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Polycyclic aromatic hydrocarbons in benthos of the northern Bering Sea Shelf and Chukchi Sea Shelf

Journal of Environmental Sciences 2020年第11期32卷 194-199页

作者： Yuxin ma Yurong Sun Yunkai Li Hongyuan Zheng Wenying Mi School of Oceanography Shanghai Jiao Tong UniversityShanghai 200030China College of marine Sciences Shanghai Ocean UniversityShanghai 201306China State Key Laboratory of Pollution Control and Resource Reuse College of Environmental Science and EngineeringTongji UniversityShanghai 200092China MiNJiE institute of Environmental Science and Health Research Max-Plank Street 2Geesthacht 21502Germany

Eighteen polycyclic aromatic hydrocarbons(PAHs)were detected in benthos collected onboard the‘Snow Dragon’in the Northern Bering Sea Shelf and Chukchi Sea Shelf during the 6 th Chinese National Arctic Research Expedition(CHiNARE 2014).18 PAHs for all biota samples ranged from 34.2 to 128.1 ng/g dry weight(dw),with the highest concentration observed in fish muscle(Boreogadus saida)samples close to *** *** PAH composition pattern was dominated by the presence of lighter 3 ring(57%)and 2 ring(28%)PAHs,indicating oil-related or petrogenic sources as important origins of PAH *** of alkyl-PAHs(1-methylnaphthalene and 2-methylnaphthalene)were lower than their parent PAH(naphthalene)in all biological tissue,and their percentage also decreased significantly(pith those in the corresponding *** were no significant relationships between PAH concentrations and trophic levels,which is possibly due to the combined results of the complex benthic foodweb in the subarctic/Arctic shelf region,as well as a low assimilation/effective metabolism for *** to toxic potency evaluation results from TCDD toxic equivalents(TEQs)and ba P-equivalent(ba PE)values,whelk(Neptunea heros)and starfish(Ctenodiscus crispatus)are two macroinvertebrate species showing relatively higher dioxin-like toxicity and carcinogenic risk.

关键词： Polycyclic aromatic hydrocarbons Arctic shelf Benthos Toxic potency Bioaccumulation

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“一带一路”与少数民族音乐研究——巴基斯坦藏族后裔的跨界研究为例

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中国音乐 2019年第1期 76-83页

作者：银卓玛拥巴中国艺术研究院音乐研究所中国藏学研究中心图书馆

在"一带一路"战略背景下,少数民族音乐研究者如何抓住时代机遇,提升研究空间,并与沿线国家建立平台,实现合作是当代学者义不容辞的责任。"一带一路"国家众多,"以小见大、以点带线"是实现沿线各国民族音乐研究的主要途径。在诸多的沿线... 详细信息

在"一带一路"战略背景下,少数民族音乐研究者如何抓住时代机遇,提升研究空间,并与沿线国家建立平台,实现合作是当代学者义不容辞的责任。"一带一路"国家众多,"以小见大、以点带线"是实现沿线各国民族音乐研究的主要途径。在诸多的沿线国家中,笔者聚焦巴基斯坦北部的巴尔蒂斯坦这片土地,这是一片与我国历史上有过密切关系,而我们却知之甚少的土地。在国内,对于巴尔蒂斯坦藏族后裔的一手资料极为匮乏,通过查阅、整理,本文以国内外现有文献为基础,对巴尔蒂斯坦藏族后裔的历史、文化、现状及音乐等方面进行梳理,并将可进行跨界音乐研究的巴尔蒂问答歌"索玛莱克"和"格萨尔"说唱进行简述。进而,通过丝绸之路上民族音乐传播的个案分析,阐述少数民族音乐跨界研究与"一带一路"大背景的密切关系。

关键词： “一带一路” 丝绸之路少数民族音乐巴尔蒂斯坦跨界研究藏族后裔

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基于QAR数据的航空发动机热力学模型构建方法

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航空动力学报 2023年第11期38卷 2591-2600页

作者：马超赵树杰徐建新巴翔中国民航大学航空工程学院天津300300 中国南方航空股份有限公司河南分公司郑州450000

为了能够建立更加接近真实运行环境的航空发动机热力学模型,提出了一种依据航空发动机运行QAR(quick access recorder)数据的热力学模型构建方法。依据发动机传统设计点热力学方程,利用最小二乘辨识原理,修正25站位压强求解方程,获得干... 详细信息

