Lo tangible y lo visible en los dibujos que realizan las personas ciegas.

Resumen tomado de la publicación. El artículo recoge el texto de la comunicación del autor presentada en las Jornadas organizadas por la ONCE en abril de 2003

La educación norteamericana en el mensaje especial del Presidente de los EEUU.

Se recoge el discurso del presidente de los Estados Unidos, John Fitzgerald Kennedy, pronunciado en el Congreso norteamericano el 20 de febrero de 1961, sobre la estructura del sistema educativo en ese país. En el discurso Kennedy defiende que el progreso como nación no puede ser más rápido que el que se alcance en la educación. Los puntos esenciales que trata son: la asistencia a las escuelas públicas, elementales y medias; la construcción de servicios en colegios y universidades; la ayuda a los estudiantes y la orientación profesional.

On the reprocessing and reanalysis of observations for climate

The long observational record is critical to our understanding of the Earth’s climate, but most observing systems were not developed with a climate objective in mind. As a result, tremendous efforts have gone into assessing and reprocessing the data records to improve their usefulness in climate studies. The purpose of this paper is to both review recent progress in reprocessing and reanalyzing observations, and summarize the challenges that must be overcome in order to improve our understanding of climate and variability. Reprocessing improves data quality through more scrutiny and improved retrieval techniques for individual observing systems, while reanalysis merges many disparate observations with models through data assimilation, yet both aim to provide a climatology of Earth processes. Many challenges remain, such as tracking the improvement of processing algorithms and limited spatial coverage. Reanalyses have fostered significant research, yet reliable global trends in many physical fields are not yet attainable, despite significant advances in data assimilation and numerical modeling. Oceanic reanalyses have made significant advances in recent years, but will only be discussed here in terms of progress toward integrated Earth system analyses. Climate data sets are generally adequate for process studies and large-scale climate variability. Communication of the strengths, limitations and uncertainties of reprocessed observations and reanalysis data, not only among the community of developers, but also with the extended research community, including the new generations of researchers and the decision makers is crucial for further advancement of the observational data records. It must be emphasized that careful investigation of the data and processing methods are required to use the observations appropriately.

Estimating the economic value of Mount Buffalo National Park with the travel cost and contingent valuation models

The Mount Buffalo National Park is the oldest national park in Victoria, Australia. There has been a rapid increase in the number of visitors to the park during the last decade and park management has been a concern, especially in the light of declining budgetary allocations and potential damage due to the increased visitor numbers. Policy options to increase park revenue remain unclear because of a lack of information on demand parameters and user costs. This study estimates the economic value of the park using the travel cost method (TCM) and the contingent valuation method (CVM). The TCM gives higher consumer surplus (CS) than the CVM. The CS shows that the economic value of the park is high and that there are opportunities to introduce innovative fee schemes to enhance its revenue. Present entry fee systems do not capture the economic value of the park.

Covalent immobilization of naringinase for the transformation of a flavonoid

Naringinase (EC 3.2.1.40) from Penicillium sp was immobilized by covalent binding to woodchips to improve its catalytic activity. The immobilization of naringinase on glutaraldehyde-coated woodchips (600 mg woodchips, 10 U naringinase, 45 °C, pH 4.0 and 12h) through 1% glutaraldehyde cross-linking was optimized. The pH-activity curve of the immobilized enzyme shifted toward a lower pH compared with that of the soluble enzyme. The immobilization caused a marked increase in thermal stability of the enzyme. The immobilized naringinase was stable during storage at 4 °C. No loss of activity was observed when the immobilized enzyme was used for seven consecutive cycles of operations. The efficiency of immobilization was 120%, while soluble naringinase afforded 82% efficacy for the hydrolysis of standard naringin under optimal conditions. Its applicability for debittering kinnow mandarin juice afforded 76% debittering efficiency. 

Los normandos en Paris [Texto impreso] : tragedia lírica en tres actos

Representada en el Teatro de Valencia en el mes de Setiembre de 1841

Valedictory poem delivered in the Chapel of Harvard University on the 21 June 1796: in the presence of the President Proffers & Tutors & the four classes of understudents at the request of the class who completed their college studies on that day

Handwritten draft of the Charles P. Sumner’s valedictory poem to the Harvard class of 1796, in a 19th century hardcover binding beginning “The youth by adverse fortune forced to roam…”. The poem mentions John Russell, a member of the Class of 1796 who died in November 1795. The copy includes edits and struck-out words.

The Congressional globe.

Edited by Blair and Rives, 23d-30th Congress; by John C. Rives, 31st-38th Congr., 1st sess.; by F. & J. Rives, 38th Cong., 2d sess.-39th Cong.; by F. & J. Rives & George A. Bailey, 40th-42d Cong.

An etymological dictionary of the English language /

Spine title: Oswald's etymological dictionary.

Message from the president of the United States relative to civil rights.

"February 28, 1963.--Referred to the Committee on the Judiciary and ordered to be printed."

The practice of the Court of Quarter Sessions, and its civil, administrative and appellate jurisdiction; to which is added a short treatise on its criminal jurisdiction, with tables of statutes under which appeals lie and of all indictable offences triable at Quarter Sessions; and appendices.

Criminal appeal rules and forms, 1908: p. 655-706.

The seven last words : an oratorio /

Mode of access: Internet.