Search Results - (Author, Cooperation:V. Peris)
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1Latest Papers from Table of Contents or Articles in PressB. Sicardy ; J. L. Ortiz ; M. Assafin ; E. Jehin ; A. Maury ; E. Lellouch ; R. G. Hutton ; F. Braga-Ribas ; F. Colas ; D. Hestroffer ; J. Lecacheux ; F. Roques ; P. Santos-Sanz ; T. Widemann ; N. Morales ; R. Duffard ; A. Thirouin ; A. J. Castro-Tirado ; M. Jelinek ; P. Kubanek ; A. Sota ; R. Sanchez-Ramirez ; A. H. Andrei ; J. I. Camargo ; D. N. da Silva Neto ; A. R. Gomes, Jr. ; R. V. Martins ; M. Gillon ; J. Manfroid ; G. P. Tozzi ; C. Harlingten ; S. Saravia ; R. Behrend ; S. Mottola ; E. G. Melendo ; V. Peris ; J. Fabregat ; J. M. Madiedo ; L. Cuesta ; M. T. Eibe ; A. Ullan ; F. Organero ; S. Pastor ; J. A. de Los Reyes ; S. Pedraz ; A. Castro ; I. de la Cueva ; G. Muler ; I. A. Steele ; M. Cebrian ; P. Montanes-Rodriguez ; A. Oscoz ; D. Weaver ; C. Jacques ; W. J. Corradi ; F. P. Santos ; W. Reis ; A. Milone ; M. Emilio ; L. Gutierrez ; R. Vazquez ; H. Hernandez-Toledo
Nature Publishing Group (NPG)
Published 2011Staff ViewPublication Date: 2011-10-28Publisher: Nature Publishing Group (NPG)Print ISSN: 0028-0836Electronic ISSN: 1476-4687Topics: BiologyChemistry and PharmacologyMedicineNatural Sciences in GeneralPhysicsPublished by: -
2Articles: DFG German National LicensesReig, F. Bosch ; Martinez, V. Peris ; Mossi, F. Bosch ; Adelantado, J. V. Gimeno
Springer
Published 1992Staff ViewISSN: 1618-2650Source: Springer Online Journal Archives 1860-2000Topics: Chemistry and PharmacologyNotes: Summary An algorithm for quantifying interelemental effects in X-ray fluorescence techniques is developed. By applying an addition process, the ratio between the mass absorption coefficients of the analyte and the unknown sample (μ i * /μ s * ) is calculated to correct the fluorescence intensity of the element to be determined and linearize the I-c calibration plot. This coefficient can be calculated graphically and numerically. The method is applied to the determination of tin in lead alloys with good results over wide concentration ranges.Type of Medium: Electronic ResourceURL: -
3Articles: DFG German National LicensesMartinez, V. Peris ; Reig, F. Bosch ; Adelantado, J. V. Gimeno ; Carbó, M. T. Doménech
Springer
Published 1992Staff ViewISSN: 1618-2650Source: Springer Online Journal Archives 1860-2000Topics: Chemistry and PharmacologyNotes: Summary In this paper a method is proposed for the multielemental analysis of Sb(III), Ba, Cd, Cr(III), Hg, Pb and As(III) in plastics, using X-ray fluorescence after alkaline decomposition and preconcentration by (co)precipitation. The organic matrix is destroyed by decomposition with sodium hydroxide melted in a silver crucible by the open system technique, using sodium nitrate as auxiliary oxidant. The variables which influence preconcentration are optimized: digestion time, pH, salinity, carrier and sodium diethyldithiocarbamate (DDTC) and sodium rhodizonate (R) as precipitants. The calibration curves were linear up to 200 μg of the element present, except for lead (150 μg) antimony(III) (100 μg) and barium (1000 μg). The proposed method has been applied to several different industrial plastics. The procedure is quick and leads to results comparable with those obtained when using a recommended decomposition for each element separately.Type of Medium: Electronic ResourceURL: -
4Articles: DFG German National LicensesStaff View
ISSN: 1618-2650Source: Springer Online Journal Archives 1860-2000Topics: Chemistry and PharmacologyDescription / Table of Contents: Summary A rapid, accurate and precise method for the determination of zirconium in silicates is proposed. Insoluble or sparingly soluble samples are decomposed by means of molten sodium hydroxide. Chloranilic acid is employed as reagent for the spectrophotometric determination of Zr(IV). The limit of detection is 1.2×10−7 M and the relative standard deviation is 0.24%.Notes: Zusammenfassung Eine schnelle, genaue und präzise Methode für die Analyse von Zirkonium in Silicaten wird vorgestellt. Der Aufschluß von Zirkoniumsilicat mit geschmolzenem Alkalihydroxid ist für schwerlösliche Proben besonders geeignet. Die spektralphotometrische Bestimmung von Zirkonium mit Chloranilsäure (2,5-Dichlor-3,6-dihydroxy-1,4-benzochinon) zeigt, daß diese Methode sehr empfindlich und selektiv ist (Nachweisgrenze 1,2 · 10−7 M, Standardabweichung 0,24%).Type of Medium: Electronic ResourceURL: -
5Articles: DFG German National LicensesCarbó, M. T. Doménech ; Reig, F. Bosch ; Adelantado, J. V. Gimeno ; Martinez, V. Peris
New York, NY [u.a.] : Wiley-Blackwell
