Results 21 to 30 of about 395,262 (311)

Vis–NIR Spectroscopy Characteristics of Wetland Soils with Different Water Contents and Machine Learning Models for Carbon and Nitrogen Content

Ecologies
Soil nutrient detection in wetlands is critical for rapidly and effectively managing these ecosystems. Our objective was to provide a methodological framework for identifying optimal data processing methods and machine learning model for predicting soil ...
Keying Qu, Leichao Nie, Lijuan Cui, Huazhe Li, Mingshuo Xiong, Xiajie Zhai, Xinsheng Zhao, Jinzhi Wang, Yinru Lei, Wei Li   +9 more
doaj   +1 more source

Historical and Material Approach to the Paintings at the Portugal National Library: Contributions to the History of Conservation and Restoration of Easel Painting in the 19th Century [PDF]

, 2012
There are in the National Library of Portugal (BNP) about fifty paintings from former convents, mainly portraits executed between the sixteenth and nineteenth centuries, which are hung in rooms and along corridors, far from the eyes of the public and ...
Cruz, A. J., Rego, C., Rodrigues, R. M., Soares, C. M.   +3 more
core   +1 more source

The Analysis of Spatial and Temporal Changes in Ecological Quality and Its Drivers in the Baiyangdian Watershed

Remote Sensing
As a critical ecological security node in North China, the Baiyangdian Basin underpins regional water resources, biodiversity conservation, and environmental risk mitigation.
Haoyang Wang, Chunyi Li, Meng Li, Yangying Zhan, Kexin Liu, Junxuan Li   +5 more
doaj   +1 more source

Asynchronous responses of microbial CAZymes genes and the net CO2 exchange in alpine peatland following 5 years of continuous extreme drought events

ISME Communications, 2022
Peatlands act as an important sink of carbon dioxide (CO2). Yet, they are highly sensitive to climate change, especially to extreme drought. The changes in the net ecosystem CO2 exchange (NEE) under extreme drought events, and the driving function of ...
Zhongqing Yan, Enze Kang, Kerou Zhang, Yanbin Hao, Xiaodong Wang, Yong Li, Meng Li, Haidong Wu, Xiaodong Zhang, Liang Yan, Wantong Zhang, Jie Li, Ao Yang, Yuechuan Niu, Xiaoming Kang   +14 more
doaj   +1 more source

Decoding anthropogenic risk through historical baselines: a conservation prioritization framework for Chinese white dolphin in anthropogenic seascapes

Frontiers in Marine Science
Coastal cetaceans confront intensifying anthropogenic pressures, yet quantifying historical habitat loss remains methodologically challenging in data-scarce regions where shifting baseline syndrome obscures conservation targets.
Liming Yong, Liming Yong, Xixia Lu, Xixia Lu, Qianhui Zeng, Qianhui Zeng, Liyuan Zhao, Liyuan Zhao, Yuke Zhang, Yuke Zhang, Xianyan Wang, Xianyan Wang   +11 more
doaj   +1 more source

The identification, approaches to cleaning and removal of a lead-rich salt crust from the surface of an 18th century oil painting

Heritage Science, 2023
A thin, grey surface layer was noticed after removing the varnish of an eighteenth century Dutch oil painting, by an unknown artist titled Vision of Saint Lutgard of Tongeren. This layer masked the paint layer almost entirely, casting a greyish veil that
Nikita Shah, Emilie Froment, Kate Seymour   +2 more
doaj   +1 more source

Implications of Spatially Variable Costs and Habitat Conversion Risk in Landscape-Scale Conservation Planning [PDF]

, 2018
‘‘Strategic habitat conservation’’ refers to a process used by the U.S. Fish and Wildlife Service to develop cost-efficient strategies for conserving wildlife populations and their habitats.
Chartier, Neil, Drum, Ryan, Post van der Burg, Max   +2 more
core   +1 more source

In situ molecular organization and heterogeneity of the Legionella Dot/Icm T4SS

FEBS Letters, EarlyView.
We present a nearly complete in situ model of the Legionella Dot/Icm type IV secretion system, revealing its central secretion channel and identifying new components. Using cryo‐electron tomography with AI‐based modeling, our work highlights the structure, variability, and mechanism of this complex nanomachine, advancing understanding of bacterial ...
Przemysław Dutka, Yuxi Liu, Stefano Maggi, Debnath Ghosal, Jue Wang, Prashant P. Damke, Stephen D. Carter, Wei Zhao, Sukhithasri Vijayrajratnam, Joseph P. Vogel, Carrie L. Shaffer, Grant J. Jensen   +11 more
wiley   +1 more source

Decoupling Distribution of n-Alkanes in Aeolian Sand and Vegetation of the Northern Ulan Buh Desert, China: Insight into Organic Matter Preservation in Arid Regions

Plants
Fallen leaves and their decomposition directly deposit leaf wax n-alkanes into sediments, which can be used to identify local flora. These n-alkanes are important for studying past vegetation and climate, but their distribution in sediments must be known.
Shangzhe Zhou, Lei Xi, Mengchun Cui, Guipeng Cui, Pan Gao, Jinlei Zhu, Weiyuan Kong, Yufu Jia, Qi Lu   +8 more
doaj   +1 more source

The complete chloroplast genome of Beesia deltophylla (Ranunculaceae)

Mitochondrial DNA. Part B. Resources, 2021
Beesia deltophylla is an endemic and rare species only distributed in Xizang, China. The chloroplast genome of B. deltophylla is 157,397 bp in length, with 112 encoded genes including 78 protein-coding genes, 30 tRNA genes and 4 rRNA genes.
Zhe-Fei Zeng, Rui Rao, Qing-Guo Yu, Liang-Liang Yue   +3 more
doaj   +1 more source