Results 21 to 30 of about 7,914,150 (283)

Semiarid Lakes of Southwestern Siberia as Sentinels of On-Going Climate Change: Hydrochemistry, the Carbon Cycle, and Modern Carbonate Mineral Formation

open access: yesAtmosphere, 2023
Towards a better understanding of factors controlling carbon (C) exchange between inland waters and atmosphere, we addressed the inorganic carbon cycle in semiarid lakes of Central Eurasia, subjected to the strong impact of on-going climate change.
Andrey Novoselov   +7 more
doaj   +1 more source

Hydrogeochemical characteristics and environmental significance of travertine landscape in Muji area

open access: yesShuiwen dizhi gongcheng dizhi
Travertine is a type of karst deposit widely distributed worldwide. Groundwater in karst areas is the main component of global water resources, providing a large number of ecological services and urban water supply.
Rui AN   +5 more
doaj   +1 more source

The impact of the Tri-City Ring Road on surface water of small endorheic wetlands

open access: yesLimnological Review, 2017
The paper presents the results of the impact of the Tri-City Ring Road on small endorheic catchment basins. Particular attention was paid to pollution discharged from the road to the surface water, as well as changes in hydrological conditions in the ...
Staszek Wojciech   +3 more
doaj   +1 more source

Effects of Soil, Light, and Temperature on Freshwater Tannin Concentrations

open access: yesHydrobiology
Tannins are plant secondary compounds that leach into soil and water. Tannin concentrations can be higher in lentic freshwater than in other aquatic ecosystems, which can result in toxicity to freshwater organisms.
Julia E. Earl   +3 more
doaj   +1 more source

The trophic evolution of Lake Iseo as related to its holomixis

open access: yesJournal of Limnology, 1999
Lake Iseo is undergoing a progressive deterioration in water quality, mainly due to eutrophication. This paper, based on measurements performed on the main tributaries and the outflow, considers the phosphorus, nitrogen and silica budget of the lake ...
Rosario MOSELLO   +4 more
doaj   +1 more source

Chemistry and source of the dissolved inorganic carbon of sediments porewater in Huixian karst wetland

open access: yesShuiwen dizhi gongcheng dizhi
The ecological environment of karst wetland is highly fragile, and both natural processes and human activities have led to the gradual deterioration of wetland water quality. However, the influence on the evolution of carbon remains unclear.
Jing LI   +4 more
doaj   +1 more source

Structural insights into an engineered feruloyl esterase with improved MHET degrading properties

open access: yesFEBS Letters, EarlyView.
A feruloyl esterase was engineered to mimic key features of MHETase, enhancing the degradation of PET oligomers. Structural and computational analysis reveal how a point mutation stabilizes the active site and reshapes the binding cleft, expading substrate scope.
Panagiota Karampa   +5 more
wiley   +1 more source

Fens of the Sierra Nevada, California, USA: patterns of distribution and vegetation [PDF]

open access: yesMires and Peat, 2015
A broad sample of 79 montane fens in the Sierra Nevada revealed that underlying geology and topography exert strong control over the distribution and vegetation of these ecosystems.
E.C. Wolf , D.J. Cooper
doaj  

An isoform of 14‐3‐3 protein regulates transbilayer lipid movement at the plasma membrane

open access: yesFEBS Letters, EarlyView.
Loss of 14‐3‐3ζ in CHO cells confers resistance to exogenous phosphatidylserine (PS) and impairs endocytosis‐independent inward flip‐flop of fluorescent PS at the plasma membrane. RNAi‐mediated knockdown reproduces this defect, while no additive effect is seen in ATP11C‐deficient cells.
Akiko Yamaji‐Hasegawa   +3 more
wiley   +1 more source

Water Treatment Without Chemistry

open access: yesCHIMIA, 2003
Thin-film boron-doped diamond coatings (BDD/Si) on boron-doped silicon substrates by means of a large-scale hot-filament chemical vapor deposition (HF CVD) process have been developed in order to be used as an innovative and efficient electrode ...
Philippe Rychen   +2 more
doaj   +1 more source

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