Results 1 to 10 of about 359,912 (167)

Animating the critical zone: beavers as critical zone engineers

open access: yesFrontiers in Water
Beavers (Castor canadensis) have not been adequately included in critical zone research, yet they can affect multiple critical zone processes across the terrestrial-aquatic interface of river corridors.
Clifford Adamchak   +4 more
doaj   +2 more sources

Entropy in the Critical Zone: A Comprehensive Review [PDF]

open access: yesEntropy, 2014
Thermodynamic entropy was initially proposed by Clausius in 1865. Since then it has been implemented in the analysis of different systems, and is seen as a promising concept to understand the evolution of open systems in non-equilibrium conditions.
Henry Lin, Lin Henry
exaly   +4 more sources

What Do P-Wave Velocities Tell Us About the Critical Zone?

open access: yesFrontiers in Water, 2022
Fractures in Earth's critical zone influence groundwater flow and storage and promote chemical weathering. Fractured materials are difficult to characterize on large spatial scales because they contain fractures that span a range of sizes, have complex ...
Brady A. Flinchum   +2 more
doaj   +3 more sources

Screening and early diagnosis of chronic obstructive pulmonary disease: a population study

open access: yesBMC Pulmonary Medicine, 2023
Background and objective Although chronic obstructive pulmonary disease (COPD) is a common disease leading to further morbidity and significant mortality, there is still limited data on screening for COPD.
Wenhui Tang   +5 more
doaj   +1 more source

500-year growth cycle of stalagmite and its response to regional hydrological changes in Heshang cave, western Hubei

open access: yes地质科技通报, 2022
Stalagmitesare important high-resolution paleoclimate archives, and possess abundant physical, chemical and microbial paleoclimate proxies. Among of them, the growth rate (GR)of stalagmites quite popular because its easy access and non-destruction ...
Cuizhen Zhang   +3 more
doaj   +1 more source

The Susceptibility of Wetland Areas in the Yangtze River Basin to Temperature and Vegetation Changes

open access: yesRemote Sensing, 2023
Wetlands serve a critical function in water storage and ecological diversity maintenance. However, human activities have resulted in wetland loss in the middle and lower reaches of the Yangtze River Basin (MLYRB), while the wetland distribution in this ...
Zhenru Ma   +3 more
doaj   +1 more source

A model-based assessment of the potential use of compound-specific stable isotope analysis in river monitoring of diffuse pesticide pollution [PDF]

open access: yesHydrology and Earth System Sciences, 2013
Compound-specific stable isotope analysis (CSIA) has, in combination with model-assisted interpretation, proven to be a valuable approach to quantify the extent of organic contaminant degradation in groundwater systems.
S. R. Lutz   +4 more
doaj   +1 more source

Geochemical cycle of mercury associated with wet deposition and inflows in a subalpine wetland

open access: yesEcotoxicology and Environmental Safety, 2021
Subalpine wetland is a mercury (Hg) sensitive ecosystem, but there is poor understanding of Hg behavior in this typical wetland. Here, distribution and speciation of Hg in waters of a subalpine wetland (Dajiuhu) in China were investigated, and an initial
Yongqiang Ning   +7 more
doaj   +1 more source

Discovery of the Lower Cretaceous aeolian sandstones in the Wulong Formation in Yichang, Hubei Province, and its provenance

open access: yes地质科技通报, 2023
Objective Eolian sandstones were widely developed in the middle latitudes of China during the Cretaceous era, which indicated the existence of subtropical desert belts.
Qian Wang   +4 more
doaj   +1 more source

Sex-specific prevalence and outcomes of frailty in critically ill patients

open access: yesJournal of Intensive Care, 2020
Background The prevalence of frailty, an important risk factor for short- and long-term outcomes in hospitalized adults, differs by sex. Studies in critically ill adults have also found differences in mortality and organ support rates in males and ...
Erin Hessey   +6 more
doaj   +1 more source

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