Results 61 to 70 of about 74,383 (294)

Comparative Analysis of Temporal-Spatial Variation on Mountain-Flatland Landscape Pattern in Karst Mountainous Areas of Southwest China: A Case Study of Yuxi City

open access: yesLand, 2023
Taking Yuxi City, a typical mountain-flatland in the southwestern karst mountainous area, as an example, we used six remote sensing images from 1995 to 2018 as the main data sources, and the grid scale was used to calculate the landscape pattern index in
Li Wu, Jing Zhou, Binggeng Xie
doaj   +1 more source

Grain size effect of sensitive landscape index.

open access: yes, 2023
(a)PD (Patch Density). (b)AI (Aggregation Index). (c)LSI (Landscape Shape Index). (d)DIVISION (Landscape Spearation). (e)SHDI (Shannon’s Diversity Index). (f)SHEI (Shannon’s Evenness Index).
Jie Zhang (64655)   +3 more
core   +1 more source

Tau acetylation at K331 has limited impact on tau pathology in vivo

open access: yesFEBS Letters, EarlyView.
We mapped tau post‐translational modifications in humanized MAPT knock‐in mice and in amyloid‐bearing double knock‐in mice. Acetylation within the repeat domain, particularly around K331, showed modest increases under amyloid pathology. To test functional relevance, we generated MAPTK331Q knock‐in mice.
Shoko Hashimoto   +3 more
wiley   +1 more source

Calpain small subunit homodimerization is robust and calcium‐independent

open access: yesFEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy   +4 more
wiley   +1 more source

Assessing spatial–temporal heterogeneity of China’s landscape fragmentation in 1980–2020

open access: yesEcological Indicators, 2022
Exploring the spatial–temporal heterogeneity of landscape fragmentation contributes to realizing the dynamic evolution of the landscape pattern and understanding the impacts of physical-geographical environment and human activities on landscape systems ...
Lilin Zou, Jianying Wang, Mengdi Bai
doaj   +1 more source

Evaluation and Prediction of Cultivated Land Fragmentation Based on Landscape Pattern Index in Jizhou District of Tianjin City

open access: yesShuitu baochi tongbao, 2022
[Objective] The effects of cultivated land fragmentation was evaluated and predicted in order to provide a useful reference to address the problem of cultivated land fragmentation in the Jizhou District of Tianjin City. [Methods] The temporal and spatial evolution characteristics of cultivated land fragmentation from 2000 to 2020 were analyzed by means
Zhang Ge, Ma Jie, Xu Song
openaire   +1 more source

The application of a remotely-sensed diversity index to monitor degradation patterns in a semi-arid, heterogeneous, South African landscape

open access: yesJournal of Arid Environments, 1999
We present a remotely-sensed degradation assessment technique based on the measurement of landscape heterogeneity (a key determinant of degradation status). The moving standard deviation index (MSDI) is derived by passing a moving standard deviation filter across the Landsat TM band 3 (red band).
Frank Tanser, A.R. Palmer
openaire   +2 more sources

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

open access: yesFEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Integration of InVEST-habitat quality model with landscape pattern indexes to assess mountain plant biodiversity change: A case study of Bailongjiang watershed in Gansu Province [PDF]

open access: yesJournal of Geographical Sciences, 2019
Mountains in western China, hosted rich biodiversity and millions of people and inhabitant with vital ecosystem services, had experienced the most serious biodiversity loss with fragile ecological problems. Even though increasing attentions had been paid to this issue, we still lacked efficient methods to assess the change of plant biodiversity at ...
Jie Gong   +4 more
openaire   +1 more source

Epigenetic blind spots – the role of DNA methylation dynamics in stem cell‐based models of embryogenesis

open access: yesFEBS Letters, EarlyView.
Embryo‐like structures (stembryos) are an innovative tool, but they are hindered by experimental variability and limited developmental potential. DNA methylation is crucial for mammalian development, but its status in stembryo models is poorly characterized.
Sara Canil   +4 more
wiley   +1 more source

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