Results 21 to 30 of about 4,265,820 (293)

Nitrogen removal in marine environments: recent findings and future research challenges [PDF]

, 2005
Respiratory reduction of nitrate (denitrification) is recognized as the most important process converting biologically available (fixed) nitrogen to N2. In current N cycle models, a major proportion of global marine denitrification (50–70%) is assumed to
Bo Thamdrup, Thamdrup, Bo, Donald E. Canfield, Gilbert, Franck, Dalsgaard, T, Thamdrup, B, Canfield, Donald E., Engström, Pia,, Dalsgaard, Tage, Kristina Sundbäck, Robert C. Aller, Hulth, Stefan, Sundb\ue4ck, Kristina, Engström, Pia, Tage Dalsgaard, Aller, R. C, Canfield, D. E, Franck Gilbert, Engstr\uf6m, Pia, Aller, Robert Curwood, Sundbäck, Kristina, Gilbert, F., Hulth, Stefan,, Stefan Hulth, Pia Engström, Sundbäck, Kristina,   +25 more
core   +1 more source

Deoxygenation of Graphene Oxide: Reduction or Cleaning? [PDF]

Chemistry of Materials, 2013
We show that the two-component model of graphene oxide (GO), that is, composed of highly oxidized carbonaceous debris complexed to oxygen functionalized graphene sheets, is a generic feature of the synthesis of GO, independent of oxidant or protocol used. The debris present, roughly one-third by mass, can be removed by a base wash.
Thomas, H.R., Day, S.P., Woodruff, W.E., Vallés, C., Young, R.J., Kinloch, I.A., Morley, G.W., Hanna, J.V., Wilson, N.R., Rourke, J.P.   +9 more
openaire   +2 more sources

Cyclic Voltammetry Study for MnO2 Nanoparticles Modified Carbon Paste Electrode

Nano Biomedicine and Engineering, 2019
An electrical method was prepared for the measurement of Mn with trace amount in drugs and for the assessment of a sensitive method in comparison with spectrometric and atomic analyzer by a new carbon paste electrode modified with MnO2 nanoparticles. The
Emad Salaam Abood, Mothana Salih Mashkoor, Amer Mousa Jouda   +2 more
doaj   +1 more source

Variation of iron redox kinetics and its relation with molecular composition of standard humic substances at circumneutral pH. [PDF]

PLoS ONE, 2017
Oxidation and reduction kinetics of iron (Fe) and proportion of steady-state Fe(II) concentration relative to total dissolved Fe (steady-state Fe(II) fraction) were investigated in the presence of various types of standard humic substances (HS) with ...
Ying Ping Lee, Manabu Fujii, Tetsuro Kikuchi, Koumei Terao, Chihiro Yoshimura   +4 more
doaj   +1 more source

Determination of Diclofenac on a Dysprosium Nanowire- Modified Carbon Paste Electrode Accomplished in a Flow Injection System by Advanced Filtering

Sensors, 2009
A new detection technique called Fast Fourier Transform Square-Wave Voltammetry (FFT SWV) is based on measurements of electrode admittance as a function of potential. The response of the detector (microelectrode), which is generated by a redox processes,
Ali Akbar Moosavi-Movahedi, Rasoul Dinarvand, Parandis Daneshgar, Parviz Norouzi, Mohammad Reza Ganjali   +4 more
doaj   +1 more source

Response of soil pH and electrical conductivity to climate, soil type, and water source, and their effect on rice grain yield in Sri Lankan lowlands

Circular Agricultural Systems
Soil pH and electrical conductivity (EC) are crucial determinants of rice productivity, as they influence nutrient solubility and osmotic regulation.
Sinthuja Sugathas, Charuka Chandrasekara, Anuththara Neththasinghe, Nipuna Thennakoon, Mojith Ariyarathna, Harsha Kadupitiya, Rohana Thilakasiri, Lalith Suriyagoda   +7 more
doaj   +1 more source

Changes in Sperm Glutathione and Glutathione Redox States Correlate to Poor Sperm Qualitative Measures

Reproductive Medicine
Background/Objectives: In the past 50 years, human reproductive capacity has steadily declined with elusive and idiopathic origins. Amongst theorized causes, oxidative stress has been proposed to directly contribute to male infertility.
Caroline G. Ploeger, Kate Hansen, Ammon Bayles, Adriana Burger, Jason Hansen, Timothy Jenkins   +5 more
doaj   +1 more source

Thiol Signalling Network with an Eye to Diabetes

Molecules, 2010
Redox regulatory system controls normal cellular functions. Controlled changes in redox couples potential serve as components for signal transduction, similarly to the phosphorylation cascade.
Elena Matteucci, Ottavio Giampietro
doaj   +1 more source

Biotechnological aspects of sulfate reduction with methane as electron donor [PDF]

, 2010
Biological sulfate reduction can be used for the removal and recovery of oxidized sulfur compounds and metals from waste streams. However, the costs of conventional electron donors, like hydrogen and ethanol, limit the application possibilities.
Meulepas, Roel J.W., Piet N. L. Lens, Alfons J. M. Stams, Stams, Alfons J.M., Roel J. W. Meulepas, Stams, A.J.M., Meulepas, R.J.W., Lens, P.N.L., Lens, Piet N.L.   +8 more
core   +1 more source

Effects of royal jelly consumption on inflammation and oxidative stress: A systematic review and meta-analysis of randomized controlled trials [PDF]

Avicenna Journal of Phytomedicine
Objective: This systematic review and meta-analysis examines the impact of royal jelly (RJ) on inflammation and oxidative stress. By synthesizing existing research, it aims to provide valuable insights into the potential health benefits of RJ.Materials ...
Shaghayegh Taheri, Hossein Bahari, Farshad Mirzavi, Pegah Rahbarinejad, Zohreh Sajadi Hezaveh, Armin Doostparast, Asghar Zarban, Elyas Nattagh-Eshtivani   +7 more
doaj   +1 more source