Published 1994Staff ViewISSN: 0049-8246Keywords: Chemistry ; Analytical Chemistry and SpectroscopySource: Wiley InterScience Backfile Collection 1832-2000Topics: PhysicsNotes: A method for correcting the intensity of x-ray fluorescence (limit dilution method) is proposed for the analysis of samples with a complex matrix such as ceramic materials of archaeological interest. This method corrects the interelement effects, resolving the wide deviations which occur in the quantitative results obtained by x-ray fluorescence without correction. The contents of sodium, magnesium, aluminium, silicon, potassium, calcium, titanium and iron in sixteen archaeological ceramic samples of different origins and from different locations were determined. The results obtained are comparable to the values obtained by chemical analysis. A statistical study of the data was carried out to classify the samples hierarchically by cluster analysis of their chemical composition and loss on ignition.Additional Material: 3 Ill.Type of Medium: Electronic ResourceURL: -
6Articles: DFG German National LicensesPERIS, V. TORRES ; CUEVAS, E. JORDA ; QUILIS, L. RAMON
Oxford, UK : Blackwell Publishing Ltd
Published 1992Staff ViewISSN: 1365-4632Source: Blackwell Publishing Journal Backfiles 1879-2005Topics: MedicineNotes: Ten years ago, a 17-year-old high school student noticed a small growth in the prepuce near the free edge; this elevation (Fig. 1) began to grow progressively until it was 0.5 cm long and 0.3 cm wide (Fig. 2). The base of this tumor was not pediculated, it was lighter in color than the skin around it, and its consistency was half soft.The upper part of the tumor was covered completely by the skin of the penis. The patient stated that he had never felt pain and that the tumor had not changed in size. He felt a slight sensation of tension in this area only when he had not urinated for many hours and his bladder was full. He also had this sensation in the normal penis.A careful examination showed that the testes, scrotum, and penis were normal, without hypospadias. On rectal examination, the prostate and seminal vesical were found to be normal. Neither the anus nor the rectum showed any change.Secretory urographic studies showed two normal kidneys that were somewhat descended and rotated. Neither the lumbosacral region of the spinal column nor the pubis was abnormal. The diphallus was extirpated while the patient was under local anesthesia, and we noticed that there was no connection between the tumor (diphallus) and the normal urethra. Histologic Examination: The surgical extirpation was divided into several 5-mm portions. On macroscopic examination, it had a cystic appearance, with creamy contents.The first portions revealed the presence of a pavement and horny (keratinous) epithelium (Fig 3), with a dilated duct beneath It; this duct was covered by transitional mucus, similar to that covering the normal urethra (Fig. 4).In the last pieces cut, at low and high magnifications, a urethral cavity was seen that was covered by a pavement epithelium; under this epithelium, numerous groups of erectile fibers were found (Fig. 5).Type of Medium: Electronic ResourceURL: -
7Articles: DFG German National LicensesStaff View
ISSN: 1572-9451Source: Springer Online Journal Archives 1860-2000Topics: Electrical Engineering, Measurement and Control TechnologyNotes: Abstract This paper reports new results concerning the capabilities of a family of service disciplines aimed at providing per-connection end-to-end delay (and throughput) guarantees in high-speed networks. This family consists of the class of rate-controlled service disciplines, in which traffic from a connection is reshaped to conform to specific traffic characteristics, at every hop on its path. When used together with a scheduling policy at each node, this reshaping enables the network to provide end-to-end delay guarantees to individual connections. The main advantages of this family of service disciplines are their implementation simplicity and flexibility. On the other hand, because the delay guarantees provided are based on summing worst case delays at each node, it has also been argued that the resulting bounds are very conservative which may more than offset the benefits. In particular, other service disciplines such as those based on Fair Queueing or Generalized Processor Sharing (GPS), have been shown to provide much tighter delay bounds. As a result, these disciplines, although more complex from an implementation point-of-view, have been considered for the purpose of providing end-to-end guarantees in high-speed networks. In this paper, we show that through “proper” selection of the reshaping to which we subject the traffic of a connection, the penalty incurred by computing end-to-end delay bounds based on worst cases at each node can be alleviated. Specifically, we show how rate-controlled service disciplines can be designed to outperform the Rate Proportional Processor Sharing (RPPS) service discipline. Based on these findings, we believe that rate-controlled service disciplines provide a very powerful and practical solution to the problem of providing end-to-end guarantees in high-speed networks.Type of Medium: Electronic ResourceURL: