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AbstractAbstract
[en] The management of radioactive wastes considers many stages. The first one is the segregation of them in the place where they are produced and the last stage is their final disposal. However, the technical options for radioisotopes are different due to the very different characteristics that they have. One of the biggest problems in the case of the disposal of radium-226 is its half-life equivalent to 1600 years. The disposal of this kind of radioisotope produces technical, environmental and economic problems. In general, countries where are being considered radium-226 as radioactive wastes has considered their conditioning in an adequate way and then their respective storage. The final disposal has not been defined. Based on an agreement between Peru and the United States of America it has been possible the repatriation of a number of sources of radium-226 which were stored in the Nuclear Research Center of RACSO. In the present work is described all the technical aspects in relation to the repatriation of this kind of radioactive wastes. (orig.)
Original Title
Repatriacion de fuentes de radio-226
Primary Subject
Source
Prado Cuba, Antonio; Santiago Contreras, Julio; Solis Veliz, Jose; Lopez Moreno, Edith (Instituto Peruano de Energia Nuclear, Lima (Peru)) (eds.), E-mail: aprado@ipen.gob.pe; Instituto Peruano de Energia Nuclear (IPEN), Lima (Peru); 236 p; ISSN 1684-1662;
; Oct 2011; p. 152-154; Also available from the Library of the Peruvian Institute of Nuclear Energy in electronic format (pdf); 3 refs., 1 fig., 2 tabs.

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Osores, Jose; Gonzales, Susana; Martinez, Jorge; Lopez, Edith; Jara, Raul; Anaya, Aurelio
Scientific and Technological Report 20102011
Scientific and Technological Report 20102011
AbstractAbstract
[en] The annual report of the results of the environmental radiation monitoring program developed in 2009 is presented, including also historical data to provide a frame of reference. This document is a continuation of the Environmental Radiation Monitoring Program developed by the Peruvian Institute of Nuclear Energy (IPEN) since 1990 and shows information on environmental radioactivity levels in the country available for public and private organisms as well as for general public. This paper briefly describes the main features of the environmental radiation monitoring programs in the Peruvian territory their results obtained from the surveillance campaign of 2009. It also shows the temporal radiological projection values more representatives in the recent years. (orig.)
Primary Subject
Source
Prado Cuba, Antonio; Santiago Contreras, Julio; Solis Veliz, Jose; Lopez Moreno, Edith (Instituto Peruano de Energia Nuclear, Lima (Peru)) (eds.), E-mail: aprado@ipen.gob.pe; Instituto Peruano de Energia Nuclear (IPEN), Lima (Peru); 236 p; ISSN 1684-1662;
; Oct 2011; p. 159-164; Also available from the Library of the Peruvian Institute of Nuclear Energy in electronic format (pdf); 11 refs., 9 figs., 1 tab.

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Olivera, Paula; Greenwich, Raul; Universidad Nacional Mayor San Marcos, Lima
Scientific and Technological Report 20102011
Scientific and Technological Report 20102011
AbstractAbstract
[en] The analysis of the bony pieces of the skeleton attributed to the conquer Francisco Pizarro was continued, with the quantitative determinations of the elements Calcium (Ca), Iron (Fe), Copper (Cu), Zinc (Zn), Strontium (Sr) and Lead (Pb) evidence graphically the strong contamination by contact with Pb of the pieces of the head and the punctual contamination of some other pieces, with this same element by handling; besides the contamination by Cu in the pieces pertaining to the extremities has been determined. Finally by means of statistical evaluations of the elements Ca, Cu, Zn and Sr the type of diet of the individual in study is determined. (orig.)
Original Title
Analisis bio-arqueometrico de los restos oseos de Francisco Pizarro
Primary Subject
Source
Prado Cuba, Antonio; Santiago Contreras, Julio; Solis Veliz, Jose; Lopez Moreno, Edith (Instituto Peruano de Energia Nuclear, Lima (Peru)) (eds.), E-mail: aprado@ipen.gob.pe; Instituto Peruano de Energia Nuclear (IPEN), Lima (Peru); 236 p; ISSN 1684-1662;
; Oct 2011; p. 3-7; Also available from the Library of the Peruvian Institute of Nuclear Energy in electronic format (pdf); 8 refs., 13 figs.

