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| 1 | Community structure and spatial distribution of macrobenthos in the shelf area of the Bering Sea显示文摘Field investigations of marine macrobenthos were conducted at ten sites in the Bering Sea in July 2010. Altogether 90 species of macrobenthos belonging to 59 families and 78 genera were identified. Among them, 41 polychaetes, 16 mollusks, 23 crustaceans, three echinoderms, two cnidarians, one nemertean, one priapulid, two sipunculids, and one echiuran were identified. The average density and biomass of total macrobenthos were 984 ind./m2 and 1 207.1 g/m2 of wet weight, respectively. The predominant species in the study area were Scoloplos armiger, Eudorella pacifica, Ophiura sarsii, Heteromastus filiformis, Ennucula tenuis, and Harpiniopsis vadiculus by abundance, while the predominant species in this area was Echinarachnius parma by biomass. Hierarchical cluster analysis(Bray–Curtis similarity measure) revealed that two important benthic assemblages in the study area were Community A and Community B. Community A was stable and Community B was unstable, as shown by the Abundance/Biomass Comparisons(ABC) approach. The macrobenthic community structure in the shelf of the Bering Sea was characterized by its high abundance and biomass, high productivity but great heterogeneity. | WANG Jianjun HE Xuebao LIN Heshan LIN Junhui HUANG Yaqin ZHENG Chengxing ZHENG Fengwu LI Rongguan JIANG Jinxiang | 2014 | Acta Oceanologica Sinica2014,33,6: | 4 |
| 2 | Geochronology and geochemistry of Cretaceous-Eocene granites,Tengchong Block(SW China):Petrogenesis and implications for Mesozoic-Cenozoic tectonic evolution of Eastern Tethys显示文摘The Early Cretaceous-Early Eocene granitoids in the Tengchong Block record the evolutionary history of the Mesozoic-Cenozoic tectono-magmatic evolution of Eastern Tethys.(a)The Early Cretaceous granitoids with relatively low(^(87)Sr/^(86)Sr)iratios of 0.7090-0.7169 andε_(Nd)(t)values of-9.8 to-7.8 display metaluminous,calc-alkaline dominated by I-type granite affinity and hybrid mantle-crust geochemical signatures.They may have been derived from melting of the subducted Meso-Tethyan BangongNujiang oceanic crust with terrigenous sediments in an arc-continent collisional setting.(b)The Late Cretaceous-Paleocene granitoids with relatively high(^(87)Sr/^(86)Sr)iratios of 0.7109-0.7627,andε_(Nd)(t)values of-12.1 to-7.9 exhibit metaluminous to peraluminous,calc-alkaline dominated by S-type granite affinity and hybrid Lower-Upper crust geochemical signatures,which may be originated from partial melting of the Meso-Proterozoic continental crust in the collision setting between the Tengchong Block and Baoshan Block.(c)The Early Eocene granitoids have metaluminous,calc-alkaline I-type and S-type granites dual affinity,with relatively high(^(87)Sr/^(86)Sr)iratios of 0.711-0.736,ε_(Nd)(t)values of-9.4 to-4.7,showing crust-mantle mixing geochemical signatures.They may have been originated from partial melting of the late Meso-Proterozoic upper crustal components mixed with some upper mantle material during the ascent process of mantle magma caused by the subduction of the Neo-Tethyan Putao-Myitkyian oceanic crust,and collision between the Western Burma Block and the Tengchong Block.It is these multi-stage subductions and collisions that caused the spatial and temporal distribution of the granitic rocks in the Tengchong Block. | Yongqing Chen Guangjie Li Luxue Qin Yingxiang Lu Chengxing Jiang | 2022 | Geoscience Frontiers2022,13,2: | 3 |
| 3 | Biodiversity and community structural characteristics of macrobenthos in the Chukchi Sea显示文摘Field sampling of the macrobenthos from 23 stations in the Chukchi Sea was conducted during the 4th CHINARE(Chinese National Arctic Research Expeditions, July–August, 2010). We identified a total of 140 species of macrozoobenthos belonging to nine phyla, which were dominated by polychaetes(66), crustaceans(30), and mollusks(25), followed by echinoderms(9) and others(ten others, including four cnidarians, one oligochaete, one sipuncula, one priapulida, two bryozoans, and one urochordata). The dominant species were Aphelochaeta pacifica, Heteromastus filiformis, Nephtys ciliata, Nephtys caeca, Scoletoma fragilis, Golfingia margaritacea, Nuculana pernula, Macoma calcarea, Ennucula tenuis, Macoma inquinata, Musculus discors, Echinarachnius parma, and Ophiura sarsii, so there were more cold-eurythermal boreal immigrants than truly Arctic species(endemics). The average density and biomass(mean ± SD across all stations) of the total macrozoobenthos were(916 ± 907) ind/m2 and(902.9 ± 1 227.7) g/m2(wet weight), respectively. Relatively high density and biomass were observed in the samples from the northeastern and southern Chukchi Sea. The spatial variation of benthic communities in the study sea area was relatively large; this spatial heterogeneity has led to high diversity and a patchy distribution pattern in the community structure. Compared to the 1st CHINARE( July–August, 1999), this investigation revealed different degrees of decreases in the average taxa numbers and the average density, abundance, and biodiversity in the area over the recent decade, which might be associated with global warming, human activities, and sea ice variations. | WANG Jianjun LIN Heshan HE Xuebao LIN Junhui HUANG Yaqin LI Rongguan ZHENG Chengxing ZHENG Fengwu JIANG Jinxiang | 2014 | Acta Oceanologica Sinica2014,33,6: | 3 |