为了能够建立更加接近真实运行环境的航空发动机热力学模型,提出了一种依据航空发动机运行QAR(quick access recorder)数据的热力学模型构建方法。依据发动机传统设计点热力学方程,利用最小二乘辨识原理,修正25站位压强求解方程,获得干空气热力学模型;根据混合气体熵值的可加性,构建了降雨工况下的湿空气热力学模型;最后结合遗传算法优化的粒子群算法,依据QAR数据进行干空气和湿空气热力学模型参数计算与验证。结果表明该热力学模型计算得到的干空气和湿空气热力学参数与QAR数据间最大误差小于13%,较为接近实际绝热参数。证实了基于QAR数据构建发动机热力学模型的可行性和该热力学模型构建方法求解热力参数的有效性。

关键词：热力学模型 QAR数据最小二乘辨识粒子群遗传算法

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基于EWT-熵值方法的发动机风扇叶片损伤监控

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航空动力学报 2023年第1期38卷 23-31页

作者：徐建新赵树杰马超巴翔中国民航大学航空工程学院天津300300 中国南方航空股份有限公司河南航空有限公司郑州450000

为了从发动机性能数据中寻找风扇叶片外来物损伤航班特征,从而将风扇叶片受外来物损伤的航班区分出来,在机载快速存储记录器(quick access recorder, QAR)数据检测中提出将经验小波分解和信息熵结合的方法。通过对各航班原始振动数据的... 详细信息

为了从发动机性能数据中寻找风扇叶片外来物损伤航班特征,从而将风扇叶片受外来物损伤的航班区分出来,在机载快速存储记录器(quick access recorder, QAR)数据检测中提出将经验小波分解和信息熵结合的方法。通过对各航班原始振动数据的拟合平滑处理和经验小波分解,提取了分解后各模态的能量熵和,分析了添加汉明(Hanmming)窗函数的多尺度熵,结果表明:拟合后数据的熵值变化更明显,且风扇叶片受外来物损伤航班的能量熵和有10%以上的降低趋势,改进后的多尺度熵有40%以上的增长趋势,均明显异于其他正常航班。证明采用EWT-熵值方法可以较好地对发动机风扇叶片外来物损伤情况进行监控。

关键词：外来物损伤机载QAR数据经验小波分解能量熵多尺度熵

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超音速微粒轰击45钢表面纳米化的研究

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材料科学与工艺 2007年第3期15卷 342-346页

作者：巴德玛马世宁李长青孟凡军熊天英装甲兵工程学院再制造技术国防科技重点实验室北京100072 中国科学院金属研究所辽宁沈阳110016

采用超音速微粒轰击技术（SFPB）对由铁素体和珠光体组成的45钢进行表面纳米化处理,在材料表面制备了纳米结构表层,利用X射线衍射、扫描电镜、透射电镜等分析技术研究了表面纳米结构层不同深度的微观组织结构特征.研究表明：经SFPB处理... 详细信息

采用超音速微粒轰击技术（SFPB）对由铁素体和珠光体组成的45钢进行表面纳米化处理,在材料表面制备了纳米结构表层,利用X射线衍射、扫描电镜、透射电镜等分析技术研究了表面纳米结构层不同深度的微观组织结构特征.研究表明：经SFPB处理后,材料表层发生了严重的塑性变形,形成了由铁素体和渗碳体组成的纳米结构层;随着处理时间的增加纳米结构层的厚度由几微米增加到15μm（晶粒尺寸〈100 nm）;在材料的最表层形成了晶粒尺寸约15 nm的具有随机取向的等轴晶,纳米晶粒尺寸随着距表面距离的增加增大;在距表面约为15μm处,存在平均晶粒尺寸约100 nm的等轴晶和具有相近尺寸的胞状结构;在约30μm处,大量的高密度位错墙分别将铁素体相和珠光体相分割成尺寸在200~500 nm的胞状结构.分析表明45钢表面纳米化主要是位错运动的结果.

