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Measurements of suspended particulate matter with laser in-situ scattering and transmissometry in the Jiaozhou Bay in China

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Acta Oceanologica Sinica 2007年第1期26卷 55-65页

作者： WEI Jianwei SHI Xuefa fang xisheng ZHANG Weibin First Institute of Oceanography State Oceanic Administration Qingdao 266061 China Key Laboratory of Marine Sedimentology and Envrionmental Geology of State Oceanic Administration First Institute of Oceanography State Oceanic Administration Qingdao 266061 China

A laser in-situ scattering and transmissemetry probe （LISST - 100） was used to estimate the spatial variations of suspended particle （aggregate） distribution, volume concentration and beam attenuation in the Jiaozhou Bay, Qingdao, China on 18 July 2003. One study site was located at the mouth （Sta. J1 ）, with the other being within the inner bay （Sta. J2）. Measurements of total suspended matter （TSM） and chlorophyll fluorescence and sampling of bottom sediments were carried out simultaneously. On the basis of the field data, the in-situ particle effective density, settling velocity and flux, and particle projected surface area （PSA） were estimated. The results demonstrate that both profiles have similar particle size distributions from surface to bottom within the water columns. Mean particle diameters for Stas J1 and J2 are 38 - 74 and 1 - 20 μm, respectively, particles within these ranges dominate over the particulate components. Suspended particle volume concentrations increase with water depth, with spikes near the bottom. At Sta. J1, the mean size of bottom sediments and those of suspended particles at 10.8 m below the water surface are almost the same, as well as their size distributions. This observation suggests that a special affinity exists between bottom sediment and suspended particles. In addition, the estimates show that the effective density, settling velocity and flux are higher in the innet bay. Beam attenuation coefficient correlates well with the volume concentration, positively. It is inferred that the optical scattering was mostly caused by 1 - 250 μm components, among which the particles finer than 20 μm dominate the beam attenuation. The PSA appears a proxy for the leaving reflectance estimation.

关键词： suspended particle size distribution beam attenuation LISST - 100 Jiaozhou Bay

Clay mineral distribution characteristics of surface sediments in the South Mid-Atlantic Ridge

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Journal of Oceanology and Limnology 2023年第3期41卷 897-908页

作者： Qiannan HU Chuanshun LI Baoju YANG xisheng fang Huahua LÜ Xuefa SHI Jihua LIU Key Laboratory of Marine Geology and Metallogeny First Institute of OceanographyMinistry of Natural ResourcesQingdao 266061China Laboratory for Marine Geology Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China

Clay minerals are usually considered as important indicators to identify sources in both terrigenous and marine *** particular,clay minerals in metalliferous sediments(MS)have long been studied in global oceans except in South Mid-Atlantic Ridge(SMAR)due to limited ***,32 MS and 34 non-MS(NMS)samples were analyzed to clarify the distribution characteristics and mineral compositions of clay *** the sediments were collected along the SMAR between 12°S and 27°*** removal of organic matter and carbonate,clay fractions(<2μm)were investigated by Xray diffraction(XRD)*** show that clay mineral assemblages of surface MS consist dominantly of smectite,less abundant illite,chlorite,and kaolinite in average weight percentage of 30%,21%,18%,and 16%,*** the other hand,clay mineral assemblages in the NMS consist mainly of illite,less abundant kaolinite,chlorite,and very scarce smectite in average weight percentage of 47%,29%,24%,and 0.2%,*** clay fractions in MS are mainly composed of amorphous or poorly crystallized Fe/Mn oxyhydroxides,clay mineral,quartz,and ***,the counterparts in the NMS are mainly composed of well-crystallized clay minerals,quartz,and plagioclase without the presence of Fe/Mn *** is suggested that most of the illite,kaolinite,and chlorite in both MS and NMS are likely aeolian dust in origin from South Africa *** addition,the abundance of kaolinite dominates the clay mineral assemblage at low latitudes,where the intensive chemical weathering of continental source rocks facilitating the formation of *** terms of smectite,it is indicated of authigenic origin in consideration of only smectite is available in several MS and the absence in ***,the MS samples with only smectite available are always accompanied by ***,it is assumed that most of smectite occurred in studied area is the results of interaction between hydrothe