Record Type
Report
Report Number
Country of publication
ALKALINE EARTH METALS, BODY, CHEMICAL ANALYSIS, DEVELOPING COUNTRIES, ELECTROMAGNETIC RADIATION, ELEMENTS, FERRIMAGNETIC MATERIALS, IONIZING RADIATIONS, IRON COMPOUNDS, LATIN AMERICA, MAGNETIC MATERIALS, MATERIALS, MEASURING INSTRUMENTS, METALS, NONDESTRUCTIVE ANALYSIS, ORGANS, OXYGEN COMPOUNDS, RADIATIONS, SOUTH AMERICA, SPECTROMETERS, TRANSITION ELEMENT COMPOUNDS, TRANSITION ELEMENTS, X-RAY EMISSION ANALYSIS
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AbstractAbstract
[en] In this work the preparation of nanoparticles of magnetite by methods of precipitation in inverse microemulsions and the conventional method 'Chemical Co-precipitation' is reported. Magnetite nanoparticles were characterized by X-ray diffraction, Moessbauer spectroscopy and vibrating sample magnetometer (VSM). The results showed that the nanoparticles obtained by the method of precipitation in inverse microemulsion showed a superparamagnetic behavior and had a particle average diameter of 9 nm, while by the conventional method 'Chemical Co-precipitation' were 17 nm. In addition, other benefits observed in the application of the method of precipitation in inverse microemulsion with regard to the conventional method is that it allowed obtaining spheroidal magnetite nanoparticles, monodisperse and with magnetic and chemical properties which might have better results in medical applications. (author)
Original Title
Sintesis y caracterizacion de nanoparticulas superparamagneticas obtenidas por precipitacion en microemulsion inversa para aplicaciones biomedicas
Primary Subject
Source
8 refs., 3 figs., 4 tabs.
Record Type
Journal Article
Journal
Revista de la Sociedad Quimica del Peru; ISSN 1810-634X;
; v. 79(2); p. 99-106

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AbstractAbstract
[en] A module for the automatic extraction of volume from 0.05 mL to 1 mL has been developed using a 3D printer, using as base material acrylonitrile butadiene styrene (ABS). The design allows automation of the input and ejection eluate "9"9"m Tc in the generator prototype "9"9Mo/"9"9"mTc processes; use in other systems is feasible due to its high degree of versatility, depending on the selection of the main components: precision syringe and multi-way solenoid valve. An accuracy equivalent to commercial equipment has been obtained, but at lower cost. This article describes the mechanical design, design calculations of the movement mechanism, electronics and automatic syringe dispenser control. (authors).
Original Title
Diseno e implementacion de un modulo para el control automatico de volumenes en un equipo generador de "9"9"mTc
Primary Subject
Source
Available on-line: http://dspace.ipen.gob.pe/bitstream/ipen/610/1/ICT%20Vol%2014%20p%20137-143.pdf; 8 refs., 4 tabs, 11 figs.
Record Type
Journal Article
Journal
Informe Cientifico Tecnologico (Online); ISSN 2225-2029;
; v. 14; p. 137-143