关键词：超音速微粒轰击技术表面纳米化纳米结构表层 45钢

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EVALUATiON OF THE iNTROGRESSED LiNES AND SCREENiNG FOR ELiTE GERMPLASM iN GOSSYPiUM

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Chinese Science Bulletin 2006年第3期51卷 304-312页

作者： PANG Chaoyou DU Xiongming ma Zhiying Cotton Research institute Chinese Academy of Agricultural Sciences Key Lab of Cotton Genetic Improvement Anyang 455112China Hebei Agricultural University Baoding 071001China

in this research, 155 cotton introgressed lines from interspecific hybridization have been col- lected for the purpose of evaluating the effects of enhancement of new upland cotton germplasm by interspecific hybridization, screening for elite germ- plasm and improving cotton breeding. Through iden- tification of various agricultural traits, we found that different wild cotton species had different capacities in terms of fiber quality, disease resistance, tolerance of abiotic stress, pest resistance and so on. SSR molecular marker technology has been used to de- tect the exotic genetic elements in interspecific hy- brids, and 25 SSR specific loci that can be classified into two groups were found among 15 pairs of SSR primers. Results also showed that 8 exotic germ- plasm (Gossypium barbadense, G. arboreum and G. thurberi, etc) had genetic transmission toward upland cotton. A strategy of screening elite germplasm with exotic genes based on the molecular marker-assisted breeding techniques was suggested, and 18 lines with high-quality fiber and 4 lines with resistance to Fusanrium wilt and Verticillium wilt have been ob- tained.

关键词：棉花种间杂交促进作用种质基因渗入

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An Early Cretaceous garnet-bearing metaluminous A-type granite intrusion in the East Qinling Orogen,central China:Petrological,mineralogical and geochemical constraints

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Geoscience Frontiers 2012年第5期3卷 635-646页

作者： Jinyang Zhang Changqian ma Zhenbing She Faculty of Earth Resources China University of Geosciences Wuhan 430074 China Faculty of Earth Sciences China University of Geosciences Wuhan 430074 China State Key Laboratory of Geological Processes and Mineral Resoureex China University of Geosciences Wuhan 430074 China

The Erlangmiao granite intrusion is located in the eastern part of the East Qinling Orogen. The granite contains almost 99 vol.% felsic minerals with accessory garnet, muscovite, biotite, zircon, and Fe-Ti oxide. Garnet is the dominant accessory mineral, shows zoned texture, and is rich in w（FeO）（14.13%--16.09%） and w（MnO）（24.21%--27.44%）. The rocks have high SiO2, alkalis, FeOt/ MgO, TiO2/MgO and low A1203, CaO with w（Na2O）/w（K20）〉 ]. Their Rb, Ga, Ta, Nb, Y, and Yb contents are high and Sr, ba, Eu, Zr, P, and Ti contents are low. These features indicate that the Erlang- miao granite is a highly evolved metaluminous A-type. Garnet crystallized at the expense of biotite from the MnO-rich evolved melt after fractionation of biotite, plagioclase, K-feldspar, zircon, apatite, and ilmenite. The relatively high initial 878r/S6Sr ratios （0.706--0.708）, low and negative εNd （120 ma） values （-6.6 to -9.0）, and old Nd model ages （1.5--1.7 Ga） suggest that the rocks were probably formed by partial melting of the Paleoproterozoic granitic gneisses from the basement, with participation of depleted mantle in an extensional setting.

关键词： Garnet A-type granite Early Cretaceous East Qinling Orogen

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Petrogenesis of the Langdu High-K Calc-Alkaline intrusions in Yunnan Province: Constraints from Geochemistry and Sr-Nd isotopes

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Acta Geologica Sinica(English Edition) 2013年第2期87卷 454-466页

作者： REN Tao ZHANG Xingchun HAN Runsheng ma Meijuan Faculty of Land and Resource Engineering Kunming University of Science and Technology State Key Laboratory of Ore Deposit Geochemistry Institute of Geochemistry Chinese Academy of Science

