Results 31 to 40 of about 89,086 (264)

Inorganic Amino-Nitro-Guanidinium Derivatives

open access: yesCrystals, 2012
1-Amino-3-nitroguanidine (ANQ, 1) was synthesized by hydrazinolysis of nitroguanidine (NQ) with hydrazine hydrate. Four different amino-nitroguanidinium salts (chloride (2), bromide (3), iodide (4) and sulfate (5)) were synthesized and structurally ...
Jörg Stierstorfer   +4 more
doaj   +1 more source

Time-resolved Raman spectroscopy for in situ planetary mineralogy [PDF]

open access: yes, 2010
Planetary mineralogy can be revealed through a variety of remote sensing and in situ investigations that precede any plans for eventual sample return. We briefly review those techniques and focus on the capabilities for on-surface in situ examination of ...
Blacksberg, Jordana   +2 more
core   +2 more sources

THE AMUR RIVER WATER DURING THE WINTER LOW WATER PERIOD: THE MANY-YEAR DYNAMICS OF THE SULFATES CONTENT AND RUNOFF

open access: yesВодное хозяйство России: проблемы, технологии, управление, 2020
Sulfates are the dominant ions among the major ones in the Amur region’s sewage. Therefore, the purpose of the research is to study the long-term dynamics of the content and runoff of sulfates in the Amur River in the winter low-water, based on the ...
Vladimir P. Shesterkin   +1 more
doaj   +1 more source

Characterization of the Exopolysaccharide Produced by Salipiger mucosus A3T, a Halophilic Species Belonging to the Alphaproteobacteria, Isolated on the Spanish Mediterranean Seaboard

open access: yesMarine Drugs, 2010
We have studied the exopolysaccharide produced by the type strain of Salipiger mucosus, a species of halophilic, EPS-producing (exopolysaccharide-producing) bacterium belonging to the Alphaproteobacteria.
Victoria Béjar   +6 more
doaj   +1 more source

Development of Variants of High-Performance Self-Compacting Concrete with Improved Resistance to the Attack of Sulfates

open access: yesApplied Sciences, 2021
This paper presents experimental and analytical work of which the main objective was to support the introduction of a new technology for the production of sewer pipes. In this technology, the pipes produced consist of two differently produced parts.
Ivailo Terzijski   +5 more
doaj   +1 more source

Five-S-isotope evidence of two distinct mass-independent sulfur isotope effects and implications for the modern and Archean atmospheres. [PDF]

open access: yes, 2018
The signature of mass-independent fractionation of quadruple sulfur stable isotopes (S-MIF) in Archean rocks, ice cores, and Martian meteorites provides a unique probe of the oxygen and sulfur cycles in the terrestrial and Martian paleoatmospheres.
Li, Menghan   +9 more
core  

Efficacy and Safety Analysis of Roxarestat in Regulating Renal Anemia in Patients on Maintenance Hemodialysis

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Objective To compare the efficacy and safety of roxarestat versus recombinant human erythropoietin (rhEPO) in the management of renal anemia in patients undergoing maintenance hemodialysis. Methods This was a prospective, open‐label, randomized controlled trial.
Lingling Chen, Junjie Zhu, Qiaonan Ge
wiley   +1 more source

DTA and TGA study of MeSo4 (Me = Fe, Co, Ni) dissociation in the presence of coke [PDF]

open access: yesJournal of Mining and Metallurgy. Section B: Metallurgy, 2002
MeSO4 (Me = Fe, Co, Ni) dissociation is investigated in order to estimate the effect of temperature, time and presence of coke as reducer on the degree and mechanism of dissociation.
Boyanov B.S.
doaj   +1 more source

Control of cell division in the adult brain by heparan sulfates in fractones and vascular basement membranes [PDF]

open access: yes, 2010
Regulation of cell division in adult tissues and organs requires the coordination of growth factors at the surface of potentially-dividing cells in specific anatomic loci named germinal niches.
Frederic Mercier, Vanessa Douet
core   +1 more source

A Scanning Transmission X-ray Microscopy Study of Cubic and Orthorhombic C₃A and Their Hydration Products in the Presence of Gypsum. [PDF]

open access: yes, 2016
This paper shows the microstructural differences and phase characterization of pure phases and hydrated products of the cubic and orthorhombic (Na-doped) polymorphs of tricalcium aluminate (C₃A), which are commonly found in traditional Portland cements ...
Chae, Sejung Rosie   +5 more
core   +3 more sources

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