Results 21 to 30 of about 59,314 (194)

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

open access: yesEcologies
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   +9 more
doaj   +1 more source

Remarkable metabolic reorganization and altered metabolic requirements in frog metamorphic climax

open access: yesFrontiers in Zoology, 2020
Background Metamorphic climax is the crucial stage of amphibian metamorphosis responsible for the morphological and functional changes necessary for transition to a terrestrial habitat.
Wei Zhu   +4 more
doaj   +1 more source

Natural climate solutions [PDF]

open access: yes, 2017
Our thanks for inputs by L. Almond, A. Baccini, A. Bowman, S. CookPatton, J. Evans, K. Holl, R. Lalasz, A. Nassikas, M. Spalding, M. Wolosin, and expert elicitation respondents.
Adams, Justin   +31 more
core   +1 more source

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

open access: yesRemote 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   +5 more
doaj   +1 more source

Aesthetical presentation of a devotional artwork. Issues and possible virtual solutions

open access: yesGe-conservación, 2020
In this contribution, the accent is focused on the complexities and possible solutions faced by a restorer during the phase of aesthetical presentation of devotional artworks.
Irene Montagnolo   +4 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

open access: yesISME 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   +14 more
doaj   +1 more source

The complete chloroplast genome of Beesia deltophylla (Ranunculaceae)

open access: yesMitochondrial 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   +3 more
doaj   +1 more source

On the investigation of decorative elements and architecture of the minarets of the Seljuk period in Isfahan [PDF]

open access: yesپیکره, 2020
Problem definition: The minaret is one of the special decorative-functional elements in religious buildings and has an ancient background in pre-Islamic Iranian architecture.
Esmaiel Nasri, Hesam Aslani
doaj   +1 more source

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

open access: yesFrontiers 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   +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

open access: yesHeritage 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   +2 more
doaj   +1 more source

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