中国科学院机构知识库网格系统: 检索

An improved method of active earth pressure on rigid retaining wall under movement modes considering arching effects 期刊论文 OAI收割
INTERNATIONAL JOURNAL FOR NUMERICAL AND ANALYTICAL METHODS IN GEOMECHANICS, 2023, 卷号: 47, 期号: 3, 页码: 410
作者: Fan, Ling; Zheng, Zhuyan; Peng, Shuquan; Zhou, Jian; Shen, Tianli

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收藏 | 浏览/下载：21/0 | 提交时间：2023/08/02

active earth pressure rigid retaining wall rotation about top mode the most notable soil arching Winkler Elastic Foundation Beam

Characterizing emotion profiles in non-clinical population: A cluster analytical study 期刊论文 OAI收割
PSYCH JOURNAL, 2022, 页码: 9
作者: Wen, Bao-fang; Hu, Hui-xin; Zhang, Yi-jing; Wang, Ling-ling; Yang, Han-xue

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beliefs about pleasure cluster analysis emotion regulation emotional expression pleasure experience

Negative belief-updating bias for positive daily life events in individuals with schizophrenia and social anhedonia 期刊论文 OAI收割
COGNITIVE NEUROPSYCHIATRY, 2021, 页码: 18
作者: Hu, Hui-xin; Jiang, Shu-yao; Shan, Hai-di; Chu, Min-yi; Lv, Qin-yu

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Anhedonia beliefs about pleasure belief-updating schizophrenia

Ocean Circulation in the Challenger Deep Derived From Super-Deep Underwater Glider Observation 期刊论文 OAI收割
Geophysical Research Letters, 2021, 卷号: 48, 期号: 13, 页码: e2021GL093169
作者: Jiang HC(江会常); Xu HZ(徐洪周); Vetter Phillip A; Xie Q(谢强); Yu JC(俞建成)

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收藏 | 浏览/下载：9/0 | 提交时间：2021/12/22

Water property in the Challenger Deep has a three-layer structure Westward geostrophic flow dominated the Challenger Deep and its core is shallower in the west Large volume transport of Lower Circumpolar Deep Water (LCDW) about 1.29 Sv passed through the trench area above 7,000 m

The braking index of PSR B0540-69 and the associated pulsar wind nebula emission after spin-down rate transition 期刊论文 OAI收割
Monthly Notices of the Royal Astronomical Society, 2020, 卷号: 494, 页码: 1865-1870
作者: HXMT

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stars: magnetic field stars: neutron pulsars: general Astrophysics - High Energy Astrophysical Phenomena Abstract: In 2011 December, PSR B054-69 experienced a spin-down rate transition (SRT), after which the spin-down power of the pulsar increased by $\sim 36{{\ \rm per\ cent}}$. About 1000 d after the SRT, the X-ray luminosity of the associated pulsar wind nebula (PWN) was found to brighten by $32\pm 8{{\ \rm per\ cent}}$. After the SRT, the braking index n of PSR B0540-69 changes from n = 2.12 to 0.03 and then keeps this value for about five years before rising to n = 0.9 in the following years. We find that most of the current models have difficulties in explaining the measured braking index. One exceptive model of the braking index evolution is the increasing dipole magnetic field of PSR B0540-69. We suggest that the field increase may result from some instabilities within the pulsar core that enhance the poloidal component at the price of toroidal component of the magnetic field. The increasing dipole magnetic field will result in the X-ray brightening of the PWN. We fit the PWN X-ray light curve by two models: one assumes a constant magnetic field within the PWN during the brightening and the other assumes an enhanced magnetic field proportional to the energy density of the PWN. It appears that the two models fit the data well, though the later model seems to fit the data a bit better. This provides marginal observational evidence that magnetic field in the PWN is generated by the termination shock. Future high-quality and high-cadence data are required to draw a solid conclusion.

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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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.

碳氮稳定同位素比值在潮间带大型底栖动物组织间差异性研究 期刊论文 OAI收割
海洋学报, 2019, 卷号: 41, 期号: 4, 页码: 74-82
作者: 李宝泉

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潮间带大型底栖动物碳氮稳定同位素食源和营养级分析采样部位选取 intertidal zone macrobenthos carbon and nitrogen stable isotopes food sources and trophic levels study,sampling parts The technique of stable isotope analysis has been widely applied for the field of food web studies in recent years.However,few researches concerned about the impacts of different tissues used for analysis on the food web building.With the purpose of accuracy and comparability in the food web studies,the sampling tissues should be standardized.In this study,10macrobenthic species from the intertidal zone of the Yellow River Delta and Yantai were chosen as the target object to test the isotopic characteristic variations ofdelta~(13)C anddelta15 N at different body parts (whole bodies,muscles and gills).Our results show thatdelta~(13)C anddelta15 N values vary in different sampling tissues for most species,which indicates the different tissues used for analysis impact the food web building.To achieve a more accuracy and comparability result,suitable tissue should be primarily chosen for their food sources and trophic levels analysis.Namely,when the organism as predator,their muscles should first be chosen,for examples,adductor and foot muscles of mollusks,leg muscles of crabs and back muscles of fishes when the organism as prey, most of their tissues,except for indigestible part(for polychaetes,the digestive tract contents should be removed) should be chosen for analysis on food sources and trophic levels of the secondary consumer,for example,whole soft parts of mollusks,the mixture of muscles and gills of crabs.

Low-pleasure beliefs in patientswith schizophrenia and individuals with social anhedonia 期刊论文 OAI收割
SCHIZOPHRENIA RESEARCH, 2018, 卷号: 201, 页码: 137-144
作者: Yang, Yin; Yang, Zhuo-ya; Zou, Ying-min; Shi, Hai-song; Wang, Yi

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收藏 | 浏览/下载：108/0 | 提交时间：2018/12/13

Anhedonia Low-pleasure Beliefs Schizophrenia Beliefs About Pleasure Scale Experience Of Pleasure

Alzheimer's disease hypothesis and related therapies 期刊论文 OAI收割
TRANSLATIONAL NEURODEGENERATION, 2018, 卷号: 7
作者: Du, Xiaoguang; Wang, Xinyi; Geng, Meiyu

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收藏 | 浏览/下载：34/0 | 提交时间：2019/01/08

Alzheimer's disease complicated disease anti-AD drugs Hypothesis about AD

Mediation effect of beliefs about pleasure and emotional experience between social anhedonia and prediction of pleasant events 期刊论文 OAI收割
PSYCHIATRY RESEARCH, 2018, 卷号: 264, 页码: 39-45
作者: Hu Hui-xin; Chu Min-yi; Yang Yin; Wang Ling-ling; Zhang Rui-ting

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收藏 | 浏览/下载：86/0 | 提交时间：2021/01/28

Social anhedonia Beliefs about pleasure Emotional experience Prediction of life events