Buscar
Mostrando ítems 191-200 de 254
Photopatternable di-ureasil-zirconium oxocluster organic-inorganic hybrids as cost effective integrated optical substrates
(Amer Chemical Soc, 2008-06-10)
Organic-inorganic hybrids containing methacrylic acid (McOH, CH(2)= C(CH(3))COOH)) modified zirconium tetrapropoxide, Zr(OPr(n))(4), classed as di-ureasil-zirconium oxo-cluster hybrids, have been prepared and structurally ...
Sufentanil-2-hydroxypropyl-beta-cyclodextrin inclusion complex for pain treatment: Physicochemical, cytotoxicity, and pharmacological evaluation
(Wiley-Blackwell, 2012-10-01)
Sufentanil (SUF) is a synthetic analgesic opioid widely used for the management of acute and chronic pain. This drug was complexed with 2-hydroxypropyl-beta-cyclodextrin (HP-beta-CD) and the physicochemical characterization, ...
Corrosion protection of stainless steel by polysiloxane hybrid coatings prepared using the sol-gel process
(Elsevier B.V. Sa, 2010-05-15)
Polysiloxane hybrid films were deposited on 316 L stainless steel substrates by dip-coating in a sol prepared by acid-catalyzed hydrolytic co-polycondensation of tetraethoxysilane (TEOS) and 3-methacryloxy propyltrimethoxysilane ...
Structure and properties of Brazilian peat: Analysis by spectroscopy and microscopy
(2007-09-06)
Peat was taken from the Sergipe State, Brazil and characterized by several techniques: elemental and thermal analyses; Fourier infrared (FTIR) and solid state 13C nuclear magnetic resonance (NMR) spectroscopies; scanning ...
Chitosan and corn stover derivative bioadsorbent: characterization and application in hexavalent chromium adsorption processes
(2020-05-25)
Several studies related to effluents treatment containing heavy metals have been developed, especially those that enable the application of lignocellulosic residues and natural polymers as well as chitosan to obtain ...
Development and pharmacological evaluation of ropivacaine-2-hydroxypropyl-beta-cyclodextrin inclusion complex
(Elsevier B.V., 2008-01-01)
Ropivacaine (RVC) is an enantiomerically pure local anesthetic (LA) largely used in surgical procedures, which presents physico-chemical and therapeutic properties similar to those of bupivacaine (BPV), but associated to ...
Micromorphology and spectroscopic characteristics of organic matter in waterlogged podzols of the upper Amazon basin
(Elsevier B.V., 2008-06-15)
In waterlogged environments of the upper Amazon basin, organic matter is a major driver in the podzolisation of clay-depleted laterites, especially through its ability to weather clay minerals and chelate metals. Its ...
A successful strategy for the recovering of active P21, an insoluble recombinant protein of Trypanosoma cruzi
(Nature Publishing Group, 2014-03-04)
Structural studies of proteins normally require large quantities of pure material that can only be obtained through heterologous expression systems and recombinant technique. in these procedures, large amounts of expressed ...
Quantification of paramagnetic ions in solution using time domain NMR. PROS and CONS to optical emission spectrometry method
(Elsevier Science Bv, 2018)
Solutions containing paramagnetic ions (PMIs) have been widely used in several industrial and agricultural applications. Although the concentrations of these ions in solutions are very important, they are rarely checked ...
Absolute Configuration Reassignment of Natural Products: An Overview of the Last Decade
(SBQ, 2021)
The assignment of absolute configuration (AC) is a crucial step in the structural characterization of natural products, especially for those subjected to biological assays. Methods such as X-ray crystallography, stereocontrolled ...