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Showing 25 to 36 of 811 entries
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Porcine pericardial membrane subjected to tensile testing: preliminary study of the process of selecting tissue for use in the construction of cardiac bioprostheses.

Journal of materials science. Materials in medicine

Garcia Páez JM, Jorge-Herrero E, Carrera A, Millán I, Rocha A, Salvador J, Mendez J, Téllez G, Castillo-Olivares JL.
PMID: 15348282
J Mater Sci Mater Med. 2001 May;12(5):425-30. doi: 10.1023/a:1011201104225.

The durability of cardiac bioprostheses is limited fundamentally by structural failure due to mechanical fatigue and calcification. In the present report, we analyze, using an in vitro hydraulic simulator to test tensile strength, the mechanical behavior of porcine pericardium...

Mechanical effects of increases in the load applied in uniaxial and biaxial tensile testing: Part I. Calf pericardium.

Journal of materials science. Materials in medicine

García Páez JM, Jorge E, Rocha A, Maestro M, Castillo-Olivares JL, Millan I, Carrera A, Cordon A, Tellez G, Burgos R.
PMID: 15348613
J Mater Sci Mater Med. 2002 Apr;13(4):381-8. doi: 10.1023/a:1014388618649.

The authors analyzed the mechanical behavior of the calf pericardium employed in the construction of valve leaflets for cardiac bioprostheses. Forty samples of pericardium were subjected to uniaxial tensile testing, 20 as controls and 20 exposed to loads increasing...

Continuous in situ measurements of volcanic gases with a diode-laser-based spectrometer: CO2 and H2O concentration and soil degassing at Vulcano (Aeolian islands: Italy).

Geochemical transactions

De Rosa M, Gagliardi G, Rocco A, Somma R, De Natale P, De Natale G.
PMID: 17448243
Geochem Trans. 2007 Apr 20;8:5. doi: 10.1186/1467-4866-8-5.

We report on a continuous-measurement campaign carried out in Vulcano (Aeolian islands, Sicily), devoted to the simultaneous monitoring of CO2 and H2O concentrations. The measurements were performed with an absorption spectrometer based on a semiconductor laser source emitting around...

Isotopic effect in extended x-ray-absorption fine structure of germanium.

Physical review letters

Purans J, Afify ND, Dalba G, Grisenti R, De Panfilis S, Kuzmin A, Ozhogin VI, Rocca F, Sanson A, Tiutiunnikov SI, Fornasini P.
PMID: 18352392
Phys Rev Lett. 2008 Feb 08;100(5):055901. doi: 10.1103/PhysRevLett.100.055901. Epub 2008 Feb 08.

Extended x-ray absorption fine structure has been measured on two powdered samples of (70)Ge and (76)Ge as a function of temperature from 20 to 300 K. The effect of isotopic mass difference on the amplitude of relative atomic vibrations...

Should patients with osteoarthritis be treated with COX2 inhibitors rather than traditional NSAIDs?.

Nature clinical practice. Rheumatology

Rocca B, Davì G.
PMID: 17406384
Nat Clin Pract Rheumatol. 2007 Jun;3(6):316-7. doi: 10.1038/ncprheum0480. Epub 2007 Apr 03.

No abstract available.

[Comparative studies on endemic areas of bancroftian filariasis in Greater Recife, Brazil].

Cadernos de saude publica

Maciel MA, Marzochi KB, Silva EC, Rocha A, Furtado AF.
PMID: 15042220
Cad Saude Publica. 1994;10:301-9. Epub 2004 Mar 19.

Two districts in Recife (Santo Amaro and Campo Grande) and two districts in Olinda (Sapucaia and Salgadinho), were selected for a comparative study of bancroftian filariasis in Greater Recife. Selection parameters included similar socio-economic, demographic, and endemic levels of...

Ethylene decomposition at undercoordinated sites on Cu(410).

Journal of the American Chemical Society

Kravchuk T, Vattuone L, Burkholder L, Tysoe WT, Rocca M.
PMID: 18729365
J Am Chem Soc. 2008 Sep 24;130(38):12552-3. doi: 10.1021/ja802105z. Epub 2008 Aug 26.

We demonstrate the selective, low-temperature chemistry of ethylene on the strongly undercoordinated sites of Cu(410) by investigating its adsorption by high-resolution electron energy loss spectroscopy (HREELS), X-ray photoelectron spectroscopy (XPS), and temperature-programmed desorption (TPD). After dosing ethylene at approximately...

High repetition rate operation of saturated tabletop soft x-ray lasers in transitions of neon-like ions near 30 nm.

Optics express

Alessi D, Luther B, Wang Y, Larotonda M, Berrill M, Rocca J.
PMID: 19495095
Opt Express. 2005 Mar 21;13(6):2093-8. doi: 10.1364/opex.13.002093.

We report average powers exceeding 1 microwatt in laser transitions of Ne-like ions at wavelengths near 30 nm. Gain-saturated operation was obtained at a repetition rate of 5 Hz exciting solid targets with pump pulses of ~1 J energy...

Tuning the stoichiometry of surface oxide phases by step morphology: Ag(511) versus Ag(210).

Physical review letters

Savio L, Giallombardo C, Vattuone L, Kokalj A, Rocca M.
PMID: 19113778
Phys Rev Lett. 2008 Dec 31;101(26):266103. doi: 10.1103/PhysRevLett.101.266103.

We show by vibrational and photoemission spectroscopy and by ab initio calculations that in ultrahigh vacuum oxygen adsorption at stepped Ag surfaces causes the formation of surface oxide phases with different stoichiometry, depending on the morphology of the steps...

High-resolution electron energy loss spectroscopy study of O-Cu(410).

The journal of physical chemistry. B

Vattuone L, Savio L, Gerbi A, Okada M, Moritani K, Rocca M.
PMID: 17263572
J Phys Chem B. 2007 Feb 22;111(7):1679-83. doi: 10.1021/jp0667083. Epub 2007 Jan 31.

We have investigated oxygen adsorption on Cu(410) by high-resolution electron energy loss spectroscopy, dosing O2 with a supersonic molecular beam at different surface temperatures and for different angles of incidence and beam energies or by backfilling. In the investigated...

The combination of Ezetimibe and Statin: a new treatment for hypercholesterolemia.

Heart international

Nodari S, Rocca P, Saporetti A, Bettari L, Foresti AL, Tanghetti E, Metra M, Dei Cas L.
PMID: 21977270
Heart Int. 2007;3(1):12. doi: 10.4081/hi.2007.12. Epub 2007 Jun 15.

The combination of Simvastatin and Ezetimibe allows dual inhibition of both cholesterol production and absorption. This treatment approach allows achieving same low serum cholesterol levels with the administration of much lower doses of statins. This should reduce side effects,...

Comparison of 2 treatment concepts for implant-supported bar-retained overdentures demonstrates equivalence regarding efficacy and safety.

The journal of evidence-based dental practice

Rocha A.
PMID: 17138319
J Evid Based Dent Pract. 2005 Mar;5(1):19-21. doi: 10.1016/j.jebdp.2005.01.010.

No abstract available.

Showing 25 to 36 of 811 entries