Results 61 to 70 of about 1,803,074 (391)

Impact of dissolved oxygen and loading rate on NH3 oxidation and N2 production mechanisms in activated sludge treatment of sewage

open access: yesMicrobial Biotechnology, 2021
Summary Microaerobic activated sludge (MAS) is a one‐stage process operated at 0.5–1.0 mg l−1 dissolved oxygen (DO) aiming at simultaneous nitrification and denitrification.
Xueyu Zhang   +3 more
doaj   +1 more source

Bioavailability of pesticides in freshwater sediments [PDF]

open access: yes, 2007
In ecological risk assessment standardized sediment toxicity tests are used to predict the hazard of chemicals for sediment-living organisms. Feeding is a prerequisite in these long-term tests to avoid starvation of test organisms.
Åkerblom, Nina
core  

Desirable Host Plant Qualities in Wild Rice \u3ci\u3e(Zizania Palustris)\u3c/i\u3e for Infestation by the Rice Worm \u3ci\u3eApamea Apamiformis\u3c/i\u3e (Lepidoptera: Noctuidae) [PDF]

open access: yes, 2018
The rate at which an insect infests hosts by ovipositioning and/or subsequent growth of larvae often depends on specific desirable host plant qualities.
Dahlberg, Nathan B, Pastor, John
core   +2 more sources

Peptide‐based ligand antagonists block a Vibrio cholerae adhesin

open access: yesFEBS Letters, EarlyView.
The structure of a peptide‐binding domain of the Vibrio cholerae adhesin FrhA was solved by X‐ray crystallography, revealing how the inhibitory peptide AGYTD binds tightly at its Ca2+‐coordinated pocket. Structure‐guided design incorporating D‐amino acids enhanced binding affinity, providing a foundation for developing anti‐adhesion therapeutics ...
Mingyu Wang   +9 more
wiley   +1 more source

Bioturbation experiments in the Venice Lagoon [PDF]

open access: yes, 2003
Short experiments (14–21 days) were carried out during autumn 1998 and spring 1999 at one selected site of the Venice Lagoon to measure bioturbation activities and mixing rates, as well as to obtain quantitative information on benthos functionality ...
Bellucci, Luca Giorgio   +4 more
core   +6 more sources

The role of histone modifications in transcription regulation upon DNA damage

open access: yesFEBS Letters, EarlyView.
This review discusses the critical role of histone modifications in regulating gene expression during the DNA damage response (DDR). By modulating chromatin structure and recruiting repair factors, these post‐translational modifications fine‐tune transcriptional programmes to maintain genomic stability.
Angelina Job Kolady, Siyao Wang
wiley   +1 more source

Impact of urbanization on rainfall-runoff processes: case study in the Liangshui River Basin in Beijing, China [PDF]

open access: yesProceedings of the International Association of Hydrological Sciences, 2016
China is undergoing rapid urbanization during the past decades. For example, the proportion of urban population in Beijing has increased from 57.6 % in 1980 to 86.3 % in 2013.
Z. Xu, Z. Xu, G. Zhao, G. Zhao
doaj   +1 more source

Application and evaluation of sediment fingerprinting techniques in the Manawatu River catchment, New Zealand : a thesis presented in partial fulfilment of the requirements for the degree of Doctor of Philosophy in Geography at Massey University, Palmerston North, New Zealand [PDF]

open access: yes, 2016
Suspended sediment is an important component of the fluvial environment, contributing not only to the physical form, but also the chemical and ecological character of river channels and adjacent floodplains.
Vale, Simon
core  

A new methodology for the quantitative visualization of coherent flow structures in alluvial channels using multibeam echo-sounding (MBES) [PDF]

open access: yes, 2010
In order to investigate the interactions between turbulence and suspended sediment transport in natural aqueous environments, we ideally require a technique that allows simultaneous measurement of fluid velocity and sediment concentration for the whole ...
Best, J L   +7 more
core   +2 more sources

Loess Plateau storage of Northeastern Tibetan Plateau-derived Yellow River sediment

open access: yesNature Communications, 2015
Marine accumulations of terrigenous sediment are widely assumed to accurately record climatic- and tectonic-controlled mountain denudation and play an important role in understanding late Cenozoic mountain uplift and global cooling.
J. Nie   +19 more
semanticscholar   +1 more source

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