Results 81 to 90 of about 92,639 (291)

Magnetite accelerates syntrophic acetate oxidation in methanogenic systems with high ammonia concentrations

open access: yesMicrobial Biotechnology, 2018
Ammonia accumulation is a major inhibitory substance causing anaerobic digestion upset and failure in CH4 production. At high ammonia levels, CH4 production through syntrophic acetate oxidization (SAO) pathways is more tolerant to ammonia toxicity than ...
Zhuang Li   +4 more
semanticscholar   +1 more source

Multi‐Module Micro/Nanorobots for Biomedical and Environmental Remediation Applications

open access: yesAdvanced Intelligent Systems, EarlyView.
Multi‐module microrobots (MNRs) have overcome the limitations of single‐module systems by integrating components such as propeller, actuator, manipulator, and imaging modalities. They show promise in biomedical applications, such as targeted drug delivery and tissue repair, as well as in environmental remediation, including pollutant removal.
Bairong Zhu   +4 more
wiley   +1 more source

Interaction between magnetite and inoculum characteristics in accelerating methane production kinetics

open access: yesGCB Bioenergy
Magnetite nanoparticles can boost methane production via direct interspecies electron transfer. However, the combined effect of inoculum and particle characteristics on magnetite's methanogenesis stimulation is poorly understood.
Ethar M. Al‐Essa   +2 more
doaj   +1 more source

Constraining the magnetic properties of ultrafine- and fine-grained biogenic magnetite

open access: yesEarth, Planets and Space, 2018
Four samples containing ultrafine- and fine-grained magnetite of magnetoferritins and magnetotactic bacteria cells were magnetically characterized at both room and low temperatures.
Tongwei Zhang, Yongxin Pan
doaj   +1 more source

Magnetic analysis of commercial hematite, magnetite, and their mixtures

open access: yes, 2018
Magnetic techniques are suitable to detect iron oxides even in trace concentrations. However, since several iron oxides may be simultaneously present in natural and synthetic samples, mixtures of magnetic particles and magnetic interactions between ...
M. Ahmadzadeh, C. Romero, J. McCloy
semanticscholar   +1 more source

Oxidation of magnetite nanoparticles: impact on surface and crystal properties

open access: yes, 2017
Iron oxide nanoparticles are of great scientific interest due to their huge versatility of applications. The oxidation process of magnetite to maghemite is difficult to monitor as both iron oxide polymorphs possess connatural chemical properties ...
S. Schwaminger   +4 more
semanticscholar   +1 more source

Mapping Ancient Structures and Demonstrating Integrated Archaeological Geophysics at Huacas de Moche, Peru

open access: yesArchaeological Prospection, EarlyView.
ABSTRACT At the Huacas de Moche (HdM), one of the most prominent archaeological sites in Trujillo, Peru, the needs of an expanding modern community are in direct conflict with the desire to preserve the wealth of archaeological information. The undetermined extent of the HdM site introduces disputes in land usage where potential archaeological features
Jared Low   +5 more
wiley   +1 more source

Enhancement of Pb and Cd Adsorption in Water Samples by Magnetite Using Humic Acid as Modifier

open access: yesYankuang ceshi, 2019
BACKGROUND Magnetite is widely used as a green and cheap mineral material to adsorb heavy metals in water samples, but it has the disadvantages of low adsorption capacity, poor selectivity and easy reunion.
SHAO Kun, ZHAO Gai-hong, ZHAO Chao-hui
doaj   +1 more source

Additively Manufactured Binder‐Free Electrodes for Supercapacitors

open access: yesBatteries &Supercaps, EarlyView.
The study presents an innovative manufacturing process for electrodes in supercapacitors. The masked stereolithography method is used to produce electrodes that do not require a binder or metal foil. The printed electrodes have a microporous charter. Electrochemical measurements show that the additively manufactured electrodes behave in the same way as
Johannes Heumann   +6 more
wiley   +1 more source

Crystal -Growth Kinetics of Magnetite (FE3O4) Nanoparticles using the Ostwald Ripening Model

open access: yesInternational Journal of Technology, 2017
Magnetite nanoparticles (Fe3O4) are a type of magnetic particle with huge potential for application as a drug carrier due to their excellent superparamagnetic, biocompatible, and easily modified surface properties.
Ahmad Fadli   +4 more
doaj   +1 more source

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