Results 1 to 10 of about 324,673 (266)

Problems with modified commutators

open access: yesFrontiers in Astronomy and Space Sciences, 2023
The purpose of this paper is to challenge the existing paradigm on which contemporary models of generalised uncertainty relations (GURs) are based, that is, the assumption of modified commutation relations. We review an array of theoretical problems that
Matthew J. Lake   +6 more
doaj   +1 more source

Chemical and Physical Properties of Water in Salman-Farsi Reservoir, Fars Province [PDF]

open access: yesپژوهش‌های آبخیزداری, 2019
It is essential for the proper management of lakes to know physical and chemical factors in their different parts and in different times of the year.
Mehrdad Zamanpoore   +4 more
doaj   +1 more source

TRACES OF SEISMIC ACTIVITY IN THE LAKE BOTTOM SEDIMENTS OF EASTERN FENNOSCANDIA

open access: yesГеодинамика и тектонофизика, 2022
This paper presents the results of a study on traces of ancient earthquakes in the lake bottom sediments of eastern Fennoscandia (Kola region and Karelia).
S. B. Nikolaeva
doaj   +1 more source

Food overlap between Vimba vimba (L., 1758) and Scardinius erythrophthalmus (L., 1758) in Büyükçekmece Reservoir (Turkey)

open access: yesTurkish Journal of Bioscience and Collections, 2020
The feeding habits of two omnivorous fish species, Vimba vimba (L., 1758) and Scardinius erythrophthalmus (L., 1758) from the Büyükçekmece Reservoir (Turkey) were investigated through stomach content analyses.
Gülşah Saç
doaj   +1 more source

Analysis of heavy metals contamination in bottom sediments of lakes located in the Pojezierze Gnieźnieńskie

open access: yesActa Scientiarum Polonorum. Formatio Circumiectus, 2020
Aim of the study: The aim of the study was to assess the degree of heavy metal pollution in bottom sediments of lakes on the basis of geochemical and ecotoxicological indicators.
Mariusz Sojka   +2 more
doaj   +1 more source

Ice and Snow on Lake Stemmevatnet, Spitsbergen, in Winter 2019/20

open access: yesЛëд и снег, 2023
The results of observations and modeling of the formation of the snow-ice cover of Lake Stemme (West Svalbard Island) in winter 2019/20 are presented. The main information was obtained by two radar (GPR) survey, performed on the floating ice of the Lake ...
P. V. Bogorodskiy   +10 more
doaj   +1 more source

Long Term Sediment Modification Effects after Applications of P Inactivation Method in Meromictic Lake (Starodworskie Lake, Olsztyn Lakeland, Poland)

open access: yesLand, 2021
Lake restoration is a part of geoengineering, which is a useful tool for landscape management. The phosphorus inactivation method is one of the most popular lake restoration methods.
Renata Augustyniak   +3 more
doaj   +1 more source

CHANNEL DREDGING EFFECT ON MORPHOMETRIC FEATURES, INDICATORS OF WATER AND BOTTOM SEDIMENTS QUALITY OF THE LAKE MANZHEROKSKOYE (ALTAI REPUBLIC)

open access: yesВодное хозяйство России: проблемы, технологии, управление, 2020
The paper presents the results of a comprehensive assessment of the current ecological state of the important recreational object, i.e. Lake Manzherokskoye (Maiminsky region of the Altai Republic, the Russian Federation).
Dmitry M. Bezmaternykh   +5 more
doaj   +1 more source

Distribution of functional feeding groups of aquatic and semi-aquatic insects on macrophytes in an artificial lentic system in southern Brazil [PDF]

open access: yesActa Limnologica Brasiliensia
: Aim To understand the distribution of functional feeding groups (FFGs) of aquatic and semiaquatic insects associated with macrophytes in a lentic system, we tested whether the abundance of FFGs varied across sampling periods and analyzed the variation
Thaiz Ramos   +2 more
doaj   +1 more source

Diazotroph Genomes and Their Seasonal Dynamics in a Stratified Humic Bog Lake

open access: yesFrontiers in Microbiology, 2020
Aquatic N-fixation is generally associated with the growth and mass development of Cyanobacteria in nitrogen-deprived photic zones. However, sequenced genomes and environmental surveys suggest active aquatic N-fixation also by many non-cyanobacterial ...
Leyden Fernandez   +8 more
doaj   +1 more source

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