中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
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烟台夹河口外柱状沉积物还原性无机硫、活性铁的变化特征及其相互关系 期刊论文  OAI收割
海洋科学, 2018, 卷号: 42, 期号: 8, 页码: 90-97
作者:  
姜明;  赵国强;  李兆冉;  盛彦清
  |  收藏  |  浏览/下载:30/0  |  提交时间:2020/07/08
还原性无机硫  活性铁  深层柱状沉积物  硫化度  矿化度  Reduced inorganic sulfur  Reactive iron  Deep core sediments  Degree of pyritization  Degree of sulfidity  The distribution characteristics and coupling mechanism of reduced inorganic sulfur (RIS)and reactive iron in marine core sediments are closely related to the evolution of environment quality.In this study,an improved cold diffusion method and hydrochloric acid extraction method were applied to the acid-volatile sulfur (AVS),pyrite sulfur (CRS),elemental sulfur (ES),and reactive iron [Fe (Ⅱ)and Fe (III)] analyses.The distribution characteristics and coupling mechanism of S and Fe were investigated based on a core sediment 4 meters deep collected in the northern sea area of the mouth of Jiahe River,Yantai.The results showed that the RIS in sediments was dominated by CRS,followed by AVS and ES.The content of AVS presented a narrow range with depth,whereas the CRS and ES were higher at the top and bottom layers than the middle layer  reactive iron was dominated by Fe (II),which increased with depth,while Fe (Ⅲ)gradually decreased with depth.Most of the Fe (III)was reduced to the disssolved Fe(II),which was combined with the soluble H_2S of the sulfate-reducing bacteria to produce CRS and ES in the deep layer,resulting in their accumulation at the bottom of core sediments.Furthermore,this study showed that reactive iron was not a limiting factor for the accumulation of RIS with lower degree of pyritization and degree of sulfidity.  
Identification of a two-domain antifreeze protein gene in antarctic eelpout lycodichthys dearborni 期刊论文  iSwitch采集
Polar biology, 2009, 卷号: 32, 期号: 1, 页码: 35-40
作者:  
Zhang, Junfang;  Deng, Cheng;  Wang, Jianshe;  Chen, Liangbiao
收藏  |  浏览/下载:36/0  |  提交时间:2019/05/10
QCM-FIA with PGMA coating for dynamic interaction study of heparin and antithrombin III 期刊论文  OAI收割
BIOSENSORS & BIOELECTRONICS, 2005, 卷号: 21, 期号: 1, 页码: 121-127
作者:  
Zhang, HW;  Zhao, R;  Chen, ZY;  Shangguan, DH;  Liu, GQ
  |  收藏  |  浏览/下载:24/0  |  提交时间:2019/04/09
Qcm-fia with pgma coating for dynamic interaction study of heparin and antithrombin iii 期刊论文  iSwitch采集
Biosensors & bioelectronics, 2005, 卷号: 21, 期号: 1, 页码: 121-127
作者:  
Zhang, HW;  Zhao, R;  Chen, ZY;  Shangguan, DH;  Liu, GQ
收藏  |  浏览/下载:24/0  |  提交时间:2019/05/10
Developing of in-suit long trance profiler for testing slope error of aspherical optical Elements (EI CONFERENCE) 会议论文  OAI收割
ICO20: Optical Devices and Instruments, August 21, 2005 - August 26, 2005, Changchun, China
Zhou C.; Li H.; Chen C.; Zhou C.; Qian S.
收藏  |  浏览/下载:42/0  |  提交时间:2013/03/25
Profile error of super smooth surface of optical elements at X-ray/EUV in synchrotron radiation (SR) light beam line is described as slope error of them generally. The Long Trace Profiler (LPT) is used for testing surface slope error of SR optical elements in world generally. It is requisite to use In-suit LTP measuring surface thermal distortion of SR optical elements with high heat under high bright SR source. Authors design an In-suit LTP by means of co-path interferometer with pencil light beam. The instrument not only can be used for testing slope error of mirrors in Lab. also in situation test the distortion of mirror with high heat load at synchrotron light beam line. The device can be used to test various absolute surface figures of optical elements such as aspherieal  spherical and plane. It is needless standard reference surface. It is named by LTP-III. This paper describes its basic operating principle  optical system  mechanical constructions  DC serve motor control system  array detector  data acquisition system and computer system for controlling and data analysis of LTP-III. The Instrument has advantages of high accuracy  low cost  multifunction and wide application. Length of surface measured of optical element accuracy is 0.04 arcsec.