中国科学院机构知识库网格系统: 检索

Secondary Formation and Impacts of Gaseous Nitro-Phenolic Compounds in the Continental Outflow Observed at a Background Site in South China 期刊论文 OAI收割
ENVIRONMENTAL SCIENCE & TECHNOLOGY, 2022, 卷号: 56, 期号: 11, 页码: 6933-6943
作者: Chen, Yi; Zheng, Penggang; Wang, Zhe; Pu, Wei; Tan, Yan

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收藏 | 浏览/下载：24/0 | 提交时间：2022/11/07

ATMOSPHERIC OXIDATION MECHANISM GAS-PHASE REACTIONS PARTICULATE NITRATED PHENOLS VOLATILE ORGANIC-COMPOUNDS NO3 RADICALS NITROAROMATIC COMPOUNDS LIGHT-ABSORPTION BROWN CARBON EQUILIBRIUM-CONSTANT KINETICS

Atmospheric measurements at Mt. Tai - Part I: HONO formation and its role in the oxidizing capacity of the upper boundary layer 期刊论文 OAI收割
ATMOSPHERIC CHEMISTRY AND PHYSICS, 2022, 卷号: 22, 期号: 5, 页码: 3149-3167
作者: Xue, Chaoyang; Ye, Can; Kleffmann, Jorg; Zhang, Chenglong; Catoire, Valery

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收藏 | 浏览/下载：30/0 | 提交时间：2022/11/07

NITROUS-ACID HONO CENTRAL EAST CHINA NORTH CHINA PHOTOENHANCED UPTAKE ORGANIC-COMPOUNDS URBAN ATMOSPHERE HUMIC-ACID GAS-PHASE JUNE 2006 NO2

Photodissociation of particulate nitrate as a source of daytime tropospheric Cl-2 期刊论文 OAI收割
NATURE COMMUNICATIONS, 2022, 卷号: 13, 期号: 1, 页码: 939
作者: Peng, Xiang; Wang, Tao; Wang, Weihao; Ravishankara, A. R.; George, Christian

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收藏 | 浏览/下载：25/0 | 提交时间：2022/11/07

GAS-PHASE NO2 MOLECULAR CHLORINE SEA-SALT NITRYL CHLORIDE NITROUS-ACID AQUEOUS-SOLUTION RURAL SITE PHOTOLYSIS OZONE CHEMISTRY

No pulsed radio emission during a bursting phase of a Galactic magnetar 期刊论文 OAI收割
Nature, 2020, 卷号: 587, 页码: 63-65
作者: HXMT

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收藏 | 浏览/下载：53/0 | 提交时间：2022/02/08

Astrophysics - High Energy Astrophysical Phenomena Abstract: Fast radio bursts (FRBs) are millisecond-duration radio transients of unknown physical origin observed at extragalactic distances^1-3. It has long been speculated that magnetars are the engine powering repeating bursts from FRB sources^4-13, but no convincing evidence has been collected so far¹⁴. Recently, the Galactic magnetar SRG 1935+2154 entered an active phase by emitting intense soft íray bursts¹⁵. One FRB-like event with two peaks (FRB 200428) and a luminosity slightly lower than the faintest extragalactic FRBs was detected from the source, in association with a soft íray/hard-X-ray flare^18-21. Here we report an eight-hour targeted radio observational campaign comprising four sessions and assisted by multi-wavelength (optical and hard-X-ray) data. During the third session, 29 soft-íray repeater (SGR) bursts were detected in íray energies. Throughout the observing period, we detected no single dispersed pulsed emission coincident with the arrivals of SGR bursts, but unfortunately we were not observing when the FRB was detected. The non-detection places a fluence upper limit that is eight orders of magnitude lower than the fluence of FRB 200428. Our results suggest that FRB-SGR burst associations are rare. FRBs may be highly relativistic and geometrically beamed, or FRB-like events associated with SGR bursts may have narrow spectra and characteristic frequencies outside the observed band. It is also possible that the physical conditions required to achieve coherent radiation in SGR bursts are difficult to satisfy, and that only under extreme conditions could an FRB be associated with an SGR burst.