| 4 | Study on ecology of foulers on buoys in Dianbai, Guangdong, China显示文摘From May to July, 1985, foulers on eleven navigation buoys have been surveyed in Shuidongand Bohe Harbours of Dianbai, Guangdong. Foulers on different parts of buoys (side, bottom and in-side tail tube) were sampled. The thickness and cover area of foulers were measured in the field andall the foulers on an area of 30×30 cm^2 were taken back for lab. identification. Thirty-four quatita-tive samples and several qualitative samples have been got and five hundred and twenty-four sampleshave been classified. | Lin Sheng, Huang Zongguo, Li Chuanyan, Zheng Chengxing and Wang JianjunThird Institute of Oceanography, Slate Oceanic Adrninistration, Xiamen, China | 1990 | Acta Oceanologica Sinica1990,9,4: | 1 |
| 5 | Clinical implication of coronary tortuosity in patients with coronary artery disease显示文摘 | Yang LI Chengxing SHEN Yanan JI | 2011 | PLo S One2011,6,: | 1 |
| 6 | Simulation measurement of surface temperature and velocity of in-flight particles under HVOF condition by thermal radiation method 显示文摘 | Wu Tao Li Chengxing Li Changjiu | 1999 | Materials Protection1999,32,10: | 1 |
| 7 | Regio-and Stereoselective Synthesis of(Z)-3-Ylidenephthalides via H_(3)PMo1_(2)O_(40)-Catalyzed Cyclization of 2-Acylbenzoic Acids with Benzylic Alcohols显示文摘We report an exclusively tandem C—O and C—C bond forming beyond the esterification and cyclization reaction of 2-acylbenzoic acids with alcohols to regio-and stereoselective synthesis of the(Z)-3-ylidenephthalides.The reaction uses the nontoxic,inexpensive H_(3)PMo1_(2)O_(40) as catalyst and produces water as the sole by-product,making the reaction environmentally benign and sustainable.Moreover,this reaction features an eco-friendly reaction condition,facile scalability,and easy derivatization of the products to drugs and bioactive compounds.The mechanism studies and density functional theory calculations reveal that the appropriate acid catalyst is the key to the selectivity of this transformation. | Guoping Yang Ke Li Xiaoling Lin Yijin Li Chengxing Cui Shixiong Li Yuanyuan Cheng Yufeng Liu | 2021 | Chinese Journal of Chemistry2021,39,11: | 1 |
| 8 | Study of fouling organisms at Tuoji Island in the Bohai Channel显示文摘From June 1984 to May 1985, monthly and seasonal panel tests of fouling organisms were carried out on rafts at Tuoji Island. Seventy - three species were obtained. The occurring frequencies of the following species are all at least 30%: Ectocarpus confervoides, Polysiphonia urceolata, Tubularia mesembryanthmum, Cfytia edwardsi, Tubulipora pulchra, Celleporella hyalina, Mytilus edulis, Hiatella arctica, Caprella acanthogaster, Corophium crassicome, Jassa cf.falcata and Podocerus cf . inconspicuus. Large or calcareous species are not dominant ones. The wet weight is comparatively light, the yearly wet weight being 9.12 kg m-2. Attaching seasons of major species are from June to October and no bio - attachment occurs between January and April. Fouling organisms at Tuoji Island differ rather greatly from those in the harbours along the continental coast, showing the charcteristics of fouling organisms in the northern island harbours of China. | Wang Jianjun, Huang Zongguo, Li Chuanyan, Zheng Chengxing Lin Sheng Third Institute of Oceanography, State Oceanic Administration, Xiamen, China | 1989 | Acta Oceanologica Sinica1989,8,2: | 0 |
| 9 | An ecological study on the fouling organisms in Yantai Harbour显示文摘Yantai Harbour (37°33′15″N , 121°23′42″E) is situated at the north coast of Shandong Peninsula and is a large fishing and commercial port of North China. From June 1983 to May 1984, a yearly panel test on fouling organisms was carried out at the non-fixed jetties in the inner and outer harbour. The test method was according to 'the Marine | Li Chuanyan, Huang Zongguo, Wang Jianjun, Zheng Chengxing, Lin ShengThird Institute of Oceanography, State Oceanic Administration,Xiamen 361005, China | 1991 | Acta Oceanologica Sinica1991,10,4: | 0 |
