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Chinese Academy of Sciences Institutional Repositories Grid
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CAS IR Grid
机构
地理科学与资源研究所 [4]
长春光学精密机械与物... [2]
青藏高原研究所 [1]
青海盐湖研究所 [1]
寒区旱区环境与工程研... [1]
采集方式
OAI收割 [8]
iSwitch采集 [1]
内容类型
期刊论文 [4]
SCI/SSCI论文 [3]
会议论文 [2]
发表日期
2024 [1]
2016 [3]
2012 [2]
2010 [1]
2009 [2]
学科主题
地理学::自然地理学 [1]
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Rate of vegetation change in southeast China during the Holocene and its potential drivers
期刊论文
OAI收割
REVIEW OF PALAEOBOTANY AND PALYNOLOGY, 2024, 卷号: 322, 页码: 10
作者:
  |  
收藏
  |  
浏览/下载:21/0
  |  
提交时间:2024/04/19
Pollen
Rate of change
Vegetation
Southeast China
Holocene
Human impact
An experimental study on the influence of cooling rates on salt expansion in sodium sulfate soils
期刊论文
iSwitch采集
COLD REGIONS SCIENCE AND TECHNOLOGY, 2016, 卷号: 124, 页码: 67-76
作者:
Lai, Yuanming
;
Wan, Xusheng
;
Zhang, Mingyi
收藏
  |  
浏览/下载:32/0
  |  
提交时间:2019/10/09
Sodium sulfate saline soil
Salt expansion
Supersaturation ratio
The rate of crystal growth
Phase change
Qinghai-Tibet plateau
Mid-late Pleistocene glacial evolution in the Grove Mountains, East Antarctica, constraints from cosmogenic Be-10 surface exposure dating of glacial erratic cobbles
期刊论文
OAI收割
QUATERNARY SCIENCE REVIEWS, 2016, 卷号: 145, 期号: 0, 页码: 71-81
作者:
Dong, GC (Dong, Guocheng)
;
Huang, FX (Huang, Feixin)
;
Caffee, MW (Caffee, Marc W.)
;
Huang, FX
;
Yi, CL (Yi, Chaolu)
  |  
收藏
  |  
浏览/下载:31/0
  |  
提交时间:2017/09/26
Glacial HisTories From The East Antarctic Ice Sheet (Eais) Provide Keys To UnderstAndIng Correlations Between The Eats And Global Climate. They Are Especially Helpful In The Assessment Of Global Sea Level Change
And As a Means Of Quantifying The Magnitude Of pAst Glacial Activity And The RAte At Which Ice Responded To climAte Change. Given The Significance Of Eais Glacial hisTories
It Is Imperative That More Glacial Chronologic Data For thIs Region Be Obtained
Especially For The Mid-to-lAte Pleistocene. We Report Cosmogenic Be-10 Surface Exposure DAtIng Results From Glacially Transported Cobbles Embedded In Blue-ice moraIne MAterial At Mount hardIng
The Grove Mountains
Eais. Forty Exotic Cobbles Sampled AlOng Two PrOfiles (a And b) On This Blue-ice MoraIne Present Apparent Exposure-ages RangIng From 7.2 To 542.2 Ka. We Explore This Scattered Dataset By UsIng PrIncipal compOnent Analysis (Pca) To Identify Statistically Significant Trends In The Data. We Identify a correlatiOn betWeen Exposure-age And Distance Of The Cobbles From Mount hardIng. In prOfile a
Cobbles Further From Mount HardIng Yield Older Exposure-ages Than Those That Are Relatively Close. In Profile b
Cobbles Closer To Mount HardIng Are Found To Have Relatively Older Exposure-ages. In Term Of Glacial hisTory We Suggest That The Direction Of Ice Flow Changed durIng The Period From Similar To 60 To 200 Ka
And That Multiple Glacial Fluctuations Occurred In The Mid-late Pleistocene. (c) 2016 Elsevier Ltd. All Rights Reserved.
Close correlation between global air temperature change and polar motion during 1962-2013
SCI/SSCI论文
OAI收割
2016
作者:
Huang M.
;
Zhu, L.
;
Gong, H.
;
Shao, Y. P.
  |  
收藏
  |  
浏览/下载:16/0
  |  
提交时间:2017/11/09
temperature trend
polar motion
climate change
rate of temperature
change
el-nino
excitation
oscillation
Chronology of Holocene sediments from the archaeological Salawusu site in the Mu Us Desert in China and its palaeoenvironmental implications
期刊论文
OAI收割
JOURNAL OF ASIAN EARTH SCIENCES, 2012, 卷号: 45, 页码: 247-255
作者:
Liu, Kai
;
Lai, ZhongPing
  |  
收藏
  |  
浏览/下载:20/0
  |  
提交时间:2018/06/20
Luminescence Dating Of Lacustrine Deposits
Palaeolithic Salawusu Site
Mu Us Desert In chIna
Holocene Climatic Change
Incision Rate Of Salawusu River
Simulation of the Decadal Permafrost Distribution on the Qinghai-Tibet Plateau (China) over the Past 50 Years
SCI/SSCI论文
OAI收割
2012
Cheng W. M.