The Langdu high-K calc-alkaline intrusions are located in the Zhongdian area, which is the southern part of the Yidun island arc. These intrusive rocks consist mainly of monzonite porphyry, granodiorite, and diorite porphyry. The K20 content of majority of these rocks is greater than 3%, and, in the K20-SiO2 diagram, all the samples fall into the high-K calc-alkaline to shoshonitic fields. They are enriched in light rare earth elements （LREEs） and depleted in heavy rare earth elements （HREEs; LaN/YbN = 14.3-21.2）, and show slightly negative Eu anomalies （6Eu = 0.77-1.00）. These rocks have high K, Rb, Sr, and ba contents; moderate to high enrichment of compatible elements （Cr = 36.7-79.9 ppm, Co = 9.6-16.4 ppm, and MgO = 2.2%-3.4%）; low Nb, Ta, and Ti contents, and characteristic of low high field strength elements（HFSEs） versus incompatible elements ratios （Nb/Th = 0.75, Nb/La = 0.34） and incompatible elements ratios （Nb/U = 3.0 and Ce/Pb = 5.1, ba/Rb = 12.0）. These rocks exhibit restricted Sr and Nd isotopic compositions, with （87Sr/S6Sr）i values ranging from 0.7044 to 0.7069 and ENd（t） values from -2.8 to -2.2. The Sr-Nd isotope systematic and specific trace element ratios suggest that Langdu high-K calc-alkaline intrusive rocks derived from a metasomatized mantle source. The unique geochemical feature of intrusive rocks can be modeled successfully using different members of a slightly enriched mantle, a slab-derived fluid, and terrigenous sediments. it can be inferred that the degree of partial melting and the presence of specific components are temporally related to the tectonic evolution of the Zhongdian island arc. Formation of these rocks can be explained by the various degrees of melting within an ascending region of the slightly enriched mantle, triggered by the subduction of the Garz^--Litang ocean, and an interaction between the slab-derived fluid and the terrigenous sediments.

关键词： high-K calc-alkaline intrusions geochemistry isotope Zhongdian island arc

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Comparative studies between humans and golden Syrian hamsters via thromboelastography

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Animal Models and Experimental Medicine 2024年第4期7卷 570-577页

作者： Ze Yang Lili Xie Jingjing ba Simin Zan Letong Zhang Xinyi Zhang Yang Yu School of Laboratory Animal&Shandong Laboratory Animal Center Shandong First Medical University&Shandong Academy of Medical SciencesJinanChina The Second Affiliated Hospital of Shandong First Medical University TaianChina

background:Thromboelastography(TEG)is a widely utilized clinical testing method for real-time monitoring of platelet function and the thrombosis *** metab-olism disorders are crucial risk factors for *** lipid metabolism charac-teristics of hamsters resemble those of humans more closely than mice and rats,and their relatively large blood volume makes them suitable for studying the mechanisms of thrombosis related to plasma lipid *** blood samples from golden Syrian hamsters and healthy humans were obtained following standard clinical *** was employed to evaluate coagulation factor function,fibrinogen(Fib)function,platelet function,and the fibrinolytic ***:The whole blood from hamster or healthy human was isolated following the clinical procedure,and TEG was employed to evaluate the coagulation factor func-tion,Fib function,platelet function,and fibrinolytic *** analysis used ACLTOP750 automatic coagulation analysis *** routine testing used XN-2000 automatic blood ***:TEG parameters revealed that hamsters exhibited stronger coagulation fac-tor function than humans(reaction time[R],p=0.0117),with stronger Fib function(alpha angle,pime[K],pion did not differ signifi-cantly(maximum amplitude[ma],p=0.077).Hamsters displayed higher coagulation status than humans(coagulation index[Ci],p=0.0023),and the rate of blood clot dissolution in hamsters differed from that in humans(percentage lysis 30 min after ma,p=0.02).Coagulation analysis parameters indicated that prothrombin time(PT)and activated partial thromboplastin time(APTT)were faster in hamsters than in hu-mans(PT,p=0.0014;APTT,p=0.03),whereas the Fib content was significantly lower in hamsters than in humans(pignificant difference was observed in thrombin time(p=0.1949).Conclusions:in summary,TEG could be used to evaluate thrombosis and bleeding parameters in whole blood samples

关键词： platelet function Syrian hamster thromboelastography(TEG) thrombosis

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CPAFFC Delegation AttendeCPAFFC Delegation Attended 6th Asia and Europe People’s Forum

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Voice of Friendship 2007年第1期 42-43页

作者： ba Cuicui

ma Hairong and ba Cuicui of the CPAFFC attended the 6th Asia and Europe People’s Forum held at Helsinki, Finland from September 3 to 6, 2006. The Forum, which is a coordinate ac- tivity of the Asia Europe Meeting, se... 详细信息

关键词： democracy globalization political audience Finland

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