关键词： metalliferous sediment South Mid-Atlantic Ridge(SMAR) clay mineral smectite

Clay minerals in Arctic Kongsfjorden surface sediments and their implications on provenance and paleoenvironmental change

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Acta Oceanologica Sinica 2018年第5期37卷 29-38页

作者： SHI Fengdeng SHI Xuefa SU Xin fang xisheng WU Yonghua CHENG Zhenbo YAO Zhengquan School of Ocean Sciences China University of Geosciences (Beijing) Key Laboratory of State Oceanic Administration for Marine Sedimentology and Environmental Geology The First Institute of OceanographyState Oceanic Administration Laboratory for Marine Geology Qingdao National Laboratory for Marine Science and Technology

Kongsfjorden is a typical fjord on the edge of the ice cap of the Arctic Svalbard-Barents Sea. Its inner bay is connected with a modern glacier front along the direction of the fjord axis with a significant gradient change in the parameters of hydrology, sedimentation, and biology. In summer, ice and snow melt-water and floating ice collapse continuously and thus transport the weathering products on the surrounding land into the sea. Thus Kongsfjorden is regards as a natural laboratory for the study of unique sedimentation in polar fjords under modern glacial-sea water conditions. In this study, fifty-two surface sediments were collected in Kongsfjorden for clay mineral analysis to study the sediment source and sediment-transport process. Our results indicate that clay minerals in the surface sediments from Kongsfjorden are mainly composed of illite, chlorite, and kaolinite, and no smectite is found. Rocks from different periods exposed extensively in the surrounding areas of Kongsfjorden provide an important material basis for clay minerals in the Kongsfjorden. Kaolinite may be mainly derived from the fluvial deposits, weathered from reddish sandstones and conglomerates during the Carboniferous *** is mainly derived from Proterozoic low-grade and medium-grade metamorphic phyllite, mica schist, and gneiss. While chlorite is mainly from Proterozoic low-grade metamorphic phyllite and mica schist. In the direction from the fluvio-glacial estuary to the sea of the glacier front of Kongsfjorden, illite increase gradually,and the content of kaolinite declines gradually. However, the change pattern of chlorite is insignificant, which may be related to the provenance. Kongsfjorden detritus is mainly transported by the fluvio-glacial streams and icebergs into the sea and deposited in the inner bay. Coarse sediments are rapidly deposited in the glacier front,estuary, and near-shore areas. Clay fraction begins to deposit significantly by 200–400 m after flowing into

关键词： Arctic Pole Kongsfjorden clay mineral provenance sedimentation

化疗联合NKG2A抑制剂抗头颈部鳞状细胞癌作用的研究

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广州医药 2024年第8期55卷 860-868页

作者：方喜生刘霞王秀艳彭倩吕琳刘国龙华南理工大学附属第二医院(广州市第一人民医院)肿瘤科广东广州510180

目的研究靶向NKG2A抑制剂抗头颈部鳞状细胞癌(HNSCC)的作用。方法应用GEO和TCGA数据库分析NKG2A及其配体HLA-E单细胞表达情况、与患者预后以及免疫微环境的相关性。构建HNSCC皮下抑制瘤模型,流式细胞技术检测化学治疗(化疗)对免疫检测点... 详细信息

目的研究靶向NKG2A抑制剂抗头颈部鳞状细胞癌(HNSCC)的作用。方法应用GEO和TCGA数据库分析NKG2A及其配体HLA-E单细胞表达情况、与患者预后以及免疫微环境的相关性。构建HNSCC皮下抑制瘤模型,流式细胞技术检测化学治疗(化疗)对免疫检测点NKG2A表达的影响。动物实验验证NKG2A抑制剂以及NKG2A抑制剂联合多西他赛化疗的抗肿瘤作用。结果NKG2A(KLRC1)主要表达在NK细胞,少量表达在T淋巴细胞。HNSCC肿瘤高表达NKG2A/HLA-E(P<0.01),与患者不良预后密切相关;肿瘤微环境中NKG2A/HLA-E与多个免疫细胞浸润以及免疫检测点表达密切相关(P<0.01)。动物实验显示化疗能上调T、B淋巴细胞表达免疫检查点NKG2A的表达水平(P<0.01);化疗的基础上联合NKG2A抑制剂能更有效地介导抗肿瘤作用(P=0.013)。结论化疗基础上联合NKG2A抑制剂能更有效地介导抗肿瘤作用,为探索HNSCC临床新策略提供实验和理论基础。

