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| 1 | The vertical structure and seasonal changes of atmosphere ozone and temperature at Zhongshan Station over East Antarctica显示文摘The vertical structure of the atmospheric ozone and temperature as well as the seasonal variations is presented by using ozone sounding data at Zhongshan Station over East Antarctica from February, 2008 to February, 2009. The results show that the heights of thermal tropopause and ozone tropopause are mostly the same with yearly mean 7.9 and 7.4 km separately above the station. There is obvious seasonal variation in the pressure and temperature of the tropopause, manifested by the clear one-wave pattern with an opposite phase. As the turning point of the tropopause temperature is visible in autumn and faint in spring and winter, the tropopause height can be better confirmed by utilization of the changes of ozone. Seasonal variation of the tropospheric ozone of vertical distribution is not clear, relative to stratosphere. In the spring, ozone in the low level of stratosphere lost seriously. The minimum partial ozone in 14 km was 1.57 MPa only and the maximum partial ozone occurred in the up level stratosphere. In the rest of the season the ozone increases with height rising in the low level of stratosphere. The evidence shows that ozone lost in spring is closely related with low temperature of polar night and the process of PSC photochemical destruction ozone in the stratosphere. From the vertical characteristics and seasonal variation of ozone and temperature, it is meaningful to understand formation and development of Antarctic ozone deletion. | BIAN LinGen LIN Zhong ZHANG DongQi ZHENG XiangDong LU LongHua | 2012 | Science China Earth Sciences2012,55,2: | 6 |
| 2 | Selective feeding of bay scallop Argopecten irradians on phytoplankton community revealed by HPLC analysis of phytopigments in Bohai Sea, China显示文摘Understanding the feeding selectivity on phytoplankton by shellfi sh is currently a big challenge. In order to investigate the feeding behavior of bay scallop ( Argopecten irradians ) on phytoplankton, we compared its compositions of phytopigments in digestive glands with those in the surrounding seawater, and conducted fi ve consecutive investigations between July and November 2016 in a bay scallop culture area along coast of Qinghuangdao City, northwest of the Bohai Sea, China. Phytopigments in four-size fractionated phytoplankton of seawater (micro-(20-200 μm);nano(L)-[10-20 μm];nano(S)-[2.7-10 μm], and pico-[<2.7 μm]) and digestive glands of A . irradians were examined to investigate the selective feeding of A . irradians . Results show that fucoxanthin and peridinin constituted the major part of taxonomically diagnostic carotenoids (TDCs) in the micro- and nano(L)-phytoplankton in seawater. Compared with total phytoplankton biomass of seawater (TPB, sum of the four sizes), a substantial decrease of fucoxanthin proportion to total DCs in digestive glands was observed while that of peridinin, 19′-butanoyloxyfucoxanthin, alloxanthin and 19′-hexanoyloxy-fucoxanthin showed an obvious increase when those pigments were mainly confi ned to micro-sized phytoplankton (20-200 μm). However, zeaxanthin and prasinoxanthin were mainly confi ned to nano(s)- and pico-phytoplankton, of which the proportions in digestive glands were usually lower in TPB. The contribution of lutein to total DCs in digestive glands (with an average of 7.23%) increased compared with TPB of seawater (with an average of 0.63%) during all fi ve sampling times. | JIANG Tao WANG Longhua ZHANG Fuchong FANG Xiao LU Lin ZHANG Jihong WANG Wei QU Keming CHAI Chao | 2019 | Journal of Oceanology and Limnology2019,37,5: | 4 |
| 3 | Compositions and Pressure-Temperature Conditions of Metamorphic Fluids Overprinting the Talate VMS Pb-Zn Deposit,Southern Altay,China显示文摘Talate Pb-Zn 存款,在扩大泥盆纪 Kelan 的 NW-SE 的东方定位了南部的 Altaides 的暴烈沉积的盆,发生在更低的泥盆纪更低的 Kangbutiebao 形成的上面的秒 lithological 节的变形岩石系列(D 1 k 12) 。Pb-Zn orebodies 由迟了的硫化物石英静脉层状、套印。二个不同矿化作用时期被识别:一个海底的暴烈的沉积呼气时期和一个变形热水的矿化作用时期。变形套印时期能进一步被划分成二个阶段:透镜状的石英静脉在绿泥石片岩和忍受矿石的地平线的 leptite 开发了的床上用品平行描绘的一个早阶段,和一个迟了的阶段由横切绿泥石片岩和 leptite 或巨大的 Pb-Zn 矿石的 pyrite-chalcopyrite-quartz 静脉代表了。在早变形的石英静脉的液体包括主要是公司 2-H2 O-NaCl 并且碳(有次要的水的包括的公司 2±CH4±N2) 包括。公司 2-H2 O-NaCl 包括有 294-368 ° C 的 homogenization 温度, T m,到 -60.5°C, T > h, 7.7 ~ 29.6 °C 的 CO2 ( 一致进液体) ,并且 5.5-7.4 wt% NaCl eqv 的咸度。碳的包括有 T m,到 -58.5°C, 和 T > h,到 20.6 °C 的 -4.2 的 CO2 。