Quality assessment of images with multiple distortions based on phase congruency and gradient magnitude 期刊论文 OAI收割
Signal Processing-Image Communication, 2019, 卷号: 79, 页码: 54-62
作者: X.K.Miao; H.R.Chu; H.Liu; Y.Yang; X.L.Li

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收藏 | 浏览/下载：26/0 | 提交时间：2020/08/24

No-reference,Image quality assessment,Phase congruency,Local binary,pattern,Image gradient,statistics,similarity,Engineering

Phase Transformation and Photocatalytic Properties of Bi2O3 Prepared Using a Precipitation Method 期刊论文 OAI收割
ACTA PHYSICO-CHIMICA SINICA, 2016, 卷号: 32, 期号: 5, 页码: 1247-1256
作者: Liu Guo; Lu Yuan-Yuan; Zhang Jing; Li Zhi; Feng Zhao-Chi

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收藏 | 浏览/下载：29/0 | 提交时间：2019/06/20

Bi5o7no3 Beta-bi2o3 Alpha-bi2o3 Bismuth Oxide Precipitation Method Phase Transformation

Thermodynamic modeling and experimental verification of eutectic point in the LiNO3-KNO3-Ca(NO3)(2) ternary system 期刊论文 OAI收割
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY, 2015, 卷号: 119, 期号: 2, 页码: 1259-1266
作者: Wang, Juntao; Lai, Mengze; Han, Haijun; Ding, Zhiying; Liu, Shijun

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收藏 | 浏览/下载：19/0 | 提交时间：2018/06/20

Phase Diagram Toop Model Lino3 Kno3 Ca(No3)(2) Molten Salt

Chemical evolution and late-stage re-equilibration of Zr-Hf-U-bearing columbite-group minerals in the Koktokay No. 1 granitic pegmatite, Altai, northwestern China 期刊论文 OAI收割
Canadian Mineralogist》 , 2015 , 53 (3) :461-478, 2015, 卷号: 53, 页码: 461-478
作者: RONG YIN; RU CHENG WANG; AI-CHENG ZHANG; HUAN HU; JIN CHU ZHU

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收藏 | 浏览/下载：39/0 | 提交时间：2018/09/11

Koktokay No. 1 Pegmatite Columbite-group Minerals Zr-hf-u Bearing Mnzrta2o8 Phase Zircon Evolution Chemical Re-equilibration

Molecular Weight Dependency of Crystallization and Melting Behavior of beta-Nucleated Isotactic Polypropylene 期刊论文 OAI收割
journal of polymer science part b-polymer physics, 2014, 卷号: 52, 期号: 19, 页码: 1301-1308
Lu, Ying; Wang, Qiao; Men, Yongfeng

收藏 | 浏览/下载：38/0 | 提交时间：2015/10/19

Compounds of isotactic polypropylene (iPP) and beta-nucleating agent were used to investigate the relationship between the development of beta phase and molecular weight in iPP under quiescent crystallization conditions by using wide angle X-ray diffraction and differential scanning calorimetry techniques. In all cases the dependency of the formation of beta phase in iPP on molecular weight of iPP at a defined crystallization temperature range was found. The iPP with high molecular weight possessed a wide range of crystallization temperature in inducing rich beta phase. However poor or even no beta phase was obtained for the samples with low molecular weight in the same range. In addition an upper critical crystallization temperature of producing dominant beta phase was found at 125 degrees C. Beyond this temperature a phenomenon of prevailing alpha phase became obvious. (C) 2014 Wiley Periodicals Inc.

Molar heat capacity and thermodynamic properties of Lu(C5H9NO4)(C3H4N2)(6)(ClO4)(3)center dot 5HClO(4)center dot 10H(2)O 期刊论文 OAI收割
journal of thermal analysis and calorimetry, 2013, 卷号: 111, 期号: 1, 页码: 971-976
作者: Lv, X. -C.; Tan, Z. -C.; Gao, X. -H.; Chen, P.

收藏 | 浏览/下载：24/0 | 提交时间：2015/11/09

Lu(C5H9NO4)(C3H4N2)(6)(ClO4)(3)center dot 5HClO(4)center dot 10H(2)O Adiabatic calorimetry Low-temperature heat capacity Phase transition Thermal analysis