关键词：头颈部鳞状细胞癌 NKG2A抑制剂化疗抗肿瘤作用

Clay mineral composition and their sources for the fluvial sediments of Taiwan Residents rivers

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Chinese Science Bulletin 2012年第6期57卷 673-681页

作者： LI ChuanShun SHI XueFa KAO ShuhJi CHEN MinTe LIU YanGuang fang xisheng LUE HuaHua ZOU JianJun LIU ShengFa QIAO ShuQing First Institute of Oceanography State Oceanic AdministrationQingdao 266061China Research Center for Environmental Changes Academia SinicaTaipei 11529China Institute of Applied Geosciences Taiwan Ocean UniversityKeelung 20224China

Located at the collision boundary between the Philippine Sea Plate and the Eurasian Continental Plate,the island of Taiwan is generally recognized as an important example in the MARGINS Program Science Plan and "source-to-sink" research because of its high tectonic activity,heavy rainfall and unique *** suspended sediment loads are transported to the adjacent ocean by Taiwan Residents rivers every year,making Taiwan an important source of sediments into the adjacent seas and a natural laboratory for studying the systemic movement of fluvial sediments from source to sink.A detailed study on the clay mineral composition of surface sediments collected from the drainage basins of 12 Taiwan Residents rivers using X-ray diffraction methods was *** results indicated that the clay mineral assemblages consisted dominantly of illite(approximately 73%) and chlorite(approximately 24%),with lesser abundances of kaolinite(approximately 3%) and even lower levels of smectite from the Danshuei River sediments in northwestern *** Jhuoshuei River sediments from western Taiwan contained clay mineral assemblages that consisted of illite(approximately 75%) and chlorite(approximately 25%),but they lacked kaolinite and *** southwestern Taiwan,the clay mineral assemblages were dominated by illite(approximately 75%) and chlorite(approximately 23%),but had a low abundance of kaolinite(generally < 2%) and no *** clay mineral assemblages in eastern Taiwan are obviously different from those in western parts of the *** most noticeable difference is that the average abundance of chlorite in the Hualien River from eastern Taiwan was the highest(approximately 48%) of all the Taiwan Residents *** concluded that,in general,the clay mineral assemblages in Taiwan Residents rivers were mainly composed of illite and chlorite with kaolinite and smectite being scarce,and these trends are different from those in China's mainland *** clay miner

关键词：河流沉积物粘土矿物矿物组成台湾岛 X射线衍射方法矿物组合表层沉积物菲律宾海板块

Records of the East Asian winter monsoon from the mud area on the inner shelf of the East China Sea since the mid-Holocene

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Chinese Science Bulletin 2010年第21期55卷 2306-2314页

作者： LIU ShengFa SHI XueFa LIU YanGuang QIAO ShuQing YANG Gang fang xisheng WU YongHua LI ChaoXin LI XiaoYan ZHU AiMei GAO JingJing Institute of Oceanology Chinese Academy of Sciences Qingdao 266071 China Key Laboratory of Marine Sedimentology and Environmental Geology First Institute of Oceanography State Oceanic Administration Qingdao 266061 China Graduate University of Chinese Academy of Sciences Beijing 100049 China

AMS14C dating and analysis of grain size,major elements and clay minerals were applied to Core MZ01 from the mud area on the inner shelf of the East China *** on the environmentally sensitive grain size,clay mineral and major element assemblages,the history of the East Asia winter monsoon since the mid-Holocene could be *** three proxies,mean grain size(>9.71μm),chemical index of alteration(CIA)and ratio of smectite to kaolinite in particular,show similar fluctuation patterns. Furthermore,10 extreme values corresponding to the contemporary cooling events could be recognized since the mid-Holocene;these extreme values are likely to have been caused by the strengthening of the East Asia winter *** cooling events correlated well with the results of theδ18O curves of the Dunde ice core and GISP2,which therefore revealed a regional response to global climate *** stages of the East Asia winter monsoon were identified,i.e.8300-6300 a BP,strong and unstable;6300-3800 a BP,strong but stable;3800-1400 a BP,weak and unstable;after 1400 a BP,weak but stable.

