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• 地理科学与资源研究所 [6]
• 大连化学物理研究所 [5]
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• OAI收割 [40]

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筛选

浏览/检索结果: 共40条，第1-10条 帮助 条数/页： 5101520253035404550556065707580859095100 排序方式： 请选择题名升序题名降序提交时间升序提交时间降序作者升序作者降序发表日期升序发表日期降序 AGRICULTURE LAND USE EFFICIENCY IN RAPID URBANIZED CHINA, 2006-2022 期刊论文  OAI收割 SINGAPORE ECONOMIC REVIEW, 2025 作者:  Zhao, Haipeng;  Han, Ze;  Deng, Xiangzheng   |  收藏  |  浏览/下载：4/0  |  提交时间：2025/02/24 Agricultural land  construction land  data envelopment analysis  land use efficiency  rapid urbanization   Portable instrument based on color sensor chip for on-site rapid detection of dissolved sulfides in environmental water samples 期刊论文  OAI收割 JOURNAL OF HAZARDOUS MATERIALS, 2023, 卷号: 460, 页码: 10 作者:  Gao, Ge;  Qi, Ji;  Fu, Longwen;  Zhao, Rongfang;  Zhang, Zhiyang   |  收藏  |  浏览/下载：15/0  |  提交时间：2023/11/15 Dissolved sulfide  On-site detection  Rapid analysis  Portable instrument   Portable instrument based on color sensor chip for on-site rapid detection of dissolved sulfides in environmental water samples 期刊论文  OAI收割 JOURNAL OF HAZARDOUS MATERIALS, 2023, 卷号: 460, 页码: 10 作者:  Gao, Ge;  Qi, Ji;  Fu, Longwen;  Zhao, Rongfang;  Zhang, Zhiyang   |  收藏  |  浏览/下载：12/0  |  提交时间：2024/11/02 Dissolved sulfide  On-site detection  Rapid analysis  Portable instrument   Splitting one species into 22: an unusual tripling of molecular, morphological, and geographical differentiation in the fern family Didymochlaenaceae (Polypodiales) 期刊论文  OAI收割 CLADISTICS, 2023, 卷号: 39, 期号: 4, 页码: 273-292 作者:  Shang,Hui;  Xue,Zhi-Qing;  Liang,Zhen-Long;  Kessler,Michael;  Pollawatn,Rossarin   |  收藏  |  浏览/下载：19/0  |  提交时间：2024/07/22 PHYLOGENETIC ANALYSIS  DEEP RELATIONSHIPS  RAPID RADIATION  EVOLUTION  GENUS  CLASSIFICATION  BIOGEOGRAPHY  HISTORY  DIVERSIFICATION  PARSIMONY   Phylotranscriptomic analyses reveal deep gene tree discordance in Camellia (Theaceae) 期刊论文  OAI收割 MOLECULAR PHYLOGENETICS AND EVOLUTION, 2023, 卷号: 188, 页码: 107912 作者:  Zhang,Qiong;  Folk,Ryan A.;  Mo,Zhi-Qiong;  Ye,Hang;  Zhang,Zhao-Yuan   |  收藏  |  浏览/下载：13/0  |  提交时间：2024/07/25 Camellia  Gene tree discordance  Transcriptome  Rapid diversification  Selective pressure  RNA-SEQ DATA  PHYLOGENETIC ANALYSIS  NUCLEAR GENES  SEQUENCE  EVOLUTION  RESOLUTION  HISTORY  INFERENCE  ALGORITHM  SELECTION   Research Progress of Spectroscopy Detection Technologies for Waterborne Pathogens 期刊论文  OAI收割 SPECTROSCOPY AND SPECTRAL ANALYSIS, 2022, 卷号: 42 作者:  Hu Yu-xia;  Chen Jie;  Shao Hui;  Yan Pu;  Xu Heng   |  收藏  |  浏览/下载：30/0  |  提交时间：2022/12/23 Waterborne pathogen  Spectral Analysis  Rapid detection  UV/Vis spectroscopy  Fluorescence spectroscopy  Water security   New Genes Interacted With Recent Whole-Genome Duplicates in the Fast Stem Growth of Bamboos 期刊论文  OAI收割 MOLECULAR BIOLOGY AND EVOLUTION, 2021, 卷号: 38, 期号: 12, 页码: 5752-5768 作者:  Jin,Guihua;  Ma,Peng-Fei;  Wu,Xiaopei;  Gu,Lianfeng;  Long,Manyuan   |  收藏  |  浏览/下载：67/0  |  提交时间：2022/04/02 fast stem growth  orphan genes  de novo genes  WGD  woody bamboos  evolutionary innovation  EVOLUTIONARY ORIGIN  DROSOPHILA-MELANOGASTER  PHYLOGENETIC ANALYSIS  VERTEBRATE EVOLUTION  RAPID EVOLUTION  HUMAN TISSUE  YOUNG GENES  TRANSCRIPTION  EXPRESSION  HOURGLASS   The new chimeric chiron genes evolved essential roles in zebrafish embryonic development by regulating NAD(+) levels 期刊论文  OAI收割 SCIENCE CHINA-LIFE SCIENCES, 2021, 卷号: 64, 期号: 11, 页码: 1929-1948 作者:  Fang,Chengchi;  Gan,Xiaoni;  Zhang,Chengjun;  He,Shunping   |  收藏  |  浏览/下载：42/0  |  提交时间：2022/04/02 new chimeric genes  essential function  NAD plus rate-limiting enzyme  coevolution  COLONY-ENHANCING FACTOR  DE-NOVO ORIGINATION  PHYLOGENETIC ANALYSIS  PROTEIN DIVERSITY  RAPID EVOLUTION  DUPLICATE GENES  GENERATION TIME  PATHWAY  YOUNG  NEOFUNCTIONALIZATION   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   |  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   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：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.