;
Zhao S. M.
;
Zhou C. H.
;
Chen X.
收藏
  |  
浏览/下载:23/0
  |  
提交时间:2014/12/25
permafrost distribution
Qinghai-Tibet Plateau
response model
altitudinal model
mean annual air temperature
vertical lapse rate of
temperature
cryospheric change
model
interpolation
degradation
canada
yukon
Recent Carbon Accumulation in Changbai Mountain Peatlands, Northeast China
SCI/SSCI论文
OAI收割
2010
Bao K. S.
;
Yu X. F.
;
Jia L.
;
Wang G. P.
收藏
  |  
浏览/下载:30/0
  |  
提交时间:2012/06/08
Peatlands
carbon pool
recent rate of carbon accumulation (RERCA)
(210)Pb dating
climate change research
Changbai Mountains
northeast
China
organic-matter accumulation
term nutrient accumulation
ombrotrophic
peat bogs
climate-change
rates
ecosystem
holocene
finland
mires
everglades
Study on experiment of grinding SiC mirror with fixed abrasive (EI CONFERENCE)
会议论文
OAI收割
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, November 19, 2008 - November 21, 2008, Chengdu, China
作者:
Wang X.
;
Zhang X.-J.
;
Wang X.
;
Wang X.
收藏
  |  
浏览/下载:24/0
  |  
提交时间:2013/03/25
A brand-new technology for manufacturing SiC reflecting mirror that is different from the traditional method is adopted
which is called as fixed abrasive surfacing technology. Not only the new method achieves better mirror quality with bigger diamond in diameter quickly
but also because of the fixed motion between the abrasive and workpiece and it will be good for surface finishing. During experiment
material removal characteristic which is on SiC under certain rotation speed and pressure by W7
W5
W3.5
W1.5 pellets has been tested. Through those removal curves
we come to a conclusion that the technology not only has a higher removal rate
but also has much more stability. In addition
the surface roughness experiment is mentioned. In the first stage
we achieved a mirror with surface roughness 42.758nm rms with W7 pellets. The surface roughness is descending as we change pellets with smaller diamond in diameter . At the end of experiment
a smooth surface with roughness 1.591nm rms has been achieved after using W1.5 pellets. Experiment results indicate that the technology which manufactures SiC reflecting mirror with fixed abrasive is able to replace the traditional slurry abrasive completely in certain finishing phase and also has a great foreground in application. 2009 SPIE.
A high-speed acquisition and processing system of the laser speckle signal on the magnetic fluid (EI CONFERENCE)
会议论文
OAI收割
International Symposium on Photoelectronic Detection and Imaging 2009: Laser Sensing and Imaging, June 17, 2009 - June 19, 2009, Beijing, China
作者:
Sun Y.
;
Sun Y.
;
Wan Q.-H.
收藏
  |  
浏览/下载:29/0
  |  
提交时间:2013/03/25
In order to achieve the dynamical detection and real-time analysis of the movement status of the magnetic fluid
according to the difficulties of the detection of the magnetic fluid
established a high-speed acquisition and processing system of laser speckle signal on the magnetic fluid. First of all
the FPGA (EP2C8T144C8N) drived the linear array CCD(TCD1501D) to scan in the corresponding time sequence given by the computer
collected the laser speckle interferometric image in rapid change on the surface of the magnetic fluid
which followed the movement of the magnetic fluid
and the signal collected by CCD was converted into the digital data through the high-speed A/D convertor and stored into the internal buffer FIFO of the FPGA
whose width and depth were designed by the user as required. Then
the FPGA sent the digital signal of the laser speckle interferometric images into the computer through the USB2.0 highspeed differential bus
whose transmission rate can reach 480Mb/s in theory. Finally
the distribution of the laser speckle on the magnetic fluid was messy and random
which carried certain information about the surface of the magnetic fluid
based on the theories of the statistic correlation and the subdivision of images
analysing and processing the laser speckle interferometric images
indirectly got the movement status of the magnetic fluid under the electromagnetic field. The experimental results show that: the High Speed Acquisition and Processing System has the advantage of full-court
non-contact
non-invasive
high-precision and high reliability and so on. The detection resolution of high speed acquisition and processing system is superior to 1m and the sample rate is 3Msps
which basically meets the requirements of the magnetic fluid movement state detection. 2009 SPIE.