在迟了的硫化物石英静脉的液体包括被公司 2-H2 O-NaCl 和公司 2±CH4 包括。公司 2-H2 O-NaCl 包括有 T h, 142 ~ 360 °C 的小孩 , T m,到 -56.6°C, T > h,到 29.4 °C 的 -6.0 的 CO2 ( 一致进液体) 并且 2.4-16.5 wt% NaCl eqv 的咸度。碳的包括有 T m,到 -57.3°C, 和 T > h,到 28.7 °C 的 -27.0 的 CO2 。水的包括(L-V ) 有 T m,到 -1.3°C 和 T > h, 205 ~ 412 °C 的小孩 。套住公司 2-rich 液体包括的条件的磅(100-370 MPa, 250-368 °C ) 是可比较的与迟了 -- 到 regional 以后变态条件。公司 2-rich 液体,可能源于地区性的变态,涉及重做和主要矿石的金属丰富。把结果基于这些, Talate Pb-Zn 存款作为变形液体修改的 VMS 存款被分类。有 banded 和角砾岩结构的巨大的 Pb-Zn 矿石在与 extensional 联系的海底的暴烈的沉积呼气的早时期被开发 subduction 相关的背弧盆,和忍受 polymetallic 硫化物的石英静脉在与二叠三叠纪的大陆人碰撞有关的变形热水的重迭的迟了的时期被形成。 | ZHANG Hui XU Jiuhua CHENG Xihui GUO Xuji LIN Longhua YANG Rui BIAN Chunjing | 2015 | Acta Geologica Sinica(English Edition)2015,89,3: | 2 |
| 4 | MiR-20a Induces Cell Radioresistance by Activating the PTEN/PI3K/Akt Signaling Pathway in Hepatocellular Carcinoma显示文摘 | Yuqin Zhang Lin Zheng Yi Ding Qi Li Rong Wang Tongxin Liu Quanquan Sun Hua Yang Shunli Peng Wei Wang Longhua Chen | 2015 | International Journal of Radiation Oncology, Biol2015,,5: | 1 |
| 5 | Electrochemiluminescence Sensor for Cancer Cell Detection Based on H_(2)O_(2)-Triggered Stimulus Response System显示文摘A H_(2)O_(2)-triggered stimulus response electrochemiluminescence(ECL)sensor for sensitive detection of cancer cells using mesoporous silica nanoparticles(MSNs)has been proposed.ECL signal-generating molecules(Ru(phen)32+)were encap-sulated into phenylboronic acid group-functionalized MSNs(PBA-MSNs)porous and capped by polyhydroxy functioned Au nanoparticles(AuNPs)through the interaction of carbohydrate-boronic acid first.Brunauer-Emmett-Teller(BET)and transmission electron microscopy(TEM)were applied to characterize the materials.The proposed controlled release sensing platform shows approximately no leakage from the mesoporrs of MSNs after a long time of storage.Cancer cells are initially incubated with the functionalized MSNs and then treated with ascorbic acid to endogenously produce H_(2)O_(2).Arylboronic esters in the MSNs surface can be oxidized by the produced H_(2)O_(2),causing the releasing of the molecule from MSNs and increased ECL signal.This technique displayed an excellent measurement for the breast cancer cells’sensitive diagnosis with a detection limit of 208 cells/mL.The phenomenon suggests that this sensing platform may be potentially applied for breast cancer sensitive detection in the future. | Yu Chen Zhonghui Chen Lishan Fang Aibin Weng Fang Luo Longhua Guo Bin Qiu Zhenyu Lin | 2020 | Journal of Analysis and Testing2020,4,2: | 0 |
| 6 | Validation of total ozone data between satellite and ground-based measurements at Zhongshan and Syowa stations in Antarctica显示文摘We present validation between total ozone from satellite and ground-based observations of the Dobson and Brewer spectrometers and ozone radiosonde at Zhongshan and Syowa Antarctic research stations, for September 2004 to March 2009. Results show that mean bias error between Zhongshan (Syowa) and Ozone Monitor Instrument Total Ozone Mapping Spectrometer (OMI-TOMS) data are 0.06%±3.32% ( 0.44%±2.41%); between it and OMI Multi Axis Differential Optical Absorption Spectroscopy (OMI-DOAS) data, the error is 0.34%±4.99% ( 0.22%±4.85%). Mean absolute bias error values of OMI-TOMS data are less than those of OMI-DOAS. This means that total ozone of OMI-TOMS is closer to ground-based observation than that of OMI-DOAS. Comparison between direct observational total ozone of ground-based and integrated ozone from the ozone profile measured by ozone radiosonde shows that ozone amount calculated with the Solar Backscatter Ultraviolet (SBUV) method above balloon burst height is similar to corresponding Microwave Limb Sounder (MLS) data. Therefore, MLS data can be substituted with SBUV data to estimate ozone amount above that level. Mean bias error of the MLS ozone column is 2% compared with the ozonesonde column, with standard deviation within 9.5%. Comparison of different layers from ozone profiler and MLS data indicates that at the 215 hPa layer, the MLS ozone value is high, with relative deviation more than 20%. At the 100 hPa and 68 hPa layers, the MLS ozone value is also high. This deviation is mainly in spring, during Antarctic ozone hole appearance. In this period, at the height of severe ozone loss, relative deviation of MLS ozone values is especially large. | BIAN Lingen LIN Zhong ZHANG Dongqi ZHENG Xiangdong LU Longhua | 2012 | Advances in Polar Science2012,23,4: | 0 |