Country of publication
BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, EQUIPMENT, HOURS LIVING RADIOISOTOPES, INTERMEDIATE MASS NUCLEI, INTERNAL CONVERSION RADIOISOTOPES, ISOMERIC TRANSITION ISOTOPES, ISOTOPES, NUCLEI, ODD-EVEN NUCLEI, RADIOISOTOPES, SEPARATION EQUIPMENT, TECHNETIUM ISOTOPES, YEARS LIVING RADIOISOTOPES
Reference NumberReference Number
INIS VolumeINIS Volume
INIS IssueINIS Issue
Osores, Jose, E-mail: josores@ipen.gob.pe2014
AbstractAbstract
[en] The aim of this study was to determine background levels of natural and artificial radionuclides in Peruvian hakes, collected in the Pacific coast of Peru, as a mechanism to establish a biomonitoring model for human radiation exposure resulting from the ingestion of this species. The concentration range overall dry weight of beta activity was between 39 and 79 Bq/kg; for K-40, the range was between 66 and 116 Bq/kg and for Cs-137, the range was between 0.0 and 0.4 Bq/kg. No detectable levels of Co-60, Cs-134 and Ra-226 were found. The dose derived from K-40 was negligible. Data show that Peruvian hakes do not represent a public health risk because of their intake as food. (author).
Original Title
Niveles de radiactividad en merluza peruana Merluccius gayi peruanus (Guitchenot)
Primary Subject
Secondary Subject
Source
Available on-line: http://dspace.ipen.gob.pe/bitstream/ipen/596/1/ICT%20Vol%2014%20p%2039-41.pdf; 9 refs., 3 figs.
Record Type
Journal Article
Journal
Informe Cientifico Tecnologico (Online); ISSN 2225-2029;
; v. 14; p. 39-41

Country of publication
ALKALINE EARTH ISOTOPES, ALPHA DECAY RADIOISOTOPES, ANIMALS, AQUATIC ORGANISMS, BETA DECAY RADIOISOTOPES, BETA-MINUS DECAY RADIOISOTOPES, BETA-PLUS DECAY RADIOISOTOPES, CARBON 14 DECAY RADIOISOTOPES, CESIUM ISOTOPES, CHARGED PARTICLE DETECTION, CHEMICAL ANALYSIS, DETECTION, ELECTRON CAPTURE RADIOISOTOPES, EVEN-EVEN NUCLEI, HEAVY ION DECAY RADIOISOTOPES, HEAVY NUCLEI, INTERMEDIATE MASS NUCLEI, ISOMERIC TRANSITION ISOTOPES, ISOTOPES, LIGHT NUCLEI, MONITORING, NANOSECONDS LIVING RADIOISOTOPES, NUCLEI, ODD-EVEN NUCLEI, ODD-ODD NUCLEI, POTASSIUM ISOTOPES, QUANTITATIVE CHEMICAL ANALYSIS, RADIATION DETECTION, RADIOACTIVITY, RADIOISOTOPES, RADIUM ISOTOPES, VERTEBRATES, YEARS LIVING RADIOISOTOPES
Reference NumberReference Number
INIS VolumeINIS Volume
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External URLExternal URL
Morote, Mario; Zegarra, Lourdes; Bernal, Carla, E-mail: mmorote@ipen.gob.pe2014
AbstractAbstract
[en] Six microbial strains called 'Culti-loops' (A. brasiliensis, B. subtilis, C. albicans, P. aeruginosa, S. aureus and E. coli) were used to verify the efficiency of the culture media, however, USP indicates to use less than 100 cfu / strain; to achieve it increasing dilutions were performed for each strain and according to the obtained results that grew from 1 x 10"4 to 30 x 10"6 cfu / strain and by means of calculation, volumes were determined (µL), seeded in culture medium for each of the listed microorganisms. Practical values were determined and according to the results, a dilution value of less than 100 cfu was obtained for each strain. (authors).
Original Title
Verificacion de la carga microbiana en los 'Culti-Loops'
Primary Subject
Secondary Subject
Source
Available on-line: http://dspace.ipen.gob.pe/bitstream/ipen/615/1/ICT%20Vol%2014%20p%20173-177.pdf; 1 refs., 1 tab, 12 figs.
Record Type
Journal Article
Journal
Informe Cientifico Tecnologico (Online); ISSN 2225-2029;
; v. 14; p. 173-177

