中国科学院机构知识库网格系统: 检索

Effects of vegetation restoration on soil infiltrability and preferential flow in hilly gully areas of the Loess Plateau, China 期刊论文 OAI收割
CATENA, 2023, 卷号: 221, 页码: 13
作者: Qiu, Dexun; Xu, Ruirui; Wu, Changxue; Mu, Xingmin; Zhao, Guangju

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收藏 | 浏览/下载：28/0 | 提交时间：2023/02/06

Infiltration capacity Preferential flow Land use change Vegetation restoration Soil properties Loess Plateau

Vegetation restoration improves soil hydrological properties by regulating soil physicochemical properties in the Loess Plateau, China 期刊论文 OAI收割
JOURNAL OF HYDROLOGY, 2022, 卷号: 609, 页码: 12
作者: Qiu, Dexun; Xu, Ruirui; Wu, Changxue; Mu, Xingmin; Zhao, Guangju

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收藏 | 浏览/下载：31/0 | 提交时间：2022/09/21

Soil hydrology Soil properties Saturated hydraulic conductivity Vegetation restoration Land-use change Loess Plateau

Jungle rubber facilitates the restoration of degraded soil of an existing rubber plantation 期刊论文 OAI收割
JOURNAL OF ENVIRONMENTAL MANAGEMENT, 2021, 卷号: 281, 期号: -, 页码: -
作者: Zeng, Huanhuan; Wu, Junen; Zhu, Xiai; Singh, Ashutosh Kumar; Chen, Chunfeng

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收藏 | 浏览/下载：53/0 | 提交时间：2021/03/18

Land-use change Rubber plantation Soil physical properties Soil nutrients

Impact of Rapid and Intensive Land Use/Land Cover Change on Soil Properties in Arid Regions: A Case Study of Lanzhou New Area, China 期刊论文 OAI收割
SUSTAINABILITY, 2020, 卷号: 12, 期号: 21, 页码: 16
作者: Zhang, Runxia; Zhao, Xueyong; Zhang, Chencheng; Li, Jing

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收藏 | 浏览/下载：33/0 | 提交时间：2020/12/30

Lanzhou New Area principal component analysis rapid land use change soil physiochemical properties urbanization

Biofilm formation and its influences on the properties of microplastics as affected by exposure time and depth in the seawater 期刊论文 OAI收割
SCIENCE OF THE TOTAL ENVIRONMENT, 2020, 卷号: 734, 页码: 139237
作者: Tu, Chen; Chen, Tao; Zhou, Qian; Liu, Ying; Wei, Jing

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收藏 | 浏览/下载：32/0 | 提交时间：2021/12/01

Microplastics Biofilm formation Properties change Exposure time and depth Seawater

Structural characterization of a novel galactoglucan from Fortunella margarita and its molecular structural change following simulated digestion in vitro 期刊论文 OAI收割
JOURNAL OF FUNCTIONAL FOODS, 2020, 卷号: 71, 页码: 10
作者: Chen, Peilin; Lei, Suzhen; Chen, Yueyu; Chang, Qing; Zhang, Yi

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收藏 | 浏览/下载：36/0 | 提交时间：2021/06/21

Fortunella margarita Galactoglucan Structural properties Molecular structural change Simulated digestion

Fragile-to-strong crossover in optimized In-Sb-Te phase-change supercooled liquids 期刊论文 OAI收割
PHYSICAL REVIEW MATERIALS, 2020, 卷号: 4, 期号: 3
作者: Chen, Yimin; Gu, Jierong; Zhang, Qian; Mao, Yuanen; Wang, Guoxiang

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收藏 | 浏览/下载：28/0 | 提交时间：2020/12/16

CRYSTALLIZATION KINETICS CHANGE NANOPARTICLES TRANSPORT-PROPERTIES STRONG TRANSITION THIN-FILMS X-RAY TEMPERATURE VISCOSITY DISORDER GROWTH

An underlying clock in the extreme flip-flop state transitions of the black hole transient Swift J1658.2-4242 期刊论文 OAI收割
Astronomy and Astrophysics, 2020, 卷号: 641, 页码: A101
作者: HXMT

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收藏 | 浏览/下载：58/0 | 提交时间：2022/02/08

accretion accretion disks black hole physics X-rays: binaries time Astrophysics - High Energy Astrophysical Phenomena Abstract:
Aims: Flip-flops are top-hat-like X-ray flux variations, which have been observed in some transient accreting black hole binary systems, and feature simultaneous changes in the spectral hardness and the power density spectrum (PDS). They occur at a crucial time in the evolution of these systems, when the accretion disc emission starts to dominate over coronal emission. Flip-flops remain a poorly understood phenomenon, so we aim to thoroughly investigate them in a system featuring several such transitions.
Methods: Within the multitude of observations of Swift J1658.2-4242 during its outburst in early 2018, we detected 15 flip-flops, enabling a detailed analysis of their individual properties and the differences between them. We present observations by XMM-Newton, NuSTAR, Astrosat, Swift, Insight-HXMT, INTEGRAL, and ATCA. We analysed their light curves, searched for periodicities, computed their PDSs, and fitted their X-ray spectra, to investigate the source behaviour during flip-flop transitions and how the interval featuring flip-flops differs from the rest of the outburst.
Results: The flip-flops of Swift J1658.2-4242 are of an extreme variety, exhibiting flux differences of up to 77% within 100 s, which is much larger than what has been seen previously. We observed radical changes in the PDS simultaneous with the sharp flux variations, featuring transitions between the quasi-periodic oscillation types C and A, which have never been observed before. Changes in the PDS are delayed, but more rapid than changes in the light curve. Flip-flops occur in two intervals within the outburst, separated by about two weeks in which these phenomena were not seen. Transitions between the two flip-flop states occurred at random integer multiples of a fundamental period of 2.761 ks in the first interval and 2.61 ks in the second. Spectral analysis reveals the high and low flux flip-flop states to be very similar, but distinct from intervals lacking flip-flops. A change of the inner temperature of the accretion disc is responsible for most of the flux difference in the flip-flops. We also highlight the importance of correcting for the influence of the dust scattering halo on the X-ray spectra.

Effects of revegetation on climate in the Mu Us Sandy Land of China 期刊论文 OAI收割
SCIENCE OF THE TOTAL ENVIRONMENT, 2020, 卷号: 739
作者: Zheng, Ying; Dong, Lei; Xia, Qian; Liang, Cunzhu; Wang, Lixin

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收藏 | 浏览/下载：20/0 | 提交时间：2022/03/01

Vegetation restoration Climate change WRF model Land surface biogeophysical properties Arid and semi-arid region

罗布泊盐湖沉积物磁性特征及其古环境记录研究 学位论文 OAI收割
北京: 中国科学院大学, 2019
作者: 李文

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收藏 | 浏览/下载：50/0 | 提交时间：2021/12/10

盐湖沉积罗布泊磁性特征早期成岩作用古气候变化 Saline lake sediments Lop Nur Magnetic properties Early diagenesis paleo-environmental change