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Showing 1 to 12 of 201 entries
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Expression of integrin genes and proteins in progression and dissemination of colorectal adenocarcinoma.

BMC clinical pathology

Denadai MV, Viana LS, Affonso RJ, Silva SR, Oliveira ID, Toledo SR, Matos D.
PMID: 23705994
BMC Clin Pathol. 2013 May 24;13:16. doi: 10.1186/1472-6890-13-16. eCollection 2013.

BACKGROUND: This study aimed to evaluate the relationship between the expression levels of selected integrin genes and proteins and cell differentiation, TNM stage, histological type and other variables potentially associated with the progression and dissemination of colorectal carcinoma (CRC).METHODS:...

Data analysis of "krokodil" samples obtained by street-like synthesis.

Data in brief

Neves JF, Alves EA, Soares JX, Cravo SM, Silva AM, Pereira Netto AD, Carvalho F, Dinis-Oliveira RJ, Afonso CM.
PMID: 26958624
Data Brief. 2015 Nov 28;6:83-8. doi: 10.1016/j.dib.2015.11.046. eCollection 2016 Mar.

The data described in this work is related to be the subject of an article in the Forensic Science International, titled: "The harmful chemistry behind "krokodil": street-like synthesis and product analysis" (http://dx.doi.org/10.1016/j.forsciint.2015.07.042) [1]. The data presented here provides additional...

From Porous to Dense Nanostructured β-Ti alloys through High-Pressure Torsion.

Scientific reports

Afonso CRM, Amigó A, Stolyarov V, Gunderov D, Amigó V.
PMID: 29051519
Sci Rep. 2017 Oct 19;7(1):13618. doi: 10.1038/s41598-017-13074-z.

β-Ti alloys have low elastic modulus, good specific strength and high corrosion resistance for biomaterial applications. Noble elements, such as Nb, Ta and Mo, are used to obtain β-Ti due to their chemical biocompatibility. However, due to their refractory...

Ultrafast laser-induced phase transitions in amorphous GeSb films.

Physical review letters

Callan JP, Kim AM, Roeser CA, Mazur E, Solis J, Siegel J, Afonso CN, de Sande JC.
PMID: 11328045
Phys Rev Lett. 2001 Apr 16;86(16):3650-3. doi: 10.1103/PhysRevLett.86.3650.

Time-resolved measurements of the spectral dielectric function reveal new information about ultrafast phase transitions induced by femtosecond laser pulses in Sb-rich amorphous GeSb films. The excitation generates a nonthermal phase within 200 fs. The dielectric function of this phase...

Assessment of matrix-dependent analyte stability and volatility during open-vessel sample dissolution for arsenic, cadmium, mercury and selenium.

Mikrochimica acta

Afonso DD, Arslan Z, Bednar AJ.
PMID: 20383291
Mikrochim Acta. 2009 Nov 01;167(1):53-59. doi: 10.1007/s00604-009-0218-3.

The effects of calcium and magnesium (as nitrates) and phosphorous (as hydrogen phosphate) were investigated on the stability of As, Cd, Hg, and Se during open-vessel dissolution in Teflon vessels. Samples of mainly inorganic and biological matrices were dissolved...

Sculpting nanometer-sized light landscape with plasmonic nanocolumns.

The Journal of chemical physics

Marty R, Arbouet A, Girard C, Margueritat J, Gonzalo J, Afonso CN.
PMID: 20001076
J Chem Phys. 2009 Dec 14;131(22):224707. doi: 10.1063/1.3271794.

Plasmonic structures are commonly used to both confine and enhance surface electromagnetic fields. In the past ten years, their peculiar optical properties have given rise to many promising applications ranging from high density data storage to surface optical trapping....

Synthesis of cyclopentitols by ring-closing approaches.

Chemical reviews

Kurteva VB, Afonso CA.
PMID: 19772301
Chem Rev. 2009 Dec;109(12):6809-57. doi: 10.1021/cr900169j.

No abstract available.

Photodegradation of bisphenol A in aqueous medium: monitoring and identification of by-products by liquid chromatography coupled to high-resolution mass spectrometry.

Rapid communications in mass spectrometry : RCM

da Silva JC, Reis Teodoro JA, Afonso RJ, Aquino SF, Augusti R.
PMID: 24677519
Rapid Commun Mass Spectrom. 2014 May 15;28(9):987-94. doi: 10.1002/rcm.6863.

RATIONALE: Environmental bisphenol A (BPA) contamination is currently a matter of concern. This compound can disrupt the endocrine system by mimicking natural hormones and cause adverse effects on different organisms. In addition, it has been suggested that BPA can...

2D plasmonic and diffractive structures with sharp features by UV laser patterning.

Nanotechnology

Peláez RJ, Afonso CN, Bulíř J, Novotný M, Lančok J, Piksová K.
PMID: 23403869
Nanotechnology. 2013 Mar 08;24(9):095301. doi: 10.1088/0957-4484/24/9/095301. Epub 2013 Feb 12.

The aim of this work is to produce 2D plasmonic and diffractive structures in Ag films with sharp features for which both a deeper understanding of laser induced transformation upon modulated laser intensity and a correlation between structural and...

Expanding the plasmonic response of bimetallic nanoparticles by laser seeding.

Nanotechnology

Peláez RJ, Rodríguez CE, Afonso CN.
PMID: 26866902
Nanotechnology. 2016 Mar 11;27(10):105301. doi: 10.1088/0957-4484/27/10/105301. Epub 2016 Feb 11.

This work explores a cost-effective route to enhance the tuning range of the optical response of metal nanostructures on substrates beyond the ranges that are achievable through the nanostructure dimensions, composition or dewetting processes. The new route (laser seeding)...

Laser fabrication of porous silicon-based platforms for cell culturing.

Journal of biomedical materials research. Part B, Applied biomaterials

Peláez RJ, Afonso CN, Vega F, Recio-Sánchez G, Torres-Costa V, Manso-Silván M, García-Ruiz JP, Martín-Palma RJ.
PMID: 23744635
J Biomed Mater Res B Appl Biomater. 2013 Jun 07; doi: 10.1002/jbmb.32966. Epub 2013 Jun 07.

In this study, we explore the selective culturing of human mesenchymal stem cells (hMSCs) on Si-based diffractive platforms. We demonstrate a single-step and flexible method for producing platforms on nanostructured porous silicon (nanoPS) based on the use of single...

Organocatalyzed One-Step Synthesis of Functionalized N-Alkyl-Pyridinium Salts from Biomass Derived 5-Hydroxymethylfurfural.

Organic letters

Sowmiah S, Veiros LF, Esperança JM, Rebelo LP, Afonso CA.
PMID: 26493742
Org Lett. 2015 Nov 06;17(21):5244-7. doi: 10.1021/acs.orglett.5b02573. Epub 2015 Oct 23.

An efficient and scalable method has been developed for the synthesis of N-alkylpyridinium salts from biomass derived 5-hydroxymethylfurfural and alkyl amines using a catalytic amount of formic acid. This protocol is also extended to various diamines providing the exclusive...

Showing 1 to 12 of 201 entries