Results 71 to 80 of about 3,205,015 (299)

Revised treatment of wet scavenging processes dramatically improves GEOS-Chem 12.0.0 simulations of surface nitric acid, nitrate, and ammonium over the United States [PDF]

open access: yesGeoscientific Model Development, 2019
The widely used community model GEOS-Chem 12.0.0 and previous versions have been recognized to significantly overestimate the concentrations of gaseous nitric acid, aerosol nitrate, and aerosol ammonium over the United States.
G. Luo, F. Yu, J. Schwab
doaj   +1 more source

The Oxidation of Hydrazine by Nitric Acid [PDF]

open access: yes, 2001
Hydrazine nitrate-nitric acid solutions are used in the ion exchange process for separating Pu-238 and Np-237 and have been found to dissolve plutonium metal in a manner advantageous to SRP metal recovery operations.
Karraker, D.G.
core   +1 more source

Atom‐Efficient Cerium‐Based Molecular Cages as Biocompatible Reactive Oxygen Scavengers

open access: yesAdvanced Healthcare Materials, EarlyView.
Discrete mixed‐valent cerium molecular cages organize accessible redox centers within confined coordination environments and scavenge superoxide, hydrogen peroxide, and hydroxyl radicals. Encapsulation of the lead cage in an ROS‐responsive DTP nanoplatform enables lesion‐associated delivery, attenuates macrophage oxidative stress and inflammation, and ...
Chao Li   +9 more
wiley   +1 more source

A reliable method to prepare milligram size environmental samples to quantify metal(loid)s by high-resolution graphite furnace atomic absorption spectrometry

open access: yesMethodsX
We searched for an extraction method that would allow a precise quantification of metal(loid)s in milligram-size samples using high-resolution graphite furnace atomic absorption spectrometry (HR-GFAAS).
Patrícia Gomes Costa   +3 more
doaj   +1 more source

Nasal burn by nitric acid

open access: yesBrazilian Journal of Otorhinolaryngology, 2007
INTRODUCTIONSubstances that can cause chemical burns in skin and mucosas are improper-ly packaged in beverages or medication containers, or even packages of harmless appearances. CASE PRESENTATIONA 33 year old woman dropped in her nose a product based on nitric oxide, known as “strong water” and professionally used by her husband.
Gaspar-Sobrinho, Fernando P.   +2 more
openaire   +2 more sources

Beyond Presumptions: Toward Mechanistic Clarity in Metal‐Free Carbon Catalysts for Electrochemical H2O2 Production via Data Science

open access: yesAdvanced Materials, EarlyView.
Metal‐free carbon catalysts enable the sustainable synthesis of hydrogen peroxide via two‐electron oxygen reduction; however, active site complexity continues to hinder reliable interpretation. This review critiques correlation‐based approaches and highlights the importance of orthogonal experimental designs, standardized catalyst passports ...
Dayu Zhu   +3 more
wiley   +1 more source

Methanesulfonic Acid as a Dual‐Role Reagent for Porous Polymer Network Design

open access: yesAdvanced Materials, EarlyView.
The design of porous polymer networks (PPNs) using methanesulfonic acid (MSA) as a dual‐role reagent facilitates the synthesis of robust PPNs for specific applications. It also makes the scale‐up process techno‐economically feasible because MSA functions simultaneously as both a solvent and a catalyst for the reaction.
Kelechi Festus   +8 more
wiley   +1 more source

Acidic Peptizing Agent Effect on Anatase-Rutile Ratio and Photocatalytic Performance of TiO2 Nanoparticles

open access: yesNanoscale Research Letters, 2018
TiO2 nanoparticles were synthesized from titanium isopropoxide by a simple peptization method using sulfuric, nitric, and acetic acids. The effect of peptizing acid on physicochemical and photocatalytic properties of TiO2 powders was studied.
Hatem A. Mahmoud   +3 more
doaj   +1 more source

Reduced Graphene Oxide Enhances the Vascular Organization and Contractile Performance of Fibrin‐Gelatin‐Based Engineered Cardiac Tissue

open access: yesAdvanced Materials Interfaces, EarlyView.
Fibrin–gelatin hydrogels functionalized with reduced graphene oxide create a mechanically stable and bioactive 3D environment for engineered cardiac tissue. The composite matrix promotes endothelial lumen formation, enhances sarcomeric protein expression, and increases contractile performance of embedded cardiomyocytes.
Christoph Kuckelkorn   +5 more
wiley   +1 more source

Ames Laboratory Report CC-2962

open access: yes, 1945
Report documenting the results of experiments to test the solubility of thorium oxalate in nitric acid solutions and effect of excess oxalic acid. it includes graphed and tabular results: "Tabulation of Results of Oxalate Precipitations.
Ayers, A. S., A.S. Ayers
core   +1 more source

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