Results 21 to 30 of about 57,118 (143)

Rest-task modulation of fMRI-derived global signal topography is mediated by transient coactivation patterns.

PLoS Biology, 2020
Recent resting-state functional MRI (fMRI) studies have revealed that the global signal (GS) exhibits a nonuniform spatial distribution across the gray matter. Whether this topography is informative remains largely unknown.
Jianfeng Zhang, Zirui Huang, Shankar Tumati, Georg Northoff   +3 more
doaj   +1 more source

Diurnal Variation and Distribution of Short-Duration Heavy Rainfall in Beijing–Tianjin–Hebei Region in Summer Based on High-Density Automatic Weather Station Data

Atmosphere, 2021
The distribution and diurnal variation of short-duration heavy rainfall (SDHR) and the influence of a complex underlying surface were studied by using fine-scale hourly precipitation data in the Beijing–Tianjin–Hebei (BTH) region during the summers of ...
Conglan Cheng, Qingchun Li, Youjun Dou, Yaoting Wang   +3 more
doaj   +1 more source

SPICE-Based SAR Tomography over Forest Areas Using a Small Number of P-Band Airborne F-SAR Images Characterized by Non-Uniformly Distributed Baselines

Remote Sensing, 2019
Synthetic aperture radar tomography (TomoSAR) has been proven to be a useful way to reconstruct vertical structure over forest areas with P-band images, on account of its three-dimensional imaging ability.
Xing Peng, Xinwu Li, Changcheng Wang, Jianjun Zhu, Lei Liang, Haiqiang Fu, Yanan Du, Zefa Yang, Qinghua Xie   +8 more
doaj   +1 more source

Topography modifies the effect of land‐use change on soil respiration: A meta‐analysis

Ecosphere, 2021
Soil respiration is controlled by land‐use changes associated with cropland vegetation restoration, and this can vary with topography, although the magnitude of this effect and the underlying mechanisms are still unclear.
Yanjun Zhang, Junliang Zou, Shuina Dang, Bruce Osborne, Yuanyuan Ren, Xueliang Ju   +5 more
doaj   +1 more source

Energy Landscape Topography Reveals the Underlying Link Between Binding Specificity and Activity of Enzymes [PDF]

Scientific Reports, 2016
AbstractEnzyme activity (often quantified by kcat /Km ) is the main function of enzyme when it is active against the specific substrate. Higher or lower activities are highly desired for the design of novel enzyme and drug resistance. However, it is difficult to measure the activities of all possible variants and find the “hot-spot” within the limit of
Wen-Ting Chu, Jin Wang
openaire   +2 more sources

Modelling the impact of anthropogenic measures on saltwater intrusion in the Weser estuary [PDF]

Ocean Science, 2022
The Weser estuary has been subject to profound changes in topography in the past 100 years through natural variations and river engineering measures, leading to strong changes in hydrodynamics.
P. Kolb, A. Zorndt, H. Burchard, U. Gräwe, F. Kösters   +4 more
doaj   +1 more source

Mathematical modeling of propagation and deposition dynamics of polydisperse aerosol formation in rugged topography conditions

Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2007
The results of mathematical modeling of aerosol formation transition in rugged topography conditions using the verificated mathematical model are analyzed. The results which allow the preliminary qualitative estimating of inclusions propagation impact in
M. V. Men'shov
doaj   +1 more source

Altered global signal topography in Alzheimer's diseaseResearch in context

EBioMedicine, 2023
Summary: Background: Alzheimer's disease (AD) is a neurodegenerative disease associated with widespread disruptions in intrinsic local specialization and global integration in the functional system of the brain.
Pindong Chen, Kun Zhao, Han Zhang, Yongbin Wei, Pan Wang, Dawei Wang, Chengyuan Song, Hongwei Yang, Zengqiang Zhang, Hongxiang Yao, Yida Qu, Xiaopeng Kang, Kai Du, Lingzhong Fan, Tong Han, Chunshui Yu, Bo Zhou, Tianzi Jiang, Yuying Zhou, Jie Lu, Ying Han, Xi Zhang, Bing Liu, Yong Liu   +23 more
doaj   +1 more source

S‐RVoG model for forest parameters inversion over underlying topography

Electronics Letters, 2013
Since the terrain slope cannot be neglected for forest height inversion with polarimetric synthetic aperture radar interferometry (PolInSAR), a sloped random volume over ground (S‐RVoG) model is proposed to correct the terrain distortion for forest parameters estimation.
Hongxi Lu, Zhiyong Suo, Rui Guo, Zheng Bao   +3 more
openaire   +1 more source

A Novel High-Resolution Fully Polarization Nonparametric Spectrum Estimation Method for Forest SAR Tomography

IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing
The polarimetric synthetic aperture radar tomography (TomoSAR) technique has proven to be a highly promising cutting-edge microwave remote sensing technique for obtaining forest vertical structure parameters because of its ability in three-dimensional ...
Youjun Wang, Xing Peng, Qinghua Xie, Yanan Du, Bing Zhang, Xiaomin Luo, Weijun Yan, Xinwu Li   +7 more
doaj   +1 more source