrosis,and lipid deposition was also seen in mice that received exogenous DCs.

关键词： Glycoprotein ligand Toll-like receptor 4 Coronary heart disease

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双歧杆菌调控骨质疏松症作用机制研究进展

中国骨质疏松杂志 2024年第6期30卷 921-925页

作者：李想孔令俊邓叶龙张金磊韩升龙孟汉杰王植帅孙兴翔甘肃中医药大学甘肃兰州730000 甘肃省中医院甘肃兰州730050

肠道菌群作为人体内最重要的微生物群落,可参与调控多种生理病理过程。其中双歧杆菌作为肠道中的主要益生菌之一,在维持人体健康中发挥重要作用,随着对其研究不断深入,发现双歧杆菌与骨代谢平衡密切相关,进而影响骨质疏松症发生发展。... 详细信息

肠道菌群作为人体内最重要的微生物群落,可参与调控多种生理病理过程。其中双歧杆菌作为肠道中的主要益生菌之一,在维持人体健康中发挥重要作用,随着对其研究不断深入,发现双歧杆菌与骨代谢平衡密切相关,进而影响骨质疏松症发生发展。笔者检索国内外相关文献对双歧杆菌及其代谢产物通过调控M1/M2巨噬细胞极化、“Breg-Treg-Th17”细胞轴、肠道炎症、维生素D吸收以及骨形态发生蛋白-2、富含半胱氨酸型酸性蛋白等相关基因表达维持骨代谢平衡进行综述,旨在为进一步研究骨质疏松症提供参考和依据。

关键词：肠道菌群双歧杆菌骨质疏松骨代谢