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Martinez, Vanessa C.; Lopez, Alcides; Gomez, Monica M., E-mail: mgomez@uni.edu.pe2016
AbstractAbstract
[en] Some dye-sensitized solar cells were prepared using TiO2 modified with CuO (TiO2-CuO) like a working electrode. P25 commercial powder and small amounts of CuO powder were used in preparing the modified coating. The coating was deposited following doctor Blade method, on a conductive substrate SnO2:F, which was previously deposited on a TiO2 blocking layer by spray pyrolysis technique. For sensitization of the coating, a ruthenium complex, cis-bis (isothiocyanate) bis (2,2'bipiridil-4,4'dicarboxilato) ruthenium (II) ammonium bistetrabutil, also known as N719, was used. The CuO powder was structurally characterized by X-ray diffraction and its morphology was studied by scanning electron microscopy. The functional groups of TiO2 and CuO were studied by infrared spectroscopy. The oxidation and reduction cycles of Cu were shown by cyclic voltammetry. Through incident photon to current conversion efficiency measures, and solar efficiency measures, it was found that the modified films TiO2-CuO with 0,33 % CuO displayed values of 57 and 2 %, respectively, which were higher than those prepared from TiO2, which were 52 % and 1,7 %, respectively.
Original Title
Celdas solares sensibilizadas por colorante basadas en TiO2 modificado con CuO
Primary Subject
Source
15 refs., 3 tabs, 16 figs.
Record Type
Journal Article
Journal
Revista de la Sociedad Quimica del Peru; ISSN 1810-634X;
; v. 82(3); p. 324-338

Country of publication
CHALCOGENIDES, CHEMICAL REACTIONS, COHERENT SCATTERING, DECOMPOSITION, DIFFRACTION, DIRECT ENERGY CONVERTERS, ELECTRON MICROSCOPY, EQUIPMENT, MICROSCOPY, OXIDES, OXYGEN COMPOUNDS, PHOTOELECTRIC CELLS, PHOTOVOLTAIC CELLS, SCATTERING, SOLAR EQUIPMENT, SPECTRA, THERMOCHEMICAL PROCESSES, TITANIUM COMPOUNDS, TRANSITION ELEMENT COMPOUNDS
Reference NumberReference Number
INIS VolumeINIS Volume
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AbstractAbstract
[en] The objective of the present study has been to extract and isolate the alkaloids from leaves of Croton baillonianus, corresponding to the methanolic extract by exclusion chromatography with Sephadex LH-20 followed by a purification by high performance liquid chromatography, obtaining six alkaloids. Two low polarity alkaloid and two glycoside alkaloids were analyzed by Electronic System impact mass spectrometry; these alkaloids belong to bencylisoquinolinic type; the study has connection to the determination of its antioxidant, antiulcerose and cytotoxic properties. (author).
Original Title
Estudio quimico analitico de la fraccion alcaloidica del extracto metanolico de las hojas de Croton baillonianus (AUBL)
Primary Subject
Source
7 refs., 5 figs.
Record Type
Journal Article
Journal
Revista de la Sociedad Quimica del Peru; ISSN 1810-634X;
; v. 78(3); p. 170-182

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Gonzalez, J.C.; Flores, J.W.; Bustamante, A.; De Los Santos, V., E-mail: jcgonzalez@utec.edu.pe2015
AbstractAbstract
[en] In copper oxide superconductor materials the internal charge transference between the superconducting planes of CuO2 and the charge reservoir blocks, it is a key factor that controls the superconducting critical temperature. The superconducting planes of CuO2 are not planes in a strict sense, the position of the Cu(2) atom and the O(2) and O(3) oxygen atoms are not lying in a same plane, the change of its positions are closely related to atomic replacements in the superconducting planes of CuO2 or in the charge reservoir blocks. Therefore, we correlates the substitutions effects in the canonical unit cell of YBa2Cu3O7 with regard to length and angle bond variation of copper and oxygen atoms with the superconducting critical temperature obtained by Rietveld refinement of X-ray diffraction patterns in polycrystalline powder samples, such as: SmBa2Cu3O7, [Y0,90,Pr0,10]Ba2Cu3O7, [Ca,La]Ba2Cu3O7 and YBa2Cu3O7. (author)
Original Title
Correlacion de la deformacion de los planos superconductores de CuO2 con la temperatura critica superconductor
Source
20 refs., 4 tabs, 7 figs.
Record Type
Journal Article
Journal
Revista de la Sociedad Quimica del Peru; ISSN 1810-634X;
; v. 81(4); p. 350-359

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