关键词：东亚冬季风中全新世 Sea 内陆架中期中国亚洲面积

Mineralogical study of surface sediments in the western Arctic Ocean and their implications for material sources

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Advances in Polar Science 2014年第3期25卷 192-203页

作者： DONG Linsen SHI Xuefa LIU Yanguang fang xisheng CHEN Zhihua WANG Chunjuan ZOU Jianjun HUANG Yuanhui The First Institute of Oceanography SOA Qingdao 266061 China The First Institute of Oceanography SOA

Mineralogical analysis was performed on bulk sediments of 79 surface samples using X-ray diffraction. The analytical results, combined with data on ocean currents and the regional geological background, were used to investigate the mineral sources. Mineral assemblages in sediments and their distribution in the study area indicate that the material sources are complex. （1） Feldspar is abundant in the sediments of the middle Chukchi Sea near the Bering Strait, originating from sediments in the Anadyr River carried by the Anadyr Current. Sediments deposited on the western side of the Chukchi Sea are rich in feldspar. Compared with other areas, sediments in this region are rich in hornblende transported from volcanic and sedimentary rocks in Siberia by the Anadyr Stream and the Siberian Coastal Current. Sediments in the eastern Chukchi Sea are rich in quartz sourced from sediments of the Yukon and Kuskokwim rivers carried by the Alaska Coastal Current. Sediments in the northern Chukchi Sea are rich in quartz and carbonates from the Mackenzie River sediments. （2） Sediments of the southern and central Canada Basin contain little calcite and dolomite, mainly due to the small impact of the Beaufort Gyre carrying carbonates from the Canadian Arctic Islands. Compared with other areas, the mica content in the region is high, implying that the Laptev Sea is the main sediment source for the southern and central Canada Basin. In the other deep sea areas, calcite and dolomite levels are high caused by the input of large amounts of sediment carried by the Beaufort Gyre from the Canadian Arctic Islands （Banks and Victoria）. The Siberian Laptev Sea also provides small amounts of sediment for this region. Furthermore, the Atlantic mid-water contributes some fine-grained material to the entire deep western Arctic Ocean.

关键词： X-ray diffraction western Arctic Ocean minerals surface sediments sources

纤芯拼接区的传输特性及其在单模定向耦合器中的应用

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光学学报 1986年第1期6卷 42-48页

作者：方锡生茅仲明黎滨洪上海交通大学电子工程系

本文从一阶微扰理论求得纤芯互相接触的光纤定向耦合器耦合区的传输特性.运用所得到的传输特性及由模式激发理论,计算了强耦合的单模光纤定向耦合器的耦合量.实测结果与理论计算吻合.

关键词：定向耦合器耦合区纤芯单模不可约模激光模传输特性

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大庆油田地面建设信息化智能化实践与思考

油气田地面工程 2023年第3期42卷 1-6,10页

作者：方西盛大庆油田有限责任公司黑龙江省大庆市163000

大庆油田地面建设项目具有投资大、类别多、地域广、工期紧、施工环境复杂等特点,违章作业时有发生,不易监管,施工现场安全、质量、进度很难得到有效保证。为发挥标准化、信息化、数字化等技术对主营业务的支撑作用,构建了大庆油田“数... 详细信息

大庆油田地面建设项目具有投资大、类别多、地域广、工期紧、施工环境复杂等特点,违章作业时有发生,不易监管,施工现场安全、质量、进度很难得到有效保证。为发挥标准化、信息化、数字化等技术对主营业务的支撑作用,构建了大庆油田“数字化项目管理+数字化移交+智慧化施工现场管理”的地面建设信息化管理模式,组织开发建设了基建管理系统、智慧工地系统、数字化交付系统,三者之间实现系统集成、数据共享,实现了业务管理上的互相支撑。基建管理系统覆盖油气田地面建设全过程,满足项目协同管理及辅助决策;智慧工地系统通过现场部署视频监控、智能感知等终端设备,实现对施工现场实时监管,及时反映现场施工情况;数字化交付系统通过数字化移交关联设计、采购、施工各阶段工程信息,构建站场数字孪生体。新管理模式对业务协同、多方联动、提质增效、合规精细管理作用突出。

关键词：油气田地面建设基建管理智慧工地数字化交付

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