| 10 | Hot Tearing Behavior of Mg-Gd-Y-X Alloys显示文摘Mg-Gd-Y-Zr alloy castings are widely used in the aerospace field owing to their high strength and excellent creep resistance.The castability of these alloys is also an important consideration for engineering application.Thus,the hot tearing susceptibilities(HTSs)of Mg-10Gd-1Y-1Zn-0.5Zr(VW91)alloy and Mg-10Gd-2Y-1Zn-0.5Zr(VW92)alloy are investigated with a constrained rod casting(CRC)mold.The microstructures and fracture surface are characterized by optical microscope and scanning electron microscope.The results unveil that the HTS of VW92alloy is lower than that of VW91 alloy.The microstructures indicate that obvious tears can be observed in VW91 alloy,while the tears in VW92 alloy are tiny.The tear feeding and healing by eutectic are also observed in VW91 and VW92alloys.Therefore,the lower hot tearing susceptibility of VW92 alloy is mainly attributed to the high amount of eutectic which feeds and heals tears.Besides,the effects of the coefficient of thermal expansion(CTE)and the fluidity of VW91 and VW92 alloys on their HTSs are discussed. | LIAO Jinge LI Chengxing ZOU Wenbing KANG Jing SONG Jiangfeng JIANG Bin ZHAO Hua YANG Zhiyuan PAN Fusheng | 2022 | 上海航天(中英文)2022,39,1: | 0 |
| 11 | The etching process and mechanism analysis of Ta-Sb2Te3 film based on inductively coupled plasma显示文摘Compared to the conventional phase change materials,the new phase change material Ta-Sb2Te3 has the advantages of excellent data retention and good material stability.In this letter,the etching characteristics of Ta-Sb2Te3 were studied by using CF4/Ar.The results showed that when CF4/Ar=25/25,the etching power was 600 W and the etching pressure was 2.5 Pa,the etching speed was up to 61 nm/min.The etching pattern of Ta-Sb2Te3 film had a smooth side wall and good perpendicularity(close to 90°),smooth surface of the etching(RMS was 0.51nm),and the etching uniformity was fine.Furthermore,the mechanism of this etching process was analyzed by X-ray photoelectron spectroscopy(XPS).The main damage mechanism of ICP etching in CF4/Ar was studied by X-ray diffraction(XRD). | Yongkang Xu Sannian Song Wencheng Fang Chengxing Li Zhitang Song | 2020 | Journal of Semiconductors2020,41,12: | 0 |
| 12 | Experimental verification of the potential of superhydrophobic surfaces in reducing audible noise on HVAC overhead line conductors显示文摘Overhead line conductors can generate audible noise across a wide frequency spectrum as a result of elevated electric fields at the conductor surface.Such fields are enhanced by the presence of surface defects,insects,water drops and pollution.Within this paper,the impact of a superhydrophobic coating on the audible noise produced by an overhead line conductor is examined.Noise levels from a conductor coated with a superhydrophobic coating were compared to those from a bare conductor in a semi-anechoic chamber.The conductors were energised at voltages to provide surface electric fields ranging from 6 kV/cm to 21 kV/cm(rms).With a continuous water spray system depositing droplets on the conductor surface,the frequency domain sound pressure level,overall sound pressure levels and corona discharge magnitude were measured.It is demonstrated that the use of a superhydrophobic coating reduced audible noise levels and corona discharge magnitude,especially at electric fields above 14 kV/cm.The image analysis suggests that the water drop size distribution and the position of surface droplets on the conductor circumference play an important role in the magnitude of audible noise. | Xu Zhang Ian Cotton Qi Li Simon MRowland Christopher Emersic Chengxing Lian Wenyuan Li | 2022 | High Voltage2022,7,4: | 0 |
| 13 | Design of an RFQ for the CAfe Project at IMP显示文摘An RFQ has been designed for the CAFe(Chinese Accelerator Facility for super-heavy Elements)project at IMP.The RFQ,which works at 162.5 MHz and whose design current is 20 pμA. | Li Chengxing Xu Xianbo Zhang Zhouli Huang Yulu Zhang Shengxue Wang Ruoxu | 2019 | IMP & HIRFL Annual Report2019,,1: | 0 |
| 14 | Cyclic mechanical stretch regulates MMPs and TIMPs expression in corneal fibroblasts显示文摘Laser in situ keratomileusis(LASIK)is a relatively new ophthalmic procedure in refractive surgery.It involves the use of a microkeratome to create a thin corneal flap followed by excimer laser ablation of the corneal stroma and repositioning of the flap.However,complications are bound to occur when a surgical procedure is performed with increasing frequency.In some cases,serious complications such as keratectasia occurred.Risk factors for corneal keratectasia include a thin cornea at baseline,thick corneal flap,excessive ablation,irregular corneal thickness,diverse ablation rates,preexisting keratoconus or form fruste keratoconus,and high intraocular pressure(IOP)~[1].It is evident from incisional refractive surgery that the cornea is not mechanically inert.The mechanical environment of the central corneal tissue is also altered un- | Chengxing Liu Pengfei Feng Xiaona Li Xiaojun Wang Weiyi Chen | 2013 | 医用生物力学2013,28,S1: | 0 |