中国科学院机构知识库网格系统: 检索

Record Low Arctic Stratospheric Ozone in Spring 2020: Measurements of Ground-Based Differential Optical Absorption Spectroscopy in Ny-Ålesund during 2017-2021 期刊论文 OAI收割
REMOTE SENSING, 2023, 卷号: 15
作者: Li, Qidi; Luo, Yuhan; Qian, Yuanyuan; Dou, Ke; Si, Fuqi

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收藏 | 浏览/下载：33/0 | 提交时间：2023/11/17

Arctic ozone depletion differential optical absorption spectroscopy vertical column density low temperature

Ultraviolet Two-Dimensional Non-Dispersive Imaging of SO2 Column Density in Power Plant Plume 期刊论文 OAI收割
SPECTROSCOPY AND SPECTRAL ANALYSIS, 2020, 卷号: 40
作者: Zhang Ying-hua; Li Ang; Xie Pin-hua; Huang Ye-yuan; Hu Zhao-kun

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收藏 | 浏览/下载：25/0 | 提交时间：2020/11/26

Slant column density Gauss diffusion Sulfur dioxide Filter

Study of Tropospheric NO2 VCD from August 2013 to July 2014 with Ground-Based MAX-DOAS in Hefei and Comparison with OMI Observation 期刊论文 OAI收割
SPECTROSCOPY AND SPECTRAL ANALYSIS, 2017, 卷号: 37, 期号: 4, 页码: 1042-1047
作者: Mou Fu-sheng; Li Ang; Xie Pin-hua; Wang Yang; Zhang Jie

收藏 | 浏览/下载：25/0 | 提交时间：2018/07/27

Max-doas No2 Vertical Column Density

Spatio-temporal Distributions of Tropospheric NO2 over oases in Taklimakan Desert, China SCI/SSCI论文 OAI收割
2015
作者: Qi Y.

收藏 | 浏览/下载：40/0 | 提交时间：2015/12/09

NO2 vertical column density ozone monitoring instrument (OMI) soil biogenic NO emission arid area agricultural management ozone monitoring instrument fertilized fields satellite data emissions n2o retrieval savanna omi

自由手写汉字识别方法研究 学位论文 OAI收割
工学博士, 中国科学院自动化研究所: 中国科学院大学, 2013
作者: 邵允学

收藏 | 浏览/下载：66/0 | 提交时间：2015/09/02

自由手写汉字识别字符图像归一化视觉词密度快速自产生投票自适应关键区域分析多列AdaBoost unconstrained handwritten Chinese character recognition character image normalization visual word density fast self-generation voting adaptive critical region analysis multi-column AdaBoost

Comparison of NO2 Slant Columns Between Two Ground-Based MAX-DOAS 期刊论文 OAI收割
SPECTROSCOPY AND SPECTRAL ANALYSIS, 2012, 卷号: 32
作者: Xu J(徐晋); Xie PH(谢品华); Si FQ(司福祺); Li A(李昂); Dou K(窦科)

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收藏 | 浏览/下载：25/0 | 提交时间：2020/10/26

SURFACE OZONE DEPLETION Multi axis differential optical absorption spectroscopy Differential slant column density Comparison

(12)CO, (13)CO and C(18)O observations along the major axes of nearby bright infrared galaxies 期刊论文 OAI收割
RESEARCH IN ASTRONOMY AND ASTROPHYSICS , 2011, 卷号: 11, 期号: 7, 页码: 787-810
Tan Qing-Hua; Gao Yu; Zhang Zhi-Yu

收藏 | 浏览/下载：22/0 | 提交时间：2012/08/07

DENSE MOLECULAR GAS STAR-FORMATION SPIRAL GALAXIES CARBON-MONOXIDE CO SURVEY ULTRALUMINOUS GALAXIES PHYSICAL CONDITIONS IRREGULAR GALAXIES GALACTIC-CENTER COLUMN DENSITY

Optical fiber transmission of Q-switdied Nd:YAG pulses of 10MW peak power: Mechanism of damage to the fiber (EI CONFERENCE) 会议论文 OAI收割
2nd International Symposium on Advanced Optical Manufacturing and Testing Technologies - Advanced Optical Manufacturing and Testing Technologies, November 2, 2005 - November 5, 2005, Xian, China
作者: Wang L.; Zhang Y.; Chen W.; Tang Y.; Wang L.

收藏 | 浏览/下载：31/0 | 提交时间：2013/03/25

This paper presents theoretical analysis and experiment results of four different fibers transmitting 10MW peak power Nd: YAG laser pulse. The main factors limiting to optical fiber transmission of high power laser pulse is pointed including air breakdown at focus area and surface damage of optical fiber. The theory of air breakdown and the fiber coupling conditions is described briefly. The results of study to the transmission properties and damage conditions are presented on the basis of four different types of optical fibers. The results of the experiments are further analyzed in the aspects of transmitting efficiency air breakdown and surface damage. The local and foreign optical fibers with plastic-cladding and silica-cladding and step- index and graded- index fibers are tested separately in the experiments. The experiments showed that the imported fibers are able to transmit up to 10MW peak power laser pulse with no any visible damage while energy density at the fiber output end surface is 3.54GW/cm2. For local fibers damage on the input surface of both plastic-cladding and silica-cladding step-index fibers was found obviously. The column damage to the graded index fiber was also found and investigated in the research. Damage mechanisms of fiber at high peak power laser pulses are summarized. High quality finishing of fiber end surface will improve damage threshold tremendously. The conclusion of the study is that transmitting Q-switched Nd:YAG pulses of 10MW peak power is feasible for the domestically made fibers if their end surfaces are properly processed.

The total column densities and fractional abundances of CH3CN, CH3OH, HCOOCH3 and (CS)-C-13 in W51 cores 期刊论文 OAI收割
SCIENCE IN CHINA SERIES G-PHYSICS MECHANICS & ASTRONOMY, 2005, 卷号: 48, 期号: 2, 页码: 158-167
作者: Pei, CC; Ma, HJ; Qin, Z; Bo, L

收藏 | 浏览/下载：16/0 | 提交时间：2016/09/23

massive star formation interstellar molecular lines column density fractional abundance

The total column densities and fractional abundances of CH3CN, CH3OH, HCOOCH3 and (CS)-C-13 in W51 cores 期刊论文 OAI收割
SCIENCE IN CHINA SERIES G-PHYSICS MECHANICS & ASTRONOMY, 2005, 卷号: 48, 期号: 2, 页码: 158-167
作者: Pei, CC; Ma, HJ; Qin, Z; Bo, L

收藏 | 浏览/下载：16/0 | 提交时间：2016/09/23

massive star formation interstellar molecular lines column density fractional abundance