Results 31 to 40 of about 2,310,277 (208)

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

The ancient heritage of water ice in the solar system [PDF]

open access: yes, 2014
Identifying the source of Earth's water is central to understanding the origins of life-fostering environments and to assessing the prevalence of such environments in space.
Alexander, Conel M. O'D.   +6 more
core   +2 more sources

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

Interstellar water chemistry: from laboratory to observations

open access: yes, 2013
Water is observed throughout the universe, from diffuse interstellar clouds to protoplanetary disks around young stars, and from comets in our own solar system and exoplanetary atmospheres to galaxies at high redshifts.
Herbst, Eric   +2 more
core   +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

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  

Development of air pollutant deposition, soil water chemistry and soil on Šerlich research plots, and water chemistry in a surface water source

open access: yesJournal of Forest Science, 2004
In 1986 (1987) research plots were established in a forest stands on the south-western slope of Šerlich Mt., Orlické hory Mts. (Kristina Colloredo-Mansfeld - Forest Administration Opočno), at the altitude of 950 to 970 m, to study deposition, chemistry ...
V. Lochman, V. Mareš, V. Fadrhonsová
doaj   +1 more source

A Geothermal Plant from a Time-Scale Perspective

open access: yesEnergies, 2021
In recent years, geothermal energy use from low-temperature sandstone reservoirs has sharply increased. Nonetheless, the injection of heat-depleted geothermal fluids has not been an easy task because of well/formation damage and operational/economic ...
Jacquelin E. Cobos   +2 more
doaj   +1 more source

The assessment of physico-chemical parameters of Shiroro Lake and its major tributaries [PDF]

open access: yes, 1999
The physico-chemical parameters of the surface water of Shiroro Lake and its major tributaries at their entry point to the reservoir were assessed over a period of eighteen months. As in other African inland water bodies there were seasonal variations in
Kolo, R.J.
core  

Hydrogeochemical characteristics and evaluation of groundwater resources of Jilin Province, China

open access: yesFrontiers in Water, 2023
As one of China's nine border provinces, Jilin Province is an important window for China's “Belt and Road” to open up to the north, and an important channel for China's foreign trade and foreign exchanges.
Zhaojun Zeng   +16 more
doaj   +1 more source

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