Results 51 to 60 of about 1,538,323 (350)

Determination of heavy metal background concentration in bottom sediment and risk assessment of sediment pollution by heavy metals in the Hrazdan River (Armenia)

Applied Water Science, 2019
The purpose of this study is to determine background concentrations of heavy metals in bottom sediments, as well as to characterize potential danger of heavy metals in bottom sediments of the Hrazdan River.
Vahagn Petrosyan, Gevorg Pirumyan, Yekaterina Perikhanyan   +2 more
doaj   +1 more source

Waterborne GPR survey for estimating bottom-sediment variability: A survey on the Po River, Turin, Italy [PDF]

, 2009
We conducted an integrated geophysical survey on a stretch of the river Po in order to check the GPR ability to discriminate the variability of riverbed sediments through an analysis of the bottom reflection amplitudes.
Corrado Calzoni, Kovacs A., Luigi Sambuelli, Manuele Pesenti, Moorman B. J., Tóth T.   +5 more
core   +1 more source

Bottom sediments of the central and eastern parts of the Barents Sea: Ecotoxicological studies

Vestnik MGTU, 2020
Bioassay is used to study bottom sediment ecotoxicity in the central and eastern parts of the Barents Sea. The effect of sediment elutriates on the growth of microalgae Phaedactylum tricornutum Bohlin and survival of brine shrimp Artemia salina L. larvae
Gorbacheva E. A.
doaj   +1 more source

OXYGEN CONSUMPTION BY BOTTOM SEDIMENT

Doboku Gakkai Ronbunshu, 1992
流速の変動する感潮部において堆積した底泥による酸素消費を, 定量的かつ一般的に評価する方法について検討した. 浮遊させた底泥による酸素消費特性について検討した後, その結果を用いて, 河床に堆積した底泥による酸素消費を, 浮遊時の酸素消費特性, 堆積状態, 底泥上の流水の特性により評価する方法を, 実験とモデルにより考察した.
Yoshihiko HOSOI, Hitoshi MURAKAMI, Yasunori KOZUKI   +2 more
openaire   +2 more sources

Day Plots of Bacterial Magnetite from Sediments of Shira Lake (Khakassia, Russia) [PDF]

, 2018
The domain state of magnetite detected in sediments of Shira lake (Khakassia, Russia) was examined by means of magnetic hysteresis. Analysis of experimental data obtained on samples from different parts of bottom sediment cores in terms of Day plots ...
Balaev, Dmitry A., Rogozin, Denis Yu., Semenov, Sergey V., Shaykhutdinov, Kirill A.   +3 more
core   +1 more source

An assessment of the concentrations of PCDDs/Fs in contaminated bottom sediments and their sources and ecological risk

Journal of Soils and Sediments, 2019
Purpose The purpose of the study was to determine the levels of polychlorinated dibenzo- p -dioxin and polychlorinated dibenzofuran (PCDD/F), two types of persistent organic pollutant (POP), in an urban retention reservoir located in an industrial zone ...
A. Baran, M. Mierzwa-Hersztek, M. Urbaniak, K. Gondek, M. Tarnawski, Magdalena Szara, M. Zieliński   +6 more
semanticscholar   +1 more source

Trace Element Composition of Stream Sediments an Integrating Factor for Water Quality [PDF]

, 1975
Bottom sediments, suspended sediments, and water were sampled along 130 miles of the Buffalo River in northern Arkansas. The water and acid extracts of the suspended sediments and the minus 95 mesh fraction of the bottom sediments were analyzed by atomic
Bowen, William S., MacDonald, Harold C., Steele, Kenneth F., Wagner, George H.   +3 more
core   +2 more sources

Influence of hydrodynamic processes on the fate of sedimentary organic matter on continental margins [PDF]

, 2018
Understanding the effects of hydrodynamic forcing on organic matter (OM) composition is important for assessment of organic carbon (OC) burial in marginal seas on regional and global scales.
Aller, Aller, Arnarson, Bao, Bao, Bauer, Bianchi, Bianchi, Bianchi, Blair, Blair, Blair, Bröder, Burdige, Burdige, Cameron McIntyre, Canuel, Cartapanis, Cathalot, Chen, Coppola, Cui, Daniel B. Montluçon, Drenzek, Eglinton, Galy, Gao, Goñi, Griffith, Guo, Harris, Hedges, Hilton, Hilton, Hwang, Inthorn, Kao, Keil, Keil, Kusch, Kusch, Leithold, Li, Lie, Liu, Liu, Liu, Liu, Luo, Marwick, Mayer, McCave, McCave, McCave, Meixun Zhao, Milliman, Mollenhauer, Mollenhauer, Mollenhauer, Mollenhauer, Mollenhauer, Mollenhauer, Muller-Karger, Nuwer, Ohkouchi, Pawlowicz, Pedrosa-Pàmies, Qiao, Rui Bao, Saito, Shah, Stuiver, Su, Tao, Tao, Tesi, Tesi, Tesi, Tesi, Tessa S. van der Voort, Thomsen, Thomsen, Timothy I. Eglinton, Voort, Wagner, Wakeham, Wang, Wang, Wang, Wang, Wang, Wang, Wu, Xinyu Guo, Xu, Yang, Yang, Yang, Yang, Yao, Yao, Zhu, Zonneveld   +102 more
core   +1 more source

Substrate specificity of Burkholderia pseudomallei multidrug transporters is influenced by the hydrophilic patch in the substrate‐binding pocket

FEBS Letters, EarlyView.
Multidrug transporters BpeB and BpeF from the Gram‐negative pathogen Burkholderia pseudomallei have a hydrophilic patch in their substrate‐binding pocket. Drug susceptibility tests and growth curve analyses using an Escherichia coli recombinant expression system revealed that the hydrophilic patches of BpeB and BpeF are involved in the substrate ...
Ui Okada, Satoshi Murakami
wiley   +1 more source

STUDY OF HEAVY METAL CONTENT IN BOTTOM SEDIMENTS AND WATER IN THE DIVERSION CHANNEL OF RICE IRRIGATION SYSTEM

Мелиорация и гидротехника
Purpose: to conduct hydrochemical studies of water and bottom sediments, as well as to assess their hazard level in the diversion channel of the rice irrigation system.
Tatyana I. Drovovozova, Lyubov A. Bulgakova, Mikhail V. Vlasov, Natalia N. Krasovskaya   +3 more
doaj   +1 more source