中国科学院机构知识库网格系统: 检索

Satellite-Based Monitoring on Green-Up Date for Optimizing the Rest-Grazing Period in Xilin Gol Grassland 期刊论文 OAI收割
REMOTE SENSING, 2022, 卷号: 14, 期号: 14, 页码: 16
作者: Wang, Boyu; Yan, Huimin; Wen, Xin; Niu, Zhongen

|

收藏 | 浏览/下载：10/0 | 提交时间：2022/09/21

green-up date rest-grazing remote sensing grassland management ecological conservation animal husbandry

Satellite-Based Monitoring on Green-Up Date for Optimizing the Rest-Grazing Period in Xilin Gol Grassland 期刊论文 OAI收割
REMOTE SENSING, 2022, 卷号: 14, 期号: 14, 页码: 16
作者: Wang, Boyu; Yan, Huimin; Wen, Xin; Niu, Zhongen

|

收藏 | 浏览/下载：13/0 | 提交时间：2022/09/21

green-up date rest-grazing remote sensing grassland management ecological conservation animal husbandry

Satellite-Based Monitoring on Green-Up Date for Optimizing the Rest-Grazing Period in Xilin Gol Grassland 期刊论文 OAI收割
REMOTE SENSING, 2022, 卷号: 14, 期号: 14, 页码: 16
作者: Wang, Boyu; Yan, Huimin; Wen, Xin; Niu, Zhongen

|

收藏 | 浏览/下载：7/0 | 提交时间：2022/09/21

green-up date rest-grazing remote sensing grassland management ecological conservation animal husbandry

Satellite-Based Monitoring on Green-Up Date for Optimizing the Rest-Grazing Period in Xilin Gol Grassland 期刊论文 OAI收割
REMOTE SENSING, 2022, 卷号: 14, 期号: 14, 页码: 16
作者: Wang, Boyu; Yan, Huimin; Wen, Xin; Niu, Zhongen

|

收藏 | 浏览/下载：7/0 | 提交时间：2022/09/21

green-up date rest-grazing remote sensing grassland management ecological conservation animal husbandry

一种 REST API 设计质量分析系统的设计与实现 学位论文 OAI收割
硕士, 北京: 中国科学院研究生院, 2022
作者: 周芯宇

|

收藏 | 浏览/下载：16/0 | 提交时间：2022/06/14

REST API 设计规范规则检查请求生成

Restoration Measures Supported Surface Soil Carbon and Nitrogen Density in Alpine Grassland of Sanjiangyuan Region, China 期刊论文 OAI收割
POLISH JOURNAL OF ENVIRONMENTAL STUDIES, 2020, 卷号: 29, 期号: 5
作者: Chen, Dongdong; Li, Qi; He, Fuquan; Chen, Xin; Xu, Shixiao

|

收藏 | 浏览/下载：22/0 | 提交时间：2020/11/25

Qinghai-Tibetan Plateau rest-grazing grain for green returning grazing land to grassland soil carbon and nitrogen

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

|

收藏 | 浏览/下载：49/0 | 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.

Experimental study on the coefficient of lateral pressure at rest for calcareous soils 期刊论文 OAI收割
MARINE GEORESOURCES & GEOTECHNOLOGY, 2019, 页码: 13
作者: Wang, Xing; Zhu, Chang-Qi; Wang, Xin-Zhi

|

收藏 | 浏览/下载：16/0 | 提交时间：2019/10/17

Coefficient of lateral pressure at rest calcareous sand siliceous sand empirical formula

T-REST: An Open-Enabled Architectural Style for the Internet of Things 期刊论文 OAI收割
IEEE INTERNET OF THINGS JOURNAL, 2019, 卷号: 6, 期号: 3, 页码: 4019-4034
作者: Chao, Lu; Peng, Xiaohui; Xu, Zhiwei

|

收藏 | 浏览/下载：49/0 | 提交时间：2019/08/16

Computing offloading edge computing reusable remote evaluation (REV) representational state transfer (REST) principles software architectural style

Reduced default mode network functional connectivity in patients with recurrent major depressive disorder 期刊论文 OAI收割
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA, 2019, 卷号: 116, 期号: 18, 页码: 9078-9083
作者: Yan, Chao-Gan; Chen, Xiao; Li, Le; Castellanos, Francisco Xavier; Bai, Tong-Jian

|

收藏 | 浏览/下载：176/0 | 提交时间：2019/06/03

default mode network functional connectivity major depressive disorder resting-state fMRI REST-meta-MDD